HEATER LOCATION INSTRUCTIONS
Arrange units so their discharge air streams:
a.
are subjected to a minimum of interference from
columns, machinery and partitions;
b
.
wipe exposed walls without blowing directly at them;
c.
are directed away from room occupants in comfort heating;
d.
are directed along the windward side when installed
in a building exposed to a prevailing wind.
Locate thermostats approximately 5' (1524mm) above the floor
on interior partition walls or post away from cold drafts, internal
heat sources and away from heater discharge air streams.
Small rooms can be heated by one unit heater.
Large rooms require multi-unit installations. Number and
capacity of units will be determined by volume of building and
square feet of floor area to be heated. Arrange units to provide
perimeter air circulation where each unit supports the air
stream from another.
MOUNTING THE HEATER
GENERAL
The heater may be mounted to discharge the heated air either
horizontally or vertically. When the heater is mounted for verti-
cal discharge, it is recommended that the heater be positioned
so that the access door will open away from the wall to provide
greater access to the wiring and control compartment. If the
heater is to be mounted with the access door facing a wall, the
heater must be mounted far enough from that wall to allow full
opening of the access door (a distance approximately equal to
the width of the heater ... check clearance before installing).
Refer to Table 1 for wall and ceiling clearances before mount-
ing heater.
The heater may be mounted for either vertical or horizontal
discharge by the use of threaded rods. (Refer to Table 2 for
threaded rod sizes required.) Observe the detailed procedures
in the following installation instructions.
The heater may also be suspended from the wall or ceiling by
means of an optional mounting bracket (type MMB or MCMB)
which permits horizontal pivoting of the heater.
After the heater is installed, the louvers may be positioned
DO NOT MOUNT MERCURY TYPE THERMOSTAT
DIRECTLY ON UNIT. VIBRATION COULD CAUSE
HEATER TO MALFUNCTION.
MANUAL
RESET LIMIT
(FACTORY
INSTALLED
OPTION ONLY.) THE LIMIT SWITCH IS LOCATED INTER-
NALLY ON THE REAR OF THE HEATER. ON THE
MUH03 AND MUH05 MODELS, THE ACCESS TO THE
ALL BUILT-IN THERMOSTATS: IF THE HEATER IS USED TO
PREVENT PIPING OR LIQUIDS FROM FREEZING, AND IF
THE THERMOSTAT IS SET BELOW 45° F (7°C), THE FAN
MUST RUN CONTINUOUSLY.
CAUTION
TO PREVENT POSSIBLE OVERHEATING OR DAMAGE
DUE TO OVERHEATING, KEEP AT LEAST 5' (1524mm)
CLEARANCE IN FRONT OF HEATER. REFER TO TABLE 1
FOR SIDE, TOP, AND BACK CLEARANCE REQUIREMENTS.
CAUTION
THE HEATER MUST BE MOUNTED AT LEAST 7' (2134mm)
ABOVE THE FLOOR TO PREVENT ACCIDENTAL CONTACT
WITH THE FAN BLADE WHICH COULD CAUSE INJURY.
CAUTION
THE CEILING MOUNTING STRUCTURE AND THE
ANCHORING PROVISIONS MUST BE OF SUFFI-
CIENT STRENGTH TO SUPPORT THE COMBINED
WEIGHT OF THE HEATER AND MOUNTING BRACKET.
(SEE TABLE 4).
CAUTION
RESET BUTTON IS ON THE RIGHT SIDE (WHEN FAC-
ING REAR OF HEATER); ON ALL OTHER MODELS IT
IS NEAR THE TOP REAR OF THE HEATER.
THE MANUAL RESET LIMIT IS IN SERIES WITH THE
AUTOMATIC RECYCLING PROTECTOR (LIMIT). THE
MANUAL RESET LIMIT WILL NOT RESET UNTIL THE
HEATER HAS COOLED AND THE BUTTON IS
PUSHED IN.
IMPORTANT
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