MBVC Installation Manual

3
Secure the coil and blower together with the two connector
plates and screws supplied in the blower bag assembly. Use
one connector plate and six screws on each side of the unit.
If accessory electric heat is to be added, install now per the
instructions shipped with the heater kit.
UPFLOW INSTALLATION
For upflow installations, the blower cabinet must sit on top of
the coil cabinet (Figure 2). NOTE: All panels should be in
place before installing the cabinet.
1. Place the blower and coil cabinet assembly upright on
the return duct or duct opening. Ensure that there is
ample support for the cabinet assembly and all
attached ductwork.
2. Connect refrigerant and condensate drain connections
per the evaporator coil installation instructions. Ensure
refrigerant and drain lines do not interfere with service
access to the unit.
3. Attach supply ductwork. Seal connections between unit
and ductwork as required to reduce/eliminate air
leakage.
4. Make electrical connections as specified in Electrical
Connections section of this manual.
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Figure 2 - Upflow Application
COUNTERFLOW INSTALLATION
For counterflow installations, the evaporator coil cabinet must
sit on top of the blower cabinet (Figure 3). NOTE: All panels
should be in place when installing the unit.
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Figure 3 - Counterflow Application
NOTE: Supply ductwork for counterflow applications, must
be Class I. However, if combustible ductwork is used, sheet
metal protection is required.
1. Place the blower and coil cabinet assembly supply
outlet on the supply duct or duct opening. Ensure there
is ample support for the unit and all attached ductwork.
2. Connect refrigerant and condensate drain connections
per the evaporator coil installation instructions. Ensure
refrigerant and drain lines do not interfere with service
access to the unit.
3. Attach return ductwork. Seal connections between unit
and ductwork as required to reduce/eliminate air
leakage.
4. Make electrical connections as specified in Electrical
Connections section of this manual.
HORIZONTAL INSTALLATION
For horizontal installations, the coil cabinet must be upstream
of the blower cabinet (Figures 4 and 5). NOTE: All panels
should be in place when installing the unit.
1. Set the unit near its final installation place. The unit must
be supported along the entire length of the unit. Rubber
isolation pads may be used to reduce sound and vibra-
tion transmission. Ensure there is ample support for the
unit and all attached ductwork.
NOTE: Unit must be mounted with access panel facing the
front as shown in following diagrams.
Blower Cabinet
Support
Access
Panel
Figure 4 - Attic Installation