FireLake 155 User manual

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Owner's
Manual.
Multi-Oil
Furnaces
MODELS
155, 200, 245, 315 ; 235, 350, & 500
(Single pass ; 3-Pass Units)
All Installations Must Be In Accordance With State and Local Codes and it is the responsibility
of the installer to assure all codes are met
Date Installed:
WARRANTY NOTICE
Use of equipment on any equipment not manufactured or designed for
use VOIDS the warranty - property or personal damage could occur.
For service, call your dealer or installer at

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Created: May 2007 Revised: 9.14.2011
Table of Contents
SPECIFICATIONS .......................................................................................................................................................... 3
PACKING LIST ............................................................................................................................................................... 5
COMPONENT IDENTIFICATION............................................................................................................................... 5
FIELD ASSEMBLY INSTRUCTIONS - BLOWER................................................................................................... 12
FIELD ASSEMBLY INSTRUCTIONS - BURNER.................................................................................................... 13
HEATER INSTALLATION PROCEDURE................................................................................................................ 14
INSTALLATION ILLUSTRATION –VERTICAL CHIMNEY ................................................................................. 15
ALTERNATE STACK INSTALLATION WITH INDUCER.................................................................................... 16
COMPRESSED AIR SUPPLY...................................................................................................................................... 17
OIL PUMP MOUNTING............................................................................................................................................... 17
FINISHING THE PLUMBING……............................................................................................................................ 17
ELECTRICAL CONNECTIONS ................................................................................................................................. 20
INITIAL START UP AND OPERATING SEQUENCE ............................................................................................ 33
FAN LIMIT SWITCH SETTINGS............................................................................................................................... 35
FINE TUNING THE BURNER .................................................................................................................................... 36
PRIMARY CONTROL FUNCTION - SAFETY LOCKOUT ................................................................................... 37
ROUTINE HEATER AND BURNER MAINTENANCE........................................................................................... 38
WEEKLY MAINTENANCE ............................................................................................................................................... 38
BURNER......................................................................................................................................................................... 38
ASSEMBLY OF NOZZLE ............................................................................................................................................ 39
ASSEMBLY OF OIL AND AIR SOLENOID #57190 ................................................................................................ 40
ASSEMBLY OF OIL REGULATOR #57129 ............................................................................................................. 41
END OF HEATING SEASON/SUMMER STORAGE............................................................................................... 43
TROUBLE – SHOOTING GENERAL ........................................................................................................................ 44
PARTS REPLACEMENT IDENTIFICATION .......................................................................................................... 65
HEATER PARTS LIST................................................................................................................................................ 47
FIRELAKE’S WARRANTY......................................................................................................................................... 71

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SPECIFICATIONS
Model 'A' Oil Pump Model 'J' Oil Pump
1/4 " FNPT Inlet Port 1/4 " FNPT
1/8 FNPT Outlet Port 1/8 " FNPT
40-60 PSI Pressure Range 20-40 PSI
6 GPH Max. Flow 18 GPH
3450 RPM Max Allowable Speed 3450 RPM
1/4 HP 1/4
CW Shaft End Rotation CW Shaft End
20” Hg Max Operating Vacuum 20" Hg
10’ Vertical Maximum Suggested Lift 10' Vertical
<30’, use 3/4” pipe Horizontal Suction Piping <30', use 3/4" pipe
30-90’, use 1” pipe Horizontal Suction Piping 30-90', use 1" pipe
Maximum Fuel Consumption Model U.S. Gal./Hr. liters/hr Model U.S. Gal./Hr. liters/hr
155 1.1 4.2 200 1.43 5.41
Model U.S. Gal./Hr. liters/hr 245 1.75 6.62 315 2.25 8.52
235 1.6 6 350 2.5 9.46 500 3.6 13.6
Air Pump (Burner mounted, fits all but Mdl 350, 500) 3450 rpm, filtered inlet, 20 psi discharge.
Minimum Heater Clearances
Above: 6"(15cm) Inlet Blower: 18"(46cm) Rear: 18"(46cm) Chimney Connector: 18"(46cm)
Below: 18"(46cm) Outlet Louver: 84"(2.1m) Front: 24”(61cm)
Cabinet Dimensions (includes stack collars but not blower or burner)
Model Length Width Height Weight Hot Air Outlet
155 66”(1.67m) 22”(56cm) 18”(46cm) 150#(68kg) 15” sq. (38cm)
200 79”(2m) 22”(56cm) 22”(56cm) 167#(76kg) 15” sq. (38cm)
245 82”(2.1m) 26”(66cm) 22”(56cm) 200#(91kg) 18” sq. (46cm)
315 96”(2.5m) 26”(66cm) 22”(56cm) 256#(116kg) 18” sq. (46cm)
235 42”(1.1m) 32”(0.8m) 33”(84cm) 350#(160kg) 23x29”(58x74cm)
350 55”(1.4m) 52”(1.32m) 33”(84cm) 800#(364kg) 23x29”(58x74cm)
500 55”(1.4m) 52”(1.32m) 33”(84cm) 800#(364kg) 23x41”(58x104cm)
Overall Dimensions of Heater with Burner and Blower
Model Length Width Height Weight
155 79.5”(2.0m) 22”(56m) 34.5”(88cm) 234#(106kg)
200 92.5”(2.3m) 22”(56m) 34.5”(88cm) 251#(114kg)
245 95.5”(2.3m) 26”(66m) 41”(1m) 348#(158kg)
315 109.5”(2.8m) 26”(66m) 41”(1m) 348#(158kg)
235 52”(1.3m) 42”(1.1m) 33”(0.84m) 480#(217kg)
350 59”(1.5m) 62”(1.57m) 33”(0.84m) 927#(421kg)
500 59”(1.5m) 62”(1.57m) 33”(0.84m) 927#(421kg)
Construction and Specifications: Certified by UL and filed in MH16601 (US & Canada)
Heat Exchanger : Stainless and/or aluminized steel. Exhaust collars 8” (20cm), 10” (25.4cm) model 500.
Stack allows connection to either side (except 350,500). Cap provided must be installed on unused collar.
Cabinet : Mill coated appliance grade painted steel. The louvered opening may be rotated and/or placed
on either side and filler panel is provided and installed on the side opposite the outlet (Except model 350,
500). Burner is attached to a hinged door that allows for easy clean out as well as inspection of nozzle area.
Blower HP (Min.) : Μodel 15, 20, 35: 3/4 HP. Model 24, 31, 50: 1HP

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INTRODUCTION
Purchase of a multi-oil furnace is a wise investment. To maximize the return on this investment you
must read and save this manual. It contains installation instructions, diagnostic procedures, burner
cleaning, maintenance procedures and parts ordering information. Follow the installation
instructions carefully. You can expect years of reliable performance with a properly installed and
maintained system.
This furnace is: not for residential use; burns only oil generated on premise unless regulating
authorities give written permission; required to have monthly ash removal from heat exchanger and
flue; required to have monthly oil feed systems cleaned; required to have cleaning done by persons
using proper protective clothing like masks and gloves; required to have only qualified service
people adjust controls; requires a oil feed valve near the tank to be closed when burner is not being
used over extended periods; to be installed by a qualified installer, one who is engaged in,
responsible for or thoroughly familiar with the permitting, installation and operation of oil-fired
appliances, who is experienced in such work and is familiar with the precautions required, and who
will comply with all the requirements of the Authority having jurisdiction over the installation.
Refer to details in this manual for other information.
The installation of equipment in the United States must consider the requirements of the following
publications of the National Fire Protection Association, Battery March Park, Qunicy,
Massachusetts 02269:
N.F.P.A. No. 30 Flammable and Combustible Liquid Codes
N.F.P.A. No. 31 Standard for Installation of Oil Burning Equipment
N.F.P.A. No. 88A Standard for Parking Structures
N.F.P.A. No. 88B Standard for Repair Garages
N.F.P.A. No. 211 Standard for Chimney, Fireplaces, Vents and Solid Fuel Burning Appliances
The installation of Equipment in Canada must consider the requirements of C.S.A., Standard B 139,
B140, Installation Code for Oil Burning Equipment.
This heater is recommend for burning #2 fuel oil, used; motor oil, automatic transmission fluid,
hydraulic oil and gear oil mixed not to exceed 50 SAE. Such oils may contain gasoline and specific
precautions on the handling and storage of waste oils are to be observed.
Do Not add to oil supply or burn: unknown garbage oils, gasoline, naptha, chlorinated cleaning
solvents or oil additives in this furnace.
Unpacking Heater Components
The heater should be completely removed from its shipping crate. Remove all bolts attaching the
wood runners to the heater. Brackets can be left on heater for mounting heater to tank, wall, or
suspended frame. Remove cleaning tool and parts from inside the chamber prior to installing
heater. Be prepared to experience operating problems such as plugged nozzles, suction line leaks,
etc. during the first few weeks of use. Follow start up instructions for purging fuel and air lines to
help avoid these problems.

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PACKING LIST
Components of a Model 155, 200, 245, 315 Heater:
Crated Heat Exchanger with Cabinet (remove clean out tool and parts from inside the chamber)
Burner (factory test fired burner in shaped foam packaging, save box should shipping be needed)
Blower Assembly (Save box.)
Accessory Carton (Cleanable Oil Filter, 1/2" Cutoff valve, 3/4" Suction Screen, 3/4" Check Valve,
Wall Thermostat, 1/2” x 1/4” Swivel, 3/4” x 1/2” Swivel, 1/4” x 1/4” x 1/8” Tee, 1/4” x 1½” Hex
Nipple, 1/2" x 2 Hex Nipple, 1/4" x 2" Nipple, Warranty Card & Manual , (2) Pressure Gauge)
Barometric Damper (for chimney)
Oil Transfer Pump
COMPONENT IDENTIFICATION
Crated or Boxed Exchanger Burner (appearance varies by model)
Cleanout Tool w/Hoe & Blower Assembly Oil Pump
Barometric Damper
Accessory Carton

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Components of a Model 235, 350, 500 Heater:
Heat Exchanger with Cabinet (remove fan, accessories, & target from inside the chamber)
Burner (factory test fired burner in shaped foam packaging, save box should shipping be needed)
Accessory Carton (Cleanable Oil Filter, Fan Motor, 1/2" Cutoff valve, 3/4" Suction Screen, 3/4"
Check Valve, Wall Thermostat, 1/2” x 1/4” Swivel, 3/4” x 1/2” Swivel, 1/4” x 1/4” x 1/8” Tee, 1/4”
x 1½” Hex Nipple, 1/2" x 2 Hex Nipple, 1/4" x 2" Nipple, Warranty Card & Manual , (2) Pressure
Gauge)
Barometric Damper (for chimney)
Oil Transfer Pump
Fan
Heat Exchanger w/ Cabinet
Remove this cabinet panel to slide out fan, accessories carton, damper, and access target.
BURNER (appearance varies by model)

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MODEL 155, 200, 245, 315
HEATER COMPONENTS IDENTIFICATION
STACK OUTLET BLOWER LOUVER PANEL
(STACK CAP OPPOSITE SIDE) (BLANK PANEL OPPOSITE SIDE)
BAROMETRIC DAMPER
STACK BURNER DOOR
SIDE PANEL BASE DOOR GASKET VIEW PORT BURNER
(2) Bolt on brackets each end for attaching to framework or rods. Can be put on lower edge too.
BLOWER/GUARD FAN SWITCH 6 X 6 ELECTRICAL BOX
CORD LOCKING CLAMP BEHIND BRACKET PREVENTS BURNER DOOR FROM
OPENING WHILE POWERED. TAKE SLACK FROM CORD WHEN INSTALLING.

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MODEL 235, 350, 500 HEATER COMPONENTS IDENTIFICATION
LOUVERS (HOT AIR OUTLET) (LOUVERS ARE NOT USED WITH DUCTED MODELS)
FAN CONTROL (OFTEN CALLED FAN LIMIT SWITCH)
ELECTRICAL AND FAN RELAY JUNCTION BOXES
VIEW PORT HINGED BURNER MOUNT CLEANING ACCESS PANEL
FAN OPENING
STACK COLLAR EXCHANGER CLEANING ACCESS PANEL

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MODEL 235, 350, 500 AIR MOVER ASSEMBLY INSTRUCTIONS
PROPELLER FAN ASSEMBLY
Remove fan motor from carton, attach it to the wire fan guard using motor studs and nuts/washers.
Place fan blade on shaft, hub away from motor. Allow 1.5” clearance from wire guard to blades.
Fan will flex toward motor when running. Secure blade to shaft snugly using set screws. Mark
shaft to show hub’s position. Align motor’s conduit to reach electrical box. Align guard/fan
assembly to pilot holes on rear cabinet panel, attach with screws. Fan blades must not contact
heater parts when turning. After one day check the shaft mark regarding hub’s position. If it
has moved, reset and tighten set screws.

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MODEL K5 (w/Air Pump) BURNER COMPONENTS IDENTIFICATION
(Actual parts may look different as Firelake often updates components to latest technologies)
AIR FILTER AIR PRESSURE SWITCH OIL PRESSURE GAUGE&REGULATOR
OIL FEED PIPE IGNITER SAFETY
AIR PUMP OUTLET AIR PRESSURE ADJUSTING VALVE AIR GAUGE
COMBUSTION AIR INLET PORTS
NOT SHOWN IN ABOVE VIEW, THIS BURNER ALSO HAS A PRIMING TOGGLE SWITCH,
SAFETY RESET BUTTON, FLAME RETENTION HEAD, AIR CONTROL BOX, &
INDICATOR LIGHTS LIKE MODEL B5 BURNER (no Air Pump) PICTURE SHOWS.

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MODEL B5 BURNER COMPONENTS IDENTIFICATION
(Actual parts may look different as Firelake often updates components to latest technologies)
IGNITION CONTROL (PRIMARY CONTROL) FLAME RETENTION HEAD
OIL REGULATOR W/OIL CONNECTION
COMBUSTION AIR INLET BANDS IGNITOR / TRANSFORMER
BURNER MOUNT FLANGE RESET BUTTON
PRIMING SWITCH
OIL, NOZZLE PRESSURE
SLIDE GUN ASSEMBLY COMPRESSED AIR
AIR CONTROL BOX SUPPLY CONNECTION
INDICATOR LIGHTS (3) AIR , NOZZLE PRESSURE
AIR REGULATOR (COMPRESSED AIR)

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FIELD ASSEMBLY INSTRUCTIONS – MODEL 155/200/245/315 BLOWER
Air Deflector Flat Side of Blower
1. Position the Air Deflector, already in the cabinet, so that the upper lip sticks out of the
cabinet near the burner end. The lower ends of the Air Deflector are curved to direct the
path of the air from the blower to the chimney end. It also creates a barrier to prevent the
blower air from bypassing the body of the heat exchanger and going directly to the louvered
outlet. NOTE: Small gaps are acceptable between the air deflector, cabinet, and fire
chamber.
2. Place the blower in the square opening on the top of the heater so that the top of the air
deflector is pinched between the blower housing and edge of the cabinet opening. The
blower is placed so that the flat blower housing side is facing the burner. The blower is then
secured to the top of the heater with (4) cap screws through the weld nuts in the cabinet.
3. The fan limit switch attached to the 6 x 6 inch electrical box is factory located in a knockout
hole beside the blower. Tighten all electrical conduit connections and confirm wires are
secured in terminals.
4. The louvered panel and filler panel are interchangeable to control heated air discharge.
5. The stack cap fits both stack outlets and is to be secured to the opposite side of where the
chimney will connect. Use two screws to hold the cap or it may work loose over time.

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FIELD ASSEMBLY INSTRUCTIONS - BURNER
Upper fins are open to allow light to cad cell
7/16” center of nozzle to electrode 1/8” to 3/16” closest gap
1) PRIOR TO INSTALLING BURNER, CHECK FOR SHIPPING DAMAGE TO
FLAME RETENTION HEAD AND IGNITION ELECTRODE ALIGNMENT .
2) If components are not as shown you can make adjustments to the electrodes by removing the
hole plug on top of burner tube near mount flange. With screw driver, loosen the screw
holding the electrode clamping plate. Adjust electrodes as shown. Re-tighten clamp
screw. Do not over tighten or insulation on electrodes may crack. Examine electrode
position after tightening to be sure position has not changed. Replace hole plug.
3) The electrodes should not touch surrounding metal parts or be too close together as they will
restrict or divert the arc and not light the oil spray.
4) Position the large white insulation gasket(s) found in the blower carton between the furnace
door and the face of the heat exchanger. Some models may have them factory installed.
Pinch gasket with door and secure door with two nuts. Gaskets not used on model 350, 500.
5) Attach burner to furnace door/swing plate. Grasp burner by the mount flange and motor,
slip burner’s flange over studs on hinged burner door and secure with nuts.

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HEATER INSTALLATION PROCEDURE
1) Select a location for your heater observing minimum clearance to combustibles. Consider
that maintenance and cleaning will be required. Allow adequate work space around burner
and stack. Mount heater as low as code allows, easing service and keeping your heat at
floor level. Select a noncombustible area or observe minimum clearances to combustibles.
2) For best operation minimize distance of horizontal chimney runs. Do not exceed 8' in
length. Horizontal runs must have a minimum 1/4" rise per foot. Clean horizontal runs
every 500 hours of use or as needed. Ash will accumulate here and block draft. Poor
draft causes poor flame, backpressure, oily buildup, unreliable ignition. Use a draft inducer
if draft is marginal or inconsistent. Negative pressure is a must in the flame area.
3) If suspending the heater use (4) 3/8, 1/2, or 5/8 diameter all-thread and tie into the provided
brackets at each end of the cabinet. The mount brackets are designed to attach at the top or
bottom of the heater ends to meet various field mounting needs. Lock nuts and washers
should be used for safety. Never let the weight of the heater rest on the weaker center
portion of cabinet bottom, cabinet will flex. The larger models are more prone to this.
4) WASTE OIL FURNACES ARE DEPENDENT ON PROPER DRAFT FOR EFFICIENT
BURNING. ASSURE THAT ADEQUATE MAKE-UP AIR IS AVAILABLE. NEGATIVE
DRAFT REQUIREMENT: -.04 TO -.06 INCHES OF WATER COLUMN AT FURNACE
OUTLET. BUILDING EXHAUST FANS OR COLD BUILDINGS AT NIGHT CAN
REVERSE YOUR DRAFT AND CAUSE FUMES, POOR COMBUSTION, OR
NUISANCE BURNER LOCKOUTS. TAKE MEASURES TO ASSURE FURNACE
WILL HAVE PROPER DRAFT DIRECTION WHEN OPERATING.
5) If permanent masonry chimney is not available, use appropriate diameter multi-wall
manufactured chimney and collars listed for use with oil fired furnaces per UL 103 or All
Fuel Class A. Locate for easy connection to the furnace and install per manufacturers'
instructions and local building and fire codes. Normal operation will produce a gross
chimney temperature between 500F and 750F.
6) The chimney must extend a minimum 3' above the highest roof line within 10'. In general
you will need a minimum of 2 feet of vertical for each foot of horizontal for best draft.
7) Use a stack that is equal diameter to the furnace outlet. Use minimum 24 gauge single wall
connector pipe between furnace outlet and damper. Do not allow rain to come down the
chimney and have a path into fire chamber. This will create a rusting environment. Install
a chimney tee near the furnace to act as a cleanout / water trap.
8) Locate barometric damper near the furnace and face away from blower. Its opening must be
visible from the floor and out of strong air flows that could falsely affect its ability to
regulate. Read instruction sheet included with damper.

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INSTALLATION ILLUSTRATION, ALL MODELS –VERTICAL CHIMNEY
CAUTION with ALL HEATERS & CHIMNEYS
Allow for adequate make-up air to enter the room where the burner operates. Allowing for a
opening of 140 square inches per gallon of fuel consumed is normal. Starving the burner of air is
more likely in smaller, and well insulated weather tight rooms.
In poor natural draft conditions a draft inducer placed near the
outlet can be used to improve poor draft conditions and
should be placed as near the roof as possible. Inducers will
pull air better than push it. A 1/4 HP like Grainger 4C732
or is suggested. Smaller HP inducers and squirrel cage
types will not be strong enough in some chimney installations.

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ALTERNATE HORIZONTAL STACK INSTALLATION ALL MODELS USING INDUCER
• Confirm local building codes will allow inducers & side wall vent
• Locate inducer as close to where chimney exits building as practical
• Never allow rain or condensation to flow back into heater
• Taper end of stack to keep rain out
• Place a screen (1/2” or 3/4” openings) over stack to keep animals out
• Extend stack away from building 18” or beyond gutters and eves
• Observe clearance to combustible materials

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COMPRESSED AIR (applies to Model B5 burner only, the K5 burner has
integral air pump)
1. A minimum 2 CFM at 40 psi is needed into the burner. Use a hydraulic quick disconnect
or put ample flex in the line to swing burner open when servicing. A dedicated air
compressor at the heater in lieu of using the shop’s air system is acceptable. A compressor
of 3/4 to 1.5 HP is typical, with a storage tank is a plus. Consult your installer for models
available. Drain all compressors frequently to help keep moisture from entering burner.
2. Many burner service problems are from “rusty” air causing burner components to fail. It is
wise to use a oiler and/or regulator to treat & reduce air pressure entering the burner to
approximately 60 psi. Wear on burner parts will be reduced and ignition more reliable.
Providing a drip leg with valve near the burner to trap water, scale, and rust is also a good
idea. If water is present take all measures to remove it. The air solenoid may stick and
other components may rust and fail.
3. SERVICE TIP: 80% of service problems can be avoided by keeping contaminants like rust
chips, water, pipe dope, insects from reaching burner through the air and oil lines.
OIL PUMP MOUNTING
1. Consult your dealer for best plumbing methods before starting. Mount the pump as near
the oil supply tank as possible. Minimize suction distance or lift for best operation. You
may mount the pump above the tank to suction lift oil to the pump or another option is to
place the pump below the tank level to gravity feed or siphon oil to the pump. Do not
exceed 10 psi into the pump inlet in any arrangement or the seal may leak. Allow space for
service. Be sure to meet all building and fire code requirements.
2. Any pump/motor orientation is acceptable as long as the pump shaft is horizontal. You
may rotate the pump head on the mount to simplify plumbing connections. Be sure the
motor and pump shafts are aligned and coupling set screws are tight before operating.
Above Tank Mount Below Tank Level Mount

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FINISHING THE PLUMBING…….
J Pump A Pump
.1/8” Outlet Air Bleeder .1/4” Inlets Air Bleeder .1/8” Outlet .1/4” Intlet
Pressure Adj. Pressure Adj.
[ If Using a CDVF Pump follow instructions in CDVF Manual ]
Consult your dealer for the best plumbing arrangement for your heater. There are many ways the
plumbing can be done. Use pipe dope on threads, not tape ! Flared tubing & fittings are
acceptable, never use compression fittings ! Meeting building codes and your needs may require
deviation from the fittings provided in your accessory carton and described in the example below.
Components shown are provided with standard heater purchases and found in Accessory Carton.
With new J1000 pumps 1/4x1/8 & 1/2x1/4 bushings provided for use in pump ports.
3/4 FPT Filter Gauges 3/4x1/2 Swivel 1/2 Nipple Pump 1/4 Nipple 1/4x1/4x1/8 Tee
Oil Regulator on Burner
Note Flow Arrow 1/4 Nipple
Suction Strainer 3/4 FPT Check Valve 1/2 FPT Valve 1/2x1/4 Swivel

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Suction Line: Field provides piping from Check Valve to Filter. Note Check Valve has flow
direction arrow. Secure piping to keep the Strainer 6”+ off the bottom of the tank. Plan ahead
for routine service of components. Use minimal number of fitting to reduce chances of suction
leaks. Consult your dealer’s experience for methods that work in your application. TIP: It is
wise to fill the filters/plumbing on the suction side of the pump with clean oil prior to priming the
system. This will minimize priming time and save wear on pump seals.
Pressure Line (Oil Pump Outlet): After the provided Nipple/Tee/Gauge the 1/4” Check Valve
may be installed to help keep oil pressure for the burner. The field provides tubing or piping to
reach from here to the 1/2" Valve near the Burner. A 3/8 inch or 1/2 inch FLARED (never use
compression) soft copper tubing is commonly used. Hard metal tubing or metal pipe is acceptable
but may incur more cost, has more potential for leaks, and is not flexible to swing the burner open
for routine cleaning. Consult your dealer on sizing for your application.
Try to run the oil piping uphill from the pump to the burner to allow entrapped air to escape at the
burner. Avoid high spots in the oil piping or looping the line above the burner as this creates a
trap and collects air. Collected air will delay the oil getting to the nozzle, causing a weak flame,
slow or failed ignition, or pressure gauge and flame pulsation.
[ TIP: spiral or loop some excess tubing at the burner to allow the burner door to swing open w/o
having to disconnect the oil line tubing.
Do not connect oil line to Valve at the Burner until after the oil line is purged of dirt and air.
[Suggestion: to ease future oil line purges, adding a tee and drain cock near the burner allows dirt
and air to be purged without disconnecting the line from the burner.]

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ELECTRICAL CONNECTIONS MODELS 155, 200, 245, 235, 315, 350
All electrical wiring must meet National Electrical Code, N.F.P.A. #70 for furnaces installed in
U.S., and C.S.A. Standard C22.1, Canadian Electrical Code, Park 1, for Canada.
Install a panel mounted breaker for single phase 115V max 30 AMP grounded service. Run
minimum of 10 gauge wire in metal conduit to the 6” x 6” junction box at furnace. Do this with
the power still “OFF”. TIP: If the main breaker is far from the heater, installing a manual switch
or breaker near the heater may be required by code. It is also handy for cutting main power in an
emergency or for servicing.
For field wiring of oil pump and accessories use min 14 gauge wiring.
[ BOLD Print is Field Wiring ]
Main power feed from panel; Hot, Neutral, Ground Prewired Blower Hot, Neutral
Oil Pump Hot, Neutral
(hot is opposite red burner wire)
Prewired Fan Limit Black, Blue, and Red Prewired Burner Cord
(blue feeds black burner, red feeds blower)
1. Connect burner power cord coming from junction box to mating connection on burner. Do
note force internal moldings, they permit only one orientation of connection. Tighten
locking ring to secure. Run cord through clamp located on top of cabinet, remove
slack from burner cord, clamp and secure. This will prevent burner door from
swinging open and burner capable of firing. Disconnect molded cord to open door
and service burner.
2. Install the room wall thermostat in work area to be heated. Mount it level or accuracy of
settings will be affected. Run 18-2 wire between the thermostat , the snap disc on cabinet ,
and screws labeled T-T on primary control. Set the room thermostat in the “OFF” position.