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PIAZZA PATIO HEATER
29/10/10
Each Yunca PIAZZA All Seasons Patio Heater is factory set to the appropriate
operating pressure for the gas type with which it was factory equipped. If gas
pressure requires adjustment, or a gas type conversion is required, the operating
pressure can be tested at the test nipple on the side of the BM 733 control.
Operating pressure is adjusted at either the LPG or NG in line regulator.
Gas Type, Pressures and jet sizes appear on data plate on the Patio Heater.
Pressures
2.75kpa (LPG)
1.0kpa (NG).
Main jet sizes
1.6mm(LPG)
2.8mm(NG)
Pilot jet sizes
0.23mm(LPG)
0.35mm(NG)
Input
36MJ/hr
When running on Natural Gas the heater can be left mobile and connected to an
approved “bayonet” fitting, or may be permanently mounted and piped.
If the heater is being installed permanently connected to the supply, a manual
isolating valve should be installed as close as is practical to the appliance.
To get the maximum life from this product we suggest that it is covered when
stored.
The Piazza All Seasons Patio Heater uses the BM733 control valve, a functional
view of this is shown below.
Legend to functional diagram
1. Valve body, top section
6. Disk valve
11. Pressure test nipple
2. Valve body, bottom section 7. Flame failure device 12. Main gas inlet
3. Control knob
8. Pilot gas filter
13. Main gas outlet
4. Min. Setting screw
9. Piezo hammer
14. Pilot gas outlet
5. Max. Setting screw
10. Piezo crystal
15. Thermocouple
Connection.
