Carrier 120 Series Instructions and recipes

58CNA
Series 120
NuMtipoise OiMFurnace
\isitx__ _.carrier.com Installation, Start-up,
and Operating tnstructions
HEATUNG & COOUNG
NOTE: Read the entire instruction manual be%re starting the
installation
This symbol --> indicates a change since last issue.
TABLE OF CONTENTS
SAFETY CONSIDERATIONS ..................................................... 1
INTRODUCTION .......................................................................... 2
LOCATION .................................................................................... 3
General ...................................................................................... 3
Location Relative to Cooling Equipment ................................ 3
INSTALLATION ........................................................................... 3
Air fPr Combustion and Ventilation ........................................ 3
Geneial ...................................................................................... 4
Unconf]ned Space ..................................................................... 4
( onf]ned Space ......................................................................... 4
All Air t_'om Inside the Structure ....................................... 4
All Air from Outside of Structure ...................................... 5
Duct Work Recommendations ..................... 5
Venting ......................................... 5
Oil Burner ..................................... 6
Oil Connections ................................ 6
Barometric Draft Control ......................... 6
Electrical Connections ............................ 6
Horizontal or Downf]ow Installation .................. 7
Filters ......................................... 7
START-UP, ADJUSTMENT, AND SAFETY CHECKOUT 7
Operational Checkout ............................. 7
Combustion Check ................................ 7
Fan Adjustment Check ........................... l0
Limit Control Check ............................... 10
For Year-Round Air Conditioning .................... i0
Heating ......................................... l 0
Cooling ........................................... 10
Constant Blower Switch ........................... 10
MAINTENANCE ................................... 11
General ......................................... 11
Oil Burner .......................................... 1l
Heat Exchanger and Flue Pipe ....................... i 1
Blower Removal ................................ 11
SAFETY CONSJDERAT{ONS
FOR YOUR SAFETY
DO NOT STORE OR USE GASOLINE OR OTHER
FLAMMABLE VAPORS AND LIQUIDS IN THE
VICINITY OF THIS OR ANY OTHER APPLIANCE.
DO NOT ATTEMPT TO START THE BURNER
WHEN EXCESS OIL HAS ACCUMI_ LATED, WHEN
THE FURNACE IS FULL OF VAPOR, OR WHEN
THE COMBUSTION CHAMBER IS VERY HOT
O0o
t_ oq
Fig. 1--580MA Multipoise OH Furnace
A97247
For use with grade 1 or 2 Fuel Oil. Do not use Gasoline,
Crankcase Oil, or any Oil containing Gasoline! Failure to
fbllow this warning could lead to sooting, fire, explosion,
and/or severe bodily harm.
Never bum garbage or paper in the heating system and never
leave rags, paper, or any flammable items around d_e unit
Failure to fbllow this caution will result in minor unit or
property damage
These instlq./ctions are intended to be used by qualified
personnel who have been trained in installing this type of
furnace. Installation of this f_amace by an unqualified person
may lead to equipment damage and/or a hazardous condition
which may lead to bodily ham_.
All local and national code requirements governing installation of
oil buruing equipment, wiring, and flue connections must be
followed. Some of the codes (issued by the Canadian Standards
Association, d'*e National Fire Protection Agency, and/or d'm
American National Standards Institute) that may be applicable are:
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
PC 101 Catalog No 535-80123 Printed in U.S.A. Form 58CMA-5SI Pg 1 11-03 Replaces: 58CMA-4SI

- A
i _ 7_
B
L
-----_ 3" _,_--------- E --------------_
fi!i!i!b
19.(%
IIII
r
i
'-- TOP KNOCK-OUT
I __ FOR JDIAM VENT
20"
--G-q
KNOCK-OUT BOTH SIDES- 7
FOR JDIAM VENT/
J _ii .............................../
_ y II
',)) _ OIL INLET
_JA_'._" (BOTH SIDES)
i , ,EgE% O'Ays
_- ..... \ / i II (BOTH SIDES)
] ""---_L -- rq_ _ .88 DIAM TYP
K
UNIT SIZE
105o12
t20-20
A
35
39-1/2
B
48-3/4
53
Dimensions (IN.)
C D E F G
30-1/4 16-5/8 20 22 12
32-1/4 18-3/4 24 28 12-9/32
Fig. 2--DimensionN Drawing
H
14
16
J
5
6
A98037
K L
1-1/2 1-3/4
1-5/8 1-1/2
INSTALLATION OF OIL
ANSI/NFPA 81: BURNING EQUIPMENT
ANSlINFPA 211: CHIMNEYS, FIREPLACES, VENTS,
AND SOLID FUEL BURNING APPLIANCES
WARM AIR HEATING AND AIR
ANSlINFPA 90B: CONDITIONING SYSTEMS
ANSl/NFPA 70: NATIONAL ELECTRICAL CODE
CSA B139: INSTALLATION CODE FOR
OIL BURNING EQUIPMENT
CA8 C22.1: CANADIAN ELECTRICAL CODE
Only d-ie latest issues of these codes should be use& and are
available l_'om either _he National Fire Protection Agency, Bat=
teryrnarch Park, Quincy, MA 02269 or The (anadian Standards
Association, 178 Rexdale Bird, Rexdale, Ontario M9W 1R3
Recognize safety irRormation. This is the safety°alert symbol z_
When you see this symbol on the furnace and in instructions or
manuals, be alert to the potential for personal injury.
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Understand the signal words DANGER, WARNING, CAUTION
and NOTE. These words are used with the safety-alert symbol.
DANGER identifies the most serious hazards which will result in
severe personal injury or death. WARNING signifies a hazard
which could result in personal injury or death CAUTION is used
to identify unsafB practices which would result in minor personal
inju_ or product and property damage NOTE is used to highlight
suggestions which will result in enhanced installation, reliability,
or operation.
INTRODUCTION
)'he model 58CMA Furnaces are available in 2 sizes. Each size
unit is capable of 3 heat/airflow combinations by a simple nozzle
change. Unit 105=12 covers inputs of 70,000, 91,000, arid 105,000
Bmh, and unit 120o20 covers inputs of 119,000, 140,000 arid
154,000 Btuh This eliminates the need to stock 6separate units
This furnace is a multipoise unit. It may be installed in the upflow,
downflow or horizontal configuration.
The [_l_rnace is shipped as a packaged unit, complete with burner
and controls. It requires a line voltage (115 vac) connection to
control box, a thermostat hook-up as shown on wiring diagram, oil
line connection(s), adequate duct work_ and connection to a
properly sized vent.

Table 1--Minimum Clearances To Combustib{e Materials (In.)
UNIT APPLICATION UPFLOW DOWNFLOW HORIZONTAL
Furnace 0 2 2
Sides Supply Plenum and Warm-Air Duct Within 6 ft
of Furnace 1 2 1
Back Service Clearance 0 1 0
Furnace Casing or Plenum 2 2 2
Top Horizontal Warm-Air Duct Within 6 ft of
Furnace 2 2 3
Bottom 0 0* 0*
FJue Horizontally or Below Pipe 4 4 4
Pipe Vertically Above Pipe 9 9 9
Front 8 8 24
* Use approved subbase for combustible floor.
NOTE: Adequate service clearances should be provided over and above these dimensions as required
The air handling capacity of this furnace is designed %r cooling
airflow. Rot'or to Table 12 _br expected airflows at various external
duct static pressures.
LOCATION
Step l--General
This t:urnace is not water tight and is not designed fbr outdoor
installation. This t:urnace shall be installed in such a manner
as to protect electrical components tiom water. Outdoor
installation would lead to a hazardous electrical condition and
to premature _;amace _hilure.
Do not use this t'urnace as a construction heater. Use of this
furnace as a construction heater exposes furnace to abnomxa]
conditions, contaminated combustion air, and tack of air
filters. Failure to follow this warning can lead to premature
furnace failure and/or vent fi_ilure which could result in a fire
hazard and/or bodily harm.
For attic installation, it is important to keep insulation 12 in
or more away fiom any _/mace openings. Some types of
insulating materials may be combustibles and may cause a
fire haza*d and proper w damage
This furnace is approved ['or reduced clearances to combustible
constn/ction, therefore, it may be installed in a closet or similar
enclosure Since this unit may be installed in an upflow, counter°
flow, or horizontal position, it may be located in a basement or on
the same level as area to be heated. [n any case, unit should always
be installed level
In a basement, or when installed on floor (as in a crawlspace), it is
recommended that unit be installed on a concrete pad that is 1 in
to 2in thick
When installed in counterflow position, furnace must not be
installed on combustible flooring, unless approved subbase is used.
Also, since flue pipe is in a counterflow position, Downflow
Conversion/Vent Guard Kit MUST be used, (Also, read page 9.)
When installed in a horizontal position, t:m'nace may be suspended
by using an angle iron frame, as tong as total weight of both
furnace and fi'ame are allowed _br in support calculations. (Other
methods of suspending are acceptable.) When installed in the
Horizontal Position, this fi/rnace must not be installed on combus=
tible flooring, unless the approved Horizontal Subbase is used.
The required n_ininmm clearances %r furnace are specified in
Table 1.
The _i/rnace should be located as close as possible to chinmey or
vent in order to keep vent connections short and direct The
Da'nace should also be located as near as possible to center of air
distribution system.
Step 2--Location Relative to Cooling Equipment
When installing f_/mace with cooling equipment for year-round
operation, the t'ollowing recommendations must be followed _br
series or parallel airflow:
1. In series airflow applications, coil is mounted after furnace in
an enclosure in supply-air stream. The [:urnace blower is used
for both heating and cooling airflow.
The coil MI. ST be installed on air discharge side of furnace
Under no circumstances should airflow be such that cooled,
conditioned air can pass over _itmace heat exchanger. This
will cause condensation in heat exchanger and possible
_hilure of heat exchanger which could lead to a fire hazard
and/or a hazardous condition which may lead to bodily harm.
Heat exchanger _itilure due to improper installation may not
be covered by warranty
2 In parallel airflow applications, dampers must be provided to
direct air over f_/mace heat exchanger when heat is desired and
over cooling coil when cooling is desired.
INPORTANT: The dampers should be adequate to prevent cooled
air fi'om entering furnace. If manually operated, dampers must be
equipped with a means to prevent operation of either cooling unit
or _i/rnace unless damper is in full cooi or heat position.
mNSTALLATION
Step l--Air for Combustion and Ventilation
Installation of this filrnace in an area where it will receive
contaminated combustion air must be avoided Such contami=
nation would include the following: ammonia, chlorine,
hy&ogen sulfide, halogenated hy&ocarbons, carbon tetra°
chloride, cleaning solvents, hy&ochloric acid, water soften°
ing chemicals, and similar chemicals. Failure to fbllow this
warning will lead to premature resting of heat exchanger and
possible premature furnace fbilure and/or vent fhilure which
could result in fire hazard and/or bodily harm.

Donotblockcombustion-airopeningsinthefurnace,Any
blockagewillresultinimpropercombustionwhichmayresult
inafirehazardan_orcausebodilyharm
Step 2--General
This fhrnace should be installed in a location in which fi_cilities %r
ventilation permit satisfi_cto_- combustion of oil, proper venting,
and maintenance of ambient temperature at safe limits under
normal conditions of use. The location should not interfere with
proper circulation of air within the confined space. (See NFPA=3 !,
Section 1.5.)
In addition to air needed for combustion, process air shall be
provided as required for: cooling of equipment or material,
controlling dew point, heating, @ing, oxidation or dilution, safety
exhaust, and odor contml.
In addition to air needed for combustion, air shall be supplied for
ventilation, including all air required for comfort and proper
working conditions fbr personnel.
The barometric draft regulator (included with Nrnace) shall be
installed in same room or enclosure as furnace in such a manner as
to prevent any diffkrence in pressure between regulator and
combustion=air supply.
Air requirements for operation of exhaust Rms, kitchen ventilation
systems, clothes dwers, and fireplaces shall be considered in
determining the adequacy of a space to provide combustion=air
requirements.
The tack of a proper amotmt of combustion air can lead to serious
Nrnace operational problems. Some of these problems are:
1. Excessive oil burner after-drip, and oil Nines.
2. Sooting.
3. Melted oil burner ignitor/relay control.
4. Air band or air mrbulator settings more open than nom_al
5. Lockouts on start=up
The requirements _br combustion and ventilation air depend upon
whether furnace is tocated in a (ONFINED or [N(ONFINED
space.
Step a--Unconfined Space
An unconfined space must have at 1east 50 cu kfor each 1000
Bmh of total input [br all the appliances (such as furnaces, clothes
dwers, water heate*s, etc) in the space.
In unconfined spaces in buildings of conventional fi'ame, brick, or
stone construction, infiltration MAY be adequate to provide air for
combustion, ventilation, and dilution of flue gases This detem?i=
nation must be made on an individual installation basis and must
take into consideration the overall volume of'unconfined space, the
number of windows and ventilation openings, the number of doors
to the outside, internal doors which can close offunconfined space,
and overall tighmess of building constluction Conside*ation must
also be given to the amount of storage items (fi/rniture, boxes, etc.)
within the unconfined space which take away l"romthe air volume
(See Table 2.)
Many new buildings and homes (and older ones that have been
weatherized) MUST BE considered as being of tight construction,
therefore, infiltration will not be sufficient to supply necessary air
fbr combustion and ventilation.
Table 2--Mimmum Floor Area
For Unconfined Space
88CMA FURNACE MINIMUM SQ FTWBTH
INPUT BTUH 7-tt2 FT CEILING
70,000 467
9%000 607
108,000 700
lt9,000 793
140,000 933
154,000 1026
A building can be considered as being of tight constluction when:
* Walls and ceilings exposed to outside atmosphere have a
continuous water vapor retarder with a rating of 1 perm or tess
with openings gasketed or sealed, and/or
* Weatherstripping has been added on operable windows arid
doors and/or
* Caulking or sealants are applied to areas such as joints around
window and door frames, between sole plates and floors,
between wall-ceiling joints, between wall panels, at penetra=
tions tbr plumbing, electrical, arid fhel lines, and at other
openings
If combustion and ventilation air must be supplied to an uncon=
fined space from outside, an opening with a FREE AREA of riot
tess than 1 sq in. per 1000 Bmh of total input of all appliances
within unconfined space (but not tess than 100 sq in.) must be
provided. This opening must be located such that it can not be
blocked at any time.
Step 4--Confined Space
A confined space has a volmne of less than 50 cu fl per 1000 Btuh
of the total input rating for all appliances installed in that space
When Nrnace is installed in a closet or enclosure, 2ventilation
openings, with OPEN AREA as dimensioned in example below
are required for combustion air. The openings should be located
about 6 in. from top and bottom of enclosure at ti'ont of fhrnace.
(See Table 3.)
TaRe a--Combustion Air
From Confined Space
58CMA FURNACE LENGTH
INPUT NTUH {BN.)
70,000-t 0S,000 16
t19,000 20
HEIGHT
(BN.)
g
q0
NOTE: In calculating free area, consideration shall be given to
blocking effect of louvers, grilles, or screens protecting openings.
Screens used shall not be smaller than 1/4-in. mesh and shall be
readily accessible for cleaning. If free area through a louver or
grille is known, it shall be used in calculating size and free area
specified. If design and free area are not known, it may be assumed
that wood louvers have 20 percent free area and metal louvers and
grilles have 60 percent free area. Louvers shall be fixed in open
position or interlocked with fi/mace so they open automatically at
furnace start=up and remain open during It/mace operation.
The size of the openings depends upon whether the air comes from
outside of the structure or an unconfined space inside the strt/cmre.
ALL AIR FROM INSIDE THE STRUCTURE
For a confined space, where air is taken from an interior space, 2
pem_anent openings of equal area are required. One opening must
be within 12 in of ceiling arid the other within 12 in of floor. Each

openingmusthaveafleeareaofatleastI sqin,per1000Bmhof
totalinputratingbutnotlessthan100sqin.(See_able4.)
TaRe 4_Combustion Air
From Unconfined Space
FREE AREA PER
88CNA FURNACE OPENING
INPUT BTUN {SQ BN.)
70,000 100
91,000 100
t05,000 105
119,000 119
t40,000 140
154, 000 154
ALL AIR FROM OUTSIDE OF STRUCTURE
If outside air is supplied to a confined space, then the 2 openings
must be equal and located as above.
1. If combustion air is taken through a pem_anent opening
directly communicating with the outdoors, the opening shall
have a n_ininmm flee area of 1 sq in. per 4000 Bmh of total
input rating for all equipment in the enclosure.
2. If con_bustion air is taken from outdoors through vertical
ducts, the openings and ducts MUST have at least 1 sq in. of
flee area per 4000 Btuh of the total input %r all equipment
within the confined space. (See Table 5j
Table 5--Combustion Air From Outdoors
Through Vertica! Ducts
FREE AREA PER
58CMA FURNACE ROUND PIPE
OPENING
INPUT BTUN (SQ IN.} (BN. DIAI_4}
70,000 17.5 5
91,000 22.8 6
105,000 26.3 6
119,000 29.8 6
140,000 35.0 6
154,000 38.5 6
3. If combustion air is taken from outdoors through horizontal
ducts, the openings and ducts MUST have at least 1 sq in. of
fi'ee area per 2000 Btuh of the total input %r all equipment
within the confined space. (See Table 6j
Table 6--Combustion Air From Outdoors
Through Horizontal Ducts
58CNA FURNACE FREE AREA PER OPENING ROUND PiPE
INPUT BTUN {SQ IN.} (IN. DIAM}
70,000 35.0 7
91,000 45.5 8
t05,000 52.5 9
119,000 59.5 9
t40,000 70.0 10
184,000 77.0 10
When ducts are used to supply air, they must be of the same cross
sectional area as flee area of openings to which they connect
The mininmm dimension of rectangular air ducts must not be tess
than 3 in.
DLCT WORK RECOMMENDATIONS
When supply ducts carw air circulated by fi/mace to areas
outside spaces containing fi/rnace, return air MUST also be
handled by a duct sealed to furnace casing and tem_inating
outside space containing _/rnace. IncmTect duct work termi=
nation and sealing wilt create a hazardous condition which
could lead to bodily ham_.
Return=air grilles and warm air registers MUST NOT be
obstructed. Failure to follow this caution will result in
premature failure of the heat exchanger,
The proper sizing of warm air ducts is necessa W to ensure
satisfbctory furnace operation. Duct work should be in accordance
with the latest editions of NFPA=90A (Installation of Air Condi-
tioning and Ventilating Systems) and NFPA-90B (Wam_ Air
Heating and Air Conditioning Systems) or Canadian equivalent.
The supply duct work should be attached to flanged front opening
provided at discharge end of furnace. The return-air duct work
should be attached to flanged rear opening of furnace. See Fig. 2
for dimensions of these openings.
NOTE: The back (blower access opening) should not be used %r
remrn air.
The following recommendations should be followed when install-
ing duct work:
1. Install locking=type dampers in al! branches of individual
ducts to balance out system. Dampers should be adjusted to
impose proper static at outlet of _i/rnace.
2. A flexible duct connec[or of noncombustible material should
be installed at unit on both supply- and return=air systems. In
applications where extremely quiet operation is necessaw, the
first 10 f_ (if possible) of supply and return ducts should be
internally lined with acoustical material.
3. In cases where return=air grille is located close to fire inlet,
there should be at least one 90° air mrn between fire inlet and
grille. Further reduction in sound level can be accomplished
by installing acoustical air turning vanes or lining duct as
described in item 2 above.
4 When a single air grille is used, duct between grille and
ii/mace must be the same size as return opening in fire, ace
VENTING
Venting of filrnace should be to the outside and in accordance with
local codes or requirements of local utility-.
OIL=FIRED APPLIANCES SHALL BE CONNECTED TO
FLUES HAVING SUFFICIENT DRAFT AT ALL TIMES TO
ENSURE SAFE AND PROPER OPERATION OF APPLIAN(E.
For additional venting irKormation, refer to ANSIiNFPA 211
Chimney Fireplaces, Vents_ and Solid Fuel Burnino_liances
an&or CSA B139 Installation (7ode.
This fl/rnace is certified fbr use with Type "L" vent (maximum flue
gas temperature 575°F).
Vent System Inspection
Be[bre _i/mace is installed, it is highly recommended that any
existing vent system be completely inspected.
For any chimney or vent, this should include the following:
1. Inspection for any deterioration in chinmey or vent. If dete-
rioration is discovered, chimney n-rest be repaired or vent must
be replaced.

TuNe 7--Electrical Data
UNIT
SBZE MAX WIRE
LENGTH (FT)
VOLTS--
HERTZ--
PHASE--
115--60--1
115--60--1
OPERATING
VOLTAGE RANGE
Max.* Min.*
132 104
132 104
MAX
UNIT
AMPS
12.2
15.7
MIN
WIRE
GAGE
14
12
MAX FUSE OR
CKT BKR AMPS
t05-12 26 15
120-20 26 20
Permissible limits of voEtage range at which unit will operate satisfactorily.
1 Length shown Js as measured 1 way alor_g wire path betweer_ u_it and service panel for maximum 2 percer_t vo{tage drop.
$ Time-delay fuse is recommer_ded
2. Inspection to ascertain that vent system is clear and fi'ee of
obstructions. Any blockage must be cleared befbre installing
fLli"nace,
3. Cleaning chimney or vent if previously used fbr venting a
solid fuel burning appliance or fireplace.
4. Confirming that all unused chimney or vent connections are
properly sealed.
5. Verification tiaat chimney is properly lined and sized per the
applicable codes. (Refer to list of codes in Safkty Consider-
ations section.)
Mason_ Chimneys
This Nmace can be vented into an existing masonry chimney. This
Nmace must not be vented into a chimney servicing a solid Net
burning appliance. Before venting Nmace into a chimney, the
chimney MUST be checked fk)r deterioration and repaired if
necessary. The chimney must be properly lined and sized per local
or national codes.
If Nrnace is vented into a common chinmey, the chinmey must be
of sufficient area to accommodate the total flue products of all
appliances vented into chimney.
The fbllowing requirements are provided for a safe venting
system:
1. Be sure that chimney flue is clear of any dirt or debris.
2. Be sure that chimney is not servicing an open fireplace.
3. Never reduce pipe size below the outlet size of Nmace. (See
Fig. 2.)
4. All pipe should be supported using proper clamps and/or
stlaps. These supports should be at least every 4 ft.
5. Ail horizontal runs of pipe should have at least 1/4-in. per ft of
upward slope.
6. All runs of pipe should be as short as possible with as f)w
rams as possible.
7. Seams should be tightly joined and checked for leaks.
8. The flue pipe must not extend into chimney but be flush with
inside wall.
9. The chimney n-rest extend 3 ft above highest point where it
passes through the roof of a building and at least 2 t't higher
than any portion of a building within a horizontal distance of
10 ft. It shall also be extended at least 5 ft above highest
connected equipment flue collar.
10. Check local codes for any variance.
Factory=Built Chimneys
Listed _actory-built chimneys may be used. Refer to chimney
manui_acmrer's instructions fbr proper installation.
OIL BURNER
This fl/mace is supplied with a high-pressure atomizing retention
head-type burner (fk_ruse with grade 1 or 2ft_el oil) The motmting
flange is fixed to burner air robe and no adjustment is required for
insertion length.
OIL CONNECTIONS
Complete instructions for installing fuel oil piping can be _bund in
oil burner Installation Instrtlctions included with furnace
Oil line entry holes are provided in side panels. Two holes are
provided in each location so that a 2-pipe system may be used if
desired.
An oil filter should be used with all oil burners and should be
installed as close to burner as possible.
BAROMETRIC DRAFT CONTROL
The barometric draft control shipped with furnace MUST be used
with [_urnace to ensure proper operation. Instructions fk}r installing
control are packed with control.
ELE( TRI( AL CONNECTIONS
N
The unit cabinet must have an uninterrupted or unbroken
electrical ground to minimize personal injury if an electrical
fault should occur. A green ground screw is provided in
contIol box for this connection.
115-v Wiring
Befk_re proceeding with electrical connections, make certain that
voltage, fiequency, and phase correspond to that specified on unit
rating plate. Also, check to be sure that service provided by utility
is sufficient to handle load imposed by this equipment. Refer to
rating plate or Table 7 fbr equipment electrical specifications
Make all electrical connections in accordance with National
Electrical Code (NEC) ANSI NFPA 70-2001 and any local codes
or ordinances that might apply For Canadian installations, all
electrical connections must be made in accordance with Canadian
Electlical Code CSA C22.1 or subauthorities having jurisdiction.
Do not connect ahmfumm wire between disconnect switch
and furnace Use only copper wire. Failure to fkfllow this
caution will lead to intermittent electrical operation andor
fire hazard.
The contlol system depends on correct polarity of power supply.
Connect HOT wire (H) and NEUTRAL wire (N) as shown in Fig.
3 or4.
A separate line voltage supply MUST be used with a fused
disconnect switch or circuit breaker between main power panel
and unit. (See Fig 3 or 4)
Metallic conduit (where required/used) may terminate at side panel
of unit. It is not necessa_ to extend conduit inside unit f?om side
panel to contlol box.
When replacing any original furnace wiring, use only 105_>( No
14 AWG copper wire.

24°V Wiring
Instructions %r wiring thermostat (field supplied) are packed in
thermostat box Make them_ostat connections as shown in Fig. 3 or
4 at 24=v terminal board on ihn timer board.
Accessories
When installing optional accessories to this appliance, follow
manufacturer's Installation Instructions included with accessory.
Od-ler than wiring fbr themaostat, wire with a minimum of type "T"
insulation (63C>Frise) nmst be used for accessories.
HORIZONTAL OR DOVv_FLOW INSTALLATION
For horizontal installation, determine which "side" will become the
"top", when d_e unit is laid down. Remove the flue pipe clearance
knock=out fi'om the top of that side panel. Install the flue elbow so
that it exits the cabinet of d_e ft/mace through that opening.
For counterflow installation, the flue pipe must exit the cabinet
through 1 of the side panel openings (as above), then extended up
the side of the furnace. Insure that adequate clearances to con>
bustibles are observed. Downflow Conversion/Vent Guard Kit
MUST be used.
Remove burner by loosening mounting nuts and mrn oil burner
slightly counterclockwise to unlock the key hole burner flange.
Prevent putting undue strain on burner wiring. (It may be neces=
saV to disconnect burner wiring in some cases.)
To reinstall burner, insert on the four burner studs on key hole
burner flange and turn it clockwise to lock it and dghten nuts.
IMPORTANT: Burner retest always be installed in the upright
position with ignition control on top.
FILTERS
Never operate unit without a fiher or with filter access door
removed. Failure to adhere to this warning could lead to a
hazardous condition which could lead to equipment damage
and bodily harm
An external filter rack is provided as standard equipment with
furnace A sufficient clearance should be provided tbr air filter
access See Table S i\_r filter rack flange dimensions for return air
duct
Tab{e 8--Filter and Flange (In.)
UNIT AIR NLTER FLANGE OPENING
SIZE SBZE SRZE
10x24x1
105-12 or 15 X 23
16X25X1
t20-20 20 X 30 X 1 19 X 20
START-UP, ADJUSTMENT, AND SAFETY CHECKOUT
Step l--Operational Checkout
DO NOT TAMPER WITH UNIT OR CONTROLS (7ALL
YOUR SERVICE TECHNI(IAN. Failure to follow this
warning could result in personal and/or property damage
Installation of fmnace is now complete Run through the ibltowing
checkout and ensure each item has been peribm_e&
1. (orrect nozzle size has been selected for desired input rate.
2. Blower wheel support is removed.
3. Electrical wiring is completed according to Fig. 3 or 4.
4. Blower access door is secured in place
5. Valve on oil supply line is open.
6 RESET BUTTON on primaD" control is pushed down
7 Flame observation door and 2 cleanout access doors located at
fi'ont of unit are closed.
8. Thermostat is set for heating mode and set above room
temperature
If all of the above items have been perfbrmed, set main electrical
switch to ON position and burner should start. When burner starts,
proceed to Combustion Check section.
Step 2--Combustion Check
In order to obtain optimum per%rmance from oil burner, the
following setup procedures must be followed:
1 A test kit to measure smoke, stack draft, over-fire draft, oil
pmnp pressure, (02, and stack temperatures MUST be used in
order to obtain proper air band setting. Although all of the
above measurements are required _br optimum setup and
efficiency data, the most impmlant readings that must be taken
are smoke number, over-fire &aft, stack draft, and pmnp
pressure
2. The proper smoke nmnber has been established by engineer-
ing tests to be between 0 and 1. This degree of smoke emission
is commonly referred to as a "trace" of smoke. It is recom-
mended m use a Bacharach hue spot smoke test set or
equivalent.
3. In order to ensure proper draft through fhrnace, a barometric
draft regulator (supplied with furnace) retest be installed.
In order fbr this device to fhnction properly, barometric damper
must be mounted with hinge pins horizontal and face of damper
vertical. (See instructions included with damper.) The draft regu-
lator should be adjusted after furnace has been firing fbr at least 5
minutes, and set between -0.025 and -0.035 in. wc. (See Table 9.)
4. The over-fire &aft, which is taken through observation door
(located in center line above burner in ii'ont panel of furnace),
is a measurement necessary to detem_ine if there is a blockage
between oil burner and flue outlet.
There should be a total pressure drop of between 0.020 and 0.05 in.
wc through furnace as shown in Table 9. The over-fire draft must
be set within the range shown in Table 9.
TaRe 9--Furnace Draft Conditions (In. WC)
FURNACE FLUE OVER-FIRE TOTAL RESTRICTION
iNPUT DRAFT DRAFT THROUGH
{BTUH) MINIMUt'V] MAXIMUM HEAT EXCHANGER
70,000 -0.025 0.010 0.020 to 0.035
91,000 -0.025 0.020 0.030 to 0.045
108,000 -0.025 0.025 0.035 to 0.050
110,000 -0.025 0.025 0.035 to 0.050
140,000 -0.025 0.025 0.035 to 0.050
154,000 -0.025 0.025 0.035 to 0.050
A reading outside the range shown in Table 9 (for example +0.1 in.
wc) would indicate that f_lraace is in an extremely high-pressure
condition in primary section. This condition may be caused by any
of the following problems:
a. Excessive combustion air due to air shutter being too wide
open.
b A lack of flue &aft (chimney effect) or some other
blockage, such as soot, in secondary section of heat
exchanger.

Go
,,ll_
UNU_
RED _LNU_
BLACK
BLUE
VERSION EN FRANCAIS INCLUS DANS MANUEL
D'INSTALLATION.
,HI_GND
x >_>_ LGNITOR
_L2
BURNER MOTOR
VALVE
>_ T OIL '_
PRIMARY
VALVE CAD CELL
STANDARD HEAT / COOL WIRING DIAGRAM WITH ELECTRONIC FAN TIMER.
OIL INPUT: 0.75 USOPH.
COOLING CAPACITY: 5 TONS MAX.
_: USE JUMPER ONLY WHEN THE COOLING AND HEATING SPEEDS ARE
SAME.
_ USE ONLY OIL PRIMARY CONTROL EQUIPPED WITH VALVE ON DELAY
(PRE PURGE) R7184B, P OR U.
_*_ USE CONSTANT IGNITION ONLY. NEVER USE THE INTERRUPTED IGNITION
AND/OR THE BLUE WIRE ON R7184 CONTROL.
FOR HUMIDIFIER, REMOVE THE DUMMY TERMINAL MARKED BUM.
FOR ELECTRONIC AIR CLEANER, REMOVE THE DUMMY TERMINAL MARKED EAC.
DNS 0925 Rev.A
OIL INPUT : 0.65 USGPH
COOLING CAPACITY : 2 1/2
to 5 TONS MAX
LO _ 3APACITOR
Oz
WHITK
L_kL_DS
BLACK
BLUE
OIL INPUT : 0.50 USOPH
COOLING CAPACITY : 2 TONS
1H(_) 115 VAC I_/60HZ POWER SUPPLY
LIMIT
Fig. 3--Wiring Diagram (I05-12) A03164

FOR HUMIDIFIER, REMOVE THE DUMMY TERMINAL MARKED HUM.
FOR ELECTRONIC AIR CLEANER, REMOVE THE DUMMY TERMINAL MARKED EAC
DNS 0926 Rcv.A
BLUE *Jumper
OIL INPUT : 1.10 USGPH
COOLING CAPACITY : 5 TONS
Fig. 4--Wiring Diagram (120-20) A03165

5_
6_
--> ?.
c. _se of an oversized nozzle input
& Pump pressure over values listed iu Table 10.
The CO 2 and stack temperature instruments enable you to
obtain data required to determine thermal efficiency of _;ar=
*lace
An oil filter should be installed as close to burner as possible
with ALL oil burners and is essential on lower firing rate
bumers_ We recommend the use of a tow pressure drop oil
filter such as the General Filter, Inc. model #lA-25A or
equivalenL
The oil pressure regulator is factory set to give oil pressure of
130 psi J:br the model having 105,000 BTUH input and 130 psi
fbr d'*e model having 119,000 BTUH input. The firing rate
noted on nameplate may be obtained using the nozzles and
pump pressures indicated in Tahle 10.
--> TaMe 10--Sumer Input and Nozzle Size and Pump
Pressure
FURNACE INPUT REAL PUMP
INPUT NOZZLE
USGPN PRESSURE
(BTUH)
70,000 0.50 0.50-70VV 100
91,000 0.65 0.55-70B 140
105,000 0.75 0.65-70B 133
120,000 0.85 0.75-70B 128
140,000 1.00 0.85-70B 138
15&000 1.10 0.85-70B 167
SPECIFBCAT_ON
PUMP PRESSURE
100
140
130
130
140
170
8. On a new iustallation, air entrapped in oil lille leading fiom
tank to nozzle must be thoroughly purged in order to prevent
excessive after &ip. The oil pump is provided with a special
fitting which allows purging of ally air between tank and oil
pump. Tile proper procedt/re for performing this operation is
as £dlows:
a. Place a piece of clear plastic 1/4 in. diameter robing over
purge fitdng on oil pump.
b. Start oil burner, then open purge fitting and allow burner to
run until purge robe is completely fi'ee of air bubbles.
c. Tighten purge fitting. Allow oil to run to nozzle and fire
burner.
d. If purging takes longer than 15 sec and no flame has been
established, burner stops. Push reset button on fi'out of
primary control to restart burner
e. For detailed information on operation of prima_ contloL
refer to instructions included with iq/rnace.
After all the setup procedures mentioned above have been corn=
pleted, the burner should be allowed to operate and an inspection
rein'or should be used to observe the flame pattern at tip of nozzle.
Any irregularities such as burning to 1 side or pulsating flame
patterns should be connected by changing nozzle.
Step 3--Fan Adjustment Check
_his f_lruace is equipped with a 4=speed direct-drive motor to
deliver a temperature rise within range specified on rating plate,
between remm and supply plenums, at external duct static pressure
noted on rating plate
When operating furnace in heating mode, static pressure and
temperature rise (supply=air temperatme minus return=air
temperature) nlust be within those limits specified on rating
label. Failure to follow this warning could lead to severe
ftm]ace damage.
Adjust fan speed A(COPdDING TO OIL INPUT SELE(TED so
that temperature rise is within rise range specified on rating plate.
(See Table 110 Consult wiring diagram for speed changes on
direct=&ive motor
Tab{e 11--Speed Selection
FURNACE RECOMMENDED
UNiT iNPUT BLOWER
SIZE (BTUH) SPEED
70,000/119,000 Med-Low
105-t2/
120_20 91,000/140,000 Med-High
105,000/154,000 High
To adjust fire off time, set DIP switches ou coutloi board to obtaiu
desired timing. (See Fig. 5.)
60 Sec 90 Sec 120 Sec 150 Sec
DELAY OFF DIP SWITCH SETTINGS
A95115
Fig. 5--Fan Off Time DIP Switch Settings
(Slack Box Represents Switch Posit{on)
Step 4--Limit Controm Check
After furnace has beer* iu operation _br at least 15 minutes, restrict
return-air supply by blocking filters or closing return registers and
allow furnace to shut down or* high limit. The burner should shut
off. and main blower should contkme to rnn.
Remove restriction, and burner should come back on in a f_w
minutes.
Step 5--For Year-Round Air Conditioning
This fitmace is designed £_r use in cor_juncfion with cooling
equipment to provide year-round air couditioniug_ The blower has
been sized fbr both heating and cooling, however, fan motor speed
may need to be changed to obtain necessary cooling airflow
Step 6--Heating
The blower speed is _i_ctory set to deliver required airflow at
normal duct static pressure.
Step 7--Cooling
The blower speed may be field adjusted to deliver required airflow
for cooliug application. (See Table 12)
10
Step 8--Constant Blower Switch
This _hruace is equipped with a coustant low=speed blower option.
Whenever room themlostat is not calling for heating or cooling,
blower runs on tow speed in order to provide air circulation_ If
constant blower option is not desired, the rocker switch on top of
cabinet may be used to mm off constant speed.

UNIT BLOWER
SBZE SPEED
High
105o12 Med-High
Med-Low
Low
High
120o20 Med-High
Med-Low
Low
NOTES:
Table 12--Airflow Data (CF/vl)
EXTERNAL STATIC PRESSURE IN. WC
0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
1425 1350 1305 1250 1170 1030 925 805
1130 1045 1000 950 885 820 745 670
840 810 770 740 685 635 580 509
725 730 740 745 730 715 690 665
2080 2041 1965 1864 1702 1576 1474 1336
1892 1859 1770 1675 1550 1449 1330 1217
1556 1475 1394 1318 1211 1134 1051 938
1221 1164 1081 998 926 855 782 653
1. Airflow values in cubic fi per minute (CFM) rounded to nearest 5 CFM.
2. Data taken with Nters in place
MAINTENANCE
The ability to properly per%tin maintenance on this equip°
ment requires certain expertise, mechanical skills, tools, and
equipment If you do not possess these, do not attempt to
perform any maintenance on this equipment other than those
procedures recommended in the User's Manual. FAILETRE
TO FOLLOW THIS WARNING COULD RESULT IN
POSSIBLE DAMAGE TO THIS EQUIPMENT, SERIOUS
PERSONAL INJURY, OR DEATH.
Be%re per%rming any service ftmctions, unless operations
specifically require power to be on, make sure all utilities are
turned off upstream of appliance. Failure to comply with this
warning will cause a fire hazard and/or bodily harm.
iiiiiiii_, iiiiil
To avoid personal injury, make sure electrical supply power
is off before servicing Failure to follow this warning could
lead to electrical shock, fire, or death.
Step l--General
In order to keep this f'umace in good operating condition and to
maintain its wan'anty, the t_umace MUST be serviced on an annual
basis. This servicing includes a nozzle change, a burner inspection,
a visual check of robe passages through flue outlet and cleanout
ports, and a visual inspection of combustion chamber when burner
is removed.
Depending on above inspection, service could also include a
cleaning and vacuuming of heat exchanger robes and possibly the
heat exchanger drum section.
Removal of any heat exchanger components which are sealed by
gaskets requires replacement of gasket.
Failure to replace any heat exchanger gaskets with new
gaskets when any heat exchanger plates or covers are re-
moved could lead to heat exchanger leakage, sooting, and/or
a hazardous condition capable of causing bodily ham_.
This furnace should never be operated without an air filter
Disposable filters should be replaced at least once a year. If
equipped to provide cooling, filters should be replaced a minin-mm
of twice a year Permanent filters should be cleaned at least twice
a year.
ALWAYS KEEP MAIN OIL VALVE TURNED OFF IF
BURNER IS SHUT DOWN FOR AN EXTENDED PERIOD OF
TIME
Step 2--OH Burner
For optimum per%finance, oil burner nozzle should be replaced
once a year. Contact your service technician if you are unsure of
this procedure.
The procedure for nozzle installation and/or replacement is out=
lined in oil burner instrnction manual which came with t_m'nace
AfIer replacement of nozzle, burner should be adjusted in accor=
dance with Combustion Check section of this instruction.
Step 3--Beat Exchanger and Flue Pipe
Ordinarily, it is not necessary to clean heat exchanger or flue pipe
eve_ year, but it is necessary to have your service technician
check unit before each heating season to determine whether
cleaning or replacement of parts is required
If cleaning is necessary, the _bltowing steps should be performed:
1 Turn off all oil and electrical supplies upstleam of furnace
11
r
If _i/rnace has been in operation, some surfaces may be hot 1
Allow time _br unit to cool dox_n personal inju_ will result, j
2Disconnect flue pipe.
3 Remove flue collar panel located in I'ront part of ftmaace.
4. Remove bafl"le t'rom seconda_ heat exchanger.
5. Disconnect oil line and remove oil burner t'rom Nrnace.
6. Open 2 cleanout doors located in upper part of flout panel of
_,/fnace.
7. Clean secondary tubes, and primary cylinder with stiff brush
and vaCUllnl cleaner.
8. Befbre re-assembly, the heat exchanger and combustion
charnher should be inspected to determine if replacement is
required.
9. After cleaning, replace bane, flue collar plate, oil burner, and
close the 2cleanout access doors. Reconnect flue pipe and oil
line.
10. Re-adjust burner _br proper operation.
Step 4--Blower Removal
To remove blower t'rom fm'nace:
1. Turn off all oil and electrical supplies upstleam of furnace.
2. Remove burner access and blower door.
3. Remove blower retaining screw (on blower shell:).

4.Removeco\erfi'omcontrolboxanddisconnectthermostat
andpowerwiresfromtheboard
5_Slideblox_er_k_rwardonrailstm_ardfiontofunit_
6, Reverse items 1 through 5 to reoinstalt blower, Refer to wiring
diagram (Fig, 3 or 4) of these insmlctions or diagram located
on inside of blower door to properly rewire unit,
Copyright 2003 CARRIER Corp. _ 7310 W. Morris St • Indianapolis. IN 46231 58cma5si
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
B°°k 1h_ PC 101 catalog No. 535-80123 Printed in U.S.A. Form 58CMA-5SI Pg 12 11-03 Replaces: 58CMA-4SI
Tab 16al 8a