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INSTRUCTIONS FOR CONVERSION
Illustration
Procedure
Step 2:
(1) Remove set screws (2pcs) fixing the
Damper and pull the Damper out downward.
(2) Replace Damper with appropriate one
stamped LP or Nat.
Note: Damper slides up in between the
Burner and the Front Panel, housing the
Flame Rod and Electrode, leaving Gasket
exposed for sealing to the Manifold.
(3) Re-attach the two screws to secure the
Damper.
L P G
N A T
Gas type engraved mark
Gas type engraved mark
Step 3:
When reinstalling the new Manifold make sure the three fine thread screws w/ washers are used
at the Gas Control Valve, and that there are no wires pinched under the Manifold before any
screws are tightened. Once it has been confirmed there are no obstructions and the Manifold
can seal properly to the Gasket on the Burner as well as the Gas Valve O-rings then all screws
should be tightened firmly and evenly.
Step 4:
The DIP Switches in the illustration below can be adjusted without removing the Circuit Board.
Familiarize yourself with their location and position, then adjust number 1 to appropriate gas
type.
Damper setscrew (2 pcs)
Pull out downward
Damper setscrew (2 pcs)
Pull out downward
8
3
2
1
4
5
6
7
OFF
(The illustrated switch settings show the factory settings for the LPG as the gas type.)
To switch gas type (LPG or natural gas)
To fix to the minimum capacity level
To fix to the maximum capacity level
To change prolonged exhaust mode
(7 and 8 should be set depending on exhaust length before starting this conversion)
Summary of Contents for MWH-180
Page 60: ... 58 WIRING DIAGRAM ...
Page 61: ... 59 WIRING DIAGRAM ...
