Carrier 50SD Install And Operation Instructions page 8

UNIT SIZE
NOMINAL CAPACITY (ton)
OPERATING WEIGHT (lb.)
COMPRESSOR
REFRIGERANT (R-22)
Quantity (lb.)
REFRIGERANT METERING DEVICE
Orifice ID (in.)
CONDENSER COIL
Rows...Fins/in.
Face Area (sq. ft.)
CONDENSER FAN
Nominal Cfm
Diameter (in.)
Motor Hp (Rpm)
EVAPORATOR COIL
Rows...Fins/in.
Face Area (sq. ft.)
EVAPORATOR BLOWER
Nominal Airflow (Cfm)
Size (in.)
Motor Hp (RPM)
RETURN-AIR FILTERS (in.)*
Throwaway
*
Required filter sizes shown are based on the larger of the ARI (Air Conditioning and Refrigeration Institute) rated cooling airflow or the heating airflow velocity of 300
ft./min. for throwaway type. For permanent filters, follow filter manufacturer's recommendations for filter size based on allowable face velocity. Air filter pressure drop for
non-standard filters must not exceed 0.08 in. wg.
1" (25mm) MIN.
Fig. 7—Condensate Trap
require aluminum tape to prevent exposed fiberglass.
6. Cover both horizontal duct openings with the duct covers from
the accessory duct cover kit. Ensure opening is air-and
watertight.
7. After completing unit conversion, perform all safety checks
and power up unit.
NOTE: The design and installation of the duct system must be in
accordance with the standards of the NFPA for installation of
nonresidence-type air conditioning and ventilating systems, NFPA
90A or residence-type, NFPA 90B; and/or local codes and
ordinances.
Adhere to the following criteria when selecting, sizing, and
installing the duct system:
8. Units are shipped for side shot installation.
9. Select and size ductwork, supply-air registers, and return-air
grilles according to American Society of Heating, Refrigera-
tion and Air Conditioning Engineers (ASHRAE) recommen-
dations.
10. Use flexible transition between rigid ductwork and unit to
prevent transmission of vibration. The transition may be
screwed or bolted to duct flanges. Use suitable gaskets to
ensure weathertight and airtight seal.
11. All units must have field-supplied filters or accessory filter
rack installed in the return-air side of the unit. Recommended
sizes for filters are shown in Table 1.
Table 1—Physical Data—Unit 50SD
024 030
2 2-1/2
343 366
7.8 8.4
0.065 0.070
2...21 2...21
11.9 13.6
2700 2700
22 22
1/8 (825) 1/8 (825)
3...17 3...17
3.7 3.7
800 1000
10x10 10x10
1/3 (1050) 1/3 (1050)
20x24x1 20x24x1
12. Size all ductwork for maximum required airflow (either
TRAP
OUTLET
13. Adequately insulate and weatherproof all ductwork located
2" (50mm) MIN.
C99013
14. Flash, weatherproof, and vibration-isolate all openings in
8
036 042
3 3-1/2
433 460
Scroll
10.9 10.9
Accurater
0.080 0.088
2...21 2...21
15.5 19.4
2800 2800
22 22
1/8 (825) 1/8 (825)
3...17 3...17
4.7 4.7
1200 1400
11x10 11x10
1/2 (1000) 1/2 (1075)
24x36x1 24x36x1
heating or cooling) for unit being installed. Avoid abrupt duct
size increases or decreases or performance may be affected.
outdoors. Insulate ducts passing through unconditioned space,
and use vapor barrier in accordance with latest issue of Sheet
Metal and Air Conditioning Contractors National Association
(SMACNA) and Air Conditioning Contractors of America
(ACCA) minimum installation standards for heating and air
conditioning systems. Secure all ducts to building structure.
building structure in accordance with local codes and good
building practices.
SUPPLY
DUCT
OPENING
Fig. 8—Supply and Return Duct Opening
048 060
4 5
480 492
12.3 12.0
0.088 0.101
2...21 2...21
19.4 19.4
3300 3300
22 22
1/4 (1100) 1/4 (1100)
3...17 4...17
5.6 5.6
1600 1750
11x10 11x10
1/2 (1075) 1.0 (1040)
24x36x1 24x36x1
RETURN
DUCT
OPENING
C99011