Wolf FGB-28 - Page 38

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17. Parameter description
If spread control ΔT is enabled in parameter H37, the set spread value specied in
H38 applies. Via modication of the pump speed, the spread between ow and return
is regulated within the speed limits set in H16 and H17.
Parameter H38
Set spread, pump control
Factory setting: see table
Setting range: 1 to 30 °C
Individual setting:_____
In heating mode, the burner is run at reduced output for the set time following burner
start.
Parameter H39
Time, soft start
Factory setting: see table
Setting range: 0 to 10 min
Individual setting:_____
The condensing boiler is matched to the heating system by selecting from 3 precon-
gured system congurations under parameter H40. This parameter inuences the
function of the internal appliance pump.
Parameter H40
System conguration
Systemconguration01
Direct heating circuit on the condensing boiler
• Burner is activated following demand from the direct heating circuit
• Internal appliance pump is enabled as a heating circuit pump
• Thermostatic boiler control, set value specied by heating circuit
For setting the type of pump speed control in heating mode and with cascade opera-
tion.
0: Constant = xed pump speed (H17)
1: Spread ΔT = speed control between H16 and H17 to achieve ow/return
temperature spread (H38)
Parameter H37
Pump control type
Factory setting: see table
Factory setting: 0 to 1
Individual setting:_____
Factory setting: see table
Factory setting: 1 to 3
Individual setting:_____
dhc