Carrier 40RFAA07 - UNIT POSITIONING AND ISOLATION; TYPICAL UNIT POSITIONING

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Fig. 3 — Foam Block Location
Rated Indoor Airflow (cfm)
Tables 4-6 list the rated indoor airflow used for the AHRI (Air-
Conditioning, Heating, and Refrigeration Institute) efficiency rat-
ing for the units covered in this document.
Unit Positioning
The unit can be mounted on the floor for vertical application with
return air entering the face of the unit and supply air discharging
vertically through the top of the unit. The unit can also be applied
in a horizontal arrangement with return air entering horizontally
and the supply air discharging horizontally. When applying the
unit in a horizontal arrangement, ensure the condensate drain pan
is located at the bottom center of the unit for adequate condensate
disposal. See Fig. 4 for condensate connections for each unit
position.
Fig. 4 — Typical Unit Positioning
Typical positioning and alternate return air locations are shown in
Fig. 4. Alternate return air locations can be used by moving the
unit panel from the alternate return air location to the standard re-
turn air location. Refer to overhead suspension accessory drawing
(see Fig. 5) for preferred suspension technique. The unit needs
support underneath to prevent sagging.
Unit Isolation
Where extremely quiet operation is essential, install isolators be-
tween floor and base of unit, or between ceiling and top section of
unit.
Be sure that unit is level and adequately supported. Use channels
at front and sides of unit for reference points when leveling.
Fig. 5 — Preferred Suspension Technique
Table 4 — 38AUZ with 40RFA
MODEL NUMBER FULL LOAD AIRFLOW (CFM)
38AUZD/E07 — 40RFA*07 2400
38AUZD/E08 — 40RFA*08 3000
38AUZ*12 — 40RFA*12 4000
Table 5 — 38AUD with 40RFA
MODEL NUMBER FULL LOAD AIRFLOW (CFM)
38AUDT/U12 — 40RFA*12 4000
Table 6 — 38AUQ with 40RFQ
MODEL NUMBER FULL LOAD AIRFLOW (CFM)
38AUQD/E07 — 40RFQ*07 2400
38AUQM/N08 — 40RFQ*08 2625
38AUQD/E12 — 40RFQ*12 3000
TXV Coil
Remove Foam Block
LEGEND
TXV — Thermostatic Expansion Valve
IMPORTANT: Do NOT attempt to install unit with return air
entering top panel of unit. Condensate will not drain from unit.
IMPORTANT: Do not bury refrigerant piping underground.
LEGEND
Accessory Line
Alternate Air Intake and Discharge
Air Intake and Discharge
Plug
Plug
Condensate Drain
NOTE: Dimensions in [ ] are millimeters.
OVERHEAD SUSPENSION ACCESSORY
UNIT SIZES 07 - 12