Service Connection Points; Pipe Sizing; Water Supply - Rinnai Infinity 26 Operation & Installation Manual

GENERAL INSTALLATION INFORMATION

Service Connection Points

Refer to "Table 2. Supply, Flow rates, Weights & Service Connections" on page 34 for model specific connection
/ fitting dimension details.
An Approved full flow isolation valve and disconnection union MUST BE fitted to the cold water and gas inlets.
A non return valve is not required on the water inlet unless required by local regulations.
Isolation Valves MUST NOT be fitted directly to the appliance.
If may be necessary to fit a temperature limiting device for delivery to areas used primarily for the purposes of
personal hygiene. Refer to "Hot Water Delivery Temperature" on page 20.
Purge gas and cold water supply lines to remove air and swarf before final connection of the appliance. Swarf in
either the gas or water supplies may cause damage.

Pipe Sizing

If the gas pipe sizing is insufficient the customer will not get the full performance benefit. Gas pipe sizing MUST
consider the gas input to this appliance as well as all the other gas appliances in the premises. The gas meter and
regulator MUST BE specified for this gas rate.
An approved sizing chart such as the one in AS/NZS 5601 should be used. Refer to "Table 2. Supply, Flow rates,
Weights & Service Connections" on page 34 for model specific gas consumption details.
Water pipe sizing and layout should be performed in accordance with AS/NZS 3500. All hot water pipe-work should
be insulated to optimise performance and energy efficiency.

Water Supply

The appliance is intended to be permanently connected to the water mains.
Refer to "Table 2. Supply, Flow rates, Weights & Service Connections" on page 34 for model specific operational
water pressure limitations. Approved pressure limiting valves may be required if the 'Maximum' rated water supply
pressures in Table 2 are exceeded. To achieve the rated flow, the 'Minimum' water supply pressures in Table 2
must be supplied.
The water heaters will operate at lower pressures but will not achieve the rated flow. Contact Rinnai for 'gravity
fed' or 'low pressure' installations.
Water chemistry and impurity limits are detailed under 'Warranty Conditions'. Most metropolitan water supplies fall
within the requirements.
If you are unsure about your local water quality, contact your water authority. If sludge or foreign matter is present
in the water supply, a suitable filter or strainer is required in the water supply to the water heater to prevent
unwarranted damage and loss of performance.
Rinnai 19 HW_CF OIM