K1/2/3
Relay for backup-heater
L
Phase
N
Neutral
PE
Protective earth conductor
RTX-AL4
Switch board (interface)
RTX-EHS
Switch board (Backup heater)
Fig. 4-29 Connections on RTX-EHS circuit board
FA ROTEX HPSU compact 4 - 06/2015
X1
Terminal block for mains con-
nection to backup heater
X2_1 /2/3
Internal cabling
X3
Plug connection internal ca-
bling to RTX-AL4 circuit
board
4
x
Set-up and installation
4.4.16 Connection of the ROTEX room thermostat
This component has a separate manual attached,
including among other things instructions for installation
and operation.
Fig. 4-30 Connection with cabled room thermostat
(RT = ROTEX RKRTW,
Fig. 4-31 Connection with radio room thermostat
(RT-E = ROTEX RKRTR,
14 10 03)
14 10 04)
27
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