Gabarron CM15 Installation instructions and user manual - page 11
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WARNING THE SUPPLY CABLE TO THE BOILER SHOULD BE OF SUFFICIENT SIZE TO CARRY THE
LOAD CAPACITY REQUIRED. IT SHOULD BE WIRED THROUGH A LINKED ISOLATOR SWITCH WITH
MINIMUM CONTACT GAPS OF 3mm IN EVERY POLE AND PROTECTED BY A SUITABLY RATED CIRCUIT
BREAKER MCB/RCD
Install the necessary electrical protections as indicated in the current regulations. In the event of these regulations not
being complied with, the manufacturer will not be liable for any bodily injury or material damage that may occur.
WARNING IT IS ESSENTIAL THAT THE BOILER IS PROPERLY EARTHED and the wiring tested to current
IEE regulations.
Electrical Supply Sizing
The following table shows the specification for a boiler installed on single phase supply.
Connection to Boiler
WARNING Touching live connections can cause serious personal injury.
Before establishing a mains connection switch off the power supply. Secure the power supply against being switched on
again. Mains connection terminals remain live even if the on/off switch is turned off.
The boiler is delivered ready for operation on 3x400V three phase supply. For operation on 230V single phase the
bridging connection supplied must be connected across the terminals of the connection block as shown.
The terminal connection block is at the rear right-hand side of the boiler and is accessed after removing the boiler front
panel . The supply cable should be safely routed to this point through the cable entry point on the right hand bottom of
the boiler.
CAUTION: A mains voltage at the incorrect plug terminal can destroy the electronics.
Make sure the connectin cables are securely fastened to the plug terminals.
Wiring External Controls
It is recommended that the boiler is controlled by an external control such as a time clock or room thermostat or a
combined programmable room thermostat such as the Elnur model CTP-10.
CAUTION: The switching connection of this control should be VOLT FREE and connected to the terminals
indicated ‘TA’ on the PCB. The factory fitted link across these terminals must be removed.
The boiler’s automatic power modulation feature is activated by the initial interruption of this switching link.
i
Rated output of boiler
4kW
5kW
6kW
7kW
8kW
9kW
10kW 11kW 12kW 13kW 15kW
Supply current
17.4A
21.7A
26.1A
30.4A
34.8A
39.1A
43.5A
47.8A
52.2A
56.5A
65.2A
MCB / RCD rating
20A
25A
32A
32A
40A
50A
50A
50A
63A
63A
80A
Minimum cable size
2.5mm
4mm
4mm
6mm
6mm
10mm 10mm 10mm 16mm 16mm 16mm