M-Series Technical Manual
19
Cambridge Engineering, Inc.
IMPORTANT
Before proceeding with the installation, verify the fea-
sibility of the location selected with respect to acces-
sibility to the equipment for service and maintenance
functions.
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.
IMPORTANT
This heater should be mounted on a concrete pad with
a minimum thickness of 4" and with length and width
dimensions that exceed the dimensions of the heater by
at least 5 feet (30" on each side). The pad should be
poured at least two weeks before installation begins to
permit proper curing. The pad should slope slightly
away from the building (approximately 1/4" per foot) to
avoid water collecting under the heater.
1. Prepare the wall for installation. (See pages 21-22
for opening dimensions for your specific heater.)
IMPORTANT
Accurate measurements are critical and will affect the
installation process.
2. Install the discharge duct through the wall opening.
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 a minimum of 60" off the mounting surface
in areas where snow accumulation could impact the
heater operation.
4. Attach each mounting leg to the inlet accessory (fil-
ter section, inlet damper, or filter section/inlet damp-
er combo, as specified) using the 1/2"-13 x 1-1/2"
bolts. The bolts install downward through a clear-
ance hole in the accessory into a threaded insert in
the mounting leg. Install all four legs on the acces-
sory, then set this assembly in its intended position.
If no inlet accessory is specified, install the legs
directly to the heater. Level the assembly by placing
shims under the appropriate legs.
5. Position the heater on the 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
accessory.
6.
Attach discharge duct to heater.
7. Caulk all joints of the heater’s accessories installed
in the field. Use a clear or gray latex based polyure-
thane caulking to prevent water leaks.
8. Install fiberglass insulation in the gaps around the
wall opening and discharge duct. Apply enough
insulation material to accommodate the full thickness
of the wall.
9. Install finish trim pieces (by others) to the top, sides
and bottom of the discharge duct on both the inside
and outside wall surfaces.
INSTALLATION INSTRUCTIONS
VERTICAL MOUNT - OUTDOOR CONFIGURATION
