COMFORT-AIRE OLF Series, OUF Series, ODF Series, OLR Series, ODR Series Installation And Operation Manual
Installation and Operation Manual
ODF, ODR, OUF, OLF & OLR Series
Oil-Fired Furnaces
517.787.2100 • www.marsdelivers.com • www.heatcontroller.com
Installation and Operation Manual - ODF, ODR, OUF, OLF & OLR Series
INSTALLATION INSTRUCTIONS
ODF, ODR, OUF, OLF, & OLR
Oil-Fired Furnaces
Save these instructions for future reference
Improper installation, adjustment, alteration, service, or maintenance can cause injury or property damage.
Refer to this manual. For assistance or additional information, consult a qualified installer or service
agency.
WARNING
Do not store combustible materials, including gasoline
and other flammable vapors and liquids, near the
furnace, vent pipe, or warm air ducts. The homeowner
should be cautioned that the furnace area must not be
used as a broom closet or for any other storage
purposes. Such uses may result in actions that could
cause property damage, personal injury, or death.
CAUTION
Never burn garbage or paper in the heating system and
never leave rags, paper, or any flammable items around
the unit.
WARNING
TABLE OF CONTENTS
START-UP CHECKLIST................................................ 2
INSTALLATION ............................................................. 3
Location .................................................................. 3
Clearances .............................................................. 3
Venting .................................................................... 6
Filters ................................................................... 10
START-UP................................................................... 10
SEQUENCE OF OPERATION .................................... 12
MAINTENANCE .......................................................... 12
WIRING DIAGRAMS .................................................. 14
WARNING
This furnace is not approved for installation in a mobile
home. Do not install this furnace in a mobile home.
Installation in a mobile home could result in actions that
could cause property damage, personal injury, or death.
1900 Wellworth Ave.
Jackson, MI 49203
www.marsdelivers.com
www.heatcontroller.com
CAUTION
The installation of the furnace, wiring, warm air ducts, venting, etc. must conform to the requirements of the National Fire
Protection Association Standard for the Installation of Oil Burning Equipment, NFPA No. 31; the National Electrical Code,
ANSI/NFPA No. 70 (in the USA); the Installation Code for Oil Burning Equipment, CSA Standard CAN/CSA B139 (in
Canada); the Canadian Electrical Code Part 1, CSA 22.1; the Recommendations of the National Environmental Systems
Contractors Association; and any state or provincial laws or local ordinances. Local authorities having jurisdiction should
be consulted before installation is made. Such applicable regulations or requirements take precedence over the general
instructions in this manual.
Installation and Operation Manual - ODF, ODR, OUF, OLF & OLR Series
OIL FURNACE START-UP CHECKLIST
(Complete this page and keep for future reference)
Customer Name________________________________________________________________________________
Address ______________________________________________________________________________________
City __________________________________________ State ________________ Zip Code __________________
Furnace Model # ____________________________________________________ Serial # ___________________
Input Rate__________________________________________________________ Nozzle Used _______________
New Construction ___________________________________________________ Replacement ______________
Date of Installation _____________________________
Installation Data
Furnace Location:
A. Basement – Open _________ Enclosed* ________
B. Utility room – Open ________ Enclosed* ________
C. Closet – Open ____________ Enclosed* ________
D. Crawl space – Open _______ Enclosed* ________
* Provisions must be made for adequate air for combustion.
See Combustion and Ventilation Air on page 7.
Chimney Data:
A. Inside _________ Outside _________
B. Brick or Masonry _________
C. Lined _________ Size: ___________
D. Type: Class A all-purpose ___________ Type L ________
E. Condition ________________________
Flue Pipe:
A. Distance to chimney ____________ Pitch __________
B. Diameter _____________________
C. Barometric damper installed __________
D. Drill 5/16" hole in flue pipe 12" upstream of barometric
damper _________
E. Obtain drafting reading; adjust barometric ____________
Oil Tank Data:
A. Installed in basement _____________
B. Outside ___________
C. Buried/Depth: _________________
D. Size: __________ gallons
E. Age: ________________________
F. Date of last cleaning: ___________________
Oil Lines:
A. Size: 3/8" ________ 1/2" _______ Other _______
B. Single pipe _________ Two pipe ________
C. Distance from tank __________ Lift _________
D. Filter type _____________ Inspect ______Change _____
E. Pressure test ___________
F. Recheck all fittings for tightness ___________
Thermostat
A. Type: Heating ________ Cooling _______
B. Anticipator set ________
C. Wires: New __________ Old ___________
Air Filter
A. Type: Permanent ______ Disposable ______
B. Installed _____________
C. Size: ________________
Start-Up Procedure
A. Close disconnect switch ___________
B. Set thermostat to call for heat ___________
C. Bleed air from lines and pump; run for 20 seconds
after bubble disappears _________
D. Install vacuum gauge; check pump vacuum __________
E. Install pressure gauge; adjust pressure to 140 psig
(except on 57 models – adjust to 100 psig) _________
Always verify proper pump pressure to corresponding
tables with instructions supplied with unit.
F. After 10 minutes of operation, obtain flue temperature
reading: 1
G. Obtain smoke reading:
st
1
_______________
H. Measure CO2: 1
st
______________
nd
2
st
nd
2
_________________
______________
________________
rd
3
______________
nd
2
______________
rd
3
______________
3
rd
____________
I. Check draft overfire _________ Breech _________
J. Air shutter setting ____________ Locked _________
K. Measure static pressure in duct system
Static pressure on supply side ___________
Static pressure on return side ___________
Static pressure drop __________
L. Temperature rise after steady state conditions have
been achieved: Supply side _______ Return side ______
M. Block off return air (limit control checkout); burner
should shut down in 2 or 3 minutes ___________
Owner Record
Installed By: _____________________________________
Dealer _______________________________________
Address _______________________________________
_______________________________________
_______________________________________
Telephone # _____________________________________
License # ________________________________________
1900 Wellworth Ave.
Jackson, MI 49203
www.marsdelivers.com
www.heatcontroller.com
These checks or tests are required for all oil units.
2
Installation and Operation Manual - ODF, ODR, OUF, OLF & OLR Series
INSTALLATION
Read all instructions before starting work so installation will
conform to Underwriter’s Laboratories or Canadian
Standards Association requirements. The furnace must be
level when placed on its foundation (upflow, counterflow, and
basement models) or in its suspended position (horizontal
models). Using a carpenter’s level, check the furnace in at
least two directions. The weight must be distributed evenly
before the duct work is attached.
These instructions must be placed on or near the
furnace in a conspicuous place.
Inspection of Shipment
This furnace is shipped in one package, completely
assembled and wired. The thermostat is shipped in a
separate carton when ordered.
Upon receipt of equipment, carefully inspect it for possible
shipping damage. If damage is found, it should be noted on
the carrier’s freight bill. Damage claims should be filed with
the carrier immediately. Claims of shortages should be filed
with the seller within 5 days.
Location
Locate the furnace as centrally as possible so that all warm
pipes to the various rooms are nearly the same length. This
allows each room to receive an equal and proper amount of
heat. This may vary with each particular installation. Position
the furnace so the pipe connection to the chimney will be of
minimum distance and have a minimum of fittings.
In utility rooms or similar installations, the door or access
opening should be large enough to permit replacement of
the furnace, or another appliance such as a water heater,
without disturbing any other equipment.
WARNING
In any installation where damage from oil may occur, a
drain pan must be installed. The drain pan must be
large enough size to completely prevent any potential
oil damage. The drain pan piping must be sized to drain
the oil pump capacity and the piping must be routed to
drain the oil back to the oil tank.
Clearances
A minimum of 24" is recommended in front of the furnace
for servicing the burner on all models.
See Table 2 on page 4 for a complete listing of the minimum
clearances required for basement type and upflow
installations. See Figure 2 on page 5 for the minimum
clearances required for horizontal installations and Figure 3
on page 5 for the minimum clearances required for
counterflow installations. When accessibility clearances
are greater than fire protection clearances, the
accessibility clearances take precedence.
OUF, OLF
* A passage, suitable for a large
ODF
3
person, shall be provided
between the furnace and
chimney for inspection or
replacement of the ue
connector when necessary.
A clearance of 24” shall be
allowed at the rear and on one
side of the furnace for service
and cleaning of the blower.
** The minimum clearance
shown to the ue pipe may
be reducted by using spectial
protection permitted by local
building codes and National
Fire Association Standards and
CSA 139.
Installation and Operation Manual - ODF, ODR, OUF, OLF & OLR Series
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B
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A
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C
Non-Suspended Horizontal Installation
To support the furnace from below, set the furnace on noncombustible material suitable to support the weight of the unit.
Using a carpenter’s level, check furnace in at least two
directions. To make adjustments, use shims of noncombustible material. Seven inches minimum clearance
between the bottom of the flue pipe and combustible material
is required. Installation on a combustible floor requires a 1"
clearance from the floor for units with a front flue and a 4"
clearance from the floor for units with a rear flue.
Horizontal Installation Reversing the Air Flow
This furnace is assembled to discharge warm air out the left
side (when viewed facing the burner side of the furnace). If
installation requires that the flow be reversed, follow these
steps:
1. Rotate the furnace 180° so that the warm air is
discharged out the right side.
2. Remove the oil burner and the screws securing the
burner mounting plate. Rotate the burner mounting plate
180° and reattach with screws. Remount the burner in
the upright position.
3. Remove the screws holding the limit control in place.
Relocate the limit control to the top side of the front panel
using the knockout hole provided.
Counterflow Installation
This furnace is assembled to discharge warm air out the left
side (when viewed facing the burner side of the furnace). To
convert to counterflow:
Horizontal Installation
Top View
Supply Return
Supply
Front View
A poT "1 "4
B t c uD "1 "6
C sed i S "1 "6
D mo t t o B "1 "4
E r a eR "1 " 42
F t no r F " 42 " 42
G eu l F "7 "9
Return
521-48
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1. Rotate the furnace so the return is on top and the supply
is on bottom.
2. Remove the oil burner and the screws securing the
burner mounting plate. Rotate the burner mounting plate
90° clockwise and reattach the screws into the
heat exchanger. Remount the burner.
3. Refer to Figure 2 for minimum clearances required.
When installing a counterflow unit on combustible
flooring, a combustible floor base must be used. See
Figure 3 on page 6 for more information on using a
combustible floor base kit.
Figure 1
4
Installation and Operation Manual - ODF, ODR, OUF, OLF & OLR Series
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Counterflow
(Closet Installation)
A sed i S "1
B poTmune l Pn r u t eR 0
C ed i Smune l Py l ppuS "1
D ed i Smune l Pn r u t eR 0
E
F t no r F " 61
G r a eR "1
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J poT 0
Combustible Floor Installation –
Counterflow Units
Cold Air
Duct
Blower
Comparment
Burner
Combustible
Sub-base
Insulation
Slab Flooring
(12" minimum)
Warm Air Plenum
Floor Base
Joist
"1
* The minimum clearance shown to the flue pipe may be
reduced by using special protection permitted by local building
codes and National Fire Protection Association Standards
and CSA 139.
A minimum of 24" must be provided in the front of the furnace
for servicing the burner and filter. A passage suitable for a large
person shall be provided between the furnace and chimney for
inspection or replacement of the flue connector when necessary.
Figure 2
Kits are also available for counterflow applications where a
vestibule cover is needed for safety reasons.
Vestibule cover kits:
Kit for 57/72 & 84/95 counterflow models – AVEST547-1
Kit for 112/125 counterflow models – AVEST548-1
Figure 3
It is very important that the furnace be exactly level since a
level unit is necessary for proper fitting of parts. Using a
carpenter’s level, check the furnace in at least two directions.
If the furnace is not level, place fireproof wedges or shims
between the low side of the furnace and the floor and check
again with the level. The weight of the unit must be distributed
evenly on all four corners.
Air Conditioning
WARNING
When an air conditioning unit is used in conjunction with
the furnace, the evaporator coil must be installed in the
discharge (supply) air. Do not install an evaporator coil
in the return air; excessive condensation will occur within
the furnace.
5
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