8 | SmithsEP.co.uk | Issue 001 - September 2018
Technical Documentation waterfan HEATER
v201803
13. ELECTRICAL CONNECTION DIAGRAMS
1. Connecting HEATER with no automatic control
*
The unit set does not consist of: a master switch, a fuse, a feeding cable
2. Connecting a few HEATER units with COMFORT panel, valves and actuators.
*
The unit set does not consist of: a master switch, a fuse, a feeding cable
*
One COMFORT panel may regulate up to 3 pcs of HEATER units
HEAT - thermostat sends signal for valve/actuator and fan, fan turns off when temperature in room is achieved,
valve/actuator closes water supply.
FAN – function not active, unit will not operate when FAN switch is selected
COOL – termostat sends signal only to fan, fan begins operation starting from temperature which is set on thermostat
(function used to air mixer HEATER MIX or for room ventilation in summer season)
Attention! You can use additional jumper on the contacts 4-5 of COMFORT Panel, in this case you may only use function of
changing speed of fan I-II-III and ON / OFF. The thermostat and switches HEAT / FAN / COOL remain not active.
Additional jumper on terminals 4-5 might be applied when for ex different (supplied by user) thermostat is used to control the
system.
Fan wiring description
U1
high
speed – brown
U2
middle
speed – grey
U3
low
speed – red
N neutral – blue
PE protection - yellow/green
