Hermann Supermaster 28 E - Electric Diagram for SUPERMASTER 23 E - 28 E

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Regulation and servicing
for the technician
C Pump
CA Ignition and flame control unit
EA Ignition electrode
ER Flame sense electrode
F1 Fuse (2 A)
MOD Modulatore
PSA Low water pressure switch
(contact NA closed = in pressure)
SR Heating NTC sensor
SS DHW storage NTC sensor
TA Voltage-free Contact for Room Thermostat
or Cronothermostat
(for trade) (safety extra low voltage SELV)
TF Flue thermostat
TS Safety thermostat
VD Motorized deviating valve
(SE) Arrangement for external
sensor (optional)
Electric diagram for
SUPERMASTER 23 E - 28 E
EVZ1/2/3… Electrovalve
zone 1/2/3…
AUX1/2/3… Auxiliary contact for
EVZ1/2/3…
TAZ1/2/3… 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