16
To purge the air from the system once your installation is
complete do the following steps:
(A)
Attach a hose to the air purge valve and run the hose to a
bucket or drain. This hose is a modified refrigeration
Schrader valve charging hose.
(B)
Close the isolation valves on the hot water supply and
return.
(D)
Open the hot water supply isolation valve and let the
water flow until all air is evacuated.
(E)
Open the hot water return isolation valve and let the
water flow until all air is evacuated.
(F)
All air is now purged from the system.
(G)
Remove the hose to close off the air purge valve and
replace the brass cap.
(H)
Open the hot water supply and return isolation valves to
allow water to flow through the system.
Note: it will often require purging several gallons of water so
either have a bucket available or an alternate means of discarding the
water.
4.
Switch the room thermostat to the “heat” position and raise the
temperature setting to a position approximately five to ten
degrees above the room temperature. Note: The door switch
must be activated to operate the unit. The pump will energize
and begin circulating hot water through the coil. If the pump is
operating properly and the water temperature in the water heater
has reached the set point, then the hot water inlet at the fan coil
unit will be approximately the same temperature as the water
heater setting. If the pump is running but the hot water is not
circulating, repeat step 3 (purging air out of system).
Содержание CAH 33-44-50
Страница 1: ...CAH SERIES INSTALLATION MAINTENANCE MODELS CAH 33 44 50 CAH 49 54 70 ...
Страница 10: ...10 Figure 3 Figure 4 Figure 3 Correct way to install duct work Figure 4 Incorrect way to install duct work ...
Страница 11: ...11 Typical Air Handler Schematic ...
Страница 23: ...23 WIRING DIAGRAMS ...