Flue Length, Bends & Appliance Settings; Flue Terminals; Multiple Roof Terminal Installations; Multiple Wall Terminal Installations - Rinnai HD210i Installation Manual

WARNINGS & IMPORTANT INFORMATION
FLUE LENGTH, BENDS & APPLIANCE SETTINGS
Flue installations can consist of both horizontal and vertical runs with the following limitations.
The maximum length of any flue run is NOT to exceed 42 metres. The number of 90° bends
MUST NOT be more than fifteen. The ratio of metres of flue to the number of 90° bends MUST
be in accordance with that described in Table 1.
CAUTION
Length Metres* 12
90° Bends 15
* For flue runs of up to 12 metres in length a maximum of fifteen 90° bends is allowed.
Combustion is factory set and in normal circumstances adjustment is NOT required. Refer to the REU-N series
commissioning instructions and or service manual for further information.

FLUE TERMINALS

The flue gases can reach high temperatures. The flue terminal is to terminate in a location NOT
to cause a nuisance, in accordance with AS/NZS 5601.
WARNING
Ensure the flue is fully supported independently of the appliance by use of suitable clips or
brackets, in accordance with AS/NZS 5601. Appropriate standoff brackets are supplied with each
FFPPROOFCOWL and FFPPPIPE1000.
The terminal clearances in AS/NZS 5601 do not apply to the Rinnai internal continuous flow water
heaters when installed side by side. Refer to the images in Fig. 4 for all the relevant spacing and
clearance dimensions for both vertical and horizontal multiple terminal installations.

Multiple Roof Terminal Installations

The minimum horizontal separation between terminal
centres is NOT to be less than 350mm. See Fig.4.

Multiple Wall Terminal Installations

The minimum horizontal separation between terminal
centres is NOT to be less than 350mm, and the
vertical separation is NOT to be less than 570mm.
See Fig.4.
It is recommended that the horizontal
separation between the appliance flue
centres be maintained to the termination
NOTE
point (i.e. HD210 flue centres are 500mm).

UV Roof Protectors

FFPPROOFCOWL comes with three black injection
moulded UV protective pipe sections. These must be
fitted to protect any exposed white flue pipe parts from
UV damage. Click fit adaptor and protectors into the
underside of the flue shroud see Fig 5. If necessary
trim the female end of a protector for best fit. Ensure
any unprotected white pipe is painted with a suitable
UV resistant coating.
It is CRITICAL that the UV protector be
installed on the outside of a decktite and
NOT on the inside. A protector installed
IMPORTANT
on the inside of a decktite will cause
weather sealing to become an issue.
Rinnai
Table 1. REU N series, flue pipe lengths & changes of direction
14 16 18 20
14 13 12 11
22 24 26 28 30
10 9 8 7 6
350 FFPPROOFCOWL
175
225
FFPPROOFCOWL
FLUE SHROUD
UV ADAPTER
Male end up and
female end down
UV PROTECTOR
Male end up and
female end down
6
32 34 36 38 40
5 4 3 2 1
FFPPWALLKIT
220
350
Fig. 4
Ensure the UV
protectors are installed
outside of the decktite,
none of the white pipe
should be left exposed
Trim the female end of the
UV PROTECTOR if required
Fig. 5
HW_CF_FFPP_FIM
42
0
350