Note: Propane conversion venturis have an additional yellow label to identify use for propane
41
CHAPTER 7
Table 3 - Propane Conversion Venturis
Model Venturi Diameter Top injector Bottom Injector Label Colour Part No.
110 Solo 22mm LP
Ø
2.9 mm LP
Ø
2.65 mm Black EXRKIT08
155 Solo 24mm LP
Ø
3.15 mm LP
Ø
2.95 mm Black EXRKIT10
199 Solo 26mm LP
Ø
3.45 mm LP
Ø
3.25 mm Black EXRKIT12
155 Combi 24mm LP
Ø
3.15 mm LP
Ø
2.95 mm Black EXRKIT10
199 Combi 26mm LP
Ø
3.45 mm LP
Ø
3.25 mm Black EXRKIT12
CHAPTER 7 - GAS PIPING
7.3. Propane Gas
7.3.1 Pipe Sizing
• The unit was shipped with a propane
conversion kit which is located on the top
of the unit in the instructions packet. This
kit includes all the necessary parts and
instruction to perform the conversion from
natural to propane gas. If this conversion
kit is missing, please contact Ideal Technical
Support for missing kit before installing unit.
• Prior to start up, ensure the unit is set to fire
propane. Check the rating label for the type of
fuel. Check the venturi for propane conversion
label. If there is a conflict or doubt on the
burner configuration, remove the venturi and
check for proper propane gas orifice sizing
on venturi labeling. Refer to Section 7.3.2 for
orifice sizes. See Fig. 26 and 27 on page 42 and
Fig. 28 on page 43 for venturi location. Refer to
Propane Conversion Instructions for proper
removal and replacement of the venturi.
• Failure to ensure proper burner setup can
result in substantial property damage,
serious injury, or death.
• Operating a natural gas EXALT boiler on
propane will create excessive and dangerious
carbon monoxide levels which could cause
serious injury, or death.
Contact the local propane gas supplier for recommended
sizing of piping, tanks and 100% lockup gas regulator.
WARNING
7.3.2 Supply Pressure Requirements
1. Adjust the propane supply regulator provided by
the gas supplier for 13”w.c. maximum pressure
2. Pressure required at the gas valve inlet supply
pressure port:
• Maximum 13”w.c. at ow or no ow conditions
to the burner
• Minimum 8”w.c. during ow conditions to the
burner. Must be veried during start up and
with all other gas appliances operating within
the building.
DO NOT adjust or attempt to measure gas valve
outlet pressure. The gas valve is factory-set for
the correct outlet pressure. This setting is suitable
for natural gas and propane and requires no field
adjustment. Attempts by the installer to adjust or
measure the gas valve outlet pressure can result in
damage to the valve, causing substantial property
damage, serious injury, or death.
•
The propane gas venturi assembly must never be
modified or replaced with a different assembly. See
the below chart for the full specification. Failure to
use the required propane gas venturi assembly can
result in substantial property damage, serious injury
or death.
WARNING
WARNING
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