
6
ECO Built-In flue kit assembly and installation
The Metro ECO Built-In flue kit is comprised of 3x Metro ECO Extension
Kits and a Metro ECO Cowl. Each extension kit includes a 1200mm length
of 150mm flue pipe, 200mm and 250mm inner and outer liners required
for this installation.
1. Penetrate the roofing material on the flue centerline. Cut roof cladding
to the same diameter as the outer liner and bend up edges to create
both moisture stop and clearance.
2. Nog around the flue liner allowing a 25mm clearance. If you’re
installing the ø300mm ECO Option Kit liner, this can be directly fixed
to the timber framing at four points as shown in Diagram 5.
3. Secure the flue pipes together and ensure the flue seams are
staggered. The flue pipe sections must be fixed together at each joint
with at least three monel or stainless steel fasteners, and the crimped
ends of the flue inner and outer casings go to the top. The joints
of the flue pipes must be sealed with Pioneer fire cement. Prior to
installing the assembled flue pipe into the chimney cavity, take careful
note to ensure there are no overhead power lines in close proximity.
4. Lower the assembled flue pipe with the crimped end fitting into the
flue spigot of the firebox. With the flue pipe in position and sealed
with Pioneer fire cement into the flue stub, pilot drill through the hole
provided in the front of the flue stub into the stainless steel flue pipe
and secure with the M6 bolt and nut supplied in the plastic bag with
the Insert model firebox.
5. Lower the inner casing and engage it with the 200mm diameter inner
liner spigot, repeat this step with the outer casing and engage it with
the 250mm diameter outer casing spigot of the VZCC.
6. When the flue system is in its final position, the top of the outer casing
must be above the ridge line or roof as indicated in Diagram 6, as per
AS/NZS 2918:2001.
7. While still on the ground, assemble the ECO Cowl as follows;
- Take the stainless steel weather butterfly (A) so the angled sections
are facing up.
With both arms and angled sections of the stainless
steel weather butterfly (A) facing up, fit it into the stainless steel ECO
Cowl top (B), and secure in position through the holes provided with
stainless steel rivets.
Please note: Once fitted the weather butterfly will be slightly angled
within the cowl housing.
- Fit the ECO Cowl top (B) into the ECO Cowl housing (C). Push both
sections together until the swage ring on (B) rests completely on the
open end of the cowl housing (C). Drill through the two pre-punched
holes in the ECO Cowl housing and secure these two sections together
with stainless steel rivets.
The removable section of the ECO Cowl is now fully assembled.
8. Making your way back onto the roof, ensure the outer casing (F) is
‘level’ (+ or -10mm) with the top of the 150mm stainless steel flue
pipe. Using a suitable flashing, weather proof the joint where the
250mm diameter outer casing penetrates the roof. Ensure the flashing
used is compatible with the roofing material, and if fitting instructions
are supplied with the flashing, these must be adhered to.
CAUTION! Important Information
• As detailed within AS/NZS 2918:2001, it is not allowed to
mix flue systems or components from different suppliers or
manufacturers. The spigot adaptor supplied with the Metro
Mega Smart is Metro flue system components designed to
mate up with the Metro ECO Built-in flue kit. Only the Metro
ECO Built-In Flue Kit can be used for installation with the Metro
Mega Smart Built-In wood fire.
• The top of the flue must terminate a minimum of 4.6 metres
above the top of the floor protector, the ‘active’ 150mm
diameter stainless steel flue pipe must be fully encased with
both 200mm and 250mm diameter flue liners/casings over
its entire length, and the flue system and its installation must
comply with AS/NZS 2918:2001. Additional flue system
installation criteria is detailed below.
• As the flue system is to be enclosed in a structure replicating
a conventional masonry chimney, the base of the weather
cowl must be a minimum of 250mm above the top of the false
chimney. (Refer Diagrams 4 & 5)
Stage 3 - Installation of the Metro ECO Built-In flue kit
ECO Built-In flue kit components
(A) 1 x Stainless steel weather butterfly
(B) 1 x Stainless steel ECO Cowl top
(C) 1 x 420mm x 240mm diameter
stainless steel ECO Cowl housing
(D) 1 x 480mm long stainless steel flue
pipe extension with flashing cone
(E) 3 x 1200mm x 150mm diameter
stainless steel flue pipe
(F) 3 x 1200mm x 250mm diameter
outer casing
(G) 3 x 1200mm x 200mm diameter
inner casing
(F)
(G)
(E)
(D)
(C)
(A)
(B)
(G)(F) (E)