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Table 1 -- Physical Data (cont)
UNIT 48TJ
FURNACE SECTION
Rollout Switch Cutout Temp (F)t
Burner Orifice Diameter (in....drill size)
Natural Gas
Thermostat Heat Anticipator Setting (amps)
208/230, 575 Stage 1
460 v
Gas Input
Stage 2
Stage 1
Stage 2
Stage 1
Stage 2
Efficiency (Steady State) (%)
Temperature Rise Range
Manifold Pressure (in. wg)
Natural Gas
Gas Valve Quantity
Field Gas Connection Size (in.-FPT)
HIGH-PRESSURE SWITCH (psig)
Cutout
Reset (Auto)
LOW-PRESSURE SWITCH (psig)
Cutout
Reset (Auto)
FREEZE PROTECTION THERMOSTAT (F)
Opens
Closes
OUTDOOR-AIR INLET SCREENS
Quantity...Size (in.)
016D/F O20D/F 024D/F 028D/F
190
0.1285-.30/0.136-.29
0.98
0.44
0.80
0.44
172,000/225,000
230,000/300,000
81
15-45/20-50
3.3
1
3/4
190
0.1285.-30/0.136-.29
0.98
0.44
0.80
0.44
206,000/270,000
275,000/360,000
81
15-45/20-50
3.3
1
3/4
190
0.1285.-30/0.136-.29
0.98
0.44
0.80
0.44
206,000/270,000
275,000/360,000
81
15-45/20-50
3.3
1
3/4
190
0.1285_.30/0.136...29
0.98
0.44
0.80
0.44
206,000/270,000
275,000/360,000
81
15-45/20-50
426
32O
27
44
3O-+5
45-+5
Cleanable
2...20 x 25 x 1
1...20 x 20 x 1
RETURN-AIR FILTERS Throwaway**
Quantity.,.Size (in.) 4_.20 x 20 x 2
4...16 x 20 x 2
POWER EXHAUST V2 Hp, 208/230-460 v Motor Direct Drive, Propeller-Fan (Factory-Wired for 460 v)
3.3
1
3/4
LEGEND
Bhp -- Brake Horsepower
TXV -- Thermostatic Expansion Valve
*Circuit 1 uses the lower portion of condenser coil and lower portion of evap-
orator coils; and Circuit 2 uses the upper portion of both coils.
tRollout switch is manual reset.
**The 48TJ028 units requires 2-in. industrial-grade filters capable of handling
face velocities of up to 625 ft/min (such as American Air Filter no. 5700 or
equivalent).
NOTE: The 48TJ016-028 units have a low-pressure switch (standard) located
on the suction side.