P.W. KEY RK-2001U, Operation Manual

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1. Application.
RK-2001U controller is a device designed for temperature control of solid fuel fired
boilers. The temperature of the boiler is kept on level set by user, by controlling the
speed of the pressure fan. The controller monitors temperature of water in the boiler,
displays it on the display, and controlls circulating pump. To enable more precise
temperature control of heated rooms, the controller is equipped with input for room
thermostat. The controller is equipped with extra programmable multi-functional
output, which allows connecting mixing valve, alarm signal, extra boiler (gas or
oil-fueled), emergency cooling system or other devices turned on simultaneously with
blow-in fan.
2. Connection.
Before turning on the device by master switch, connect controller, pressure fan and
circulating pump power cords to appropriate sockets in the rear of the controller.
Temperature sensor should be placed in measurement hole in the boiler. Picture 2
shows diagram of electrical connection of the device.
WARNING! Before plugging the device to the power source check if it is proprerly
grounded and if the screws of the connector are properly screwed.
CAUTION! The maximum total power of devices connected to the controller mustn't
exceed 450W.
CAUTION! As additional option you can connect the UM-1 module to the controller
that allows controlling the additional boiler or the mixing valve and the hot water
loading pump. It is necessary to protect the power supply of these devices with
suitable cut-outs.
Not used power outs of the controller may remain unconnected.
3. Operation.
After turning the device on, all the elements of the display are lit for a while to check if
they are working properly. The controller, when power appears, returns to its last state
before turning off or power loss.
Front of the device (picture 1) consist of:
1 – Master switch
2 – Display, indicating boiler temperature and parameters
3 – Room thermostat indicator
4 – Boiler thermostat knob
5 – Circulating pump indicator
6 – STOP/choose parameters/erase alarms button
7 – START/choose parameters button
8 – Start programming in service mode/confirm settings button