Aqua-Hot AHE-100-02S-12 VDC Service Manual Page 21

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Page 21
© 2011 Aqua-Hot
®
AHE-100-02S Hydronic Heating System Service Manual—Rev. B
SECTION 5: AQUA-HOT COMPONENTS
Replacement Procedure:
(continued)
2.
Shut off both the return and the supply ball valves com-
ing out of the aqua hot’s boiler tank..
3.
Disconnect the interior heating zone line from the defec-
tive check valve..
4.
Unscrew the defective check valve from the Aqua-Hot’s
zone circulation pump.
5.
Install the replacement check valve onto the Aqua-Hot’s
zone circulation pump. The arrow on the check valve
must point away from the circulation pump.
6.
Reconnect the interior heating zone fitting and line to
the replacement check valve.
7.
Refill the Aqua-Hot boiler tank with the antifreeze and
water heating solution.
8.
Test for proper operation
Figure 13
NOTE: When the interior heating zone line is disconnected
from the check valve, approximately 2 quarts of antifreeze
will leak out of the interior heating zone line.
NOTE: The Aqua Hot zone circulation pump is not a self
priming pump. If the circulation pump gets an air pocket, it
will be necessary to bleed the air out of the zone circulation
pump. Reference appendix ? For the proper zone circulation
pump bleeding procedure.
Zone Ball
Valve
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