Lennox VRF VVCA Series User Manual

7
Figure 3. Suspending Horizontal Unit
AIR FLOW
Secondary Drain Pan
Angle Iron or Unistrut Channel
Front View End View
Electrical Inlet Clerance
4” (102mm)
Threaded Rod
Supports must not
block service access
Horizontal Application
1. Determine knockouts required for drain line
connections.
2. With access door removed, remove drain line opening
to install drain lines.
3. Set unit so that it is sloped toward the end of the unit
with the drain pan (see gure 12).
4. A typical horizontal conguration is shown in gure 3.
5. If the unit is suspended, the entire length of the cabinet
must be supported. If you use threaded rod, use a
piece of angle iron or Unistrut channel attached to the
unit (either above or below) to support the length of
the cabinet. Use eld-supplied 3/8 threaded nylon-
lock nuts and bolts no longer than 1/2 inch to avoid
damaging the coil or lter. Use sheet metal screws to
connect the return and supply air plenums as required.
Horizontal-Left Conversion
1. Remove the coil section panel and the blower section
panel.
2. Remove the T-2 and T-2B sensors from the sleeves.
The sensors look similar; label the sensors so that
they can be reinstalled to the proper locations.
T-2 Sensor black cable, no overlay.
T-2B Sensor clear overlay on black cable.
3. Remove the EXV motor from the EXV body.
4. Remove the T1 sensor from the factory-
provided hole in the coil housing.
The sensor will not be positioned back inside of coil
housing.
5. Slide the coil assembly out of the cabinet. Place coil
on sturdy surface.
Figure 4. T1, T-2 and T2B Factory Installed Sensor
Locations
(Vertical Upow and Horizontal-Right Conguration
Shown)
T-1
T-2
T-2B
Sensor Description
T1 Return Air (room) Sensor
T2 Middle of Coil Sensor
T2B Leaving Coil (outlet) Sensor
Table 1. Coil Sensor Identication
IMPORTANT
When removing the coil, there is a possibility of
equipment damage and personal injury. Be careful
when removing the coil assemble from a unit installed
horizontal. The coil may tip into the drain pan once it is
clear of the cabinet. Support the coil when removing it.
IMPORTANT
The horizontal drain pan is not required in vertical upow
air discharge installations. It must be removed to provide
the best e󰀩ciency and air ow.

Lennox VRF VVCA Series Specifications

General

Brand	Lennox
Model	VRF VVCA Series
Category	Air Handlers
Language	English