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Yunca Gas NZS 7421-1990 Installation Instructions

Multi-fuel freestanding burner
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MULTI-FUEL FREESTANDING BURNER
A.
Yunca recommends that competent trades persons carry out all installations (e.g. NZHHA
registered installer) to obtain maximum performance and safe, efficient heating.
B.
A permit is required and we suggest you check with your local building inspectors as by-laws
can vary from area to area. This model is not clean air approved.
Also notify your Insurance Company that a space heater has been installed.
C.

Floor Protector

1. Must extend at least 300mm in front of closed door.
2. Must extend at least 150mm on each side of heater.
3. Must be constructed of non combustible materials giving heat resistance equal to
concrete or brick at least 50mm thick.
D.

Seismic restraint

Heater must be restrained from seismic movement as required by AS/NZS 2918:2001.
E.

Manufacturers recommended minimum clearances from combustible walls.

APPLIED RESEARCH tested to NZS 7421-1990
Rear Clearance (with YUNCA flue guard fitted)
Side Clearance (with YUNCA flue guard fitted)
Corner Clearance (with YUNCA flue guard fitted)
Rear Clearance (without YUNCA flue guard fitted)
Side Clearance (without YUNCA flue guard fitted)
Corner Clearance (without YUNCA flue guard fitted)
Minimum Hearth clearance (from door aperture)
F.

YUNCA Flue Kit (

1. 4.2m x 150mm stainless steel flue.
2. 2.4m x 250mm galvanised liner.
3. 1 x ceiling tile.
Please Note: All joints must be sealed with flue sealing compound. Use stainless steel
screws or rivets to join the flue pipe (three equally spaced places at each joint). The first
length of flue pipe must be screwed to flue spigot. The required minimum flue termination
height is 4.6 m above the floor protector.
G.
Flue Mounted Shield (Flue Guard) Kit: FIG A
1.
1 x 1200mm length back guard plus a 900mm adjustable extension.
2.
1 x 1200mm length perforated front guard
Multi FS - Jan_1997 (Revised Apr_2016).doc
A division of Terry Young Ltd, New Zealand
INSTALLATION INSTRUCTIONS for
JANUARY 1997 (Revised April 2016)
(Referred to as the "new model" multi in our spare parts guide)
NO LONGER IN PRODUCTION
TESTED TO NZS 7421-1990
complies to AS/NZS 2918:2001, Appendix F):
www.yunca.co.nz
Clearance (FIG D)
200mm
700mm
200mm
700mm
800mm
200mm
300mm
FIG A, B, E
4. 1 x insulation boundary shield.
5. 2 x spider brackets.
6. 1 x weather cap & cowl.
Page 1 of 4

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Summary of Contents for Yunca Gas NZS 7421-1990

  • Page 1 50mm thick. Seismic restraint Heater must be restrained from seismic movement as required by AS/NZS 2918:2001. Manufacturers recommended minimum clearances from combustible walls. APPLIED RESEARCH tested to NZS 7421-1990 Clearance (FIG D) Rear Clearance (with YUNCA flue guard fitted) 200mm...
  • Page 2 600mm ABOVE RIDGE LINE (MIN) FIG A: TYPICAL FLUE INSTALLATION FIG B ENLARGEMENT OF CEI LI NG ASSEMBLY 2 5 m m m in . BET WEEN LI NER & ANY TI MBER LINER POSITIONED BY SPIDER BRACKETS. TOP/BOTTOM SUPPORT ANGLES TIMBER RAILS INSULATION BOUNDARY SHIELD CEI LI NG...
  • Page 3 FIG C: DIMENSIONS FIG D: HEATER POSITIONS Fig D drawings continued on Page 4. Multi FS - Jan_1997 (Revised Apr_2016).doc www.yunca.co.nz Page 3 of 4...

  • Page 4: Important Information

    IMPORTANT INFORMATION FIG D: Continued. A. The appliance and flue system shall be installed in compliance with AS/NZS 2918:2001 and the appropriate requirements of the relevant building code or codes. B. Appliances installed in accordance with this standard shall comply with the requirements of AS/NZS 4013 where required by the regulatory authority i.e.

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