Intronics PI-03 Installation Manual

APPLICATION
PI series is a 24 VAC/VDC Modulating Digital Thermostat that provides Proportional + Integral (P+I)
control for optimum temperature control and comfort in HVAC system. It is used with the single fan speed.
Other available features include selection of Minimum / Maximum setting temperature, Digital input for
energy savings, Mode of display. The remote temperature sensor can also be provided as the optional.
Table 1 : Description of Thermostat
Model Mounting
PI – 03
Vertical
PI – 04
Vertical
FEATURES
 Stylish design with digital display.
Minimum temperature setting from 5 – 23 ºC (Default 11 ºC).

Maximum temperature setting from 16 – 34 ºC (Default 30 ºC).

Compatible with 10 different characteristics of modulating valve/damper.

Setting of calculating position cycle.

K setting.

p
T setting.

i
Temperature offset –2 to +2 ºC (Default 0 ºC).

 Digital input for energy savings.
 Mode of display : Room temperature, Setting temperature or % of valve/damper opening.
Remote sensor (optional) with auto detect of temperature sensor (internal or remote sensor).

Sensor error alarm.

EEPROM permanently retains user setting in case of power loss.

Modulating Digital Thermostat
PI – 03
Fig.1 PI – 03 & 04
Operating voltage
24 VAC Modulating 0-10V or 2-10V
24 VAC Modulating 0-10V or 2-10V

INSTALLATION MANUAL

PI – 04
Type of control
PI – 03/04
Power on/off switch
No
Yes
170306-121E Rev.02