56
Service setting manual
ENG
D. h. w. warming with solar collectors
The basic operation of the solar collectors system is determined by switch-on difference,
switch-off difference and minimum temperature of solar collectors - parameters P6.1, P6.2
and P6.3.
D. h. w. is warmed up to the requested temperature, set with parameter S4.10.
If d. h. w is warmed and the temperature of solar collectors exceeds the maximum temper-
ature of solar collectors - parameter S6.1, d. h. w. warming is allowed up to the maximum
d. h. w temperature - parameter S4.3.
D. h. w. warming is switched off unconditionally, if the d. h. w. temperature exceeds the
maximum temperature - parameter S4.3, or if solar collectors temperature exceeds the
maximum temperature - parameter S6.3.
When d. h. w. is warmed with solar collectors, you can set the liquid fuel boiler operation
mode with parameter S6.6:
S6.6= -1, simultaneous operation of both heat sources.
S6.3= 0 ÷ 600, the boiler will be switches on with set delay after deactivation of the solar
system. Parameter value sets minutes of delay.
D. h. w. warming with an electric heater
You can reprogram the output for d. h. w. warming with boiler (R5) to control the electric
heater for d. h. w. warming by setting the parameter S4.1=2.
D. h. w. will be warmed up to the requested temperature according to the time program for
d. h. w. warming.
You can also program the output for the circulation pump (R6 or R7) to control the electric
heater for d. h. w. warming by setting the parameter S4.9=2 .
D. h. w. will be warmed up to the requested temperature according to the time program for
d. h. w. warming.
To control the electric heating body, a power relay and a thermal fuse must
be connected.
Priority of d. h. w. warming over room heating
With parameters P4.2 and P4.3 you can set the priority of d. h. w. warming over room heat-
ing. By direct heating circuit is suggested to set priority to d. h. w. warming.
Return cooling of domestic hot water (Recooling)
If d. h. w. exceeds with the maximum temperature - parameter S4.10, a cooling of the d. h.
w. into the boiler or into the solar collectors can be activated - parameter S4.4.
Pump-kick function for solar collector
Pump-kick function for solar collector pump is set with parameter S6.8=1. If collector
temperature is higher as minimum collector temperature, the pump is activated each 15
minutes for 10 seconds. This way a realistic collector temperature is acquired. This setting
is used in case if collector sensor isn’t mounted directly into the collector body.
