Dettson AMT300B34-SM1PMB OLR210F19C User manual

WARM AIR FURNACE OIL
FIRED - UPFLOW
Printed in Canada on 100% recycled paper
AMT300B34-SM1PMB
Models:
OLR210F19C
2013-06-05 X40090 Rev. M
Installation Instructions
and Homeowner’s Manual
Manufactured by:
Dettson Industries Inc
Attention
Do not tamper with the unit
or its controls. Call a
qualified service technician.
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.
www.dettson.ca
3400, Industrial Boulevard
Sherbrooke, Qc, Canada, J1L
1V8

PART 1
INSTALLATION
3
SAFETY CONSIDERATIONS
INSTALLATION OF OIL FIRED HEATING UNITS
SHALL BE IN STRICT ACCORDANCE WITH THE
REGULATIONS OF THE AUTHORITIES HAVING
JURISDICTION. IN CANADA THE CSA B139 AND IN
THE UNITED STATES THE NFPA NO.31-1992
INSTALLATION CODES FOR OIL BURNING
EQUIPMENT APPLY.
DO NOT OPERATE FURNACE IN A CORROSIVE
ATMOSPHERE CONTAINING CHLORINE, FLUORINE
OR ANY OTHER DAMAGING CHEMICALS.
DO NOT STORE OR USE GASOLINE, OR OTHER
FLAMMABLE VAPOURS AND LIQUIDS IN THE
VICINITY OF THIS OR ANY OTHER APPLIANCE.
1.1) SAFETY LABELING AND WARNING SIGNS
DANGER, WARNING AND CAUTION
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 which WILL result in death or
serious injury.
WARNING
Hazards or unsafe practices which CAN result
in death or injury.
CAUTION
Hazards or unsafe practices which CAN result in
personal injury, product or property damage.
1.2) SAFE INSTALLATION REQUIREMENTS
WARNING
Installation or repairs performed by unqualified
persons can result in hazards to them and others.
The installation MUST conform to local codes or, in
the absence same, to codes of the country having
jurisdiction.
The information contained in this manual is
intended for use by a qualified service technician,
familiar with safety procedures and equipped with
the proper tools and test instruments.
Failure to carefully read and follow all instructions
in this manual can result in personal injury and/or
death, property damage, furnace malfunction.
WARNING
Fire hazard
The furnace must be installed in a level position,
never where it will slope toward the front.
If the furnace is not installed level, oil will drain into
the furnace vestibule and create a fire hazard,
instead of being directed into the combustion
chamber.
NOTE: It is the personal responsibility and obligation of the customer
to contact a qualified installer to ensure that the installation conforms
to governing local and/or national codes and ordinances.
a. This furnace is NOT approved for installation in mobile homes,
trailers or recreational vehicles;
b. Do NOT use this furnace as a construction heater or to heat a
building under construction;
c. There must be a sufficient supply of fresh air for combustion as
well as ventilation in the area where the furnace is located;
d. Use only the type of fuel oil approved for this furnace (see Rating
Plate on unit). Overfiring will result in failure of heat exchanger
and cause dangerous operating conditions;
e. Visually check all oil line joints for signs of leakage;
f. Connect furnace to the chimney;
g. The points in Part 2 “Operation” are vital to the proper and safe
operation of the heating system. Take the time to ensure that all
steps were followed;
h. Follow the rules of the NFPA Pamphlet No.31 (in the USA) and
CSA B-139 (in Canada) or local codes for placing and installing
the oil storage tank;
i. Follow a regular service and maintenance schedule for efficient
and safe operation;
j. Before servicing, allow furnace to cool. Always shut off electricity
and fuel to furnace when servicing. This will prevent electrical
shock or burns;

k. Seal supply and return air ducts;
l. The vent system MUST be checked to determine that it is the
correct type and size;
m. Install correct filter type and size;
n. Unit MUST be installed so electrical components are protected
from direct contact with water.
1.2.1) Safety Rules
Your unit is built to provide many years of safe and dependable
service providing it is properly installed and maintained. However,
abuse and/or improper use can shorten the life of the unit and create
hazards for you, the owner.
a. The U.S. Consumer Product Safety Commission recommends
that users of oil-burning appliances install carbon monoxide
detectors. There can be various sources of carbon monoxide in a
building or dwelling. The sources could be gas-fired clothes
dryers, gas cooking stoves, water heaters, furnaces, gas-fired
fireplaces, wood fireplaces, and several other items. Carbon
monoxide can cause serious bodily injury and/or death.
Therefore, to help alert people to potentially dangerous carbon
monoxide levels, you should have carbon monoxide detectors
listed by a nationally recognized agency (e.g. Underwriters
Laboratories or International Approval Services) installed and
maintained in the building or dwelling (see Note below).
b. There can be numerous sources of fire or smoke in a building or
dwelling. Fire or smoke can cause serious bodily injury, death,
and/or property damage. Therefore, in order to alert people to
potentially dangerous fire or smoke, you should have fire and
smoke detectors listed by Underwriters Laboratories installed
and maintained in the building or dwelling (see Note below).
NOTE: The manufacturer of your furnace does not test any detectors
and makes no representations regarding any brand or type of
detector.
4
CAUTION
Ensure that the area around the combustion air intake
terminal is free of snow, ice and debris.
1.2.2) Freezing temperatures and your building
WARNING
Freezing temperature warning.
Turn off water supply.
If your heater remains shut off during cold weather
the water pipes could freeze and burst, resulting in
serious water damage.
Your unit is equipped with safety devices that may keep it from
operating if sensors detect abnormal conditions such as clogged
exhaust flues.
If the structure is unattended during cold weather you should take
these precautions :
a. Turn off main water supply into the structure and drain the water
lines if possible. Open faucets in appropriate areas;
b. Have someone check the structure frequently during cold
weather to make sure it is warm enough to prevent pipes from
freezing. Contact a qualified service agency, if required.
1.2.3) Installation regulations
All local and national code requirements governing the installation of
oil burning equipment, wiring and flue connections MUST be followed.
Some of the codes that may be applicable are :
CSA B139 INSTALLATION CODE FOR OIL
BURNING EQUIPMENT
NFPA 31 INSTALLATION OF OIL BURNING
EQUIPMENT
ANSI/NFPA 90B WARM AIR HEATING AND AIR
CONDITIONING SYSTEMS
ANSI/NFPA 70 NATIONAL ELECTRICAL CODE
CSA C22.1 CANADIAN ELECTRICAL CODE
Only the latest issues of the above codes should be used.
1.3) POSITIONING THE FURNACE
The unit must be installed in a location where the ambient and return
air temperatures are over 15°C (60°F).
CAUTION
Carefully check your furnace upon delivery for any
evidence of damage that may have occurred during
shipping and handling. Any claims for damages or lost
parts must be made with the Transport Company.
This furnace is approved for reduced clearances to combustible
construction. Therefore, it may be installed in a closet or similar
enclosure. In any case, the unit must always be installed level.
In a basement, or when installed on the floor, as in a crawlspace, it is
recommended that the unit be installed on a concrete pad that is 25.4
to 50.8 mm (1" to 2") thick.
The required minimum clearances for this furnace are specified
in Table 1.

TABLE 1
Minimum clearances – combustion materials
LOCATION APPLICATION CLEARANCE
(combustible materials)
Left or right 0.15 m (6") *
Sides Other side left or right 25.4 mm (1")
Back Furnace 0.15 m (6") *
Furnace or plenum 25.4 mm (1")
Top Horizontal warm air duct within 6 feet of furnace 25.4 mm (1")
Bottom Furnace (combustible floor) ø
Horizontally or below flue pipe 0.23 m (9")
Flue pipe Vertically above flue pipe 0.23 m (9")
Front From burner 0.61 m (24")
* In these cases, 0.61 m (24") of access space is recommended for maintenance.
The furnace should be positioned as closely as possible to the
chimney to keep vent connections short and direct. It should also be
as close as possible to the centre of the air distribution system.
5
CAUTION
Do NOT operate furnace in a corrosive atmosphere
containing chlorine, fluorine or any other damaging
chemicals. Refer to Part 1, Section 5.2.
WARNING
Electrical shock hazard.
This furnace is not watertight and is not designed
for outdoor installation. This furnace shall be
installed in such a manner as to protect the
electrical components from water.
Outdoor installation would lead to a hazardous
electrical condition and potentially cause bodily
injury and/or death, property damage, premature
furnace failure.
1.4) 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 cause
bodily injury and/or death, property damage.
CAUTION
When the furnace (chimney installation) is vented
together with other combustion appliances such as a
water heater, the allowable venting materials (L-Vent
etc.) for use with those appliances must be investigated.
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 the vent damper. Read
and follow all instructions in this section.
Failure to properly vent this furnace or other
appliances can result in personal injury and/or
death, property damage.
The furnace must be vented to the outside, in accordance with local
codes and other authorities having jurisdiction.
OIL FIRED APPLIANCES SHALL BE CONNECTED TO FLUES
HAVING SUFFICIENT DRAFT AT ALL TIMES TO ENSURE SAFE
AND PROPER OPERATION OF THE APPLIANCE.
For additional venting information refer to ANSI/NFPA 211
Chimneys, Fireplaces, Vents and Solid Fuel Burning Appliances
and/or CSA B139 Installation Code.
This furnace is certified for use with a Type “L” vent (maximum flue
gas temperature 302°C (575°F)). The flue pipe clearance knockout
at the front top or side panel should be removed. Install the flue
elbow so that it exits the furnace cabinet through that opening.
Pre-installation vent system inspection
Before installing this furnace, it is highly recommended that any
existing vent system be completely inspected.
This inspection should include the following:
a. Inspection for any deterioration in the chimney or vent. If
deterioration is discovered, the chimney must be repaired or
the vent must be replaced;
b. Inspection to ascertain that the vent system is clear and free of
obstructions. Any blockages must be removed before installing
this furnace;
c. Cleaning the chimney or vent if previously used for venting a
solid fuel burning appliance or fireplace;
d. Confirming that all unused chimney or vent connections are
properly sealed;
e. Verification that the chimney is properly lined and sized per the
applicable codes (refer to list of codes on page 4).

Masonry Chimney
This furnace can be vented into an existing masonry chimney.
However, it must not be vented into a chimney servicing a solid fuel-
burning appliance. Before venting this furnace into a chimney, the
chimney must be checked for deterioration and repaired if
necessary. The chimney must be properly lined and sized per local
or national codes.
If the furnace is vented into a common chimney, the chimney must
be of sufficient area to accommodate the total flue products of all
appliances vented into the chimney.
The following requirements are provided for a safe venting system :
a. Ensure that the chimney flue is clear of any dirt or debris;
b. Ensure that the chimney is not servicing an open fireplace;
c. Never reduce the pipe size below the outlet size of the furnace;
d. All pipes should be supported using the proper clamps and/or
straps. These supports should be at least every 1.2 m (4');
e. All horizontal runs of pipe should have at least a 20 mm per
1 m (1/4"per foot)upward slope;
f. All runs of pipe should be as short as possible with as few turns
as possible;
g. Seams should be tightly joined and checked for leaks;
h. The flue pipe must not extend into the chimney but be flush
with the inside wall;
i. The chimney must extend 0.9 m (3') above the highest point
where it passes through a roof of a building and at least 0.6 m
(2') higher than any portion of a building within a horizontal
distance of 3.0 m (10'). It shall also be extended at lest 1.5 m
(5') above the highest connected equipment flue collar;
j. Check local codes for any variances.
Factory Built Chimneys
This furnace may be used with an approved, factory built chimney.
Refer to chimney manufacturer’s instructions for proper installation.
1.5) COMBUSTION AIR
6
WARNING
Poisonous carbon monoxide gas hazard.
Comply with ANSI/NFPA (in U.S.) or CSA (in
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 personal injury and/or
death.
1.5.1) General
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.
Home air exhausters are common. Bathroom and kitchen fans, power
vented clothes dryers, and water heaters all tend to create negative
pressure in the home. Should this occur, the chimney becomes less
and less effective and can easily downdraft.
Heat recovery ventilation (HRV) systems are gaining in popularity.
HRVs are not designed to supply combustion air. If not properly
balanced, a serious negative pressure condition could develop in the
dwelling.
1.5.2) Contaminated Combustion Air
Installations in certain areas or types of structures will increase the
exposure to chemicals or Halogens, which may harm the furnace.
These instances will require that only outside air be used for
combustion.
The following areas or types of structures may contain or be exposed
to the substances listed below. The installation must be carefully
evaluated as it may be necessary to provide outside air for
combustion.
a. Commercial buildings;
b. Buildings with indoor pools;
c. Furnaces installed near chemical storage areas.
Exposure to these 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 glues;
l. Antistatic fabric softeners for clothes dryers;
m. Acid based masonry cleaning materials.
1.6) OIL TANKS AND LINES
Check your local codes for the installation of the tank and accessories.
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 fuel oil tank is below the
burner level must employ a two pipe fuel supply system with an
appropriate fuel pump. For more than an 2.4 m (8') rise use a 2 stage
pump and for more than a 4.9 m (16') rise use an auxiliary pump.
Follow the pump instructions to determine the size of tubing you need
in relation to the rise, or the horizontal distance.
Inspect the entire oil distribution system for leaks at the beginning of
each heating season.
1.7) BURNER INSTALLATION
Mounting the burner
1. The warm air furnace burner mounting plate has a 4-bolt
configuration;
2. Position the mounting gasket between the mounting flange and
the appliance burner mounting plate. Line up the holes in the
mounting flange with the studs on the appliance mounting plate
and securely bolt in place.

After the burner is mounted
1. Remove drawer assembly;
2. Install nozzle (see specifications);
3. Confirm electrode settings;
4. Make the electrical connections;
5. Complete oil line connections.
CAUTION
7
NEVER use the “interrupted ignition” function if a
Honeywell R7184 series combustion relay is installed
on the burner.
CAUTION
Do not fire the burner until you have checked the
following:
Checking the polarity
Oil burners used on furnaces have solid state control systems which
make them sensitive to the proper connection of the hot and neutral
power lines. The controls will be damaged if the 2 wires are reversed.
1. Set your voltmeter to line voltage;
2. Place one prong on your grounded electric entry box and one
prong on the black wire;
3. Read the voltage;
4. If the voltage is zero, check the white wire. If line voltage shows,
reverse the 115-volt leads entering the furnace junction box (see
Figure 1);
5. If you do not have a voltmeter, use a pilot light.
FIGURE 1
Checking the nozzle
The burner is equipped with the appropriate nozzle. However, If
another size nozzle is required, use the manufacturer’s nozzle data
concerning spray angle, as shown in Table 2. Note that all nozzle
sizes are based on a pump pressure of 100 psi.
Always select nozzle sizes by working back from the actual desired
flow rate at operating pressure, and not by the nozzle marking.
Checking air and turbulator settings
Before starting the burner for the first time, adjust the air and turbulator
settings to those listed in Table 2. Once the burner becomes
operational, final adjustments will be necessary.
Checking the fuel supply system
Fuel Specifications:
NOTE: Use No.1 or No.2 Heating Oil (ASTM D396) or in Canada, use
No.1 or No.2 Furnace Oil.
Before starting the burner be sure the fuel tank is filled with clean oil.
IMPORTANT
When using nozzle sizes of less than 0.75 USGPH, the
Installation Code for oil burning equipment requires the
installation of a 10 micron (or less) filter in the fuel oil
line. These instructions must be followed in order for the
lifetime heat exchanger warranty to remain intact.
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, personal injury
and/or property damage.
NOTE: You may notice a slight odour the first time your furnace is
operated. This will soon disappear. It is only the oil used on certain
parts during manufacturing.
1.8) BLOCKED VENT SHUT-OFF (BVSO)
For chimney venting
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 wiring diagrams and the detailed instructions 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.
DNS-0864 Rev. A
It is further imperative that the BVSO be maintained annually. Refer to
the instructions supplied with the device for more details.
CAUTION
A positive pressure venting system (Sealed Combustion
System or Direct Vent) MUST NOT use the BVSO. Follow
the instructions supplied with the venting system.

1.9) INSTALLING ACCESSORIES
Install air conditioning cooling coil (evaporator) downstream from the
supply air plenum of the furnace. If a separate evaporator and blower
unit is used, install appropriate sealing dampers for air flow control.
Cold air from the evaporator coil going through the furnace could
cause condensation and shorten furnace life.
WARNING
Electrical shock hazard. CAUTION
Turn OFF electric 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.
Dampers (purchased locally) MUST be automatic.
WARNING
Failure to do so could result in bodily injury and/or
death, property damage.
Poisonous carbon monoxide gas hazard.
Do NOT draw return air from inside a closet or
utility room. Return air duct MUST be sealed to
furnace casing.
1.9.1) Air conditioning
An air conditioning coil may be installed on the supply air side only.
Notwithstanding the evaporator coil manufacturer’s instructions, a
minimum clearance of 0.13 m (5") must be allowed between the
bottom of the coil drain pan, and the top of the heat exchanger.
Failure to properly seal ducts can result in death,
personal injury and/or property damage.
The wiring shown in Figure 4.1 is an example of a furnace where the
output is the same for heating and cooling. In a case where the blower
speed must be different, use the blue wire. WARNING
Poisonous carbon monoxide gas hazard.
1.9.2) Ductwork and Filter
Install evaporator coil on the supply side of the
furnace ducting.
Installation
Evaporator coil installed in return side ducting can
cause condensation to form inside heat exchanger,
resulting in heat exchanger failure. This could result
in death, personal injury and/or property damage.
Design and install the air distribution system to comply with Air
Conditioning Contractors of America manuals or other approved
methods that conform to local codes and good trade practices.
CAUTION
When ducting supplies air to a space other than where
the furnace is located, the return-air ducts must be
sealed and also be directed to the space other than
where the furnace is located. Incorrect ductwork
termination and lack of sealing will create a hazardous
condition which can lead to bodily harm.
8

PART 2
OPERATION
2.1) SEQUENCE OF OPERATION
2.1.1) Sequence of operation - Beckett AFG,
Riello 40-F
1. Normally open contact (T-T) on primary relay closed when
thermostat calls for heat;
2. AFG burner: The motor starts and spark is established. The
pump pressure builds and the oil supply mechanism opens,
admitting fuel to the nozzle;
R40-F burner: Burner motor starts. The burner motor fan pre-
purges the combustion chamber and vent for 10 seconds,
establishing the combustion air pattern. During this time the
solenoid valve holding coil pressure is approximately 100 psig.
The solenoid valve opens, allowing oil to flow through the nozzle.
At the same time, the burner motor ignition coil produces a spark;
9
3. Spark ignites oil droplets;
4. Cad cell senses flame and burner continues to fire. Ignition
transformer ceases sparking (R40-F);
5. After Fan-Limit control heats up to the factory set point, the
circulating air blower and electronic air cleaner starts;
6. The circulating air blower and burner motor remain on until the
thermostat is satisfied (AFG). The ignition transformer continues
to spark (AFG). The solenoid valve remains open (R40-F);
Thermostat is satisfied;
7. Primary relay contacts open, solenoid valve closes (R40-F),
burner motor shuts down. The ignition transformer ceases
sparking (AFG);
8. The Fan-Limit control bi-metal cools down to the factory set point
of 32°C (90°F). At that point the circulating air blower stops.
2.2) CHECKS AND ADJUSTMENTS
2.2.1) General
During initial start-up and subsequent yearly maintenance calls, the
furnace must be thoroughly tested.
IMPORTANT
The burner must be put into operation for 5 to 10
minutes before any test readings are taken. For new
installations, set up the burner to the settings (see Table
2), before firing. These are rough adjustments but they
will ensure that the burner will start and run smoke-free
in advance of fine tuning.
Open the oil bleed port screw and start the burner. Allow the oil to
drain into a container for at least 10 seconds. Slowly close and tighten
the bleed screw. 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. Fire the burner. Adjust the oil pressure as
indicated in Table 2.
2.2.2) Restart after burner failure
1. Set thermostat lower than the room temperature;
2. Press the reset button on the burner primary control (relay);
3. Set thermostat higher than the room temperature;
4. If the burner motor does not start or ignition fails, turn off the
disconnect switch and CALL A QUALIFIED SERVICE
TECHNICIAN.
CAUTION
Do not attempt to start the burner when excess oil has
accumulated, when the furnace is full of vapour, or
when the combustion chamber is very hot.
2.2.3) Smoke / CO2test
1. Pierce a test hole in the smoke pipe near the furnace breech.
Insert the smoke test instrument probe into the hole;
2. Starting with a zero smoke reading, gradually reduce the burner
air setting until just a trace of smoke results (#1 on Bacharach
scale);
3. Take a CO2sample at the same test location where the smoke
sample was taken. Note the CO2reading associated with the #1
smoke condition;
4. Adjust the burner air setting to obtain a CO2reading 1% lower
than the reading associated with the #1 smoke;
5. This method of adjusting the CO2will allow adequate excess air
to ensure that the burner will burn clean for the entire heating
season.
2.2.4) Supply air temperature rise test
1. Operate the burner for at least 10 minutes;
2. Measure the temperature of the air in the return air plenum;
3. Measure the temperature of the air in the largest trunk coming off
the supply air plenum, just outside the range of radiant heat
coming off the heat exchanger; 0.3 m (12") from the plenum on
the main take-off is usually sufficient;
4. The temperature rise is calculated by subtracting the return air
temperature from the supply air temperature;
5. If the temperature rise exceeds the temperature specified in
Table 2, change to the next higher blower speed tap until the
temperature rise falls to this temperature or below. If the
excessive temperature rise cannot be reduced by increasing fan
speed, investigate for ductwork restriction(s), dirty or improper air
filter, or overfiring caused by excessive pump pressure, or
improper nozzle sizing.
2.2.5) Vent temperature test
1. Place a thermometer in the test hole located in the breech pipe;
2. The vent temperature should be between 204 to 302°C (400
and 575°F). If not, check for improper air temperature rise,
pump pressure, nozzle size, or for a badly sooted heat
exchanger.

2.2.6 Fan-Limit adjustment
10
Modification of the «FAN ON» and «HI» limit settings on the Fan-Limit
can cause malfunctioning of the furnace and result in premature wear
of the heat exchanger.
CAUTION
Modification of the factory set limits will void the
warranty.
2.2.7 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.
FIGURE 2
DNS-0355 Rev.B
AMT3 , OLR210F19C
1 Limit “FAN OFF” 90°F
2 Limit “FAN ON” 110°F
3 Limit “HI” 240°F

PART 3
MAINTENANCE
3.1) GENERAL
Preventive Maintenance
Preventive maintenance is the best way to avoid unnecessary
expense and inconvenience. Have your heating system and
burner inspected at regular intervals by a qualified service
technician.
After each annual inspection a complete combustion test must be
performed, in order to maintain optimum performance and reliability.
11
WARNING
Electrical shock hazard.
Turn OFF power to furnace before any disassembly
or servicing.
Failure to do so can result in bodily injury and/or
death, property damage.
Do not tamper with the unit or its controls. Call a qualified service
technician.
Before calling for service, check the following:
a. Check the oil tank gauge and check if the valve is open;
b. Check the fuse or circuit breaker;
c. Check if the shut-off switch is “ON”;
d. Reset the thermostat above room temperature;
e. If ignition does not occur turn off the disconnect switch and call a
qualified service technician.
When ordering replacement parts, specify the complete furnace
model number and serial number.
3.1.1) Heat exchanger cleaning
Ordinarily, it is not necessary to clean the heat exchanger or flue pipe
every year, but it is advisable to have your oil burner serviceman
check the unit before each heating season to determine whether
cleaning or replacement of parts is necessary.
If cleaning is necessary, the following steps should be performed:
1. Turn “OFF” all utilities upstream of the furnace;
2. Disconnect the flue pipe;
3. Remove the flue collar panel located at the rear part of the warm
air furnace;
4. Remove the radiator baffles;
5. Disconnect the oil line and remove the oil burner from the
furnace;
6. Clean the secondary tubes, and the primary cylinder with a stiff
brush and vacuum cleaner;
7. The heat exchanger and combustion chamber should be
inspected to determine if replacement is required before re-
assembling the unit;
8. After cleaning, replace the radiator baffles, flue collar plate and
oil burner;
9. Readjust burner for proper operation.
Soot will have collected in the first sections of the heat exchanger, only
if the burner was started after the combustion chamber was flooded
with fuel oil, or if the burner has been operating in a severely
contaminated condition.
3.1.2) Burner drawer assembly
Remove the drawer assembly. Clean all foreign matter from the
retention head and electrodes. In the case of a Beckett AFG burner,
the burner will have to be removed to check the retention head.
3.1.3) Nozzle
Replace the nozzle with the one specified in Table 2.
3.1.4) Oil filters
Tank filter
The tank filter should be replaced as required.
Secondary filter
The 10 micron (or less) filter cartridges should be replaced annually.
3.1.5) Air filters
Air filters are the disposable type. Disposable filters should be
replaced at least once a year. Dusty conditions, presence of animal
hair etc. may require more frequent filter changes. Dirty filters will
impact on furnace efficiency and increase oil consumption.
3.1.6) Motor lubrication
Do NOT lubricate the oil burner motor or the direct drive blower motor
as they are permanently lubricated.
3.1.7) Blocked Vent Shut Off (BVSO) Cleaning
For continued safe operation, the Blocked Vent Shut-Off System
(BVSO) is required to be inspected and maintained annually by a
qualified agency.
1. Disconnect the power to the appliance.
2. Remove the two screws holding on the BVSO assembly cover.
3. Remove the cover.
4. Remove the two screws holding the thermal switch to the
assembly base.
5. Without removing the electrical wires, remove the thermal switch
and remove any build-up from the thermal switch surface.
CAUTION
Do not dent or scratch the surface of the thermal
switch. If the thermal switch is damaged,
replacement is required.
6. Clear and remove any build-up or obstruction inside the heat
transfer tube.
7. Re-mount the thermal switch to the assembly base.
8. Re-attach the assembly cover with the screws removed in step 2.
9. Re-establish power to the appliance.

PART 4
INFORMATION
Model: Serial number:
Furnace installation date:
Service telephone # - Day: Night:
Dealer name and address:
START-UP TEST RESULTS
Nozzle: Pressure: lb/psi
Burner adjustments: Primary air
Fine air
Drawer Assembly
CO2 : % Smoke scale: (Bacharach)
Gross stack temperature:
0F
Ambient temperature:
0F
Chimney draft: " W.C."
Overfire draft: " W.C."
Test performed by:
12

0.25" 0.5"
MED-HI 1950 N/A
HIGH 2050 1900
AMT300B34-SM1PMA / OLR210F19A
EXTERNAL STATIC PRESSURE WITH AIR FILTER
SPEED
13
TABLE 2
Technical specifications, AMT300B34-SM1PMB/ OLR210F19C
TABLE 2.1
Air delivery - CFM air filter
RATING AND PERFORMANCE
Firing rate (USGPH) 1.20 1.35 1.50
Input (BTU/h) 168 000 189 000 210 000
Heating capacity (BTU/h) 138 000 155 000 171 000
Maximum heating temperature rise
BECKETT BURNER (3450 RPM)
Low firing rate baffle
Static disc, model
Nozzle (Delavan) 1.00 - 80B 1.10 - 80B 1.25 - 80B
Pump pressure (PSIG) 145 150 145
Combustion air adjustment (band / shutter) 1/3 1/5 1/7
AFUE %
(From CSA B212 standard andCanadian regulation)** 85,5% 84,9% 84,6%
AFUE %
(From ASHRAE 103 standard and US regulation)** 84,0% 83,5% 83,1%
RIELLO BURNER ; MODEL 40
Nozzle (Delavan) 1.00-70W 1.10 - 70W 1.25 - 70W
Pump pressure (PSIG) 145 150 145
Combustion air adjustment (turbulator / damper) 2.5/2 4/2 4/4
AFUE %
(From CSA B212 standard andCanadian regulation)** 86,7% 85,4% 84,6%
AFUE %
(From ASHRAE 103 standard and US regulation)** 85,4% 83,9% 83,3%
Volts - Hertz - Phase
Operating voltage range
Electrical load (Amps)
Minimum ampacity for wiring sizing
Max. fuse size (Amps)
Blower speed at 0.25" W.C. static pressure MED-HIGH HIGH HIGH
Blower speed at 0.50" W.C. static pressure HIGH HIGH N/A
Motor
Blower size
Filter quantity and size
GENERAL DATA
Overall W x L x H less burner
Shipping weight
Supply air duct W x L
Return air duct W x L .
Maximum cooling capacity
3/4 HP - 4 speeds
12'' x 10 DD (tight housing)
(2) 16" x 20"
15.7
18.1
20.0
BLOWER DAT
A
F5
(
TUBE INSERTION 3 9/16"
)
ELECTRICAL SYSTEM 115 - 60 - 1
104 - 132
18 - 29°C (65 - 85°F)
A
FG-F6
(
TUBE INSERTION 2 7/8"
)
NOTAPPLICABLE
2 3/4 #3383
5 tons
21.25" x 54.75" x 36.125"
242 lb
20" x 24"
20" x 22"

FIGURE 3
14
Model: AMT300B34-SM1PMB / OLR210F19C
DNS-0805 Rev. C

15
FIGURE 4
Wiring diagram, AMT300B34-SM1PMB / OLR210F19C heating only
DNS-1017 Rev. A

16
FIGURE 4.1
Wiring diagram, AMT300B34-SM1PMB / OLR210F19C heating and cooling option
DNS-1019 Rev. A

17
FIGURE 4.2
Ladder diagram, AMT300B34-SM1PMB / OLR210F19C
DNS-1020 Rev. A

18
Model : AMT300B34-SM1PMB / OLR210F19C
PARTS LIST
B50044B
ITEM PART # DESCRIPTION
1 B02740 Complete heat exhanger
2 B02748 Top divider
3 B03352-01 Filter support
4 B03189-01 Right side panel
5 B01766-01 Right side panel insulation
6 B02746-01 Lateral baffle
7 B02111 Observation door assembly
8 B02751 Corner conduit
9 F07F011 Hexagon nut 3/8-16NC zinc
10 B02754-01 Front panel assembly
11 B02756 Front panel insulation
12 B01014 Gasket, observation door
13 B01763 Wire channel
14 B01769-02 Floor assembly
15 B02781 Bottom divider assembly
16 B03189-02 Left side panel
17 B01766-02 Left side panel insulation
18 B02746-02 Lateral baffle
19 B01761-02 Filter support
20 Z04F010 Paper filter 16 x 20 x 1
21 B03201-02 Rear door assembly
22 Z99F050 Recessed handle, black
23 F07O001 Hexagon nut 3/8-16NC brass
24 B02753 Smoke box assembly
25 B02738 Gasket, smoke box
ITEM PART # DESCRIPTION
26 B03349-01 Rear top panel
27 B00711 Flue baffle
28 L99Z007 Rubber cap, oval
29 L01I005 Capacitor 15 MF
30 B01024 Capacitor support
31 B01756 Blower support
32 B01889 Belly band assembly
33A B03720-05 Blower support, 120-10TDD
33B Z01L003 Blower wheel 120-10DD
33C B01406-02 Blower assembly replacement
34A L06I004 Motor, 3/4HP, DD
34B B01891-01 Motor support assembly
35 Z01F006 Rubber grommet
36 R02I002 Fan-Limit control, 11 1/2"
37 B03351 Electrical kit, burner
38 L07F003 Rocker switch, SPST
39 B02757 Electrical box
40 B02782-04 Electrical box cover
41 J06L002 Seal strip (25' roll)
42 B02745 Divider plate
43 B02739 Gasket, top divider
44 B00524-02 Electrical kit
45 B03118-01 Electrical kit, BVSO Ext.
46 Z06G001 Blocked Vent Shut-Off, BVSO-225-A

FOURNAISE AU MAZOUT
À AIR CHAUD
DÉBIT ASCENDANT
Imprimé au Canada sur papier 100% recyclé
AMT300B34-SM1PMB
Modèles:
OLR210F19C
2013-06-05 X40090 Rév. M
Guide d’installation et
manuel du propriétaire
Fabriqué par:
Industries Dettson Inc
Attention
Ne pas altérer votre unité ou
ses contrôles. Appeler un
technicien qualifié.
INSTALLATEUR / TECHNICIEN :
Utiliser les renseignements dans ce manuel pour l’installation et l’entretien
de l’appareil et garder le document près de l’unité pour références
ultérieures.
PROPRIÉTAIRE :
S.V.P. Gardez ce manuel près de l’unité pour références ultérieures.
3400, Boulevard Industriel
Sherbrooke, Qc, Canada, J1L 1V8
www.dettson.ca

SECTION 1
INSTALLATION
3
POUR VOTRE SÉCURITÉ
L’INSTALLATION DOIT ÊTRE CONFORME AUX
RÈGLEMENTS LOCAUX ET NATIONAUX
APPLICABLES. AU CANADA, UTILISER LE CODE
D’INSTALLATION CSA B139 POUR LES APPAREILS
FONCTIONNANT AU MAZOUT. AUX ÉTATS-UNIS,
UTILISER LES CODES ANSI/NFPA S’APPLIQUANT.
UTILISER TOUT AUTRE CODE LOCAL
APPLICABLE.
NE PAS UTILISER L’APPAREIL DANS UN
ENVIRONNEMENT CORROSIF, CONTENANT
CHLORE, FLUORE OU TOUTES AUTRES
SUBSTANCES CHIMIQUES.
NE PAS RANGER OU UTILISER D’ESSENCE OU
TOUTES AUTRES SUBSTANCES INFLAMMABLES
À PROXIMITÉ DE L’APPAREIL.
1.1) LIBELLE DE SÉCURITÉ ET SIGNALISATION
DANGER, MISE EN GARDE ET AVERTISSEMENT
Comprenez bien la portée des mots suivants : DANGER, MISE EN
GARDE ou AVERTISSEMENT. Ces mots sont associés aux
symboles de sécurité. Vous les retrouverez dans le manuel de la
façon suivante :
DANGER
Le mot DANGER indique les plus graves
dangers, ceux qui provoqueront des blessures
corporelles sérieuses ou la mort.
MISE EN GARDE
L’expression MISE EN GARDE signifie un
danger qui peut entraîner des blessures
corporelles ou la mort.
AVERTISSEMENT
Quant au mot AVERTISSEMENT, il est utilisé
pour indiquer les pratiques dangereuses qui
peuvent provoquer des blessures corporelles
mineures ou des dommages à l’appareil ou à la
propriété.
1.2) RECOMMANDATIONS POUR UNE
INSTALLATION SÉCURITAIRE
MISE EN GARDE
L’installation ou les réparations par du personnel
non qualifié peuvent entraîner des risques pour
vous et les autres. L’installation DOIT être
conforme aux codes locaux ou, dans le cas
d’absence de codes locaux, elle doit être conforme
aux codes nationaux qui s’appliquent.
Les renseignements contenus dans ce manuel
s’adressent à un technicien qualifié, expérimenté
dans ce type de travail, au courant des précautions
à prendre, des règles de sécurité à respecter et
muni des outils appropriés ainsi que des
instruments de vérification adéquats.
Si les instructions de ce manuel ne sont pas
soigneusement suivies, cela peut causer un
mauvais fonctionnement de la fournaise, des
dommages à la propriété, des blessures
corporelles et/ou des pertes de vie.
MISE EN GARDE
Risque d’incendie
L’appareil doit être installé au niveau. Ne jamais
installer avec une inclinaison vers l’avant.
Si l’appareil est installé dans cette position, le
mazout peut couler dans le vestibule et créer un
risque d’incendie, au lieu d’être acheminé vers la
chambre de combustion.
NOTE : Il est de la responsabilité et de l’obligation du consommateur
de contacter un technicien qualifié pour s’assurer que l’installation est
conforme aux règlements locaux et nationaux.
a.
b.
c.
d.
e.
f.
g.
Cette fournaise N’EST PAS conçue pour être installée dans des
maisons mobiles, des caravanes ou des véhicules récréatifs ;
NE PAS utiliser cette fournaise comme chaufferette de
construction ou pour chauffer un bâtiment en construction ;
Utiliser uniquement le type de mazout autorisé pour cette
fournaise (voir la plaque signalétique sur l’appareil). Une
surchauffe provoquera une défectuosité de l’échangeur de
chaleur et un fonctionnement dangereux ;
Vérifier les lignes au mazout pour tout signe d’humidité indiquant
une fuite ;
S’assurer que la fournaise dispose d’une alimentation adéquate
d’air de combustion et de ventilation ;
L’évacuation des gaz de combustion doit s’effectuer par la
cheminée ;
Les points énumérés à la section 2 “Opération” sont essentiels
au fonctionnement normal et sécuritaire du système de
chauffage. S’assurer qu’ils ont tous étés bien suivis ;

4
h.
i.
j.
k.
l.
m.
n.
a.
b.
Suivre les règlements des codes d’installation NFPA No.31
(États-Unis) et CSA B139 (au Canada) ou des codes locaux
pour l’installation du réservoir de mazout ;
Le service d’entretien et l’inspection doivent être fait
régulièrement pour un rendement optimum et sécuritaire ;
Avant le service d’entretien, permettre à l’appareil de refroidir.
Toujours couper l’alimentation en mazout et l’électricité avant le
service. Ceci préviendra les décharges électriques et les
brûlures ;
Sceller les conduits d’alimentation et de retour d’air ;
Le système d’évacuation DOIT être vérifié pour s’assurer qu’il
est de la dimension et du type requis ;
Installer le format adéquat et le bon type de filtre ;
L’appareil DOIT être installé de telle sorte que les composantes
électriques soient protégées de tout contact direct avec l’eau.
1.2.1) Règles de sécurité
Votre appareil de chauffage est bâti pour vous procurer de
nombreuses années de service en toute sécurité à la condition qu’il
soit installé et entretenu adéquatement. Cependant, un usage abusif
ou inadéquat peut raccourcir sa longévité et provoquer des risques de
danger pour le propriétaire.
La U.S. Consumer Product Safety Commision (Commission
américaine pour la sécurité des biens de consommation)
recommande que les usagers d’appareils de chauffage au gaz
se munissent de détecteurs de monoxyde de carbone. Il existe
plusieurs sources de monoxyde de carbone dans un édifice ou
une résidence : sécheuse à linge fonctionnant au gaz, cuisinière
au gaz, chauffe-eau, fournaises, foyers alimentés au gaz et
biens d’autres encore. Le monoxyde de carbone peut causer
des blessures corporelles et même entraîner la mort. Ainsi, afin
d’être averti à temps d’un niveau de monoxyde de carbone
potentiellement dangereux, vous devriez faire installer dans
votre édifice ou résidence des détecteurs de monoxyde de
carbone autorisés par une agence reconnue sur le plan national
(ex. :Underwriters Laboratories ou International Approval
Services) et les maintenir en bon état (voir la note plus base).
Il existe plusieurs sources possibles de flammes ou de fumée
dans un édifice ou une résidence. Les flammes ou la fumée
peuvent causer de sérieuses blessures corporelles et même
entraîner la mort ou à tout le moins des dommages matériels.
Ainsi, afin d’être averti à temps d’un début de feu
potentiellement dangereux, vous devriez vous procurer des
extincteurs et faire installer dans votre édifice ou résidence des
détecteurs de fumée autorisés par une agence reconnue sur le
plan national comme Underwriters Laboratories et les maintenir
en bon état (voir la note plus base).
NOTE : Nous ne vérifions aucun détecteur et ne faisons la promotion
d’aucune marque ou type de détecteur.
AVERTISSEMENT
S’assurer que l’espace autour de l’entrée d’air de
combustion est libre de débris, neige ou glace.
1.2.2) Température froide et votre bâtiment
MISE EN GARDE
Risque de gel.
Couper l’alimentation en eau.
Si votre appareil demeure fermé durant les saisons
froides, les conduits d’eau peuvent geler, éclater et
provoquer des dégâts d’eau importants.
Votre appareil est muni de dispositifs de sécurité qui peuvent
l’empêcher de fonctionner si les détecteurs décèlent des conditions
anormales comme, par exemple, des conduits d’évacuation
encrassées.
Si le système de chauffage est laissé sans surveillance durant la
saison froide, prendre les précautions suivantes :
a.
b.
Fermer l’entrée d’eau principale de la maison ou édifice et vider
les conduits d’eau si possible. Ouvrir les robinets aux endroits
requis;
Demander à une personne de vérifier fréquemment durant la
saison froide s’il y a suffisamment de chaleur dans la maison ou
édifice pour éviter que les tuyaux gèlent. Suggérer à cette
personne d’appeler une agence de service qualifiée si cela est
requis.
1.2.3) Normes d’installation
Les codes locaux et nationaux gouvernant l’installation des
appareils au mazout, des installations électrique et d’évacuation
DOIVENT être suivies. Quelques-uns des codes applicables sont :
CSA B139 Code d'installation des appareils au mazout.
ANSI/NFPA 31 Installation de la fournaise à l’huile
ANSI/NFPA 90B Système de chauffage à air chaud et climatisé
ANSI/NFPA 70 Code National d’électricité
CSA C22.1 Code Canadien d'électricité
Seulement les versions les plus récentes de ces codes doivent être
utilisées.
1.3) EMPLACEMENT DE LA FOURNAISE
L’unité doit être installée dans un endroit où la température de l’air
ambiant et de l’air de retour sont supérieurs à 15°C (60°F).
AVERTISSEMENT
Vérifier attentivement votre appareil au moment de la
livraison. Des dommages ont put être causé durant le
transport et la manipulation. Toutes réclamations pour
dommage ou perte d’accessoire ou de pièce doivent
être faites à la compagnie de transport.
Cet appareil de chauffage central est approuvé pour un dégagement
réduit entre l’appareil et des constructions combustibles et dans tous
les cas, il doit être installé au niveau.