Service manual

— Page 37 —
© January 2013 Aqua-Hot
®
600-D01 Series Hydronic Heating System Service Manual - Rev. A
SECTION 4: AQUA-HOT COMPONENTS
C.
Using an AC voltmeter, verify that 110 volts of AC
power are present at the wires for the Right Electric
Element. reference figure 20. If there is not 110
VAC present at the terminal block for the right elec-
tric element, there is a problem inside the motor
home.
D.
Using an amp-meter, verify that approximately 17
amps are present at the element’s wires.
E.
Check the electric element’s wires for continuity by
completing the following:
a.
Disconnect the motor home from shore power/
shut off generator.
b.
Disconnect the wires from the electric heating
element.
c.
Disconnect the wires Aqua Hot’s A.C. Wires
from the incoming Motor Home’s A.C. Wires.
d.
With the wires disconnected, check each indi-
vidual wire for continuity.
6.
Check the electric heating element for functionality by
completing the following:
A.
Disconnect all power supplies.
B.
Remove the Electric Element access cover.
C.
Remove all wires from the electric heating element.
D.
Using an ohmmeter, check the electric heating ele-
ment for the proper ohms reading: 8-9 ohms.
If the ohms reading is not within spec, follow the
instructions in this section to replace the electric
heating element.
Replacement Procedure:
FAILURE TO DISCONNECT ALL POWER SUPPLIES AND/OR
TO ALLOW THE HEATER TO COOL BEFORE SERVICING
COULD CAUSE SERIOUS DAMAGE OR PERSONAL INJURY.
1.
Ensure that the Aqua-Hot has been completely shut
down and that all power sources have been disconnect-
ed. Also, because this replacement procedure will in-
volve the boiler tank and the potential for hot coolant, be
sure the heater has adequately cooled.
2. Drain the antifreeze and water heating solution from the
Aqua-Hot’s boiler tank using the drain valve.
3.
Remove the Electric Element access cover.
4.
Remove the two wires secured to the defective electric
heating element by releasing the screw terminals.
5.
Using a 1-1/2 inch socket, remove the defective electric
heating element from the Aqua-Hot’s boiler tank.
6.
Install the replacement 2000-watt electric heating ele-
ment into the boiler tank ensuring that the “up” lettering
on the element is installed in the up position.
7.
Connect the wires removed from the defective electric
heating element to the replacement electric heating ele-
ment and tighten the screw terminals.
8.
Reinstall the Electric Element access cover.
9.
Refill the Aqua-Hot’s boiler tank with the antifreeze and
water heating solution.
Figure 18
Left Electric
Element Wires
Right Electric
Element Wires