Install Instructions
&IGURE Propane gas venturi label identification (Black
label)
&IGURE Natural gas venturi label identification (White
label)
Part number 550-100-131/0715
– 13 –
™
GAS-FIRED WATER BOILER — Boiler Manual
Installing propane venturi —
)FBOILERISALREADYINSTALLED — You must turn
off electrical supply to the boiler and close the
external manual gas shut-off valve to isolate the
boiler during conversion. Allow the boiler to cool
if it has been operating.
Following conversion of an installed boiler, follow
all instructions in this manual to start up the boiler
and verify operation of the boiler and all system
components.
1. Propane venturi will have a black label identifying venturi
part number. See Figure 8, page 12 for correct part number..
2. Verify that the label on the propane venturi is correct for the
model size (see Figure 9 below).
-ODEL 0ART.UMBER 'AS4YPE 6ENTURI
EVG220 511-050-219 LPG 30
EVG299/300 511-050-220 LPG 34
EVG399 511-050-221 LPG 38
s Follow all instructions in proper order.
s Do not tamper with venturi. DO NOT change or modify
venturi in any way.
s Dispose of an uninstalled venturi; do not leave in the building.
s Caution – the gas supply shall be shut off prior to discon-
necting the electrical power, before proceeding with the
conversion.
s Whenever the venturi is removed, all gaskets must be replaced
with new gaskets.
Gas conversions (continued)
0IPESIZINGFORPROPANEGAS
1. Contact gas supplier to size pipes, tanks and 100% lockup
gas pressure regulator.
.ATURALAND0ROPANESUPPLYPRESSURE
1. Adjust propane supply regulator provided by gas supplier
between the pressure listed below:
2. Pressure required at gas valve inlet pressure port:
a. Maximum: 14” (356 mm) w.c. with no flow (lockup).
b. Minimum gas pressure, with gas flowing (verify during
boiler startup, while boiler is at high fire): 3½” (89 mm) w.c.
-ODEL 0ART.UMBER 'AS4YPE 6ENTURI
EVG220 511-050-212 NG 30
EVG299/300 511-050-215 NG 34
EVG399 511-050-216 NG 38
%6',0P/N 383-900-065 NG to Propane Gas Conversion Kit contents:
511-050-220 1
562-150-292 3
562-248-765 1
590-318-102 1
590-318-103 1
550-225-336 1
550-142-871 1
%6',0P/N 383-900-066 NG to Propane Gas Conversion Kit contents:
511-050-221 1
562-150-292 3
562-248-765 1
590-318-102 1
590-318-103 1
550-225-336 1
550-142-871 1
Liquefied Petroleum (Propane) to Natural Gas
conversion kits
Natural Gas to Liquefied Petroleum (Propane)
conversion kits (continued)
%6'.'
511-050-212 1
562-150-292 3
562-248-765 1
590-318-102 1
590-318-103 1
550-225-336 1
550-142-160 1
%6'.'
511-050-215 1
562-150-292 3
562-248-765 1
590-318-102 1
590-318-103 1
550-225-336 1
550-142-160 1
%6'.'
511-050-216 1
562-150-292 3
562-248-765 1
590-318-102 1
590-318-103 1
550-225-336 1
550-142-160 1