Siemens AVS75.39 Series User Manual page 193

Electrical connections
QX extension module
Siemens
Building Technologies
When selecting a function, the extension module's inputs and outputs are assigned
functions according to the following table:
Connection terminal on the
module
Multifunctional
Heating circuit 1
Heating circuit 2
Heating circuit 3
Return temp controller
Solar DHW
Primary contr/system pump
DHW primary controller
Instantaneous water heater
Return controller cascade
Cooling circuit 1
Heating circ/cooling circ 1
Solid fuel boiler
* Freely selectable in QX.../BX...
FS = DHW flow switch; AVS75.390 = H2; AVS75.370 = H21
Defines usage of the Qx relay outputs.
Line no.
Mod 1 Mod 2 Mod 3
7301 7376 7451
7302 7377 7452
7303 7378 7453
Refer to the function descriptions, operating line "Relay output QX1".
User manual RVS43.345
The settings in detail
QX21 QX22 QX23
* * *
Y1 Y2 Q2
Y5 Y6 Q6
Y11 Y12 Q20
Y7 Y8 Q1
* * Q5
Y19 Y20 Q14
Y31 Y32 Q3
Y33 Y34 Q34
Y25 Y26 Q25
Y23 Y24 Q24
Y1 Y2 Q2
Y9 Y10 Q10
Operating line
Relay output QX21 module 1, 2, 3
Relay output QX22 module 1, 2, 3
Relay output QX23 module 1, 2, 3
None ¦ Circulating pump Q4 ¦ El imm heater DHW K6 ¦
Collector pump Q5 ¦ Cons circuit pump VK1 Q15 ¦ Boiler
pump Q1 ¦ Bypass pump Q12 ¦ Alarm output K10 ¦ 2nd pump
speed HC1 Q21 ¦ 2nd pump speed HC2 Q22 ¦ 2nd pump
speed HC3 Q23 ¦ Heat circuit pump HC3 Q20 ¦ Cons circuit
pump VK2 Q18 ¦ System pump Q14 ¦ Heat gen shutoff valve
Y4 ¦ Solid fuel boiler pump Q10 ¦ Time program 5 K13 ¦
Buffer return valve Y15 ¦ Solar pump ext exch K9 ¦ Solar ctrl
elem buffer K8 ¦ Solar ctrl elem swi pool K18 ¦ Collector
pump 2 Q16 ¦ Swimming pool pump Q19 ¦ Flue gas relay
K17 ¦ Assisted firing fan K30 ¦ Cascade pump Q25 ¦ St tank
transfer pump Q11 ¦ DHW mixing pump Q35 ¦ DHW interm
circ pump Q33 ¦ Heat request K27 ¦ Refrigeration request
K28 ¦ Air dehumidifier K29 ¦ Div valve HC/CC1 Y21 ¦ Heat
circuit pump HC1 Q2 ¦ Heat circuit pump HC2 Q6 ¦ DHW ctrl
elem Q3 ¦ Instant WH ctrl elem Q34 ¦ Suppl source control
K32 ¦ Overtemperature protection K11
BX21 BX22 H2/H21
* * *
B1 * *
B12 * *
B14 * *
B7 * *
B6 B31 *
B15 * *
B35 * *
B38 B39 FS
B70 B10 *
B16 * *
B1 * *
B72 B22
CE1U2354en_021
2013-09-02
H22
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