Electrical Diagram - Hermann Eura Condensing Installation, User And Servicing Instructions

Electrical diagram

C
C Pump
EA Ignition Electrode
EC Automatic filling device
ER Flame Detector Electrode
FP Priority flowstat
L Electrical Phase (Live)
V Fan + Hall Sensor
(V1 = supply, V2= speed checking)
N Electrical Neutral
PSA Loss of water switch
SB Domestic minitank temperature sensor
SE External temperature probe
SR Flow temperature sensor
Regulation and servicing
46
MULTIZONE HEATING
(same temperature
range)
WIRING
EXAMPLE
TA Room Thermostat unique zone or main zone
(take off the jumper to install)
TA2 Room Thermostat secondary zone
(it works only if the TA is installed)
TP Inlet for Safety Thermostat Floor Standing
Systems (take off the jumper to install)
TS High temperature safety thermostat
TSR Safety thermostat on system return
(manual reset)
VD Three way valve
VM Motorised mixing valve
EVZ 1/2/3
AUX 1/2/3
TAZ 1/2/3
Note: if optional Remote Control is installed,
multizone heating wiring is different. Refer to
multizone heating diagram supplied with
Remote Control kit.
Electro-valve zone 1/2/3
Auxiliary for EVZ 1/2/3
Room thermostat for zone 1/2/3
Colours
abbreviations:
BK Black
BN Brown
BU Blue
GN Green
GNYE Green-Yellow
GY Grey
OG Orange
RD Red
VT Violet
WH White