90+
2-Stage &*9MPT & *9MPV
Variable Speed
SAFETY
REQUIREMENTS
/X
Recognize
safety
information.
This is the safety-alert
symbolL±_. _
. When
you see this symbol
on the furnace
and in instructions
or manuals
be alert
to the potential
for personal
injury.
Understand
the signal
words
DANGER,
WARNING,
or CAUTION.
These
words
are used with the safety-alert
symbol.
DANGER
identifies
the
most serious
hazards,
those
that will
result
in severe
personal
injury
or death.
WARNINGsignifiesahazardthatcouldresultinpersonalinjuryor
death.
CAuT__N
is used
t_ identify
unsafe
practices
that c_u_d
resu_t in min_r
pers_na_
injury
_r _r_duct
and pr__erty
damage.
Installing
and servicing
heating
equipment
can be hazardous
due to gas and electrical
components.
Only trained
and qualified
personnel
should
install,
repair,
or service
heating
equipment.
Untrained
service
personnel
can
perform
basic
maintenance
functions
such
as cleaning
and replacing
air filters.
All other
operations
must
be
performed
by trained
service
personnel.
When
working
on heating
equipment,
observe
precautions
in the literature,
on tags, and on labels
attached
to or shipped
with
the unit
and other
safety
precautions
that may
apply.
Follow
all safety
codes.
In the United
States,
follow
all safety
codes
including
the current
edition
National
Fuel
Gas Code
(NFGC)
NFPA
No.
54/ANSIZ223.1.
InCanada,
refer tothecurrent
editionofthe
NationalStandard
Canada
CAN/CGA-B149.1-
and.2-M91
NaturalGasand
Propane
InstallationCodes
(NSCNGPIC).
Wearsafetyglassesandworkgloves.
Havefireextinguisher
availableduringstart-upandadjustment
procedures
and service
calls.
These
instructions
cover
minimum
requirements
and conform
to existing
national
sta nda rds and safety
codes.
In some insta rices, these
instructions
exceed
certain
local codes
and ordinances,
especially
those
that may not have kept up with changing
residential
construction
practices.
We requre
these
instructions
as a minimum
for a safe installation.
Manufactured
by:
International
Comfort
Products
Corporation
(USA)
Lewisburg,
TN 37091
Table of Contents
1. Safe Installation Requirements .................
4
2. Installation ................................
5
3. Combustion & Ventilation Air ..................
8
4. Vent & Combustion Air Piping ................
10
5. Gas Supply and Piping ......................
21
6. Electrical Wiring ...........................
25
7. Ductworkand Filter ........................
26
8. Checksand Adjustments....................
30
9. FurnaceMaintenance .......................
32
10.Sequenceof Operation& Diagnostics..........
32
11.Concentric VentTermination.................
38
12.TechSupportand Parts ....................
41
FIRE OR EXPLOSION HAZARD
This furnace is not designed for use in mobile
homes, trailers or recreational vehicles.
Such use could result in death, bodily injury
and/or property
damage.
Printed inU.S.A.
LP1
12/2/2002
440 01 2113 (02)
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