Installation guide

30 | Rinnai Continuous Flow Water Heating Specication Guide 02-13
Rinnai Innity internal ueing
The Rinnai Infinity internal flueing system is highly versatile and makes installation of an
internal water heater simple and convenient.
The flueing for internal water heaters is a coaxial design. It is manufactured from a stainless steel inner pipe to
discharge products of combustion and a thermoplastic outer pipe for air supply to the appliance. The water heater
is a room sealed appliance—is sealed from the room as it takes air for combustion from the outside and expels
products of combustion outside.
Each Rinnai Infinity water heater is flued individually.
Flue length
The chart below highlights the maximum flue length and number of bends. It also shows the difference between
a short and long flue. For flues over 2 m there is a DIP switch change required—refer Commissioning Checklist
supplied with the appliance. A DIP switch change is required as it increases the combustion speed to overcome
the additional friction losses.
Number of 90 Degree Bends
0 1 2 3 4
Flue Length (m)
1
2
3
4
5
6
7
9
11
13
15
Condensate drain
Excluding the Rinnai Infinity EFi250, a condensate drain is required for all vertical flue lengths over 1.5 m.
Multiple terminal installations
Short flue setting
Long flue setting
Maximum flue length
Min. 350 mm
Min. clearance 500 mm
Roof cowl
Min. 350 mm
Min. 350 mm