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PIAZZA PATIO HEATER
10/04/07
Each Yunca PIAZZA All Seasons Patio Heater is factory set to the appropriate
operating pressure for the gas type that it is 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.
When running on Natural Gas the heater can be left mobile and connected to an
approved “bayonet” fitting, or permanently mounted and piped.
To get the maximum life from this product we suggest that it is stored in a
covered position.
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.
The 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.
