Dettson OMF098J10B Montageanleitung

Printed on 100% recycled paper 2012-04-05 X40141 Rev. M

OIL FIRED FURNACE

MULTIPOSITION

INSTALLER / SERVICE TECHNICIAN :

USE THE INFORMATION IN THIS MANUAL FOR THE

INSTALLATION / SERVICING OF THE FURNACE AND KEEP

THE DOCUMENT NEAR THE UNIT FOR FUTURE REFERENCE.

HOMEOWNER:

PLEASE KEEP THIS MANUAL NEAR THE FURNACE FOR

FUTURE REFERENCE.

MODELS :

OMF098J10B

OMV098J12B

Attention :

Do not tamper with the unit or its

controls. Call a qualified service

technician.

Manufactured by:

Dettson Industries inc.

3400 Industrial Boulevard

Sherbrooke, Québec, Canada, J1L 1V8

www.dettson.ca

DNS-1082 Rév. A

TABLE OF CONTENTS

SAFETY REGULATIONS...........................................3

1.1 SAFETY LABELING AND WARNING SIGNS ............................3

1.2 IMPORTANT INFORMATION......................................................3

1.3 DETECTION SYSTEMS ................................................................3

1.4 DANGER OF FREEZING...............................................................3

2. INSTALLATION..............................................................4

2.1 POSITIONING THE FURNACE ................................................4

2.1.1 Installation in an enclosure................................................4

2.2 CONFIGURATIONS ..................................................................4

2.2.1 Upflow Installation............................................................4

2.2.2 Downflow Installation .......................................................5

2.3 ELECTRICAL SYSTEM............................................................5

2.4 INSTALLATION OF THE THERMOSTAT...............................5

2.5 INSTALLATION OF THE BURNER.........................................6

2.5.1 Nozzles..............................................................................6

2.5.2 Air and Turbulator Settings...............................................6

2.5.3 Post purge delay adjustment..............................................6

2.6 VENTING...................................................................................6

2.6.1 Masonry chimney..............................................................7

2.6.2 Factory Built Chimneys.....................................................7

2.6.3 Draft Regulator..................................................................7

2.7 BLOCKED VENT SHUT-OFF DEVICE (BVSO) FOR

CHIMNEY VENTING................................................................7

2.8 COMBUSTION AIR SUPPLY AND VENT...............................7

2.8.1 Contaminated Combustion Air..........................................7

2.8.2 Burner with Outdoor Combustion Air Kit.........................8

2.9 OIL TANK..................................................................................8

2.10 DUCTING...................................................................................8

2.11 SUPPLY AIR ADJUST. (4 SPEED MOTORS)..........................8

2.12 SUPPLY AIR ADJUST.(ECM VAR.SP. MOTORS)..................9

2.13 INSTALLATION OF ACCESSORIES .......................................9

2.13.1 Humidifier (HUM)............................................................9

2.13.2 Electronic Air Cleaner (EAC)............................................9

2.13.3 Air Conditioner (or Heat Pump)......................................10

OPERATION ..............................................................10

3.1 START-UP................................................................................10

3.2 OPERATING SEQUENCE OIL HEATING MODE.................10

3.3 CHECKS AND ADJUSTMENTS.............................................10

3.3.1 Purging the oil line..........................................................10

3.3.2 Pressure adjustment.........................................................10

3.3.3 Combustion Check..........................................................11

3.3.4 Draft Regulator adjustment .............................................11

3.3.5 Overfire pressure test.......................................................11

3.3.6 Vent Temperature Test....................................................11

3.3.7 Supply Air Temperature Rise Test ..................................11

3.3.8

Limit Control Check......................................11

3.3.9

Restart after Burner Failure...........................11

MAINTENANCE........................................................12

4.1 CLEANING THE HEAT EXCHANGER..................................12

4.2 CLEANING THE BLOCKED VENT SHUT-OFF DEVICE

(BVSO).....................................................................................12

4.3 CLEANING

THE

BURNER

HEAD....................................12

4.4 CHANGING THE NOZZLE.....................................................12

4.5 CHANGING THE OIL FILTER................................................12

4.6 CHANGING THE AIR FILTER................................................12

FURNACE INFORMATION ....................................13

TABLES

Table 1: Blower speed adjustments (4-speed motors) ............8

Table 2: Supply air adjustments, ECM variable speed

motors, heating mode......................................................9

Table 3: Supply air adjustments, ECM variable speed

motors, air conditioning mode ........................................9

Table 4: CFM adjustments, all modes.....................................9

Table 5: Delay adjustments - heating mode............................9

Table 6: Technical specifications..........................................14

Table 7: Airflow data, models with 1/2 HP ECM motors.....15

Table 8: Airflow data, models with 1/3 HP PSC motors ......16

Table 9: Minimum clearances from combustible materials ..16

Table 10: Parts list with 4-speed motor (PSC)......................21

Table 11: Parts list with variable speed motor (ECM)..........23

FIGURES

Figure 1: Location and dimensions of ventilation air

openings in a closet door.................................................4

Figure 2: Upflow installation..................................................4

Figure 3: Downflow installation .............................................5

Figure 4: Horizontal installation .............................................5

Figure 5: Thermostat wiring, heating and air conditioning

with 4-speed motor .........................................................5

Figure 6: Thermostat wiring heating and air conditioning

with ECM variable speed motor .....................................6

Figure 7: Thermostat wiring, heating and air cond. heat

pump with ECM v. speed motor .....................................6

Figure 8: Blower start/stop delays...........................................9

Figure 9: Furnace dimensions...............................................17

Figure 10: Wiring diagram, 4-speed motor (PSC)................18

Figure 11: Wiring diagram, variable speed motor (ECM)....19

Figure 12: Parts list with 4-speed motor (PSC).....................20

Figure 13: Parts list with variable speed motor (ECM).........22

1.SAFETY REGULATIONS

1.1 SAFETY LABELING AND

WARNING SIGNS

The words DANGER, WARNING AND CAUTION are used to

identify the levels of seriousness of certain hazards. It is

important that you understand their meaning. You will notice

these words in the manual as follows:

DANGER

Immediate hazards that WILL result in death, serious

bodily injury and/or property damage.

WARNING

Hazards or unsafe practices that CAN result in death,

bodily injury and/or property damage.

CAUTION

Hazards or unsafe practices that CAN result in bodily injury

and/or property damage.

1.2 IMPORTANT INFORMATION

WARNING

Non-observance of the safety regulations outlined in this

manual will potentially lead to consequences resulting in

death, serious bodily injury and/or property damage.

It is the homeowner’s responsibility to engage a

qualified technician for the installation and

subsequent servicing of this furnace;

b) Do not use this furnace if any part of it was under

water. Call a qualified service technician immediately

to assess the damage and to replace all critical parts

that were in contact with water;

c) Do not store gasoline or any other flammable

substances, such as paper, carton, etc. near the

furnace;

d) This furnace is designed for use with #1 or #2 heating

oil only. The use of gasoline, motor oil or any other oil

containing gasoline is prohibited;

e) Never block or otherwise obstruct the filter and/or

return air openings;

f) Ask the technician installing your furnace to show and

explain to you the following items:

i) The main disconnect switch;

ii) The shut-off valve on the oil tank;

iii) The oil filter and how to change it (once a year);

iv) The air filter and how to change it (check monthly

and clean or replace if necessary.)

g) Before calling for service, be sure to have the

information page in section 5 of your manual close

by in order to be able to provide the contractor

with the required information, such as the model

and serial numbers of the furnace.

WARNING

Installations and repairs performed by unqualified

persons can result in hazards to them and to others.

Installations must conform to local codes or, in the

absence of same, to codes of the country having

jurisdiction.

The information contained in this manual is intended

for use by a qualified technician, familiar with safety

procedures and who is equipped with the proper tools

and test instruments.

Failure to carefully read and follow all instructions in

this manual can result in death, bodily injury and/or

property damage.

1.3 DETECTION SYSTEMS

It is recommended that carbon monoxide detectors be

installed wherever oil or gas fired heaters are used.

Carbon monoxide can cause bodily harm or death. For

this reason, agency approved carbon monoxide detectors

should be installed in your residence and properly

maintained to warn of dangerously high carbon monoxide

levels.

There are several sources of possible smoke and flames

in a residence. Smoke and flames can cause bodily harm

or death. For this reason, agency approved smoke

detectors should be installed in your residence and

properly maintained, to warn early on, of a potentially

dangerous fire. Also, the house should be equipped with

approved and properly maintained fire extinguishers.

Your unit is equipped with safety devices that can prevent

it from functioning when anomalies are detected such as a

blocked venting system.

1.4

DANGER

FREEZING

CAUTION

If your furnace is shut down during the cold weather

season, water pipes may freeze, burst and cause serious

water damage. Turn off the water supply and bleed the

pipes.

If the heater is left unattended during the cold weather

season, take the following precautions:

Close the main water valve in the house and purge the

pipes if possible. Open all the faucets in the house;

Ask someone to frequently check the house during the

cold weather season to make sure that there is

sufficient heat to prevent the pipes from freezing. Tell

this person to call an emergency number if required.

2. INSTALLATION

This furnace is a true multi-position unit, in that it will function

in an upflow, downflow or horizontal configuration to the left or

the right. Only a few modifications are required during

installation to change from one position to another. The unit is

shipped in the upflow configuration and instructions as to how

to change to the other positions are included in this manual.

It requires a 115VAC power supply to the control panel and

thermostat hook-up as shown on the wiring diagram, one or

more oil line connections, suitable ductwork and connection to

a properly sized vent.

All local and national code requirements governing the

installation of oil burning equipment, wiring and the flue

connection MUST be followed. Some of the codes that may

apply are:

CSA B139: Installation code for oil burning equipment.

ANSI/NFPA 31: Installation of oil burning equipment.

ANSI/NFPA 90B: Warm air heating and air conditioning

systems.

ANSI/NFPA 211: Chimneys, Fireplaces, Vents and solid fuel

burning appliances.

ANSI/NFPA 70: National Electrical Code.

CSA C22.1: Canadian Electrical Code.

or CSA C22.10:

Only the latest issues of these codes may be used.

2.1 POSITIONING

THE

FURNACE

WARNING

Fire and explosion hazard.

The furnace must be installed in a level position, never

where it will slope toward the front.

Do not store or use gasoline or any other flammable

substances near the furnace.

Non-observance of these instructions will potentially result

in death, bodily injury and/or property damage.

CAUTION

This furnace is not watertight and is not designed for outdoor

installation. It must be installed in such a manner as to protect

its electrical components from water. Outdoor installation will

lead to a hazardous electrical condition and to premature

failure of the equipment.

The minimum clearances from combustible material for

each of the positions are specified in Table 9.

If the furnace is installed in a basement or on a dirt floor, in a

crawl space for example, it is recommended to install the unit

on a cement base 2.5 cm to 5.0 cm (1" to 2") thick.

The unit must be installed in an area where the ambient

and return air temperatures are above 15°C (60°F). In

addition, the furnace should be installed as closely as

possible to the vent, so that the connections are direct

and kept to a minimum. The heater should also be

located close to the centre of the air distribution system.

2.1.1

Installation in an enclosure

The unit can be installed in an enclosure such as a closet.

However, 2 ventilation openings are required for

combustion air. The openings should be located in front

of the furnace approximately 15 cm (6") above the floor

and 15 cm (6") below the ceiling. Figure 1 indicates the

minimum dimensions required and the location of the

openings.

Figure 1: Location and dimensions of ventilation air

openings in a closet door

2.2 CONFIGURATIONS

2.2.1 Upflow Installation

The return air opening may be located on either side of

the furnace. Care should be taken not to damage the

wires inside, while cutting the opening. Install the filter

rack supplied with the unit according to the instructions

provided with it. It is also recommended to install the

blower door before handling or moving the unit. Refer to

figure 2 for additional details.

Figure 2: Upflow installation

Filter 20" x 20"

Burner position

Combustible or non-

combustible floor

2.2.2 Downflow Installation

When the furnace is installed in the downflow position on a

combustible floor, the clearances from combustibles must be

adhered to. The downflow base DFB-102 or KLASB0801DET

can be used to ensure these clearances. Refer to Figure 3

and the installation instructions provided with the base.

In cases where the return air enters through the floor, the floor

return base FRB-101 or KLARB0101DET must be used.

The burner must always be installed in the same manner,

regardless of the discharge position of the furnace. Refer to

Figure 3 for additional details.

The protection plate (B03789) must be installed on the plastic

cover of the Beckett NX burner to protect it from vent.

Figure 3: Downflow installation

2.2.3 Horizontal Installation

When the furnace is installed in the horizontal position, either

suspended or on a combustible floor with a choice of right or

left discharge, the clearances from combustible material must

be adhered to. If the unit is installed on a combustible floor,

the horizontal floor base HFB-101 or KLASB0701DET can be

used to ensure these clearances. Refer to the instructions

supplied with the base.

In cases where the return air enters through the floor, the floor

return base FRB-101 or KLARB0101DET can be installed as

per the supplied instructions.

The burner must always be installed in the same manner,

regardless of the discharge position of the furnace. Refer to

Figure 4 for additional details.

Figure 4: Horizontal installation

2.3 ELECTRICAL

SYSTEM

CAUTION

The exterior of the unit must have an uninterrupted

ground to minimize the risk of bodily harm, if ever an

electrical problem develops. A green ground screw is

supplied with the control box for that purpose.

The appliance must be installed in accordance with the

current ANSI/NFPA 70 National Electrical Code, CSA

C22.1 Canadian Electrical Code Part 1 and/or local

codes.

The control system depends on the correct polarity of the

power supply. Connect “HOT” wire (H) and “NEUTRAL”

wire (N) as shown in figures 10 and 11.

A separate line voltage supply should be used, with fused

disconnect switch or circuit breaker, between the main

power panel and the unit.

Only copper wire may be used for the 115V circuit on this

unit. If wires need to be changed, the replacements must

have the same temperature resistance as the originals.

2.4 INSTALLATION

THE

THERMOSTAT

A thermostat must be installed to control the temperature

of the area to be heated. Follow the instructions supplied

with the thermostat. Also refer to the wiring diagrams

provided with the heating/air conditioning unit. The

connections must be made as indicated on the following

diagrams and the wiring diagrams, figures 10 and 11.

Figure 5: Thermostat wiring, heating and air

conditioning with 4-speed motor

Filter rack 20" x 20"

Floor Return Base

Downflow base is

required for

combustible floor

Floor Return

Burner

Horizontal floor base

required for

combustible floor

Filter rack 20" x 20"

Burner position

Figure 6: Thermostat wiring heating and air conditioning

with ECM variable speed motor

Figure 7: Thermostat wiring, heating and air cond. heat

pump with ECM v. speed motor

Note: On units with 2 stage cooling or heat pump, terminal Y1

must be used. When Y1 on the electronic control receives a

24 VAC signal, the air flow is reduced by 20%. Do not use

terminal Y1 with a single stage cooling or heat pump.

2.5 INSTALLATION

THE

BURNER

Refer to the burner manufacturer’s instructions. Also, the

burner must be installed always in the same way

independently of the furnace orientation.

1. Position the mounting gasket between the mounting

flange and the burner mounting plate. Align the holes in

the burner mounting plate with the studs on the mounting

flange and bolt securely in place.

2. Remove the burner drawer assembly or the air tube

assembly;

3. Install the nozzle, refer to Technical Specifications Table

4. Check the electrode settings;

5. Make the electrical connections;

6. Complete oil line connections.

2.5.1 Nozzles

The burner comes equipped with an appropriate nozzle.

However, if another size or a replacement nozzle is

required, use the manufacturer’s recommended spray

angle and type a shown in Table 6 and based on a pump

pressure of 100 psi.

Always select nozzle sizes by working back from the

desired flow rate at operating pressure and not the nozzle

marking.

2.5.2 Air and Turbulator Settings

Before starting the burner for the first time, adjust the air

and turbulator settings to those listed in this manual,

Table 6. Once the burner becomes operational, final

adjustments will be required. Refer to section 3 of this

manual.

2.5.3 Post purge delay adjustment

The post purge delay on the oil-fired burners is factory set

to zero second. This delay is applicable for all

installations with chimney venting. For heating units

installed with side wall venting and a burner equipped

with this feature, the post purge delay must be set to 15

seconds. Refer to the burner control instruction manual

and markings for proper adjustment of the post purge

delay.

2.6 VENTING

WARNING

Poisonous carbon monoxide gas, fire and explosion

hazard.

Read and follow all instructions in this section.

Failure to properly vent this furnace can result in in

death, bodily injury and/or property damage.

To ensure the safe and proper functioning of an oil

furnace, it must always be connected to a flue with

sufficient draft or to an approved side-wall venting

system. In addition, it is strongly recommended to

perform a complete inspection of all the existing venting

systems.

WARNING

Poisonous carbon monoxide gas hazard.

Never install a hand operated damper in the vent pipe.

However, any Underwriters Laboratories listed,

electrically operated automatic type vent damper may

be installed if desired. Be sure to follow the

instructions provided with vent damper. Also, read

and follow all instructions in this section of the

manual.

Failure to properly vent this furnace or other

appliances can result in death, bodily injury and/or

property damage.

2.6.1 Masonry chimney

This furnace can be vented into an existing masonry chimney.

However, the unit must not be vented into a chimney into

which a solid fuel burning furnace is already being vented.

Before venting this furnace into a chimney, its condition must

be checked and repairs made, if necessary. Also, the chimney

lining and dimensions must conform to local and national

codes.

2.6.2 Factory Built Chimneys

Oil fired furnaces are approved for use with “L” type vents.

The unit may also be used with an approved chimney of

proper dimensions and temperature ratings as specified in the

installation code. Refer to chimney manufacturer’s instructions

for proper installation.

2.6.3 Draft Regulator

It is recommended that a draft regulator be installed in cases

where the draft is either high or variable due to external

conditions. Follow the instructions provided with the regulator.

2.6.4 Side-wall Venting

The heating unit is approved for side-wall venting. This system

is comprised of a model VTK-098/KLAVT0101DET side-wall

venter and a 4” insulated vent pipe, model IFV098-

10/KLAFV0101DET, IFV098-20/KLAFV0201DET. Refer to the

installation instructions provided with the venting system.

2.7 BLOCKED

VENT

SHUT-OFF

DEVICE

(BVSO)

FOR

CHIMNEY

VENTING

CAUTION

It is imperative that this device be installed by a qualified

service technician.

A positive pressure venting system (Sealed Combustion

System or Direct Vent) MUST NOT use the BVSO. Follow the

instructions supplied with the venting system.

This device is designed to detect the insufficient evacuation of

combustion gases in the event of a vent blockage. In such a

case the thermal switch will shut down the oil burner. The

device will then need to be re-armed MANUALLY.

Refer to the detailed instructions and wiring diagrams supplied

with the BVSO for the installation and wiring procedures. The

length of wires supplied with the unit is such that the safety

device must be installed between the flue outlet of the

appliance and the draft regulator, as indicated in the

instructions.

It is also essential that the BVSO be maintained annually. For

more details refer to the instructions supplied with the device

itself, as well as Section 3. of this Manual.

2.7.1 BVSO Performance Test

The purpose of the following test is to check that the electrical

outlet on the furnace, designated to the BVSO, is functional.

1. Start up the burner;

2. Remove the three-pole plug from the BVSO outlet on

the furnace;

3. The burner must shut-off immediately, while the

blower continues to run to the end of the cool-down

cycle.

If the test is not in line with the above, call a QUALIFIED

SERVICE TECHNICIAN.

2.8 COMBUSTION

AIR

SUPPLY

AND

VENTILATION

WARNING

Poisonous carbon monoxide gas hazard.

Comply with NFPA 31 (U.S.) and CSA B139 (Canada)

standards for the installation of Oil Burning

Equipment and applicable provisions of local building

codes to provide combustion and ventilation air.

Failure to provide adequate combustion and

ventilation air can result in death, bodily injury and/or

property damage.

Oil furnaces must have an adequate supply of

combustion air. It is common practice to assume that

older homes have sufficient infiltration to accommodate

the combustion air requirement for the furnace. However,

home improvements such as new windows, doors, and

weather stripping have drastically reduced the volume of

air infiltration into the home.

Refer to oil furnace installation codes relative to

combustion and ventilation air requirements. Consult

Section 2.2 in this manual, specifically for units installed

in an enclosed space.

Home air exhausters are common. Bathroom and kitchen

fans, power vented clothes dryers and water heaters all

tend to create a negative pressure condition in the home.

Should this occur the chimney becomes less and less

effective and can easily downdraft. In certain cases,

mechanically supplied air, by way of a blower, interlocked

with the unit, is necessary. It is the installer’s

responsibility to check that.

2.8.1 Contaminated Combustion Air

Installations in certain areas or types of structures will

increase the exposure to chemicals or halogens that may

harm the furnace. These conditions will require that only

outside air be used for combustion.

The following areas or types of structures may contain or

be exposed to certain substances, potentially requiring

outside air for combustion:

a. Commercial buildings;

b. Buildings with indoor pools;

c. Furnaces installed near chemical storage areas.

Exposure to the following substances:

a. Permanent wave chemicals for hair;

b. Chlorinated waxes and cleaners;

c. Chlorine based swimming pool chemicals;

d. Water softening chemicals;

e. De-icing salts or chemicals;

f. Carbon tetrachloride;

g. Halogen type refrigerants;

h. Cleaning solvents (such as perchloroethylene);

i. Printing inks, paint removers, varnishes, etc. ;

j. Hydrochloric acid;

k. Solvent based glue;

l. Antistatic fabric softeners for clothes dryers;

m. Acid based masonry cleaning materials.

2.8.2 Burner with Outdoor Combustion Air Kit

Certain burners are designed to function with combustion air

taken directly from the outside. Follow the instructions

provided with the burner, the fresh-air supply kit or the side-

wall venting kit.

2.9 OIL

TANK

WARNING

Fire and explosion hazard.

Use only approved heating type oil in this furnace.

DO NOT USE waste oil, used motor oil, gasoline or

kerosene.

Use of these will result in death, bodily injury and/or

property damage.

CAUTION

When a 0.75 USGPH or smaller nozzle is used, a 10 micron

or finer filter, must be installed on the oil supply line to the

furnace inside the building where the unit is located.

This is a requirement in order for the heat exchanger warranty

to remain in force.

Check your local codes for the installation of the oil tank and

accessories.

At the beginning of each heating season or once a year,

check the complete oil distribution system for leaks.

Ensure that the tank is full of clean oil. Use No.1 or No.2

Heating Oil (ASTM D396 U.S.) or in Canada, use No.1 or No.2

Furnace Oil.

A manual shut-off valve and an oil filter shall be installed in

sequence from tank to burner. Be sure that the oil line is clean

before connecting to the burner. The oil line should be

protected to eliminate any possible damage. Installations

where the oil tank is below the burner level must employ a

two-pipe fuel supply system with an appropriate fuel pump. A

rise of 2.4 m (8') and more requires a two stage pump and a

rise greater than 4.9 m (16') an auxiliary pump. Follow the

pump instructions to determine the size of pipe needed in

relation to the rise or to the horizontal distance.

2.10 DUCTING

WARNING

Poisonous carbon monoxide gas hazard.

DO NOT draw return air from inside a closet or utility

room. Return air MUST be sealed to the furnace

casing.

Failure to properly seal ducts can result in death,

bodily injury and/or property damage.

The ducting must be designed and installed according to

approved methods, local and national codes as well as

good trade practices.

When ducting supplies air to a space other than where

the furnace is located, the return air must be sealed and

also be directed to the space other than where the

furnace is located.

2.10.1 Air filter

A properly sized air filter must be installed on the return

air side of the unit. Refer to the Technical Specifications,

table 6, for the correct dimensions. Also refer to Section

2.2 and the instructions supplied with the filter.

2.11 SUPPLY

AIR

ADJUSTMENTS

SPEED

MOTORS)

On units equipped with 4-speed blower motors, the

supply air must be adjusted based on heating/air

conditioning output and the static pressure of the duct

system. For the desired air flow refer to the following table

as well as the air flow tables based on static pressure in

the Technical Specifications, table 6, of this manual.

Table 1: Blower speed adjustments (4-speed motors)

FURNACE

APPLICATION HEATING OR A/C

OUTPUT RECOMMENDED

BLOWER SPEED

0.50 USGPH MED-LOW

0.60 USGPH MED-HIGH

HEATING 0.70 USGPH HIGH

2.0 TONS MED-LOW

2.5 TONS MED-HIGH

A/C 3.0 TONS HIGH

To effect the adjustment, the RED (for heating) and BLUE

(for cooling and heat pump) wires can be changed on the

motor. Also, refer to the position of the wires on the

electronic board of the unit and consult the wiring

diagrams. If the heating and air conditioning speeds are

the same, the RED wire must be moved to “UNUSED

LEADS” on the electronic board and the jumper provided

with the BLUE wire must be used between the “HEAT”

and “COOL” terminals.

The blower start/stop delays can be adjusted by

positioning the DIP switches on the electronic board as

shown in the following figures. The recommended blower

ON delay is 60 seconds and the blower OFF delay is 2

minutes.

Figure 8: Blower start/stop delays

Board # 1158

2.12 SUPPLY

AIR

ADJUSTMENTS

(ECM

VARIABLE

SPEED

MOTORS)

On units equipped with ECM variable speed blower motors,

the air supply must be adjusted based on heating/air

conditioning output. The start/stop delays of the blower must

also be adjusted by positioning the DIP switches on the

electronic board. Refer to the following tables, air flow table 2

and the wiring diagram, figures 10 and 11 in this manual for

the proper settings:

Table 2: Supply air adjustments, ECM variable speed

motors, heating mode

SW1 – HEAT

DIP Switch Positions

1 2 POSITION

Input

USGPH

OFF OFF A 0.70

ON OFF B 0.60

OFF ON C 0.50

ON ON D ALL

Table 3: Supply air adjustments, ECM variable speed

motors, air conditioning mode

SW2 – COOL

DIP Switch Positions

1 2 POSITION

Output

Tons

OFF OFF A 3.0

ON OFF B 2.5

OFF ON C 2.0

ON ON D 1.5

Table 4: CFM adjustments, all modes

SW3 – ADJ (Adjustment)

DIP Switch Positions

1 2 POSITION

CFM HTG.

% increase

or decrease

CFM A/C

% increase

or decrease

OFF OFF A 0% 0%

ON OFF B +10% +10%

OFF ON C -10% -10%

ON ON D N/A 0%

Table 5: Delay adjustments - heating mode

SW4 – Delay

DIP Switch Positions

1 2 POSITION

Input

USGPH

OFF OFF A 0.70

ON OFF B 0.60

OFF ON C 0.50

ON ON D ALL

2.13 INSTALLATION

ACCESSORIES

WARNING

Electrical shock hazard.

Turn OFF electrical power at the fuse box or service

panel before making any electrical connections and

ensure a proper ground connection is made before

connecting line voltage.

Failure to do so can result in death or bodily injury.

2.13.1 Humidifier (HUM)

The 120 VAC HUM terminal on the electronic board of the

blower is tied directly to terminal 8 of the 9-terminal

connector of the electronic board. It supplies 120 VAC

electric power when the burner is in operation.

A 24 VAC signal can also be supplied from the W and C

terminals on the blower electronic board to activate a

switching relay.

Also refer to the instructions supplied with the accessory.

2.13.2 Electronic Air Cleaner (EAC)

The EAC terminal on the electronic board supplies 120

VAC when the blower is operating in the heating or air

conditioning mode. This signal can be used to activate an

electronic air cleaner that is not equipped with an air flow

switch. If the cleaner is equipped with an air flow switch,

the S terminal on the electronic board or one of the 120

VAC terminal on the ECM electronic card can be used to

provide a constant supply of 120 VAC.

Also refer to the instructions supplied with the accessory.

2.13.3 Air Conditioner (or Heat Pump)

An air conditioning coil may be installed on the supply air side

ONLY.

WARNING

Poisonous carbon monoxide gas hazard.

Install the evaporator coil on the supply side of the

furnace ducting ONLY.

An evaporator coil installed on the return air side of the

ducting can cause condensation to form inside the heat

exchanger, resulting in heat exchanger failure. This in

turn, can result in death, bodily injury and/or property

damage.

A clearance of 15 cm (6") is required between the bottom of

the coil drain pan and the top of the heat exchanger. If a heat

pump is installed, a “dual-energy” thermostat, or other control

is recommended, in order to prevent the simultaneous

operation of the furnace and the heat pump. It also prevents a

direct transition from heating by way of the heat pump to

heating with oil. Refer to the thermostat instructions or those

of another control used for the proper wiring.

3 OPERATION

3.1 START-UP

Before starting up the unit, be sure to check that the following

items are in compliance:

The electrical installation, the oil supply system, the

venting system, combustion air supply and ventilation;

The blower access door is in place and the blower rail

locking screws are well tightened;

The Blocked Vent Shut-Off (BVSO) is installed according

to instructions (for chimney venting);

The oil supply valve is open;

The burner ‘’Reset’’ button is well pushed in or re-armed;

The preliminary air adjustments on the burner comply

with the technical specifications in this manual;

The blower speed adjustments for heating and air

conditioning are appropriate and according to the

specifications in this manual;

The blower start/stop delays are satisfactory;

The thermostat of the room is in the heating mode and is

set higher than the ambient temperature.

To start the unit, turn the main electrical switch on.

3.2 OPERATING

SEQUENCE

OIL

HEATING

MODE

The W-R contact closes;

The burner motor starts up to pre-purge the

combustion chamber for a period of 10 to 15

seconds. During that time a spark is established on

the electrodes;

The solenoid valve opens and a flame is established.

Shortly after, the electrodes cease to spark;

Then the blower runs up to full speed. The delay

depends on the adjustments that were made on the

electronic board, which controls the blower motor.

Refer to Sections 2.11 and 2.12, as well as the CFM

table 7 for more details.

When the call for heat is satisfied, the solenoid valve

closes, the flame goes out and the burner motor

stops (after post purge delay, if applicable).

The blower stops shortly after the burner. The delay

depends on the adjustments that were made on the

electronic board that controls the blower. Refer to

Sections 2.11 and 2.12, as well as the CFM table 7

for more details.

Note: A detailed operating sequence of the oil burner is

outlined in the instructions provided with the burner.

3.3 CHECKS

AND

ADJUSTMENTS

3.3.1 Purging the oil line

Open the bleed port screw and start the burner. Allow the

oil to drain into a container for at least 10 seconds. The oil

should flow absolutely free of white streaks or air bubbles

to indicate that no air is being drawn into the suction side

of the oil piping and pump. Slowly close and tighten the

bleed screw. Once closed, the flame will light up.

3.3.2 Pressure adjustment

The oil pressure must be adjusted according to the

Technical Specifications of this manual. An adjustment

screw and a connection for a pressure gauge are located

on the oil pump for that purpose. Also refer to the burner

instruction manual.

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