P.W. KEY RK-2001U, Руководство по эксплуатации

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[Ar 2] mode – output may control mixing valve servo-motor. Controlling the mixing
valve requires room thermostat to be connected to the controller. The mixing valve is
being opened and closed depending on the room thermostat input. Additionally, mixing
valve is opened in case of overheating or boiler temperature sensor malfunction.
[Ar 3] mode – output may control boiler emergency cooling system (e.g. pump). In this
mode the additional output is turned on in case of boiler overheating or boiler
temperature sensor error alarm.
[Ar 4] mode – output may control devices working together with blow-in fan.
CAUTION. Equipment should be connected to additional output using UM-1module.
Connection schemes are shown on picture 3.
4.7. Testing of device's outputs.
To make checking the controller work easier, it is possible to test output circuits which
control the fan and the pump, and the circuit which controls additional boiler. This
function is available in service mode, only if the control process is off, i.e. the controller
was in STOP mode before switching to service mode. By choosing [outP] on the
display and pressing OK button you can turn on the circulating pump for a while, by
choosing [outΠ] and pressing OK you can turn on the pressure fan and by choosing
[outr] and pressing OK you can turn the additional boiler, the alarm signaling system
or the mixing valve servo-motor on (if the additional module is connected).
4.8. Factory defaults.
You can return to standard settings, set by the producer, by choosing [Prod] option in
service mode and pressing OK button. After activating this function, the device sets
each parameter showed in the table to default.
4.9. Exiting service mode.
By choosing [End ] option on the display and pressing OK button you can quit service
mode. The device also quits service mode, when no buttons are pressed for 1 minute.
5. Additional functions.
To improve comfort in heated rooms, the device is equipped with input allowing to
connect any kind of room thermostat with contact output. When temperature in the
room is below desired temperature, the circulating pump is turned on and the room
thermostat indicator is lit. It means that the boiler should keep temperature set by the
room thermostat. After reaching desired temperature in the room, the room thermostat
indicator turns off, the circulating pump is turned off and the boiler switches to mode, in
which it's keeping minimal temperature.
CAUTION. In case of not having room thermostat in the system, the room thermostat
input contacts must be short-circuited.
6. Device failures.
The controller is constantly testing if its internal circuits and temperature sensor are
working correctly. After detection of fault, it stops the pressure fan, turns on the