Electrical Characteristics - Westinghouse WHM24DMA21S Design & Technical Manual

6. Electrical characteristics

If you use the optional heater kit, make sure if it is suitable for the 3-way installation of the AHU.
Air Heater kit Electric
handler model heat
model name (kW)
2105340
24K 2105342 7.5
2105343 10
2105340
2105342 7.5
36K
2105343 10
2105344 15
2105340
2105342 7.5
48K, 60K 2105343 10
2105344 15
2105345 20
• ●: available
• —: unavailable
NOTES:
• As the wire size and circuit breaker regulations differ in each country or region, select appropri-
ate devices comply with the regional standard.
• Fan speed selection:
– 2: Medium-low
– 3: Medium
– 4: Medium-high
– 5: High
• Connect the heater kit to the power supply separately.
• Ampacities for MCA*
• Heat pump systems require specified airflow. Each ton of cooling requires between 350 and 450
CFM/Ton, or 400 CFM/Ton usually.
*1: Minimum Circuit Ampacity (Calculation based on UL60335-2-40)
*2: Maximum Circuit Breaker
1
MCA* (A)
AC 230 V AC 208 V
5 28.3
40.7
53.2
5 29.8
42.2
54.7
42.2 + 36.9 38.6 + 33.8
5 31.8
44.8
56.7
44.8 + 36.9 40.7 + 33.8
56.7 + 49.9 51.9 + 45.2
1
and MAX. CKT. BKR*
MAX. CKT. BKR*
AC 230 V AC 208 V
25.9 30
37.2 45
48.5 60
27.4 30
38.7 45
49.9 60
45 + 40 40 + 35
29.4 35
40.7 45
51.9 60
50 + 40 50 + 35
60 + 50 60 + 50
2
include the blower motor.
- 17 -
2
Fan speed tap
(A)
2 3 4
30 ● ● ●
40 — ● ●
50 — — ●
30 ● ● ●
40 — ● ●
50 — — ●
— — —
30 ● ● ●
45 — ● ●
55 — — ●
— — ●
— — —
6. Electrical characteristics
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