47
Service setting manual
ENG
Param-
eter
Parameter name
Parameter description
Setting
range
Default
setting
S4.9
FUNCTION OF CIRCULA-
TION OUTPUT
Setting of alternative operation mode for d. h. w. circulation
output.
1- output is used for d. h. w. circulation
2- output is used d. h. w. warming with electric heater
3- output is used to control second stage of 2-stage burner
4- output is used to control boiler return temperature
(bypass pump), set also parameter S1.4=11 (for sensor T1)
or S1.5=12 (for sensor T8).
5- output is used to control primary boiler pump
CAUTION! Circulation output is R6 or R7 depends on
selected hydraulic scheme.
1- D. H. W.
CIRC.
2- EL.
HEATER
3- BURNER
2nd STAGE
4- BYPASS
PUMP
5- PRIMARY
PUMP
1
S4.10
REQ. D. H. W. TEMP.
BY WARMING WITH
COLLECTORS OR SOLID
FUEL BOILER
With this setting is set requested d. h. w. temperature if it is
being warmed with solid fuel boiler or solar collectors.
50 ÷ 90 °C
70
S4.11
MIN. AMBIENT TEMP.
FOR D. H. W. HEAT PUMP
D. h. w. is warmed only with heat pump if ambient tempera-
ture is above the set point temperature . D. h. w. warming
from central heating system will activate when the ambient
temperature drops bellow set-point temperature. Set
parameter S1.4=10 (for sensor T1) or S1.5=11 (for sensor
T8) to activate this function.
5 ÷ 30 °C
16
S4.12
D. H.W. WARMING PUMP
SWITCH-OFF DELAY
Setting of d. h. water warming pump switch-off delay after
d. h. w. was warmed.
0 ÷ 10 min
5
Service settings for boilers:
Param-
eter
Parameter name
Parameter description
Setting
range
Default
setting
S5.1
MAXIMUM BOILER TEM-
PERATURE
Setting of maximal liquid fuel boiler temperature.
60 ÷ 160 °C
90
S5.2
BURNER HYSTERESIS
AND OPERATION MODE
Setting of burner operation mode and hysteresis.
1- Relay is energized if there is no demand for heating,
regardless to heat source temperature. This way we block
operation of heat sources with independent controller. Such
control is required for Rotex boilers.
2- relay is energized when there is need for heating, regard-
less to heat source temperature. This way we activate
operation of independent heat sources, such as (wall hung
gas boiler or heat pump).
3 ÷ 20- burner control hysteresis.
1- SWITCH-
OFF
2- SWITCH-
ON
3- 20 °C-
HYSTER-
ESIS
8
S5.3
BOILER TEMPERATURE
INCREASE FOR CIRCUIT
1
Setting of boiler temperature increase in comparison with
calculated stand-pipe temperature for circuit 1.
0 ÷ 25 °C
5
S5.4
BOILER TEMPERATURE
INCREASE FOR CIRCUIT
2
Setting of boiler temperature increase in comparison
with calculated stand-pipe temperature for circuit 2.
0 ÷ 25 °C
5
S5.5
BOILER TEMP. INCREASE
FOR D. H. W. WARMING
Setting of boiler temperature increase in comparison with
requested d. h. w. temperature.
0 ÷ 25 °C
10
