5
Flue installation
If the home is in a classified “clean air zone”, and dependent
on requirements/restrictions which may be imposed by your
local council, you may or may not be able to install a water
heating device. If in doubt consult your local Metro retailer.
Only Pioneer’s cast jacket wetback system should be fitted to
a Metro; alternative wetbacks will void the Metro’s emission
approvals and may seriously affect the performance of the
appliance and void the owner’s warranty.
Note; Wetback systems are not suitable for use in locations where
the water supply has lime content, lime build up inside the coil will
eventually block the coil causing the wetback to fail.
The wetback is fitted to the inside rear of the firebox, unless as
detailed in the points below. The connection pipe heights are
illustrated and detailed on the previous page 4. Please note:
• Wetback connections for the Ambience models are 140mm
left of the flue centre, facing the Metro/wall; the return pipe
connection is directly above the inlet connection.
• Reduced height pedestals are available for certain models
to reduce wetback connection heights.
• It is recommended the return pipe has a minimum rise of
1 in 12; performance will reduce as the distance to the
storage cylinder increases.
To fit the wetback proceed as follows:
1. Remove the rear panel of the Metro by removing the four
pozi drive screws. Remove the two pre-punched knockouts
from this panel.
2. Two further knockouts will be visible on the inner rear
heatshield; remove these also. Once these are removed
6mm nuts will be visible through the knockout holes.
3. Open the Metro’s door and locate two bolts securing the
pressed washers which are visible on the left hand side of
the firebox for both inlet and outlet connection points.
4. A further three bolt heads will also be visible on the inside
rear wall of the firebox; these are threaded into the 6mm
thick firebox. Remove all three.
5. Using the tube of sealant supplied with the wetback, apply
a liberal bead of sealant around both the two connection
pipes and also the outer circumference of the wetback
which will face and press against the inside rear wall of the
firebox. This will completely seal the wetback to the inside
rear wall of the fire on installation.
6. Fit the wetback into the firebox and carefully pass the
connection pipes through the holes in the rear of the
firebox. Securely attach the wetback using the three bolts
previously removed from the rear face of the firebox, fitting
them through the slots provided in the wetback’s jacket.
7. The wetback is now ready for connection to the storage
cylinder by a registered plumber.
WARNING!
Important Information
• Do not connect to an unvented hot water system.
• Install in accordance with AS 3500.4.1 or NZS 4603
and the appropriate requirements of the relevant
building code or codes.
It is recommended that all Metro freestanding wood fires be
installed with the energy efficient Metro ECO flue system which
comes complete with a detailed installation manual. This
installation manual must be presented with your application to
gain consent with your local council.
A copy of the installation manual can be downloaded from
www.metrofires.co.nz, or a copy can be obtained from your
Metro retailer. Any alternative flue system must comply with
and be installed as detailed in AS/NZS2918:2001, and a copy
of the installation manual must also be presented with your
application to gain consent with your local council.
All Metro’s require a 150mm diameter flue. Please note:
• All joints in the flue pipe must be sealed with Pioneer fire
cement (or similar) and riveted.
• The base of the flue pipe must be sealed into the outlet of
the Metro’s flue outlet. This is critical for optimum operation.
• Refer “Important Information” on page 2.
• The flue systems 150mm diameter flue pipe must terminate
a minimum of 4.6 metres above the top surface of the floor
protector.
Pioneer Double Flue Shield
All Metro’s have been tested with
a Pioneer double flue mounted
shield. For the Metro to be installed
with minimal clearances as the
clearance chart states, only the
Pioneer double mounted flue
shield can be used. All other
flue shields will invalidate the
installation.
The Metro can be installed without a
flue shield, if this is the case it needs to be installed as
AS/NZS2918:2001 stipulates.
ECO Flue System
Installation Manual
ECO Flue Systems
Freestanding Flue Systems
ECO Flue System Installation
Options ............
2
ECO Base Flue System & E
CO Option Kits
.... 3
ECO Base Flue System K
it Installation
........4-5
ECO Option Kit Installation
.............................
5
Insert Flue Systems
ECO Insert Flue Syst
em Kit Installation
.......6-7
ECO Flue System Minimum
Heights ..............
8
Wetbacks
