Electrical Connections - Novatech 1732 Technical Manual

4.6 Electrical Connections

All wiring should comply with local electrical codes. The printed circuit boards are fully floating above earth.
The incoming safety earth (PE) must be connected to the primary earth stud in the right-hand side of the
base cabinet.
The local fuse for the mains power supply, the isolation switch and the supply wiring must all comply with the
electrical safety codes and must only be installed by qualified technicians.
All earth and shield connections should be connected to the earth screws inside the case.
Essential Wiring
Probe Enable Input
Burner safety interlock, or if
the interlock is not required
link terminals 10&11
Optional Wiring
4-20mA Analog 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
Optional Wiring
Analog 4-20mA Input
Used to input variable flue
pressure
Oxygen Sensor 1
Oxygen Sensor 2
Optional Wiring
Mains Power Output
Connect to Gas Solenoids for Automatic system
calibration checking or filter purging
Essential Wiring
Mains Power
Connect 110-240VAC using reinforced insulation wiring.
EARTH must be connected to PE earth stud
Optional Wiring
Alarm relays
User programmable NO contacts.
Contact rating 2A/240VAC or 2A/30VDC
When connecting mains voltage use reinforced insulation
DO NOT CONNECT MAINS and LOW VOLTAGE ON
ADJACENT TERMINALS
Connection Diagram for 1732 Transmitter and one or two 1231 / 1234 Heated Sensors
August 2018
1732 Oxygen Transmitter
wiring.
Orange 1 Sensor 1+
2 Sensor 1-
Brown
3 TC 1+
Black
4 TC 1-
Blue
Orange
5 Sensor 2+
Brown 6 Sensor 2-
Black 7 TC 2+ / AUX TC+
Blue 8 TC 2- / AUX TC-
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 Common
23 +V
24 BFT+
25 BFT-
White
White
White
White
44 Heater 1
43 Heater 1
WARNING
42 Heater 2
Mains Power Output to
Heated Probes
41 Heater 2
40 Cal/Purge 1
39 Cal/Purge 2
38 Solenoid Common
37 Mains A
36 Mains N
35
34 Mains E
33 Alarm 3
32 Alarm 3
31 Alarm 2
30 Alarm 2
29 Alarm 1
28 Alarm 1
27 Common Alarm
26 Common Alarm
Technical Manual
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