Carrier 38QRA - Manual

HEATING & COOLING
38QRA
Heat Pumps—Outdoor Section
Installation and Start-Up Instructions
NOTE: Read entire instruction before beginning installation.
SAFETY CONSIDERATIONS
Improper installation, adjustment, alteration, service, maintenance,
or use can cause explosion, fire, electrical shock or other condi­
tions which may cause personal injury or property damage.
Consult a qualified installer, service agency, or your distributor or
branch for information or assistance. The qualified installer or
agency must use factory-authorized kits or accessories when
modifying this product. Refer to the individual instructions pack­
aged with the kits or accessories when installing.
Follow all safety codes. Wear safety glasses and work gloves. Use
quenching cloth for brazing operations. Have fire extinguisher
available. Read these instructions thoroughly and follow all
warning or cautions attached to the unit. Consult local building
codes and National Electrical Code (NEC) for special require­
ments.
It is important to recognize safety information. This is the
safety-alert symbol ^ . When you see this symbol on the unit and
in instructions or manuals, be alert to the potential for personal
injury.
Understand the signal word— DANGER, WARNING, or CAU­
TION. These words are used with the safety- alert symbol.
DANGER identifies the most serious hazards which will result in
severe personal injury or death. WARNING signifies hazards that
could result in personal injury or death. CAUTION is used to
identify unsafe practices, which would result in minor personal
injury or product and property damage.
À WARNING
Before installation or servicing system, always turn off main
power to system. There may be more than one disconnect
switch. Turn off accessory heater power if applicable. Elec­
trical shock can cause personal injury or death.
INSTALLATION
Step 1—Check Equipment
Unpack unit and move to final location. Remove carton taking care
not to damage unit.
Inspect equipment for damage prior to installation. File claim with
shipping company if shipment is damaged or incomplete. Locate
rating plate on unit. It contains information needed to properly
install unit. Check rating plate to be sure unit matches job
specifications.
Step 2—Install on a Solid, Level Mounting Pad
If conditions or local codes require the unit be attached to pad,
tiedown bolts should be used and fastened through mounting feet
provided in unit base. Refer to unit mounting pattern to determine
base size and knockout hole locations. (See Fig. 2.)
Allow sufficient space for airflow clearance, wiring, refrigerant
piping and servicing of unit. Locate unit so condenser airflow is
unrestricted on both sides. A minimum 6-in. (152mm) clearance
above and 6 ft (1.83m) between units must be maintained. (See
Fig. 2.)
Й 1
Fig. 1—Model 38QRA
A90280
be mounted on a level pad directly on base legs or
g m>mt( ШОП accessory snow stand at support points. See Fig. 2 and
4^^Р^ВДег of gravity. Position unit so water or ice from roof
i^aqjpt drop directly onto unit.
levate Unit
: drainage the heat pump must be raised off the mounting
surface? Use accessory snow rack or ice stand where prolonged
subfreezing temperatures or heavy snow occur. Refer to separate
installation instructions packaged with these accessories.
In rooftop applications, locate unit at least 6 in. (152mm) above
roof surface on a level platform or frame. Place unit above a load-
bearing wall and isolate unit and tubing set from structure. Arrange
supporting members to adequately support unit and minimize
transmission of vibration to building. Consult local codes govern­
ing rooftop applications.
RIGGING
When lifting unit for rooftop mounting, keep unit upright. Lift unit
using a sling. Use cardboard or padding under sling, and spreader
bars to prevent sling damage to unit. (See Fig. 4.) See Figs. 2 and
4 for center of gravity reference. Install unit so that coil does not
face into prevailing winds. If this cannot be done, and constant
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obiigations.
Book 1 4
Tab 5a 5a
PC 101 Catalog No. 533-858 Printed in U.S.A. Form 38QRA-1SI Pg 1 10-91 Replaces: New