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Wiring a Pressure Sensor (provided by others)
A pressure sensor can be connected to the Heatronic 4000 to provide water pressure monitoring.
The control supports a pressure transducer that provides a 0.5 to 4.5 V (dc) output. The control
provides 5 V (dc) power supply for the pressure sensor.
• Connect one wire from the power supply (+5 VDC) on the pressure sensor to the 5V dc Out
terminal 13.
• Connect one wire from the pressure signal on the pressure sensor to the Vdc (+) In terminal 14.
• Connect one wire from the GND (0V) on the pressure sensor to the Gnd (-) terminal 15.
Wiring a Common Flue Sensor (provided by others)
A common flue sensor can be connected to the Heatronic 4000 to provide monitoring of the common boiler plant
flue temperature. The common flue sensor can also be used to provide a common flue temperature maximum
limiting feature.
• Connect one wire from the vent sensor to the Com Flue terminal 23.
• Connect the second wire to the Com terminal 25.
EMS, Modbus
®
& BACnet
EMS Connection
An Energy Management System (EMS) can be connected to the Heatronic 4000 to provide a
target water temperature. Either a 0 to 10 V (dc) or 2 to 10 V (dc) signal may be used.
• Connect one wire from the EMS to the EMS (+) In terminal 16.
• Connect a second wire from the EMS to the Com (-) terminal 19.
A 0 - 20 mA signal can be converted to a 0 - 10 V (dc) signal by installing a 500 Ω resistor in
parallel between the Com (-) & EMS (+) In terminals (19 & 16). The EMS Signal setting must
be set to 0-10.
A 4 - 20 mA signal can be converted to a 2 - 10 V (dc) signal by installing a 500 Ω resistor in parallel between the Com (-) &
EMS (+) In terminals (19 & 16). The EMS Signal setting must be set to 2-10.
Requirements : the APP MODE setting in the Setup Menu must be set to EMS.
®
Modbus
Connection
A Building Automation System (BAS) can be connected to the Heatronic 4000 for
remote monitoring & adjustment capability. Modbus
connection. Use 18 AWG Twisted Shielded Pair cable. Cable length is dependent on the
baud rate & whether or not terminating resistors are used. Refer to the BAS Integration
Manual Heatronic 4000_B for details on the maximum recommended cable length.
• Connect the B (+) terminal on the BAS network to the RS 485 B (+) terminal 40.
• Connect the A (-) terminal on the BAS network to the RS 485 A (-) terminal 41.
• Connect the ground (G) terminal on the BAS network to the Gnd terminal 42.
Heatronic 4000
®
Connections
®
communications use an RS 485
28 of 60
Terminals 13 to 15
Terminals 23, 25
Terminals 16, 19
EMS
Out
Prim
Com
doo r
Sup
(-)
(+)
In
17
18
19
16
No Pow er
Terminals 40 to 42
B
A
( +) ( –)
Gnd
RS 485
40 41 42
H eat r oni c 4000
BTC461503101C | 6720810369 (2018/03)
5V
Vdc
Gnd
dc
(+)
(-)
Out
In
13
14
15
Pre s sur e
Sen sor
Com
Boil
Com
Flue
In
23 24 25
No Pow er
-
+
EMS
B A G
(+) (-)
M ast er
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