Weishaupt WL20/2-C Z User Manual

Installation and operating instruction
Oil burner WL20/2-C Z
3 Product description
83307702 1/2019-04 La
12-80
3.3.4 Program sequence
Pre-purge
At heat demand, the burner motor starts after the startup waiting time (TW) has
elapsed.
The actuator drives to air damper setting Stage1.
The combustion chamber is pre-purged.
Ignition
Ignition starts with the pre-purge time(TV).
Fuel release
Following the pre-purge time(TV) stage1solenoid valve (K11) opens and releases
the fuel.
Safety time
With fuel release, safety time (TS) and post-ignition time (TNZ) start.
The flame signal must be present within the safety time (TS).
Operation
The burner is in operation.
The combustion manager monitors the flame signal via the flame sensor.
Depending on the regulator demand for stage 2, stage 2 solenoid valve (K13)
opens or closes.
The residence time partial load(TVK) prevents cycling between stage1 and stage2.
Post-purge
If there is no longer a heat demand, the solenoid valves close and stop the fuel
supply.
Post-purge time(TN) begins.
Following the post-purge time(TN) the burner motor switches off.
The actuator drives to the Closed position.

Weishaupt WL20/2-C Z Specifications

General

Brand	Weishaupt
Model	WL20/2-C Z
Category	Burner
Language	English