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58
13.4
Up to 3 heating circuits can be demanded via room thermostats or time program. A
room thermostat (ON / OFF) can be connected via the inputs X26, X27 and X28. The
230V supply of the pumps is provided via output Z17 (HK) (boiler temperature> 60°
C).Via the terminals Z38, Z39 and Z40, a PWM signal for controlling the individual
heating circuits is output. The PWM signal can be set more or less powerful in the first
code level
DHW for the accumulator works via sensor input Z20 (DHW) and pump output Z16
(UW). Residual heat is dissipated via Z16 (UW) to the warm water boiler. The pump
mode cannot be selected.
Hydraulic diagram version C:
Heat consumers are shown symbolically and can be substituted by others!
If there is more than one heating circuit, PWM pumps or the external relay box must
be used so that individual control of the pumps is possible.
Installation Manual
Version C
Z21
13 Controller for heating circuits and DHW
Z26
Z27
TI
TI
TI
TI
Z40
Z39
Z38
Z17
Z17
Z17
TI
TI
Z28
TI
TI
TI
TI
Z16
55
50
Z20
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