Service manual

— Page 47 —
© January 2013 Aqua-Hot
®
600-D01 Series Hydronic Heating System Service Manual - Rev. A
6.
Snap the replacement electronic controller into the
mounting bracket.
7.
Ensure that the pin jumpers are properly configured for
an Aqua-Hot 600; reference information in this section
for proper pin-jumper configuration. Reference Figure
25.
8.
Install each terminal strip/plug back onto the electronic
controller and tighten the screws on the terminal strips/
plugs to secure them to the controller.
NOTE:
Check the terminal strips/plugs for loose wires and
tighten if loose.
9.
Connect the ground wire followed by the main 12 Volt-
DC power wire, then the secondary power wire (if appli-
cable) to the appropriate screw terminals on the replace-
ment electronic controller board. Reference Appendix A
for additional wiring information.
10.
Reinstall the faceplate onto the electronic controller and
secure with the four screws previously removed.
SECTION 5: ELECTRONIC CONTROLLER
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.
2.
Remove the faceplate from the electronic controller by
removing the four screws securing it to the mounting
bracket.
3.
Disconnect the positive, negative, and secondary power
(if applicable) wires from the electronic controller.
4.
Disconnect the four terminal strips/plugs from the elec-
tronic controller by loosening the screws on each strip/
plug and pulling each strip/plug away from the electron-
ic controller.
5.
Remove the electronic controller from the mounting
bracket by unsnapping each corner.
Proper Pin Jumper Configuration:
1.
Verify that the pin jumpers are configured as in the illus-
tration in this section. If the pin jumpers do not match
the illustration, the Aqua-Hot 600 will not function
properly.
2.
If the jumpers pins need to be reconfigured, simply tug
gently on the black cap covering the pins to pull the
black cap off.
3.
Reseat the cap on the pins appropriately as per the illus-
tration.
Figure 25