Weil-McLain Evergreen EVG 220 Manual page 17

®
gas
Gas conversions
Figure 18 Installer conversion label
LP to Natural gas conversion
1. Follow the same instructions as LP conversion, except using
the correct Natural gas conversion kit, See Figure 8, page 12 .
2. If LP gas was already selected in the boiler control, the gas
type parameter will need to be adjusted. In the contractor
menu, under the Boiler Settings menu, adjust the "LP Gas"
setting to "NO".
3. Turn throttle screw clockwise until it stops, and then turn
counter-clockwise number of turns per Figure 19. Figure 19
is intended to make rough adjustment to gas valve to allow
the boiler to fire. They are NOT intended to replace proper
adjustment of combustion valves per instructions on page 91
of this manual.
Figure 19
Throttle screw adjustment
Boiler Model
EVG 220 NG
EVG 299/300 NG
EVG 399 NG
The door must be in place during op-
eration.
DO NOT operate the boiler with the
jacket door removed except for inspection and
testing as directed in this manual.
Part number 550-100-131/0120
-
fired water boiler
(continued)
Number of Turns
1 ½
3 ¾
3
— 220/299/300/399 Boiler Manual
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