EHC SLIMJIM Installation & Technical Manual page 15

External Control Options:
The Slimjim boilers can be used with Volt Free or 240 volt control signals.
Volt Free control operation. Remove the link from the RP Connection (10) and connect your external volt
free control cables here. When this connection is "Closed" the boiler will fire, and when "Open" the boiler will
be in standby. (The control enable dip switch 4 must be in the OFF position as shown in the table below).
240 volt control operation. The link must be left in the RP Connections (10) and a live SW and Neutral
connected to the control terminals (11) To enable the feature you must select Dip 4 to ON. This is located at
the top LHS of the control Board. (The control enable dip switch 4 must be in the ON position as shown in
the table below).
Boiler Output Control.
You can control all SlimJim boilers power outputs in 3 stages by selecting dip switches settings as shown
in the table below.
e.g. If a 6kW is used and dip switch 1 on = 2kW Output – 6kW boiler dip switch 1&2 on = 4kW Output –
6kW boiler dip switch 1,2&3 on = 6kW Output.
Dip Switch Settings
Volt Free
Control Signals
240 Volt
Control Signals
GB-063C_f.615
1 POWER STAGE
VOLT FREE
1 POWER STAGE
240 VOLT
2 POWER STAGE
VOLT FREE
2 POWER STAGE
240 VOLT
15
3 POWER STAGE
VOLT FREE
3 POWER STAGE
240 VOLT