Part number 550-100-260/0520
15
ECO
®
Tec
G
AS
-
FIRED
WATER
BOILER
–
80/110/150/199
B
OILER
M
ANUAL
Liquefied Petroleum (Propane) to Natural Gas
conversion kits
ECO Tec
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511-050-230 F
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550-225-336 D (E
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ECO Tec
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511-050-231 F
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550-225-336 D (E
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ECO Tec
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511-050-232 F
1
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3
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&IGURE
Propane gas venturi label identification
(Black label)
&IGURE
Natural gas venturi label identification
(White label)
Installing propane venturi —
1. Propane venturi will have a black label identifying venturi
part number. See Figure 10 for correct part number.
2. Verify that the label on the propane venturi is correct for
the model size (see Figure 10 below).
3. Shut off the gas supply prior to disconnecting the electrical
power, before proceeding with the conversion.
4. If the jacket front door was not already removed, remove it.
5. Locate the blower and venturi (see Figure 12).
"OILER
-ODEL
0ART.UMBER
'AS4YPE 6ENTURI
80/110
511-050-233
LPG
20
150
511-050-234
LPG
26
199
511-050-235
LPG
28
"OILER
-ODEL
0ART.UMBER
'AS
4YPE
6ENTURI
80/110
511-050-230
NG
22
150
511-050-231
NG
26
199
511-050-232
NG
28
Gas conversions
(continued)
&IGURE
Blower, gas valve, venturi assembly
,%'%.$
for Figures 12, 13, 14, 15, 16 and 17
Air Silencer
Air silencer clip
Venturi
Blower
Gas valve
Gas pipe
Swivel nut
Fiber Washer
O-Ring
LP Orifice
6. Gently open up the "U" part of the silencer clip and remove
from venturi / silencer assembly, see Figures 12 and 13.
1
4
2
7
3
6
5
&IGURE
Air silencer removal
1
2
2
3