Modine Manufacturing DJE Installation And Service Manual page 3

I I N N S S T T A A L L L L A A T T I I O O N N
In the U.S., the installation of these units must comply with the
"National Gas Code," ANSI Z223.1, latest edition (also known as
NFPA 54) and other applicable local building codes.
In Canada, the installation of these units must comply with local
plumbing or waste water codes and other applicable codes and
with the current code CAN/CGA-B149.1, "Installation Code for
Natural Gas Burning Appliances and Equipment" or CAN/CGA-
B142.2, "Installation Code for Propane Burning Appliances and
Equipment".
1. All installation and service of these units must be performed
by a qualified installation and service agency only as defined
in ANSI Z223.1, latest edition or in Canada by a licensed gas
fitter.
2. This unit is certified by A.G.A. and C.G.A., with the controls
furnished. For replacement parts, submit the complete model
and serial numbers shown on rating plate on the unit. Modine
reserves the right to substitute other authorized controls as
replacements.
3. In applications where high humidity and condensation can be
expected, or anticipated, it is recommended that stainless
steel heat exchangers, burners and condensate drip pans are
specified. Such applications can include make-up air systems
where entering air temperatures to the heating equipment can
be expected to be below 40°F or applications where duct
furnaces are used downstream of air-conditioning coils. In
these applications stainless steel will often provide longer
furnace life than aluminized steel.
4. Information on controls is supplied separately.
5. Modine duct furnaces use the same burner for natural and
propane gases.
L L o o c c a a t t i i n n g g F F u u r r n n a a c c e e
! CAUTION
Units must not be installed in potentially explosive,
flammable or corrosive atmosphere. Units must be installed
such that the gas ignition control system is not directly
exposed to water spray, rain or dripping water.
1. Do not locate any gas-fired duct furnace in areas where
chlorinated or acid vapors are present in the atmosphere.
2. When locating the furnace, consider general space and
heating requirements, availability of gas and proximity to vent
locations.
3. Avoid installation in drafty locations. Drafts cause burner
flames to impinge on heat exchangers which will shorten their
life.
4. Duct furnace is designed for installation on non-combustible
floors. Allow at least a 6" clearance from anything
combustible. Furnace wall insulation is recommended for any
close clearances. Provide ample space for operation of draft
diverter.
5. Provide clearance on sides of furnace to permit withdrawing
burner for service.
6. Duct furnace must be installed on the positive pressure side
of the air-circulating blower.
7. Units installed downstream of cooling systems may
experience condensation, therefore, provisions should be
made for disposal of condensate. Means have been provided
in the bottom pan of the unit to accommodate a condensate
drain line connection flange.
8. Modine duct furnaces are designed for use in heating
applications with ambient temperatures between 32°F and
90°F. If an application exists where ambient temperatures can
be expected to fall outside of this range, contact factory for
recommendations.
C C o o m m b b u u s s t t i i o o n n A A i i r r R R e e q q u u i i r r e e m m e e n n t t s s
Units installed in tightly sealed buildings or confined spaces
should be provided with two permanent openings, one near the
top of the enclosure and one near the bottom. Each opening
should have a free area of not less than one square inch per
1,000 BTU per hour of the total input rating of all units in the
enclosure, freely communicating with interior areas having, in
turn, adequate infiltration from the outside.
To prevent premature heat exchanger failure, do not locate
ANY gas-fired unit in areas where chlorinated, halogenated
or acid vapors are present in the atmosphere.
F F u u r r n n a a c c e e S S u u s s p p e e n n s s i i o o n n
! CAUTION
Do not locate unit closer to combustible materials than 6" to
sides, top and flue.
Furnace wall insulation is recommended for any close
clearances. Do not enclose draft diverter in duct.
Provide uniform and sufficient air flow over heat exchanger.
Provide clearance on sides of furnace to permit withdrawing
burner for service.
Be sure the means of suspension is adequate to support the
weight of the unit. For proper operation, the unit must be installed
in a level horizontal position. Clearances to combustibles as
specified above must be strictly maintained.
1. Four 1/2" - 13NC tapped holes in top of furnace are provided
to accept ceiling hangers. To assure that flames are directed
into the center of the heat exchanger tubes, the furnace must
be supported in a vertical position. Use a spirit level to ensure
that unit is suspended correctly.
2. NOTE: A pipe hanger adapter kit, shown in Figure 1, is
available as an accessory from Modine. One kit consists of
two dripped 3/4" IPS pipe caps and two 1/2 - 13 x 1-3/4" cap-
screws to facilitate threaded pipe suspension. Two kits are
required for mounting all duct furnace models.
F F i i g g u u r r e e 1 1 - - S S u u s s p p e e n n s s i i o o n n M M e e t t h h o o d d s s
(Threaded Rod Suspension)
(Suspension with Pipe Adaptor Kit)
3 3