Bosch GreenTronic 7000T Installation Manual
Installation and operating instructions for GreenTronic 7000T Hybrid Electric Water Heater..
Instruction Manual for BOSCH models including: TR7000T-50US, TR7000T-80US, TR7000T-50CA, TR7000T-80CA, TR7000T-50US Hybrid Electric Water Heater, TR7000T-50US, Hybrid Electric Water Heater, Electric Water Heater, Water Heater, Heater
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Document DEVICE REPORTbosch greentronic 7000t iom en 06.2024 2Installation and Operating Instructions Hybrid Electric Water Heater GreenTronic 7000 T TR7000T-50US | TR7000T-80US | TR7000T-50CA | TR7000T-80CA WARNING: The information in these instructions must be followed exactly. Improper installation, adjustment, service or maintenance will void warranty and can cause property damage, personal injury or death. WARNING: Installation and service must be performed by a qualified installer or service agency. WARNING: READ ALL INSTRUCTIONS BEFORE USING THIS WATER HEATER. Install or locate this water heater only in accordance with the installation instructions. Use this water heater only for its intended use as described in this manual. BTC 755003301 C / 06.2024 Installation and Operating Instructions 2 | Bosch GreenTronic 7000 T Hybrid Electric Water Heater - BTC 755003301 C (06.2024) Table of Contents 1 Key to Symbols and Safety Instructions 1.1 Key to Symbols 2 Specifications 3 Dimensions 4 Getting Started 4.1 Location 4.2 Air Flow Requirements 4.3 Electrical Requirements 4.4 Draining Requirements 4.4.1 Drain Pan Installation 4.4.2 Condensate Drain 4.5 Water Chemistry Requirements 5 Installation 5.1 Inspect Shipment 5.2 Placing the Water Heater 5.3 Plumbing 5.3.1 Closed System /Thermal Expansion 5.3.2 Relief Valves 5.3.3 Condensate Drain 5.3.4 Filling the Water Heater 5.4 Electrical 5.4.1 Electrical Connections 5.5 Ducting 5.5.1 Equivalent Feet for Duct Accessories 5.5.2 Duct Installation 6 Operation 6.1 Safety Precautions 6.2 End User Operation 6.2.1 Overview of Control 6.2.2 Turning on the Water Heater 6.2.3 Selecting Operation Mode 6.2.4 Water Temperature Setting 6.2.5 Vacation Mode 6.2.6 Schedule 6.2.7 Legionella Protection 6.2.8 Turning Off Water Heater 6.3 Demand Response 6.4 Advanced Options for Technician 6.4.1 Operating Parameters 6.4.2 Advanced Settings Installation and Operating Instructions 4 7 Maintenance 24 4 7.1 Drain Water Heater 24 7.2 Test the T&P Valve 25 6 7.3 Heating Elements 25 7 7.4 Anode Rod 26 8 7.5 Air Filter 26 8 8 Troubleshooting 27 8 8.1 Error code table 28 9 8.2 Thermal Cutout 29 9 8.3 Electric Resistance Specifications 29 9 8.3 Electrical Diagram 30 9 9 Water Heater Components 32 10 10 10 10 11 12 12 13 13 13 13 14 15 15 16 16 16 16 18 18 18 19 19 19 19 20 21 21 22 Bosch GreenTronic 7000 T Hybrid Electric Water Heater - BTC 755003301 C (06.2024) | 3 Installation and Operating Instructions 1 Key to Symbols and Safety Instructions 1.1 Key to Symbols Warnings In warnings, signal words at the beginning of a warning are used to indicate the type and seriousness of the ensuing risk if measures for minimizing danger are not taken. The following keywords are defined and can be used in this document: DANGER DANGER indicates a hazardous situation which, if not avoided, will result in death or serious injury. WARNING WARNING indicates a hazardous situation which, if not avoided, could result in death or serious injury. CAUTION CAUTION indicates a hazardous situation which, if not avoided, could result in minor to moderate injury. NOTICE NOTICE is used to address practices not related to personal injury. WARNING Indoor installation only! · DO NOT INSTALL OUTDOORS.This water heater is certified for indoor installation above freezing temperatures only. Failure to follow these instructions could result in FIRE, PROPERTY DAMAGE, and/or PERSONAL INJURY OR DEATH. DANGER Hazardous voltage! · Check the data plate on the water heater before installation to make certain the voltage shown is the same as the electric supply to the water heater. · This water heater must be connected only to a properly grounded electrical supply. Do not fail to properly ground this water heater (see chapter "Electrical Connections"). · Turn off the electrical supply before servicing this water heater. WARNING Improper or dangerous operation! · Do not use this water heater if it has damaged wiring, is not working properly, or has been damaged or dropped. Important information The info symbol indicates important information where there is no risk to people or property. 1.2 Safety Please read before proceeding The warranty on this water heater is in effect only when the water heater is installed, adjusted, operated, and maintained in accordance with these instructions. The manufacturer of this water heater will not be liable for any damages resulting from failure to comply with these instructions. Read these instructions thoroughly before proceeding. WARNING Fire, explosion! · This appliance shall not be installed in any location where flammable liquids are stored or vapors are likely to be present. Flammable vapors may be drawn to this water heater from other areas of the structure by air currents. WARNING Scald hazard! · Scald injury is heightened by increased water temperatures. Hot water can produce 3rd degree burns in 6 seconds at 140°F (60°C) and in 30 seconds at 130°F (54°C). · If the water heater setpoint is set too high there is serious potential for SCALDING. · Children, the disabled and the elderly are at highest risk of being scalded. WARNING Improper or dangerous operation! · Installation and service must be performed by a qualified installer or service agency. · Improper installation, adjustment, alteration, service or maintenance can cause injury, death, or property damage. Temperature 120 °F (48 °C) 125 °F (51 °C) 130 °F (54 °C) 135 °F (57 °C) 140 °F (60 °C) 145 °F (62 °C) 150 °F (65 °C) 155 °F (68 °C) Table 1 Time to Produce Serious Burn More than 5 minutes 1.5 to 2 minutes Approx. 30 seconds Approx. 10 seconds Less than 5 seconds Less than 3 seconds Approx. 1.5 seconds Approx. 1 second 4 | Bosch GreenTronic 7000 T Hybrid Electric Water Heater - BTC 755003301 C (06.2024) Installation and Operating Instructions When this water heater is supplying general purpose hot water requirements for use by individuals, a thermostatically controlled mixing valve for reducing point-ofuse water temperature is recommended to reduce the risk of scald injury. Contact a licensed plumber or the local plumbing authority for further information. WARNING Dangerous operation, personal injury! Water piping, fittings, and valves must be properly installed for the correct and safe operation of this water heater. Please note the following: · DO NOT install this water heater with iron piping.The system should be installed only with new piping that is suitable for potable (drink-able) water such as copper, CPVC or polybutylene · DO NOT use any pumps, valves, or fittings that are not compatible with potable water · DO NOT use valves that may cause excessive restrictions to water flow. Use full flow ball or gate valves only · DO NOT use 50/50 tin-lead solder (or any lead based solder) in potable water lines. ONLY use 95/5 tin/antimony or other equivalent materials · DO NOT tamper with heating elements, electrical connections, refrigerant circuit, or temperature and pressure relief valve. Tampering with any of these components is DANGEROUS and can result in property damage, severe injury or death. Tampering voids all warranties. Only qualified technicians should service the above components · DO NOT use with piping that has been treated with chromates, boiler seal, or other chemicals · DO NOT add any chemicals to the system piping which will contaminate the potable water supply WARNING Personal injury or death! · INGESTION HAZARD: This product contains a button cell or coin battery. · DEATH or serious injury can occur if ingested. · A swallowed button cell or coin battery can cause Internal Chemical Burns in as little as 2 hours. · KEEP new and used batteries OUT OF REACH of CHILDREN · Seek immediate medical attention if a battery is suspected to be swallowed or inserted inside any part of the body. · Battery type: CR2032 · Battery power supply: 3.0V · Remove and immediately recycle or dispose of used batteries according to local regulations and keep away from children. Do NOT dispose of batteries in household trash or incinerate. · Even used batteries may cause severe injury or death. · Call a local poison control center for treatment information. · Non-rechargeable batteries are not to be recharged. · Do not force discharge, recharge, disassemble, heat above (manufacturer's specified temperature rating) or incinerate. Doing so may result in injury due to venting, leakage or explosion resulting in chemical burns. · Ensure the batteries are installed correctly according to polarity (+ and -). · Do not mix old and new batteries, different brands or types of batteries, such as alkaline, carbon-zinc, or rechargeable batteries. · Remove and immediately recycle or dispose of batteries from equipment not used for an extended period of time according to local regulations. · Always completely secure the battery compartment. If the battery compartment does not close securely, stop using the product, remove the batteries, and keep them away from children. WARNING Personal injury! · This product can expose you to chemicals including Lead and Lead components, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov. FOR INSTALLATIONS IN THE STATE OF CALIFORNIA California Law requires that residential water heaters must be braced, anchored or strapped to resist falling or horizontal displacement due to earthquake motions. For residential water heaters up to 52 gallon capacity, a brochure with generic earthquake bracing Instructions can be obtained from: 2808 Metropolitan Place Pomona, CA. 91767 USA 1-888-883-0788 or ask a water heater dealer. FOR INSTALLATIONS IN THE STATE OF MASSACHUSETTS Massachusetts Code requires this water heater to be installed in accordance with Massachusetts 248-CMR 2.00: State Plumbing Code and 248-CMR 5.00. Applicable local codes govern installation. OWNER: Retain these instructions and warranty for future reference. Retain the original receipt as proof of purchase. Bosch GreenTronic 7000 T Hybrid Electric Water Heater - BTC 755003301 C (06.2024) | 5 Installation and Operating Instructions 2 Specifications Part Number Nominal Capacity DOE Rated Storage Volume First Hour Rating Water Connections Max. Water Pressure Temperature Setpoint Range Power Supply Electric Heating Elements Refrigerant Compressor Rated Input Compressor Heating Capacity Noise Level Ambient Operation Temperature Ambient Operation Temperature for Heat Pump Ingress Protection Rating Product Dimensions Product Net Weight Product Operating Weight Shipping Dimensions (H x W x D) Shipping Weight Table 2 Specifications by model TR7000T-50US TR7000T-50CA TR7000T-80US TR7000T-80CA 7-738-007-434 7-738-007-436 7-738-007-435 7-738-007-437 50 Gallon 80 Gallon 47 Gallon 75 Gallon 69 Gallon 91 Gallon ¾" NPT 150 PSI (1.03 MPa) 109 149 °F (43 - 65°C) 208-240V / 30 A (1Ph 60Hz) 2 x 4,500 W R-134a 408 W 1,593 W < 50 dB(A) 5 115 °F (-15 - 46°C) 37 109 °F (3 - 43°C) IP21 66 ½" x 21 ¾"(169 cm x 56 cm) 74 ½" x 25 ¾" (190 cm x 66 cm) 218 lbs (99 kg) 293 lbs (133 kg) 593 lbs (269 kg) 901 lbs (409 kg) 75" x 28 ¾" x 27 ½" (191 cm x 73 cm x 70 cm) 79 ½" x 30 ¼" x 29" (202 cm x 77 cm x 74 cm) 265 lbs (121 kg) 360 lbs (164 kg) 6 | Bosch GreenTronic 7000 T Hybrid Electric Water Heater - BTC 755003301 C (06.2024) 3 Dimensions Installation and Operating Instructions B D E A C F J G H Figure 1 Model Number TR7000T-50US TR7000T-50CA Height A Diameter B Electrical Knockout C Dimensions in inches (floor to) Condensate Drain* T&P Relief Valve Hot Water Outlet D E F Cold Water Inlet G 66 ½ (169 cm) 21 ¾ (56 cm) 53 ½ (136 cm) 49 ½ (126 cm) 39 ¾ (101 cm) 39 ¾ (101 cm) 5 ½ (14 cm) TR7000T-80US TR7000T-80CA 74 ½ (190 cm) 25 ¾ (66 cm) 61 ½ (157 cm) 57 ½ (146 cm) 46 ¾ (119 cm) 46 ¾ (119 cm) 5 ½ (14 cm) Table 3 * Not visible from the front of the water heater Drain Lower Heating Valve Element H J 5 ½ (14 cm) 14 (36 cm) 5 ½ (14 cm) 12 (31 cm) Bosch GreenTronic 7000 T Hybrid Electric Water Heater - BTC 755003301 C (06.2024) | 7 Installation and Operating Instructions 4 Getting Started 4.1 Location WARNING Fire, explosion! · Areas where flammable liquids (gasoline, solvents, liquid propane, butane, etc.), or other substances which emit flammable vapors are stored may not be suitable for water heater installation. Natural air movements can carry flammable vapors varied distances from where they are stored or used. The water heater thermostat contacts can arc and ignite these vapors causing property damage, serious burns or death. Never store or use flammable substances in the same room or area containing an electric water heater. Gasoline or other flammable substances must never be used in the same room or area containing a water heater or other spark-producing device. WARNING Personal injury, product damage, property damage! · Indoor installation only. Do not install outside. Failure to follow this warning could result in property damage, severe personal injury, or death. 4.2 Air Flow Requirements This water heater uses the heat in the air to heat up the water in the tank. Therefore a minimum enclosed space of 700 ft³ is required to ensure desired operation. Not enough air flow may result in increased usage of the electric heating elements and therefore reduction of efficiency and increased power usage. If installation place is smaller than 700 ft³, consider louvered door options to the space or ducting the air flow to and from the unit. Refer to the options shown below. Air flow options and space requirements: Air Flow Opening Enclosed room Ducting none Minimum Installation Space Requirement (ft³) 700 (19.8 m3) Local codes and requirements in your area may require that the water heater be installed in such way that the bottom heating element is elevated at least 18 inches from the floor. This residential water heater should be installed in a clean, dry location with an ambient temperature always above freezing and close to where a good electrical connection can be made. The unit should be as close as possible to major usages of hot water. The unit can be installed on a combustible floor with 0 inches minimum clearance between the rear of the water heater and combustible walls. The water heater should be located so that all electrical controls, air filter, heating elements, drain valve and water connections are accessible. For easy servicing the anode rod increased top clearance is recommended. Refer to table 4 for required clearance for operation and maintenance. If the unit is installed in an enclosed room and not fully ducted, a space of 700 ft³ (19.8 m3) is required to provide enough airflow. Insufficient space will cause higher power consumption. Check space requirements below in chapter 5.2. To have maximum efficiency, install in an area that remains in temperature range between 37 °F (3 °C) and 109 °F (43 °C) to ensure operation of heat pump. In normal conditions the water heater operates below 49dB(A), which is comparable to a quiet refrigerator, but keep this in mind when choosing a location. Air Exhaust Required Clearance for Operation 6" (15.3 cm) Top 20" (51 cm) Table 4 Required minimum clearances Required Clearance for Service 6" (15.3 cm) 50 Gallon: 25.5" (65 cm) 80 Gallon: 32" (81.3 cm) Table 5 Air Flow Opening Fully louvered door OR upper & lower louvers in door OR upper louver with undercut door Table 6 Ducting none OR Minimum Installation Space Requirement (ft³) 84 (2.4 m3) OR undercut door opening 8 | Bosch GreenTronic 7000 T Hybrid Electric Water Heater - BTC 755003301 C (06.2024) Installation and Operating Instructions Air Flow Opening Ducting Upper louver OR undercut door Inlet OR outlet Minimum Installation Space Requirement (ft³) None OR undercut door opening Table 7 Air Flow Opening None Ducting Inlet AND outlet Minimum Installation Space Requirement (ft³) None 4.4 Draining Requirements NOTICE Property damage! · This water heater must be located in an area where leakage of the tank or connections will not result in damage to the area adjacent to the water heater or to lower floors of the structure. When such locations cannot be avoided, a suitable drain pan must be installed under the water heater. Such pans must be at least 2 inches deep having a minimum length and width of at least 2 inches greater than the diameter of the water heater and should be piped to an adequate drain. 4.4.1 Drain Pan Installation It is recommended to install a drain pan under the water heater, especially if leaks can substantially destroy the building structure. In some cases code may even require it. Water Heater Size 50 Gallon 80 Gallon Table 10 Minimum Required Drain Pan Diameter 26" (66 cm) 30" (77 cm) 4.4.2 Condensate Drain The water heater produces condensate during operation which must be drained properly. Do not use drain pan for condensate. Provide proper drainage with piping or a condensate pump. The condensate does not need to be neutralized. The water heater comes supplied with a 6 foot long, 1/2 inch diameter drain hose. Table 8 4.3 Electrical Requirements Hardwire the water heater per local codes. Electrical Requirements Required breaker size: Required wiring gauge: Table 9 208V/240V (60Hz) 30A double pole breaker 10 AWG Power supply for a condensate pump is not supplied from the water heater. Bosch GreenTronic 7000 T Hybrid Electric Water Heater - BTC 755003301 C (06.2024) | 9 Installation and Operating Instructions 4.5 Water Chemistry Requirements NOTICE Product damage! · Chemical imbalance of the water supply may affect efficiency and cause severe damage to the appliance and associated equipment. Water quality must be professionally analyzed to determine whether it is necessary to treat the water. Various solutions are available to adjust water quality. Adverse water quality will affect the reliability of the system. In addition, operating temperatures above 135°F (57 °C) will accelerate the build-up of lime scale and possibly shorten appliance service life. Failure of an appliance due to lime scale build-up, low pH, or other chemical imbalance IS NOT covered by the warranty. 5 Installation WARNING Personal injury, property damage! · This water heater must be installed in accordance with all national, state and local codes and ordinances. If additional information are desired, the latest edition of the National Electric Code "NFPA 70" are recommended. This code can be obtained from the National Fire Protection Association at Battery March Park, Quincy, MA 02269. For Canadian installations, refer to the Canadian Electric Code (CSA22.1). A copy can be purchased from the Canadian Standards Association at 5050 Spectrum Way, Mississauga, ONT L4W 5N6. The water must be potable, free of corrosive chemicals, sand, dirt, and other contaminants. It is up to the installer to ensure the water does not contain corrosive chemicals or elements that can damage the water heater. Potable water is defined as drinkable water supplied from utility or well water in compliance with EPA secondary maximum contaminant levels (40 CFR Part 143.3). If the water contains contaminants higher than outlined by the EPA, water treatment is required. If you suspect that your water is contaminated in any way, discontinue use of the appliance and contact an authorized technician or licensed professional. Following water chemistry limits must be observed for the water supply: pH Hardness Chlorine Concentration Total Dissolved Solids Conductivity S/cm Table 11 Water Chemistry Limits Value 6.5 to 8.5 5 to 14 Grain/US Gallon 100 ppm 500 ppm 1200 Before proceeding with the installation, close the main water supply valve, open a water faucet to relieve the water pressure, and then close the faucet. This water heater is not intended for space heating applications. 5.1 Inspect Shipment Items included in the packaging: · Hybrid electric water heater · Installation manual · Warranty document · Insulation pipe sleeving (4) · Condensate drain pipe INSPECT SHIPMENT - for possible damage. · The manufacturer's responsibility ceases upon delivery of goods to the shipper in good condition. Any claims for damage, shortage in shipments, or no delivery must be filed immediately against carrier by consignee. · Do not install if the tilt sensor on the outer packaging has tripped. 5.2 Placing the Water Heater Make sure to read chapter "Getting Started" which provides relevant information to location, space and drain requirements. 1. Remove carton box over unit. 2. Place drain pan. 3. Lift water heater from the base (foam is bolted to the pallet). 4. Position water heater to maintain access and clearance requirements. 10 | Bosch GreenTronic 7000 T Hybrid Electric Water Heater - BTC 755003301 C (06.2024) 5.3 Plumbing Installation and Operating Instructions Condensate Drain Relief Valve Figure 2 Drain Pan Hot Water Outlet Shut Off Valve Cold Water Inlet Drain Valve Thermal Expansion Tank It is highly recommended to use dielectric unions. Dielectric unions can help prevent corrosion caused by small electric currents common in copper water pipes and can help extend the life of the water heater. · The water connections of the water heater are located on the side · The cold water connection is on the bottom · The hot water connection is on the top · By providing unions and shut off valves on the water connections, the water heater may be disconnected for servicing when necessary · Installation of mixing valve (field supplied) is recommend if not already required by code · All hook-ups must comply with all local codes Water supply pressure should not exceed 80% of the working pressure of the water heater. The working pressure is stated on the data plate. If this occurs, a pressure limiting valve with a by-pass may need to be installed in the cold water inlet line. This should be placed on the supply to the entire building in order to maintain equal hot and cold water pressures. If the water heater is enrolled in a utility DR program that allows the utility to temporarily increase the storage temperature setpoint higher than set by the user, a thermostatic mixing valve shall be installed. If used, the thermostatic mixing valve shall: · Be certified to ASSE 1017 - Performance Requirements for Temperature Actuated Mixing Valves in Hot Water Distribution Systems · Be installed according to the manufacturer's installation instructions · Be configured to limit the delivered water temperature to that required by the user Heat cannot be applied to the water fittings on the water heater as they may contain nonmetallic parts. If solder connections are used, solder the pipe to the adapter before attaching the adapter to the hot and cold water fittings. Always ensure that all fittings are free from leaks. Bosch GreenTronic 7000 T Hybrid Electric Water Heater - BTC 755003301 C (06.2024) | 11 Installation and Operating Instructions 5.3.1 Closed System /Thermal Expansion NOTICE Product damage, property damage! · Do not install a check valve or other back flow device that creates a closed system unless required by code. A closed system may result in frequent discharge due to thermal expansion from the pressure relief valve. Periodic discharge of the temperature and pressure relief valve may be due to thermal expansion in a closed water supply system. The water utility supply meter may contain a check valve, backflow preventer or water pressure reducing valve. This will create a closed water system. During the heating cycle of the water heater, the water expands causing increased pressure inside the water heater. The temperature and pressure relief valve may discharge hot water under these conditions which results in water escaping from the valve and a build-up of lime on the relief valve seat. To prevent this from happening, it is recommended to: · Install a diaphragm-type expansion tank that is suitable for potable water on the cold water supply line. The expansion tank must have a minimum capacity of 1.5 US gallons for every 50 gallons of stored water. 5.3.2 Relief Valves WARNING Personal injury, property damage! · The pressure rating of the relief valve must not exceed 150 PSI, and not exceed the maximum working pressure of the water heater as marked on the rating plate. The temperature & pressure relief valve: · Must not be in contact with any electrical part · Must be connected to a proper discharge line which terminates at an adequate drain · Must not exceed the working pressure shown on the data plate of the water heater · Must be of materials listed for hot water distribution Discharge Line WARNING Scald hazard, property damage! · Discharging water may be hot and can cause scald injuries and property damage. Discharge lines must be properly installed and piped to an adequate drain. The discharge line: · Must not be smaller than the pipe size of the relief valve · Must not be capped, blocked, plugged or contain any valve between the relief valve and the end of the discharge line · Must terminate 6 inches above a floor drain or external to the building · Must be capable of withstanding 250°F (121°C) without distortion · Must be installed to allow complete drainage of both the temperature and pressure relief valve and discharge line WARNING Personal injury, property damage! · Failure to maintain a listed, adequately sized temperature & pressure relief valve will release the manufacturer from any claim which might result from excessive temperatures and pressures. This water heater comes equipped with a temperature & pressure relief (T&P) valve with a pressure rating of 150 PSI. Provide tubing so that it terminates not more than 6 inches (152 mm) above and not less than two times the discharge pipe diameter above the floor or flood level rim of the waste receptor,or as required by local code, and does not contact any live electrical part. The discharge opening must not be blocked or reduced in size under any circumstances. Your local jurisdictional authority, while mandating the use of a temperaturepressure relief valve complying with ANSI Z2 I .22·CSA 4.4 and ASME, may require a valve model different from the one furnished with the water heater. Compliance with such local requirements must be satisfied by the installer or end user of the water heater with a locally prescribed temperature-pressure relief valve installed in the designated opening on the water heater in place of the factory furnished valve. For safe operation of the water heater, the relief valve must not be removed from its designated opening or plugged. Piping used should be of a type approved for hot water distribution. The discharge line must be no smaller than the outlet of the valve and must pitch downward from the valve to allow complete drainage (by gravity) of the relief valve and discharge line. The end of the discharge line should not be threaded or concealed and should be protected from freezing. No valve of any type, restriction or reducer coupling should be installed in the discharge line. Excessive length, over 30 feet, or use of more than four elbows can cause restriction and reduce the discharge capacity of the valve. Relief Valve Discharge Line 6" Maximum Floor Drain Figure 3 Relief valve installation 12 | Bosch GreenTronic 7000 T Hybrid Electric Water Heater - BTC 755003301 C (06.2024) 5.3.3 Condensate Drain The water heater will produce condensate during operation. Install supplied drain pipe to properly drain the condensate. Neutralizer is not required. Condensate Drain Installation and Operating Instructions 5.4 Electrical 5.4.1 Electrical Connections WARNING Fire, shock hazard, property damage! · Do not use this water heater with any electrical supply voltage other than specified.Check the data plate on the front of the water heater for the correct voltage rating. Failure to use the correct voltage can result in death, serious bodily injury or property damage. If you have any questions or doubts consult your electrical utility company before installing this water heater. WARNING Hazardous voltage! · Qualified electrician required. · Before installing electrical wiring, make sure the electrical supply to the water heater is turned "OFF". WARNING Improper operation! · DO NOT ALTER any of the internal wiring. Figure 4 Condensate drain 5.3.4 Filling the Water Heater After piping and hook-ups are completed: 1. Open all hot water fixtures. 2. Open shut off valve on cold water inlet and hot water outlet to fill tank. 3. As each hot water outlet delivers water free from air, it can be shut off. 4. Check the system for leaks. NOTICE Product damage! · Before energizing the water heater, make certain that the water heater is completely full of water and that the cold water inlet valve is open. If the heating elements are not completely immersed in water at all times, they will be damaged if energized for even a short time. Bosch GreenTronic 7000 T Hybrid Electric Water Heater - BTC 755003301 C (06.2024) | 13 Installation and Operating Instructions When making the electrical connections, always make sure: · The electrical supply has the proper overload fuse or breaker protection · Wire sizes and connections comply with all applicable codes · Wiring is enclosed in approved conduit (if required by local codes) · The water heater and electrical supply are properly grounded To connect wiring: 1. Provide a separate disconnect switch for the water heater. 2. Open knockout to gain path for wires into the power supply box. 3. Open the power supply box. 4. Optional: Remove CTA 2045 port cover and remove connector to gain better access to terminal block. 5. Pull wires through the knockout and connect wires to the terminal block. 6. Properly ground the unit. 7. Close all covers. WARNING Shock hazard! · Check wire tightness from and to power supply terminal block. Ground Screw Terminal Block Power Supply Cover Conduit Connector Figure 5 Wiring connection White Black Yellow L1 L2 Figure 6 208VAC 60Hz 240VAC 60Hz 5.5 Ducting If ducting is installed, make sure to adjust F40 setting to 1. See chapter Advanced Settings for more details. Check chapter on Air Flow Requirements if ducting is necessary. Ducting is an option to ensure enough air flow. Before designing the duct system, always check with local building and HVAC codes. Read these instructions carefully for ducting unit to outdoors or other spaces. Any ducting configurations that do not comply with these instructions are not supported. This water heater must be ducted separately from other appliances. Only use ducting approved for HVAC applications. Ensure ducting is adequately supported and that UL Certified terminations are used. HVAC approved indoor registers are required. To minimize transmission of vibration or noise, rigid ducting must be isolated from floor joists or other structural members. Utilize a short section (12" or larger) of flexible duct between the water heater and rigid ducting as an isolation method. Every foot of flexible ducting counts as three feet of rigid ducting. Ducting must be insulated per HVAC codes and to prevent condensation. Cold air exhaust must be sufficiently away from structures to prevent condensation on surfaces. Increasing resistance to airflow and regular filter maintenance will maximize heater performance. Providing unit with warm moist air is beneficial to the performance of the water heater. Considerations when planning the duct system: · Use direct route for running the ducting. To maximize airflow, reduce elbows/bends used in layout as much as possible · Utilize largest duct size possible · The total length of duct is the length on the inlet plus the length on the outlet · Inlet and outlet ducting do not have to be the same length. · Elbows, bends and termination decrease total allowable ducting length. See Table 13 Duct Type / Diameter 8" 7" 6" Rigid 357 ft (109 m) 168 ft (51 m) 68 ft (21 m) Flexible 131 ft (40 m) 68 ft (21 m) 26 ft (7.9 m) Table 12 Maximum total equivalent duct length 5" 18 ft (5.5 m) -- 14 | Bosch GreenTronic 7000 T Hybrid Electric Water Heater - BTC 755003301 C (06.2024) Installation and Operating Instructions 5.5.1 Equivalent Feet for Duct Accessories Elbows/Bends An elbow is defined as a rigid duct with a flex bends greater than 45°. If a bend is needed that has a tighter radius than its diameter, then a rigid elbow must be used. Table 13 lists the maximum number of elbows/bends allowed. Terminations/Registers Table 13 accounts for equivalent feet for terminations includes the rodent screen and it accounts for the duct reducer and termination/register. Smaller diameter terminations and registers with more than a 2ft (0.6m) connection should not be used. Damper An approved damper should be installed no further than 10ft (3m) of rigid ducting total (two elbows equivalent) from the unit if ducting to the outside while using an exhaust duct only (no intake duct). This action will prevent outside air from entering the living space. 5.5.2 Duct Installation NOTICE Product damage! · Horizontal termination to the outside is recommended to avoid water getting into the unit. Determine the duct terminal location and create a hole through the exterior wall to accommodate the UL Certified Termination that is sufficient to prevent water entering the water heater. 8" Duct Adapters are available for this unit with following part number: Adaptor Type Duct Adapter Kit Table 13 Duct adapter kit part number Part Number 7738007443 Wall Air Inlet Cold Air Exhaust 6" Clearance for filter Exhaust Duct Adapter Intake Duct Adapter Figure 7 Horizontal duct installation example Bosch GreenTronic 7000 T Hybrid Electric Water Heater - BTC 755003301 C (06.2024) | 15 Installation and Operating Instructions 6 Operation CAUTION Fire, explosion! · Hydrogen gas (EXTREMELY FLAMMABLE) can be produced in a hot water system served by this water heater that has not been used for a period of two weeks or more. It is recommended that the hot water faucet be opened for several minutes at the kitchen sink before using any electrical appliance connected to the hot water system. · You will hear a strange sound of air escaping if hydrogen is present. Do not have open flame or smoke near any faucet if this is the case. 6.1 Safety Precautions WARNING Improper operation! · If the water heater has been subjected to fire, flood or physical damage, disconnect all power to water heater. DO NOT operate the water heater again until it has been checked by a qualified service technician. · DO NOT use this water heater if any part has been under water. DO NOT attempt to operate or repair the unit! It must be replaced. 1. Fill water heater completely before supplying power to the water heater. 2. If cold water supply shut-off valve is closed, DO NOT turn on water heater 3. It is recommended that a qualified person or service technician performs the work. 6.2 End User Operation 6.2.1 Overview of Control Buttons Overview Demand Response Mode Up Clock Operation Light Copy On/Off Settings Child Lock Down Electric Elements Delete Back Confirm Figure 9 Display Icons Overview 15 17 7 10 6 11 12 13 1 16 18 14 9 4 3 Display Figure 10 8 52 Operation Figure 8 16 | Bosch GreenTronic 7000 T Hybrid Electric Water Heater - BTC 755003301 C (06.2024) Installation and Operating Instructions No. Icon Description Main Display: This icon will be illuminated if the screen is unlocked. It shows the following values: · The measured water temperature in the tank 1 · The setpoint temperature · Remaining days of vacation in vacation mode · Error code if fault is detected, see troubleshooting section for more details 2 Time and Clock Setting: This icon shows the current time. This value must be set upon installation. It also shows the time when using the scheduling function. Scheduling: This icon is used to show the scheduling programmed by the user. If no scheduling is used, the icon will not be present. For the scheduling function: 3 · The day that has been scheduled will be displayed · The dots and dashes represent different scheduled on/off cycles on a given day · The day and time that is being scheduled will flash on and off when being set 4 Maintenance Reminder: This icon will flash to remind the user to conduct maintenance on the product. The time interval is default to 365 days and can be set in the engineering settings. 5 Child Lock: This icon will be displayed when the child lock is activated. This will prevent all operational buttons from being pressed. 6 Hybrid Mode: This icon will be displayed when hybrid mode is selected. This mode will minimize recovery time while still utilizing the heat pump and allows the heating element and heat pump to run simultaneously under certain operating conditions. 7 Electric Resistance Heating Element: This icon is displayed when the heating element is being used to heat the water. The electric resistance element button can also be used to manually activate the heating elements if the operation mode and conditions allow. 8 Scald Risk Alert: This icon is displayed when the temperature is higher than 122°F (50°C) to notify the user of high water temperatures. 9 Error Alert: This icon is displayed when there is an error and/or lockout. Contact a qualified technician if activated. 10 Vacation Mode: This icon is displayed when vacation mode is selected. In this mode, the tank will maintain the temperature at 59°F (15°C) to save energy. 11 E-Heater Mode: This icon is displayed when E-Heater mode is selected. This mode will only utilize the electric resistance heating elements to heat up the water. 12 Economy Mode: This icon is displayed when economy mode is selected. This is the default mode and will heat the water as high as possible before using electric resistance heating elements. 13 Heat Pump Mode: This icon is displayed when heat pump mode is selected. This mode will allow only the heat pump to function unless the unit is under certain extreme operating conditions. 14 Invalid: If a function or button is invalid, the icon will temporarily flash. 15 Set Temperature: This icon is displayed when the user is setting the water heater temperature. 16 Clock: This icon is displayed when the clock is being set. 17 Heat Pump: This icon is displayed when the heat pump is operating. Demand Response (DR): This icon is displayed when the user presses the "DR" button to turn on demand response functionality. If a UCM is connected to 18 the unit and the water heater receives a power limit request, basic or advanced load request, or emergency curtailment request, it will flash slowly. If there is an emergency shutdown request, the icon will flash quickly. Table 14 Display icon descriptions Bosch GreenTronic 7000 T Hybrid Electric Water Heater - BTC 755003301 C (06.2024) | 17 Installation and Operating Instructions 6.2.2 Turning on the Water Heater NOTICE Product damage! · Before supplying power to the water heater make sure the water heater is filled with water! Damage caused by dry fire will not be covered by warranty. To turn on the water heater supply power to the unit and press the on/off button. The water heater will not supply hot water instantly. Depending on the operation conditions and the selected mode and temperature the unit might need up to 1 day to reach target state. 6.2.3 Selecting Operation Mode The water heater has 5 operation modes. Economy is the default operation mode. To change the operation mode, press the Mode button as often as needed to reach preferred operation mode. New operation mode will be saved immediately. The Hybrid mode and the E-Heater mode expire after 72 hours, the water heater will automatically switch to Economy mode after expiration. Refer to below table for more details. Operation Mode Efficiency Recovery Remarks VACATION Vacation mode will put the water heater to target set temperature of 59 F to pro- N/A N/A tect the water heater while not use for the length of the selected days (1 360 days). Further details in chapter 6.2.5. HYBRID Hybrid mode utilizes the heat pump and the electric heating elements to heat up Low High the water. Efficiency is lower and the wa- ter heats up faster compared to economy mode. Only active for 72 hours. E-HEATER Very Low Very High E-Heater only utilizes the electric heating elements to heat up the water. It is the least economic mode but is the fastest way to heat up the water in the water heater tank. Only active for 72 hours. ECONOMY Economy mode utilizes the heat pump and the electric heating elements to High Low heat up the water. It's the default mode. Efficiency is high while it takes longer to heat up the water. HEAT PUMP Very High Very Low Heat pump mode only utilizes the heat pump to heat up the water. It is the most efficient way to heat up the water but also takes the longest. Table 15 Operation modes 6.2.4 Water Temperature Setting DANGER Scald hazard! · There is a hot water scald potential if the thermostat is set too high. Households with small children, disabled, or elderly persons may require a 120°F (49°C) or lower thermostat setting to prevent contact with HOT water. The temperature of the water in the water heater can be selected between 109 149 °F (43 - 65 °C). Safety and energy conservation are factors to be considered when selecting the water temperature setting of the water heater. The lower the temperature setting, the greater the savings in energy and operating costs. To comply with safety regulations the temperature is factory set at 120°F (49°C) for US models and 140°F (60°C) for Canadian models. Temperature set point may need to be changed depending on local code requirements. Water temperature above 125°F (52°C) can cause severe burns or death from scalding. Be sure to read and follow the warnings outlined in this manual and on the label on the outside of the water heater. Mixing valves are recommended for reducing point of use water temperature by mixing hot and cold water in branch water lines. It is recommended that a mixing valve complying with the Standard for Temperature Actuated Mixing Valves for Hot Water Distribution Systems, ASSE 1017 be installed. Contact a licensed plumber or the local plumbing authority for further information. When used in demand response applications a thermostatic mixing valve conforming to ASSE 1017 shall be installed on the hot water supply line following all manufacturer installation instructions. To set a new temperature for the water heater, press the up or down button, to increase or decrease the temperature in 1-degree steps. The new temperature will be saved immediately. Figure 11 18 | Bosch GreenTronic 7000 T Hybrid Electric Water Heater - BTC 755003301 C (06.2024) Installation and Operating Instructions 6.2.5 Vacation Mode The water heater will keep the temperature in the tank at 59 °F (15 °C). Frost protection is active. To put the water heater in vacation mode for the desired amount days, bring the water heater to operation mode vacation by pressing the mode button. The display will show the number of days the unit remains in vacation mode. To change the number of days, press up and down button to change between 1 360 days. Press confirm button to save the change. 6.2.6 Schedule The water heater is equipped with two schedule modes, daily schedule and weekly schedule. The schedule is off when none of the following symbols are shown on the display: Week, Day, or Clock. To turn on and off the schedule, press the clock button to toggle between week schedule, day schedule or schedule off. Set up clock and weekday before scheduling. Set up clock and weekday by pressing and holding the clock button for 3 seconds. The weekdays will flash. Use the up and down button to select today's weekday. Press the confirm button to save. Next, change the time by using the up and down button. Press the confirm button again to save. Weekly Schedule The weekly schedule allows to program six on and off times for the water heater for each weekday individually. To set up a weekly schedule follow steps: 1. Press the clock button until "WEEK" is shown on the display. 2. Press the confirm button to start setting up the schedule. Choose day, then start time, end time to set maximum 6 slots for every single day. 3. Set operation mode by pressing the mode button. 4. Set target temperature by pressing the up and down button. 5. Use the copy button to copy the schedule from one day to another day. Daily Schedule The daily schedule allows to program six on and off times. The schedule will be repeated every day. To set up a daily schedule follow steps: 1. Press the clock button until "DAY" is shown on the display. 2. Press the confirm button to start setting up the schedule. Choose start time and end time for maximum 6 slots. 3. Set operation mode by pressing the mode button. 4. Set target temperature by pressing the up and down button. 6.2.7 Legionella Protection This water heater has a function to prevent legionella growth. If turned on the unit will raise the temperature inside the tank to a temperature of 140 - 158°F (60 - 70 °C) depending on the settings (default: 149°F /65°C). The temperature will be hold for 30 minutes. DANGER Scald hazard! Scald injury is heightened by increased water temperatures. Hot water can produce 3rd degree burns in 6 seconds at 140°F (60°C). Mixing valve must be installed when legionella protection function is enabled. If the user wants to use the function refer to the advanced settings (chapter 6.4.2) F07, F09, F17 and F26. 6.2.8 Turning Off Water Heater To stop using the water heater for a longer time, check vacation mode option, otherwise: 1. Turn off water heater by pressing on/off button 2. Disconnect power to the water heater 3. To prevent freeze damage and/or the buildup of hydrogen gas, drain the water heater completely by opening the drain valve on the bottom of the unit, if you are leaving the unit off for an extended period of time. Bosch GreenTronic 7000 T Hybrid Electric Water Heater - BTC 755003301 C (06.2024) | 19 Installation and Operating Instructions 6.3 Demand Response If the water heater is enrolled in a utility DR program that allows the utility to temporarily increase the storage temperature setpoint higher than set by the user, a thermostatic mixing valve shall be installed. If used, the thermostatic mixing valve shall: · Be certified to ASSE 1017 - Performance Requirements for Temperature Actuated Mixing Valves in Hot Water Distribution Systems · Be installed according to the manufacturer's installation instructions. · Be configured to limit the delivered water temperature to that required by the user. The water heater is equipped with a demand response port, the CTA-2045 port, which is located above the electric wiring. Different programs might be offered by utilities and service providers to use the port. Bosch does not supply the UCM module which connects to the CTA-2045 port, nor offers any programs to take part in. Junction Box Cover CTA 2045 Port Nominal 3/4" size mixing or tempering valve (refer to warning above). Follow mixing or tempering valve manufacturer's instructions for installation of the valve Hot water outlet 3/4" Tempered domestic hot water supply to house Cold water inlet UCM Module (not supplied) Figure 12 When a UCM module for demand response is installed, demand response will be activated. DR will show up in the display. When the unit is actively controlled through the module, the DR icon will flash. To interrupt demand response control, press the DR button. DR will disappear from the display. Figure 13 Installation with thermostatic mixing valve Demand Response can only be deactivated for 72 hours. After 72 hours demand response will be activated automatically again. 20 | Bosch GreenTronic 7000 T Hybrid Electric Water Heater - BTC 755003301 C (06.2024) 6.4 Advanced Options for Technician 6.4.1 Operating Parameters These units are values only and cannot be changed 1. Press the settings button once to read out various sensor values and settings of the water heater. Refer to below table. Figure 14 2. Press down button to scroll to the next item. Item Description Unit Value expected Tank temperature at °F or °C (depends upper heating element on F01 settings) Variable Tank temperature at lower heating element °F or °C (depends on F01 settings) Variable N/A not available N/A --- Heat pump stop temperature °C Refrigerant temperature °F or °C (depends into evaporator on F01 settings) Air intake temperature °F or °C (depends on F01 settings) Refrigerant temperature °F or °C (depends after compressor on F01 settings) 65 (equals 149 °F) Variable Variable Variable Refrigerant temperature into compressor (suction line) °F or °C (depends on F01 settings) Variable N/A not available N/A --- N/A not available N/A --- Legionella protection set point temperature °C 65 (equals 149 °F) Current amperage draw A Variable (0 25) Fan speed RPM x 10 Variable (0 140) EPROM N/A Variable Installation and Operating Instructions Item Description Expansion valve opening Compressor status Unit 000 format Value expected Variable (Status indication) 0 (off) or 1 (on) N/A not available N/A --- N/A not available N/A --- Fan type Binary 1 Heating type Binary 1 Compressor type Binary 1 N/A not available N/A Tank capacity Liters N/A not available Product type N/A Binary --- 170 (TR7000T-50CA) 190 (TR7000T-50US) 280 (TR7000T-80CA) 300 (TR7000T-80US) --- 0 (hybrid electric water heater) Software version 000 format Variable Display software version N/A not available 000 format N/A Variable 0 N/A not available N/A 1 Region Error history: Most recent error code Error history: Second recent error code Error history: Third recent error code Binary 0000 format 0000 format 0000 format 2 Variable Variable Variable Maintenance reminder Days Variable Set point temperature °F or °C (depends on F01 settings) End of operating parameters menu N/A Table 16 Operating parameters Variable --- Bosch GreenTronic 7000 T Hybrid Electric Water Heater - BTC 755003301 C (06.2024) | 21 Installation and Operating Instructions 6.4.2 Advanced Settings WARNING Improper or dangerous operation! · The following settings are explicitly for a qualified installer or service agency. Press the settings button for more than 3 seconds to enter advanced settings. Figure 15 Item Description F01 Unit conversion for temperature display F02 Maintenance reminder F03 Time for maintenance reminder F04 Reset maintenance time F05 Clear error code history F06 Electric heating elements F07 Legionella protection F08 Electric heating element auto activation temperature F09 Legionella protection cycle time (hour) F10 Not applicable to this product F11 Set vacation mode temperature F12 Not applicable to this product F13 Not applicable to this product F14 Time until electric heating element activates when heat pump is not able to increase tank tempeature F15 Dry fire protection F16 Overcurrent protection F17 Legionella protection temperature F18 Maximum temperature setpoint Table 17 Advanced Settings Options 0 Celsius 1 Fahrenheit 0 No maintenance reminder 1 Maintenance reminder (default) Select 30 365 days (default: 365) Select 1 and confirm to reset day count of maintenance reminder Select 1 and confirm to clear error code DO NOT ADJUST (default: 1) 0 off (default) 1 on (SCALD RISK, refer to chapter 4.2.6) DO NOT ADJUST (default: 5) Select hour of day: 0 - 23 (default: 23) Select 10 - 20°C (equals 50 - 68°F) Select 1 - 150; Unit: 10 minutes (default: 84 equals 840 minutes/14 hours) DO NOT ADJUST (default: 1) DO NOT ADJUST (default: 1) Select 60 - 70°C (equals 140 - 158°F) Select 65 - 70°C (equals 149 - 158°F) 22 | Bosch GreenTronic 7000 T Hybrid Electric Water Heater - BTC 755003301 C (06.2024) Installation and Operating Instructions Item Description F19 E-Heater mode expiration after 72 hours F20 Hybrid mode expiration after 72 hours F21 Modbus address F22 Not applicable to this product F23 Reset unit to factory settings F24 Not applicable to this product F25 Not applicable to this product F26 Legionella protection cycle time (minutes) F27 Activation of electric heating element when heat pump is not able to increase tank temperature F28 Not applicable to this product F29 Not applicable to this product F30 Backlight behavior F31 Not applicable to this product F32 Not applicable to this product F33 Not applicable to this product F34 Mute sound F35 Automatic child lock Options 0 off 1 on (default) 0 off 1 on (default) Not applicable (default: 1) Select 1 and confirm to reset Select minutes of the hour: 0 - 59 (default: 0) 0 off 1 on (default) 0 Backlight always on 1 Backlight turns off after 3 seconds 0 sound is on (default) 1 sound is off 0 off (default) 1 on F36 Not applicable to this product F37 Not applicable to this product F38 Auto shutoff valve leak protection F39 Manual activation of legionella protection F40 Duct settings Table 18 Advanced Settings Continued 0 off (default) 1 on 0 off (default) 1 on 0 no duct 1 or 2 select if duct is installed Bosch GreenTronic 7000 T Hybrid Electric Water Heater - BTC 755003301 C (06.2024) | 23 Installation and Operating Instructions 7 Maintenance DANGER Hazardous voltage! · Before removing any access panels or servicing the water heater make sure the electrical supply to the water heater is disconnected. Failure to do this may result in DEATH, SERIOUS BODILY INJURY OR PROPERTY DAMAGE. WARNING Modification, tampering! · Tampering with the electrical heating elements, electrical connections, refrigerant circuit, or temperature and pressure relief valve is dangerous and may result in serious injury or death. Tampering voids all warranties. Only properly trained, qualified service personnel should service these components. Do not attempt to modify or change this water heater in anyway. · Modifying or rewiring internal components by unauthorized persons will void the warranty, can nullify the Underwriter's Laboratories (UL) certification of the water heater and could result in property damage or personal injury for which the manufacturer cannot be responsible. CAUTION Personal injury, product damage! · Do not use this water heater if any part has been under water. Immediately call a qualified service technician to replace any part of the control system which has been under water. Proper preventative maintenance is required to maintain the warranty and will significantly extend the life of the water heater. To obtain service on your water heater when adjustment, repair, or routine maintenance is required, it is suggested that you first contact your installer, plumbing contractor or previously agreed upon service agency. Following maintenance is required: Required Maintenance Drain Water Heater Test T&P Valve Heating Elements Anode Rod Air Filter Ducting (if installed) Table 19 Regular maintenance requirements Frequency annually annually annually annually 3 months annually 7.1 Drain Water Heater WARNING Scald hazard! · The water drained from the tank may be hot enough to present a SCALD HAZARD and should be directed to a suitable drain to prevent injury or damage. NOTICE Product damage! · When draining the water heater, make sure that the power source to the water heater is shut off before draining water. and completely fill with water before re-energizing. Drain a few quarts of water to flush out accumulated sediment after the first 6 months then annually thereafter. This will flush sediment deposits from the bottom of the heater and lengthen the heater's service life. Foreign material can wash in and unless the water supply is naturally soft (0 to 5 grains hardness), scale or lime deposits will accumulate in the tank. Hard water scale precipitates at an increasingly high rate in proportion to an increase in water temperature. Failure of the tank or heating elements due to accumulated deposits does not fall within the scope of the warranty. 1. Disconnect power from water heater. 2. Attach a hose to the drain valve and connect it to a drain or a bucket. 3. Close the cold water supply line shut-off valve. 4. Open drain valve. 5. Flush until water runs clear. 6. Open hot water faucet to let air escape. 7. Re-open cold water supply line shut-off valve. 8. Close hot water faucet once air has been bled from system. 9. Make sure the water heater is completely filled before re-energizing. Drain Valve Hose (field supplied) Utilize F02 and F03 settings to remind the user of maintenance. Figure 16 Draining the water heater 24 | Bosch GreenTronic 7000 T Hybrid Electric Water Heater - BTC 755003301 C (06.2024) Installation and Operating Instructions 7.2 Test the T&P Valve WARNING Scald hazard! · The water drained from the tank may be hot enough to present a SCALD HAZARD and should be directed to a suitable drain to prevent injury or damage. Test the operation of the relief valve after filling and pressurizing the system and at least annually. 1. Place bucket underneath the discharge line of the T&P valve. 2. Lift the lever as shown in figure 17. 3. Make sure water discharges freely. 4. Close lever 5. Check for any leaks after closing the valve If the valve fails to operate correctly or leaks after closing, replace immediately. 7.3 Heating Elements WARNING Hazardous voltage! · Removal and replacement of the heating elements involves the disconnection of electrical wiring. These procedures must only be performed by a qualified service technician. The electric elements are mounted inside the tank to transfer heat directly into the water. These electric elements can become laden with lime and mineral deposits that reduce their effectiveness or cause them to overheat and short out. At least once a year check the heating elements and if they are coated with calcium, clean them using white vinegar and a stiff bristle brush. Make sure you have new gaskets available before servicing the elements. Temperature & Pressure Relief Valve Manual Relief Lever Discharge Line to Drain Figure 17 Testing the temperature & pressure-relief (T&P) valve Figure 18 Example heating element with mineral deposits To check or replace an element: 1. DISCONNECT POWER at the breaker to the water heater. 2. Drain tank, see 7.1 for further details. 3. Use 1 1/2" socket wrench to remove heating element. 4. Service element or replace. 5. Add new gasket when tightening the element, if needed. Do not overly tighten as this may break the gasket and creates leaks. 6. Open faucets to let air escape. 7. Fill the tank with water until water runs normally. 8. Check for leaks before turning on power. Bosch GreenTronic 7000 T Hybrid Electric Water Heater - BTC 755003301 C (06.2024) | 25 Installation and Operating Instructions 7.4 Anode Rod The anode rod is a sacrificial metal rod that avoids corrosion and premature failure (leaks) in the tank. It is a consumable item. The anode rod will need to be replaced before it is depleted. The water heater comes with a magnesium zinc anode rod. Inspect the anode rod after the first six months of operation when you drain and flush the tank. Replace the anode rod if it is partially depleted or substantially worn out (See Figure 19). Thereafter, inspect the anode rod annually or more frequently if needed. If you use a water softener, your anode rod will deplete faster than normal and as such would need more frequent inspection. Certain water conditions will cause a reaction between this rod and the water heater, potentially causing smelly water. The parts list includes an aluminum anode for such cases in which the water has a different odor or discoloration due to this reaction. A water conditioning company might have to be contacted to supply filtration equipment if the issue persists. Part Number Material 7738007479 Magnesium 7738007480 Magnesium Table 20 Anode rod part numbers Model TR7000T-50 TR7000T-80 7.5 Air Filter Clean air filter every three months, or more frequently if installed in an area with poor air quality, which is located on the top of the water heater (if not ducted). Simply push the little handle in the front to remove and rinse with water to clean it. Air Metal Filter Grille Push Handle Figure 20 Filter cleaning NOTICE Warranty exclusion! · Damages or malfunction caused by lack of anode rod maintenance is not covered by the warranty. New Anode Rod Partially Depleted Anode Completely Depleted Anode Figure 19 Anode rod examples To inspect or replace the anode rod: 1. Shut off water heater 2. Close cold water line and drain a few gallons of water through the faucet or hot water line to remove water pressure in the tank. 3. Remove the head cover of the water heater by unscrewing 6 phillips head srews 4. Locate white anode rod cap and remove it 5. Take 1 1/8" socket head with a 18 inch extension to unscrew anode rod 6. Check and/or replace anode rod and screw back in 7. Fill water heater by opening the cold water line again 8. Check for leaks before mounting the head cover and powering the unit 26 | Bosch GreenTronic 7000 T Hybrid Electric Water Heater - BTC 755003301 C (06.2024) Installation and Operating Instructions 8 Troubleshooting Problem Possible Cause No power to the water heater Corrective Action 1. Check for tripped breaker, restore power 2. Check voltage at terminal block (~208-240V) No power to the display Display is not powered 1. Check connection on main board to display 2. Check if display connection has power 3. If power from mainboard connection is available, replace display board TCO tripped Board failure No power 1. Understand cause of TCO activation 2. Reset TCO Replace failed board 1. Check for tripped breaker, restore power 2. Check voltage at terminal block (~208-240V) 3. Check if display has power, if not see above No hot water Vacation mode is active Error Code 1. Check operation mode on display for VACATION 2. Change to desired mode 1. Error code is displayed 2.Check error code table and follow corrective actions Water heater has not recovered Plumbing Issues Wrong operation mode selected Setpoint temperature too low Running out of hot water Demand response is active Water heater is undersized Temperature too high Water pressure too low Setpoint temperature too high Plumbing Issues Plumbing Issues Smelly water Water quality issue (e.g. excessive sulfate) 1. Check current temperature on display 2. Change operation to mode with higher recovery rate, refer to section "Selecting Operation Mode" Check for plumbing issues (e.g. crossover, bad mixing valve, etc.) Select mode with higher recovery rate Raise setpoint, refer to section "Water Temperature Setting" Check if DR is activated, refer to section "Demand Response" 1. Stagger hot water usage 2. Check with your installer Lower setpoint Check for plumbing issues (e.g. crossover, bad mixing valve, etc.) Check for plumbing issues (e.g. closed cold water supply valve) Consider using an alumnium anode rod (part number: 7738007481 for 50 Gallon, 7738007482 for 80 Gallon) Leak from drain valve 1. Verify drain valve is fully closed 2. Replace if it still leaks Water in drain pan Leak from water connections or condensate drain 1. Check for leaks 2. Tighten connections 3. Replace if necessary Table 21 Leak from T&P valve Leak from tank 1. Check for leak at T&P valve 2. Replace T&P valve Inspect tank for leakage, and replace whole unit if necessary Bosch GreenTronic 7000 T Hybrid Electric Water Heater - BTC 755003301 C (06.2024) | 27 Installation and Operating Instructions 8.1 Error code table An active error code will be shown in the display as the table indicates below. Recent error codes which have been cleared will be shown in the operating parameters (Chapter 6.5.1.: 1Er, 2Er, 3Er) with an history reference number not the actual error code designation. Please refer to below table to reference back to the original error code. Error Code EC52 History Reference Description Number 8 Temperature sensor T3 not detected Result Water heater will operate by using electric heating elements only. EC53 7 Temperature sensor T4 not detected Water heater will operate by using electric heating elements only. EC54 5 Temperature sensor TP not detected Water heater will operate by using electric heating elements only. EH00 2 Heat pump failure Water heater cannot operate EH03 3 Fan error Water heater cannot operate EH0b 1 Display communication failure to board Water heater cannot operate EH5d EH5H EH5L EH5U EHHP FC06 11 Heating elements open circuit Water heater will operate by utilizing heat pump 6 Temperature sensor TH not detected Water heater will operate by using electric heating elements only. 9 Temperature sensor T5L not detected Water heater will operate by utilizing heat pump 10 Temperature sensor T5U not detected Water heater will operate by utilizing heat pump 12 Heat pump system fault (Activates when PH20, PH21, PC30, PC06 appears 3 times in a row or at least one error code lasts longer than 1 hour) Water heater will operate by using electric heating elements only. 23 Auto shut-off valve not detected Water heater can operate normally PC06 PC30 PH15 19 High temperature at TP (TP > 230°F /110°C) Water heater will operate by using electric heating elements only. High refrigerant pressure detected 18 > 435 PSI when compressor on > 350 PSI when compressor off Water heater will operate by using electric heating elements only. 4 Electric leakage detected Water heater cannot operate PH20 14 Compressor is not able to heat up refrigerant Water heater will operate by using electric heating elements only. PH21 15 Compressor working current too large PH22 PH24 16 Leak sensor activated 17 T5L < 39°F/4°C and T4 < 45°F /9°C: Frost Protection active PH91 22 Evaporator temperature too low PH9b PHdH 20 Water temperature exceeds set point by 9°F (5°C) 13 Dry burning protection is running PHL1 21 Water detected in condensate tray Table 22 Water heater will operate by using electric heating elements only. Water heater can operate normally Water heater will operate by using electric heating elements only. Water heater will operate by using electric heating elements only. Water heater cannot operate Water heater cannot operate Water heater will operate by using electric heating elements only. Corrective Action 1. Check connector CN28 to main board 2. Check resistance, refer to chart "Electric Resistance Specifications" 1. Check connector CN28 to main board 2. Check resistance, refer to chart "Electric Resistance Specifications" 1. Check connector CN28 to main board 2. Check resistance, refer to chart "Electric Resistance Specifications" Call technician 1. Check if fan can move freely 2. Inspect wire for damage 3. Check connector CN12 to main board 1. Verifiy display connector CN53 on main board 2. Re-energize unit 1. Verify wire connections 2. Check for resistance for elements (12.8 Ohms at 240 V) 3. Replace heating element 1. Check connector CN29 to main board 2. Check resistance, refer to chart "Electric Resistance Specifications" 1. Check connector CN24 to main board 2. Check resistance, refer to chart "Electric Resistance Specifications" 1. Check connector CN24 to main board 2. Check resistance, refer to chart "Electric Resistance Specifications" Call technician 1. Check if auto shut-off valve is installed 2. If not installed, make sure F38 is 0 3. Replace faulty auto shut-off valve Clears when TP < 194°F/90°C: if error repeats, call technician Call technician 1. Disconnect from power immediately 2. Call service technician 1. Check if sensor are properly mounted 2. Check temperature delta on the refrigerant line 3. Call technician 1. Power off unit and wait 1 hour before re-energizing 2. If error persists, call technician Check for leaks and fix leaking part Frost protection deactives automatically. If inlet air is ducted, consider taking indoor air 1. Check temperature sensor T3 (connections and resistance) 1. Check resistance of temperature sensor T5U 2. Replace if out of specification Make sure water is in the tank by opening hot water faucet Check if condensate drain is blocked 28 | Bosch GreenTronic 7000 T Hybrid Electric Water Heater - BTC 755003301 C (06.2024) Installation and Operating Instructions 8.2 Thermal Cutout The water heater is equipped with a thermal cutout (TCO) that is located above the upper heating element in contact with the tank surface. If for any reason the water temperature becomes excessively high, the TCO breaks the power circuit to the water heater. Once the TCO activates, it must be reset manually. WARNING Personal injury, product damage, property damage, improper operation! · Resetting TCO - The cause of the high temperature condition must be investigated by a qualified service technician and corrective action must be taken before placing the water heater in service again. To reset the TCO (Refer to Figure 20): 1. Disconnect all power to unit. 2. Remove the upper heating element cover and insulation. 3. Press the button to reset, refer to below picture. 4. Put back the insulation and screw on upper heating element cover before turning on the power to the water heater. 8.3 Electric Resistance Specifications The water heater is equipped with multiple temperature sensors and heating elements that are based on resistance values. The Electric Resistance Specification table details the correct resistances for each heating element and temperature sensor. These resistances are measured without the component being wired. If the resistances vary from the specified values significantly at the specified temperature, it could be a sign that a replacement component is required. Contact a qualified technician for more information Part Resistance Specifications (±5%) Electric Heating Element 12.8 Ohm T3 10 kOhm (at 25°C) T4 10 kOhm (at 25°C) TP 5 kOhm (at 90°C) TH 10 kOhm (at 10°C) T5L 17.6 kOhm (at 50°C) T5U 17.6 kOhm (at 50°C) Table 23 Electrical resistance specifications Figure 21 Thermal cutout (TCO) location Bosch GreenTronic 7000 T Hybrid Electric Water Heater - BTC 755003301 C (06.2024) | 29 Installation and Operating Instructions 8.3 Electrical Diagram This guide recommends minimum branch circuit sizing and wire size based on National Electric Codes. To Water Tank (DC MOTOR) DC FAN 5 DC MOTOR 6 6 CN51 CN1 2 TH CN29 2 T3 Main control board Y/G CN18 PE CN28 CN24 2 2 2 2 T4 TP 2 2 T5U/T5L To Water Tank (T5U/T5L) CTA2045 CN50 TEST CN41 EEV White CN14 POWER IN CN38 Black CN36 CN37 CN10 CN53 3 2 2 To Water Tank (Water level Switch) 2 PRO_H 2 Water level Switch (Normally Closed) 4 4 Display 6 EEV CTA2045 CN17 CN19 DEBUG CN20 EEPROM Red Brown 3 4 RY1 Red Black Blue N HEAT1N Red RY5N 5A 5 FUSE Black P3P4 HEAT2N RY6N Blue Gray CN2 Alarm CN12 CN17 FAN-H *CT2 CT1 Black Black L1 L2 White White Brown Red Brown Relay board HEAT1L Red L RY5L P1P2 RY6L HEAT2L Gray Compressor Blue Red C S White R Blue Y/G Compressor Capacitor L1 1 2 T5U L2 3 ECO 4 UE Blue Brown Red T5L LE Red Gray White Green or Y/G Black L1 L2 208VAC 60Hz 240VAC 60Hz Water Tank Gray Figure 22 Electrical diagram Water Heater Wattage at 240V 5,500 Table 24 Phases 1 Recommended Over Current Protection (Fuse or Circuit Breaker) Amperage Rating 208 - 240V 30 Copper Wire Size AWG Based on N.E.C. Table 310-16 (75°C) 208 - 240V 10 30 | Bosch GreenTronic 7000 T Hybrid Electric Water Heater - BTC 755003301 C (06.2024) Online Help Resources Alternatively, please visit our Service & Support webpage to find FAQs, videos, service bulletins, and more; www.boschheatingcooling.com/service or use your cellphone to scan the code below. Installation and Operating Instructions Figure 23 Bosch GreenTronic 7000 T Hybrid Electric Water Heater - BTC 755003301 C (06.2024) | 31 Installation and Operating Instructions 9 Water Heater Components Filter Top Cover Air Inlet Air Outlet Upper Cover Compressor Evaporator Fan Assembly Condensate Outlet T&P Valve Hot Water Outlet Upper Electric Heating Element Lower Electric Heating Element Drain Valve Cold Water Inlet Figure 24 Water heater components Display Junction Box Junction Box Cover Electronic Control Box Anode Rod TCO Cover Cover Insulating Cover 32 | Bosch GreenTronic 7000 T Hybrid Electric Water Heater - BTC 755003301 C (06.2024) Notes: Installation and Operating Instructions Bosch GreenTronic 7000 T Hybrid Electric Water Heater - BTC 755003301 C (06.2024) | 33 Installation and Operating Instructions Notes: 34 | Bosch GreenTronic 7000 T Hybrid Electric Water Heater - BTC 755003301 C (06.2024) Notes: Installation and Operating Instructions Bosch GreenTronic 7000 T Hybrid Electric Water Heater - BTC 755003301 C (06.2024) | 35 United States and Canada Bosch Thermotechnology Corp. 65 Grove St. Watertown, MA 02472 Tel: 800-283-3787 www.bosch-homecomfort.us BTC 755003301 C / 06.2024 Bosch Thermotechnology Corp. reserves the right to make changes without notice due to continuing engineering and technological advances.
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