Technician Settings (Cont’)
P8 –
Functionality of T1 terminals
“00” - T1 terminals are not in use
“01” - External sensor
“02” - *T3 Soft start in heat sensor (FC)
or **Deicing in cool (AC)
“03” - Door switch
“04” - Key tag
“05” - T Economizer
(DIP switch SW2.6 must be ON)
P9 –
Functionality of IN1,0 terminals
“00” - IN1,0 terminals are not in use
“01” - *T2 Change over sensor (FC)
or Deicing in heat (AC)
“02” - **T3 Soft start in heat sensor (FC)
or Deicing in cool (AC)
“03” - Window contact Remote On/Off switch
“04” - Window contact Remote Economy switch
“05” - ***External Passive Infrared detector
P10 – Window contact (terminals IN1,0) polarity
“01” - Normally open
“00” - Normally close
* In heating mode, the fan will not start before
there is hot water in the coil.
** Allow deicing operation of indoor coil in cooling.
* In 2-Pipe system, T2 will sense the
water temperature in the pipe in order
to select/allow effective system mode.
** Where T1 terminals are used for
external sensor, the IN1,0 terminals
can be used for T3 sensor.
*** External PIR – only if internal PIR is
disabled (SW4.2 ON).
- 34 -
T1 terminals
Not in use
T1 sensor
(External
sensor)
T3 Soft start
in heat
sensor (FC)
or Deicing in
cool sensor
(AC)
Door switch
Key tag
T Economizer
“IN1,0”
terminals
Not in use
Window
contact
Remote
On/Off
Window
contact
Remote
Economy
***External
PIR sensor
*T3 Soft start
in heat
sensor (FC)
or Deicing in
cool sensor
(AC)
Window
contact
Normally
close
Window
contact
Normally
open
T2 change
over sensor
(FC)
or Deicing in
heat (AC)
