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Edition:03/21_public
Manual Storage Heater Technotherm
Factory-fitted components
TR
Charge control
TB
Safety thermostat
RS
Control resistor
R1..6
Heating elements
V1.V2
Fans (TT20&30 only one)
IRT 24 Z Integral Room Thermostat
PE grounding
Accessories
K1
Thermal Relay
TBZ
Safety thermostat for DAE
RZ
Day Acting Element (DAE)
SE
Fan switch
SZ
DAE switct
Terminals
L1,L2,L3 Charge Voltage
A1/Z1
from central
A2/Z2
charge control
LH
DAE
LE
discharge fan(s)
SH
Thermal Relay
L line voltage for IR
Important! Do NOT connect Terminal 13, 14 and 15 to
power supply. Terminal 14 only when an external
Thermostat (accessory) is being use.
All power cables must be disconnected before accessing
the connection terminals.