User`s manual
Table 2--Physical Data--Unit 48GX (Continued)
UNiT BBZE 48G× 048090 048115 048130 0g0090 060115 060130
NOMINAL CAPACBTY (ton) 4 4 4 5 5 5
OPERATING WEIGHT (_b.) 421 421 421 468 468 468
COMPRESSORS Scrolt
Quantity 1
REFRmGERANT {R=22}
REFRIGERANT METERING OEVICE Acutrol Device
Orifice ID (in.) .034 .034 .034 .032 .032 .032
CONDENSER CORL
2...17 2._17 2._17 2...17 2_.17 2._17
Rows...Finstin.
12.3 12.3 12.3 16.4 16.4 16.4
Face Area {sq ft}
CONDENSER FAN
3300 3300 3300 3300 3300 3300
Nominal Cfm
22 22 22 22 22 22
Diameter (in.)
Motor Hp (Rpm) _A(1100) _¼(1100) _¼(1100) _A(1100) _A (1100) _A(1100)
EVAPORATOR COIL
4...15 4...15 4...15 4...15 4...15 4...15
Rows...Finslin.
4.7 4.7 4.7 4.7 4.7 4.7
Face Area {sq ft}
EVAPORATOR BLOWER
1600 1600 1600 1750 1750 1750
Nomina_ Airflow (Cfm} 11 X 10 11 X 10 11 X 10 11 X 10 11 X 10 11 X 10
Size ({n.} 3/4 (1075) 3/4 (1075) 3/4 (1075) 1.0 (I075) 1.0 (1075) 1.0 (1075)
Motor Bp (Rpm)
FURNACE SECTION*
Burner Orifice No. (Qty...DriH Size) 3._38 3...33 3...31 3...38 3_.33 3_.31
Natural Gas
3...46 3...42 3...41 3...46 3...42 3...41
Burner Orifice No. (Qty...Drill Size)
Propane Gas
RETURN-AIR FILTERS (in.)'( 24 X 30 24 X 30 24 X 30 24 X 30 24 X 30 24 X 30
Throwaway
Based on altitude of 0 to 2000 ft
1 Required filter sizes shown are based on the larger of the ARI (Air Conditioning and Refrigeration Institute) rated cooling airflow or the heating airflow velodty of 300
ft/minute for high-capacity type Air filter pressure drop for non-standard filters must not exceed 008 in. wg.
Table 3--Maximum Gas Flow Capacity*
NOMINAL
IRON PIPE,
SIZE
(IN.}
V2
%
1
11/4
iNTERNAL LENGTH OF PIPE, FT¢
DIAMETER
(BN.} 10 20 30 40 50 60 70 80 90 100 125 150 175 200
.622 175 120 97 82 73 66 61 57 53 50 44 40 -- --
.624 360 250 200 170 151 138 125 118 110 103 93 84 77 72
1.049 660 465 375 320 285 260 240 220 205 195 175 160 145 135
1.380 1400 950 770 600 580 530 490 460 430 400 360 325 300 280
1.610 2100 1460 1180 990 900 810 750 690 650 620 550 500 460 430
Capacity of pipe in cu ft of gas per hr for gas pressure of 0.5 psig or less. Pressure drop of 05-in wg (based on a 0.60 specific gravity gas). Refer to Tabte C-4, National
Fire Protection Association NFPA 54.
1 This length includes an ordinary number of fittings
l
Never use a match or other open flame when checking %r gas
leaks. Never purge gas line into combustion charuber. Failure
to follow this warning could result in an explosion causing
serious injury or death.
8. Check %r gas leaks at the field-installed and factow-installed
gas lines after all piping connections have been completed
Use soap-and-water solution (or method specified by local
codes and/or regulations)
Step g--INSTALL DUCT CONNECTmONS
The unit has duct flanges on the supply- and return-air openings on
the side and bottom o_["the unit, For downshot applications, the
ductwork connects to the roof cm'b (See Fig 2 and 3 for
connections sizes and locations)
10
CONFIGURING UNITS FOR DOV_q',rFLOW (VERTI(AL) DIS-
( HARGE
Be%re per%rming service or maintenance operations on the
system, mrn off main power to unit. Electrical shock could
cause serious injury or death.
1. Open all electrical disconnects be%re starting any service
work_
2. Remove return duct cover located on duct panel by breaking
connecting tabs with screw&iver and a hammer (See Fig. 10A
& 10B).
3. To remove supply duct cover, break flout and right side
connecting tabs with a screwdriver and a hammer. Push touver
down to break rear and left side tabs (See Fig. 10A & 10B)