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3.3 KEY TO COMPONENTS
1 Incoming water isolating valve.
2 Connection block.
3 ON / OFF switch.
4 DHW safety thermal limit switch.
5 Main contactor.
6 DHW electronic PCB
7 Anti-electrolysis DHW hoses.
8 DHW resistance.
9 DHW Temperature sensor location.
10 Insulated tank 50L.
11 Automatic purge.
12 Heating expansion vessel 6L.
13 DHW expansion vessel 2L.
14 Circulation pump.
15 Insulated heating header tank.
16 Heating resistance.
17 Heating 3 bar relief valve.
18 Heating safety thermal limit switch.
19 Main electronic PCB.
20 Pressure gauge.
21 Heating flow detector.
22 Controls card.
23 Heating filling valve.
24 DHW 7 bar relief valve.
3.4 SAFETY DEVICES
Safe operation under various conditions is ensured by the
following controls fitted inside the boiler:
Water flow switch that monitors water flow in the
o
heating system and will prevent operation in case of a
blockage, if the system flow rate is below the permitted
level, error E3 will appear. Installation of a system by-
pass may be necessary (see 7.3 Heating system flow
switch – E3 Error).
Hot water high limit safety thermostat will prevent
o
operation if the temperature exceeds 80ºC. It requires
re-setting manually.
Heating system high limit safety thermostat will prevent
o
operation if the temperature exceeds 100ºC. It requires
re-setting manually.
Hot water pressure relief valve will discharge to relieve
o
excess pressure at 7 bar. (Requires piping to a safe
external discharge point.)
Heating system pressure relief valve will discharge to
o
relieve excess pressure at 3 bar. (Requires piping to a
safe external discharge point.)
4 INSTALATION
IMPORTANT PRE- INSTALLATION POINTS
In order to ensure the successful installation and
operation of your Gabarron boiler, please consider
the following points before commencing.
SITING THE BOILER
Wall and fixings must b
WARNING
support the total weight; MATTIRA CMXi boiler
when full is 120kg.
Allow sufficient clearance and access for operating,
maintenance and repair work.
Boiler must be protected from any water, moisture or
dampness.
Where installations are in a bathroom, the installation must
comply with the relevant electrical regulations.
Boiler electrical protection rating is IP20/IP2X. This boiler is
not designed to be installed in the open air.
The boiler must be installed in the upright position.
ELECTRICAL POWER SUPPLY & WIRING
WARNING Before carrying out any work inside
the boiler and obtaining access to terminals, all
supply circuits must be disconnected.
WARNING Earth the appliance. If the appliance is
not earthed, it may hold voltage if a defect occurs.
The cable, MCB and RCD must be of sufficient capacity to
carry the required load.
i
Boiler is supplied set at maximum output and must be
adjusted to suit the incoming supply before being
switched on. (See 5.2 LIMITING BOILER MAXIMUM
OUTPUT).
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suitable to
e
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