Revised 03-11-10
YUNCA FUZiON FEBRUARY 2010
Page 7 of 19
CONNECTING THE HEATER TO A GAS SUPPLY
Burn ONLY the fuel for which the heater is equipped.
The
YUNCA
FUZiON
(Fuzzy Logic control) is shipped from the factory equipped to burn either
Natural Gas or L.P.G.
N.B. The Yunca FUZiON (Fuzzy Logic control)
Heater cannot be
converted from LPG to NG, or vice versa
. The data plate affixed to the back of the heater
specifies the gas type that the heater is factory equipped for.
Gas connection:
The gas inlet is located at the back right hand corner of the heater. The inlet thread is to a male 3/8”
BSP
CAUTION: A separate gas isolation valve must be installed immediately up stream of the
connection to the appliance.
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.
Ensure all gas pipes to the heater are purged by blasted air to remove any material or filings
that may block valves and jets.
All joints should be tested for leaks before operating the heater.
TO CHECK GAS PRESSURE:
1
Remove door assembly (refer page 11)
2
Remove front hearth and control panel assembly. Three screws hold the hearth and
two screws hold the control panel locked under sides.
3
Test point can be seen on the left side of the control box.
4
Slacken test point screw and check pressures.
5
Re-tighten test point screw.
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 pressures at the control must be tested on
installation using the following the settings.
Note: Improper gas pressure will affect heater performance flame colour or cause pilot
malfunction.
Natural Gas:
Input
33MJ
Static Minimum inlet operating pressure
2.0 kPa (8"w.g.)
Minimum inlet operating pressure
1.0 kPa (4"w.g.)
Maximum inlet pressure
5.0 kPa (20"w.g.)
L.P.G.:
Input
28MJ
Static Minimum inlet operating pressure
2.75 kPa (11"w.g.)
Minimum Inlet operating pressure
2.50 kPa (10”w.g.)
Maximum inlet pressure
3.50 kPa (14"w.g.)
CAUTION
: Do not use this heater if any part has been water damaged 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 water damaged.