INSTRUCTIONS FOR INSTALLATION
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Note:
Power cables from Ø6 mm to Ø20 mm must be connected from left side of boiler and protective cover (see 1
above) must be secured, power cables in excess of Ø20 mm must be connected from bottom side of boiler (see 4
above) using provided plastic inducer for electric cable.
Ensure that the wires are securely fixed.
The appliance must be connected to mains electricity and tested according to current IEE regulations. An NICEIC
inspection and completion certificate must be issued.
All exposed pipework must be earthed according to current IEE regulations
3.6. Connecting external controls
Removable connectors for room thermostat, external pumps and temperature probes are located on connections
plate as shown (right). Available connectors are dependent on boiler type and boiler options.
Terminals OUTDOOR TEMP. and DOMESTIC WATER are not used in M version of Termo boilers.
Power supply to control unit:
L - Live feed to external unit
N – neutral to external unit
PE – earth to external unit
3 – switched live from external unit for DHW
4 – switched live from external unit for space heating
Note: For more details see selected appendix
Connection plate
3.6.1 Connect room thermostat/programmer
When connecting the room thermostat, follow thermostat manufacturer’s instructions to connect to Termo boiler.
The boiler is supplied with a fixed link between L and 4. If an external control device (room thermostat and/or
programmer)is used, remove this link. The boiler’s terminals 3, 4 and L N PE (power supply for control unit) are
for connection to room thermostat/programmer.
3.6.2. Connecting external pump on TERMO RS boilers
TERMO RS boilers do not have inbuilt central heating pump and pump for domestic water cylinder. Empty
terminals on connection plate are provided to fit external pumps.
Terminal CH PUMP is provided for central heating pump. Connect pump L, N, PE wires to the appropriate
connection ports.
Terminal HW PUMP is provided for domestic water cylinder pump. Connect pump L, N, PE wires to the
appropriate connection ports.
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