Service manual

— Page 39 —
© January 2013 Aqua-Hot
®
600-D01 Series Hydronic Heating System Service Manual - Rev. A
D.
Using an amp-meter, verify that amps are present at
the element’s wires.
120VAC 2000 Watt = Approximately 17 amps
240VAC 4500 Watt = Approximately 17 amps
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 Motor Home’s incoming A.C.
wires from the Aqua Hot’s AC wires.
d. Check the wires for the Left Electric Heating
Element for Continuity.
4.
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 proper ohm reading
120 VAC 2000 Watt = 8 - 9 ohms
240 VAC 4500 Watt = 12.5 - 13 ohms
If no continuity exists 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
. Follow the instructions for detaching the diesel burner in
section 8.
4.
Remove the Electric Element access cover.
5.
Remove the two wires secured to the defective electric
heating element by releasing the screw terminals.
6.
Using a 1-1/2 inch socket, remove the defective electric
heating element from the Aqua-Hot’s boiler tank.
7.
Install the replacement 2000/4500-watt electric heating
element into the boiler tank ensuring that the “up” letter-
ing on the element is installed in the up position.
8.
Connect the wires removed from the defective electric
heating element to the replacement electric heating ele-
ment and tighten the screw terminals.
9.
Reinstall the Electric Element access cover.
10
. Follow the Directions for reattaching the diesel burner in
section 8.
11.
Refill the Aqua-Hot’s boiler tank with the antifreeze and
water heating solution.
NOTE: The Aqua Hot 600 will have 120 VAC present at
the wires for the left electric element, while the Aqua-hot
675 will have 240 VAC present at the wires for the left
electric element.
SECTION 4: AQUA-HOT COMPONENTS