IDEAL EVOMAX 2 30, Installation And Servicing

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External wiring MUST be in accordance with the current I.E.T.
(BS7671) Wiring Regulations. For Ireland reference should be
made to the current ETCI rules for electrical installations.
The wiring diagrams illustrated in Section 2.27 covers examples
of the range of systems that may be used with this appliance.
For wiring external controls to the boiler, reference should be
made to the systems wiring diagram supplied by the relevant
manufacturer in conjunction with the connection diagram shown
in Section 2.27.
Difficulty in wiring should not arise, providing the following
directions are observed:
1. The appliance must be wired with a permanent live supply.
2. Four Multi Function Relay Volts free outputs are provided
that may be configured to control Pumps, Valves and other
devices over the voltage ranges specified: 24V DC to 230V
50Hz
An additional option kit may be added to control a Pump
using a modulating 0-10V DC control signal.
3. Input terminals are available for connecting a variety of
system controls for heating demand, and optionally for DHW
demand.
Heating demand can be controlled by:
• 230V SL1 and SL2 inputs where configured for two
heating circuits
• Two OpenTherm bus interfaces for the connection of
OpenTherm compatible room control kits. One per heating
circuit.
• Modulating sequencer kit
• an external BMS
• an outside temperature sensor.
• Optional Room Temperature sensor kit, one for each
heating circuit configured.
• Optional Header Temperature sensor where hydraulic
separation or a combined flow temperature control is
required
DHW demand can be controlled by:
• 230V programmer and/or cylinder thermostat
• tank sensor kit.
• One 2 channel OpenTherm interface for a Heating and a
DHW circuit.
The electrical supply and other inputs for the boiler can be
seen in Section 2.26.
Warning.
This appliance MUST be efficiently earthed.
A mains supply of 230V 50Hz is required. The supply wiring
MUST be suitable for mains voltage. Wiring should be 3 core
PVC insulated cable NOT LESS than 0.75mm
2
(24 x 0.2 mm)
and to BS. 6500, Table 16. The fuse rating should be 4A.
Wiring external to the boiler MUST be in accordance with
the current I.E.T. (BS7671) Wiring Regulations and any local
regulations. For Ireland reference should be made to the
current ETCI rules for electrical installations.
Connection should be made in a way that allows complete
isolation of the electrical supply - such as a double pole switch,
having a 3mm contact separation in both poles, or a plug and
unswitched socket serving only the boiler and system controls.
The means of isolation must be accessible to the user after
installation.
2.24 ELECTRICAL CONNECTIONS
2.25 EXTERNAL WIRING
30
Installation & Servicing
SECTION 2 - INSTALLATION
INST
ALLA
TION