Rinnai MP2200 Operation & Installation Manual page 9

Multiple Appliance Installations
Dimension 'h' in reference to Horizontal Terminal
Clearances (Extract from AS/NZS 5601) on page 6
does not apply when multiple Rinnai external water
heaters of the same model are installed on the same
vertical face with flue terminals at the same height.
Under these conditions appliances can abut each other
as shown. The total gas consumption of all appliances
applies when determining other clearances.
For all other appliance dimensions, refer to "Appliance
Dimensions" on page 13.
Rinnai internal models described in this manual must use the Co-Axial Rinnai FFU flue components.
The use of non Rinnai FFU flue components may result in a dangerous situation and violates
IMPORTANT
regulations.
The FFU flue system must be installed in accordance with the 'FFU Flue Installation Manual'
which is provided with the FFU flue terminal components FFWALLTERM or FFROOFCOWL.
Installations can consist of both horizontal and vertical runs to a maximum length of 9 metres
and with a maximum of three 90° bends.
Basic methods of installation
There are four basic flue installation methods available,
these are:
Direct Horizontal
1
Extended Horizontal
2
Vertical
3
Combination Vertical / Horizontal
4
Short and Long Flue Length Settings
Short Flue
When the flue length does not exceed 1.5m then: Dip
switch 1 of SW1 is to be switched to the 'ON' position.
Long Flue
When the flue length exceeds 1.5m the: Dip switch 1 of
SW1 is to be switched to the 'OFF' position (This increases
the combustion speed to overcome the additional friction
loses).
Multiple Terminal Installations
The terminal clearances stated in AS/NZS 5601 do not
apply to the Rinnai internal continuous flow water heaters
when they are installed side by side.
AGA certification allows for a horizontal separation of 160
mm for roof terminals and 270 mm for wall terminals.
Rinnai
1
2
Dipswitches
SW1
Dipswitches
SW2
350
225
160
9
INTERNAL FLUEING
4
3
Flue Length Dip Switch Settings
FFU (Internal) Models Only FFU (Internal) Models Only
Short Flue: Total flue Extended Flue: Total flue
length less than 1.5 metres length 1.5 metres or greater
OFF ON OFF ON
SW1 SW1
FFROOFCOWL
FFROOFCOWL
270
350
Commercial Manifold Pack OIM
FFWPLATE