24
See Blower Performance Data section.
Airflow Selection DIP Switches (SW1)
Microprocessor Control cont.
Override Selection DIP Switches
Override Time
SW3-4
SW3-5
5 minutes
On
On
10 minutes
Off
On
30 minutes
On
Off
60 minutes
Off
Off
Factory Setup DIP Switches (SW2)
DIP Switch
Number
Description
OFF Position
ON Position
SW2-
1
Service Test Mode
Allows field selection of “NORMAL” or “TEST” operational modes. Test mode accelerates
most timing functions 16 times to allow faster troubleshooting. Test mode also allows
viewing the “CURRENT” status of the fault inputs on the LED display.
Test Mode
Normal Speed
Operation
SW2-
2
Freeze Detection Limit
Allows field selection of freeze detection thermistor fault sensing for well water (30°F) or
antifreeze protected (15°F) earth loops.
Low Loop Water
Temperature
Sensing Set at 15°F
Low Well Water
Temperature
Sensing Set at 30°F
SW2-
3
Forced Air Heating/Hydronic Heating
This switch allows field selection of “Heating Forced Air Priority” or “Hydronic Priority”.
Forced Air Heating
Priority
Hydronic Heating
Priority
SW2-
4
Forced Air Cooling/Hydronic Heating
This switch allows field selection of “Cooling Forced Air Priority” or “Hydronic Priority”.
Forced Air Cooling
Priority
Hydronic Heating
Priority
SW2-
5
Not Used
Not Applicable
Not Applicable
SW2-
6
Diagnostics Inputs
Allows viewing the inputs from the thermostat to the control board such as Y1, Y2, O, G, W,
HW, SL1-In, on the LED display..
Inputs
Normal
SW2-
7
Diagnostics Outputs
Allows viewing the outputs from the control board such as compressor, diverting valve,
reversing valve, blower, hot water pump and loop pump on the LED display.
Outputs
Normal
SW2-
8
Thermostat Selection
Configures the control for a pulsed lockout signal (ComforTalk and FaultFlash thermostats)
or continuous lockout signal (standard thermostat).
Pulse “L” Signal
Continuous “L”
Signal
Factory Setup DIP Switches (SW3)
DIP Switch
Number
Description
OFF Position
ON Position
SW3-
1
Dual Capacity/Single Speed
Configures the control for single speed compressor operation or dual capacity operation.
Dual Capacity
Operation
Single Speed
Operation
SW3-
2
POPC/Spring
This switch allows field selection of “Power Open, Power Closed” dampers or “Power Open,
Spring Close” dampers.
Power Open, Power
Close
Power Open,
Spring Close
SW3-
3
No RPM/RPM
Configures the control to monitor the RPM output of an ECM blower motor. This product
must have the control configured for “NO RPM” sensing.
ECM Blower/RPM
Monitoring Disable
Not Used
SW3-
4
Override Time
Configures the control override timings when switching from forced air mode to hydronic
mode or vice versa.
See Override
Selection table
below for timings
See Override
Selection table
below for timings
SW3-
5
Override Time
Configures the control override timings when switching from forced air mode to hydronic
mode or vice versa.
See Override
Selection table
below for timings
See Override
Selection table
below for timings
LED Status Board DIP Switches (SW4)
DIP Switch
Number
Description
OFF Position
ON Position
SW4-
1
Hydronic Mode
Enables and disables hydronic heating mode.
Hydronic Heating
Disabled
Hydronic Heating
Enabled
AFFINITY COMBINATION INSTALLATION MANUAL
Summary of Contents for YACT038-072
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