Neutraliser Tank & Drain; Important Considerations For Neutraliser Drain Pipe; Length & Changes Of Direction; Installation Method - Rinnai Infinity 26 Operation & Installation Manual

The REU-E series water heaters (Infinity Enviro 16 and Infinity Enviro 26) generate condensate continuously at a
rate of up to 5 litres per hour as a by-product of highly efficient gas burner system.
This condensate has been neutralised by pre-fitted Condensate Neutraliser Kit.
The configuration of drain lines MUST be in accordance with local regulatory requirements and the requirements
of AS/NZS3500.4.

IMPORTANT CONSIDERATIONS FOR NEUTRALISER DRAIN PIPE

The content of AS/NZS 3500 'Temperature / Pressure Relief and Expansion Control Valve Drain
Lines' has been used as a guide in preparing these considerations.
NOTE
B
C
Remove cap from condensate drain outlet
Water heater drain outlet connection, R½" (15 mm) BSP male. Condensate / Neutraliser drain outlet
A
connection, 1/2" (15mm) BSP male nylon (Note: the black plastic shipping cap MUST BE removed from the
condensate / neutraliser drain outlet prior to water heater operation).
PE R½" BSP (15 mm) female to barbed irrigation system connector (13 – 19mm) or equivalent plastic fitting.
B
Drain pipe and fittings to match item
C
Continuous fall (of at least 2°) from water heater to discharge point. Lengths and bends in accordance with
D
'Length & Changes Of Direction' table below.
Suitable points of discharge are deemed to be drains, sewers or pits. DO NOT discharge onto electrical
E
connections, earth stakes, copper pipes, concrete paths or into a pond.
Length & Changes Of Direction
Maximum length and changes of direction greater than
45° should be as follows:

INSTALLATION METHOD

(a) There shall be no tap, valve or other restrictions in any line.
(b) Each line shall fall continuously from the valve to the approved point of discharge.
(c) Drain lines shall not discharge into a storage water heater safe tray.
(d) The end of the drain line shall be:
(i) not lower than 200 mm or higher than 300 mm above an unpaved surface; or
(ii) not lower than 75 mm or higher than 300 mm above a gravel pit not less than 100 mm in diameter in a
paved surface.
(e) Where discharging over a tundish or gully trap, drain lines shall have an air gap of a size at least twice the
diameter of the drain line.
Rinnai
NEUTRALISER TANK & DRAIN
A
.
B
A
Lengths and changes of direction
Max length (Metres)
Max changes of direction >45°
23
D
2°
9
3
E
8 7 6
4 5 6
HW_HD_CF OIM