10.11
DIP SWITCH
The integrated furnace control MAY not recognize switch
setting changes while energized.
DIP switches are ignored on communicating system, ex-
cept for test mode.
10.11.1
Heat adjust
DIP switch bank S1 is used to fine-tune the airflow in the
heating mode. The switches of bank S1 can be set to
adjust either the minimum heat rate airflow or the maxi-
mum heat rate airflow or both. Also, every firing rate in
between these points will be adjusted accordingly.
NOTE:
All DIP switches on S1 will be shipped in the “OFF”
position. See Table 9.
10.11.2
Cooling airflow select
These DIP switches are used to select the appropriate
cooling airflow based on the amount required. The switch
settings do not affect cooling airflow when installed in fully
communicating system. In that case, the condenser sup-
plies the information for cooling airflow which is pre-set at
the factory and not adjustable.
The target cooling airflow will be determined by the ad-
justments of S3-1 and S3-2. Furnaces with ½ HP motors
will have a maximum target airflow setting of 1200 CFM.
Furnace with 1 HP motors will have a maximum target
airflow setting of 1800 CFM. The airflow achieved may
be less than the target depending of the static pressure
in the supply air duct.
The adjustment of the cooling can also be made with S3-
3 and S3-4. Those switches will increase of decrease
CFM by 10%. See table 10 for target CFM and table 11
for CFM adjust.
10.11.3
Heat rise adjust
S4-1 HEAT RISE ADJUST – This DIP switch is used to
select desired temperature rise in the heating mode.
“OFF” will yield the maximum heat rise. (Target heat rise
is 55°F)
“ON” will increase the airflow to yield the minimum heat
rise.
Refer to table 12.
10.11.4
Continuous fan speed
S4-4 FAN SPEED SELECT – This DIP switch is used to
select the continuous fan speed.
This switch is ignored
on a communicating system.
Refer to table 12
10.11.5
Furnace test mode
S4-2 and S4-3 - The Test Switches will place the furnace
into a test mode, operating the furnace at continuous in-
put rates of either 100% of full rate (maximum fire) or
40% of full rate (minimum fire). This is accomplished by
setting the Test Switches. See table 12.
To enter the furnace test mode, proceed as follows:
1. Switch the 120 volt power to the furnace OFF. Do
not change settings with control energized.
2. Position Test Switches for the desired test mode.
3. Switch the 120 volt power to the furnace ON.
4. Set the thermostat mode to HEAT; adjust the set
point at least 4°F above room temperature to de-
mand a call for heating.
The furnace will operate at the fixed test mode until on e
of the following conditions :
• The thermostat is satisfied and the call for heat is
removed.
• The furnace has been in test mode continuously
for sixty minutes, at which time the furnace control
will exit the test mode and proceed to normal heat-
ing operation as configured. Test mode cannot be
activated again unless line voltage power to the fur-
nace is cycled off and back on. This is true even if
the DIP switches remain configured to the test set-
tings
37
Summary of Contents for Chinook C105-M-V
Page 24: ...Figure 10 Typical gas pipe arrangement 23...
Page 27: ...Figure 11 Wiring Diagram 26...
Page 39: ...Figure 14 Wiring Diagram Modulating t stat 38...
Page 53: ...Table 17 CFM 52...
Page 54: ...Figure 15 Dimensional Drawing 53...
Page 55: ...14 PART LIST 54...
Page 56: ...Figure 16 Exploded view 1 55...
Page 57: ...Figure 17 Exploded view 2 56...
Page 59: ...Table 19 Parts list continued 58...
Page 60: ...Table 20 Parts list MS 59...
