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Page 2 of 12 

Mezzo Hanging Patio Heater 

29/10/10 

CONTENTS

 

 

Introduction 

Pg. 2 

Installation 

Pg. 3 

Operating Instructions 

Pg. 7 

Servicing 

Pg. 7 

Trouble Shooting  

Pg. 9 

Warranty Information 

Pg. 10 

Packing Parts 

Pg. 11 

Warranty Registration 

Pg. 12 

 

INTRODUCTION 

 

 
Congratulations on purchasing your YUNCA MEZZO HANGING PATIO HEATER. 
 

CAUTION: This unit must be installed  so as it is not exposed to moisture. 

This  unit  is  designed  to  be  mounted  to  a  ceiling  and  out  of  the  rain.  The 
operation is controlled by electronic 24 volt Microprocessor based direct spark 
ignition control. The heater is started by turning on a switch. 

 

WARNING:

 

The Gas supply shall be fitted and commissioned by a registered Gas Fitter. 

WARNING:

 

The  Electrical  wiring  shall  be  completed  by  an  Qualified  Electrician  to 

applicable Local Body and/or National standards.

  

WARNING:

 The controller uses voltages of shock hazard potential.

 

 

WARNING:

 

Only authorised service technicians should undertake any repairs or 

maintenance on this product. 

It is recommended that the Heater has an annual maintenance check to ensure 
its long term correct operation. 

 

WARNING:

 

Do not store or use aerosols or other flammable materials near this 

appliance.

 

 

WARNING

:

 The Yunca MEZZO Hanging Patio Heater is an unflued gas appliance 

so adequate ventilation must always be provided to ensure safe and efficient use. 
 
Each Yunca MEZZO Hanging Patio Heater is factory set to the appropriate operating 
pressure for the gas type. Operating pressure is adjusted at either the LPG or NG in 
line regulator. 
 
This instruction booklet should stay with the appliance, and is for the reference of the 
user and service person.  
 
Please fill out and return the warranty registration card promptly (back page). 

 

Summary of Contents for MEZZO

Page 1: ...Page 1 of 12 Mezzo Hanging Patio Heater 29 10 10 MEZZO Hanging Patio Heater August 2010 OPERATIONS MAINTENANCE WARRANTY INFORMATION www yunca co nz ...

Page 2: ...d Electrician to applicable Local Body and or National standards WARNING The controller uses voltages of shock hazard potential WARNING Only authorised service technicians should undertake any repairs or maintenance on this product It is recommended that the Heater has an annual maintenance check to ensure its long term correct operation WARNING Do not store or use aerosols or other flammable mate...

Page 3: ...on Control Gas Types LPG and NG Custom prepurge and interpurge timings Pressures 2 75Kpa LPG 1 0Kpa NG Multiple tries Main Jet Sizes 1 7mm LPG 2 8mm NG Easily Assembled Main Burner Worgas Stainless Steel Atmospheric System Diagnostic LED Input Power 18 30 VAC Flame sense test pins Gas Valve 2 0A 24VAC Stainless Heater assembly 0 7µA Maximum Powder coated Frame Flame Failure Response Time 0 8 sec ...

Page 4: ... Refer to Table 1 The following parts are NOT supplied M8 Bolts x8 for attaching Mounting Plates to support M8 Washers x8 for attaching Mounting Plates to support M8 Nuts x8 for attaching Mounting Plates to support Gas Pipe and fittings Wire and fittings for the 240 volt supply 1mm Sq wiring and fittings from the Transformer to the connection box at the vertical channel 24 volt side Maximum length...

Page 5: ...ing Box shall be positioned to allow future maintenance and access Care is required in removing the cut outs for the wire Install the electrical wiring for the 240V supply to transformer and 24Volt system from the 24 volt side of the transformer to where the Connect Box will be mounted positioning the control switch and or thermostat in required position 24 Volt system maximum length 50 metres 1sq...

Page 6: ... while aligning the studs with the holes Place the second washer on followed by the wing nut and tighten firmly Check the Burner is vertical Position the four dome locks over the Dome and using the bolts firmly attach the Dome to the vertical channel Fig 4 Fig 4 TESTING WARNING Initial operation must be done by a qualified Gas fitter or service technician Gas supply pressure is tested from a test ...

Page 7: ...lem or abnormal noise it should be immediately turned off The MEZZO Hanging Patio heater should be checked and tested by authorised service technician before being used SERVICING CAUTION Only authorised service technicians should undertake any repairs or Maintenance on this product To access components there are covers that can be removed from the perforated stainless steel cylinder that surrounds...

Page 8: ... purge delay begins Following the pre purge period the gas valve is energised and sparks commence for the trial for ignition period When flame is detected during the trial for ignition sparks are shutoff immediately and the gas valve remains energised The thermostat and main burner flame are constantly monitored to assure the system continues to operate properly When the thermostat is satisfied an...

Page 9: ...e LED will flash on for second then off for second during a fault condition The pause between fault codes is 3 seconds Proper Electrode Location Proper location of the electrode assembly is important for optimum system performance The electrode assembly be located so that the tips are inside the flame envelope and about inch 1cm above the base of the flame Fig 6 CAUTIONS 1 Ceramic insulators shoul...

Page 10: ... Warranty The Yunca MEZZO Hanging Patio Heater is covered by a limited two year Warranty against defects in materials and workmanship All gas components including control burner pilot assembly tubing regulator and hose are warranted for a period of one year from date of purchase Damage caused by neglect improper use acts of God theft or any other indirect incidental cause are not covered by this w...

Page 11: ...ective Dome Horizontal Assy Vertical Channel x2 one with Cable Ties 6568PH Mounting Plate x2 Burner Assembly Insulating Box with Transformer and fuse Carrier M6 x 20mm Bolts x12 6mm Washers x12 M6 Nuts x12 0036C M6 X 26MM ALLOY FLAT WASHER DOME x6 0007D M6 S S WING NUT FOR DOME X3 Installation Instructions DATE SIGNED ...

Page 12: ...ectrician Phone Yunca Gas PO Box 500 Dunedin 9054 Ph 03 488 4342 Email yuncagas southnet co nz Web Site www yunca co nz Cut along this line This section must be returned within 10 days of purchase YUNCA Mezzo Hanging Patio Heater WARRANTY REGISTRATION Serial No Gas type Purchase Date Purchaser s Name Purchaser s Address City Post Code Telephone Where Purchased Installed By Date Electrician Phone R...

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