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MAX 80°F
FRONT
RETURN
AHR
MHN60°F
A05004
--9
Fig. 4_Retum-Air
Temperature
For accessory
installation
details,
refer
to accesse D' installation
instructions
--@
,
CODES
AND
STANDARDS
Follow
all national
and local codes and standards
in addition
to
these
instructions°
The installation
must comply
with regulations
of the serving
gas supplier,
local building,
heating,
plumbing,
and
other
codes.
In absence
of local
codes,
the
installation
must
comply
with
the national
codes
listed
below
and all authorities
having jurisdiction.
In the United
States and Canada,
follow all codes and standards
for
the _bllowing:
Step
l--Safety
*
US: National
Fuel
Gas (ode
(NFGC)
NFPA
54-2002/ANSI
Z223.1 °2002 arid the Installation
Standards,
Warm Air Heating
and Air (onditioning
Systems
ANSI NFPA
90B
*
CANADA:
National
Standard
of Canada,
Natnral
Gas and
Propane
Installation
Code (NS(NGPIC)
CSA BI49J-00.
Step
2--General
Installation
*
US: NFG(
and the NFPA
90B. For copies,
contact
the National
Fire Protection
Association
Inc,
BatteD-march
Pad<
Quincy,
MA 02269;
or for only the NFG(
contact
the American
Gas
Association,
400 N. Capitol,
N.W.,
Washington
DC 20001
A manu_hctured
(Mobile)
home
installation
must con_brrn with
the Mam!/actured
h2)me
d'onstl'z¢ctior_
as_d &{fi.-t 3 ' Sta,c/ard
Tide
24
(iFR,
Part
3230,
or when
this
standard
is not
applicable,
the Standard
_br _l,Ian@tctz¢red
Hnme
l_Tst_d]ation
(.hIclmt/act_lred
D))me
Sites,
('omm_¢nitie.s,
and
Set-L_.s),
AXIST/A'C_' A225. l, an&or
(14A',( %-l-Z240,
liD" Serie.s 3/obiIe
Hom_,s'
*
CANADA:
NSCNGPI&
For a copy,
contact
Standard
Sales,
CSA International,
178 Rexdale
Boulevard,
Etobicoke
(Toronto),
Ontario,
M9W
IR3,
Canada.
Step
a--Combustion
and Ventilation
Air
*
US:
Section
8.3
of the
NFGC,
Air
for
(ombnstion
arid
Ventilation
*
CANADA:
Part 7 of d-ie NSCNGPIC,
Venting
Systems
and Air
Supply
_k}r Appliances
Step
4--Duct
Systems
*
US and (ANADA:
Air (onditioning
(ontractors
Association
(AC(A)
Manual
D, Sheet
Metal
and Air Conditioning
(7on-
tlactors
National
Association
(SMACNA),
or American
Soci-
ety of Heating,
Refrigeration,
and Air Conditioning
Engineers
(ASHRAE)
2001 Fundamentals
Handbook
Chapter
34.
Step
5--Acoustical
Lining
and Fibrous
Glass
Duct
*
US and (ANADA:
current edition
of SMACNA,
NFPA 90B as
tested
by UL Standard
181 for (;lass I Rigid
Air Ducts
Step
g--Gas
Piping
and Gas Pipe
Pressure
Testing
*
US: NFG(
chapters
2, 3, 4_ and 9 and national
phn'nbing
codes
In the state of Massachusetts:
This product
must
be installed
by a licensed
plumber
or gas
fitter.
When
flexible
connectors
are used,
the maxinmm
length
shall
not exceed
36 inches.
When lever type gas shutof_is are used they shall not exceed
36
inches.
CANADA:
NSCNGPIC
Parts
3, 4, 5, A, B, E, and H.
Step
7--Emectrical
Connections
*
US: National
Electrical
(ode
(NE()
ANSIiNFPA
70°2002
CANADA:
(anadian
Electrical
(ode
CSA
C22.1
ELECTROSTATIC
DISCHARGE
{ESD)
PRECAUTIONS
[NIT
DAMAGE
HAZARD
Faihn'e
to follow
this caution
may result
in damage
to unit
components.
Electrostatic
discharge
can
affect
electronic
components.
Take precautions
during
furnace
installation
and servicing
to
protect
d_e t:umace
electronic
control.
Precautions
will pre-
vent electrostatic
discharges
fiom
personnel
and hand
tools
which
are held during
the proce&re.
These precautions
will
help to avoid
exposing
the control
to electrostatic
discharge
by putting
d_e [:urnace, the control,
and the person at the same
electrostatic
potential.
1. Disconnect
all power
to the furnace.
Multiple
disconnects
may
be required.
DO NOT
TOU(H
THE
CONTROL
OR ANY
WIRE CONNE(TED
TO THE ( ONTROL
PRIOR
TO DIS-
(HARGING
YOUR
BODY'S
ELECTROSTATI(
CHARGE
TO GROUND.
2
Firefly
touch
a clean, unpainted,
metal
surface
of the fmTlace
chassis which
is close to the control.
Tools held in a person's
hand during
grounding
will be satisfactorily
discharged.
3. After
touching
the chassis
you
may
proceed
to service
the
control
or connecting
wires
as tong
as you do nothing
that
recharges
your body with static electricity
(fbr example;
DO
NOT
move
or shuffle
your feet, DO NOT
touch ungrounded
objects,
etc)
4
If you
touch
ungronnded
objects
(recharge
your bo@
with
static electricity),
firmly
touch
the unpainted
metal
surfi_ce of
the furnace
again be_bre touching
control
or wires.
5. Use this procedure
for installed
and urdnstalled
(ungrounded)
_i/rnaces
6. Befbre
removing
a new control
fiom
its container,
discharge
your
body's
electrostatic
charge
to ground
to protect
dae
control
from
damage.
If d_e control
is to be installed
in a
ii/mace,
_bllow items
1 through
5 be_bre bringing
the control
or yourself
into contact
with the furnace.
Put all used and new
controls
into containers
be_bre touching
ungrounded
objects.
7. An ESD service
kit (available
ti'om commercial
sources)
may
also be used to prevent
ESD damage.
INTRODUCTION
The model
58MSA
4-way
multipoise,
Gas-Fired,
Category
IV,
condensing
furnaces
are available
in model
sizes
ranging
in gas
input rates of 40,000
to 120,000
Bmh.
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