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7 6
PHC
Note: The COSMO OHW products are
optional accessories for treatment of
heating water (fill and top-up water)
according to VDI 2035.
Flow
Return
8 . 9 . 4 S C H E M E 3 2 1 4
Pipe disconnector BA
DIN EN 1717
COSMO tank for a
hygienic storage of DHW Type CPSH
Cold water
Hot water
Circulation
In the following information the buffer tank(s) is/are designated as follows:
Storage tank 1: COSMO tank for a hygienic storage of DHW, type CPSH
Controller assignment:
R E L AY O U T P U T
Relay 1
Relay 2
Relay 3
Relay 4
Relay 5
Relay 6
Relay 7
Relay 7
Relay 7
HW
Service water
mixing valve
DET
= sensor terminal COSMO Multi 3
= relay terminal COSMO Multi 3
= storage tank sensor from the heat generator
Solar circuit pump primary - Mains connection
2x 3-way switch valve between
storage tank 1 - 2
(at zero current: storage tank 1 open)
Solar circuit pump secondary - Mains connection
COSMO RMS - mixing valve open
COSMO RMS - mixing valve closed
L'
L
Mains connection
min. 30 cm
*IT = intermediate
tank required for short
piping distances or large
collectors
N O T E
T E R M I N A L S
IT*
DET
DET
R1
R2
R3
R4
R5
R6
R7-A
R7-M
R7-R
L'
L
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