Carrier 38AN - Manual (Page 9)

Table 5 — System Piston Guide and
Refrigerant Charges
UNIT INDOOR
PISTON
SIZE
OUTDOOR
PISTON
SIZE
REQUIRED
SYSTEM
CHARGE
(lb)* Indoor Outdoor
40QNB009 38AN009 Capillary Tube Capillary Tube 1.50
40QNB012 38AN012 Capillary Tube Capillary Tube 1.80
40QNE009 38BK009 32t 30t 1.50
40QNH012 38BK012 42t 42t 2.00
'Charge is based on 25 ft of interconnecting tubing. Charge may need
to be added for longer tubing runs or when used with certain fan
coiis. Check unit namepiate for required charge. This is a totai sys­
tem charge.
tNon-serviceabie Aeroquip piston.
POSSiBLE PIPiNG DIRECTIONS
PREPUNCHED HOLES
BOTTOM/REAR
PIPING
as" MAX (FOR COOLING ONLY AND
HEAT PUMP SYSTEMS)
UNIT
GROUND-LEVEL
INSTALLATION
ROOFTOP
INSTALLATION
Fig. 6 — Maximum System Line Lengths
Step 4 — Mount Outdoor Section
1. If outdoor section is to be installed at ground level, mount
on a solid, level support pad one in. longer and one in.
wider than the outdoor section dimensions.
2. Provide sufficient clearance for airflow, wiring, refriger­
ant piping, service and maintenance. Provide a minimum
clearance of 2 ft from obstructions in front of outdoor
section, 2 ft on outdoor coil side, and 2
’/2 ft on electrical
and piping side. If more than one outdoor section is in­
stalled, provide a minimum clearance of 2 ft between sec­
tions. Position outdoor section so that water or ice from
roof cannot fall directly on unit.
NOTE: The outdoor section can be installed higher than,
lower than, or level with the elevation of the indoor
section. If outdoor section is mounted higher than the in­
door section, the
vertical distance between the 2 units
should not exceed 30 ft. If the outdoor section is installed
lower than indoor section, the
vertical distance between
the units should not exceed 16 ft. See table below:
MAXIMUM DISTANCE BETWEEN OUTDOOR UNITS
Outdoor Section Higher 30 Ft Maximum
Than Indoor Section (Vertical)
Outdoor Section Lower 16 Ft Maximum
Than Indoor Section (Vertical)
NOTE: Maximum system piping length between indoor and outdoor
units is 35 ft.
Fig. 5 — Fan Coil Unit Refrigerant Piping
Fig. 7 — Fan Coil Unit Bracket Mounting (Size 009 Shown)