ECR International BCL, Installation, Operation And Maintenance Manual

28141 Rev A 10-27-06 

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furnace and should not interfere with the 
combustion air supplied to the burner. The control 
should also be located near the furnace flue outlet 
and installed according to the instructions 
supplied with the regulator. The over fire draft 
should be set to -0.02 in. w.c. 

8.  OPTIONAL SIDEWALL VENTING 

BFL and BCL Model furnaces designated with a 
"U" are Sidewall Vent units and shall be installed 
with sidewall venting components provided. 
Please refer to the Direct Sidewall Vent 
Instructions, Part No. 28888, included with the 
appropriate Vent Kit for details. Through the wall, 
(Sidewall Venting or Direct Sidewall Venting) 
requires the use of specific oil burners; the 
Beckett AFII, or the Riello BF series. Please refer 
to Appendix A, Tables A2, and A6. 
Note: Sidewall venting requires special attention 
to combustion air supply. There is no natural draft 
in the venting system between furnace cycles; 
therefore, if the indoor pressure is negative 
relative to the outdoors, the vent terminal 
becomes a point of infiltration. This could lead to 
oil odour control problems. This may be rectified 
by the use of ducted outdoor air for combustion 
(sealed combustion), using the Beckett AFII or 
Riello BF Series oil burner. 
BCL-80S through BCL-145S and BFL-80 through 
BFL-145 are approved for use with the Field 
Controls Co. Models SWGII-5 and PVE-5 power 
venters. This venting option is not recommended 
as an equal alternative to chimney venting 
because the outlet terminal becomes a major 
point of infiltration between furnace cycles, 
occasionally resulting in oil odour control 
problems. The SWG and PVE power venter kits 
are available through major HVAC supply 
companies. SWG and PVE technical support is 
offered by their manufacturer; not by ECR 
International Ltd. - Olsen Division  

9.  FAN AND LIMIT CONTROL 

The 

L6064A

 temperature sensitive fan switch is 

actuated by a helical bi-metal sensing element 
enclosed in a metal guard, and controls the 
circulating air blower. This provides a delay 
between the burner ignition and blower start up to 
eliminate excessive flow of cold air when the 
blower comes on. Blower shutdown is also 
delayed to remove any residual heat from the 
heat exchanger and improve the annual efficiency 
of the furnace. Fan on settings of 110º F to 130º F 

(43º C to 55º C) and fan off settings of 90º F to 
100º F (32º C to 37ºC) will usually be satisfactory. 
The 

L4064W

 temperature sensitive fan switch 

contains a heater-wrapped bi-metal to actuate the 
fan switch independent of the temperature at the 
helical sensing element. The time from ignition, to 
the blower on function is approximately 30 
seconds. If after 1 minute, the blower has not 
come on, replacement of the control may be 
necessary. The blower shutdown is the same as 
noted for the L6064A control. 
The limit switch performs a safety function and 
breaks power to the oil burner primary control, 
which shuts off the burner if the furnace over-
heats. The limit control is thermally operated and 
automatically resets. The limit control is factory 
installed, pre-set and is not adjustable. 
The limit control and fan control are incorporated 
in the same housing and are operated by the 
same thermal element. 

10.  ELECTRICAL CONNECTIONS 

The furnace is listed by CSA to the North 
American standard. The furnace is factory wired 
and requires minimal field wiring. All field wiring 
should conform to CAN/CSA C22.1 Canadian 
Electrical Code, Part 1, and by local codes, where 
they prevail. In the United States, the wiring must 
be in accordance with the National Fire Protection 
Association NFPA-70, National Electrical Code, 
and with local codes and regulations. 
The furnace should be wired to a separate and 
dedicated circuit in the main electrical panel; 
however, accessory equipment such as electronic 
air cleaners and humidifiers may be included on 
the furnace circuit. Although a suitably located 
circuit breaker can be used as a service switch, a 
separate service switch is advisable. The service 
switch is necessary if reaching the circuit breaker 
involves becoming close to the furnace, or if the 
furnace is located between the circuit breaker and 
the means of entry to the furnace room. The 
furnace switch (service switch) should be clearly 
marked, installed in an easily accessible area 
between the furnace and furnace room entry, and 
be located in such a manner to reduce the 
likelihood that it would be mistaken as a light 
switch or similar device.