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7. FLUE INSTRUCTIONS AND CLEARANCES
INTERNAL – SP SERIES
7.1
7.1.1 General
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All flues shall be installed in accordance with AS/NZS 5601.
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Horizontal flues shall have a minimum rise of 20mm per 1m run.
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Horizontal flues terminating on a wall shall be at least 300mm above ground level.
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An external flue terminal clearance to an opening in a building shall be no less than 1000mm in the vertical
direction and 300mm in the horizontal direction.
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Systems with both vertical and horizontal flue runs should be treated as all horizontal.
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One 45º bend is equivalent to one half 90º bend (i.e. two 45º bends = one 90º bend).
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Provide adequate support to flue sections (e.g. saddles / strapping).
7.1.2 SP4 and SP5 Models – 100mm Non-corrosive Metal Flue.
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Requires a 100mm round single or twin wall non-corrosive metal flue, suitably terminated.
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All flues shall have a bolted flue sleeve connection to allow for repairs and/or removal of the appliance.
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Twin Wall flue – maximum flue length of 6m.
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Single Wall flue – maximum flue length of 2m.
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Up to four 90º elbows are permitted with the same length requirements specified above.
7.1.3 SP6 Universal Models – 100mm Drainage Waste Vent (DWV) Flue
Level Invert Taper (LIT)
All SP6 internal model heaters are supplied with an LIT fitting in the controls area beneath the lid. The LIT must be
installed to the heater flue outlet. The flue outlet connection can be found behind an installer instruction label.
The (field supplied) flue is connected to the unit via a 100mm drain waste vent pipe (DWV to AS/NZS 1260) and
must be secured to the LIT with the supplied 100mm pipe clamp.
Install the LIT as follows:
a. Place the supplied 65mm pipe clamp loosely over the LIT.
b. Gently install the LIT onto the flue pipe ensuring that:
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the rubber is not pinched or folded;
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the LIT is in the correct orientation (Diagram 17); and
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the LIT is pushed onto the flue pipe until it is firmly against the cabinet.
c. Secure the LIT firmly in place with the 65mm pipe clamp.
Diagram 16. LIT
The DWV flue shall be installed in accordance with the following:
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All flue joints shall be adequately sealed to prevent condensate leakage.
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Ensure there is continual fall back to the flue outlet on the heater from flue termination point.
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Flue shall be removable from the heater to allow for repairs and/or removal of the appliance.
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Flat side of the LIT (not tapered side) must be positioned so it is always the lowest part of the fitting or the
closest point to ground.
Rinnai
65mm Pipe Clamp
Flue Outlet
26
LIT
Ducted Gas Heater IM
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