intech 21 OPLC-2100 Operation Manual

The One Pipe Local Controller OPLC-2100 V3.26 (Fig 1) has been designed to provide control of the Steam Zone Valve in
One Pipe Heating System to regulate the amount of heat (thermal energy) supplied to a building, as well to provide control a
Steam Boiler. On the Steam Boiler application the OPLC-2100 is equipped an auxiliary board to supply 4 – 20ma interface
to control the Boiler's actuator. On this document we will describe the Steam Boiler Control further called as "Boiler+".
OPLC-2100 works as a standalone controller or can be connected to a Local Server, which furnishes the additional
parameters adjustments to OPLC-2100 based on apartments real time temperature reading in order to improve the heating
supply efficiency and avoid apartment over/under-heating. When the OPLC-2100 is connected to the Local Server it can be
monitored and controlled from the local Intranet and/or Internet with appropriate authentications. On all applications
automatic control of the main parameters in accordance with operation settings and measured temperatures/pressure to
achieve optimal heating delivery and reduce fuel losses.
The OPLC-2100 features:

Adjustable Day and Night modes of operation.

Adjustable Winter and Summer modes of operation.

Programmable Heat Up and Cool Down set points.

Morning Boost period up to 120 min.

Provides compensator control for unusual weather conditions

Measures and displays outdoor and heating system sensors temperature.

Measures and displays Boiler's steam pressure.

Sensors malfunction processing and indicating (open/short situation).

Displays the control cycle parameters and valve status.

Adaptable to different types of standard temperature and pressure sensors, and valve motors.

Simple calibration procedure for the temperature and pressure sensors.

Internal real-time clock/calendar with backup battery.

Automatic storage of setup values. No loss of setup values or mode of operation if power is OFF for extended time.

Automatic Daylight Saving Time clock adjustment.

Locally controlled by the four-button keypad and convenient menu.

Password protection for the critical settings.

Remotely controlled and/or monitored through the RS485 interface.

PID controlled analog output 4-20mA or digital potentiometer for flame modulations to maintain the
required steam pressure during the boiler ON cycle.
21 Harbor Park Dr. N, Port Washington Phone: 516.656.72211 Fax: 516.626.7201
One Pipe Local Controller OPLC2100
1. Introduction
Figure 1. OPLC2100. Front view
OPLC-2100 Operation Manual
CONFIDENTIAL
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