27
12.3 CALCULATING AIRFLOW CFM
• The formula for calculating airflow using temperature rise and heating BTUH for units
with electric resistance heat is:
Heating BTUH
CFM =
1.08 x Temp. Rise
12.4 CALCULATING CORRECTION FACTOR
• For correction of electric heat output (kW or BTUH) or temperature rise at voltages
other than rated voltage multiply by the following correction factor:
Applied Voltage
2
Correction Factor =
Rated Voltage
2
13.0 PRE-START CHECKLIST
14.0 MAINTENANCE
For continuing high performance, and to minimize possible equipment failure, it is essen-
tial that periodic maintenance be performed on this equipment. Consult your local dealer
as to the proper frequency of maintenance and the availability of a maintenance contract
IMPORTANT: Before performing any service or maintenance procedures, see the
“Safety Information” section at the front of this manual.
!
WARNING
Units with circuit breaker(s) meet requirements as a service disconnect switch,
however, if access is required to the line side (covered) of the circuit breaker,
this side of the breaker(s) will be energized with the breaker(s) de-energized.
Contact with the line side can cause electrical shock resulting in personal
injury or death.
PRE-START CHECKLIST
Is unit properly located, level, secure and service-
able?
Has auxiliary pan been provided under the unit with
separate drain? (Units installed above a finished
ceiling).
Is condensate line properly sized, run, trapped,
pitched and tested?
Is ductwork correctly sized, run, taped and insulat-
ed?
Have all cabinet openings and wiring been sealed
with caulking?
Is the filter clean, in place and of adequate size?
Is the wiring tight, correct and to the wiring diagram?
Is the unit properly grounded and protected (fused)?
Is the thermostat heat anticipator been set properly?
Is the unit circuit breaker(s) rotated properly “on” up
- “off” down?
Are the unit circuit breaker(s) line lug cover(s) in
place?
Are all access panels in place and secure?
❍
YES
❍
NO
❍
YES
❍
NO
❍
YES
❍
NO
❍
YES
❍
NO
❍
YES
❍
NO
❍
YES
❍
NO
❍
YES
❍
NO
❍
YES
❍
NO
❍
YES
❍
NO
❍
YES
❍
NO
❍
YES
❍
NO
❍
YES
❍
NO
Refer to outdoor unit installation instructions for system
start-up instructions and refrigerant charging instructions.
