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8
Chimney cavity vent installation
Cut a hole as detailed no higher than 230mm above the base of the fire as
illustrated in the diagram. The minimum open vent area of 14,400mm
2
with
a maximum height of 230mm must be cut through the chimney.
Suitable precautions will be necessary to prevent rodents and debris from
entering or restricting the air vent. If a grilled vent cover is used, please
ensure the minimum vent area is maintained through the grille itself.
It is the responsibility of the installer to ensure that the requirements of
New Zealand Building Code Clause E2 (External Moisture) are complied with.
Pioneer masonry vent cover kit.
Installation instructions:
• Cut a hole through the masonry chimney 300mm wide x 133mm high.
Please note that this is an external dimension and the base of the hole
must slope up at least a 1/6 gradient as illustrated.
• Cut a weather seal groove 25mm above the vent hole at a minimum
depth of 18mm x 400mm long (centred with the air vent)
• Place silicon around the top and side flanges of the vent cover and
position into the hole and bead off around the perimeter
• Fill the weather seal groove with silicon and embed the weather strip
fully into the silicon to ensure weather-tightness.
Chimney vent requirements
230mm M
aximum heigh
t
A
bo
ve base of fir
e cabinet
55mm
133mm
25mm
10
Stainless Steel
Masonry Vent
Cover
Weather Strip
Silicon seal
Anti vermin
mesh
Ultra Insert Wood fire
Chimney cavity venting requirements
Maximum vent
height / minimum
open vent area of
144cm 2 / 14,400mm 2
230mm
• An air vent is required on the rear face of the masonry cavity
enclosure. The top of this vent must be no higher than 230mm
above the floor and must have an overall minimum surface area of
14,400mm
2
.
• Suitable precautions will be necessary to prevent rodents and
debris from entering or restricting the air vent. If a grilled vent
cover is used, please ensure the minimum vent area is maintained
through the grille itself.
Note: Silicon, chimney vent cover and weather strip are not included as
they are supplied by the installer. Pioneer manufacture a stainless steel
masonry vent cover kit to complete installation. Details for the specific
vent dimensions and Pioneer kit installation are detailed below.
CAUTION!
Important Information
Pioneer masonry vent cover
Pioneer weather strip
Weather seal groove 400mm long