Connection To Gas Supply - Yunca Gas LEEDZ INBUILT Operations, Maintenance & Warranty Information

CONNECTING THE HEATER TO A GAS SUPPLY.
Burn only the fuel for which the heater is equipped.
The YUNCA LEEDZ may be shipped from the factory equipped to burn either natural gas, L.P.G. or
propane. The data plate affixed to the back of the heater specifies the gas type, which the heater is
factory equipped for. Fuel Conversion Kits, No. LZ-A16 for natural gas, Kit No. LZ-A15 for L.P.G. or kit
No. LZ-A17 for propane is available from your YUNCA agents.
See Appendix: A for instructions on field conversion from one gas to another. A suitably qualified
person can only do this conversion.
Thermostat:
The thermostat-sensing bulb is located at the bottom front right hand corner of the heater. It should be
placed either inside or outside of the heater in such a place that it can accurately sense room
temperature, whilst still being unobtrusive.
Gas connection:
The gas inlet is located behind the left fascia panel. The inlet is a female 3/8" BSP access is shown in
the following pages.
A separate gas isolation valve should be installed immediately up stream of the connection to the
appliance.
If the heater is intended to run on natural gas, the supplied in line regulator should also be installed in
the gas line.
WARNING: To stop pipe compounds entering the gas line, do not apply sealing compounds to the first
two threads at the tip of any gas connection. All joints should be tested for leaks before operating the
heater.
GAS PRESSURE REQUIREMENTS
Correct gas pressure and the use of a properly sized gas supply line is essential for the safe and
efficient performance of this appliance. The inlet and outlet pressures at the control must be tested on
installation following the procedure over page.
Note: Improper gas pressure will affect heater performance flame colour or cause pilot malfunction.
Natural Gas:
Minimum inlet pressure
Maximum inlet pressure 5.0 KPa (20"w.g.) With supplied in line regulator fitted.
Operating pressure
L.P.G.
Minimum inlet pressure
Maximum inlet pressure 3.5 KPa (14"w.g.)
Operating pressure
CAUTION: Do not use this heater if any part has been under water or exposed to moisture causing
corrosion.
A Qualified service technician should inspect the heater and replace any part of the gas system that
has been under water.
09-06-01
1.25 KPa (5"w.g.)
1.0kPa (4"w.g.)
2.75 KPa (11"w.g.)
2.5 KPa (10"w.g.)
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