8
START UP, ADJUSTMENT
AND SAFETY CHECK
8.1
Starting the furnace
This appliance is equipped with a hot surface ignition device.
This device lights the main burners each time the room
thermostat calls for heat. See the lighting instructions on the
furnace.
During the initial start-up, it is not unusual for odour or smoke to
come out of any room registers. To ensure proper ventilation, it
is recommended to open windows and doors before the initial
firing.
The furnace has a negative pressure switch that is a safety
during a call for heat. The induced draft blower must pull a
negative pressure on the heat exchanger to close the negative
pressure switch. The induced draft blower must maintain the
negative pressure for the furnace to operate. If the induced
draft blower fails to close or maintain the closing of the pressure
switch, an error code would be displayed.
To properly start the furnace:
1. Set the thermostat to it lowest setting and turn off furnace
electrical power.
2. Remove the burner compartment control access door.
3. Make sure that the manual gas control is in the "ON"
position on the gas valve.
4. Replace the burner compartment control access door.
WARNING
Failure to replace the burner door can cause
products of combustion to be released into the
conditioned area resulting in personal injury or
death.
5. Turn on the manual gas stop.
6. Turn on the furnace electrical power.
7. Put thermostat to «Heat» mode and set it at least 10°F
above room temperature.
8. After the burners are lit, set the room thermostat to the
desired temperature.
These furnaces are equipped with a manual reset limit switch in
the burner assembly. This switch opens and shuts off the power
to the gas valve if an overheat condition (flame rollout) occurs.
Correct inadequate combustion-air supply or improper venting
conditions before resetting the switch.
DO NOT jumper this
switch.
Before operating the furnace, check the flame rollout
manual reset switch for continuity. If necessary, press the button
to reset the switch.
8.2
SELECTING THE BLOWER
SPEED
The selection of blower speed can be adjusted using
dipswitches.
Each selection (A,B,C,D) refers to a different
airflow. The ideal airflow in heating and in cooling mode can
be selected independently. Refer to table 11 and 12 for the tap
selection and CFM tables 15 to 20 for airflows.
You also have the ability to increase or decrease airflow by
approximately 15% with the «adjust» dipswitches.
These
setting will be applied to cooling and heating mode. Refer to
table 13.
Table 11 – Cooling tap selection
A
B
C
D
S3-1
OFF
ON
OFF
ON
S3-2
OFF
OFF
ON
ON
Table 12 – Heating tap selection
A
B
C
D
S4-3
OFF
ON
OFF
ON
S4-4
OFF
OFF
ON
ON
Table 13 – Adjust tap selection
NONE
+15%
-15%
NONE
S3-3
OFF
ON
OFF
ON
S3-4
OFF
OFF
ON
ON
Table 14 – CFM C15-2-V - 0381123A
Dipswitch
Max ESP
1st stage
2nd stage
Temp.
Settings
"w.c.
heating
heating
rise °F
S4-3=OFF
A
1.0
235
295
45
S4-4=OFF
S4-3=ON
B
1.0
210
561
50
S4-4=OFF
S4-3=OFF
C
1.0
185
480
55
S4-4=ON
S4-3=ON
D
1.0
170
215
60
S4-4=ON
Dipswitch
Max ESP
1st stage
2nd stage
FAN ON
Settings
"w.c.
cooling
cooling
(G)
S3-1=OFF
A
1.0
800
1 000
440
S3-2=OFF
S3-1=ON
B
1.0
640
800
350
S3-2=OFF
S3-1=OFF
C
1.0
480
600
265
S3-2=ON
S3-1=ON
D
1.0
320
400
175
S3-2=ON
26
Summary of Contents for C105-2-V
Page 24: ...Figure 29 Direct vent clearance 23 ...
Page 25: ...Figure 30 Other than Direct vent clearance 24 ...
Page 32: ...Figure 31 Dimensions 31 ...
Page 33: ...Figure 32 Two Stage ECM Wiring diagram 32 ...
Page 36: ...Figure 33 Exploded view Cxx 2 V part 1 35 ...
