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CONNECTING THE HEATER TO A GAS SUPPLY
Burn ONLY the fuel for which the heater is equipped.
The YUNCA entis (Fuzzy Logic control) is shipped from the factory equipped to burn either
Natural Gas or L.P.G. The Yunca entis (Fuzzy Logic control) Heater cannot be converted
from LPG to NG, or vice versa. The data plate affixed to the top of the fan housing 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.
A separate gas isolation valve should 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 fascia assembly (page 5)
2
Test point can be seen on the left side of the control box.
3
Slacken test point screw and check pressures.
4
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 and outlet 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
Static Minimum inlet operating pressure
Minimum inlet operating pressure
Maximum inlet pressure
L.P.G.:
Input
Static Minimum inlet operating pressure
Minimum Inlet operating pressure
Maximum inlet pressure
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.
Revised 22-08-07
Yunca entis instal Aug07
33MJ
2.0 kPa (8"w.g.)
1.0 kPa (4"w.g.)
5.0 kPa (20"w.g.)
28MJ
2.75 kPa (11"w.g.)
2.50 kPa (10"w.g.)
3.50 kPa (14"w.g.)
Page 4 of 23
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