Lochinvar TNR-I&S-02 service manual Water Connections, Instructions for Connections

TNR-I&S-02
Figure 3	Figure 6	Typical Four Water Heater Connection
Typical Front Inlet Connect with Storage Tank
		WATER CONNECTIONS
		WARNING
	Failure to install and maintain a new, listed temperature and pressure
	relief valve will release the manufacturer from any claim, which might
	result from excessive temperature and pressures.
	Hydrogen gas can be produced in an operating water heater that has
	not had water drawn from the tank for a long period of time (generally
	two weeks or more). HYDROGEN GAS IS EXTREMELY FLAMMABLE. To
	prevent the possibility of injury under these conditions, we recommend
Figure 4	the hot water faucet to be open for several minutes at the kitchen sink
	before you use any electrical appliance, which is connected to the hot
Typical Two Water Heater Connection
	water system. If hydrogen is present, there will be an unusual sound
	such as air escaping through the pipes as hot water begins to flow. Do
	not smoke or have open flame near the faucet at the time it is open.
	Keep clear of the combination temperature and pressure relief valve
	discharge line outlet. The discharge may be hot enough to cause scald
	injury. The water is under pressure and may splash.
		CAUTION
	If sweat fittings are to be used, DO NOT apply heat to the nipples in
	front or side of the water heater. Sweat the tubing to the adapter
	before fitting the adapter to the water connections. It is imperative
	that heat is not applied to the nipples containing a plastic liner.

Figure 5

Typical Three Water Heater Connection

INSTRUCTIONS FOR CONNECTIONS

1.BEFORE PROCEEDING WITH THE INSTALLATION, CLOSE THE MAIN WATER SUPPLY VALVE. After shutting off the main water supply, open a faucet to relieve the water line pressure to prevent any water from leaking out of the pipes while making the water connections to the water heater. The COLD water inlet and HOT water outlet are identified on the water heater. Make the proper plumbing connections between the water heater and the plumbing system to the house. Install a shut-off valve in the cold water supply line.

2.If this water heater is installed in a closed water supply system, such as the one having a back-flow preventer in the cold water supply, provisions must be made to control thermal expansion. DO NOT operate this water heater in a closed system without provisions for controlling thermal expansion. Warranties do not cover damages

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