Specifications

6
2. To decrease the Y2 and W2 cut-in delay, press and hold the SET and DN buttons (N)
simultaneously. When delay time appears in the display, release the buttons and immediately
press the DN button and hold until the desired delay time is displayed, and release. To verify
the change, press and hold the SET and DN buttons until the delay time is shown, and release.
Configure 2
nd
Stage Cut-in For Time Delay and Thermostat Demand Only
1. Place the 2
nd
stage configuration jumper (Q) on the middle and lower pins - TIME.
2. If the cut-in time delay must be changed from the factory setting of 03 (3 min), follow the above
procedures to raise or lower the time delay value.
3. Verify time delay value by pressing the SET and DN buttons simultaneously.
HEAT PUMP OPERATION
TERMINAL FUNCTIONS / CONNECTIONS
TX / RX – Data Transmit / Receive
S S – Leaving / Supply Air Sensor Input
G – Fan Output
W2 – Auxiliary / Emergency Heat
O/B – Reversing Valve Output
Y2 – Stage 2 Cool Output
Y1 – Stage 1 Cool Output
R – 24vac from Unit Transformer
TC / TC – Time Clock Input for Occupied /
Unoccupied Operation
TR1 / TR2 – 24vac Power Input / Common
R / C – Stat Power Daisy Chain Stat to Stat
(18 ga. Thermostat wire)
LEGEND
A EH Jumper (Set Up Fan Operation for
Electric Heat)
B O/B Jumper (Heat Pump Only –
Reversing Valve Operation)
C H/P Jumper (Jump for Heat Pump
Operation)
D Priority Jumper (Allows for Priority Vote
Setup)
E On / Off Switch
F R C Power to ModStats (18 ga.
Thermostat wire)
G 24-Volt Transformer
H TC – TC Time Clock Terminals
I Unit Terminals
J S S Terminals – Leaving Air Sensor
(LAT)
K RX – TX Communications Wire
L Day / Night Switch
M Fan Jumper (Continuous or Auto)
N Up / Down / Set Buttons (High Limit,
Low Limit, Set)
O Digital Display (Leaving Air Temperature
and configuration)
P Lock / Unlock (Lock Thermostats)
Q Staging Strategy (Time / Temperature or
Time Only)