GSW 5065 manual If the, temperature, and pressure relief, valve, is dripping, or leaking, have a

							DO NOT use any lead based solder in potable water lines.
		FOLLOW THE
		TEMPERING					Use appropriate tin-antimony or other equivalent material.
					TEMPERED
		VALVE MANU-			WATER TO		DO NOT tamper with the gas control/thermostat, igniter,
		FACTURER'S			FIXTURE
	INSTRUCTIONS						flammable vapour sensor 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 chro-
		T&P VALVE
		AND DIS-					mates, boiler seal, or other chemicals.
		CHARGE
						TEMPERING	DO NOT add any chemicals to the system piping which will
		LINE
						VALVE (SET	contaminate the potable water supply.
						TO 49°C
				HOT
				WATER		(120°F))	Closed System/Thermal Expansion
				OUTLET
			COLD				Periodic discharge of the temperature and pressure relief
							valve may be due to thermal expansion in a closed water
			WATER
			INLET				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 caus-
	Figure 18 Tempering Valve Installation						ing pressure inside the water heater to increase. This may
							cause the temperature and pressure relief valve to dis-
5. Install a shut-off valve in the cold water inlet line. It							charge small quantities of hot water. To prevent this, it is
		should be located close to the water heater and be eas-					recommended that a diaphragm-type expansion tank (suit-
		ily accessible. The owner/operator must be shown the					able for potable water) be installed on the cold water supply
		location of this valve and be given instructions on how					line. The expansion tank must have a minimum capacity of
		to use it to shut off the water to the heater.					5.6 litres (1.5 US gallons) for every 190 litres (50 US gal-
							lons) of stored water and be rated at the working pressure
Filling the Water Heater							of the water heater. Contact the local water supplier or
Do not insert the power cord into the electrical receptacle							plumbing inspector for information on other methods to con-
until all the following steps have been completed.							trol this situation.
1. Make sure the drain valve is closed.							Important: Do not plug or remove the temperature and
2. Open all hot water faucets served by the system to							pressure relief valve.
		allow air to escape from the tank.					Temperature and Pressure (T&P) Relief Valve
3. Open the cold water inlet valve.
NOTE: When filling, avoid water leakage. Do not allow the							For protection against excessive pressures and tempera-
insulation of the water heater to get wet as water can reduce							tures, a temperature and pressure relief valve must be
the effectiveness of the insulation.							installed in the opening marked “T&P RELIEF VALVE” (see
4. When an uninterrupted stream of water, without appar-							Figure 19). This valve must be design certified by a nation-
		ent air bubbles, flows from the open hot water faucets,					ally recognized testing laboratory that maintains periodic
		the tank is full.					inspection of the production of listed equipment or materials
5. Close the hot water faucets and check the system for							as meeting the requirements of the “Standard For Relief
		leaks. Repair as required and retest.					Valves For Hot Water Supply Systems”, ANSI
6. Connect a hose to the drain valve and route to a suit-							Z21.22/CSA 4.4”. The function of the temperature and pres-
		able drain.					sure relief valve is to discharge water in large quantities in
7. Open the drain valve and let water run to flush out any							the event of excessive temperature or pressure developing
		foreign matter that may have entered the system.
								WARNING
		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:			Explosion Hazard
DO NOT install this water heater with iron piping. The sys-	•	If the	temperature	and pressure relief
tem should be installed only with piping that is suitable for		valve	is dripping	or leaking, have a
potable (drinkable) water such as copper, CPVC or poly-
		licensed plumber repair it.
butylene. DO NOT use PVC water piping.	•
DO NOT use any pumps, valves, or fittings that are not		Do not plug valve.
compatible with potable water.	•	Do not remove valve.
DO NOT use valves that may cause excessive restriction to	•	Failure	to follow these instructions can
water flow. Use full flow ball or gate valves only.		result in death or an explosion.
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