NORDYNE Controls And HVAC Accessories Manual L0612180

User Manual: NORDYNE NORDYNE Controls and HVAC Accessories Manual NORDYNE Controls and HVAC Accessories Owner's Manual, NORDYNE Controls and HVAC Accessories installation guides

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Field

Replacement

Furnace

Vent

Transition

Kit, #904106

For M3RL Series Furnaces

IMPORTANT:

Read these instructions and the M3RL

Installation Instructions
the installation.

carefully before beginning

GENERAL
These instructions are primarily intended to assist qualified individuals experienced in the proper vent and combustion intake pipe installations of this appliance. This kit
is to be used for field replacement of a non-condensing
manufactured housing furnace with an M3RL series furnace. It may be used at elevations up to 8,000 feet above
sea level. M3RL furnace series are condensing gas
furnaces and must be vented with PVC or equivalent pipe
to prevent vent corrosion. Using the replacement vent
caps in this kit, you may easily install the vent and
combustion air intake pipes for the newfurnace utilizing an
existing roof jack as a chase. Some local codes require
licensed installation/service personnel for installation of
this type of equipment.

C.

To Remove Unnecessary Parts from the Old Roof
Jack: (see Figure 1)
1. Disassemble the top roof jack by unscrewing the
screws and connecting it to the upper combustion
air intake pipe.
2. Remove brackets from the combustion air intake
upper pipe. The brackets are 1/8" pop riveted and
must be removed by drilling them with a 1/8" drill
bit.
3.

Removetheinnerand outerflue pipes (6"diameter)
from the roof jack.
Note: Disassembly instructions may varydepending upon
the age and design of the roof jack.

f

Contents of Kit:
1.
2.
3.
4.
5.
6.

Installation Instructions for Field Replacement
Furnace Venting.
2- Replacement Vent Caps
2-2" RubberCouplings
4-2"DiameterClamps
2- 90° SPIG X HUB Elbows
6- #10 Sheet Metal Screws

Top Roof

<

Jack Assy

_,
/,,_7{/_,F!_';;];'_,_[

Ili

....

!!'Il!!

ZL WARNING!
The replacement furnace must be installed by a
qualified service technician in accordance with
these
instructions
and all codes
having
jurisdiction.
Failure to follow these instructions
could result in serious injury, property damage,
or death. The qualified
service
technician
performing this work assumes responsibility
for
this furnace installation.

INSTALLING
A.

B.

THE KIT

Screws

Roof
Flashing

...............

Rivets

Bracket ::::H::|

' 1I

Bracket

- -

I=

" _

Lower
Combustion
Air intake
Pipe

!
_
_

--...
"

_
L

Outer

.................
o2_;
:
_' _
o !! _ ?'

Upper
Combustion
Air intake

Bracket

Verify structural integrity of the roof flashing and
upperand lower combustion air pipes. NOTE: Do
not use this kit with existing roof jacks that are not
sound.
Replace the existing furnace with the new M3RL
furnace. (See M3RL Installation Instructions)

Flue

Pipe Assy

i

Figure 1. Typical Existing Roof Jack

Pipe

5" to

1
10" Min.

_-__-_*"'_

[

i

__

13"__

2" 90 ° Elbow
j/Large
Radius

----r_

I I_

\

I

i

Hub x Hub 2 Req,

::

Seal With

1/
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