Electrical Resistance Heater Data - Carrier DesertMaster 50TJM Operation And Maintenance

Electric Resistance Heater Data - Table 4
HEATER kW
UNIT
Unit Voltages
50TJM
18
24
28
34
ACCESSORY HEATER PART NUMBER
UNIT
50TJM
Complete Kit P.N.
50TJ600287
18
50TJ601162
24
28
50TJ600730
34
Electric Heater Kits
Kit Ordering No
50TJ600287 Duct heater assembly, 50TJM 18 480 V
50TJ601162 Duct heater assembly, 50TJM 24 480 V
50TJ600730 Duct heater assembly, 50TJM 28 - 34 480 V
NOTE: Heaters are rated at 480 V. Use the Multiplication Factors table below to determine heater capacity for your particular voltage.
Multiplication Factors
Heater Actual Heater Voltage
Rating
380 400
Voltage
240 — —
480 0.62 0.7
NOTE: The following equation converts kW of heat energy to Btuh: kW x 3.413 = Btuh.
EXAMPLE: 30 kW (at 480 v) heater o
= 30.0 (0.7 multiplication factor)
= 21kW
Heater capacity(kW) is based on heater voltage of 380v or 480v. If power distribution voltage to unit varies from heater voltage, heater kW will vary
accordindly. To Detemine heater capacity at actual unit voltage, muptiply 480v capacity by multipliers found in table " Multiplication Factors" above.
MCA calculation for 50TJM 18 - 34 size units with electric heaters over 50 kW = (1.25 x IFM amps) + (1.00 x heater FLA).
460
28kW
37kW
400V
Casing P.N. Heater Element P. N.
( 1 Per Kit )
CPHEATER036A00
50TJ600289
CPHEATER037A00
50TJ600727
Description
480
—
1
HEATER FLA (PER STAGE)
Unit Voltages
460
17.3
23
( 2 Per Kit )
Stages Size (KW)
2 30
2 40
40
2
Page 12
MINIMUM HEATING
HEAT
HEATER
CFM
PER
STAGES
STAGES
Cfm
2 50/50 4800
2 50/50 6000
2 50/50 7000
2 50/50 7000
L/s
2265
2832
3304
3304