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1.
The drain line MUST NOT discharge onto electrical connections, earth stakes, copper
pipes, concrete paths or into a pond.
2. The point of discharge from each drain line shall be located so that the release of
condensate does not cause a nuisance, is readily discernable and incurs no risk of
damage to the building.
Condensate drain lines from multiple water heaters may be joined together provided they
conform with the 'Installation requirements' on page 9.
Where individual water heaters are installed in a multi-story building, the condensate drain
line may discharge into a common stack, subject to the following:
(a) The discharge from the common stack is to a tundish, having a discharge line that is
not less than the size of the common stack, directly connected to a fixture trap, and
installed in connection with any adjacent soil or waste stack.
(b) The discharge point of the common stack is such that any discharge is readily visible
and not cause any nuisance.
(c) The common stack is vented by extending the pipe upwards above the roof level.
The drain line from any tundish shall not be less than DN20 or less than one size larger
than that of the largest drain line discharging into the tundish. Tundish drain lines shall
comply with the’Installation requirements’ on page 9.
In areas where water pipes are prone to freezing, the drain pipe from any valve shall be
insulated and not exceed 300mm in length. It shall discharge into a tundish through an
air gap of not less than 75mm and not more than 150mm measured from the outlet of the
drain pipe to the rim of the tundish.
Installation
Interconnection of condensate drain lines
Common stack discharge
Tundish drain lines
Areas subject to freezing
In view of (1) and (2), suitable points of discharge are deemed to be drains or sewers.
3.
There shall be no tap, valve, or other restrictions in any line.
4.
The drain line shall fall continuously to the approved point of discharge.
5.
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.
PLEASE NOTE
The warranty will not cover any failures or operating difficulties due to the following:
• improper installation and maintenance (including but not limited to):
• condensate damage or any other consequential loss either directly or indirectly
• removal of the neutralizer
• not replacing the neutralizer at the end of it’s life
