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SHIPPING
The heater is completely assembled. Check the unit for shipping
damage. The receiving party should contact the last carrier
immediately if any shipping damage is found.
APPLICATIONS
This is not an explosion proof heater. This heater may not be used
in a Class 1 or Class 2 Explosive Environment. Consult your local fire
marshal, insurance carrier, and other authorities for approval if the
proposed installation is in question.
COMMERCIAL/INDUSTRIAL
The heater is designed and certified for use in industrial and
commercial buildings, such as warehouses, manufacturing plants,
aircraft hangars, and vehicle maintenance shops. For maximum safety,
the building must be evaluated for potential problems before installing
the heater system. This unit is certified for use as furnished by the
manufacturer. Do not alter the fan or operate motors at a reduced
speed.
CAUTION: Installation of restrictive devices to the inlet or
outlet of the fan motor may result in premature failure of the
exchanger pipe, overheating of the appliance, or damage to
the components. Do not attach ductwork, air filters, or poly-
tubes to any Mr. Heater unit heater.
STANDARDS, CERTIFICATIONS, AND
GOVERNMENT REGULATIONS
Installation of this gas-fired heater must conform with all applicable
local, state, and national specifications, regulations, and building
codes. Contact the local building inspector and/or fire marshal for
guidance.
In the absence of local codes, the installation must conform to the
latest edition of:
CSA IN USA
Installation of gas unit heaters must conform with local building codes
or, in the absence of local codes, with the current National Fuel Gas
Code ANSI Z223.1.
Installation in aircraft hangars must be in accordance with the current
Standard for Aircraft Hangars ANSI/NFPA No. 409.
Installation in parking structures must be in accordance with the
current Standard for Parking Structures ANSI/NFPA No. 88A.
For installation in a residential garage these units must be installed so
that the bottom of the heater is located no less than 8 feet (2.438m)
above floor. Heater must be located or protected to avoid physical
damage by vehicles. Refer to the National Fuel Gas Code, ANSI Z223.1,
current edition.
Authorities having jurisdiction should be consulted before NFPA
installation. Air for combustion and ventilation must conform to the
methods outlined in ANSI Z223.1, section 5.3, Air for Combustion
and Ventilation, or applicable provisions of local building codes. ANS
Z83.8 / CSA 2.6 is the standard for Gas Unit Heater Construction. The
National Fuel Gas Code is available from:
American National Standard Institute Inc.
11 West 42nd Street
New York, NY 10036
These units are CSA International design certified. These unit heaters
are certified for installation to combustible material as listed in Table
3 and on unit rating plate. Accessibility and service clearances must be
observed in addition to fire protection clearances.
All electrical wiring and ground for unit must be in accordance with
the regulations of the current National Electric Code ANSI/No. 70.
The National Electric Code is available from:
CSA IN CANADA
The 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 CSA B149.1, Natural Gas and Propane Installation Code. All
electrical wiring and grounding for the unit must also comply with the
Canadian Electrical Code CSA C22.1, current edition.
These heaters are CSA International certified for the clearances to
combustible material listed on the rating plate and Table 3. Provide
adequate clearance around air openings into the combustion
chamber, clearances from combustible material, and provisions for
accessibility and for combustion and ventilation air supply. Provision
shall be made for service accessibility to the heater. Note that fire
protection clearances may be exceeded to provide additional space for
service and accessibility. CAN/CGA B149.1-10 is the code for Natural
Gas and Propane Installation.
Copies of these Standards can be viewed or purchased at www.nfpa.
org or www.scc.ca.
GARAGE INSTALLATIONS
Installation in parking structures must be in accordance with the
current Standard for Parking Structures ANSI/NFPA No. 88A.
Installation in repair garages must be in accordance with the current
Standard for Repair Garages ANSI/NFPA No. 88B.
1. In a storage area, clearance from heaters to combustible materials
must be such that the material shall not attain a temperature above
160�°F by continuous operation of the unit.
2. Eight foot minimum clearance from the floor to the bottom of the
heater must be maintained. Refer to the CSA B149.1, Natural Gas
and Propane Installation Code.
Canada: Refer to CAN/CGA B149.1: Installation Codes for Gas Burning
Appliances and applicable Standards for Public Garages.
Guidelines:
• Heaters must not be installed less than 8 ft. (2.4 m) above the
floor. Minimum clearances to combustibles must be maintained from
vehicles parked below the heater.
• When installed over hoists, minimum clearances to combustibles
must be maintained from the upper most point of objects on the
hoist.
AIRCRAFT HANGAR INSTALLATIONS
Installation of gas unit heaters must conform with local building codes
or, in the absence of local codes, with the current National Fuel Gas
Code ANSI Z223.1.
4
Large Unit Heater
Operating Instructions and Owner's Manual
National Fire Protection Association
1 Batterymarch Park
PO Box 9101
Quincy, MA 02269-9101
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