35
iN401 - iN501 Natural
Gas
to
Propane
Conversion
May
2019
-
Revision
00
11. Natural Gas to Propane Conversion
SAFETY
INSTRUCTIONS
A qualified service technician MUST make the required
changes to convert the water heater from Natural Gas
to Propane.
11.1 General Information
Note:
This
conversion
process
also
requires
the
CO
2
levels to be adjusted. Refer to “11. Natural Gas to Propane
Conversion” on page 35 for instructions.
Before converting the unit for propane, verify the current
gas inlet pressure meets the recommended pressure and
record it in the space below.
Propane Static Gas Pressure
Parameters
Specifications
Minimum Static Gas Pressure
8”
W.C.
(non-corrugated,
black
iron)
Recommended
Gas
Pressure
11”
W.C.
Maximum Static Gas Pressure
13”
W.C.
Current
Static
Propane
Gas
Pressure
___________W.C.
Date
___________________
Note:
This
conversion
process
also
requires
the
CO
2
levels
to be adjusted. Refer to “10. Adjusting CO2 Level” on page
32 for instructions.
11.2 Conversion Procedure
1. Follow these steps before repositioning the DIP switches.
a. Turn the water heater OFF using the display screen.
b. Place the circuit breaker for the water heater at the
main electrical panel in the OFF position. Verify there
is no power to the unit(s).
c. Open the front door and locate the main circuit board.
Note:
There are two control boards in the iN401/iN501.
d. Locate DIP Switch 1 on each of the two circuit boards.
e. Move each DIP switch downward into the Propane
position.
SW1
Propane
DIP Switch Settings
(Réglages des commutateurs DIP)
Natural Gas
(Gaz naturel)
ON
ON
