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Section 19. Checkout Procedures
19.1 Operational And Checkout Procedures
CHECKOUT PROCEDURE
After installation has been completed, it is recommended that the entire system be checked against the following list:
1. Be sure unit suspension (if used) is secure and that there
are no tools or loose debris in or around or on top of the
unit. .............................................................................. [ ]
2. Properly insulate suction lines and fittings. .................. [ ]
3. Properly secure and isolate all refrigerant lines. .......... [ ]
4. Verify that all electrical connections are tight. .............. [ ]
5. Check all duct outlets; they must be open and unrestrict-
ed. ................................................................................ [ ]
6. Check drain lines and be sure all joints are tight. ........ [ ]
7. Be sure the return air filter is installed. ......................... [ ]
8. Be sure that the correct airflow setting is used.
(Indoor Blower Motor). ................................................. [ ]
9. Operate complete system in each mode to
verify proper performance. Verify operation of supplemen-
tary electric heater. ....................................................... [ ]
Final phases of this installation are the unit Operational and Checkout Procedures. To obtain proper performance,
all units must be operated and charge adjustments made in accordance with procedures found in the Service
Facts of the Outdoor Unit.
Electric Heating
1. R-W contacts close on the comfort control sending
24VAC to the W terminal on the fan relay. 24VAC is
also sent to EHC to energize the heat relay.
2. R-G contacts close on the comfort control send-
ing 24VAC to the G terminal on the fan relay. (The
combination of 24VAC on terminals W and G on
the fan relay will close the high speed contacts of
the fan relay)
3. WJ contacts on the fan relay close providing an
interlock circuit to allow the electric heat relays to
operate.
The comfort control must be setup to control R-G con-
tacts with a call for electric heat. This closes the
interlock circuit and allows the heat relay circuit to
be energized.
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