1735 Technical Manual - Novatech Controls

All wiring should comply with local electrical codes. The printed circuit boards are fully floating above earth.
All earth and shield connections should be connected to the earth screws inside the case.
Orange
Black
Red
1 Sensor 1+
2 Sensor 1-
3 TC 1+
4 TC 1-
Essential wiring
Probe enable input
Burner safety interlock, or if
the interlock is not required
link terminals 10&11
Optional wiring
4-20mA Outputs
User selectable ranges
Optional wiring
Pressure sensor to detect a
blocked filter during the
automatic purge cycle
Optional wiring
Digital communications. Connect to
a MODBUS network or computer.
See chapter 4.15 and 7.2.25
Orange
Black
Red
5 SENSOR 2+
6 SENSOR 2-
7 AUX TC 2+
8 AUX TC 2-
9 5VDC
10 BURNER INPUT
11 BURNER INPUT
12 OUTPUT 1+
13 OUTPUT 1-
14 OUTPUT 2+
15 OUTPUT 2-
16 FLOW SWITCH
17 FLOW SWITCH
18 RS232 Rx
19 RS232 Tx
20 NETWORK -
21 NETWORK +
22 NETWORK COM
Optional wiring
RGS temperature sensor
or External dry oxygen
23 +V
24 BFT+
25 BFT-
44 HEATER 1
43 HEATER 1
Oxygen Probe #1
42 HEATER 2
41 HEATER 2
Oxygen Probe #2
Optional wiring
Gas solenoids, MAINS VOLTAGE output
Automatic system calibration checking or
filter purging
Essential wiring
Mains Power
100-240VAC
EARTH must be connected
to PE earth-stud
40 CAL/PRG1
39 CAL/PRG2
38 SOL COMM
37 MAINS A
36 MAINS N
35
34 MAINS E
Optional wiring
Alarm relays
User programmable, NC contacts
DO NOT USE MAINS VOLTAGE and LOW
VOLTAGE on ADJACENT TERMINALS
33 ALARM 3
32 ALARM 3
31 ALARM 2
30 ALARM 2
29 ALARM 1
28 ALARM 1
27 COM ALARM
26 COM ALARM
Connection Diagram for 1735 Transmitter and one or two 1232 Unheated Probes
April 2012
24 1735 Water Vapour Transmitter