Interconnection Of Condensate / Neutraliser Drain Lines; Common Stack Discharge; Tundish Drain Lines; Areas Subject To Freezing - Rinnai Infinity 26 Operation & Installation Manual

NEUTRALISER TANK & DRAIN

Interconnection Of Condensate / Neutraliser Drain Lines

Condensate / Neutraliser drain lines from multiple water heaters may be joined together provided they conform
with the requirements of the "Installation Method" on page 23.

Common Stack Discharge

Where individual water heaters are installed in a multi-storey building, the condensate / neutraliser drain lines 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.

Tundish Drain Lines

The drain line from any tundish shall be not less than DN 20 or less than one size larger than that of the largest
drain line discharging into the tundish. Tundish drain lines shall comply with the requirements of the "Installation
Method" on page 23.

Areas Subject To Freezing

In areas where water pipes are prone to freezing, the drain pipe from any valve shall be insulated and not exceed
300 mm in length. It shall discharge into a tundish through an air gap of not less than 75 mm and not more than
150 mm measured from the outlet of the drain pipe to the rim of the tundish.
Rinnai 24 HW_HD_CF OIM