Page No 20 Reznor, Guardian GB GR and GS, Installation Manual, EN 2021-08, D301214 Iss D
I
Wiring diagrams.
NOTE External switch inputs (e.g. Timer) to be volt free and wired via normally open contacts to
terminal pair marked e.g. ‘timer’ (contacts closed to enable). Remove relevant factory fitted jumper
for any optional input.
Installer wiring - Ambient models, single phase
230v 50Hz
MAINS SUPPLY
RJ45 Cable
Programmer
Keypad
External Switch
(BMS)
Door Switch
J1
Factory Connections
Installer Wiring
900725 Guardian Signal Pro Series Ambient - Installer Connections
J2
6
5
4
3
2
1
L N
PE
Figure 20 Wiring diagram ambient
Terminal
Description
Cable
N
Neutral
1.5mm²
L
Phase 1 (or 1 Phase
supply)
PE
Mains earth
3 & 4
Optional external
switch
5 & 6
Optional door contact
1 & 2
Not used
PCB Fuses
Rating (A)
F1
T1H (slow blow)
Table 6 Cable specification ambient
Protection
External circuit breaker with the appropriate
rating should be installed for the protection of the
installation.
