VCB, VFB, VSB & WCB SERIES
Vertical Console Fan Coil Units
INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS
***** WARNING TO INSTALLER, SERVICE PERSONNEL AND OWNER *****
Altering the product or replacing parts with non authorized factory parts voids all warranty or implied war-
ranty and may result in adverse operational performance and/or a possible hazardous safety condition to
service personnel and occupants. Company employees and/or contractors are not authorized to waive this
warning.
GENERAL
The manufacturer assumes no responsibility for equipment
installed in violation of any code requirement.
These instructions give information relative to the installation
of these fan coil units only. For other related equipment refer to
the proper instructions.
Material in this shipment has been inspected at the factory and
released to the transportation agency in good condition. When
received, a visual inspection of all cartons should be made
immediately. Any evidence of rough handling or apparent
damage should be noted on the delivery receipt and the material
inspected in the presence of the carriers representative. If
damage is found, a claim should be filed against the carrier
immediately.
PRE-INSTALLATION CONSIDERATIONS
1) Determine location for mounting the unit to insure best air
circulation within the room.
2) Determine proper cabinet orientation. (See below.)
3) Determine routing of water lines and electrical service to
unit.
DETERMINATION OF RIGHT-HAND / LEFT-HAND REFERENCES
1) Right-hand / Left-hand determination is based on looking at
the fan coil unit from the front.
2) Right-hand units have the thermostat / control box on the
left-hand side and the coil / valve connections and drain
pan are on the right-hand side.
3) Left-hand units have the thermostat / control box on the
right-hand side and the coil / valve connections and drain
pan are on the left-hand side.
The installer must adhere strictly to all local and national code
requirements pertaining to the installation of this equipment.
These units are designed to be installed vertically with zero
clearance to combustible materials.
****** WARNING ******
Unit must not be operated during building construction due to excessive airborne dust and debris. The units must not be operated under any
circumstances without the front panel or an air
filter in place.
4) A condensate line will need to be routed to an open drain
trap.
5) Location of unit must be in an area providing adequate
access to the unit since all components must be serviced
from the front of the unit.
Air Flow
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Right Hand Unit Shown
L2491
11/03
VSB / VFB SERIES (Floor Exposed)
1) Mounting location must allow enough clearance to permit
removal of cabinet panels.
2) After selecting the location for the unit, remove the front
panel. The front panel must be removed on the VS or VF unit
to gain access to the coil, drain connections and electrical
junction box. To accomplish this, pull firmly on the lower
cabinet door (each side) (Figure 1) until the cabinet releases
from its friction fastener. Proceed to lift the door assembly
straight up and off the cabinet frame.
Figure 1
3) Position the unit in its permanent location, making sure it
is level to insure proper drainage and operation, and secure
the unit in place. Two 1/2 inch holes have been provided on
each end of the unit for securing the unit to the wall along
with two 5/16 inch holes on each end of the cabinet frame to
secure cabinet frame to wall. It is recommended that all
mounting holes be used for proper installation. (Figure 2)
Figure 3
4) Note the 1-1/2" x 4-1/2" indentation in the plastic drain pan
(Figure 3). This area is provided for the supply and return
runouts if they are brought up from below the pan. All piping
must be well insulated to prevent sweating. There is a 0.84"
OD condensate drain connection on the secondary drain
pan suitable to receive a standard 3/4" PVC coupling / elbow.
Remove or cover the secondary drain pan before soldering the supply and return coil connections as hot solder
or the torch flame may damage the pan.
5) Solder the 5/8" coil connections in accordance with local
codes and regulations.
6) After coil connections have been made, check for leaks and
bleed the air from the system by venting each coil. (Figure 4)
Figure 2
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Figure 4
VCB SERIES (concealed applications)
1) Mounting location must allow enough clearance to permit
the removal of screws that secure the cabinet panels.
2) After selecting the location for the unit, remove the front
panel.
3) Position the unit in its permanent location, making sure it is
level to insure proper drainage and operation, and secure
the unit in place. Two 1/2 inch holes have been provided on
each end of the unit for securing the unit to the wall. It is
recommended that all four mounting holes be used for
proper installation. (Figure 5)
Figure 5
4) Note the 1-1/2" x 4-1/2" indentation in the plastic drain pan
(Figure 3). This area is provided for the supply and return
runouts if they are brought up from below the pan. All piping
must be well insulated to prevent sweating. There is a 0.84"
OD condensate drain connection on the secondary drain
pan suitable to receive a standard 3/4" PVC coupling / elbow.
Remove or cover the secondary drain pan before soldering the supply and return coil connections as hot solder
or the torch flame may damage the pan.
5) Solder the 5/8" coil connections in accordance with local
codes and regulations.
6) After coil connections have been made, check for leaks and
bleed the air from the system by venting each coil. (Figure 4)
7) Refer to catalog data for the particular unit to make sure that
the external static pressure of the duct and grille are within
the limits of the unit. The duct should be designed for
velocities in accordance with the methods outlined in the
ASHRAE guidebooks.
It is recommended that airborne noise be controlled with
sound absorbing materials and by installing a flexible connection between the unit and ductwork.
8) Replace the front panel and secure with screws.
WCB SERIES (recessed wall)
1) Mounting location must allow enough clearance to permit
the removal of all mechanical parts within the unit.
2) Frame the unit as required so the front panel of the wall unit
will be flush with the drywall surface when installed.
3) Frame around the perimeter of the unit as required for
securing the drywall. See figure 6 for required drywall
openings for each unit.
****** WARNING ******
Proper framing and unit location is critical for unit
performance. Wall panel is required to seal against
the unit panel so there is no air leakage.
4) Mount the unit in its permanent location, making sure it is
level to insure proper drainage and operation, and secure
the unit in place. Two 1/2 inch holes have been provided
on each end of the unit for securing the unit to the studs. It
is recommended that all four mounting holes be used for
proper installation. (Figure 5)
5) Note the 1-1/2" x 4-1/2" indentation in the plastic drain pan
(Figure 3). This area is provided for the supply and return
runouts if they are brought up from below the pan. All piping
must be well insulated to prevent sweating. There is a 0.84"
OD condensate drain connection on the secondary drain
pan suitable to receive a standard 3/4" PVC coupling /
elbow.
Remove or cover the secondary drain pan before soldering the supply and return coil connections as hot solder
or the torch flame may damage the pan.
6) Solder the 5/8" coil connections in accordance with local
codes and regulations.
7) After coil connections have been made, check for leaks and
bleed the air from the system by venting each coil. (Figure
4)
8) After drywall has been installed recheck to make sure the
unit's front panel is flush with the exterior drywall surface.
If not, shimming the unit may be required to obtain a seal
between the unit and wall panel.
9) Install the wall panel to the front of the unit using the 1/4-20
x 1-1/2" long painted Phillips head screws (4 or 6 depending on the unit size). 1/4" cage nuts are located in the slotted
front panel of the unit for the panel screws to attach to.
Tighten the screws until the panel is secure with a good fit
against the wall.
10) Filter change / replacement can be performed by removing
the lower return air grille to access the filter within the unit.
MODEL
NUMBER
3WCB 28" x 42"
4WCB 28" x 50"
6WCB 28" x 58"
8WCB 28" x 66"
10WCB 28" x 74"
12WCB 28’ x 82"
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DRYWALL CUT-OUT DIMENSION
HEIGHT x WIDTH
Figure 6
ELECTRICAL
All wiring must comply with local and national code requirements. The customer or contractor is to provide branch circuit
overcurrent protection and disconnect means. Units are provided with wiring diagrams located on the blower housing, and
nameplate data to provide information required for necessary
field wiring.
Bring the field electrical wiring into the back of the end
compartment opposite the coil connections to the control box.
(Figure 7, Unit mounted controls shown) There is a 7/8" hole
in the control box bottom. Connect power supply in accordance
to wiring diagram.
CONDENSATE DRAIN LINE
Drain line installation must adhere to all code requirements.
The plastic drain pan is to be located under the coil / valve
connections supported by its mounting bracket. Make sure
drain pan is level for proper drainage.
The drain pan connection is suitable to receive a standard
3/4" PVC coupling or elbow. Route the condensate line such
that it will have adequate slope from the pan to the drain. After
THERMOSTAT / CONTROL WIRING
Figure 7
condensate line has been run, make sure plastic drain line from
blower plate nipple is routed to plastic drain pan and plastic cap
is installed on other nipple on the blower plate.
Note: All chilled water piping not located over the drain pan
must be insulated by the installing contractor to prevent
condensation damage.
UNIT MOUNTED THERMOSTAT
A line voltage thermostat is factory mounted and wired. Once
power is applied to the unit, it is ready to operate. All standard
thermostats have continuous fan if system switch is on.
SYSTEM START-UP
1) Prior to start-up, inspect the blower to assure the wheels
turn freely without rubbing on the housing.
2) Pressurize water coil by opening water valves and bleeding
the air from the coil and system.
3) Check 2-way or 3-way valves for proper operation by
energizing thermostat accordingly.
4) Check that blower motor operates on all three speeds.
5) Replace unit cover panel by interlocking top / back edge
MAINTENANCE
1) The filters must be cleaned to maintain optimum perfor-
mance. They should be inspected and cleaned once a
month if required. The filter is a permanent type and may
be removed and washed with a garden hose. Filter should
be completely dry before reinstalling. To remove the filter,
rotate the retaining rod holding the front edge of the filter so
it can drop below the front panel of the cabinet then pull
outward to remove. To reinstall the filter, slide the filter into
the filter channels on both sides of the unit. Rotate filter
retaining rod, on lower front edge of cabinet door, so that it
is under the filter then push the rod upward into the cabinet
door.
2) The condensate drain pan can pick up lint and dirt, espe-
cially with dirty filters. Inspect the drain pan twice a year to
avoid the possibility of overflow.
3) The coil must be clean to obtain maximum performance.
Check once a year under normal operating conditions and,
if dirty, brush or vacuum clean. Care must be taken not to
REMOTE OR WALL MOUNTED THERMOSTAT
If a remote or wall mounted thermostat is used, all wiring is field
supplied and must meet local and national code requirements.
Refer to unit wiring diagram for proper connections.
with cabinet frame. Watch to see that unit mounted thermostat protrudes through the cutout of the cover panel. Align
ball pin on each side with cabinet frame and push firmly to
engage and lock.
6) Check to make sure filter is installed correctly within the
filter channels on each side. Rotate filter retaining rod, on
lower front edge of cabinet door, so that it is under the filter
then push the rod upward into the cabinet door.
damage the aluminum fins while cleaning.
CAUTION: Fin edges are sharp and a potential injury
hazard.
4) If motor service is required, it can be removed in the
following manner:
a) disconnect electrical power to the unit at the discon-
nect switch and lock out.
b) remove two screws, securing blower deck to unit.
c) locate motor lead wires where they connect to the
side panel, (lower rear on the electrical box side).
d) the quick connect plug needs to be squeezed on top
and bottom to release it from its socket. (Dual motor
units have two plugs)
e) now slide blower / motor deck out of unit to service.
f) reverse process to install.
5) On units equipped with back fresh air intake, the insect
screen may be removed for cleaning by lifting the intake box
slightly and pulling it out.
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