39
b
Booster
0
0
0
Not applicable
C
Step-by-step modulation
1
1
1
0= step-by-step modulation off during CH operation
1= step-by-step modulation on during CH operation
2= Power control by Open Therm room thermostat enabled
c
Minimum rpm CH
30
30
20
Settings reach 20 – 50%
c.
Activation external power saving switch
input
40
40
40
Setting range 0,15 – (value parameter c. )
0 = external power saving switch activated
Other values : Min. capacity modulating pump.
d
Minimum rpm hot water
30
30
20
Settings reach 20 – 50%
E
Min. leaving water temperature at OT
(OpenTherm) or RF thermostat
40
40
40
Settings reach 10 – 60°C
E.
Reaction OT and RF room thermostat
1
1
1
0= do not respond to hot water request if requested temperature is
lower than the set value par. E
1= respond to hot water request with minimum leaving water
temperature limited to set value par. E
2= respond to hot water request with maximum leaving water
temperature (on/off function)
F
Start rpm CH
70
70
50
Settings reach 40 – 99% of the set maximum rpm
F.
Start rpm hot water
70
70
50
Settings reach 40 – 99% of the set maximum rpm
h
Max. rpm fan (* 100 rpm)
44
45
65
Settings reach 40 – 50 (RHOB12AAV1H, RHOB18AAV1H and
60 – 70 (RHOB42AAV1H)
This parameter can be used to set the maximum rpm
L
Legionella prevention
0
0
0
0 = not active
1 = legionella prevention once per week
2 = legionella prevention day to day
n
Regulated temperature during boiler
operation (Ta)
80
80
85
Setting reach 60°C - 90°C
n.
Hot water temperature at Comfort/Eco
0
0
0
Not active
O.
Wait time CH request response
0
0
0
Settings reach 0 – 15 minutes
o
Waiting time CH operation after hot water
operation
0
0
0
Settings reach 0 – 15 minutes
o.
Number of eco days
3
3
3
Not active
P
Anti-recycling time during CH operation
5
5
5
Minimum switch off time on CH operation
Can be set to 0 – 15 minutes
P.
Reference value hot water
0
0
0
Not active
q
Summer mode
0
0
0
0 = Summer mode deactivated
1 = Summer mode to be activated by button
(code in display : Su)
2 = Summer mode to be activated by button
(code in display : So)
3 = Summer mode to be activated by button
(code in display : Et)
r
Heating curve coefficient
0
0
0
Not active
Summary of Contents for ROTEX GW-20 H12
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