background image

151B0801 R5 3/28/2006

 

10

Fig. 5: Checking Over-Fire Draft. 

 

SMOKE TEST NOTE

If oily or yellow smoke spots are found 
on the smoke test filter paper, it is 
usually a sign of unburned fuel. This 
indicates poor combustion. This type of 
problem may be caused by excess draft, 
excess air, or contaminated fuel. Do not 
ignore this indicator. 

STACK TEMPERATURE:

 

Stack temperature will vary depending 
on fuel input, circulating air blower 
speed, and burner set up, etc. In 
general, stack temperature should 
typically range between 380°F to 550°F, 
assuming that the combustion air is 
approximately room temperature (65°F - 
70°F). In general, lower stack 
temperature indicates greater efficiency; 
however, excessively low stack 
temperature can lead to condensation 
forming in the chimney and / or venting. 
Sulphur and similar contaminants in the 
fuel oil will mix with condensation to form 
acids. Acids and resultant chemical salts 
will cause rapid deterioration of the 
chimney and venting components, and 
may attack the furnace. 

If the flue gases are below the range, it 
may be necessary to slow down the 
blower fan. If the flue gases are above 
the range, the blower fan may require 
speeding up. Stack temperature varies 
directly with the system temperature rise. 
System temperature rise is the difference 
between the furnace outlet temperature 
and furnace inlet temperature as 
measured in the vicinity of the 
connection between the plenum take-offs 
and the trunk ducts. Refer to the 

appliance rating plate of model for 
temperature rise range. 

If the venting from the furnace to the 
chimney is long, or exposed to cold 
ambient temperatures, it may be 
necessary to use L-Vent as the vent 
connector to reduce stack temperature 
loss to prevent condensation. The 
venting should be inspected annually to 
ensure that it is intact. 

FURNACE INSTALLATION SET-UP 

The furnace must be set up as the final 
step in the installation.  

A)  The oil burner must be set up 
following the procedures outlined above. 

B)  The appliance rating plate should be 
consulted for model temperature rise 
ranges. To determine the temperature 
rise, measure the supply air and return 
air temperatures when the furnace has 
reached steady state conditions. This is 
the point at which the supply air 
temperature stops increasing relative to 
the return air temperature. The furnace 
may have to run 10 to 15 minutes to 
reach steady state conditions. The 
measurements may be made with duct 
thermometers or thermocouples used in 
conjunction with multi-meters with 
temperature measurement capabilities.  

The return air should be measured at a 
point where the thermometer will be well 
within the air stream near the furnace 
return air inlet. Actual location is not 
particularly critical; however, avoid 
locations where the temperature 
readings could be affected by humidifier 
bypass ducts, the inside radius of 
elbows, etc. 

The supply air temperature should be 
measured at a point where the 
thermometer will be well within the air 
stream near the furnace supply air outlet. 
Usually, the side mid-point of the supply 
air plenum take-off is ideal, providing it is 
out of the line of sight to the heat 
exchanger. If the thermometer is within 
the line of sight of the heat exchanger, 
the supply air readings may be skewed 
by radiant heat from the heat exchanger. 
If the plenum take-off is unsuitable, the 
supply air temperature may be measured 
within the first 18 inches of the first 
segment of supply air trunk duct. 

If the temperature rise is outside the 
recommended range, it may be adjusted 
on direct drive equipped units by 
selecting alternate circulation fan motor 
speeds. If the temperature rise is too 
high, speed the fan up. If the 

temperature rise is too low, slow the fan 
down. 

C) Keep in mind that the stack 
temperature varies directly with the 
temperature rise. The higher the 
temperature rise, the higher the stack 
temperature will be, resulting in lower 
efficiency. The lower the temperature 
rise, the lower the stack temperature will 
be, which, in some cases, may allow 
condensation to form in the chimney and 
other vent parts. 

D)  Test the high limit control to ensure 
that it is operating correctly. This may be 
done by temporarily removing the 
circulator fan heating wire or neutral 
wire. Turn of electrical power to the 
furnace before working with the motor 
wires. Be sure to protect any removed 
wires from shorting out on metal furnace 
parts. If the high limit test is successful, 
shut off the electrical power to the 
furnace, restore the proper motor wiring. 
Finally, restore power to the furnace. 

E) Operate the furnace through a 
minimum of three full heating cycles. 
During this time, check for fuel oil leaks, 
gross air leakage from the supply air 
ductwork, unusual noises originating 
anywhere within the heating system 
which may cause some concern or 
annoyance to the home owner, etc.  

F)  Be sure that the homeowner is 
familiar with the furnace. The 
homeowner should be aware of the 
location of electrical circuit breaker or 
fuse, the location of any electrical 
switches controlling the furnace, the 
location of the oil tank shut-off valve and 
how to operate the valve. The 
homeowner should be informed where 
the oil tank gauge is located and how to 
read it. 

It would be beneficial to review safety 
issues with the home owner, such as the 
danger of storing combustibles too close 
to the furnace, hanging anything on the 
furnace vent pipe, and especially the 
dangers of indiscriminately pressing the 
burner reset button. 

IMPORTANT

: Be sure that the home 

owner knows where the burner reset 
switch is located, and is aware that the 
reset switch is not to be activated more 
than once without a thorough look for the 
cause of the problem, (lack of fuel, etc.). 
Be sure that the homeowner knows 
when to quit trying to start the furnace 
during these conditions and who to call 
for emergency service. 

Summary of Contents for O4HD-091A-12-FA

Page 1: ...WER ECM 8 FURNACE CONTROLS 9 OIL BURNER 9 FURNACE INSTALLATION SET UP 11 MAINTENANCE AND SERVICE 12 OPERATING INSTRUCTIONS 12 TABLE A 1 BECKETT OIL BURNER SET UP 13 TABLE A 2 DIRECT DRIVE BLOWER SET U...

Page 2: ...f Oil Burning Equipment as well as in accordance with local codes In Canada the installation of the furnace and related equipment shall be installed in accordance with the regulations of CAN CSA B139...

Page 3: ...able 1 Installation on a combustible floor requires a clearance of 1 inch Using a noncombustible material such as one inch thick channel iron or similar material can do this The furnace must be suppor...

Page 4: ...VRV INCLUDED IN THIS KIT MUST BE USED IN CONJUNCTION WITH THE FURNACE BOOT CHIMNEY VENTING The chimney must be sized correctly and be in good repair If the chimney is oversized there is a high risk o...

Page 5: ...on extension cord Change to straight or to long offset I Two or more openings to the same chimney Found by inspection from basement The least important opening must be closed using some other chimney...

Page 6: ...urnace may be installed with a one pipe system with gravity feed or lift The maximum allowable lift on a single line system is 8 feet Lift should be measured from the bottom outlet of the tank to the...

Page 7: ...tory is fed into pre programmed algorithms in the microprocessor to determine the correct motor output required to maintain constant airflow regardless of external static pressure The microprocessor a...

Page 8: ...ng the dipswitch combination displayed in Table 5 This fan on delay can be set at 30 60 90 or 120 seconds This provides a delay between the burner ignition and blower start up to eliminate excessive f...

Page 9: ...efficiency PREPARATIONS Drill a test port in the venting ideally at least 2 flue pipe diameters away from the furnace breeching if venting horizontally from the furnace or from the flue pipe elbow if...

Page 10: ...s ducts the inside radius of elbows etc The supply air temperature should be measured at a point where the thermometer will be well within the air stream near the furnace supply air outlet Usually the...

Page 11: ...tele spout oiler This oiler has a long flexible plastic spout DO NOT OVER LUBRICATE Excess oil may result in premature electric motor failure Inspect the blower fan Clean it if necessary Oil Burner Ma...

Page 12: ...f air passing through the oil burner combustion chamber breeching etc up the chimney between burner cycles NOTE THE USE OF THIS CONTROL CAN OCCASIONALLY CAUSE POST COMBUSTION NOZZLE DRIP TABLE A 2 DIR...

Page 13: ...w 1622 1602 1541 1499 1433 0 1 1 1215 1214 1214 1207 1204 1 0 0 1128 1108 1101 1095 1089 1 0 1 988 987 981 978 938 O4HD 091A V F 11 10 DD 9 6 50 80 F 0 0 0 788 787 781 777 756 1 1 0 1800 1800 1800 180...

Page 14: ...ir Width A Depth B Height C D x E Side F x G Bottom Dia Height H Filter Perm Ship Weight lb O4HD 091A 22 31 50 1 2 20 1 2 x 20 14 x 22 14 x 22 5 42 16 x 25 x 1 190 O4HD 140A 22 31 58 1 8 20 1 2 x 20 1...

Page 15: ...151B0801 R5 3 28 2006 15 APPENDIX A WIRING DIAGRAM O4HD 091A 12 FA and O4HD 140A 16 FA...

Page 16: ...151B0801 R5 3 28 2006 16 APPENDIX B WIRING DIAGRAM O4HD 091A V F and O4HD 140A V F...

Page 17: ...JURY PROPERTY DAMAGE OR DEATH ACCESSORIES The EFTB has provisions for supplying 115 volt power to an electronic air cleaner EAC as well as 115 volts to a line voltage humidifier or humidifier step dow...

Page 18: ...park for 10 sec a Provides continuous spark after flame is sensed to assure that burner remains lit b Turns on LED diagnostic light c Starts carryover timer i Flame and call for heat are monitored If...

Page 19: ...noid Valve LED Diagnostic Light RETURNS TO IDLE STATE FLAME FLAME FLAME FLAME NO FLAME NO FLAME FLAME LOST FLAME LOST REMAINS IN IDLE STATE R7184 SEQUENCE OF OPERATION LOCKOUT STATE R7184 Shuts off bu...

Page 20: ...0 seconds b Burner motor is de energized Even though thermostat is still calling for heat c If circulator fan has started it continues through the selected heat fan off delay period Established flame...

Page 21: ...t existing call for heat a Circulator fan turns off when heat fan off delay time is complete b Normal operation resumes electronic fan timer control is in standby mode awaiting next thermostat command...

Page 22: ...shooting IMPORTANT Due to the potential hazard of line voltage only a trained experienced service technician should perform the troubleshooting procedure PRELIMINARY STEPS Check the diagnostic light f...

Page 23: ...ce the R7184 control If the indicator light turns off replace cad cell bracket assembly Burner starts Trouble is in thermostat circuit Check thermostat wiring connections If connections are clean and...

Page 24: ...Step 7 6 Reset oil primary control by pushing in and releasing red reset button Indicator light continues to flash at 1 Hz rate Verify that the control is not in restricted mode See notes at end of th...

Page 25: ...each time a call for heat is successfully completed To reset from RESTRICTED MODE press and hold the reset button for 30 seconds When the LED flashes twice the device has reset NOTE Disable function P...

Page 26: ...ht a maximum of 1500 in the presence of light Ensure that room light is not leaking into the cad cell compartment See diagnostic light section No fuel oil Check fuel oil supply Check that all hand ope...

Page 27: ...r radiator Poor alignment between oil burner blast tube and fire pot Check alignment Blast tube should be centered with fire pot burner opening Oil burner head should be inch back from the inside surf...

Page 28: ...re rise Slow down blower fan if necessary Supply air temperature too cool Excessive duct losses Check supply air ductwork Seal leaky joints and seams Insulate ductwork if necessary Fan control fan on...

Page 29: ...151B0801 R5 3 28 2006 29 PARTS...

Page 30: ...Filter 16 x 25 x 1 Permanent 2180023 23 Filter Frame End Support 5592B2 24 Junction Box 28723 25 Junction Box Cover 28722 26 Blower Assembly Complete Direct Drive 3 4 hp ECM O4HD 091A V F 30381 26a Bl...

Page 31: ...unit 29161 20 Clean out Cover 2 per unit 29162 21 Filter Frame 16 x 25 x 1 18020 22 Filter Frame End Support 5592B2 23 Air Filter 16 x 25 x 1 Permanent 2180023 24 Junction Box 28723 25 Junction Box Co...

Page 32: ...e Installed Contractor Contact Address Postal Code Telephone No After Hours No Service Contractor if different from Installation Contractor Service Tech Telephone No After Hours No Fuel Supplier Oil S...

Reviews: