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Failure to understand and follow these instructions and the
"WARNING" notes therein may result in serious personal injury from
electrical shock, or from the heater falling due to faulty installation.
This heater is not intended for use in hazardous
atmospheres where flammable vapors, gases, liquids
or other combustible atmospheres are present as
defined in the National Electrical Code. Failure to
comply can result in explosion or fire. For these appli-
cations see Product Data Sheet PDS CXH-EP (PF305).
ELECTRIC SHOCK HAZARD. Disconnect all power
before installing or servicing heater. Failure to do so
could result in personal injury or property damage.
Heater must be installed by a qualified person in accor-
dance with the National Electrical Code, NFPA 70.
ELECTRIC SHOCK HAZARD. Any installation involving
electric heaters must be performed by a qualified per-
son and must be effectively grounded in accordance
Heater Location Instructions:
Arrange units so their discharge air streams:
A. Are subjected to minimum 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 thermostat on interior partition walls or posts away from
cold drafts, internal heat sources and away from heater discharge air
streams.
Small rooms can be heated by one unit heater. Where two walls are
exposed, the heater should be mounted as shown in Figure A.
NOTICE — These heaters are designed for wall and ceiling mount.
Other modes of mounting voids factory warranty.
Mounting HD3D Heaters with the Standard "L" Brackets
Supplied with Heater
Vertical Airflow
1. Height above floor
A. It is recommended that heater only be used with ceiling heights
of 12 feet or greater. Minimum spacing to ceiling is 12 inches,
use 1/2" thread stock (supplied by others) as shown in Figure 2.
B. Mimimum mounting height is 10 feet from floor to bottom of
heater (Figure 2)
2. Spacing to walls
A. Side of case to walls 18". (See Figure 2.)
Horizontal Airflow (Non-Swiveling)
1. Height above floor
A. In areas where ceiling height is more than 12 feet, recommended
mounting height is approximately 10 feet to underside of heater.
B. For ceiling heights of 12 feet or less, maximum mounting
height is determined by use of the mounting bracket offered for
these heaters. Minimum spacing to ceiling is 9". (See Figure 1.)
C. In either case the minimum mounting height is 7 feet from
floor to bottom of heater. (Figure 1)
2. Spacing to adjacent walls (See Figure 1).
A. Rear of case to back wall 1-1/2" minimum.
B. Side of case to side wall 8" minimum.
WARNING
with the National Electrical Code to eliminate shock
hazard.
Do not mount mercury type thermostat directly on unit. Vibration
could cause heater to malfunction.
The heater must be mounted at least 7' above the floor to avoid
accidental contact with the heating elements or fan blade which
could cause injury.
Keep at least 5' clearance in front of the heater. Refer to
Figure 1 for side, top and back clearance requirements.
The ceiling mounting structure and the anchoring provisions
must be of sufficient strength to support the combined weight of
the heater and mounting bracket.
The wall or mounting surface, and the anchoring provisions
must be capable of supporting the combined weight of the heater
and the mounting brackets cantilevered from the mounting sur-
face.
Fan blade rotation must be checked. If airflow is not moving
out through the louvers, interchange any two of the three customer
power leads on three-phase units only.
GENERAL
Large rooms require multi-unit installations. Number and capaci-
ty of units will be determined by volume of building and square feet
of floor area to be heated. Arrange units to provide perimeter air cir-
culation where each unit supports the air stream from another.
MOUNTING
Ceiling
9" Min.
B
C
Floor
Figure 1
kW
2.5-7.5
10.0-20.0
25.0-39.0
2
Figure A
Ceiling
12"
Min
1-1/2"
Wall
W W all
A
10' Min.
Floor
Figure 2
Dimensions (In.)
A
B
13-1/2
24-1/2
17-1/4
28
21-1/4
32-1/4
Wall
Wal
18"
Min.
'
C
15
15-1/8
19-1/2
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