2
MODEL/SERIAL NUMBER NOMENCLATURES
Table 1—Unit Sizes
Cooling Only
SYSTEM TONS
BTUh
VOLTAGE - PHASE
OUTDOOR MODEL
1.00
12,000
115-1
38MHRBC12AA1
1.00
12,000
208/230-1
38MHRBC12AA3
1.50
18,000
208/230-1
38MHRBC18AA3
2.00
24,000
208/230-1
38MHRBC24AA3
Heat Pump
1.00
12,000
115-1
38MHRBQ12AA1
0.75
9,000
208/230-1
38MHRBQ09AA3
1.00
12,000
208/230-1
38MHRBQ12AA3
1.50
18,000
208/230-1
38MHRBQ18AA3
2.00
24,000
208/230-1
38MHRBQ24AA3
B
R
09
MAJOR SERIES
UNIT TYPE
R
=
OUTDOOR UNIT
MAXIMUM NUMBER OF FAN COIL UNITS THAT
CAN BE CONNECTED TO THE OUTDOOR UNIT
A = 1:1
OUTDOOR UNIT
38
MH
3
Q
38
= OUTDOOR UNIT
MH
= MODEL
VOLTAGE
1
=115-1-60
3
= 208/230-1-60
SYSTEM TYPE
C
= COOLING ONLY
Q
= HEAT PUMP
NOMINAL CAPACITY
09
- 3/4 TON
12
- 1 TON
18
- 1-1/2 TONS
24
- 2 TONS
A
A
VARIATIONS
A
= STANDARD
01
18
Week of Manufacture
Year of Manufacture
10001
Sequential Serial Number
V
V = ALL MODELS
Use of the AHRI Certified
TM Mark indicates a
manufacturer’s
participation in the
program For verification
of certification for individual
products, go to
www.ahridirectory.org.
Summary of Contents for 38MHRB series
Page 7: ...7 DIMENSIONS OUTDOOR CONT Unit inch mm Fig 3 Size 24K...
Page 11: ...11 WIRING DIAGRAMS COOLING ONLY Fig 7 Wiring Diagram Size Cooling Only Size 12K 115V...
Page 12: ...12 WIRING DIAGRAMS COOLING ONLY CONTINUED Fig 8 Wiring Diagram Cooling Only Size 12K 230V...
Page 13: ...13 WIRING DIAGRAMS COOLING ONLY CONTINUED Fig 9 Wiring Diagram Cooling Only Sizes 18 24K...
Page 14: ...14 WIRING DIAGRAMS HEAT PUMP Fig 10 Wiring Diagram Heat Pump Size 12K 115V...
Page 15: ...15 WIRING DIAGRAMS HEAT PUMP CONTINUED Fig 11 Wiring Diagram Heat Pump Sizes 09 12 18 230V...
Page 16: ...16 WIRING DIAGRAMS HEAT PUMP CONTINUED Fig 12 Wiring Diagram Heat Pump Size 24 230V...
Page 37: ...37 DIAGNOSIS AND SOLUTION CONT Fig 36 P U Fig 37 P V...
Page 38: ...38 DIAGNOSIS AND SOLUTION CONT Fig 38 P W Fig 39 N U...
Page 39: ...39 DIAGNOSIS AND SOLUTION CONT Fig 40 N V Fig 41 N W...
