CSA Requirements in USA
Installation of gas duct heaters must conform with local
building codes or, in the absence of local codes, with the
current edition of ANSI−Z223.1, National Fuel Gas Code.
Installation in aircraft hangers must be in accordance
with the current edition of ANSI/NFPA No. 409,
Standard for Aircraft Hangers.
Installation in parking structures must be in accordance
with the current edition of ANSI/NFPA No. 88A,
Standard for Parking Structures.
Installation in repair garages must be in accordance with
the current edition of ANSI/NFPA No. 88B, Standard for
Repair Garages.
Authorities having jurisdiction should be consulted
before installation. Air for combustion and ventilation
must conform to the methods outlined in the current
edition of ANSI Z223.1, Section 5.3, Air for Combustion
and Ventilation, or applicable provisions of local
building codes.
The National Fuel Gas Code (ANSI-Z223.1) is
available from:
American National Standard Institute Inc.
11 West 42nd Street
New York, NY 10036
building codes or, in the absence of local codes, with
the current edition of CSA-B149 installation compliance
codes. All electrical wiring and grounding for the unit
must also comply with the current edition of CSA
C22.1, Canadian Electrical Code.
These duct heaters are CSA-certified for clearances to
combustible material listed on the rating plate and table 3.
Adequate clearance must be provided around the
appliance and around air openings into the combustion
chamber. Provision must be made for service
accessibility.
NOTE
− Fire protection clearances may be exceeded
to provide additional space for service and accessibility.
GARAGE / WAREHOUSE INSTALLATIONS
1 − In a storage area, clearance from the heater to
combustible materials must be such that the
combustible material must not attain a
temperature above 160°F (71°C) during
continuous operation of the unit.
WARNING
These units are CSA international design−certified. These
duct heaters are certified for clearances to combustible
material as listed in table 1 and on unit rating plate.
Accessibility and service clearances must be observed
in addition to fire protection clearances.
All electrical wiring and grounding for unit must be in
accordance with the regulations of the current edition of
ANSI/NFPA No. 70, National Electric Code.
The National Electric Code is available from:
National Fire Protection Association
1 Batterymarch Park
PO Box 9101
Quincy, MA 02269−9101
CSA Requirements in Canada
These instructions are intended only as a general guide
and do not supersede local codes in any way. Authorities
having jurisdiction should be consulted before installation.
The installation must conform with local
2 − Maintain an 8−foot (2.5 m) minimum clearance
from the floor to the bottom of the heater. Refer to
the current edition of CSA-B149 installation
compliance codes.
AIRCRAFT HANGER
1 − In an area where aircraft are housed or serviced,
a 10-foot (3m) minimum clearance from the
highest surface of the aircraft to bottom of the
heater must be maintained.
2 − In other areas, an 8-foot (2.5m) minimum
clearance from the floor to bottom of heater must
be maintained.
TABLE 1
UNIT CLEARANCES TO COMBUSTIBLE MATERIALS
Top
Sides
Bottom
Rear
Flue
Model
in
mm
in
mm
in
mm
in
mm
in
mm
HED−75
1
25
6
152
0
0
18
457
6
152
HED−100
6
152
6
152
0
0
18
457
6
152
through −300
Combustible materials that are affected by
exposure to temperatures less than 160°F
(plastics, plastic wrap, styrofoam, cardboard,
etc.) must be stored well away from this
heater. Discharge air temperatures for these
units can approach 200°F.
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