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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

Correction Factor =

Rated Voltage

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.

Brand	Rheem
Model	RHAL-FR18PJ
Category	Air Handlers
Language	English

Rheem RHAL-FR18PJ User Manual

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Rheem RHAL-FR18PJ Specifications

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