Assessments - 1, GPA: 3
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Contact a licensed plumber or the local plumbing authority. 4. If installing the water heater in a closed water system, install an expansion tank in the cold water line as specified under “Closed System/Thermal Expansion”. 5. Install a shut-off valve in the cold water inlet line. It should be located close to the water heater and be easily accessible. The owner/operator must be shown the location of this valve and be given instructions on how to use it to shut off the water to the heater. NOTE: Rear and Combination flue heaters are equipped with a combination cold water inlet/drain valve. AQUASTAT TEMPERATURE CONTROL T&P VALVE DRIP TUBE DRAIN VALVE HOT WATER OUTLET Figure 7 Plumbing Connections (Center Flue) 150 TO 305mm 6 TO 12” CENTER OF BLAST TUBE NON-COMBUSTIBLE FLOOR TOP NIPPLE COLD WATER BREECH SHUT-OFF CONNECTION Filling the Water Heater Do not insert the power cord into the electrical receptacle until all the following steps have been completed. 1. Make sure the drain valve is closed. 2. Open all hot water faucets served by the system to allow air to escape from the tank. 3. Open the cold water inlet valve. NOTE: When filling, avoid water leakage. Do not allow the insulation of the water heater to get wet as water can reduce the effectiveness of the insulation. 4. When an uninterrupted stream of water, without apparent air bubbles, flows from the open hot water faucets, the tank is full. 5. Close the hot water faucets and check the system for leaks. Repair as required and retest. 6. Connect a hose to the drain valve and route to a suitable drain. 7. Open the drain valve and let water run to flush out any foreign matter that may have entered the system. Continue flushing until clean water flows. 8. Close the drain valve, disconnect the hose, ensure the drain valve does not drip and re-fill the tank. Please note the following: DO NOT install this water heater with iron piping. The system should be installed only with piping that is suitable for potable (drinkable) water such as copper, CPVC or polybutylene. DO NOT use PVC water piping. COLD WATER SHUT-OFF AQUASTAT TEMPERATURE CONTROL T&P VALVE COLD INLET AND DRAIN VALVE COMBINATION HOT WATER OUTLET Figure 8 Plumbing Connections (Center/Rear Flue) 150 TO 305mm 6 TO 12” FLUE COLLAR CAPPED FOR REAR FLUE USE (OPTIONAL) VACUUM BREAKER CENTER OF BLAST TUBE NON-COMBUSTIBLE FLOOR – 12 – DO NOT use any pumps, valves, or fittings that are not compatible with potable water. DO NOT use valves that may cause excessive restriction to water flow. Use full flow ball or gate valves only. DO NOT use any lead based solder in potable water lines. Use appropriate tin-antimony or other equivalent material. DO NOT tamper with the aquastat, burner or temperature and pressure relief valve. Tampering voids all warranties. Only qualified service technicians should service these 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. Closed System/Thermal Expansion 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 pressure inside the water heater to increase. This may cause the temperature and pressure relief valve to discharge small quantities of hot water. To prevent this, it is recommended that a diaphragm-type expansion tank (suitable for potable water) be installed on the cold water supply line. The expansion tank must have a minimum capacity of 5.6 litres (1.5 US gallons) for every 190 litres (50 US gallons) of stored water and be rated at the working pressure of the water heater. Contact the local water supplier or plumbing inspector for information on other methods to control this situation. Important: Do not plug or remove the temperature and pressure relief valve. Temperature and Pressure (T&P) Relief Valve WARNING Explosion Hazard • If the temperature and pressure relief valve is dripping or leaking, have a licensed plumber repair it. • Do not plug valve. • Do not remove valve. • Failure to follow these instructions can result in death or an explosion. For protection against excessive pressures and temperatures, a temperature and pressure relief valve must be installed in the opening marked “T&P RELIEF VALVE”. This valve must be design certified by a nationally recognized testing laboratory that maintains periodic inspection of the production of listed equipment or materials as meeting the requirements of the “Standard For Relief Valves For Hot Water Supply Systems”, ANSI Z21.22/CSA 4.4”. The function of the temperature and pressure relief valve is to discharge water in large quantities in the event of excessive temperature or pr...
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