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4 SS-PCB50
P
RODUCT
S
PECIFICATIONS
ELECTRICAL CONNECTIONS
Main power entrance location (with electric heat
installed)
Control wiring entrance location
Main power entrance location (without electric heat
installed)
Note: Single-point wiring is available at location #1
when heat kit is installed. See installation instructions
for heat kits.
1–
2–
3–
FIGURE 3. ELECTRICAL HEAT UNITS
MODEL B
PCB090-5 7⅞” (200 mm)
PCB120-5 23⅞” (606 mm)
PCB180-5 23⅞” (606 mm)
ELECTRIC HEAT AIR TEMPERATURE RISE @ NOMINAL VOLTAGE
Heater Model HKCB20 HKCB30 HKCB40
No. Stages 2 2 2
Output MBH (W) 67.5 (19.8) 101.3 (29.7) 135.0 (39.6)
CFM
&
(L/S)
2600 (1227) 24.2 (13.4) 36.2 (20.1) -
2800 (1320) 22.5 (12.5) 33.6 (18.7) -
3000 (1415) 21.0 (11.7) 31.4 (17.4) -
3200 (1510) 19.7 (10.9) 29.4 (16.3) 39.3 (21.8)
3400 (1605) 18.5 (10.3) 27.7 (15.4) 37.0 (20.6)
3600 (1700) 17.5 (9.7) 26.2 (14.6) 34.9 (19.4)
3800 (1793) 16.5 (9.2) 24.8 (13.8) 33.1 (18.4)
4000 (1888) 15.7 (8.7) 23.5 (13.1) 31.4 (17.4)
4200 (1982) 15.0 (8.3) 22.4 (12.4) 29.9 (16.6)
4400 (2076) 14.3 (7.9) 21.4 (11.9) 28.6 (15.9)
4600 (2171) 13.7 (7.6) 20.5 (11.4) 27.3 (15.2)
4800 (2265) 13.1 (7.3) 19.6 (10.9) 26.2 (14.6)
5000 (2360) 12.6 (7.0) 18.8 (10.4) 25.2 (14.0)
5200 (2454) 12.1 (6.7) 18.1 (10.1) 24.2 (13.4)
5400 (2548) 11.6 (6.4) 17.4 (9.7) 23.3 (12.9)
5600 (2643) 11.2 (6.2) 16.8 (9.3) 22.5 (12.5)
5800 (2737) 10.8 (6.0) 16.2 (9.0) 21.7 (12.1)
6000 (2832) 10.5 (5.8) 15.7 (8.7) 21.0 (11.7)
Notes:
1. Maximum air temperature rise of 40°F (22.2°C) must not be
exceeded.
2. See Electric Heater Availability table for various unit sizes.
3. Air temperature rise is for total heating capacity: Temperature rises
at other conditions may be calculated by using the formula:
Temperature Rise = Output Capacity - BTU/h
1.08 x ft³/min. Airfl ow
Note: Temperature rises must be calculated in other than nominal volt-
age conditions.
4. For altitudes over 2,000’, air temperature rise must be calculated
using the formula:
Temperature Rise = Output Capacity - BTU/h
14.4 x ft³/Min. Airfl ow x Specifi c Weight of Air
5. Operation at less than nominal voltages must be de-rated by the
following factors: 415 volt-0.75; 380 volt-0.63.
ELECTRIC HEAT
ELECTRIC HEATER AVAILABILITY
Unit Size HKCB20 HKCB30 HKCB40
7½XXX
10XXX
15XXX
NOMINAL VOLTAGE FOR HKCB
@ 480V @ 415V @ 380V
HKCB20-4 19.8 kW 14.9 kW 12.5 kW
HKCB30-4 29.7 kW 22.3 kW 18.7 kW
HKCB40-4 39.6 kW 29.7 kW 25.0 kW