Intronics PI-03 User Manual

PI – 03/04
Modulating Digital Thermostat
INSTALLATION MANUAL
170306-121E Rev.02
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.
PI – 03 PI – 04
Fig.1 PI – 03 & 04
Table 1 : Description of Thermostat
Model
Mounting
Operating voltage
Type of control
Power on/off switch
PI – 03
Vertical
24 VAC
Modulating 0-10V or 2-10V
No
PI – 04
Vertical
24 VAC
Modulating 0-10V or 2-10V
Yes
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
p
setting.
 T
i
setting.
 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.

Intronics PI-03 Specifications

General

Brand	Intronics
Model	PI-03
Category	Thermostat
Language	English

Summary

Features

Specifications

Dimensions

Operation

Power On/Off Switch (Model PI-04)

Describes the function of the ON/OFF switch for the PI-04 model.

Temperature Setting

Explains how to adjust the desired temperature using the Delta buttons.

Minimum Temperature Set Point

Details setting the lower limit for user-adjustable temperature.

Maximum Temperature Set Point

Details setting the upper limit for user-adjustable temperature.

PI Control Parameter

Covers programming the proportional (Kp) and integral (T1) control values.

Temperature Offset

Display Mode

Temperature Display Format

Remote Sensor Option

Digital Input for Energy Savings

Error Alarms

Installation

Mounting Location

Guidelines for selecting an optimal thermostat mounting position.

Mounting the Thermostat

Step-by-step instructions for detaching and mounting the thermostat back plate.

Wiring

Instructions for connecting wires to the thermostat back plate.

Wiring Diagram and Connection

Wiring Diagram

Visual representation of terminal connections for the thermostat.

Connecting Wire

Procedure for stripping and connecting wires to the terminal screw.

Installing Thermostat

Steps to snap the thermostat onto its back plate.

Secure Front Cover

Instruction to secure the thermostat with a screw.

Installer Setup

Entering Installer Setup

Procedure to access the installer setup mode using button combinations.

Program 1: Minimum Temperature Setting

Setting the minimum allowable temperature for the user.

Program 2: Maximum Temperature Setting

Setting the maximum allowable temperature for the user.

Installer Setup Programs

Program 3: Type of Valve/Damper

Configuring thermostat to match valve/damper actuating, feedback, and direction.

Program 4: Setting of Calculating Position Cycle

Selecting the interval time for valve control position calculation.

Program 5: Kp Setting

Adjusting the proportional factor (Kp) to control valve/damper opening speed.

Advanced Installer Setup

Program 6: T; Setting

Adjusting the integral factor (T1) to control room temperature response.

Program 7: Temperature Offset

Setting the sensor reading offset from -2 to +2 °C.

Program 8: Display Mode

Configuring the display to show room temp, set temp, or valve opening.

Program 9: Temperature Display Format

Selecting temperature display between integer or decimal number.