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PART 2 

OPERATION 

 

 

2.1) SEQUENCE 

OF 

OPERATION 

 

10 

 

2.1.1) Sequence 

of 

operation 

Beckett AFG, Riello 40-F and Aero F-FAC 

 

1.  Normally open contact (T-T) on primary relay closed when 

thermostat calls for heat; 

2. 

AFG and F-FAC burner: The motor starts and spark is 
established. The pump pressure builds and the oil supply 
mechanism opens, admitting fuel to the nozzle; 

3. 

R40-F Burner: The 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; 

4. 

Spark ignites oil droplets; 

5.  Cad cell senses flame and burner continues to fire. Ignition 

transformer ceases sparking (Riello R40-F); 

6.  After Fan-Limit control heats up to the factory set point, the 

circulating air blower and electronic air cleaner start; 

7.  The circulating air blower and burner motor remain on until the 

thermostat is satisfied. The ignition transformer continues to 
spark (AFG). The solenoid valve remains open (R40-F); 

Thermostat is satisfied: 
8.  Primary relay contacts open, solenoid valve closes (R40-F), 

burner fan motor shuts down. The ignition transformer ceases 
sparking (AFG); 

9. 

The Fan-Limit control bi-metal cools down to the factory set point 
of 32°C (90°F), the circulating air blower and the electronic air 
cleaner turn off. 

 

2.2) 

CHECKS AND ADJUSTMENTS 

 

2.2.1) General 

 

After initial installation and subsequent yearly maintenance calls, the 
furnace must be thoroughly tested.  
 

IMPORTANT 

The burner must be functioning for at least 10 minutes 
before any test readings are taken. Adjustments are to 
be made according to the Technical Specifications in 
this manual. 

 
Open the oil bleed port screw and start the burner. Allow the oil to 
drain into a container for at least 10 seconds. Once the oil flows 
absolutely free of white streaks or air bubbles to indicate that no air is 
being drawn into the suction side of the oil piping and pump, slowly 
close and tighten the bleed screw. The burner should now fire. Adjust 
the oil pressure as indicated in the Technical Specification Tables 3.1 
to 3.4, p. 15 to 18. 
 
 

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) BVSO 

Performance 

Test 

 

The purpose of the following test is to check that the electrical outlet 
on the furnace, designated to the BVSO, is functional. 

 

1. 

Start up the burner; 

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

furnace; 

3. 

The burner must shut-off immediately, while the blower continues 
to run to the end of the cool-down cycle. 

 

If the test is not in line with the above,

 

CALL A QUALIFIED SERVICE 

TECHNICIAN. 

 

2.2.4) Combustion 

chamber 

curing 

 

Some moisture and binders remain in the ceramic combustion 
chamber after manufacture. It is important to clear the chamber of this 
residue before testing. If you smoke test before curing, the instrument 
may become damaged. To cure the chamber, run the unit for 3 
consecutive cycles, with 3 minutes of elapsed time in between each 
cycle. Each burn cycle should least 3 minutes. The exhaust will have a 
pungent odour and produce a white cloud of steam. 
 

2.2.5)  Smoke / CO

2

 test 

 

1.  Pierce a test hole in the smoke pipe near the furnace breech.  

Insert the smoke test instrument probe into the open 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 CO

2

 sample at the same test location where the smoke 

sample was taken. Note the CO

2

 reading associated with the #1 

smoke condition; 

4.  Adjust the burner air setting to obtain a CO

2

 reading 1% lower 

than the reading associated with the #1 smoke; 

5.  This method of adjusting the CO

2

 will allow adequate excess air 

to ensure that the burner will burn clean for the entire heating 
season. 

 

2.2.6)  Supply air temperature rise test 

 

1. 

Operate the burner for at least 10 minutes; 

2. 

Measure the air temperature in the return air plenum; 

3.  Measure the air temperature 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 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 

Tables 3.1 to 3.4, p. 15 to 18, 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, overfiring caused by excessive pump 
pressure, or improper nozzle sizing. 

 
 

445 01 4054 06

Summary of Contents for FLO115DABR-C

Page 1: ...5DABR D OLF140C12C OLR182A16C D N S 0 5 9 4 R v A D N S 0 6 6 5 R v A D N S 0 5 7 5 R v A Manufactured by UTC Canada Corporation ICP Division 3400 Industrial Boulevard Sherbrooke Quebec Canada J1L 1V8...

Page 2: ...ician 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 death and or personal i...

Page 3: ...mber Normal servicing of this unit does not require cleaning of the combustion chamber Use extreme care if for any reason you have to work in the area of the combustion chamber 1 2 2 Freezing temperat...

Page 4: ...r size and adequate chimney base temperature as specified in the Installation Code The relevant excerpt from the code is found in this section Use it as a guide when local or national codes do not exi...

Page 5: ...o provide adequate combustion and ventilation air can result in death and or personal injury 1 5 1 General Oil furnaces must have an adequate supply of combustion air It is common practice to assume t...

Page 6: ...vinyl vapour barrier CAUTION The CAS 2B does not turn the furnace installation into a direct vent system Therefore the building structure must provide for adequate combustion air to be delivered to t...

Page 7: ...heat exchanger warranty 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...

Page 8: ...here the furnace is located Install the air conditioning cooling coil evaporator downstream from the supply air plenum of the furnace If a separate evaporator and blower unit is used install appropria...

Page 9: ...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 c...

Page 10: ...nd blower regulator Modification of the FAN ON and HI Limit settings on the Fan Limit and blower regulator can cause a malfunction of the furnace and carry to premature wear of the heat exchanger CAUT...

Page 11: ...inder 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 repla...

Page 12: ...ntion head 3 1 5 Nozzle Replace the nozzle with the one specified in Tables 3 1 to 3 4 p 15 to 18 3 1 6 Oil filter Tank filter The tank filter should be replaced as required Secondary filter The 10 mi...

Page 13: ...e Day Night Dealer name and address START UP TEST RESULTS Nozzle Pressure Lb psi Burner adjustments Primary air Fine air Draw Assembly CO2 Smoke scale Bacharach Gross stack temperature F Ambient tempe...

Page 14: ...5 1 2 75 2 3 75 AERO BURNER 1725 RPM Nozzle 100 PSIG pump pressure Delavan 0 65 70W 0 75 70W 0 85 70W Volts Hertz Phase Operating voltage range Rated voltage Amps Minimum ampacity for wiring sizing Ma...

Page 15: ...Nozzle Delavan 060 60W 075 60W 0 85 60W 0 85 60W Pump pressure PSIG 155 130 140 170 Combustion air adjustment turbulator damper 2 3 25 2 5 4 2 2 5 3 2 5 AERO BURNER 1725 RPM Nozzle 100 PSIG pump press...

Page 16: ...6 6 RIELLO BURNER MODEL 40 Nozzle Delavan 0 85 60W 0 85 60W 1 00 60W 1 10 60W Pump pressure PSIG 140 170 145 140 Combustion air adjustment turbulator damper 2 5 2 5 3 2 75 3 3 3 5 3 25 AERO BURNER 172...

Page 17: ...er 1 5 2 75 2 5 3 25 3 4 25 AERO BURNER 1725 RPM Nozzle 100 PSIG pump pressure Delavan 0 75 70W 0 85 70W 1 00 70W ELECTRICAL SYSTEM Volts Hertz Phase Operating voltage range Rated voltage Amps Minimum...

Page 18: ...19 DNS 0596 Rev D FIGURE 4 2 Model MBOV115DABR D FIGURE 4 1 Model MBO115DABR D DNS 0590 Rev D 445 01 4054 06...

Page 19: ...20 FIGURE 4 3 Models LBO125DABR13 D LBO145DABR34 D OLR182A16C FIGURE 4 4 Model FLO115DABR C OLF140C12C DNS 0666 Rev C DNS 0576 Rev F 445 01 4054 06...

Page 20: ...21 FIGURE 5 Wiring diagram MBO115DABR D MBOV115DABR D LBO125DABR13 D LBO145DABR34 D OLR182A16C FLO115DABR C OLF140C12C DNS 1014 Rev A 445 01 4054 06...

Page 21: ...22 PARTS LIST Model MBO115DABR D B50040B 445 01 4054 06...

Page 22: ...B40492 Top rear panel 30 B40032 Gasket smoke outlet 31 B40046 Smoke outlet assembly 32 B40054 01 Baffle assembly 5 required 33 B40043 Plenum divider 34 B40076 Top division panel 35 B40410 Filter rack...

Page 23: ...PARTS LIST Model MBOV115DABR D B50041B 445 01 4054 06...

Page 24: ...ntral support rear baffle and item 32 included 32 B01291 02 Seal strip 3 required 33 B40131 02 Left side panel assembly Item 34 included 34 B40125 02 Left side panel insulation 35 L04G005 Bushing 1 3...

Page 25: ...26 PARTS LIST Model LBO125DABR13 D B50038C 445 01 4054 06...

Page 26: ...32 B40032 Gasket smoke outlet 33 B40046 Smoke outlet assembly 34 B40071 Inlet baffle 2 required 35 B40043 Plenum divider 36 B40054 01 Baffle assembly 5 required 37 B40108 Division panel assembly Centr...

Page 27: ...PARTS LIST Models LBO145DABR34 D OLR182A16C B50039F 445 01 4054 06...

Page 28: ...B40107 01 Blower door assembly Item 29 included 29 Z99F050 Door handle 30 B40497 Top rear panel 31 B40031 Gasket smoke outlet 32 B40047 Smoke outlet 33 B40054 02 Baffle assembly 7 required 34 B40043...

Page 29: ...PARTS LIST Model FLO115DABR C OLF140C12C B50042A 445 01 4054 06...

Page 30: ...rack 29 Z04F004 Paper filter 20 x 20 x 1 1 required 30 B40381 Blower door assembly Item 31 included 31 Z99F050 Acces door 32 B40356 Top back panel assembly 33 Z04F001 Paper filter 10 x 20 x 1 1 requir...

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