Repositioning Indoor Air Temperature Sensor; Indoor Unit Placement And Preparation - Lennox MS8 SERIES Installation And Service Procedures

PREVAILING WINDS (HEAT PUMP ONLY)
If unit coil cannot be installed away from prevailing winter
winds, a wind barrier should be constructed. Size barrier at
least the same height and width as outdoor unit. Install
barrier 12 inches minimum (305 mm) from the sides of the
unit in the direction of prevailing winds as illustrated.
PREVAILING WIND BARRIER
PREVAILING WINTER WINDS
WIND BARRIER
INLET AIR
DISCHARGE AIR
FIGURE 6
Repositioning Indoor Air Temperature
Sensor
The indoor temperature sensor may be installed in an
alternate location to facilitate shipping (figure 7). It is
recommend that the sensor is relocated to the proper
position shown in figure 8. Refer to the procedure on page
for removal of the front cover.
SHIPPING LOCATION
FIGURE 8

Indoor Unit Placement and Preparation

INDOOR UNIT LOCATION
Minimum clearances must be maintained as specified in
figure 2. In addition, the following items should be
considered:
MS8C / MS8H (208-230V)
12" (305 MM) MINIMUM DISTANCE
SENSOR
FIGURE 7
CORRECT
LOCATION
AVOID
1. Direct sunlight if possible.
2. Locating unit less than 3-1/4" (1 meter) away from
combustible materials and vapors.
3. Locating unit near heat sources which could affect
system performance.
DO:
1. Locate the indoor unit where the room can be uniformly
cooled. Install unit as high as possible on the wall for
best performance.
2. Select a wall location that can support the weight of the
unit.
3. Select a location where line set and condensate line will
have the shortest run to the outside of the structure.
4. Allow sufficient space around unit for proper operation
and maintenance.
5. Consider vertical rise between the indoor unit and
outdoor unit. Do not exceed the maximum vertical line
rise of the line set between the indoor unit and outdoor
unit (table 12).
6. Install the indoor unit a minimum of 36 inches (914 mm)
away from any antenna, power cords (lines), radio,
telephone, security system, or intercom. Electrical
noise and radio frequencies from any of these sources
may affect operation.
DETERMINING WALL MOUNTING BRACKET
LOCATION
1. Remove the wall mounting bracket from the indoor unit.
WALL MOUNTING BRACKET REMOVAL
A. Remove the shipping screw that secures the
wall mounting bracket to the rear of the unit.
B. Remove bracket from rear panel of indoor unit.
REAR OF UNIT
2. Determine the optimal exit location for bundle (line set,
condensate line and wiring.
DETERMINING EXIT LOCATION
CONDENSATE/
REFRIGERANT
LINE EXIT LEFT
CONDENSATE/
REFRIGERANT LINE
EXIT LEFT REAR
Page 10
FROM INDOOR UNIT
FIGURE 9
FIGURE 10
CONDENSATE/
REFRIGERANT LINE
EXIT RIGHT REAR
(RECOMMENDED)
CONDENSATE/
REFRIGERANT
LINE EXIT RIGHT