4
Fig. 3 — Unit Installation - Recommended Clearances (Top View)
The unit must be mounted level. DO NOT mount the unit on a
slope. The drain pan has a built-in slope to ensure proper drain-
age. Mounting the unit on a slope may result in improper drain-
age. For threaded rod suspension see Fig. 4. Field-furnished
and installed accessories such as ductwork, mixing boxes,
economizers, dampers, etc. must be independently supported
or suspended and must not rely on the unit for support.
Fig. 4 — Threaded Rod Suspension Mounting Details
TOTAL WEIGHT UNIT CORRECTION FACTOR (LB)
See Fig. 5 for 8-row water-filled coils and double wall con-
struction (see Table 1). For a different number of rows, total
unit weight can be determined by:
Total unit weight can be adjusted by:
1. Identify the size of unit and number of rows
2. From Fig. 5, identify the total weight of the unit
3. From Table 1, identify the correction factor and deduct
this factor from the total weight.
See Fig. 5 for operating weight information. Weight informa-
tion is based on 8-row water-filled coils and double wall cabi-
net construction. For a different coil and cabinet options, use
the weight correction factor table.
Table 1 — Total Unit Weight Adjustment
NOTES:
1. Unit weights (shown in pounds), ± 10%, are based on the largest
water-filled coil.
2. The operating weight information is based on 8-row water-filled
coils and double wall cabinet construction. For a different coil and
cabinet options, use the weight adjustment table.
MINIMUM RECOMMENDED
CLEARANCE
MINIMUM RECOMMENDED
CLEARANCE
ELECTRIC HEAT CONTROLS
AIRFLOW
AIRFLOW
FILTER
DRAIN PAN
ELECTRIC HEAT
ELEMENTS
29 IN.
MINIMUM RECOMMENDED
CLEARANCE
29 IN.
29 IN.
FAN MOTOR
PIPING PACKAGE
FAN
WASHER
DOUBLE NUTS
TRAPEZE
BOLT
OPTIONS
42DH UNIT
06
08
10
12
16
20
30
4-Row Coil
–21
–21
–28
–28
–39
–46
–98
5-Row Coil
–16
–16
–21
–21
–29
–35
–74
6-Row Coil
–11
–11
–14
–14
–20
–23
–49
7-Row Coil
–5
–5
–7
–7
–10
–12
–25
Single Wall
Construction
–31
–31
–40
–40
–47
–58
–67