6
Table 1A — Physical Data (SI)
LEGEND
*Indoor coil fin material/outdoor coil fin material.
†Weight of 356-mm roof curb.
NOTE: The 50TFQ units have a loss-of-charge switch located in the
liquid line.
UNIT SIZE 50TFQ
008
009
012
NOMINAL CAPACITY (kW)
26.4
29.9
35.2
OPERATING WEIGHT (kg)
Unit
Al/Al*
426
438
460
Durablade Economizer
20
20
20
Roof Curb†
65
65
65
COMPRESSOR
Hermetic
Quantity
2
2
2
Oil (ml)
1331 ea
1597 ea
1597 ea
REFRIGERANT TYPE
R-22
Operating Charge (kg)
Circuit 1
2.67
3.60
3.45
Circuit 2
2.72
3.70
3.45
OUTDOOR COIL
Enhanced Copper Tubes, Aluminum Lanced Fins, Acutrol™ Feed Device
Rows...Fins/m
1...669
2...669
2...669
Total Face Area (sq m)
1.90
1.67
1.70
OUTDOOR FAN
Propeller Type
Nominal L/s
2880
2880
2880
Quantity...Diameter (mm)
2...559
2...559
2...559
Motor BkW...r/s
.19...15.5
.19...15.5
.19...15.5
Watts Input (Total)
500
500
500
INDOOR COIL
Enhanced Copper Tubes, Aluminum Double-Wavy Fins, Acutrol Feed Device
Rows...Fins/m
3...590
3...590
3...590
Total Face Area (sq m)
0.74
0.74
1.03
INDOOR FAN
Centrifugal Type
Quantity...Size (mm x mm)
1...381 x 381
1...381 x 381
1...381 x 381
Type Drive
Belt
Belt
Belt
Nominal L/s
1230
1415
1700
Motor kW
1.12
1.12
1.50
Maximum Continuous BkW
1.79
1.79
2.16
Motor Frame Size
56
56
56
Fan r/s Range
10.33-14.67
10.33-14.67
11.50-15.00
Motor Bearing Type
Ball
Ball
Ball
Maximum Allowable r/s
26.7
26.7
26.7
Motor Pulley Pitch Diameter Min/Max (mm)
61/86
61/86
86/112
Nominal Motor Shaft Diameter (mm)
16
16
16
Fan Pulley Pitch Diameter (mm)
140
140
140
Nominal Fan Shaft Diameter (mm)
25
25
25
Belt, Quantity...Type...Length (mm)
1...A...1219
1...A...1219
1...A...1295
Pulley Center Line Distance (mm)
406
406
495
Speed Change per Full Turn of
Moveable Pulley Flange (r/s)
.83
.83
.67
Moveable Pulley Maximum Full Turns
From Closed Position
5
5
5
Factory Setting
5
5
5
Factory Speed Setting (r/s)
10.33
10.33
11.50
Fan Shaft Diameter at Pulley (mm)
25
25
25
HIGH-PRESSURE SWITCH (kPa)
Standard Compressor Internal Relief (Differential)
3103 ± 345
Cutout
2951
Reset (Auto.)
2206
LOSS-OF-CHARGE (LOW-PRESSURE) SWITCH (kPa)
Cutout
48 ± 21
Reset (Auto.)
152 ± 48
FREEZE PROTECTION THERMOSTAT (C)
Opens
–1 ± 3
Closes
7 ± 3
OUTDOOR-AIR INLET SCREENS
Cleanable
Quantity...Size (mm)
1...508 x 635 x 25
1...406 x 635 x 25
RETURN-AIR FILTERS
Throwaway
Quantity...Size (mm)
4...406 x 558 x 51
4...406 x 508 x 51
4...508 x 508 x 51
Al
—
Aluminum
BkW —
Brake Kilowatt
