S-Series Technical Manual
11
Cambridge Air Solutions
INSTALLATION INSTRUCTIONS
THRU WALL MOUNTING
m
WARNING:
Due to the size and weight of this equipment, it
is recommended the heater mounting structure be
reviewed and approved by a qualified structural
engineer before installing this equipment.
IMPORTANT
Before proceeding with the installation, verify the
feasibility of the location selected with respect to ac-
cessibility to the equipment for service and mainte-
nance functions.
m
CAUTION
To prevent contaminated air from being drawn into
the heater, install the heater’s inlet at least 10 feet
from any building exhaust, process exhaust, sewer
stacks, or other sources that would allow contami-
nants to be drawn into the heater. Consult local
codes for additional references.
1. Prepare wall penetration to the dimensions below.
2. Connect inlet accessories to the unit including
filter section (optional) and rain hood prior to lift-
ing the heater in place. Note the inlet skirt for rain
hood (optional) is installed from the outside of the
building (page 20).
3. Install hanging rods to adequate ceiling supports
and align with the hanging brackets on the unit.
Refer to hanging rod size shown on table below.
Locate the hanging rods so that the weep holes
provided in the rain hood are located a minimum
of 3” beyond the outside wall surface.
4. Remove the lag bolts used to fasten the unit to the
skid. Do not remove the hanging brackets from the
side of the heater. On S400/S800 model heaters,
rotate the mounting brackets 180˚ and retighten the
securing hardware.
5. Use a forklift or comparable lifting device to
raise and position the heater. Take precautions
to prevent equipment damage (dents and/or
scratches) when the heater is being lifted into
position.
6. Use washers and double lock nuts to secure the
unit on the hanging rods.
IMPORTANT
The discharge end of the heater should be raised
slightly (1/8” above level). This allows any ingested
moisture to drain out of the heater through weep
holes located in the rain hood to the exterior of the
building.
7. Apply shims, by others, at the bottom of the rain
hood to take up slack in the opening, leaving a
small joint between the top of the rain hood and
the wall.
8. Install fiberglass insulation in the gaps around the
wall opening and the rain hood. Apply enough
material to accommodate the full thickness of the
wall.
9. Install finish trim pieces (by others) to the top,
sides and bottom of the rain hood on both the
inside and outside wall surfaces.
10. Apply silicone caulk at the joint between the top
of the rain hood and the outside wall surface.
Make certain this is a continuous bead and that it
runs the entire width of the rain hood. Caulk all
other exposed joints.
11. Install the directional elbows. Consult the job
layout for the orientation of the elbows.
Weight
Hanging Rods
Wall Opening**
Model
Qty.
Size
A
B*
C
H
W
S400/S800
550 lbs.
4 (6*)
3/8” dia.
57 7/8”
33¼”
27 7/8”
26”
25½”
S950/S1200/S1600
800 lbs.
4 (6*)
3/8” dia.
69 7/8”
33¼”
43 7/8”
29”
42¼”
S1850/S2200/S3200
1500 lbs.
4 (6*)
1/2” dia.
75¾”
36¾”
48 7/8”
38¾”
47¼”
*For optional filter section
** Dimensions allow for 1” clearance on each side
