997-060180-4d
OUTDOOR SENSOR
If the system is equipped with an optional outdoor temperature sensor, Bard PN 8403-061(1125-2), it is possible to allow the controller to operate the heat pump system in the most efficient manner possible. By setting the COOLING LOCKOUT, ELECTERIC HEAT LOCKOUT, and the HEAT PUMP LOCKOUT you can avoid running the heat pump when the outdoor temperature is too low to operate efficiently. You can also avoid running the electric heat when the outdoor temperature is high enough to allow the heat pump to maintain a comfortable temperature.
COOLING LOCKOUT is defaulted to NONE which is disabled. Selectable range is from 40˚-55˚ in 5˚ increments.
ELECTRIC HEAT LOCKOUT is defaulted to NONE which is disabled. Selectable range is from 5˚-60˚ in 5˚ increments.
HEAT PUMP LOCKOUT is defaulted to NONE which is disabled. Selectable range is from 5˚-50˚ in 5˚ increments. OPERATION: If compressor is turned off due to outdoor temperature going below set-point while the compressor is operating it will stay off until the room thermostat set-point is reached even if the temperature at the outdoor temperature rises above the outdoor sensor setting. The next operating cycle will be based on what the temperature is at the outdoor sensor at time of call for heating. The OUTDOOR sensor is connected to the OD and GND terminals on the controller, and when connected, the outdoor temperature is automatically displayed on the controller screen.
REMOTE INDOOR SENSOR
Allows selection of the optional remote sensor, Bard PN 8403-062(1125- 50), to determine indoor temperature. (NOTE: If no Remote Indoor Sensor is connected during initial configuration process, the Remote Indoor Sensor selection does not display in the Installer Menu. If a Remote Indoor Sensor is connected at a later date, the controller will recognize the connection, and the selection step will automatically be added to the Installer Menu.) Options are REMOTE SENSOR ONLY, AVERAGE WITH STAT, and NO REMOTE SENSOR. Selecting REMOTE SENSOR ONLY, allows the indoor sensor to take control of temperature sensing(if connected). Selecting AVERAGE WITH STAT, will average the temperature of the on-board sensor to the indoor sensor, and selecting NO REMOTE SENSOR, will use the on-board temperature sensor.
The REMOTE SENSOR is connected to the ID and GND on the controller terminals.
24V CONTROL WIRING
All excess wire should be pushed back into the wall as far as possible. Excess wire inside the thermostat plastic case may interfere with the air flow across the temperature sensor.
THERMOSTAT CONNECTIONS C – 24V Common for Control Circuit
R – 24V Supply for Control Circuit W1/E – E Heat/ First Stage Heat W2 – Second Stage Heat
O/B – Reversing Valve - energized in HEAT mode(B is default)
Y1 – 1st Stage Compressor / Cooling / Heating
Y2 – 2nd Stage Compressor / Cooling / Heating
Y0/D – Economizer / Dehumidifier output * A – Ventilation Output
G – Fan
L – Input for CS2000A or compressor fault A+, B – Not Used.
GND – Ground **
OD – Outdoor Temperature Sensor ** ID – Indoor Temperature Sensor **
*Controller must be configured for “No Economizer” for dehumidification control to be active
**Shielded twisted pair should be used for remote Indoor and Outdoor Sensors to avoid any possible interference from other electrical systems or other external sources. The shield (drain) should be connected to 24V Common (C) at the controller.
For specific 24V control circuit wiring refer to the Bard Low Voltage Control Circuit Wiring manuals or the equipment installation instructions packaged with each piece of equipment.
