American Water Heater 318281-000 instruction manual Temperature Adjustment, Tank Sensor, Draining

TEMPERATURE SETTINGS

		HIGH LIMIT
		CONTROL
L1	L3
	RESET
	RESET
L2	L4
T1
T2	T4	ADJUSTABLE
THERM-O-DISC
		THERMOSTAT
		WITH
		HIGH LIMIT
150°F	90°F
(66°C)	(32°C)
125°F (52°C)
	Figure 7
TABLE 2:
	Time for 1st Degree		Time for Perma-
Water			nent Burns 2nd &
	Burn
Temperature °F			3rd Degree (Most
	(Less Severe Burns)
			Severe Burns)
110	(normal shower temp.)
116	(pain threshold)
116	35 minutes		45 minutes
122	1 minute		5 minutes
131	5 seconds		25 seconds
140	2 seconds		5 seconds
149	1 second		2 seconds
154	instantaneous		1 seconds

(U.S. Government Memorandum, C.P.S.C., Peter L.Armstrong, Sept. 15,1978)

TEMPERATURE ADJUSTMENT

To adjust the temperature setting:

1.Turn “OFF” the electrical power to the water heater, at the junction box.

HAZARD OF ELECTRICAL SHOCK! Failure to turn “OFF” electric power to the solar water heater will result in the possibility of DEATH, SERIOUS BODILY INJURY OR PROPERTY DAMAGE.

2. Take off the access panel and fold away the insulation.

3. Turn the water temperature dial clockwise ( ) to increase the temperature, or counterclockwise ( ) to decrease the temperature.

4.Fold the insulation back in place and replace the access panel.

5.Turn “ON” the power supply.

RESET

BUTTON

L1 L3

	RESET
	RESET
L2	L4
T1

Figure 8

A non-adjustable high temperature limit control operates before steam temperatures are reached. The high limit is in the same area as the upper thermostat and must be reset manually when it activates. BECAUSE THE HIGH LIMIT ACTIVATES ONLY WHEN ABNORMALLY HIGH WATER TEMPERATURES ARE PRESENT, IT IS IMPORTANT THAT A QUALIFIED SERVICE AGENT BE CONTACTED TO DETERMINE THE REASON FOR OPERATION BEFORE RESETTING.

TANK SENSOR

The surface mount tank sensor should be attached to the sensor stud behind the lower door by placing the hole in the sensor over the stud provided and securing in place with a nut. The end of the tank sensor shall be connected to the red wires in the opening with wire nuts (with no regard for polarity). The other ends of the red temperature sensor extension extend from the top of the tank and shall be connected to the controller in the tank sensor position.

DRAINING

It is recommended that the storage tank be drained and flushed every 6 months to remove sediment which may build up during operation. The water heater should be drained if being shut down during freezing temperatures. To drain the tank, perform the following steps:

1.Turn off power to the water heater.

2.Open a nearby hot water faucet until the water is no longer hot.

3.Close the cold water inlet valve.

4.Connect a hose to the drain valve and terminate it to an adequate drain or external to the building.

5.Open the water heater drain valve and allow all of the water to drain from the tank. Flush the tank with water as needed to remove sediment.

6.Close the drain valve, refill the tank, and restart the heater as directed in this manual.

If the water heater is going to be shut down for an ex- tended period, the drain valve should be left open.

IMPORTANT: Condensation may occur when refilling the tank and should not be confused with a tank leak.

If the solar water heater is to be shut off and exposed to freezing temperatures, it must be drained. Water, if left in the tank and allowed to freeze, will expand and damage the solar water heater.

1. Turn “OFF” the electrical supply to the solar water heater.

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