OJ Electronics OJ GreenZone Master Montageanweisung Seite 5

OJ GreenZone™ Master
Connecting digital outputs, marked "B and C"
– enabling signal, heating/cooling (see figs 4 and 6)
OJ GreenZone™ Master is equipped with two potential-free digital outputs, which
are activated when the zone is in heating status or cooling status respectively. Max.
voltage on "Dou1" and "Dou2" is 230 V, and max. load is 5 A.
The output (terminals 20-21) can be used to start the circulation pump of the
cooling system (fig. 6).
The output (terminals 22-23) can be used to start the circulation pump of the
heating system (fig. 6).
Connecting digital outputs, marked "D, E and F"
– operating signal and alarm relays (see figs 4 and 7)
OJ GreenZone™ Master is equipped with three potential-free digital outputs, which
are activated in the following circumstances:
Max. voltage on "Dou3", "Dou4" and "Dou5" is 30 V, and max load is 5 A.
Output "START" (terminals 24-25) is activated when at least one zone is in opera-
tion (fig. 7).
Output "A " (terminals 26-27) is activated when an A-alarm occurs in the zone
system (fig. 7).
Output "B " (terminals 28-29) is activated when a B-alarm occurs in the zone
system (fig. 7).
Connecting power supply, marked "G" (see figs 4 and 10)
OJ GreenZone™ Master must be connected to a 24 VAC power supply via termi-
nals 1 and 2 (see figs 4 and 10).
Connecting digital inputs, marked "H, J and K" (see figs 4 and 11)
OJ GreenZone™ Master is equipped with six digital inputs.
• Digital input 1 ("Din1"), terminals 3 and 4, is marked with this symbol
and is used for an alarm signal from the inlet fan. The alarm signal can be
produced by an overload relay, a thermal fuse or similar. The alarm is triggered
when the input is activated.
• Digital input 2 ("Din2" ), terminals 4 and 5, is marked with this symbol
used for an alarm signal from the exhaust fan. The alarm signal can be produced
by an overload relay, a thermal fuse or similar. The alarm is triggered when the
input is activated.
• Digital input 3 ("Din3"), terminals 6 and 7, is marked with this symbol "START"
and is used to change the status of all the connected zones.
When the input ("Din3") is open, all zones are in standby mode, meaning that all
VAV dampers are closed and the zones are forced to stop. The input can be used
if it is the main unit which is to enable zone operation. Electrical connection, see
fig. 22.
If the main unit is to be started by the first active zone, e.g. when motion is
detected by a PIR sensor, the input ("Din3") must be open. Electrical connection,
see fig. 23.
• Digital input 4 ("Din4"), terminals 7 and 8, is marked with this symbol "FIRE"
and is used to stop the main unit if there is a risk of fire. The alarm signal can be
produced by a central fire alarm system, a fire thermostat, a mechanical smoke
detector or similar. The alarm is triggered when the input is de-activated. System
operating mode in the event of fire is set by the installer via the web user-
interface and can be set to max. air volume and fully open VAV dampers or to
zero air volume, fully closed VAV dampers and inactive main unit (see the installer
instructions for further information).
• Digital input 5 ("Din5"), terminals 9 and 10, is marked with this symbol "MAX"
and is used to force all connected VAV zone dampers to open to max. air volume
when the input is activated (see the installer instructions for further information).
• Digital input 6 ("Din6"), terminals 10 and 11, is marked with this symbol "MIN"
and is used to force all connected VAV zone dampers to close to min. air volume
when the input is activated (see the installer instructions for further information).
Connecting sensor inputs, marked "L" (see figs 4 and 12)
OJ GreenZone™ Master is equipped with two PT1000 sensor inputs for connect-
ing a temperature sensor in the cooling circuit /buffer tank for heating pump and an
outdoor temperature sensor. The sensors are standard PT1000 sensors, e.g. type
ETF-x98 from OJ Electronics.
The temperature sensor that measures the water temperature should be connected
to terminals 12 and 13. The sensor may be of a type that measures the surface
temperature of the cooling water pipe or a type intended for installation in a sensor
socket.
The temperature sensor that measures outdoor temperature should be connected
to terminals 13 and 14.
and is
NOTE! - Please note that terminal 15 has no function!
© 2017 OJ Electronics A/S
English / Instruction
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