Olsen BMLV-80BRBU2, BMLV-90BRBU2, BML-80BRBU2, BMLV-60BRBU2, BML-60BRF2 Installation, Operation & Maintenance Manual

BML

(Lowboy Model)

BMLV

(Lowboy Model with ECM)

Series B

Oil Fired Warm Air Furnaces

INSTALLATION, OPERATION & MAINTENANCE MANUAL

ECR International

2210 Dwyer Avenue, Utica NY 13501

web site: www.ecrinternational.com

P/N 30149, Rev. G [12/15/2016]

Dimensions

F

1¾" (4.5cm)

H

G

E

D

C

B

A

Furnace

Model

BML

BMLV

WidthALengthBHeight

22" 51½" 32" 20½"x 19" 20½"x 18½" 5" 26¼" 20"x 20"x1" 240 LB

55.8 cm 130.8 cm 81.3 cm 52 cm x 49 cm

Cabinet Plenum Openings Flue

C

Supply

D x E

Return

F x G

52.1 cm x
47 cm

2

Diameter

12.7 cm 66.7 cm

Height

Filter

(Permanent)

H

51cm x 5cm x

2.6cm

P/N 30149, Rev. G [12/15/2016]

Shipping

Weight

(LB)

108 Kg

1. General ................................................................................................................................ 4

2. Safety Symbols ..................................................................................................................... 4

3. Introduction Models BML And BMLV .......................................................................................... 4

4. Heat Loss ............................................................................................................................. 4

5. Locating the Unit ................................................................................................................... 5

6. Furnace Used In Conjunction With Air Conditioning .................................................................... 5

7. Combustion Air ..................................................................................................................... 6

8. Chimney Venting ................................................................................................................... 6

9. Barometric Damper Control ..................................................................................................... 7

10. Optional Side Wall Venting ..................................................................................................... 7

11a. Fan Timer Board And Limit Control (BML) See Figure 3, page 15 ............................................... 7

11b. Fan Timer Board And Limit Control (BMLV) See Figure 4, page 15 ............................................. 7

12. Electrical Connections ........................................................................................................... 7

13. Humidier ........................................................................................................................... 8

14. Piping Installation ................................................................................................................ 8

15. Oil Filter ............................................................................................................................. 8

16. Oil Burner Nozzles ............................................................................................................... 8

17. Oil Burner Adjustment .......................................................................................................... 8

18. Burner Electrodes ................................................................................................................ 8

19. Burner Primary (Safety) Control ............................................................................................. 9

20. Combustion Chamber ........................................................................................................... 9

21a. Circulating Air Blower (BML/BMLV) ........................................................................................ 9

21b. Circulating Air Blower (BMLV) .............................................................................................10

22. Maintenance And Service .....................................................................................................11

23. Operating Instructions (BML) ................................................................................................12

24. Operating Instructions (BMLV) ..............................................................................................12

Appendix A: Checkout and Adjustments ................................................................................. 13

A.1 Oil Burner Air Adjustment ..................................................................................................14

A.2 Burner Electrodes .............................................................................................................15

A.3 Start Up ..........................................................................................................................15

A.4 Special Instructions For Units Equipped With Riello Burners .....................................................15

A.5 Final Check Out ................................................................................................................16

Appendix B: Wiring Diagrams ................................................................................................ 20

Chimney Vent Furnace Wiring Diagram BML/BMLV ......................................................................20

Direct Vent Furnace Wiring Diagram BML/BMLV ..........................................................................21

Appendix C - Sequence of Operation and Troubleshooting ..................................................... 22

C.1 Troubleshooting ................................................................................................................23

C.2 Preliminary Steps ..............................................................................................................23

C.3 Check Oil Primary Control ...................................................................................................23

Appendix D - Homeowner’s Reference Table .......................................................................... 27

Parts Listing: Chimney Vent Models BML80(B2,BRF2) and BMLV80(B2,BRF2) ....................... 28

Parts Listing: Direct Vent Models BML80(BB2U2,BRBU2) and BMLV80(BB2U2,BRBU2) .......... 30

Parts Diagram BML and BMLV ................................................................................................ 31

Check our website frequently for updates: www.ecrinternational.com

Information and specications outlined in this manual in effect at the

time of printing of this manual. Manufacturer reserves the right to

discontinue, change specications or system design at any time without

notice and without incurring any obligation, whatsoever.

3

P/N 30149, Rev. G [12/15/2016]

1. General

Furnace installation shall be completed by qualied agency.

See glossary for additional information.

WARNING

!

Fire, explosion, asphyxiation and electrical shock
hazard. Improper installation could result in death
or serious injury. Read this manual and understand
all requirements before beginning installation.

WARNING

!

Fire, burn, asphyxiation hazard. Do not use
gasoline, crank case oil, or any oil containing
gasoline. Failure to follow these instructions could
result in death or serious injury.

2. Safety Symbols

Become familiar with symbols identifying
potential hazards.

3. Introduction Models BML And BMLV

Models BML and BMLV are oil red forced air up-ow
furnaces with an output capacity range of 59,000 btu/hr to
89,000 btu/hr.

• BML models are equipped with 1/2 HP PSC 4 speed
blower motor.

• BMLV models are equipped with 1/2 HP ECM variable
speed blower motor.

Furnace models are either factory equipped for chimney
venting or factory equipped for direct venting.

Chimney vent models and direct vent models are not

eld convertible. Direct vent installation instructions are

included with the direct vent models.

Installation shall conform to requirements of
authority having jurisdiction or in absence of such
requirements:

• Canada - CAN/CSA - B139, Installation Code for Oil-
Burning Equipment.

• United States - National Electrical Code, NFPA31,

Standard for the Installation of Oil-Burning Equipment.

This is the safety alert symbol. Symbol alerts you to
potential personal injury hazards. Obey all safety messages
following this symbol to avoid possible injury or death.

!

DANGER

Indicates a hazardous situation which, if not avoided,
WILL result in death or serious injury

!

WARNING

Indicates a hazardous situation which, if not avoided,
could result in death or serious injury.

!

CAUTION

Indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury.

NOTICE

Used to address practices not related to personal
injury.

Models are CSA listed, (NRTL/C) for use with No. 1
(Stove) and No. 2 (Furnace) Oil.

Refer to tables in Appendix A for performance data.

4. Heat Loss

Maximum hourly heat loss for each heated space shall be
calculated in accordance with the procedures described in
the manuals of:

• Canada - The Heating, Refrigeration and Air
Conditioning Institute of Canada (HRAI), or by other
means prescribed, or approved by the local authority
having jurisdiction.

• United States - Manual J. titled, "Load Calculation"
published by the Air Conditioning Contractors of
America, describes a suitable procedure for calculating
maximum hourly heat loss.

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P/N 30149, Rev. G [12/15/2016]

5. Locating the Unit - [See Table 1]

• Locate furnace so ue connection to chimney is short,
direct and consists of as few elbows as possible.

• Centralize furnace location with respect to supply and
return air ductwork. Central location minimizes trunk
duct sizing.

• All models may be installed on combustible oors.

6. Furnace Used In Conjunction With Air
Conditioning

• Install furnace in parallel with or upstream from
evaporator coil to avoid condensation in heat
exchanger.

• When installed in parallel, prevent chilled air from
entering furnace by use of dampers or air controlling.

• Manually operated dampers must have a control to
prevent operation of either system unless dampers
are in full heat or full cool position.

• Air heated by the furnace shall not pass through

evaporator coil unless coil is specically approved for

such service.

Table 1: Minimum Installation Clearances

Clearance to Combustibles

Location

Top 1" (26 mm)
Bottom 0"

S/A Plenum 1" (26 mm)

Rear 6"** (152 mm)
Sides 1"* (26 mm)
Front 1"** (26 mm)

4" (102 mm) measured horizontally

Flue Pipe

8" (204 mm) measured vertically or

Enclosure Closet

*18 in. (458 mm) Required from 1 side for access to rear
** 24 in. (610 mm) Service Clearance

BML and BMLV

Lowboy

or below ue pipe

above ue pipe

• Check and adjust blower speed to compensate for
pressure drop caused by evaporator coil.

• Maintain required clearance between bottom of coil

drain pan and top of heat exchanger as specied by

coil manufacturer.

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P/N 30149, Rev. G [12/15/2016]

7. Combustion Air

Comply with CSA B139 (Canada) or NFPA 31 (U.S.)
standards for the Installation of Oil Burning Equipment
and applicable provisions of local building codes to provide
combustion and ventilation air.

WARNING

!

Asphyxiation hazard. Chimney vented versions of furnace

must be connected to ue having sufcient draft at all

times. Failure to follow these instructions could result in
death or serious injury.

8. Chimney Venting

• Flue pipe should be as short as possible with

horizontal pipes sloping upward toward the chimney

at a rate of one-quarter inch per foot.

• Flue pipe should not be smaller in cross sectional

area than ue collar on the furnace.

• Flue pipe should connect to chimney so the ue pipe

extends into, and terminates ush with the inside

surface of chimney liner. Seal the joint between pipe
and lining.

• Chimney outlet should be at least two feet above

highest point of peaked roof.

• All unused chimney openings should be closed.

• Chimneys must conform to local, provincial or state

codes, or in the absence of local regulations, to the
requirements of the National Building Code.

NOTICE

This furnace is approved for use with Type L vent or
equivalent. Maximum vent temperature for Type L
vent is 575°F (300C).

Manufacturer recommends over re draft of -0.02 in. w.c.
See gure 2.

Flue pipe must not pass through any oor or ceiling,
may pass through a wall where suitable re protection

provisions have been installed.

• Refer to CAN/CSA B-139 for rules governing the
installation of oil burning equipment.

• United States, refer to NFPA 31 for regulations
governing the installation of oil burning equipment.

See appendix A for burner set-up.

Figure 2 - Check Over-Fire Draft

Over-re draft access port.

6

P/N 30149, Rev. G [12/15/2016]

9. Barometric Damper Control

Barometric damper control, also known as draft regulator,
is used on conventional chimney venting only. Control
automatically maintains constant negative pressure.
Ensures proper pressures are not exceeded. If chimney

does not develop sufcient draft, draft control does not

function properly.

• Install draft regulator in same room or enclosure as
furnace. Draft regulator should not interfere with
combustion air supplied to the burner.

• Locate control near furnace ue outlet.

• Install per instructions supplied with regulator.

• Set over re draft, measured at oil burner mounting

plate over-re draft access port, to -0.02 in. w.c. See

Figure 2 page 6.

10. Optional Side Wall Venting

Certain BML and BMLV furnace models are manufactured
as sidewall vented units. Refer to Direct Venting Instructions,
P/N 240006979 included with Vent Kit for details.

Sidewall Venting (Direct Venting) requires use of specic oil
burners; Beckett AFII, or Riello 40BF.

Refer to Appendix A, Tables A2, and A4.

11a. Fan Timer Board And Limit Control (BML)
See Figure 3, page 15.

Electronic Fan Timer integrates control of burner and
circulator fan operations. Control is central wiring point for
most of furnace electrical components.

• United Technologies 1158-120 (BML) has an
adjustable fan on time set by selecting dipswitch
combination displayed in Chart 1. Fan on delay can
be set at 30, 60, 90 or 120 seconds. Provides a

delay between burner ignition and blower start-up
to eliminate excessive ow of cold air when blower

comes on.

• United Technologies 1158-120 (BML) has an
adjustable fan off time of 2, 3, 4 or 6 minutes as
displayed in Chart 1. Fan off delay time starts when

burner motor is de-energized at end of call for heat.

Blower shutdown is delayed to remove any residual
heat from heat exchanger.

• Electronic fan timer board works in conjunction with
snap disc limit controls, performing a safety function,
and breaks power to oil burner primary control,

shutting off burner if furnace over-heats.

• Limit control is thermally operated and automatically

resets. Limit control is factory installed, pre-set and

is not adjustable.

• If limit control opens with United Technologies 1158-
120 (BML) electronic fan control, circulating fan will
energize. When limit closes, fan off timer begins.
At the end of fan off time cycle burner is energized,
initiating normal burner cycle.

Chart 1- United Technologies 1158-120 (BML)

Dip Switch Position Blower Delay Times

1 2 3 4 On Seconds Off Minutes

Off Off 30
On Off 60
Off On 90
On On 120

Off Off 2
On Off 3
Off On 4
On On 6

11b. Fan Timer Board And Limit Control (BMLV)
[See Figure 4, page 15]

United Technologies 1168-1 ECM (BMLV) tap board has an
adjustable fan on/off delay and airow settings that must

be adjusted in accordance with furnace input rating (nozzle

size). Refer to Table A-9, page 17 for ECM blower set-up.

12. Electrical Connections

• Furnace is listed by Canadian Standards Association
under NRTL (North American) Standard.

• All eld wiring shall conform to CAN/CSA C22.1
Canadian Electrical Code, Part 1, and by local codes,
where they prevail.

• United States, wiring shall conform to National Fire

Protection Association NFPA-70, National Electrical

Code, and with local codes and regulations.

• Wire furnace to separate dedicated circuit in main
electrical panel.

• Suitably located circuit breaker can be used as
service switch, separate service switch is advisable.

• Service switch is necessary if circuit breaker is close
to the furnace, or furnace is located between circuit
breaker and entry to furnace room.

• Clearly mark service switch. Install in accessible area
between furnace and furnace room entry. Locate so
as to reduce possibility it can be mistaken as light
switch or similar device.

• Power requirement for BML and BMLV models is: 115
VAC, 1 Ø, 60 Hz., 12A.

• Accessory equipment such as electronic air cleaners

and humidiers may be included on furnace circuit.

• Accessories requiring 115 VAC power sources such

as electronic air cleaners and humidier transformers

may be powered from electronic fan timer board
where provisions have been made for connections,
but should have their own controls.

• Do not use direct drive motor connections as a power
source, there is risk of damaging accessories.

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P/N 30149, Rev. G [12/15/2016]

• Thermostat wiring connections are shown in wiring

diagrams in Appendix B. Some micro-electronic

thermostats require additional controls and wiring.

Refer to thermostat manufacturer's instructions.

• Locate thermostat approximately 5 feet above oor,
on inside wall, and where thermostat is exposed to
average room temperatures. Avoid locations where
thermostat is exposed to cold drafts, heat from
nearby lamps and appliances, exposure to sunlight,
heat from inside wall stacks, etc.

• Adjust thermostat heat anticipator to amperage
draw of heating control circuit as measured at "R"
and "W" terminals of thermostat. Do not measure
current with thermostat connected to the circuit.
Measure amperage by connecting ammeter between
two wires which connect to thermostat "R" and "W"
terminals.

13. Humidier

• Humidier is optional accessory available through
most heating supplies outlets.

• Follow humidier manufacturer's installation
instructions

• Protect furnace heat exchanger from water or water

droplets from humidier.

• Do not use direct drive motor connections as source

of power for 115 VAC humidiers and humidier

transformers.

16. Oil Burner Nozzles

BML and BMLV are certied for multiple ring rates, ranging
from 59,000 to 89,000 Btu/h output. Furnace may be red

at ideal rate for wide range of structures by manipulating

oil burner nozzle, ame retention head, and temperature
rise. Refer to Table A-1 thru A-4, and furnace rating plate

to determine proper combinations.

17. Oil Burner Adjustment

• Adjust burner air supply to maintain fuel to air ratio
to obtain ideal combustion conditions.

• Lack of air causes "soft" and "sooty" ames, resulting

in soot build-up throughout heat exchanger passages.

• Excess combustion air causes bright roaring re
and high stack temperatures resulting in poor fuel

efciency.

• BML and BMLV operate most efciently with No. 1
smoke spot on Bacharach Scale. Dust will eventually
build up on air moving components of oil burner
assembly resulting in decreased air supply with

potential soot build up in ue gas passageways

of heat exchanger. Soot behaves as insulator and
impairs good heat transfer. Stack temperature

increases, and efciency decreases. To avoid this

problem, adjust the air supply to provide no more
than trace smoke spot on Bacharach Scale.

• See Venting Instructions included in Vent Kits for set-
up details for sidewall vented furnaces.

14. Piping Installation

• Install fuel system in accordance with requirements

of CAN/CSA B-139, and local regulations.

• United States installation shall conform to NFPA No.
31 and local codes and authorities.

• Use only approved fuel oil tanks, piping, ttings and

oil lter.

• Install oil lter as close to burner as possible.

• Refer to instructions and illustrations in oil burner and
oil pump instructions shipped with the furnace.

15. Oil Filter

Install oil lter between fuel oil storage tank and oil burner.

When using oil burner nozzle smaller than 0.65 U.S.

Gallons Per Hour, install additional 7 to 10 micron lter as

close as possible to oil burner.

NOTICE

Set up sidewall vented models to deliver zero (0)
smoke.

NOTICE

Before operating furnace check burner alignment
with combustion chamber. End cone of air tube must
be centred to accommodating ring of combustion
chamber. Adjust as necessary.

18. Burner Electrodes

Correct positioning of electrode tips with respect to each
other, fuel oil nozzle, and burners is essential for smooth
light ups and proper operation.

Refer to oil burner instructions provided with furnace
and Appendix A Section A.2 in this manual for electrode

specications.

8

P/N 30149, Rev. G [12/15/2016]

NOTICE

Do not tamper with furnace controls they are
sensitive. If problems persist, call your service
contractor.

19. Burner Primary (Safety) Control

Furnace is equipped with primary combustion control, also
referred to as burner relay or burner protector relay, which
uses a cad cell located in burner housing, to monitor and
control combustion.

Dust or combustion residuals can build up on lens of cad

cell impairing its response to ame. Check cad cell for

cleanliness and proper alignment if primary control fre­quently shuts down combustion.

20. Combustion Chamber

Furnace is equipped with cerafelt combustion chamber, held
in place by a retaining bracket.

Check the alignment of the combustion chamber

and oil burner before ring. It is possible for the

combustion chamber to shift if subjected to rough
handling during transit.

Inspect combustion chamber for damage or carbon build
up whenever oil burner is removed for repairs or routine
maintenance.

WARNING

!

Fire, burn, asphyxiation hazard. Do not start the
burner unless blower access door is secured in
place. Failure to follow these instructions could
result in death or serious injury.

• Some older duct systems were not designed to
provide static pressure. They typically feature special

reducing ttings at each branch run and lack block

ends on the trunk ducts. These systems may require

modication to provide some resistance to the airow
to prevent over-amping of direct drive blower motor.

Selecting a lower blower speed may correct this
problem.

• Direct drive blower speeds are adjusted by changing
"hot" wires to motor winding connections. Refer to
wiring diagrams in Appendix B or wiring diagram

label afxed to furnace.

• Do not move neutral wire (normally white
wire) to adjust blower speed.

• Single blower speed for both heating and cooling

modes may be used. Use a "piggy-back connector"

accommodating both wires on a single motor tap.

• It is also acceptable to connect selected motor speed
with a pigtail joined to both heating and cooling
speed wires with a wire nut.

• Safety precaution against accidental disconnection of
wires by vibration, secure wire nut and wires with few
wraps of electricians tape.

• Do not connect power leads between motor
speeds. Always connect neutral wire to motor's
designated neutral terminal.

• If joining blower speed wiring is done in furnace
junction box, tape off both ends of unused wire.

• Do not use blower speed wires as source of
power to accessories as electronic air cleaners

and humidier transformers. Unused motor
taps auto-generate sufciently high voltages to

damage accessory equipment.

21a. CIRCULATING AIR BLOWER (BML/BMLV)

• BML furnace models may be equipped with either
direct drive or belt drive blower systems.

• BMLV furnace models are equipped with direct drive
blower systems.

• BML models are equipped with PSC motors.

• BMLV models are equipped with electronically
commutated motors (ECM).

Direct Drive Blower Systems

• Direct drive blower speed adjustments are not
normally required in properly sized extended plenum
duct systems. Motor RPM and air CFM delivery will
vary automatically to accommodate conditions within
usual range of external static pressures typical of
residential duct systems.

• Under-sized duct systems may require higher blower
speed to obtain system temperature rise.

Belt Drive Blower Systems

WARNING

!

Improper installation could result in death or serious
injury. Belt drive components operate at high speeds
and may snag loose clothing resulting in injury or
death. Have a trained service professional preform
the following instructions. Failure to follow these
instructions could result in death or serious injury.

Belt drive blower systems can be modied for speed and

air delivery by adjusting variable speed motor pulley and
changing blower pulley.

• Adjust variable speed motor pulley by loosening 5/32
allen set screw in outer sheave. Turn outer sheave
clockwise to increase blower speed, counter clockwise
to reduce speed.

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P/N 30149, Rev. G [12/15/2016]

• Verify setscrew is tightened at one of the at spots,
failure to do so will convert the variable speed pulley

to a xed speed pulley by ruining the threads.

• Modify blower speed by changing the blower pulley.
Smaller blower pulley will cause the blower to turn
faster. Large pulley reduces blower speed.

!

WARNING

Electrical shock hazard. Turn OFF electrical power
supply at service panel before opening blower
access door. Failure to do so could result in death or
serious injury.

• Large increases in the blower speed may increase
power requirements.

• Check amperage draw of the blower motor after
making changes. If amperage draw is greater than
the value listed on the motor rating plate, replace
with motor of higher horsepower.

• Deection of 3/4 of an inch to 1 inch fan belt tension

is necessary. Less deection places a strain on the

blower bearings and increases start up amperage
draw.

• More deection allows excess slippage and causes
premature motor pulley wear.

• Automotive belt dressings are not recommended.

• Bar soap will work as belt dressing to reduce belt
squeaks, etc. If using soap apply to the sides of belt
only.

If operating belt drive blower at speeds above 1100
RPM, replace sintered bronze blower bearings with roller
bearings.

21b. Circulating Air Blower (BMLV)

BMLV furnace models are equipped with electronically
commutated motors (ECM).

Setting Blower Speed and “ON” and “OFF” Timings

Blower speed and on/off time delays are handled by ECM
motor programming and are set via dipswitches per Table

A-9 on page 17. Heating airow rate is SW1 and on/off
delay is SW4, both are set according to ring rate. Cooling
airow rate is SW2 and if used is set according to installed
cooling capacity. SW3 can be used to adjust airow rate by
(+) or (-) 15%. Features of this ECM variable speed motor
are that it will deliver a constant airow within a wide range

of external static pressures, and also includes:

• Soft Start: ECM will slowly ramp up to required
operating speed. In heating cycle allows heat
exchanger to reach operating temperature before set
heat speed, minimizes noise and increases comfort.

• Soft Stop: At end of heating cycle, ECM will slowly

ramp down. Allows increased energy efciency and

reduced noise levels.

• Dehumidication: Dehumidication feature is

programmed into the variable speed motor. At start
of each cooling cycle, variable speed motor will run

at 82% of rated airow for 7.5 minutes. After 7.5
minutes has elapsed, motor will increase to 100% of
rated airow. Used to provide dehumidication and
improve system efciency.

10

• Continuous Fan Operation: When thermostat
continuous fan (G) switch is on without call for
heating or cooling, indoor fan is immediately

energized up to 50% of cooling speed. Allows

continuous circulation of air between calls for heating
or cooling. If call for heat (W) or cool (Y) occurs
during continuous fan, blower remains energized.

P/N 30149, Rev. G [12/15/2016]

22. Maintenance And Service

Routine Maintenance By Home Owner

• Arrange for professional servicing of furnace by the
service or installation contractor annually.

• Homeowner is to maintain air lter or lters. A dirty

lter can cause furnace to over-heat, fail to maintain

indoor temperature during cold weather, increase fuel
consumption and cause component failure.

• Inspect, clean or replace lter monthly.

• Furnace is supplied with semi-permanent type lter.

If lter is damaged, replace with lters of same size

and type.

• During monthly lter inspection, inspect general
condition of furnace. Watch for signs of oil leaks in
vicinity of oil burner, soot forming on any external
part of furnace, soot forming around joints in vent
pipe, etc. If any of these conditions are present,
please advise your service or installation contractor.

Annual Service By Contractor

NOTICE

Combustion chamber (repot) is fragile. Use care

when inspecting and cleaning this area

• If cleaning is necessary, shut off oil supply, shut off
power to the furnace and remove burner.

• Use stiff brush with wire handle, brush off scale and

soot from inside drum and ue pipe.

• Clean radiator, remove clean-out cap screws.
Remove caps carefully to avoid tearing gaskets.

• Wire brush can be used to loosen dirt and debris
on the inside surfaces of radiator. Clean out all
accumulated dirt, soot and debris with a wire handled
brush and an industrial vacuum cleaner.

• Before replacing clean-out caps, inspect gaskets. If
gaskets are broken, remove remnants and replace
with new gaskets.

• Blower motor is factory oiled and permanently
sealed. Do not lubricate. Excess oil causes
premature electric motor failure.

• Inspect blower fan. Clean if necessary.

• Oil Burner Maintenance: Follow oil burner
manufacturer instructions.

• Change oil burner nozzle and oil lter annually.

• Clean and inspect venting system for signs of
deterioration. Replace pitted or perforated vent pipe

and ttings.

• Inspect heat exchanger periodically and clean if
necessary.

!

WARNING

Electrical shock hazard. Turn OFF electrical
power supply at service panel before service or
maintenance Failure to do so could result in death or
serious injury.

• Barometric damper should open and close freely.

• Check electrical connections to ensure tight
connections. Safety controls such as the high limit
controls should be tested for functionality.

• Check fan control to ensure fan on and off delay
function continues to start and stop blower fan at
optimal settings.

11

P/N 30149, Rev. G [12/15/2016]

WARNING

!

Fire, burn, explosion, asphyxiation hazard.

• Do not start burner when excess oil has
accumulated, furnace is full of vapor, or
combustion chamber is very hot.

• Do not burn garbage or paper in furnace.

• Do not leave paper or rags around furnace.

Failure to follow these instructions could result in
death or serious injury.

23. OPERATING INSTRUCTIONS (BML)

Before Lighting

1.

Open all supply and return air registers and grilles.

2.

Open all valves in oil pipes.

3.

Turn on electric power supply

To Light Unit

1.

Set thermostat above room temperature to call for
heat. Burner should start. It may be necessary to
press RESET button on primary combustion control
relay.

2.

There is a fan on time delay before circulating fan

is energized. United Technologies 1158-120 has

adjustable fan on time set by selecting dipswitch
combination displayed in Chart 1. Fan on delay can be
set at 30, 60, 90 or 120 seconds.

3.

Set the thermostat below room temperature. Oil burner
stops.

4.

Air circulation blower continues to operate until time off
setting selected on electronic fan timer control times
out. United Technologies 1158-120 has adjustable
fan off time of
adjustments may be altered if air at room registers is
high upon blower start up or shutdown.

5.

Restore thermostat setting to comfortable temperature.

2, 3, 4 or 6 minutes.

Fan timer control

24. Operating Instructions (BMLV)

Before Lighting

1.

Open all supply and return air registers and grilles.

2.

Open all valves in oil pipes.

3.

Turn on electric power supply.

To Light Unit

1.

Set thermostat above room temperature to call for
heat. Burner should start. It may be necessary to
press RESET button on primary combustion control
relay.

2.

There is a fan on time delay before circulating fan is

energized. United Technologies 1168-1 has adjustable

fan on/off time delay programmed into ECM motor,
and is set by selecting SW4 DIP switch combination

displayed in Table A-9 page 17. Adjust Fan on/off

delay according to input (nozzle size).

3.

Set thermostat below room temperature. Oil burner
stops.

4.

Air circulation blower continues to operate until blower
off delay setting programmed into ECM motor times
out.

5.

Restore thermostat setting to comfortable temperature.

NOTICE

If furnace is to be shut down for extended period of
time, close oil supply valve to burner.

To Shut Down Unit

1.

Set thermostat to lowest possible setting.

2.

Set manual switch (if installed) in electrical power
supply line to "OFF".

12

P/N 30149, Rev. G [12/15/2016]

APPENDIX A - CHECK OUT AND ADJUSTMENTS

Check out and adjustments

BML and BMLV furnaces may be used with following oil burners.

Beckett AF, and Riello 40F oil burners are for applications using indoor air for combustion only.

Sidewall venting applications utilizing outdoor air for combustion, use Beckett AFII or Riello 40BF (Balanced Flue) oil burners
only.

Table A-1 Beckett AF Oil Burner Set-Up

Beckett AF Series Oil Burners

(For use with chimney vented units only)

Furnace

Model

BML-60B2

2

Output

BTU/Hr

Burner

Model

Delavan

Nozzle

Pump

Pressure

59,000 AF76BNHS 0.50 / 80°A 100 psig 0.50 usgph F3 3- ⅜ in.

BMLV-60B2²

BML-80B2

76,000 AF76BNHS 0.65 / 80°A 100 psig 0.65 usgph F3 3- ⅜ in.

BMLV-80B2

BML-90B2

85,000 AF76BNHS 0.75 / 80°A 100 psig 0.75 usgph F3 3- ⅜ in.

BMLV-90B2

1

Head is shielded by ceramic insulator.

2

Low Firing Rate Bafe required when using 0.50-gallon nozzle.

Table A-2 Beckett AFII Oil Burner Set-Up

Beckett AFII Series Oil Burners

(For use with sidewall vented units with outdoor combustion air,

or chimney vented units with indoor air for combustion)

Furnace Model

Output

BTU/Hr

Burner

Model

Delavan

Nozzle

BML-60BB2U2

59,000 AFII-85 0.50 / 60°A 115 psig 0.50 usgph FB0

BMLV-60BB2U2

BML-80BB2U2

76,000 AFII-85 0.60 / 60°A 145 psig 0.65 usgph FB3

BMLV-80BB2U2

BML-90BB2U2

88,000 AFII-85 0.70 / 60°A 145 psig 0.75 usgph FB3

BMLV-90BB2U2

Flow Rate Head

Pump

Pressure

Static

1

Plate

Flow Rate Head

13

P/N 30149, Rev. G [12/15/2016]

APPENDIX A - CHECK OUT AND ADJUSTMENTS

Table A-3 Riello 40F Series Oil Burner Set-Up

Riello 40F Series Oil Burners

(For use with chimney vented units)

Furnace Model

Output

BTU/Hr

Burner

Model

Delavan Nozzle

Pump

Pressure

Flow Rate Air Gate

Turbulator

Setting

BML-60BRF2

60,000 40F3 0.50 / 60°W 105 psig 0.50 usgph 2.6 1.0

BMLV-60BRF2

BML-80BRF2

77,000 40F3 0.60 / 60°W 120 psig 0.65 usgph 2.6 1.5

BMLV-80BRF2

BML-90BRF2

88,000 40F3 0.65 / 60°W 135 psig 0.75 usgph 3.6 2.0

BMLV-90BRF2

Table A-4 Riello Balanced Flue (40BF) Burner Set-Up

Riello 40BF Balanced Flue Series Oil Burners

(For use with sidewall vented units using outdoor combustion air)

Furnace Model

Output

BTU/Hr

Burner

Model

Delavan

Nozzle

BML-60BRBU2

61,000 40BF3 0.50 / 60°W 105 psig 0.50 usgph 1.0

BMLV-60BRBU2

BML-80BRBU2

78,000 40BF3 0.60 / 60°W 120 psig 0.65 usgph 1.5

BMLV-80BRBU2

BML-90BRBU2

89,000 40BF3 0.65 / 60°W 135 psig 0.75 usgph 2.0

BMLV-90BRBU2

Pump

Pressure

Flow Rate

Turbulator

Setting

NOTE: Air gate setting may vary for sidewall vented units where air gate must be adjusted to achieve zero smoke.

A.1 OIL BURNER AIR ADJUSTMENT

Consult oil burner instructions provided in furnace

documents envelope for specic information concerning

burner adjustments, operation and troubleshooting.

Beckett AF Burner (Chimney Vent)

Adjust air shutter by loosening locking screws. Moving air
shutter, and if necessary, bulk air band.

Beckett AFII Burner (Direct Vent)

Adjust burner air supply. Loosen locking screw located on
black dial to right of burner. Turn black dial clockwise to

increase combustion air and counter-clockwise to decrease
combustion air. Re-tighten locking screw after obtaining

proper setting.

Riello 40F3 Burner (Chimney Vent)

Combustion air is adjusted by removing burner cover.
Loosen screws that secure air adjustment plate. Move
adjusting plate to either increase or decrease combustion

air. When proper air setting is achieved, retighten xing

screws.

Riello 40BF3 Burner (Direct Vent)

Combustion air can be adjusted with burner cover on.
Remove plastic cover on top right hand side of burner
cover. With phillips head screw driver, turn adjustment

screw clockwise to increase combustion air or counter-

clockwise to decrease combustion air. When combustion air

is set, re-insert plastic cover.

14

P/N 30149, Rev. G [12/15/2016]

APPENDIX A - CHECK OUT AND ADJUSTMENTS

A.2 Burner Electrodes

Adjustment of electrode tips with respect to each other,
nozzle, burner head is very important to ensure smooth

start-ups and to permit efcient combustion.

Beckett AF and AFII Burners

• Electrode gap: 5/32 inch.

• Distance above horizontal center-line: 5/16 inch.
Older instruction sheets specify 7/16 inch. Current

specication is 5/16 inch.

• Distance ahead of nozzle: 1/16 inch.

• “Z” dimension, distance from front of end cone

(head) to face of nozzle should be 1-1/8 inches. If

ceramic head is used, distance from end cone to

nozzle face is increased to 1-3/8 inches.

Riello 40F, & BF Burners

• Electrode gap: 5/32 inch.

• Distance above horizontal center-line: 13/64 inch.

• Distance ahead of nozzle: 5/64 to 7/64 inch.

A.3 Start Up

Use following instructions to set the burner:

1.

Shut off electrical power to the furnace.

2.

Install oil pressure gauge to pressure port on oil pump.

(Refer to oil pump specication sheet included with

burner instructions).

3.

Restore electrical power to furnace.

4.

Start furnace and bleed all air from fuel oil lines.

5.

Close purge valve and re the unit.

6.

Allow furnace to warm up to normal operating
temperatures. During this time, set pump pressure in

accordance with data provided in Appendix A, Table A-1
thru A-4.

7.

Chimney vented units - Drill 1/4" test port in
venting between furnace ue outlet and draft regulator

(barometric damper) to take smoke readings.

8.

Sidewall vented units - Do not drill. Use test port

in the supplied appliance connector to take smoke
readings.

9.

When furnace has reached "steady state" (after ap­proximately 10 minutes). Set combustion air damper
to get TRACE of smoke for chimney vented units and
ZERO smoke for sidewall vented units.

10.

Check system temperature rise. Temperature rise is the
difference between return air temperature measured at
a point near return air inlet, and supply air temperature
measured near furnace outlet.

System temperature rise is listed on furnace rating

plate. If temperature rise is too high, airow must

be increased. If temperature rise is too low, slow fan
down.

11.

After air adjustments have been completed, recheck

the over re draft at test port on burner mounting plate
shown in Figure 2. Over re draft should be adjusted to

-0.02 inches w.c.

12.

Turn burner off. Observe duct thermometer in supply
air stream, note temperature blower fan stops. Fan
adjustments can be made by moving dipswitch settings
on timer control board for fan off delay.

13.

Check operation of limit switch.
A. Shut off power to furnace.

B. Temporarily remove neutral wire from PSC blower

motor or remove 5 pin power connector from ECM
blower motor. Isolate AC line voltage pins on 5 pin
power connector with electrical tape to prevent

electric shock hazard.
C. Restore electrical power to furnace.
D. Set thermostat above room temperature.
E. After three or four minutes of burner operation,

limit control should turn burner off.
F. When limit function test is complete, shut off

electrical power to furnace, replace neutral wire to

PSC blower motor or 5 pin power connector to ECM

blower motor. Restore power.
G. Blower fan will start up immediately. Once

temperature has dropped and limit control has

reset, fan will operate until fan off time is reached.
H. Oil burner will resume operation and continue until

thermostat is satised.

I. Restore thermostat setting to comfortable

temperature.

14.

Set heat anticipator adjustment in thermostat (if so
equipped), by removing "R" or "W" wire to thermostat.
Read amperage draw between the two wires. Failure
to remove one of the wires from thermostat while
performing this test could burn out heat anticipator.
Set heat anticipator to amperage measured.

15.

Run furnace through at least three full cycles before
leaving the installation, to ensure all controls are
operating properly.

16.

Check all joints in any positive pressure venting system
for leaks before leaving the installation site

A.4 Special Instructions For Units Equipped With
Riello Burners

Riello specications are listed in Tables A-1 and A-4.

Consult Riello Installation Instructions supplied with Burner

for specic information concerning burner adjustments,
operation, and trouble-shooting.

15

P/N 30149, Rev. G [12/15/2016]

APPENDIX A - CHECK OUT AND ADJUSTMENTS

A.5 Final Check Out

Verify all safety devices and electrical components have
been set for normal operation.

Verify all electrical connections are tight and wiring is
secure.

Verify homeowner is informed and understands:
Where circuit breaker or fuse is located in main electrical

panel.
Where furnace switch is located, and switch "on" and "off"

positions if not obvious.

FIGURE 3: UNITED TECHNOLOGIES 1158-120 FAN
TIMER BOARD (BML)

Where oil shut-off valve from oil storage tank is located.

Thermostat operation, and other related accessories.
How to operate manual reset button on primary control,

and when not to push the reset button.
How and where to visually inspect venting system for leaks

or other problems.

How to inspect, clean and replace air lter, and other

homeowner maintenance procedures.
Who to call for emergency service and routine annual

service.

FIGURE 4: UNITED TECHNOLOGIES 1168-1 ECM
TAP BOARD (BMLV)

16

P/N 30149, Rev. G [12/15/2016]

Tons Power CFM Range

APPENDIX A - CHECK OUT AND ADJUSTMENTS

CFM

External Static Pressure – Inches w.c.

Blower Set-Up Cooling Capacity

0.20 in. w.c. 0.50 in. w.c.

Speed Motor Speed Motor

0.20 0.30 0.40 0.50 0.60

High 1722 1645 1561 1462 1375

Med-High 1604 1545 1473 1383 1302

Low 747 738 720 702 669

Med-Low 1147 1133 1106 1063 1013

CFM RANGE

Heating Cooling

0.38 - 0.48 inches w.c. 0.5 inches w.c.

Fan

Continuous

Blower Motor HP Motor FLA ∆T Speed

BML-60 100-10T DD Low 1/2 HP Med-Low 1/2 HP 3.5 1/2 HP 700-1400

BML-80 100-10T DD Med-Low 1/2 HP Med-Low 1/2 HP 3.5 1/2 HP 700-1400

BML-90 100-10T DD Med-Low 1/2 HP Med-High 1/2 HP 3.5 1/2 HP 700-1400

Furnace Model Blower

Table A-6 Direct Drive Blower Set-Up PSC Motor

Table A-7 Direct Drive Blower Characteristics PSC Motor

Model

Furnace

100-10T DD 1/2 HP 7.1 70°F

BML

60 – 90

1/2 HP ECM 7.7 70°F 470-635 625 - 1500 600 - 1200

Blower Motor HP Motor FLA ∆T

Model

Furnace

DD

100-10T

BMLV

60 – 90

TIP

Formulas will assist with design of duct-work and determination of air ow delivery.

CFM = Bonnet Output / (1.085 x System Temperature Rise (∆T)

System Temperature Rise (∆T) = Bonnet Output / (1.085 x CFM)

Table A-8 Direct Drive Blower Characteristics ECM Motor

17

P/N 30149, Rev. G [12/15/2016]

APPENDIX A - CHECK OUT AND ADJUSTMENTS

(TON)

AC Size

POS.

SW2 - COOL

1 2

DIP Switch Position

INPUT

OFF OFF A 3

ON OFF B 2.5

INPUT

POS.

ON ON D 1.5

OFF ON C 2

SW4 - DELAY

CFM

OFF OFF A 0.65

DIP Switch Position

1 2 USGPH

ON OFF B 0.85

OFF ON C 0.75

ON ON D 0.50

POS.

SW1 - HEAT

Dip Switch Adjustment Chart

For Input 0.50 USGPH TO 0.85 USGPH

1 2 USGPH

DIP Switch Position

OFF OFF A 0.65

ON OFF B 0.85

Table A-9 ECM Blower Set-Up (BMLV)

OFF ON C 0.75

ON ON D 0.50

POS.

SW3 - ADJUST

1 2

ON OFF B (+)15%

OFF OFF A 0%

DIP Switch Position

18

ON ON D N/A

OFF ON C (-)15%

NOTE:

SW1 (HEAT) AND SW4 (DELAY) DIP SWITCHES MUST BOTH BE ADJUSTED ACCORDING TO INPUT (NOZZLE SIZE).

SW2 (COOL): 1 TON is approximately equal to 400 CFM

SW3 (ADJUST): (Heating Mode) Increase OR decrease temperature rise respectively

(Cooling Mode) Increase OR decrease CFM respectively

P/N 30149, Rev. G [12/15/2016]

CFM

Range

Tons Motor

APPENDIX A - CHECK OUT AND ADJUSTMENTS

CFM

Belt Motor

Pulley

Blower Set-Up Cooling Capacity

Belt Motor

7 x ¾ 4L380 1/2 HP 3¼ x ½ 7 x ¾ 4L380 1/2 HP 1.5-3.5 1/2 HP 600-1400

0.20 in. w.c. 0.50 in. w.c.

Pulley

Motor Blower Motor Blower

7 x ¾ 4L380 1/2 HP 3¼ x ½ 7 x ¾ 4L380 1/2 HP 1.5-3.5 1/2 HP 600-1400

7 x ¾ 4L380 1/2 HP 3¼ x ½ 7 x ¾ 4L380 1/2 HP 1.5-3.5 1/2 HP 600-1400

0.20 0.25 0.30 0.40 0.50 0.60

External Static Pressure – Inches w.c.

Turns Out

Motor Pulley

Pulley

Blower

0 1410 1341 1272 1145 996 820

1 1277 1211 1145 970 790 598

2 1154 1077 1002 809 598 403

3 1030 929 829 630 424 178

3¼ x ½ 3 T.O.

3¼ x ½ 2 T.O.

3¼ x ½ 0 T.O.

Blower

Fur-

nace

Model

BML-60 100-10T

BML-80 100-10T

Table A-10 Belt Drive Blower Set-Up

BML-90 100-10T

Table A-10 ECM Blower Set-Up (BMLV)

Motor HP Motor FLA ∆T Blower

Model

Furnace

Table A-11 Airow Characteristics - Belt Drive

19

1/2 HP 7.8 70°F 100-10T 7 x ¾

BML 60-90

P/N 30149, Rev. G [12/15/2016]

APPENDIX B - WIRING DIAGRAMS

Chimney Vent Furnace Wiring Diagram BML/BMLV

20

P/N 30149, Rev. G [12/15/2016]

APPENDIX B - WIRING DIAGRAMS

Direct Vent Furnace Wiring Diagram BML/BMLV

21

P/N 30149, Rev. G [12/15/2016]

APPENDIX C - SEQUENCE OF OPERATION AND TROUBLESHOOTING

Table C-1: 1158-120 Electronic Fan Timer Board (EFT) Detailed Sequence Of Operation (BML)

Mode Action System Response

EFT closes the oil primary control T - T connections.
Ignition system and the oil primary control start the furnace. Oil ows as long as the oil
primary control senses ame.

Burner motor is energized and heat "fan on" delay timing begins. When timing is complete, the
circulator fan is energized at heat speed.

The oil primary control is de-energized, terminating the burner cycle.

Heat "fan off" delay timing begins. Length of delay depends on EFT dipswitch settings. When

timing is complete, the circulator fan is de-energized.

EFT returns to standby mode, (Oil primary control and circulator fan are off, unless continuous
fan operation is selected at the thermostat).

HEAT

Thermostat calls for heat. ("W"
terminal is energized).

Thermostat ends call for heat.

("W" terminal is de-energized).

COOL

FAN

LIMIT

FAN

Burner fails to light.

Established ame fails.

Thermostat begins call for cool.
(G and Y terminals are ener­gized).

Thermostat ends call for cool.

(G and Y terminals are de-ener-

gized).

Thermostat begins call for fan. (G
terminal is energized).

Thermostat ends call for fan. (G

terminal is de-energized).

Limit switch string opens.

Limit switch string closes (with
existing call for heat).

Limit switch string closes (with­out existing call for heat).

Continuous circulating fan is con­nected.

Oil primary control locks out within lockout timing, (15 seconds).

Burner motor is de-energized. (Even though thermostat is still calling for heat).

If circulator fan has started, it continues through the selected heat “fan off” delay period.

Burner motor is de-energized and oil primary control goes into recycle mode.

If the selected heat “fan off” delay timing is longer than the recycle delay timing, the circulator
fan continues to run through the next trial for ignition.

Cooling contactor is energized immediately.
Circulator fan is energized at cool speed.

Cooling contactor is de-energized immediately.

Circulator fan turns off immediately.

Circulator fan is energized immediately at cooling speed.

Circulator fan is de-energized immediately.

Oil primary control shuts off burner.
Circulator fan is energized immediately at heat speed.

EFT opens the oil primary control T - T connections. Circulating fan runs as long as limit string

stays open.
If there is a call for cooling or fan, the circulating fan switches from heating to cooling speed.

EFT begins heat “fan off” delay sequence.
Circulating fan turns off after the selected heat “fan off” timing.

EFT re-closes the oil primary control T - T connections.

Oil primary control is energized, initiating burner light off.

Circulator fan turns off when heat “fan off” delay time is complete.
Normal operation resumes; EFT control is in standby mode awaiting next thermostat com­mand.

Circulating fan is energized when there is no call for heat, cool, or fan.
If fan operation is required by a call for heat, cool, or fan, the EFT switches off the continuous
fan speed tap before energizing the other fan speed.

EAC

HUM Humidity control is connected. Humidier connections are energized when the oil burner motor is energized.

Electronic Air Cleaner is con­nected.

Electronic air cleaner (EAC) connections are energized when the heat or cool speed of the cir­culator fan is energized. EAC connections are not energized when the optional continuous fan
terminal is energized.

1168-1 Electronic Fan Timer Board (EFT) Detailed Sequence Of Operation (BMLV)

Thermostat Input LEDs (LED1-5, LED8)

Six green LEDs are placed behind their respective thermostat connections (Y1, Y/Y2, G, DH, O, and W) and operate whenever a call is
present.

Thermostat calls for heat “W”. The 24VAC input signal is passed to pin 2 of P1 and will drive the K1 relay that provides dedicated

contacts to the T-T input of the Oil Primary Control. Thermostat calls for cool “Y1”. The 24VAC input signal is passed to pin 6 of P1.
Thermostat calls for fan “G”. The 24VAC input signal is passed to pin 15 of P1. Thermostat calls for dehumidication “DH”.

The 24VAC input signal is passed to pin 10 of P1. Thermostat calls for reversing valve “O”. The 24VAC input signal is passed to
pin 9 of P1.

22

P/N 30149, Rev. G [12/15/2016]

APPENDIX C - SEQUENCE OF OPERATION AND TROUBLESHOOTING

C.1 Troubleshooting

!

WARNING

Electrical shock hazard. Only a trained, experienced
service technician should perform troubleshooting
procedure. Failure to do so could result in death or
serious injury.

C.2 Preliminary Steps:

Consult Beckett or Riello instruction manuals provided

with oil burner for specic information regarding oil burner

primary control sequence of operation, diagnostics and
troubleshooting.

Check diagnostic light for indications of burner condition.

NOTICE

When simulating call for heat at oil primary
control, disconnect at least one thermostat lead

wire from T - T terminals to prevent damage to

thermostat. Neglecting this procedure may burn out
heat anticipator of standard 24 vac thermostat, or

cause harm to components within micro-electronic

thermostat.

Before checking oil primary control, perform these
preliminary checks, repair or replace controls as necessary:

• Check power supply, fuse box or breaker, any service
switches, all wiring connections, and burner motor
reset button (if equipped).

• Check limit switches to ensure switch contacts are
closed.

• Check electrode gap and position.

• Check contacts between oil primary control and
electrodes.

• Check oil supply (tank gauge).

• Check oil nozzle, oil lter, and oil valves.

• Check piping or tubing to oil tank.

• Check oil pump pressure.

C.3 Check Oil Primary Control

If the trouble does not appear to be in the burner or ignition
hardware, check the oil primary control per manufacturer's
instructions inlcuded with oil burner.

23

P/N 30149, Rev. G [12/15/2016]

APPENDIX C - SEQUENCE OF OPERATION AND TROUBLESHOOTING

!

WARNING

Electrical shock hazard. Only a trained, experienced
service technician should perform troubleshooting
procedure. Failure to do so could result in death or
serious injury.

Table C2: System and General Troubleshooting

Problem Possible Cause Remedy

Furnace will not start.

Thermostat not calling for heat

No power to furnace

Thermostat faulty

Oil primary control faulty

Photo Cell wiring shorted or
room light leaking into photo
cell compartment

Open safety switch

No fuel oil

Check thermostat and adjust.
Check thermostat for accuracy; if mercury switch type, it might be off level.

Check furnace switch, main electrical panel furnace fuse or circuit breaker.
Look for any other hand operated switch, such as old poorly located furnace
switch, which was not removed during furnace replacement.

Remove thermostat wires from oil primary control terminals T-T. Place a
jumper across T-T. If furnace starts, replace thermostat, thermostat sub-base

(if equipped), or both.

Check reset button on oil primary control.

Remove thermostat wires from oil primary control terminals T - T.
Check for 24V across T -T. If no voltage is present, check for 115V to oil

primary control.
If 115V is present, refer to oil primary control documentation provided with
oil burner.

Check photo cell (cad cell) wiring for short circuits.
Check for room light leaking into cad cell compartment. Repair light leak if
necessary.

Check for open limit or auxiliary limit.
Check internal wiring connections; loose connectors, etc.

Check fuel oil supply.
Check all hand operated fuel oil valves are in open position. Fill oil storage
tank if necessary.

Clogged nozzle

Furnace will not start

without rst pushing oil

primary control reset

button.

(Happens on frequent

basis)

Clogged oil lter Replace oil tank lter or in-line lter if used.

Low oil pump pressure

Air getting into fuel oil lines, or
fuel oil line dirty, clogged, or in
some manner defective

Defective burner motor

Replace nozzle with high quality replacement.
Use rating plate or Tables in Appendix A as a guide.

Connect pressure gauge to oil pump.
Adjust pump pressure, or replace oil pump if necessary.
Verify erratic pressure readings are not caused by defective fuel oil line.

Check fuel oil lines.

Replace any compression ttings found with high quality ared ttings.

Check for signs of oil leaks. Any oil leak is potential source of air or
contaminants.

Check burner motor.

If burner motor is cutting out on over-load, determine why. Replace if neces-

sary.

24

P/N 30149, Rev. G [12/15/2016]

APPENDIX C - SEQUENCE OF OPERATION AND TROUBLESHOOTING

Table C-2: System and General Troubleshooting continued

Problem Possible Cause Remedy

Furnace starts, but cuts
out requiring manually re­setting oil protector reset
button.

Furnace starts, but cuts
out requiring manually re­setting oil protector reset
button.

If cad cell is dirty, clean it. Determine why cad cell is getting dirty. If cad
cell is poorly aimed, realign it.

Photo Cell (Cad Cell) defective.

No fuel oil.

Clogged nozzle.

Clogged oil lter. Replace oil tank lter or in-line lter if used.

Low oil pump pressure.

Air getting into fuel oil lines, or
fuel oil line dirty, clogged, or in
some manner defective.

Defective burner motor.

Water or contaminants in oil. Drain fuel oil storage tank; replace fuel oil. (Consult with fuel oil supplier).

NOTE: Photocell should have resistance of 100 KΩ in absence of light;
maximum of 1500 Ω in presence of light.

Verify room light is not leaking into the cad cell compartment. (See diag­nostic light section).

Check fuel oil supply.
Check that all hand operated fuel oil valves are in the open position.
Fill oil storage tank if necessary.

Replace nozzle with high quality replacement. Use rating plate or Tables in
Appendix A as a guide.

Connect pressure gauge to oil pump.
Adjust pump pressure, or replace oil pump if necessary.
Verify erratic pressure readings are not caused by defective fuel oil line.

Check fuel oil lines. Replace any compression ttings found with high qual­ity ared ttings.

Check for any signs of oil leaks. Any oil leak is a potential source of air or
contaminants.

Check burner motor.

If burner motor is cutting out on over-load, determine why.

Replace if necessary.

Oil burner sputtering at
nozzle

Excessive fuel oil
consumption.

Frozen oil line.

Electrodes out of adjustment or
defective.

Poor igniter connections or
defective igniter.

Fuel oil lter clogged. Replace fuel oil storage tank lter and / or fuel oil in-line lter.

Defective oil pump.

Fuel oil line partially clogged or
contains air.

System temperature rise too
high.

Poor “fan off” delay timing se­lection, (fan stops too soon).

Fuel oil leak. Check fuel oil line for leaks. Repair or replace if necessary.

Gently warm oil line.
Insulate oil line. (Outdoor piping size may require increased diameter).

Check electrode settings.

Check electrodes for dirt build-up or cracks in porcelain.

Check contacts between the igniter and electrodes. If OK, replace the
igniter

Check burner motor and / or fuel oil pump coupling.
Check oil pump pressure. Replace fuel oil pump if necessary.

Bleed air from oil line.
If problem persists, replace oil line.

System temperature rise should not exceed 75°F. Check for clogged air l­ters. Check blower fan for excess dirt build-up or debris. Speed up blower

fan if necessary.

Check “fan off” delay timing setting. Use duct thermometer in supply air

plenum take-off or rst few inches of supply air trunk duct. Fan should
shut off at 90° - 100°F. Manipulate dip switch settings to come as close as

possible to this “fan off” temperature.

Stack temperature too high.

Thermostat improperly adjusted
or in poor location.

Check stack temperature. Stack temperatures will normally range from

400° to 500°F. Check draft regulator. Draft should be set to -0.02 in. w.c.

Check thermostat heat anticipator setting against measured amperage
draw. Increase heat anticipator setting if necessary. If thermostat is being

inuenced by drafts, sunlight, duct work, etc., relocate to suitable location.

25

P/N 30149, Rev. G [12/15/2016]

APPENDIX C - SEQUENCE OF OPERATION AND TROUBLESHOOTING

Table C-2: System and General Troubleshooting continued

Problem Possible Cause Remedy

Too much smoke.

Soot building up on blast
tube (end coning).

Furnace will not warm
home to desired
temperature.

Insufcient combustion air

adjustment at oil burner, or
improper draft pressure.

Heat exchanger partially
clogged.

Poor alignment between oil

burner blast tube and re pot.

Flame impingement caused by
Incorrect nozzle angle.

Defective re-pot Check re-pot. Repair or replace.

Airow blocked or dirty air lter. Clean or replace air lter.

Thermostat adjustments or
location.

Insufcient airow.

Defective high limit control.

Adjust oil burner combustion air band and draft regulator to gain highest

practical CO2 or lowest practical O2 content in ue gases.

See Burner Set Up.

Check for soot build-up in heat exchanger ue passages, especially in

outer radiator.

Check alignment. Blast tube should be centered with re pot burner
opening. Oil burner head should be ¼ inch back from inside surface of re

pot.

Check nozzle size and angle. (See Appendix A).

Check distance from head to inside surface of re pot.

Check thermostat heat anticipator setting against measured amperage
draw. Increase heat anticipator setting if necessary. If thermostat is being

inuenced by drafts, sunlight, duct work, etc., relocate to suitable location.

Check all dampers. Open closed dampers including registers in unused
rooms.
Check system temperature rise. If temperature rise is too high, speed up
blower fan.

Test high limit function of all limit switches. Use duct thermometer to verify
accuracy of limit control.

Check for obstructions to airow around limit switch bimetal elements.

Replace control if necessary.

Home does not heat
evenly

Supply air temperature
too hot.

Supply air temperature
too cool.

Supply air temperature

too cool during rst

moments of furnace cycle.

Under-sized nozzle.

Blower fan motor stopping
intermittently on overload.

Burner motor stopping
intermittently on overload.

Improper distribution of heat. This is not likely to be a furnace problem. Balance duct system.

Airow blocked or dirty air lter. Clean or replace air lter.

Insufcient airow.

Excess airow. Check system temperature rise. Slow down blower fan if necessary.

Excessive duct losses.

Fan control "fan on" setting too
low.

Excessive duct losses.

Check nozzle. If problem is not caused by air ow problems, use larger

nozzle, if permitted by rating plate.

Check blower fan motor amperage draw.
Check motor ventilation ports, clean if necessary. Replace motor if
necessary.

Check burner motor. Replace if necessary.

Check all dampers. Open closed dampers including registers in unused
rooms.
Check system temperature rise. If temperature rise is too high, speed up
blower fan.

Check supply air ductwork. Seal leaky joints and seams. Insulate ductwork
if necessary.

Increase "fan on” dipswitch settings on EFT if control has this option.

Register air deectors may help.

Check supply air ductwork. Seal leaky joints and seams. Insulate ductwork
if necessary.

26

P/N 30149, Rev. G [12/15/2016]

APPENDIX D - HOMEOWNER’S REFERENCE TABLE

Model No.

Serial No.

Date Installed

Contractor

Contact

Address

Postal Code

Telephone No.

After Hours No.

Fuel Supplier

Fuel Oil Supplier

Contact

Telephone No.

After Hours No.

27

P/N 30149, Rev. G [12/15/2016]

PARTS LISTING

Parts Listing: Chimney Vent Models BML80(B2,BRF2) and BMLV80(B2,BRF2)

Ref. No. Description Part No.

1 Left Side Panel Assembly 29631AD

2 Right Side Panel Assembly 29630AD
3 Rear Panel 29638AD

4 Blower Division Assembly 29676
5 Base Panel Assembly 28459

6 Inner Front Panel 30154
7 Blower Access Panel 27367AD

Front Door Panel 30157AD

8

9 Top Front Panel 26017AD

10 Heat Exchanger Assembly 550001635

11 Firepot Bracket Assembly 27068
12 Replacement Combustion Chamber 27000WP
13 Bafe 30152

14

15 Pouch Gasket 2080175

16

17 Flue Pipe Collar 27476
18 Air Filter - 20 x 20 x 1 (Permanent) 2180032
19 Control Panel 30010
20 Control Panel Cover 29654

21

22 Wire Harness Fan Timer Board Chimney Vent 29364

23 Wire Harness Transformer and Supply 29751

24

25 Transformer, 120/24V, 40a 240005330
26 Limit Control 60T11 (L260°F) BOF (Black Oxide Finish) 30153
27 Draft Regulator 27494

28

Logo Bezel 28479
Logo Label 28563

Clean-out Gasket Retainer (2 per unit) 29161
Clean-out Gasket (2 per unit) 29163

Oil Burner Mounting Plate Assembly

Oil Burner Mounting Plate
Sight Glass Cover Plate
Sight Glass Gasket (2 per unit)
Sight Glass

Wire Harness Blower Motor Direct Drive 29690
Wire Harness Blower Motor Belt Drive 29691

Fan Timer Control 1158-120 UTEC

Fan Timer Control 1168-1 ECM UTEC 240007048

Beckett AF Oil Burner Assembly, Beckett AF76BNHS 30067

Burner Motor 1/7 HP 3450 RPM PSC 29689

Oil Pump, Clean-Cut A2EA6520 29688
Solid State Ignitor 29522

Oil Primary Combustion Control 7505P1515 240008818
Flame Retention Head 1050002

Low Fire Kit 29880
Low Firing Rate Bafe 25521101

Oil Burner, Riello 40F3 29568

109007674
109007675
29850
29870
29876

29388

28

P/N 30149, Rev. G [12/15/2016]

PARTS LISTING

Parts Listing: Chimney Vent Models BML80(B2,BRF2) and BMLV80(B2,BRF2)

Ref. No. Description Part No.

Blower Assembly, Complete, Direct Drive, 1/2 HP, 4-Speed 29668

Blower Assembly, Complete, Direct Drive, 1/2 HP, ECM 109007377

Blower Housing and Wheel, 100-10T Direct Drive 30626

Blower Motor, ½ HP, 4-Speed 102000131

Blower Motor ½ HP ECM Programmed 109007380

Motor Mounting Band – TR6884B 17811

Motor Mount Arms – 10-10 DD Blower (3 per unit) 26251

Motor Run Capacitor, 10 mfd @ 370 VAC 27743

Capacitor Strap 27760

29

30 Insulation/Limit Disc Retainer 20602

31

32 Filter Side Rail (2 per unit) 27370

33 Filter Blower Division Rail 27369

35 Wire Harness ECM Motor Control (from Fan Timer) 240007276

36 Wire Harness ECM Motor Control (from Motor) 240007272

* Wire Harness ECM Motor Power 240007273

37 Flue Pipe 3002356

* Flue Pipe Insulator 29713

* Flue Pipe Gasket 21994

* Blocked Vent Safety Switch Kit Complete 30690

* Blocked Vent Safety Switch - Replacement Switch Only 30660

* Flue Pipe for Blocked Vent Safety Switch 30655

* Door Handle (2 per unit) 28673

Blower Base ( 2 per unit) 109005826

Grommet, Blower Feet (4 per Unit) 26415

Blower Assembly Complete, Belt Drive, 1/2 HP, One Speed 109006191

Blower Housing and Wheel, 100-10T Belt Drive 30627

Blower Motor, 1/2 HP, One Speed 102000154

Motor Pulley, 3-1/4" x 1/2" 2240001

Blower Pulley, 7" x 3/4" 2240008

Belt, 4L380 2240017

Blower Base (2 per unit) 109005826

Grommet, Blower Feet (4 per unit) 26415

Radiator Clean-out Pipe Cover (2 per unit) 240007841

Radiator Clean-out Cap Gasket (2 per unit) 240006333

29

P/N 30149, Rev. G [12/15/2016]

PARTS LISTING

Parts Listing: Direct Vent Models BML80(BB2U2,BRBU2) and BMLV80(BB2U2,BRBU2)

Ref. No. Description Part No.

All parts are the same as listed on previous pages for chimney vent Model BML-80B and BMLV-

15 Pouch Gasket (Second gasket required for Direct Vent) 2080175

22

28

34 Appliance Vent Adapter 5" x 3" 240006904

* Pressure Switch -0.28" WC 30700

* 10 Second Bypass Timer GPS00C9X10 (Use with Beckett AFII) 30699

* 25 Second Bypass Timer GPS00C9X25 (Use with Riello 40BF3) 240005182

Wire Harness Fan Timer Board Direct Vent 30745

Beckett Oil Burner AFII 85 30069

Burner Motor 1/7 HP 3450 RPM PSC 28907

Beckett Clean-cut Oil Pump A2EA6520 29688

Solid State Ignitor 28558

Oil Primary Combustion Control 7505P1530

Air Tube Combination FBX80HGXS 28561

Flame Retention Head (FB3) 28533

Riello Oil Burner 40BF3 30427

80B except where noted below.

30

P/N 30149, Rev. G [12/15/2016]

Model BML and BMLV Diagram

Direct Drive Model Shown

37

31

P/N 30149, Rev. G [12/15/2016]

ECR International

2210 Dwyer Avenue, Utica NY 13501

web site: www.ecrinternational.com

P/N 30149, Rev. G [12/15/2016]