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Optional Accessory
Units require a conversion kit when the unit is to be used
with LP/propane gas. The kit is ordered separately. See
Engineering Handbook.
Requirements in USA
Installation of gas unit 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.
These units are approved for residential garage or
non-confined living space applications. For installation
in a residential garage or non-confined living space, unit
must be installed so that burners and ignition source are
located no less than 18” (457mm) above floor. Heater
must be located or protected to avoid physical damage
by vehicles. Refer to the current edition of ANSI Z223.1,
National Fuel Gas Code.
Authorities having jurisdiction should be consulted before
installation. Air for combustion and ventilation must con-
form 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
These unit heaters are CSA International design-certified.
These unit heaters are certified for installation to combus
-
tible 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 ac-
cordance 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
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 building codes or,
in the absence of local codes, with the current edition of
CSA-B149 installation compliance codes. All electrical wir-
ing and grounding for the unit must also comply with the
current edition of CSA C22.1, Canadian Electrical Code.
These unit heaters are CSA-certified for the installation
clearances listed on the rating plate and in table 1.
Adequate clearance must be provided around the appli-
ance and around air openings into the combustion cham-
ber. Provision shall 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 heaters to
combustible materials must be such that the
combustible material must not attain a temperature
above 160°F (71°C) by continuous operation of the
unit.
WARNING
Combustible materials that are affected by exposure to
temperatures LESS than 160°F or 71°C (plastics, plastic
wrap, styrofoam, cardboard, etc.) must be stored well
away from this heater. Discharge air temperatures for
these units can approach 250°F or 121°C.
2 - Maintain an 8-foot (2m) minimum clearance from the
floor to the bottom of the heater. Refer to the current
edition of CSA-B149 for 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 (2m) minimum clearance
from the floor to bottom of heater must be maintained.
3 - Heaters should be located so that they are protected
from damage from aircraft or other appliances needed
for servicing of aircraft. Refer to requirements of the
enforcing authorities.
RESIDENTIAL
These units are approved for residential garage or
non-confined living space applications. For installation
in a residential garage or non-confined living space, unit
must be installed so that burners and ignition source are
located no less than 18” (457mm) above floor. Heater
must be located or protected to avoid physical damage by
vehicles. Refer to the current edition of CSA-B149 for in-
stallation compliance codes. In a confined area, the heat
-
er must be installed in accordance with the current edition
of CSA-B149 installation compliance codes. Be sure to
check with local codes and ordinances for additional re-
quirements .
Summary of Contents for LS25 Series
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