Carrier 38QRF018 - Installation; Complete Pre- -Installation Checks

2
INSTALLATION
!
WARNING
UNIT OPERATION AND SAFETY HAZARD
Failure to follow this warning could result in personal injury
or equipment damage.
Puron refrigerant systems operate at higher pressures than
standard R--22 systems. Do not use R --22 service
equipment or components on Puron refrigerant equipment.
PERSONAL INJURY AND EQUIPMENT DAMAGE
HAZARD
Failure to follow this caution may result in personal injury
and / or equipment damage.
DO NOT operate the unit without a filter or with grille
removed.
CAUTION
!
Complete Pre--Installation Checks
Unpack Unit
Move the unit to final location. Remove unit from carton,
being careful not to damage service valves and grilles.
Inspect Shipment
File a claim with the shipping company if shipment is damaged or
incomplete. Check the unit nameplates to ensure units match job
requirements.
Consider System Requirements
Consult local building codes and NEC for special installation
requirements.
Allow sufficient space for airflow clearance, wiring, refrigerant
piping, and servicing unit. See Fig. 3.
Locate unit so that condenser airflow is unrestricted on both sides.
Refer to Fig. 3.
Unit may be mounted on a level pad directly on base legs or
mounted on raised pads at support points. See Fig. 3 for center of
gravity.
Matching the Heat Pump to an Indoor Unit
The 38QRF018 --036 unit can be matched with either a 40QNQ
hi--wall unit or 40KMQ in--ceiling cassette unit. The 38QRF035
unit can only be matched with in--ceiling cassette indoor units. The
38QRF036 unit can only be matched with high wall indoor units.
Refer to separate indoor unit literature for more information
Check AccuRater Metering Device -- Heating Mode
The correct AccuRater (bypass type) refrigerant control is required
for system capacity optimization. An AccuRater device with
field--replaceable piston is supplied with the outdoor unit (see Fig.
2). Select the correct piston for the application from T able 1
(heating & cooling).
Metering devices located @ outdoor unit)
NOTE: Arrow on AccuRater body points in free flow direction, away from the
indoor coil.
A07884
Fig. 2 -- AccuRater (bypass type) Metering Device Components
38QRF