OEG KSF-Pro Mode D'emploi page 58

CoNTRoL oF ThE hEAT PUMP
Heat pump is main (primary) heat source in schemes 119, 120, 122, 122b, 122c and 122d.
Heat pump can be also activated as a primary heat sources in schemes 101b, 104b, 104d,
104e, 109, 109b, 110, 110b, 110c, 111, 116, 116b, 116c in 121, 123b, 123c, 123d, 123e.
Heat pump is activated with parameter S4.9=6, which is used to set alternative operation
mode of d. h. w circulation pump output. Existing heat source (oil boiler, gas boiler or elec-
tric boiler) is controlled as auxiliary (secondary) heat source.
Operation mode of heat pump and secondary heat source (oil boiler, electric boiler) is set
with parameters S6.17, S6.18 and S6.19.
Parameter S6.17 defines minimum outdoor temperature, below which the operation of heat
pump is blocked.
Parameter S6.17 defines outdoor temperature for bivalent operation mode of heat pump.
When outdoor temperature drops below setted temperature, auxiliary (secondary) heat
source is activated if heat pump cannot supply requested temperature.
Auxiliary heat source is activated with delay, when the outdoor temperature is lower as
temperature for monovalent operation (S6.19) and higher as temperature for bivalent op-
eration (S6.17). Delay time depends on temperature deficit and setting of parameter S5.15.
Parameter S6.19 defines minimum outdoor temperature above which the operation of
auxiliary heat source is blocked.
PUMP FoR RETURN-PIPE TEMPERATURE INCREASE (ByPASS PUMP)
This option is available for classic liquid fuel boilers and solid fuel boilers with no connec-
tion to heat accumulator. Output (R0 or R9) can be used to control the bypass pump to
increase boiler return temperature. Such operation mode is set with parameter S1.11=4
(R0) or S1.12=5 (R9). Install the T1 or T8 sensor in the boiler return-pipe before the by-
pass connection and set parameter S1.4=9 (for sensor T1) or S1.5=12 (for sensor T8). If
return-pipe temperature drops below the temperature set by parameter S5.14, the pump is
switched on.
DoMESTIC hoT wATER
D. h. w. warming with liquid fuel boiler
Set the required d. h. w. temperature for the inactive time program interval with parameter
P4. If boiler temperature exceeds the maximum boiler temperature (parameter S5.1), the d.
h. w. will be warmed up to the maximum temperature set with parameter S4.3.
D. h. w. warming pump is switched off with delay. The delay time is set with parameter
S4.12.
Service setting manual
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