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T6570, T8570 SERIES DIGITAL FAN-COIL THERMOSTATS
Table 5. Thermostat Parameter Options
Parameter ID Description
°C Scale °F Scale
Default Values Default Values
Temperature Scale tS Allows selection of either °C or °F scale Yes – No –
Dead Band db Setting deadband (Zero Energy Band) 2 2, 3, 4 4 3, 4, 5
Heat or Cool
Operating Mode
OP Setting operating mode on single relay,
non-changeover models, to either Heat
or Cool
0 0: cool
1: heat
0 0: cool
1: heat
Unoccupied Cooling
Setpoint
uC Program unoccupied cooling setpoint
for energy savings.
25 25 to 30 77 77 to 90
Unoccupied Heating
Setpoint
uH Program unoccupied heating setpoint
for energy savings
18 10 to 18 65 50 to 65
Minimum Cooling
Off Time
CO Setting cooling off-time for short cycle
prevention.
0 0, 3, 4, 5 0 0, 3, 4, 5
Minimum Heating
Off Time
HO Setting heating off-time for short cycle
prevention.
0 0, 3, 4, 5 0 0, 3, 4, 5
Minimum Cooling
Setpoint (Low Limit)
CL Sets the minimum allowable cooling
setpoint.
10 10 to 30 50 50 to 90
Maximum Heating
Setpoint (High Limit)
HL Sets the maximum allowable heating
setpoint.
30 10 to 30 90 50 to 90
Energy Savings
Configuration
ES Activate energy savings mode by a
choice of either contact closure or
contact opening.
1 1: normally open
0: normally closed
1 1: normally open
0: normally closed
Display of Room
Temperature
rt Allows installer to restrict temperature
display to set point only. With this
parameter, the unit will only display the
set point temperature. Useful where
setpoint limits (HL and CL) will affect
control performance and Room
Temperature display will disagree with
user setpoint.
1 1: room temp.
0: setpoint only
1 1: room temp.
0: setpoint only
WIRING
Table 6. Leadwire Color Code (if fitted)
Terminal Color Use
1 Black (BK) L1 (Hot)
2 White (WH) L2 (N)
3 Orange (OR) Heat
4 Yellow (YL) Cool
5 Gray (GY) Damper
6 Violet (VI) Fan Common
7 Red (RD) Fan Low
8 Blue (BU) Fan Medium
9 Brown (BN) Fan High
10 – Energy Mgt.
System
11 –
Fig. 6. Wiring 2-pipe cool-only thermostat with fan On/Auto
switch.
7 95C-10897–6