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Introduction
Always consult your local Building Department regarding
regulations, codes or ordinances which apply to the
installation of a direct vent wall furnace.
Instructions to Installer
1. Installer must leave instruction manual with owner after
installation.
2. Installer must have owner fill out and mail warranty card
supplied with furnace.
3. Installer should show owner how to start and operate
furnace and thermostat.
Warning:
Any change to this furnace or its control can be
dangerous. This is a heating appliance and any panel,
door or guard removed for servicing an appliance
must be replaced prior to operating the appliance.
General Information
This furnace is design certified in accordance with American
National Standard/CSA Standard Z21.86b and CSA 2.32b-
2002 by the Canadian Standard Association, as a Gravity
Direct Vent Wall Furnace to be installed on an outside wall
according to these instructions.
Any alteration of the original design, installed other than
as shown in these instructions or use with a type of gas not
shown on the rating plate is the responsibility of the person
and company making the change.
Important
All correspondence should refer to complete Model No.,
Serial No. and type of gas.
Notice:
During initial firing of this unit, its paint will bake out
and smoke will occur. To prevent triggering of smoke alarms,
ventilate the room in which the unit is installed.
Input BTU/HR (KW)
Min.
Input BTU/HR (KW)
Efficiency Rating* (%)
Height (inches / mm)
Width
Depth
Input Vent Diameter
Output Vent Diameter (inches / mm)
*The efficiency rating of the appliance is a product thermal efficiency determined under continuous operating conditions and was
determined independantly of any installed system.
MV1XX-1-0603
INTRODUCTION
SPECIFICATIONS
Model
MV 145
20,000 (5.81)
6,900 (2.00)
72%
24.4 / 620
(inches / mm)
27.3 / 688
(inches / mm)
6.75 / 170
Gas Inlet
3/8" NPT
(inches / mm)
6 1/4" (160 mm)
3 1/2" (89 mm)
Installation in Residential Garages
Gas utilization equipment in residential garages shall be
installed so that all burners and burner ignition devices are
located not less than 18" (457 mm) above the floor.
Such equipment shall be located, or protected, so it is not
subject to physical damage by a moving vehicle.
Qualified Installing Agency
Installation and replacement of gas piping, gas utilization
equipment or accessories and repair and servicing of
equipment shall be performed only by a qualified agency. The
term "qualified agency" means any individual, firm,
corporation or company which either in person or through a
representative is engaged in and is responsible for (a) the
installation or replacement of gas piping or (b) the connection,
installation, repair or servicing of equipment, who is
experienced in such work, familiar with all precautions
required and has complied with all the requirements of the
authority having jurisdiction.
The installation must conform with local codes or, in the
absence of local codes, with the National Fuel Gas Code ANSI
Z223.1/NFPA 54* Natural Gas and Propane Installation Code,
CSA B149.1.
*
Available from the American National Standards Institute, Inc., 11 West
42nd St., New York, NY 10036.
High Altitudes
For altitudes/elevations above 2,000 feet (609.9 m), input
ratings should be reduced at the rate of 4 percent for each 1,000
(305m) feet above sea level. Canadian High Altitudes for
locations having an elevation above mean sea level between
2,000 feet (609.9 m) and 4,500 feet (1370m), use orifices as
indicated in the following table:
MOD
0-2000feet (0-610 m)
NG
MV 120
0.053" (1.35
)
0.035" (0.88
mm
MV 130
0.070" (1.77
)
0.043" (1.10
mm
MV 145
0.077" (1.95
)
0.053" (1.35
mm
MV 130
14,000 (4.07)
6,000 (1.74)
72%
24.4 / 620
27.3 / 688
6.75 / 170
3/8" NPT
4 3/4" (121 mm)
2 5/8" (67 mm)
2000-4500 feet (610-1370 m)
LPG
NG
LPG
)
0.050" (1.27
)
0.033" (0.83
mm
mm
)
0.066" (1.67
)
0.041" (1.03
mm
mm
)
0.072" (1.83
)
0.050" (1.27
mm
mm
MV 120
8,4
00 (2.44)
3,800 (1.10)
72%
24.4 / 620
21.2 / 538
6.75 / 170
3/8" NPT
3 9/16" (90 mm)
2 1/8" (54 mm)
Page 5
)
mm
)
mm
)
mm
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