M-Series Technical Manual
23
Cambridge Engineering, Inc.
IMPORTANT
Before proceeding with installation, verify the feasibil-
ity of the location selected with respect to accessibility
to the equipment for service and maintenance func-
tions.
IMPORTANT
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 contaminants to be
drawn into the heater. Consult local codes for appli-
cable building code provisions for ventilation air.
1. Prepare the wall for installation. (See page 25 for
opening dimensions for your specific heater.)
IMPORTANT
Accurate measurements are critical and will affect the
installation process.
2. Install heater support rods per the structural engi-
neer’s recommendations.
3. Use a crane or comparable lifting device to raise and
position the equipment. Block the heater where nec-
essary. Use a spreader bar to prevent damage and
connect slings to the lifting eyes.
The Vertical Mount heaters may be shipped in
sections due to shipping constraints. Review the
Accessory Identification drawings (see page 4) to
identify the locations of these sections.
IMPORTANT
Cambridge Engineering recommends mounting the
heater’s rain hood a minimum of 60" off the ground or
other surfaces in areas where snow accumulation could
impact operation.
4. Attach each Mounting Leg to the inlet elbow using
the 1/2"-13 x 1-1/2" bolts. The bolts install down-
ward through a clearance hole in the accessory into
a threaded insert in the Mounting Leg. Install all
four legs on the accessory, and then attach the inlet
collar to the inlet elbow using the 5/16"-18 x 1/2"
bolts. Position this assembly with the inlet collar
situated through the wall. Level the assembly by
placing shims under the appropriate legs.
5. Position the next inlet accessory, if specified, on
the inlet elbow, and then secure them to each other
using the 1/2"-13 x 1-1/2" bolts. The bolts install
downward through a clearance hole in the upper
accessory into a threaded insert in the inlet elbow.
6. Position the heater on the last inlet accessory.
Secure the heater using the 1/2"-13 x 1-1/2" bolts.
The bolts install downward through a clearance hole
in the heater into a threaded insert in the inlet acces-
sory.
7. Attach the rain hoods to the inlet collar using the
5/16"-18 x 1/2" bolts.
8. Install fiberglass insulation in the gaps around the
wall opening and inlet collar. Apply enough insula-
tion material to accommodate the full thickness of
the wall.
9. Install finish trim pieces (by others) to the top, sides
and bottom of the inlet collar on both the inside and
outside wall surfaces.
INSTALLATION INSTRUCTIONS
VERTICAL MOUNT - INDOOR CONFIGURATION
