Secure H3747 Installation And Commissioning Guide

Label your wires
Pin
Label
Pin description
E
Earth
Earth
N
Neutral
Neutral
L
Live
Live
1
On 1
Zone 1 On
2
COM 1/2
COM
3
On 2
Zone 2 On
4
COM 3/4
COM
5
On 3
Zone 3 or hot water On
6
On 4
Zone 4 On
Earth
Backplate
N L
1
2
3 4
N L
1
2
3
4
5
6
5 6
If replacing, take a picture of your old thermostat
connections, label and re-wire as shown in
Secure Controls installer app.
15

Secure H3747 Specifications

General

Brand	Secure
Model	H3747
Category	Thermostat
Language	English