Atwood Mobile Products Water Heater Water Heater Exchanger User Manual

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13
Ground
Switch
Element
Fixed Thermostat
Manual Reset
High Temperature
Limit Switch
( 3 )-GREEN
( 1 )-BLACK
BLACK
( 2 )-WHITE
BLACK
Hot Lead
Ground Lead
Common Lead
Early model water heaters with 110 VAC heating
capacity used a bolt-on heating element and a one
piece thermostat/E.C.O..
This 110 VAC system has an adjustable rectangular
thermostat that is surface mounted to the inner tank
and retained by a steel clip. The temperature settings
are HI, MEDIUM, and LOW. If the thermostat is
making unobstructed contact with the aluminum tank
and it is set to the HI position, it should heat the water
to 130° F. It will take longer to heat a tank of water on
electric than gas.
The heating element was changed in 1996 from
1500W to 1400W bringing the amperage draw down
to 12.7 amps and allowing more cushion for the
15 amp circuit breaker that is normally placed in line.
This change adds a few minutes to the heating time.
There are 110 VAC aftermarket conversion kits being
offered by distributors in which the heating element is
screwed into the tank where the drain plug is located.
We do not offer such a kit. Our kit includes the tank
with the 110 VAC components already installed in it.
In the case where the 110VAC portion of the water
heater is not heating water, the following diagnostic
steps and repairs should be investigated:
Turn POWER OFF to the appliance before
removing junction box cover.
Perform the following steps with POWER ON to
water heater.
1. Verify switch-A is in ON position.
2. Insure there is 110VAC to the unit (measure
voltage across the black and white lead to the
appliance with POWER ON). If none, trace wiring
back and make appropriate wire repair.
Perform the following steps with POWER OFF to
water heater.
3. ECO Re-set Button-D should be depressed.
4. Check for continuity between screw-B and screw-
C of thermostat. If none, replace thermostat.
5. If water is insufficiently hot, check ECO /
Thermostat-E is on high.
6. Verify a good wire connection between thermostat
screw-C and heating element screw-G. Correct if
necessary.
7. There should be continuity between heating
element screw-G and screw-F. If none, element is
bad and should be replaced. Do not over-tighten
self-tapping screws when installing new element.
8. Check for continuity between element screw-G
and flange of element. If there is, element has
shorted. Element should be replaced.
9. Verify ground connection.
NOTE: Heating element can be operated on an empty
tank for a limited period of time before it self destructs.
BOLT-IN
Heating Element, Thermostat & ECO
110VAC Trouble-Shooting
Wiring Schematic
Temperature
Adjustment Dial
ECO
Re-Set
Button
UP

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