Air-handling equipment is designed to provide safe and
reliable service when operated within design specifications. To
avoid injury to personnel and damage to property or equipment, use good judgment and follow safe practices as outlined
below when installing and operating this equipment.
DANGER
NEVER REACH INTO a unit while the fan is running.
LOCK OPEN AND TAG the fan motor power disconnect
switch before working on unit. In addition, remove the
fuses and take them with you after noting this on tag.
DISCONNECT ALL POWER before attempting any
installation or service. More than one power source may be
supplied to a unit. Power to remote mounted control
devices may not be supplied through the unit.
CHECK THE WEIGHT of assembly and components to
be sure that rigging equipment can handle them safely.
NEVER PRESSURIZE a coil with a non-liquid for leak
testing. A dangerous burst may occur.
DO NOT STEAM CLEAN coils until you are sure all personnel are clear of the area.
Failure to follow these warnings will result in severe personal injury or death.
INTRODUCTION
The following contains general installation instructions for
the 42BHE,BVE fan coil units. See Fig. 1 for components. Refer to the unit wiring diagram installed on the blower housing
or specific manufacturer literature for any other type of factorymounted controls.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53420009-01Printed in U.S.A.Form 42B-4SIPg 111-13Replaces: 42B-3SI
See drawings for unit configurations, dimensions, clearanc-
WIDTH
E
2
K
J
TOP VIEW
SEE DETAIL 1
DEPTH
FILTER RACK WITH
TOOLLESS ACCESS
FROM SIDES AND
BOTTOM
HANGER ROD
KNOCKOUT Ø5/8
TYP 4 PLCS
1/2
1/2
DETAIL 1
SCALE 0.250
1-3/8
1" SUPPLY
AIR COLLAR
SUPPLY AIR
COIL DRAIN CONN.
[MALE 3/4-14 NPT]
[FEMALE 1/2-14 NPT
SECONDARY]
4 X 4 JBOX AND
MOTOR MOUNTED
SAME SIDE AS COIL
CONNECTIONS
SIDE VIEW
1
FRETURN AIR
1" RETURN
AIR COLLAR
COIL SUPPLY CONN.
COIL RETURN CONN.
4-3/8
ADD 2" FOR MERV11 FILTER
BOTH SIDE PANELS WITH
TOOLLESS CAMLOCK ACCESS
FRONT VIEW2-1/16
D
A
C
B
HEIGHT
NOTES:
1. All dimensions are in inches (±1/4 in.).
2. Any modifications to product specifications by any person are subject to acceptance of the factory. Product specifications are subject to
change without notice.
3. Right hand shown, left hand opposite.
4. Hanger rods, which are field-supplied, are shown for reference only.
5. Control box size and position may vary.
6. “C” dimension is measured from coil side of the unit.
UNIT
42BHE
DIMENSIONS (in.)
Fan SizeDepthWidthHeight
Supply DuctReturn DuctMounting Holes
AB CDEF J K
069 x 4362819
3
/
4
71/
8
101/
2
141/
2
21/424161/
2
271/
4
351/
4
089 x 63628193/
4
81/
2
101/
2
137/
8
21/424161/
2
271/
4
351/
4
1010 x 4371/
2
37211/
2
71/
8
115/
8
151/
4
21/433181/
4
361/
4
37
1210 x 737
1
/
2
37211/
2
10115/
8
137/
8
21/433181/
4
361/
4
37
1611 x 1037
3
/
4
47211/
2
133/
8
123/
4
163/
4
21/443181/
4
461/
4
37
2012 x 940
1
/
4
4824121/
2
133/
4
173/
4
21/444203/
4
471/
4
391/
2
3012 x 12401/
4
48321/
4
157/
8
133/
4
1671/44429471/
4
391/
2
4015 x 12431/
2
62321/
4
161/
2
161/
8
223/
4
61/45829613/
4
421/
2
Fig. 2 — Unit Dimensions — 42BHE Fan Coil Base Unit (No Controls)
es, and pipe connections. Refer to unit wiring label for all electrical connections. Follow NEC (National Electrical Code) and
local codes.
INSTALLATION
Step 1 — Unpack and Inspect Unit —
ping wraps from unit and check shipment against shipping list.
Check for concealed shipping damage. If shipment is damaged
or incomplete, file claim with transportation company and
contact your local Carrier representative immediately.
Remove ship-
Step 2 — Protect Unit from Damage — To main-
tain warranty, protect unit against adverse weather conditions,
theft or vandalism on the jobsite.
The described equipment IS NOT suitable for outdoor installations. The equipment should never be stored or installed
where it may be subjected to a hostile environment such as
rain, snow, or extreme temperatures.
Step 3 — Prepare Jobsite — To save time and to re-
duce the possibility of costly errors, set up a complete sample
installation in a typical room at jobsite. Check all critical dimensions such as pipe, wire and duct connection requirements.
Refer to job drawings and product dimension drawings as required. Instruct all trades in the appropriate part of the installation. For unit component identification, refer to Fig. 1. For unit
dimensions, refer to Fig. 2-4 for 42BHE units. Refer to Fig. 5-7
for 42BVE units.
2
WIDTH
NOTES:
1. All dimensions are in inches (±1/4 in.).
2. Any modifications to product specifications by any person are subject to acceptance of the factory. Product specifications are subject to
change without notice.
3. Right hand shown, left hand opposite.
4. Hanger rods, which are field-supplied, are shown for reference only.
5. Control box size and position may vary.
6. “C” dimension is measured from coil side of the unit.
UNIT
42BHE
DIMENSIONS (in.)
Fan SizeDepthWidthHeight
Supply DuctReturn DuctMounting Holes
AB CDEF J K
069 x 4362819
3
/
4
71/
8
101/
2
141/
2
21/
4
24161/
2
271/
4
351/
4
089 x 63628193/
4
81/
2
101/
2
137/
8
21/
4
24161/
2
271/
4
351/
4
1010 x 4371/
2
37211/
2
71/
8
115/
8
151/
4
21/
4
33181/
4
361/
4
37
1210 x 737
1
/
2
37211/
2
10115/
8
137/
8
21/
4
33181/
4
361/
4
37
1611 x 1037
3
/
4
47211/
2
133/
8
123/
4
163/
4
21/
4
43181/
4
461/
4
37
2012 x 940
1
/
4
4824121/
2
133/
4
173/
4
21/
4
44203/
4
471/
4
391/
2
3012 x 12401/
4
48321/
4
157/
8
133/
4
1671/
4
4429471/
4
391/
2
4015 x 12431/
2
62321/
4
163/
8
161/
8
223/
4
61/
4
5829613/
4
421/
2
a42-4241
Fig. 3 — Unit Dimensions — 42BHE Fan Coil Base Unit with Motor Control Option
E
2
FILTER RACK WITH
TOOLLESS ACCESS
FROM SIDES
AND BOTTOM
K
18
DOOR
OPEN
J
TOP VIEW
A
D
B
FRONT VIEW
DEPTH
8-11/16
SEE DETAIL 1
MOTOR CONTROLS AND MOTOR
MOUNTED SAME SIDE AS
COIL CONNECTIONS
C
HANGER ROD
KNOCKOUT Ø5/8
TYP 4 PLCS
1-3/8
1" SUPPLY
AIR COLLAR
HEIGHT
SUPPLY AIR
COIL DRAIN CONN.
[FEMALE 1/2-14 NPT SECONDARY]
[1MALE 3/4-14 NPT]
DETAIL 1
SCALE 0.250
1/2
1/2
SIDE VIEW
BOTH SIDE PANELS WITH
TOOLLESS CAMLOCK ACCESS
4-3/8
ADD 2" FOR MERV11 FILTER
COIL RETURN CONN.
F
COIL SUPPLY CONN.
1
RETURN AIR
1" RETURN
AIR COLLAR
3
WIDTH
E
K
9-11/16
1" SUPPLY
AIR COLLAR
J
TOP VIEW
2
FILTER RACK WITH TOOLLESS ACCESS
FROM SIDES AND BOTTOM
DEPTH
SEE DETAIL 1
20
DOOR OPEN
ELECTRIC HEAT AND MOTOR
MOUNTED SAME SIDE AS
COIL CONNECTIONS
1-3/8
HEIGHT
SUPPLY AIR
FRONT VIEW
A
C
13-3/4
HANGER ROD
KNOCKOUT Ø5/8
TYP 4 PLCS
1/2
1/2
DETAIL 1
SCALE 0.250
BOTH SIDE PANELS WITH
TOOLLESS CAMLOCK ACCESS
4-3/8
ADD 2" FOR MERV11 FILTER
COIL RETURN CONN.
COIL SUPPLY CONN.
SIDE VIEW
COIL DRAIN CONN.
[MALE 3/4-14 NPT]
[FEMALE 1/2-14 NPT SECONDARY]
1
1" RETURN
AIR COLLAR
RETURN AIR
D
B
NOTES:
1. All dimensions are in inches (±1/4 in.).
2. Any modifications to product specifications by any person are subject to acceptance of the factory. Product specifications are subject to
change without notice.
3. Right hand shown, left hand opposite.
4. Hanger rods, which are field-supplied, are shown for reference only.
5. “C” dimension is measured from coil side of the unit.
UNIT
42BHE
DIMENSIONS (in.)
Fan SizeDepthWidthHeight
Supply DuctReturn DuctMounting Holes
AB CDEF J K
069 x 4362819
3
/
4
87/
8
101/
2
141/
2
21/424161/
2
271/
4
351/
4
089 x 63628193/
4
87/
8
101/
2
137/
8
21/424161/
2
271/
4
351/
4
1010 x 4371/
2
37211/
2
103/8115/
8
151/
4
21/433181/
4
361/
4
37
1210 x 737
1
/
2
37211/
2
103/
8
115/
8
137/
8
21/433181/
4
361/
4
37
1611 x 1037
3
/
4
47211/
2
137/
8
123/
4
163/
4
21/433181/
4
461/
4
37
2012 x 940
1
/
4
482413133/
4
173/
4
21/444203/
4
471/
4
391/
2
3012 x 12401/
4
48321/
4
161/
4
133/
4
1671/44429471/
4
391/
2
4015 x 12431/
2
62321/
4
163/
4
161/
8
223/
4
61/45829613/
4
421/
2
Fig. 4 — Unit Dimensions — 42BHE Fan Coil Base Unit with Electric Heat Option
A42-661EF
4
C
A
7-7/16
TOP VIEW
2-1/16
B
4 X 4 JBOX AND MOTOR
MOUNTED SAME SIDE AS
COIL CONNECTIONS
DEPTH
1-7/16
1" SUPPLY AIR
COLLAR
SUPPLY AIR
BOTH SIDES
AND FRONT
PANEL WITH
CAMLOCK
ACCESS
4-3/8
ADD 2" FOR
MERV11 FILTER
HEIGHT
RETURN AIR
COIL RETURN CONN.
COIL SUPPLY CONN.
COIL DRAIN CONN.
[MALE 3/4-14 NPT]
[MALE 1/2-14 NPT SECONDARY]
SIDE VIEW
FILTER RACK WITH
TOOLLESS ACCESS
FROM SIDES AND TOP
1" RETURN AIR COLLAR
2
E
WIDTH
FRONT VIEW
F
1"
NOTES:
1. All dimensions are in inches (±
1
/4 in.).
2. Any modifications to product specifications by any person are subject to acceptance of the factory. Product specifications are subject to
change without notice.
3. Left hand shown, right hand opposite.
4. Drain pan removal is on the piping side of the unit.
5. “C” dimension is measured from coil side of the unit.
UNIT
42BVE
DIMENSIONS (in.)
Fan SizeDepthWidthHeight
Supply DuctReturn Duct
AB CEF
069 x 4202836
1
/
2
71/
8
101/
2
163/
4
24161/
2
089 x 62028361/
2
81/
2
101/
2
151/
4
24161/
2
1010 x 42237393/
8
71/
8
115/
8
241/
2
33181/
4
1210 x 72237393/
8
10115/
8
211/
2
33181/
4
1611 x 102247393/
8
133/
8
123/
4
163/
4
43181/
4
2012 x 92448451/
8
121/
2
133/
4
173/
4
44203/
4
3012 x 122848541/
4
157/
8
133/
4
164429
4015 x 12286257
5
/
8
161/
2
161/
8
223/
4
5829
A42-4242
Fig. 5 — Unit Dimensions — 42BHV Fan Coil Base Unit (No Controls)
5
A
C
B
1"
TOP VIEW
8-3/4"
17-15/16"
DOOR OPEN
HEIGHT
2"
F
1"
E
WIDTH
FRONT VIEW
MOTOR CONTROLS
AND MOTOR MOUNTED
SAME SIDE AS
COIL CONNECTIONS
SUPPLY AIR
DEPTH
1" SUPPLY AIR COLLAR
BOTH SIDES AND FRONT
PANEL WITH CAMLOCK ACCESS
4-3/8
ADD 2" FOR MERV11 FILTER
COIL RETURN CONN.
COIL SUPPLY CONN.
RETURN AIR
1" RETURN AIR COLLAR
COIL DRAIN CONN.
[MALE 3/4-14 NPT]
[MALE 1/2-14 NPT SECONDARY]
SIDE VIEW
FILTER RACK WITH
TOOLLESS ACCESS
FROM SIDES AND TOP
NOTES:
1. All dimensions are in inches (±
1
/4 in.).
2. Any modifications to product specifications by any person are subject to acceptance of the factory. Product specifications are subject to
change without notice.
3. Left hand shown, right hand opposite.
4. Drain pan removal is on the piping side of the unit.
5. “C” dimension is measured from coil side of the unit.
UNIT
42BVE
DIMENSIONS (in.)
Fan SizeDepthWidthHeight
Supply DuctReturn Duct
AB CEF
069 x 4202836
1
/
2
71/
8
101/
2
163/
4
24161/
2
089 x 62028361/
2
81/
2
101/
2
151/
4
24161/
2
1010 x 42237393/
8
71/
2
115/
8
241/
2
33181/
3
1210 x 72237393/
8
10115/
8
211/
2
33181/
3
1611 x 102247393/
8
133/
8
123/
4
163/
4
43181/
3
2012 x 92448451/
8
121/
2
133/
4
173/
4
44203/
4
3012 x 122848543/
16
157/
8
133/
4
164429
4015 x 12286257
5
/
8
167/
16
161/
8
223/
4
5829
a42-4243
Fig. 6 — Unit Dimensions — 42BHV Fan Coil Base Unit with Motor Control Option
6
SUPPLY AIR
DEPTH
COIL RETURN CONN.
COIL SUPPLY CONN.
COIL DRAIN CONN.
[MALE 3/4-14 NPT]
[MALE 1/2-14 NPT SECONDARY]
SIDE VIEW
FILTER RACK WITH
TOOLLESS ACCESS
FROM SIDES AND TOP
1" RETURN AIR COLLAR
RETURN AIR
4-3/8
ADD 2" FOR MERV11 FILTER
BOTH SIDES AND FRONT
PANEL WITH CAMLOCK ACCESS
ELECTRIC HEAT AND MOTOR
MOUNTED SAME SIDE AS
COIL CONNECTIONS
20"
DOOR OPEN
HEIGHT
2"E
WIDTH
FRONT VIEW
1"
F
9-11/16"
1" SUPPLY AIR
COLLAR
TOP VIEW
1"
13-13/16
C
B
A
NOTES:
1. All dimensions are in inches (±1/4 in.).
2. Any modifications to product specifications by any person are subject to acceptance of the factory. Product specifications are subject to
change without notice.
3. Left hand shown, right hand opposite.
4. Drain pan removal is on the piping side of the unit.
5. “C” dimension is measured from coil side of the unit.
UNIT
42BVE
DIMENSIONS (in.)
Fan SizeDepthWidthHeight
Supply DuctReturn Duct
AB CEF
069 x 4202836
1
/
2
87/
8
107/
8
163/
4
24161/
2
089 x 62028361/
2
87/
8
107/
8
151/
4
24161/
2
1010 x 42237393/
8
103/
8
12241/
2
33181/
3
1210 x 72237393/
8
103/
8
12211/
2
33181/
3
1611 x 102247393/
8
137/
8
13163/
4
43181/
3
2012 x 92448451/
8
13141/
8
173/
4
44203/
4
3012 x 122848543/
16
161/
4
141/
8
164429
4015 x 12286257
5
/
8
163/
4
163/
8
223/
4
5829
a42-4244
Fig. 7 — Unit Dimensions — 42BHV Fan Coil Base Unit with Electric Heat Option
7
Step 4 — Prepare Unit — Be sure that unit power re-
Fig. 8 — 42BHE Units with Seismic Compliance Option —
Threaded Rod Suspension
a42-4370
quirements match available power source. Refer to unit nameplate and wiring diagram. Check all tags on unit to determine if
any shipping screws are to be removed. Remove screws as
directed.
Step 5 — Position Unit
1. The air handler has 5/8-in. knockouts in each corner of the
top and bottom panels for suspension rods to pass
through. Be sure to support the unit from underneath until
mounting is complete.
2. Install vibration isolators as shown in Fig. 1 (recommended for all sizes). Field-supplied and field-installed accessories must be independently supported or suspended. It
is recommended that a trapeze suspension be used on
42BHE size 30 and 40 units. (42BHE size 30 and 40 units
with seismic compliance option require a trapeze suspension. See the section 42BHE Units with Seismic Compliance Option.)
3. 42BHE Units with Seismic Compliance Option (optional
for other installations) — For 42BHE (horizontal) units
with seismic compilance option, a threaded-rod trapeze
suspension is required for unit sizes 30 and 40. Install the
trapeze so that it does not block bottom access for filter
removal. Install factory-provided seismic cable restraints.
See Fig. 8 and 9.
4. 42BVE Units with Seismic Compliance Option (optional
for other installations) — 42BVE (vertical) units with
seismic compliance option for non-isolated mounting
must be secured to a pad or base rail using factory-installed mounting brackets. Anchor hardware is field-supplied and must be Hilti Kwik Bolt TZ expansion anchors
or similar carbon steel anchors tested in accordance with
ACI (American Concrete Institute) 355.2 and ICC-ES
(International Code Council-Evaluation Service) AC 193.
See Fig. 10 for anchor size, mounting hole locations, and
relevant dimensions.
42BVE (vertical) units with seismic compliance option
for isolated mounting must be mounted using the vibration isolators provided by the factory with the unit. Anchor hardware is field-supplied and must be Hilti Kwik
Bolt TZ expansion anchors or similar carbon steel anchors tested in accordance with ACI 355.2 and ICC-ES
AC 193. See Fig. 11 for isolated mounting locations and
spring mounting details.
5. For units with mixing boxes, follow Step 9 for installation
instructions.
6. To ensure proper drainage and operation, be sure unit is
level. DO NOT mount the unit on a slope. The pitch of a
suspended unit can change after coil is filled; recheck
after filling. Drain pan has built-in slope to ensure proper
drainage.
7. Sufficient clearance must be maintained for service and
maintenance. Ensure that there is a minimum clearance of
24 in. on access side for motor, pulley and belt access.
Filter shall be removed from side or top of the filter rack
on vertical unit (42BVE) and side or bottom of the filter
rack on horizontal unit (42BHE). If side access to filter is
desired, the minimum clearance required is the width of
the filter rack plus 6 inches.
8. Protect unit from damage from jobsite debris. Do not
allow foreign material to fall into drain pan. Prevent dust
and debris from being deposited on motor or fan.
TRAPEZE - REQUIRED ON
42BHE UNIT SIZES30 AND 40.
1.5” x 1.5” x 1/4” ANGLE
FIELD-SUPPLIED AND INSTALLED
ALONG BOTH LONG EDGES.
WASHER AND DOUBLE
NUT (FIELD
FURNISHED AND
INSTALLED)
5/8” KNOCKOUTS
FOR SUSPENSION
RODS (4 PLACES
TOP AND 4
PLACES BOTTOM
OF UNIT
ISOLATORS - 4
PER UNIT (FACTORY
FURNISHED AND FIELD
INSTALLED)
3/8” THREADED ROD
SUSPENSION
(FIELD
FURNISHED AND
INSTALLED)
8
SUPPORT RODS
TO STRUCTURE
42BVE
UNIT
SEE DETAIL A
ISOLATION HANGER
QTY (4) REQUIRED
SLOTTED
AT TAC H ME N T
BRACKET
45˚-60˚
45˚
45˚
SIDE VIEW
ISOLATION
HANGER
QTY (4)
TOP VIEW
TO CEILING
ATTACHMENT
TO CEILING
ATTACHMENT
TO CEILING
ATTACHMENT
TO CEILING
ATTACHMENT
DETAIL A
SLOTTED
BRACKET
ATTACHMENT BRACKET
CEILING ATTACHMENT
TYPE (NON-SLOTTED)
CEILING
AT TAC H ME N T
HARDWARE
FIELD-SUPPLIED
CEILING ATTACHMENT
DETAIL
½˝ HEX HEAD BOLT
½˝ LOCK NUT
Fig. 9 — 42BHE Units with Seismic Compliance Option —
Mounting Details, Cable Restraint Kit
a42-4394
NOTES:
1. Kit consists of
4—Slotted brackets
4—Holed Brackets
16—Bolts
16—Serrated flange nuts
4—20-ft lengths of cable (
Step 6 — Make Piping Connections (See
Table 1 and Fig. 2-7)
DRAIN — The unit has a double-sloped condensate drain pan
to ensure proper drainage. The condensate drain must be at
3
least
/4-in. copper, galvanized, black iron, or PVC piping. Install the trapped drain line in accordance with all applicable
codes. Slope drain away from unit to prevent overflowing and
insulate the line to prevent sweating.
Drain piping should be sloped a minimum of
away from the unit. Condensate drain must be trapped for
proper drainage and odor control. The differential height of the
trap inlet to outlet must be at least 1 in. wg greater than the total
static pressure of the unit. The differential height of the outlet to
the bottom of the trap must not be less than the total static pressure of the unit.
The 42BVE units should be installed on a pad. The height
of the pad should be adequate to allow for a proper condensate
trap. The condensate trap shown in Fig. 12 is for a unit with a
total static pressure (TSP) of 2 in. wg with a 1-in. wg safety
factor for any change in operating conditions. The A dimension
must equal the system TSP plus 1 in. wg. The B dimension is
1
/8-in. per ft
one half of A, and C is the total of A + B + pipe diameter.
11
valves are in proper operating position and are easily accessible
42BHE/BVE
UNIT
CASING
3.0
1.5
CLEAN-OUT
ALLOW A MINIMUM OF
“C” INCHES FROM BOTTOM
OF UNIT TO FINISHED FLOOR
(42BVE UNIT) OR TO FALSE
CEILING (42BHE UNIT).
C
B
A
Fig. 12 — Condensate Trap
NOTE: Dimension C is the total of A + B + the pipe diameter.
a42-4366
for adjustment.
HYDROSTATIC TEST — When all joints are completed,
perform hydrostatic test for leaks. Hydronic systems should be
tested with water (some components are not designed to hold
gas). If gas testing is necessary, pressure must NOT exceed
80 psig. All chilled water piping and valves not located over
drain pans or drip lips must be insulated to prevent damage
from sweating. Vent all coils during final preparations. (See
Step 10, section 6.)
WARNING
Never pressurize unit beyond the specified test pressure.
Always pressure test with an inert gas or fluid (nitrogen or
clear water) to avoid possible unit damage or personal
injury in the event of a leak during testing.
The unit drain pan is equipped with a secondary connection
that must be piped to an open-site drain. This will prevent overflow and possible building damage if the primary drain is
blocked. The secondary drain connection can be capped if potential overflow will not damage the building or unit.
WATER SUPPLY/RETURN CONNECTIONS — Install piping in accordance with all applicable codes. The supply and
return connections are marked on the coil stub ends with an “S”
on the supply (inlet) and an “R” on the return (outlet). Blue
letters mark chilled water connections, red letters indicate
steam or hot water connections. Install valves in lines in
accordance with valve manufacturer’s instructions. Be sure
Check interior unit piping for signs of leakage from shipping damage or mishandling. If leaks are found, notify your lo-cal Carrier representative before initiating any repairs.
CAUTION
All water coils must be protected from freezing after initial
filling with water. Even if system is drained, unit coils may
still hold enough water to cause damage when exposed to
temperatures below freezing.
INSULATION — Following the hydrostatic test, insulate all
piping to unit to prevent sweating.
Table 1 — Unit Physical Data
UNIT SIZE 42BHE, BVE0608101216203040
NOMINAL CFM600800100012001600200030004000
42BHE OPERATING WT (lb)
(no heat/ with heat)
42BVE OPERATING WT (lb)
(no heat/ with heat)
FILTERS (2 in. pleated)
Number...Size (in.)1...161/2 x 24 1...161/2 x 24 1...181/4 x 33 1...181/4 x 33 2...181/4 x 211/22...203/4 x 22 2...29 x 22 2...29 x 29
Face Area (sq ft)2.82.84.24.25.56.38.911.7
HYDRONIC COILS
Size (in.)15 x 2015 x 2015 x 2915 x 2915 x 3918 x 4027 x 4027 x 54
Face Area (sq ft)2.12.13.03.04.14.97.710.3
Fins per inch
Coil Water Volume (approx. gal.
per row of coil)
FANS
Qty...Size (in.)1...9 x 41...9 x 61...10 x 41...10 x 71...11 x 101...12 x 91...12 x 12 1...15 x 12
/4 nominal, 0.875 OD1 nominal, 1.125 OD11/2 nominal, 1.625 OD
1
/2 nominal, 0.625 OD1 nominal, 1.125 OD11/2 nominal, 1.625 OD
3
/4 nominal, 0.875 OD1 nominal, 1.125 OD11/2 nominal, 1.625 OD
1
/2 nominal, 0.625 OD11/2 nominal, 1.625 OD
1
/4 nominal, 0.375 OD
3
/4 MPT
/2 nominal, 1.625 OD
1
/2 nominal, 0.625 OD
12
Step 7 — Make Electrical Connections — Refer to
the unit rating plate for supply voltage, motor and heater amperage, and required circuit ampacities. (See Tables 2-4.) The
unit wiring diagram shows all factory and field wiring. Most of
the unit motors are dual voltage that are factory wired for a
specified voltage. The motors should be checked to ensure that
they are wired for the correct voltage and rotation.
Units equipped with factory-installed motor controls and
disconnect will comply with NEC requirements for disconnect,
motor controller and motor overload protection. Separate disconnect and motor starter are not required to comply with NEC
requirements.
All field wiring should be done in accordance with all applicable local and national codes. Any factory wiring modifications without factory authorization will void all factory warranties and nullify any agency listings.
The manufacturer assumes no responsibility for any damage and/or injuries resulting from improperly installed or wired
components.
Install fan switches, thermostats and other accessories in
accordance with accessory manufacturer’s instructions and applicable wiring diagram.
Table 2 — 42BHE,BVE Electric Heater Availability
kW
1.0●●——————
1.5●●●●————
2.0●●●●————
2.5●●●●●———
3.0●●●●●———
3.5●●●●●●——
4.0●●●●●●——
4.5●●●●●●——
5.0●●●●●●——
6.0●●●●●●●●
7.0—●●●●●●●
8.0—●●●●●●●
9.9——●●●●●●
12.0———●●●●●
14.0————●●●●
15.0————●●●●
16.0————●●●●
18.0—————●●●
19.9—————●●●
25.0——————●●
30.0——————●●
35.0———————●
39.9———————●
● — Standard Offering
— — Not Offered
NOTES:
1. Stages available:
a. Single phase: 1 to 12 kW, 1 stage only
b. Three phase: 1 to 39.9 kW, 1 stage only
2. Electric Heating Capacities (Btuh) = Heater kW x 3413
3. Electric Heater Amperage for Single-phase Power = (Heater
kW x 1000)/Applied Voltage
Electric Heater Amp. for 3-phase Power = (Heater kW x 1000)/
(Applied Voltage x 1.73).
0608101216203040
LEGEND
3 to 12 kW, 1 stage or 2 stage
4 to 39.9 kW, 1 or 2 stage
12 to 39.9 kW, 1, 2 or 3 stage
1. Motor full load amps refer to National Electric Code (NEC)
amps; actual motor nameplate amps may vary.
2. NEC data extrapolated for 277 v.
3. Motors are open drip proof, ball bearing, single speed, 1750
rpm rated at continuous duty, 104 F ambient with reversible
rotation.
4. 5HP motors available only on size 40 units.
1
1
/
/
4
3
Nominal HP
1
3
/
/4111/2235
2
SERVICE SWITCHES: — The service switch is an On/Off
switch on incoming power supply to unit. Proper amperage
load must be determined before switch can be selected. The
range of the fused or non-fused service switch is 0 to 40
amps.
MCA (minimum circuit amps) = 1.25 x sum of all loads.
MFS (maximum fuse size = MCA rounded up to next
available fuse size.
13
Step 8 — Make Duct Connections — Install all duct-
Fig. 13 — Assemble Base Rails
a42-4164
a42-4165
Fig. 14A — Install Mixing Box — 42BHE units
a42-4373
work to and from unit in accordance with all applicable codes.
Duct construction must allow unit to operate within the limits of
the unit external static pressure as shown on job submittals.
Units designed to operate with ductwork may be damaged if
operated without the intended ductwork attached. Units configured to bring in outside air should have some method of low
temperature protection to prevent coil freeze-up.
Insulate all ductwork as required. Use flexible connections
to minimize duct-to-duct alignment problems and noise transmission where specified. Acoustic lining of main supply and
return duct should be considered for noise control. Noise transmission will be reduced when return grilles are located as far as
possible from the unit.
Install ductwork, accessory grilles, and plenums so that they
do not restrict access to filter.
NOTE: Prevent dirt, dust, and debris from settling in unit.
Step 9 — Install Mixing Box — Mixing boxes are
preassembled from the factory. A linkage kit consisting of
2 crankarms, 2 swivels, and either a 25-in. (unit sizes 06-16) or
a 34-in. (unit sizes 20-40) length of
field installation of the actuator.
To install the mixing box:
1. Assemble the mixing box base rails using the provided
hardware. The base rails are marked with identifying letters. See Fig. 13.
2. Place unit on the base rails. Install mixing box and attach
to base rails using the no. 8 x
tions shown in Fig. 14A (42BHE units) or Fig. 14B
(42BVE units).
3. Seal the connection between the mixing box and the return duct flange.
5
/16 in. rod is provided for
1
/2 in. fasteners at the loca-
NOTE: Be careful not to tape or seal the filter access
panel.
MOUNTING
LOCATION
DETAIL ADETAIL B
SEE DETAIL A
SEE DETAIL B
MOUNTING
LOCATION
14
SEE DETAIL A
Fig. 14B — Install Mixing Box — 42BVE units
a42-4372
SEE DETAIL B
MOUNTING
LOCATION
MOUNTING
LOCATION
DETAIL A DETAIL B
Step 10 — Make Final Preparations
1. TURN POWER OFF. (Open unit electrical disconnect.)
2. Clean unit thoroughly. Remove dirt and debris from unit,
especially drain pan, drain line, motor and fan. Pour water
into drain pan to check that drain operates properly.
3. Rotate fan wheel by hand to be sure wheel is free and
does not rub housing. The 42BHE,BVE belt drives are
factory set at the speed required for the design specifications specified when ordered. These drives may be adjusted to achieve different speed by qualified personnel
during air system balancing. Refer to the Start-Up section
before energizing the unit. Check fan belt tension as described in the Service section which follows.
4. Check that a clean air filter of proper type and size is installed in unit filter rack after commissioning. See Table 1
and Clean or Replace Air Filters section. Do NOT operate unit without filter.
5. Turn on water supply. Open all valves. Check for leaks.
Recheck pitch of suspended unit.
6. Vent all air from unit coil and related piping. If air vent is
manual, release air by turning air vent screw 1
counterclockwise with screwdriver. When a steady
stream of water begins to escape, close valve. If vent is
automatic, trapped air will be released automatically. Vent
releases air slowly, usually dripping water into the drain
pan in the process.
1
/2 turns
CAUTION
The air vent provided on the unit is not intended to replace
the main system vents and may not release air trapped in
other parts of the system. Inspect the entire system for
potential air traps and vent those areas as needed. Some
systems may require repeated venting over a period of time
to properly eliminate air from the system. Failure to do so
could result in equipment damage.
7. TURN POWER ON. (Close unit electrical disconnect.)
NOTE: Be sure power is off before making any adjust-
ments inside unit.
8. Check fan and motor operation. Motor to fan wheel rotation must match airflow direction shown in Fig. 2-7.
Set unit air delivery for required blower rpm per job submittals or product data catalog. Adjust fan motor pulley
(Fig. 15) as follows:
a. Loosen setscrew on movable pulley flange.
b. Screw flange toward fixed flange to increase fan
speed and away from fixed flange to decrease speed.
c. Reset setscrew.
d. Check belt tension. The drive belt should be ten-
sioned to allow
point between pulleys with moderate pressure.
1
/2 to 3/4-in. deflection at the mid-
15
Inspect the unit for loose wires, correct blower wheel opera-
Fig. 15 — Fan Pulley Adjustments
a42-89tf
tion, and loose or missing access panels or doors. Unless otherwise required for balancing and start-up procedures, units
should not be operated without proper ductwork, supply/return
air grilles, and access panels and/or doors in place.
CAUTION
Do not exceed motor nameplate FLA (full load amps).
Operator must confirm motor current draw before putting
unit into service and again after air balancing the system.
Failure to do so could result in equipment damage.
START-UP
CAUTION
Follow all safety considerations previously outlined. Failure to do so could result in personal injury or equipment
damage.
Start-up procedures vary depending upon the time of year
(summer or winter) and building characteristics (new building
or old building, occupied or unoccupied, etc.).
Start-up in the Cooling mode requires that proper care be given to avoid condensation problems. Condensation forms on surfaces that are colder than the dew point of the surrounding air. If a
unit is started and is fed low-temperature chilled water in a hot,
humid setting, condensation will form on many parts of the unit.
In order to avoid excessive condensation, water of higher
temperature should be used, approximately 65 to 70 F. Also, the
building should be as completely enclosed as possible and
outside-air supply fans and toilet and kitchen exhaust fans should
be off.
As the building temperature drops, the chilled water temperature can gradually be reduced until it reaches 50 F. At this
point, the outside-air fans can be turned on. When the chilled
water temperature is reduced to its design point, the exhaust
fans can be turned on.
Air System Balancing — All ductwork, air grilles, fil-
ters, and access doors and panels must be complete and connected to establish actual system operating conditions before
air system balancing procedures are started.
NOTE: Units are factory set for system designed operating
conditions specified at the time of order entry.
Proper belt drive alignment and tension must be maintained
when adjusting the unit fan drive speed. The drive belt tension
should not exceed
leys under 8 lb of force. New belts tend to stretch during their
initial period of use. After 5 days of operation, check and readjust belt tension and pulley alignment if necessary. Failure to do
so may result in excessive unit noise and/or premature belt/
bearing failure.
3
/16-in. deflection midway between the pul-
SERVICE
WARNING
Lock open and tag electrical disconnect before servicing
equipment. Failure to do so could result in personal injury
or death.
Clean Coils
1. Brush between coil fins with a stiff wire brush. Do not
bend fins. Follow up by cleaning with a vacuum cleaner.
If coil is cleaned with an air hose, take care not to drive
dirt and dust into other components.
2. Install clean air filters.
Check Drain — Check drain pan, drain line and trap at
start of each cooling season. A standard type pipe cleaner for
3
/4-in. ID pipe can ensure removal of obstructions so that condensate is carried away. Check the drain line at filter cleaning
time during the cooling season.
Fan and Motor Bearings — Fan shaft bearings are
permanently lubricated and sealed, and need no attention.
Check tag on motor for motor bearing lubrication instructions
(if any). Most motors furnished with these units are permanently lubricated.
by using a straight edge as shown in Fig. 15. Retighten setscrew(s).
Adjust Fan Belt Tension — Loosen fan motor base
mounting screws. Reposition the motor so that belt deflection
does not exceed
tighten motor mounting screws and recheck fan belt tension.
3
/16-in. at belt midpoint under 8 lb of force. Re-
Clean Fan Wheel — Use a stiff brush or vacuum to re-
move dirt and debris from scroll. Wipe all fan surfaces with a
damp cloth.
Clean or Replace Air Filters — At the start of each
cooling season and after each month of operation (more or less
depending on operating conditions), replace unit filter.
To remove filter, slide filter out of filter rack from either side
of return-air duct collar.
THROWAWAY OR PLEATED FILTER — Replace filter
with a good quality filter of the size shown in Table 1. Do not
attempt to clean and reuse a disposable filter.
Recommended Maintenance
Quarterly
• Lubricate motor and blower bearings (if applicable)
• Check and adjust belt tension
• Change air filter
Annually — in addition to quarterly maintenance
• Inspect all wiring connections and tighten if necessary
• Check and tighten set screws on pulleys
• Clean coil and drain pan
• Clean blower wheel as needed
16
TROUBLESHOOTING
Excessive Condensation on Fan Coil Unit
Parts —
chilled water through a fan coil unit with its fan off. If fan cycling control is used, a water flow control valve should be installed to shut off the water when the fan stops.
The following two practices will also help avoid condensa-
tion problems:
1. Continuous fan operation with motorized chilled water
2. Continuous fan operation with thermostat control to
Excessive condensation can be caused by running
valve controlled by thermostat.
switch fan from high to low speed (instead of switching it
off).
Motor Overload — The following are causes and reme-
dies for motor trip-out on overload:
Cause:Fan delivers too much air because external stat-
ic pressure is lower than the design pressure.
Remedy: Reduce fan speed by adjusting motor pulley or
changing fan shaft pulley to larger diameter.
Cause:Air temperature across fan motor is too high
(heating mode).
Remedy: Check ambient temperature on motor’s name-
plate. Compare to actual air temperature at the
motor or at the fan discharge. If motor’s nameplate lists an ambient temperature of 104 F and
the actual air temperature is higher, either lower the air temperature or obtain a special motor
rated for high ambient temperatures.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53420009-01Printed in U.S.A.Form 42B-4SIPg 1811-13Replaces: 42B-3SI
INITIAL START-UP CHECKLIST
FOR AIRSTREAM™ 42BHE,BVE06-40 SYSTEM FAN COIL AIR CONDITIONERS
(Remove and use for job file.)
START-UP CHECKLIST
The following is a checklist to be completed before start-up:
1. General visual unit and system inspection
2. Check that unit is level
3. Record electrical supply voltage
4. Check all wiring for secure connections
5. Verify with straight edge alignment of motor and blower pulleys
6. Tighten all set screws
7. Confirm V-belt is properly tightened
8. Check condensate drain connection
9. Verify trap is deep enough
10. Prime the trap with water
11. Check supply and return water connections for leaks
12. Fill systems with water by opening supply ball valve and control valve
13. Open air vent on top of coil to vent air out of system
14. Open return ball valve
15. Engage power only long enough to verify proper blower rotation
16. Check all ductwork and grilles in place
17. Check all unit panels and filters in place
18. Start fans, pumps, chillers, etc.
19. Check for overload conditions of all units
20. Check all ductwork and units for air leaks
21. Balance water systems, as required
22. Balance air systems, as required
23. Record all final settings for future use
24. Check piping and ductwork for noise or vibration
25 Check all dampers for proper operation
26. Verify proper cooling operation
27. Verify proper heating operation
28. Reinstall all covers and access panels
29. Verify proper condensate drainage
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