Aqua-Hot AHE-100-02S, Руководство по обслуживанию

Страница: 26 / 106

— Page 26 —
© 2011 Aqua-Hot
®
AHE-100-02S Hydronic Heating System Service Manual—Rev. B
S
ECTION
5: A
QUA
-H
OT
C
OMPONENTS
Stir Pump / Circulation Pump B:
The stir pump circulates the antifreeze and water heating
solution within the Aqua-Hot boiler tank in order to ensure
even-heating of the solution. To accomplish this, the stir
pump draws the solution from the supply port of the tank and
deposits it back into the return port of the tank, after circula-
tion through heating loop number 2.
Troubleshoot the stir pump if the following condition has
occurred:

There is a lack of hot domestic water.

The Stir Pump does not operate when the diesel burner
is running.
Troubleshooting:
1. 1.
Verify that the Diesel Burner motor is running.
2. If the diesel burner motor is running and the stir pump
still is not operating:
A. Locate the Diode Wire which runs from the diesel
burner Controller C-2 pin, and hooks up to the B-
Zone Relay Pin 6 terminal.
i. Verify the Diode Wire is connected and the
screw for Pin 6 on the B-Zone relay is tight.
If diesel burner motor is running, and no voltage is
present at Pin 6 on the B-Zone Relay replace the
diode wire. If voltage is present at Pin 6 on the B-
Zone Relay continue.
C. Using a Volt Meter check the #2 zone pump for
voltage.
If voltage is present and the pump still fails to oper-
ate follow the circulation pump replacement proce-
dure in this book.
3.
If it is determined that the pump is active, verify that the
pump is operating properly by checking both connected
hoses for heat.
If both hoses are hot, the pump is working properly.
If one hose is hot, or neither hose is hot, check the
the heating loop for a blockage (i.e. stuck check
valve, kinked line). If no blockage exists, follow
the instructions in this section to replace the Zone
pump #2.
Figure 16
NOTE:
In order for the stir pump to operate, the diesel-
burner motor must be running.
Stir Pump/
Circulation
pump B