OJ Electronics GreenZone Module MP-Bus Instruktionen Seite 10

English OJ GreenZone™ Module MP-Bus
The temperature offset potentiometer ETFWP-998 from OJ Electronics has both
PT-1000 room sensor and potentiometer.
NOTE!
If an alternative potentiometer is used, the potentiometer resistance must be
min. 4.7 kΩ and max. 22 kΩ.
Connector "N" – Window contact, frostalarm and PIR sensor (see fig. 3)
OJ GreenZone™ Module MP-Bus is equipped with digital inputs for the connection of
window contact, frost thermostat and PIR sensor. On the overview diagram (fig. 3), the
input terminals are marked "N".
Frost thermostat
The frost thermostat should be attached physically to the heating element. Suitable
thermostats are Danfoss type KP61, Thermokon type TFR or TFR-R, or similar ther-
mostat with bulb or capillary tube. The bulb or capillary tube should be attached to the
heating element in the air flow on the hot side of the element. If the frost thermostat is
activated (digital input opens), the installed heating valve will be forced to open 100 %.
The frost thermostat should be connected electrically as shown in fig. 12. The NC
contact of the frost thermostat should be used so that the input is active when there is
no danger of frost. The input is factory-equipped with a jumper.
Window contact
The window contact should be physically attached to the window or windows to be
monitored. If several windows are to be monitored, the window contacts should be con-
nected in series. If the windows are opened (the window contact is opened), the heating
and cooling valves will be forcibly closed. The VAV damper can be set to close.
The window contact(s) should be electrically connected as shown in fig. 20. The NO
contact of the window contact(s) should be used so that the input is active when the
window(s) is(are) closed. The input is factory-equipped with a jumper.
PIR sensor/motion detector
The PIR sensor should be positioned in the area of the room where motion is to be
detected. If several PIR sensors are to be used, they should be connected in parallel. If
the PIR sensor(s) detect motion in the room, the zone will be activated and controlled in
accordance with the set operating parameters.
The PIR sensor(s) should be electrically connected as shown in fig. 21.
The NO contact of the PIR sensor(s) should be used so that the input is active when
motion is detected in the room.
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