Installation and operating instruction
Oil condensing boiler WTC-OB 18-B
6 Operation
83311002 1/2018-03 La
56-132
6.11 Commissioning programs (parameter 73)
General information:
Parameter
73
is activated for only 8 minutes after switching on the appliance. If
necessary switch on the appliance again,
all programs can be terminated by pressing the [reset] button or via
OFF
. Af-
terwards parameter
73
can no longer be selected. Only after switching on
again can the parameter be selected again,
the programs are terminated if faults or warning occur.
The following programs are available:
Program
Description
Pr1
Vent system on the water side
Pr2
Purge oil lines
Pr3
Set stage 1
Pr5
Set stage 2
Pr7
Switch on fan
Pr8
Release combustion chamber pressure for storing
OFF
Exit program
Pr1
: vent system on the water side
The circulation pumps and the three-way valve are activated alternatively in order to
vent the system.
Pr2
: purge oil lines
If an electrical anti syphon valve is fitted to the oil storage tank, the valve can be
opened by program
Pr2
during manual purging of the oil supply.
Pr3
: set stage 1
Burner starts in accordance with the programme sequence and drives to stage 1.
Pr5
: set stage 2
Burner starts in accordance with the programme sequence and drives to stage 2.
Pr7
: switch on fan
Program is used to cool down the burner prior to servicing.