KEY RK-2001W4 User manual

OPERATION MANUAL
RK-2001W4
SOLID FUEL FIRED
BOILER TEMPERATURE CONTROLLER
Wersja E128

Table of Contents.
Introduction ................................................................................................... 3
Operation ...................................................................................................... 3
Method of determining the set temperature of the boiler .............................. 4
Working in combination with exhaust gas sensor ......................................... 5
Working in combination with a room thermostat .......................................... 6
Alarms .......................................................................................................... 6
Setting up the user parameters. ..................................................................... 7
The desired boiler temperature [C 45] ............................................................. 7
Central heating pump work [co C] – WINTER/SUMMER ............................... 7
Total bacteria control in the hot water tank [cu u] ........................................... 8
The temperature measured by the additional sensor [u50 °] .......................... 8
The temperature measured emissions [150 °] ................................................ 8
Parameter setting – the service mode ............................................................ 8
Table 2. Service parameters list ...................................................................... 9
Pressure fan work parameters ........................................................................ 10
Central heating pump parameters .................................................................. 11
Settings of the sensor operation mode and additional pump .......................... 11
Setting the operating temperature range of the boiler .................................... 12
Boiler overheating protection .......................................................................... 13
No fuel ............................................................................................................. 13
Multifpurpose output ....................................................................................... 13
Setting the exhaust gas temperature control parameters ............................... 14
Testing of device's outputs .............................................................................. 14
Factory defaults .............................................................................................. 14
Exiting service mode ....................................................................................... 15
Device removal ............................................................................................... 15
Specifications .................................................................................................. 15
Connection diagram of the RK-2001W4 ......................................................... 16
Schemes of connecting additional devices ..................................................... 16

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1. Application.
Controller RK-2001W4 is a device designed for temperature control in solid fuel fired
boilers equipped with:
- blower,
- central heating pump,
- domestic hot water pump, mixing pump or a pump charging the accumulative tank
(optional),
- household thermostat or exhaust gases temperature sensor (optional),
- signalling device or an additional boiler (optional).
2. Connection.
Before connecting the controller to the power supply, check if: power cords of the
controller, the blower and the central heating circulation pump are properly plugged
in the appropriate slots at the back of the device. The boiler water temperature and
the exhaust gases temperature sensors should be installed in a measurement
openings of the boiler. The schematics of connecting the regulator is shown in
picture 2.
CAUTION! Before plugging in the controller first check if the wiring system is
properly grounded and if the screw terminals of the output connector are tightened.
CAUTION! The total power of the devices connected to the controller must not
exceed 700W.
The unused outputs may remain disconnected.
3. Operation.
Turning on the controller is signalized by a brief switching on all the light indicators
on the display to enable to check their status. After the regulator has been
connected to the power supply, it returns to its most recent mode (before turning it
off or power failure).
The front panel of the controller (picture 1) includes:
1 – power switch,
2 – boiler temperature and parameters indicator,
3 – boiler thermostat knob,
4 – Ok button used for programming activation and parameters confirmation,
5 – STOP button also used for parameters selection and alarm cancellation,
6 – START button also used for parameters selection.

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Picture 1. Front panel of the RK-2001W4 controller.
The basic operation of the regulator depends on setting the desired temperature with
the thermostat knob. The remaining functions are carried out according to the
programmed parameters of the service mode. The change of thermostat parameters
is shown on the display for a few seconds, e.g. [C 65] and defines the value of the
boiler water temperature the regulator is going to reach.
ressing the START (6) button activates both the blower and the possibility of its
control. The STOP (5) button allows the user to stop the work of the blower, e.g. in
order to refuel the boiler. If the regulator is out of the user’s mode, the temperature
of the boiler water is shown on the display and the last symbol indicates the working
mode status:
[50°-] - stands for the STOP mode
[50°C] is the WORK mode
[50°c] indicates maintaining the heating while in the WORK mode
[50°U] means heating the domestic hot water in SUMMER mode
[50°u] is maintaining the heating while in SUMMER mode
.[70°d] indicates the bacteria eradication mode – heating the domestic
hot water up to 75°C
3.1. The method of determining the desired temperature of boiler water.
The temperature maintained in the boiler (the programmed one) depends on the
working mode of the household thermostat input (the exhaust gases sensor) as well
as on the additional pump working mode. Table 1 contains the list of all parameters
values possible to set.

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If the circulation system is equipped with the accumulative tank, the desired boiler
water temperature equals the value set with the thermostat knob (3).
If the heating system is equipped with the domestic hot water tank, the higher of two
component temperatures is accepted as the desired boiler water temperature –
either the temperature needed by the central heating circulation or the boiler water
temperature necessary to heat up the domestic hot water tank.
In all other cases (no additional pump and when the mixing pump is installed) the
desired boiler water temperature is the same as the temperature needed by the
central heating circulation.
The temperature necessary to heat up the tank is taken into account when the
domestic water temperature is too low only and it equals the total of the programmed
hot water temperature [u 50] and the value of its increase [uP 5].
The temperature needed by the central heating circulation is determined on the
basis of the value set with the thermostat knob (3) and the household thermostat
input status. If the exhaust gases sensor is connected, then the central heating
temperature equals the value set with the knob. If the household thermostat is
connected and its contacts are opened, the central heating temperature is the same
as the minimum boiler temperature [L 45], and if its contacts are opened, the central
heating temperature equals the value set with the knob.
Table 1. Methods of establishing the desired temperature of boiler water.
Thermostat
input
Additional pump working mode
None
[ur 0]
Domestic hot water
[ur 1] lub [ur 2] Mixing pump
[ur 3] Accumulator [ur 4]
Exhaust gases
sensor Set with knob Of which higher:
– Set with knob
– Domestic water
heating temperature
Set with knob Set with knob
Thermostat
contacts
opened Minimum Domestic water
heating temperature Minimum Set with knob
Thermostat
contacts closed Set with knob Of which higher:
– Set with knob
Domestic water
heating temperature
Setpoint knob Set with knob
3.2. System with the exhaust gases sensor operation.
If the heating system has been equipped with the exhaust gases temperature sensor
and the temperature of the boiler water approaches the desired value, the regulator
will switch into the mode of stabilizing the boiler water temperature.

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3.3. System with the household thermostat operation.
If the heating system is equipped with the household thermostat, the desired
temperature of the boiler water depends on the status of its contacts (3.1.). As an
addition the central heating pump work may, depending on the service settings, be
influenced by the household thermostat.
4. Alarms.
The correctness of the inside circuits and the temperature sensors work is tested
continuously. When a failure is detected, the information of the errors that has
appeared is displayed and the adequate action is undertaken.
The [FUEL] caption when displayed indicates fuel demand alarm. After the boiler has
been refuelled, the alarm can be cancelled with the STOP button.
The [Hot] caption is displayed alternately with the exhaust gases temperature e.g.
[°410] means the temperature of 400°C has been exceeded by the exhaust gases. In
such case the blower is turned off by the regulator (it is turned on during draught cycle
only). The regular work is resumed after the temperature of the exhaust gases has
decreased below 250°C.
The [E 1] error indicates that a failure in the boiler sensor circuit has occurred. The
error will induce the blower to turn off and the central heating pump to turn on. After
the reason for the alarm has been removed, it can be cancelled with the STOP button.
The [E 2] error indicates that the boiler overheating has occurred. The error will
induce the blower to turn off and the central heating pump to turn on. The alarm can
be cancelled with the STOP button after the boiler water temperature has decreased.
The [E 8] indicates that a failure of the additional sensor circuit has occurred. If the
additional output operates in the domestic hot water pump working mode, then the
topping up the hot water tank is ceased. When the output works as a mixing pump, the
protection of the return temperature is turned off. If the additional pump is intended to
charge the accumulative tank, then it is turned on permanently. It is not necessary to
cancel the alarm manually (it is cancelled automatically after the reason for failure has
been removed).
The [E128] indicates that a failure of the exhaust gases temperature sensor has
occurred. In case of the alarm, the regulator operation is continued in the stabilizing
the boiler temperature mode. The alarm does not need cancelling manually (it is
cancelled automatically after the reason for failure has been removed).
When several errors occur at the same time, the total of their codes is shown on the
display, e.g. the [E 3] caption indicates both failure of the boiler temperature sensor
and boiler overheating have occurred.

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5.Setting the user’s parameters.
When you press the OK button briefly, the regulator enters the viewing and setting
the user’s parameters mode. It is possible to view the parameters with buttons
marked with “+”, “-”. After the particular parameter has been selected, you can enter
the changing mode of the given parameter by simply pressing the OK button – this is
signalized with a blinking value of the parameter. Pressing the “-“ or “+” button will
introduce the change of the parameter. To confirm the newly set value, press the OK
button; then the regulator enables the user to select the next parameter. If there is
no need to change values of the parameters, then select [End] and press the OK
button or wait about 1 minute – the regulator will exit the user’s mode and the
temperature of the boiler water will be shown.
Table 2. List of the user’s parameters.
Display Parameter Min Max Jump Producer’s
settings
C 45 Programmed boiler temperature L65 H90 1°C -
co C Central heating pump working mode (‘C’ –
WINTER, ‘-‘ – SUMMER) C - C
cu u Domestic hot water pump working mode (‘u’ – regular work, ‘d’ – bacteria
eradication program) u d u
u50° Temperature measured with the
additional sensor
150° The measured temperature of the
exhaust gases
End Exiting the user’s mode
The first column of the table shows the exemplary indications of the display, the next
columns: description of a parameter, the minimum and maximum values that may be
set as well as the jump of the value during its setting. The last column includes values
preprogrammed by the producer – one can return to them by selecting the [Prod]
service function.
The programmed boiler temperature [C 45] – is the value of boiler water
temperature the regulator is going to reach while in the WORK mode. It is set by
turning the thermostat knob manually (3) and shown briefly on the display.
CAUTION! The value of the desired boiler temperature may be different from the one
set with the thermostat knob. The detailed description has been included in 3.1.
differ from the value set by the knob. A detailed description is included in section 3.1.
5.2. Central heating pump work [co C] – the WINTER/SUMMER mode – the
WINTER mode is indicated with the letter ‘C’ – then the rooms are heated by
appropriate central heating pump control. Selecting the ‘-‘ value means the SUMMER
mode has been introduced. Then the central heating pump is turned off and the

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domestic hot water system or the accumulative tank only are supported by the
regulator. If the additional pump is turned off or it works as the mixing pump, then there
is no possibility of changing the WINTER/SUMMER mode (the parameter is not
available).
CAUTION!!! If the heating system is not equipped with accumulative tank, then when
a failure of the boiler sensor occurs, the temperature of the boiler water exceeds the
maximum value or the boiler overheating takes place, the central heating pump will be
turned on regardless of the working mode.
5.3. Domestic hot water tank working mode (bacteria eradication program) [cu u]
–the regulator enables to activate the process of bacteria eradication in the domestic
hot water tank manually. After selecting the ‘d’ value, the boiler is going to reach the
temperature of 75°C in the domestic hot water tank. Once the temperature of 75°C in
the domestic hot water tank is obtained, the bacteria eradication programme will be
turned off automatically. The parameter is not available if the additional pump works in
a mode other than the domestic hot water mode.
CAUTION! To prevent the users from being scalded, the option of bacteria eradication
should be switched on at night time when the water is not taken from the domestic hot
water tank.
5.4. The temperature measured with the additional sensor [u50°] – the parameter
presents the temperature of the accumulative tank or the domestic hot water tank tem-
perature. If the additional pump is turned off or operates in the mixing pump mode,
then the parameter is not available.
5.5. The measured temperature of the exhaust gases [150°] – the parameter is
available when the household thermostat input is switched to measurement of the ex-
haust gases temperature. In such case the above mentioned temperature is displayed.
6. Setting the parameters – service mode.
Holding the OK button for over 3 seconds will cause the regulator to enter the
viewing and setting parameters of the service mode. To view the parameters use the
buttons marked with ‘+’, ‘-’. After you have selected the particular parameter, it is
possible to enter the mode of change by pressing the OK button. This is signalized
with the blinking of the set value. The change of the parameter will occur after
pressing the ‘-‘ or ‘+’ button. To confirm the set value, press the OK button. Then the
regulator enables the user to select the next parameter. If it is not our intention to
change the parameter value with the + or - buttons, then select [End ] and press the
OK button or wait about 1 minute – the regulator will leave the service mode and the
temperature of the boiler water will be shown.

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Table 2. Service parameters list.
Disp. Parameter Min Max Step Factory
default.
Π100 Blower work capacity or maximum capacity when
Πr 1. 1 100 1% 100
n 40 Blower minimum capacity. 1 100 1% 40
Πh 5 Ratio of blower speed change. 2 20 1 5
Πr 0 Automatic regulation of blower speed. -, 0 10 1 0
Πn 5 Induced draught duration. --, 5 60 1s 5
Πu 6 Draught interval duration. 1 99 1min 6
r 50 Blower maximum speed at ignition. 1 100 1% 50
rh 5 Hysteresis of ignition turn-off. 1 45 1°C 5
P 40 Temperature of central heating pump turn-on. --, 20 70 1°C 40
Ph 2 Hysteresis of central heating pump turn-on. 1 40 1°C 2
Pc 2 30 second interval while turning on central heating
pump . --, 1 99 1min 2
ur 0 Sensor and additional pump working mode. 0 4 1 0
u 50 Additional pump operating temperature. 30 60 1°C 50
uh 5 Hysteresis of additional pump work. 1 30 1°C 5
uP 5 Increase in boiler temperature while heating
domestic water. 1 20 1°C 5
L 45 Boiler minimum temperature. 30 65 1°C 45
H 85 Boiler maximum temperature. 80 95 1°C 85
h 2 Hysteresis of boiler temperature. 1 10 1°C 2
A 99 Hysteresis of boiler temperature. 90 99 1°C 99
Fd2h Fuel shortage testing time with burning. --, 1 99-4h 1min 2h
Fb2h Duration of fuel demand testing in working mode. --, 1 99-4h 1min 2h
Ar 0 Additional output: 0-FUEL, 1-ALARM. 0 1 1 0
c--- Temperature of exhaust gases/exhaust gases
sensor turn-off. ---, 50 250 1°C ---
ch10 Hysteresis of exhaust gases temperature. 1 99 1°C 5
ct 5 Time constant of exhaust gases temperature
stabilization. 1 99 1 min 5
cF10 Blower speed jump while stabilizing exhaust gases
temperature. 1 20 1% 10
c90 Temperature of exhaust gases while detecting fuel
demand. 30 150 1°C 90
Prod Restoring producer’s settings after pressing OK
button.
outΠ Testing blower output. outΠ out1
outP Testing central heating pump output. outP out2
outu Testing additional pump output. outu out3
outr Testing additional output. outr out4
End Exiting service mode after pressing OK button.
Examples of display indications are shown in the first column. The next columns
contain: description of a parameter, the minimum and maximum values that may be
programmed as well as the jump of a value while setting. The values
preprogrammed by the producer can be found in the last column – it is possible to
restore them by selecting the [Prod] option.

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6.1. Parameters of blower work.
Blower maximum capacity [Π100] – is the maximum value of capacity at which the
blower can operate.
Blower minimum capacity [n 40] – is the minimum value of capacity at which the
blower can work.
Changing the rotational speed of the blower ratio [Πh 2] – the parameter
influences the way of decreasing the blower rotational speed when the temperature
of the boiler water approaches the programmed one. For instance, setting the 4
value indicates the blower will be working with the [Π100] maximum capacity if the
regulator is in the stabilizing the boiler water temperature mode or in the WORK
mode (while the exhaust gases sensor is turned off) and the temperature of the
boiler water is 4°C lower than the programmed one. The increase in temperature will
cause gradual slowdown in blower rotational speed to the [n 40] minimum capacity.
Automatic regulation of the rotational speed [Πr 0] – setting the parameter
between ‘0-10’ will induce the decrease in the blower rotational speed automatically
while the temperature of the boiler water approaches the programmed one. If the
parameter is set to ‘--‘, then the gradual regulation of rotational speed is not
available and the blower works with the capacity set with the ‘Π’ parameter. Setting
the parameter between 0 and 10 indicates period of time (counted in minutes) during
which the gradual increase in the blower rotational speed from the [n 40] minimum
value to the [r 50] occurs. This makes the ignition run smoothly.
Induced draught duration [Πn 5] – is the period of starting the blower temporarily
in order to remove the exhaust gases. Switching to ‘--‘ will cause the regulator to exit
the option.
Duration of intervals between draughts [Πu 6] – is the period of time between
draughts.
Blower maximum rotational speed while ignition [r 50] – the parameter defines
the maximum capacity the blower can work while ignition. If the [Πr 0] parameter is
set to ‘0’, then the blower capacity during ignition is determined.
Ignition turn-off hysteresis [rh 5] – the parameter defines by how many degrees
the stage of ignition is turned off before the temperature of the boiler water reaches
the programmed value or (when the exhaust gases sensor is turned on) before the
exhaust gases temperature reaches the programmed value. Exiting the ignition
mode will result in the regulator switching to the working mode.

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6.2. Central heating circulation pump working parameters.
Temperature of central heating pump turn-on. [P 40] – if the heating system is
not equipped with the accumulative tank ([ur 0], [ur 2] or [ur 3]), then the parameter
defines the level of the boiler water temperature at which the central heating pump
can be turned on. If it is set to ‘--‘, then too low temperature will not affect the pump
operation. However, it is turned on when the temperature of the boiler water exceeds
the [H 85] maximum temperature.
If the heating system is equipped with the accumulative tank ([ur 4]) – then the
parameter defines the value of the tank temperature at which the central heating
pump can be turned on. If it is set to ‘--‘, then the accumulative tank temperature will
not affect the pump operation.
Hysteresis of the central heating pump [Ph 2] – the parameter determines by
how many degrees the temperature of the boiler water or the accumulative tank
must be decreased below the temperature of turn-on so that the pump should be
turned off.
Time of restarting the central heating pump [Pc 2] – when the STOP mode is on
or the household thermostat circuit is opened, the pump is turned on for the period of
30 seconds so that the water of the heating circulation should be mixed. The
parameter determines the time of restarting the pump. The ‘--‘ value means turning
off the option.
6.3. The sensor and additional pump working modes settings.
The sensor and additional pump working modes [ur 0] – the parameter
determines the working mode of the output controlling the additional pump and of
the additional sensor input.
The [ur 0] value indicates the shortage of a sensor and additional pump. The sensor
input may remain disconnected as it is not taken into account when testing failures.
The [ur 1] value indicates that the domestic water pump is connected to the
additional output and the domestic water sensor is switched to the additional input.
In the mode, the domestic water pump is turned on when the tank water temperature
decreases by the [uh 5] hysteresis value from the programmed [u 50] value. After
the tank water has been heated up to the temperature programmed in the [u 50]
parameter or when the temperature of the boiler water is lower than the one
measured in the tank, the pump is turned off. Also, when the boiler temperature
decreases below the [L 45] minimum value, the domestic water pump will be turned
off. In the [ur 1] mode the domestic water is prepared with priority, which means that
while topping up the domestic water tank, the central heating pump is turned off.

12
Similarly, the [ur 2] value indicates the work of the additional input and output in the
domestic water heating mode. The difference depends on the hot water being
prepared with no priority, which means the central heating circulation pump is not
turned off while the domestic water tank is being topped up.
The [ur 3] value indicates the mixing pump has been connected to the additional
output and the return temperature sensor has been switched to the additional input.
In the mode, when the boiler return water temperature decreases to the [u 50]
programmed value of the return temperature, the mixing pump is turned off. The
mixing pump is turned off when the return temperature increases by the [uh 5]
hysteresis value from the [u 50] programmed value of the return temperature.
The [ur 4] value indicates the pump charging the accumulative tank has been
connected to the additional output and the accumulative tank temperature sensor
has been switched to the additional input. In the mode, when the temperature of the
boiler water increases by the [uh 5] hysteresis value from the accumulative tank
water temperature, the charging pump is turned on. The pump is turned off when the
temperature of the boiler water is equal to or lower than the accumulative tank water
temperature or when the temperature of the boiler water decreases below the [L 65]
minimum value.
The additional pump operating temperature [u 50] – depending on the additional
pump working mode the parameter indicates the domestic water programmed
temperature or the return temperature.
The additional pump hysteresis [uh 5] – the parameter determines the hysteresis
of the additional pump work.
The increase in the boiler temperature while heating the domestic water [uP 5]
– the parameter is taken into account when the additional pump works in the
domestic water heating mode. It indicates by how many degrees the maintained
boiler temperature will be higher than the [u 50]desired one while charging the tank.
6.4. Setting the range of boiler work temperature.
Boiler minimum temperature [L 45] – indicates the minimum temperature that can
be set with the thermostat knob.
Boiler maximum temperature [H 85] – is the maximum value of temperature that
can be set with the thermostat knob.
Hysteresis of boiler temperature [h 2] – determines by how many degrees the
temperature of the boiler water must be decreased from the programmed with
thermostat so that the regulator should be switched to the mode of maintaining the
temperature of the exhaust gases or to the WORK mode while the exhaust gases
temperature sensor is turned off.

13
6.5. Preventing the boiler from overheating.
The temperature of boiler overheating [A 99] – defines the value of temperature
which, when exceeded, causes the regulator to activate the alarm of the boiler
overheating.
STB – the regulator is equipped with an additional, independent of the processor
security against the overheating. When the temperature exceeds 95° C, the
regulation mode is stopped by the blower being turned off and central heating pump
being turned on. When the temperature is decreased below 89°C, then the blower
and the pump will be turned on to restore the regular work. Applying the STB system
allows the user to control the boiler work thoroughly and minimize the risk of
overheating.
6.6. Testing the fuel demand.
Duration of testing the fuel demand at ignition [Fd2h] – the parameter
determines the maximum period of time that may pass between turning on the
WORK mode and ending the ignition stage. If the ignition cycle is not going to be
finished before the programmed expiration, the fuel demand alarm will be activated.
Duration of testing the fuel demand in the working mode [Fb2h] – testing the
fuel demand in the working mode is activated when the temperature of the exhaust
gases decreases below the [c 90] value (while the exhaust gases sensor is on) or
the temperature of the boiler water decreases below the [L 45] value (when there is
no exhaust gases sensor). If the state is being maintained during the programmed
time, the fuel demand alarm will be activated.
6.7. Multifunctional output.
Additional multifunctional output working mode [Ar 0] – the regulator has been
equipped with an additional multifunctional output compatible with the modes given
below:
parameter [Ar 0] indicates the control of an additional oil or gas boiler. After the
regulator has been turned on with the power switch, the additional boiler is turned off
and when the fuel demand in the solid fuel fired boiler occurs, it is turned on again.
The option is useful in the heating systems where the solid fuel fired boiler is
included in order to decrease the costs of heating. After the fuel demand alarm has
been cancelled with the STOP button, the additional boiler is turned off again and
the work of the regulator is resumed.
parameter [Ar 1] indicates that the additional output will be working as an alarm
output to which a signalling device can be connected. Boiler sensor failure, error of
overheating or fuel demand will cause the indicator to turn on.

14
6.8. Setting the parameters regulating the exhaust gases temperature.
The exhaust gases temperature/ the exhaust gases sensor turn-on [c ---] – the
parameter determines by what temperature of the exhaust gases the blower
rotational speed will be decreased. Setting the parameter to ‘---‘ will cause the
sensor of the exhaust gases temperature to turn off. In such case the household
thermostat should be connected instead of the sensor or its contacts should be
closed.
Hysteresis of the exhaust gases temperature [c h10] – the parameter determines
by how many degrees the temperature of the exhaust gases must be decreased so
that the blower rotational speed should be increased.
Time constant of stabilizing the temperature of the exhaust gases [c t 5] – the
parameter determines the duration of changing the blower rotational speed while
stabilizing the temperature of the exhaust gases. If the exhaust gases temperature
exceeds the value programmed in the [c ---] parameter, the regulator will start
decreasing the blower rotational speed gradually up till the moment when the
exhaust gases temperature drops below the set value. If the temperature of the
exhaust gases decreases by the value of the set hysteresis, the regulator will start to
increase the blower speed gradually.
Blower speed jump while stabilizing the temperature of the exhaust gases [c
F10] – the parameter determines the value by which the blower speed is changed
while stabilizing the temperature of the exhaust gases.
The temperature of the exhaust gases while detecting the fuel demand [c 90] –
the parameter determines the level of the exhaust gases temperature below which
the function of detecting the fuel demand is activated.
6.9. Testing the outputs.
To control the correct work of the regulator, it is possible to test the output systems
controlling the blower, pumps and the additional boiler turn-on system. Selecting
[outΠ] on the display and pressing the OK button will result in the blower being
turned on, selecting [outP] with the OK allows button to turn on the central heating
pump, selecting [outu] will cause the additional pump output to be turned on and
choosing [outr] will cause the additional multifunctional output to be turned on.
6.10.Producer’s settings.
The regulator enables the user to restore the standard settings introduced by the
producer. Select [Prod] on the display and press the OK button to confirm it. When
the option has been activated, the regulator enters the values of particular
parameters given in table 3.

15
6.11. Exiting the service mode.
To exit the parameters setting mode, select [End] on the display and press the OK
button. Also, if no buttons will be pressed for 1 minute, exiting the mode occurs.
7. Controller disassembly.
When disassembly of controller is necessary, you need to:
– disconnect it from the power supply with the power switch,
– disconnect the boiler from the power supply,
– remove the controller from the boiler chamber,
– remove connectors and wiring from the regulator.
8. Technical specification.
Power supply 230V + 10%, 50Hz
Power consumption (blower and pump not included) < 4VA
Boiler temperature measurement range -9 - 109°C + 1°C
Exhaust gases temperature measurement range -30-500°C + 1°C
Boiler temperature adjustment range 65-90°C + 1°C
Boiler programmed overheating protection 90-99°C + 1°C
Boiler equipment overheating protection >95°C + 1°C
Pump turn-on temperature 20-65°C + 1°C
Total outputs rating max 2A/230V

16
Picture 2. Schematics of connecting the RK-2001W4 unit.
Picture 3. Schematics of connecting the additional devices.

17

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Information on disposal
This appliance is marked according to the European Directive 2002/96/EC on Waste
Electrical and Electronic Equipment (WEEE).
The symbol on the product, or the documents accompanying the product, indicates that
his appliance may not be treated as household waste.
The appliance shall be handed over to the applicable collection point for used up
electrical and electronic equipment for recycling purpose.
Ultimate disposal of the appliance shall follow according to applicable local regulations
on waste utilization. For more information about disposal, utilization and recycling
please contact your local authorities, household waste disposal service or the shop
where you purchased the product.
DECLARATION OF CONFORMITY
Manufacturer:Przedsiębiorstwo Wielobranżowe KEY
11-200 Bartoszyce, ul. Bohaterów Warszawy 67
hereby declares that the product:
RK-2001W4 Controller
is in conformity with provisions of the following directives:
73/23/EWG i 93/68/EWG (LVD 73/23/EEC + 93/68/EEC),
as superseded by Directive 2006/95/WE (EC Directive 2006/95/EEC);
89/336/EWG (Elektromagnetic Compatibility Directive 89/336/EEC),
as amended by Directive 93/68/EWG (EMC Directive 93/68/EEC)
on basis of compliance with the following harmonised directives:
PN-EN 55022:2006(U)
PN-EN 61000-4-2:1999+A2:2003
PN-EN 61000-4-3:2006(U)
PN-EN 61000-4-6:1999+A1:2003+IS1:2006
PN-EN 61000-4-4:2005(U)
PN-EN 61000-4-5:2006(U)
PN-EN 61000-4-11:2005(U)
PN-EN 60730-1:2002+A1:2006(U)A12:2004+A13:2005
PN-EN 60730-1:2005+A14:2006
PN-EN 60730-2-9:2006
PN-EN 61000-3-2:2006(U)
PN-EN 61000-3-3:1997+A1:2005+A2:2006+IS1:2006

Manufacturer: P.W. KEY
11-200 Bartoszyce, ul. Bohaterów Warszawy 67
tel. [phone], fax. [phone]
www.pwkey.pl e-mail: pwk[email protected]