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Refilling after a leak in the system
The action that you take depends on where the leak occurs.
Leak in the water-supply circuit
If the leak occurs in the user-supplied secondary loop of the water-circulation
system, other than in the heat exchanger, repair the leak; then, complete the
following steps:
1. Reconnect the return and supply hoses, if they are disconnected:
2. Turn on the flow of water from the pump unit to the heat exchanger.
3. Perform the air-purging procedure to remove any air that enters the heat
Leak in the heat exchanger
Although a leak in the heat exchanger is unlikely, if it does occur, you must replace
the door assembly. To replace the door assembly, complete the following steps.
Note: Call for service to obtain a replacement heat exchanger. For service or
1. Drain the water from the heat exchanger. (See "Draining the heat exchanger" on
2. Have trained service personnel replace the door assembly.
3. Fill the replacement heat exchanger with water. (See "Filling the heat exchanger
60
Rear Door Heat eXchanger V2: Installation and Maintenance Guide
v To connect the supply hose, complete the following steps:
a. Align the male hose quick-connect coupling with the female
supply-manifold coupling.
Note: If you misalign the couplings, it is difficult to connect the hose.
b. Pull the female collar back and move the couplings toward each other.
c. Exert pressure until the female collar locks in place with an audible click.
Note: After the couplings are engaged but before the collar has locked
into place, you can let go of the collar and use both hands to push
the hose upward to lock the couplings.
v To connect the return hose, complete the following steps:
a. Align the female hose quick-connect coupling with the male
return-manifold coupling.
Note: If you misalign the couplings, it is difficult to connect the hose.
b. Pull the female collar back and move the couplings toward each other.
c. Exert pressure until the female collar locks in place with an audible click.
Note: After the couplings are engaged but before the collar has locked
into place, you can let go of the collar and use both hands to push
the hose upward to lock the couplings.
exchanger from the hoses. (See"Filling the heat exchanger with water" on page
48 for instructions.)
assistance information, see Appendix A, "Getting help and technical
assistance," on page 77.
page 56 for instructions.)
with water" on page 48 for instructions.)
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