Part number 550-100-305/0916
15
AquaBalance
TM
W
ALL
M
OUNT
GAS
-
FIRED
WATER
BOILER
— C
OMBI
Boiler Manual
4 Converting boiler to propane
continued
4HEJACKETDOORMUSTBEINPLACEDURING
OPERATION
DO NOT operate the boiler with
the jacket door removed except for inspection
and testing as directed in this manual.
Inspect the gas pipe fitting connections on
the gas valve and new venturi (Item 3, Fig-
ure 13, page 14) check the seal of the connec-
tions. Failure to comply will cause a gas leak,
resulting in severe personal injury or death.
Do not check for gas leaks with an open flame
— use bubble test. Failure to use bubble test or
check for gas leaks can cause severe personal
injury, death or substantial property damage.
6. Reinstall control module, reinstall screw to hold control
module securely in place
7. Reinstall jacket door, and secure with two (2) screws.
Mandatory control changes for fuel
conversion
8. Adjust parameter for the type of gas:
a. Put the boiler in standby mode.
b. Press the DHW buttons details 1 and 2 - Figure 64, page 50
for 10 seconds: the display shows “b01“ flashing.
c. Press the DHW buttons Figure 64, page 50 details 1 and 2
- to set parameter 00 (for use with natural gas) or 01
(for use with LP).
d. Press the Heating (+) button to scroll to Parameter “b04”.
e. Press DHW (-) to reduce the Maximum Blower
Speed,
from 205 to 200 for the WMB-155C boiler,
see Figure 103, page 82.
f. Press the (+) button to scroll to Parameter “b05”.
g. Repeat Step “e” above according to your boiler size.
h. Press the Heating (+) button to scroll to Parameter
“b06”.
i. Press DHW (+) to increase the Minimum Blower
Speed,
from 39 to 40 for the WMB-155C boiler,
see Figure 103, page 82.
j. Press the DHW buttons details 1 and 2 -
Figure 64, page 50 for 10 seconds.
k. The boiler will return to standby mode.
9. Turn on gas by opening gas valve, check for leaks and continue
boiler start up and adjustments, staring on page 63.
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The valve could be
damaged by manometer fluid contamination.
Failure to comply could result in severe personal
injury, death or substantial property damage.
Perform Boiler Manual start-up
Follow all instructions in Boiler Manual to start-up
the boiler after converting for propane. Because the
boiler has been changed,
you must verify correct
operation, including checking combustion with
test instruments both at high fire and low fire as
described in the Boiler Manual, pages 69, 70 & 71
.
Check the correct ignition sequence of the boiler
after the conversion, as in page 71.
Failure to comply could result in severe personal
injury, death or substantial property damage.
Reinstall boiler jacket front door
Replace boiler jacket front door after servicing. The
boiler front door must be securely fastened to the
boiler frame to prevent boiler from drawing air
from inside the boiler room. This is particularly
important if the boiler is located in the same
room as other appliances. Failure to keep the door
securely fastened could result in severe personal
injury or death.
Apply installer conversion label
1.
Converting to propane firing: After installation is complete,
attach the propane conversion label (from kit) next to the
boiler rating label.
2. Contractor/installer is responsible for completing the in-
formation required on label (provided in kit) and attaching
installer conversion label next to the boiler rating label.
Figure 17
'ASPIPEREASSEMBLEDTO,0VENTURIlTTING
Figure 18
)NSTALLERCONVERSIONLABEL
A
3
5
