9
3 Technical description
3.1 Permissible applications
Weishaupt gas burner WG20.../1-C ZM-LN is suitable for the following applications:
• Installation on heat exchanger.
• Warm water boiler .
• Steam boiler and hot water boiler.
• Intermittent and continuous operation.
• Hot air generator.
Any discrepancy from the above described applications requires written confirmation
from Weishaupt Corporation.
To comply with specific NOx requirement, a minimum specific combustion chamber
dimensions must be followed:
• The burner must
only
be operated with the type of gas indicated on the burner plate.
• The burner must
only
be operated under permissible ambient conditions.
• The burner must
not
be used outdoor. It is only suitable for indoor operation.
• The gas supply pressure must
not
exceed the rated gas pressure indicated on the
rating plate.
• The burner must
not
be used outside of its capacity range.
Faults, which could affect the safe operation of the burner, should be rectified
immediately.
3.2 Nomenclature
WG20N/1-C ZM-LN
W
Type: Weishaupt burner
- G
Fuel: Gas
20
Burner size
N
N: Natural Gas
F: LPG
/1
Capacity range
-C
Revision
ZM
Version: sliding two stage or modulating
-LN
Version: LowNOx
3.3 Basic functions
• Automatic power gas burner for sliding two stage or modulating operation;
• Electronic ratio controller for all actuators;
• Operation and control via the operating interface.
Combustion manager
• Controlling the sequence of operation;
• Flame monitoring;
• Communicating with the stepping motors.
Ionization electrode
Monitors the flame during all phases of operation. If the flame signal does not
correspond to the sequence of operations, a safety lockout will be initiated.
Actuators
Stepping motors mounted on:
• Air damper;
• Gas butterfly valve.
These motors allow precise and direct regulation in conjunction with the electronic fuel –
air ratio controller.
Installation and Operating Instructions
Gas burner WG20.../1-C ZM-LN (W-FM 25)
83055116 • 1/2016-05
