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The belt-driven motor (single or
three phase) has a variable-pitch pulley
which adjusts at the jobsite to accom-
modate limited ranges of air quantities
and pressures.
All motors (single and three phase)
are UL listed, factory wired, single
speed with thermal overload protec-
tion and are continuous duty rated.
Motors are supplied with permanently
lubricated bearings, class-B insulation
and are open drip-proof. The motor
mount has an adjustable platform for
easy belt adjustment. The motor and
its mounting are independently isolated
from the cabinet and the blower. An
adjustable pitch pulley allows cfm bal-
ancing to meet system requirements.
Motor drive packages are provided
with keyed pulleys.
Complete factory assembly
minimizes on-the-jobsite costs
and problems
Compact, lightweight units are
designed for easy mounting. Knock-
3
outs designed to accept
ed rod are provided on the top and
bottom of each corner of the unit
One-in. duct flanges on discharge and
on return are furnished standard.
These integral duct flanges cut installa-
tion time and labor expense.
Durable construction means
easy-to-maintain units
The 42BHC casings are fabricated
from heavy-gage galvanized G90 steel,
reinforced for maximum rigidity and
structural strength. Removable side
panels with tool-less camlock latches
allow easy access for servicing interior
components.
Physical data
UNIT SIZE 42BHC
NOMINAL CFM
SHIPPING WT (lb) (no heat/ with heat)
FILTERS
Number...Size (in.)
Face Area (sq ft)
COILS
Size (in.)
Face Area (sq ft)
FANS
Number...Size (in.)
COPPER COIL CONN. 4, 6 AND 8 ROW (in.) (Cooling)
COPPER COIL CONN. 1 AND 2 ROW (in.) (Heating)
DRAIN CONN. SIZES (in.)
2
One-inch matte surface, fiberglass
thermal/acoustical insulation lines the
fan coil cabinets to prevent sweating
and to muffle sound transmission.
The stainless steel, double-sloped
condensate drain pan extends under
Table of contents
Features/Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1,2
Model Number Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Factory-Installed Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Selection Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-18
Typical Wiring Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19,20
Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Guide Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22,23
Model number nomenclature
/
-in. thread-
8
42BH - System Fan Coil Unit
Design
Size
Nominal
Cfm
-----------
08 - 800
12 - 1200
16 - 1600
20 - 2000
30 - 3000
40 - 4000
42BH
08
12
800
1200
205/246
256/300
1
1
1...16
/
x 24
1...18
/
x 33
2
4
2.8
4.2
15 x 20
15 x 29
2.0
3.0
1...9 x 6
1...10 x 7
7
7
/
OD
/
OD
8
8
5
5
/
OD
/
OD
8
8
3
3
/
MPT
/
MPT
4
4
full coil surface to cut maintenance
costs.
Slide-in return-duct collar filter
makes it possible to remove and
replace the filter without disturbing
return air ductwork.
C
08
L
NOTE: Refer to current 42 Series Mas-
ter Prices for complete model definition,
including motor, cfm and total static
pressure.
16
20
1600
2000
312/356
344/390
1
1
1
2...18
/
x 21
/
2...20
/
x 22
4
2
2
5.5
6.3
15 x 39
18 x 40
4.0
5.0
1...11 x 10
1...12 x 9
1
1
1
/
OD
1
/
OD
8
8
5
5
/
OD
/
OD
8
8
3
3
/
MPT
/
MPT
4
4
Page
Coil
Rows
---------------------
B - 4, 2-Pipe
L - 6, 2-Pipe
H - 4/1, Same End Conn.
K - 4/2, Same End Conn.
N - 6/1, Same End Conn.
Q - 6/2, Same End Conn.
R - 8, 2-Pipe
1 - 4 With Electric Heat
2 - 6 With Electric Heat
3 - 8 With Electric Heat
30
40
3000
4000
437/484
553/600
2...29 x 22
2...29 x 29
8.9
11.7
27 x 40
27 x 54
7.5
10.0
1...12 x 12
1...15 x 12
5
5
1
/
OD
1
/
OD
8
8
5
5
/
OD
/
OD
8
8
3
3
/
MPT
/
MPT
4
4
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