Sears N9MP2100J20B1, N9MP2050B12B1 manual Installation Requirements, Typical Upflow Installation

		Typical	Upflow	Installation
		Aluminum or non-rusting shield recommended.(See
		Vent TerminationShieldingfor dimensions).
				Coupling	on ends of
*8" Min. _l[q		_I_	Inlet Pipe (not	exhaust	pipe. Total
20'Max.
in same	_	_	used on Single	pipe & coupling out-
atmospheric	<_	__4t_	Pipe model)	side structure = 8"
zone

Installation Requirements

1.	Install	furnace		level.
2.	This furnace			is NOT to be used for temporary					heat of buildings
	or structures			under		construction.
3.	Install	the	vent		pipes		as short	as practical.	(See Gas		Vent
	Installation			section).
4.	Do NOT install				furnace		directly	on carpeting,	tile	or other	com-
	bustible material other than wood flooring.
5.	Maintain		clearance			for	fire safety and servicing.			A front	clear-
	ance of 30" is minimum for access to the burner, controls and

VentPipes MUSTbe

supported

/]in.

filter. See clearance requirements	in	Figure	3	or.
6. Use a raised base if the floor is	damp	or wet	at	times.

and Vertically me atmospheric

7. Residential garage installations require:

•Burners and ignition sources installed at least 18" (457 ram) above the floor.

* Increase minimum from 8" to 18" for cold climates (sustained temperatures below

0 ° F). 25-23-33

Typical Downflow Installation

See VentTermination

Shieldingin VentSection.	Coupling on	inside
	and outside	of wall

Furnace must be located or physically protected from pos- sible damage by a vehicle.

8.If the furnace is to be suspended from the floorjoists in a base- ment or a crawl space or the rafters in an attic, it is necessary to use steel pipe straps or an angle iron frame to attach the furnace. These straps should be attached to the furnace with sheet metal screws and to the rafters or joists with bolts. The preferred method is to use an angle iron frame bolted to the rafters or joists.

to restrain vent pipe

I

his

furnace

may

be

used

for

construction

heat provided

that all

_1

14'

*8" Min.

the

following

conditions

are

met:

InletPipe

_

[_

20' Max.

The

furnace is permanently

installed

with all electrical wir-

(not used on _

_

in same

ing,

piping,

venting

and

ducting

installed

according

to these

SinglePipe _

I,,,_ L,

atmospheric zone

model)

_

installation

instructions.

A return

air duct

is provided,

sealed

to the

furnace

casing,

and

terminated

outside

the

space

Vent Pip

MUST bq

containing

the furnace.

This

prevents

a negative

pressure

condition as created by the circulating air blower, causing a

support(

4orizonta

flame

rollout and/or

drawing

combustion

products

into the

and Vertically

Min.

structure.

Max.

same

•

The

furnace

is controlled

by a thermostat.

It may

not

be "hot

osphericzone

wired"

to provide

heat

continuously

to the structure without

thermostatic

control.

Clean outside air is provided for combustion. This is to mini- mize the corrosive effects of adhesives, sealers and other

construction materials. It also prevents the entrainment of

drywall dust into combustion air, which can cause fouling and plugging of furnace components.

* Increase minimum from 8" to 18" for cold climates (sustained temperatures

The

temperature

of

the

return air

to

the

furnace

is

no less

below O°F).

25-23-33a

than

55 ° F, with

no evening setback

or shutdown.

The

use

of

the

furnace

while

the

structure

is

under

construction

is

deemed to

be

intermittent

operation

per

our

installation

in-

structions.

CARBON MONOXIDE POISONING HAZARD.

Failure to follow safety warnings exactly could result in serious injury, death, or property damage.

Do NOT operate furnace in a corrosive atmosphere containing chlorine, fluorine or any other damaging chemicals, which could shorten furnace life.

•The air temperature rise is within the rated rise range on the furnace rating plate, and the firing rate has been set to the rating plate value.

•The filters used to clean the circulating air during the

construction process must be either changed or thoroughly cleaned prior to occupancy.

Refer to

3.

Combustion

& Ventilation

Air section,

Contaminated

Combustion

Air for combustion

air

•

The

furnace,

ductwork and filters

are cleaned

as

necessary

evaluation

and remedy.

to

remove

drywall dust

and construction

debris

from all

HVAC system components

after

construction

is completed.

44001 102004 [_