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40MBAB: Service Manual
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
2
MODEL NUMBER NOMENCLATURE
Table 1 — Unit Sizes
KBTUH
V-PH-HZ
ID MODEL NO.
18
208/230-1-60
40MBABQ18XB3
24
40MBABQ24XB3
30
40MBABQ30XB3
36
40MBABQ36XB3
36
40MBABQ36XA3
48
40MBABQ48XA3
60
40MBABQ60XA3
INDOOR UNIT
40
MB
A
Q
24
X
A
3
40 = INDOOR UNIT
MB = MODEL
VOLTAGE
3 = 208/230-1-60
INDOOR FAN COIL UNIT TYPE
A = AIR HANDLER
UNIT TYPE
Q = Heat Pump
MAXIMUM NUMBER OF FAN COIL UNITS
CONNECTED TO THE OUTDOOR UNIT
A = 1:1
NOMINAL CAPACITY
18 - 1 1/2 TON
24 - 2 TONS
30 - 2 1/2 TONS
36 - 3 TONS
48 - 4 TONS
60 - 5 TONS
A = Light Commercial
B = Non Light Commercial
B
MAJOR SERIES
21
22
10001
Week of Manufacture
Sequential Serial Number
V
V = ALL MODELS
Year of Manufacture
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manufacturer’s
participation in the
program For verification
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products, go to
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