2
MINIMUM CLEARANCE TO
FLOORBOARDS, WALLS & SIMILAR COMBUSTIBLE BUILDING MATERIALS*
MUST BE PROVIDED THE FULL LENGTH AND WIDTH OF UNIT
HORIZONTAL
TOP
----1/2˝
BOTTOM
--3/16˝
SIDES
----1˝
REAR
----1/2˝
VERTICAL
TOP
----1/2˝
BOTTOM
------0˝
SIDES
----1˝
REAR
----1/2˝
Spacing of 1/4˝ to ducting within 3 feet of furnace must be provided
unless UL listed wire bound vinyl ducts are used. All ducting material
should be rated for continuous use at 200˚F.
NOTE
: Clearances are specifically for plywood or similar building materi-
als surrounding furnace (i.e. furnace should
NOT
be located under
furniture or in a closet space where clothing or other material
could be located.)
NOTE
: Efficiency rating is a thermal rating determined under continuous
operating conditions, independent of any installation. Efficiency
rate is given at 77% minimum, actual efficiency rating may be
higher.
WARNING
CARBON MONOXIDE POISONING
•
Furnace must be installed and vented to these instructions.
•
Improper installation, adjustment, alteration, service or mainte-
nance can cause injury or property damage.
•
Improper installation location may cause furnace to produce neg-
ative pressure, affecting combustion air or venting of other appli-
ances.
CRITICAL INSTALLATION WARNINGS
•
DO NOT
install furnace on material that restricts return air, like carpet
or any soft material such as vinyl.
•
DO NOT
install furnace where clearance to combustibles cannot be
maintained.
•
DO NOT
modify furnace in any way.
•
DO NOT
alter furnace for a positive grounding system.
•
DO NOT
HI-POT furnace unless electronic ignition system (circuit
board) has been disconnected.
•
DO NOT
use battery charger to supply power to DC model furnace
even when testing.
•
DO NOT
use 120 volt AC current with DC models.
•
DO NOT
use furnace cabinet area as a storage compartment.
•
DO NOT
vent furnace with venting system serving another appliance.
•
DO NOT
vent furnace to an outside enclosed porch area.
•
DO NOT
use for temporary heating of buildings or structures under
construction.
• Protect building materials from degrading from flue gas exhaust.
• Protect furnace electrical components from water.
USA AND CANADA
-
FOLLOW ALL APPLICABLE STATE AND LOCAL CODES
-
IN THE ABSENCE OF LOCAL CODES OR REGULATIONS
,
REFER TO CURRENT STANDARDS OF
:
•
Recreation Vehicles ANSI A119.2/NFPA 501C.
•
National Fuel Gas Code ANSI Z223.1 and/or CAN/CGA B149
Installation Codes
•
Federal Mobile Home Construction & Safety Standard, Title 24 CFR,
part 3280, or when this Standard is not applicable, the Standard for
Manufactured Home Installations (Manufactured Home Sites,
Communities and Set-Ups), ANSI A255.1 and/or CAN/CSA-Z240 MH
Series, Mobile Homes.
•
Ground - National Electrical Code ANSI/NFPA No. 70 and/or CSA C22.1
•
Park Trailers ANSI 119.5
NOTE
: The direct high voltage spark ignition generates a radio frequency
that could cause interference with other microprocessor based
equipment. Locate equipment at least five feet (5’) from furnace
location. If this distance cannot be maintained, purchase MPD
37773 (a shielded high voltage lead).
WARNING
CARBON MONOXIDE POISONING
•
Properly seal door, adjust draft cap to prevent carbon monoxide
from entering coach.
•
DO NOT
draw
combustion air from living area.
DO NOT
vent exhaust
air into the living area or an enclosed porch.
Return air is supplied through openings in furnace casing. All return air
passages must be kept clear for furnace to function properly. Refer to
MINIMUM CLEARANCE TO FLOORBOARDS
,
WALLS
& SIMILAR COMBUSTIBLE BUILDING
MATERIAL
. The total unobstructed return air opening size(s) must
NOT BE
LESS
than specified in
SPECIFICATIONS
-
MINIMUM RETURN AIR
. Failure to meet
minimum return air requirements nullifies furnace warranty.
STANDARD FURNACE INSTALLATION
General Installation -
LOCATION
• Install furnace through an exterior wall.
•
DO NOT
install furnace near tilt-out rooms, slide-outs, doors or
other projections that could obstruct furnace exhaust.
• Locate furnace near midpoint of coach for single furnace applica-
tions.
•
DO NOT
install vent in areas where projections or door openings
come within 6˝ of vent tube opening.
•
DO NOT
install furnace in an area where wires, pipes, or other
objects will interfere with the installation or operation of furnace.
•
DO NOT
directly install furnace on material that restricts return air,
such as directly on carpet, or soft material (like vinyl).
• If you must install furnace on carpet or soft material, install fur-
nace on cleats, or on a wood or metal panel extending the full
width and depth of furnace plus minimum clearances to com-
bustibles.
•
DO NOT
us petroleum or citrus type cleaners on plastic parts, as
damage may occur.
• The furnace must always be installed level (front to back, side to
side) to prevent water intrusion into the interior.
WALL CUTOUT
RECOMMENDED MAXIMUM WALL THICKNESS
2-1/2˝
DO NOT OVERSIZE HOLE
-
OVER SIZING CAN RESULT IN WATER LEAKAGE
EXTERIOR WALL CUTOUT
A
B
C
RECESS BEZEL
(
FIG
1-1A
)
19-1/2˝
9-7/8˝
*
*To cut rounded corners: with radius blocks 2-1/8˝ radius
without radius blocks a 45˚ angle
