York YACT038-072 Installation Manual page 24

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