Shipping - Mr. Heater MHU 50 Operating Instructions And Owner's Manual

SHIPPING

The heater is completely assembled. Installation instructions,
two mounting brackets (shipped loose), and a flue transition are
included. Check the unit for shipping damage. The receiving party
should contact the last carrier immediately if any shipping damage
is found.
REQUIREMENTS – CSA IN THE 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 hangers must be in accordance with the
current Standard for Aircraft Hangers ANSI/NFPA No. 409.
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.
These units are approved for residential applications. 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. 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 1 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:
National Fire Protection Association
1 Batterymarch Park
PO Box 9101
Quincy, MA 02269-9101
4
Compact Unit / Utility Heater
TABLE 1
UNIT CLEARANCES
Top
in mm in
1 25 1
Bottom
in mm in
0 0 18
*Except for listed clearance thimbles.
REQUIREMENTS – 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 table1.
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.
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
AIRCRAFT HANGER:
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.
1. In an area where aircraft are housed or serviced, 10'
minimum clearance from highest surface of aircraft to
bottom of the heater must be maintained.
2. In other areas, 8' minimum clearance from the floor to
bottom of heater must be maintained.
3. Heaters should be located so as to be protected from damage
from aircraft or other appliances needed for servicing of
aircraft. Refer to requirements of the enforcing authorities.
Operating Instructions and Owner's Manual
Sides Access Panel
mm in mm
25 18 457
Rear Single Wall Vent*
mm in mm
456 6 152