Rinnai new Zealand Limited
Hotflo Electric Storage Water Heater
Operation and Installation: 11151-C 03-10
17
Installation: Valves and fittings
Valves with pressure ratings other than those listed in this manual must not be used.
Valves and fittings supplied with the water heater
Valves and fittings supplied with the water heater are placed in the Styrofoam packaging
during transit. The pressure ratings of the valves are shown on the ‘Connections and settings’
page.
The following valves and fittings are supplied:
▪
a combined Temperature and Pressure Relief Valve (TPR), this is a safety device and
mandatory that it is fitted to the top of the cylinder by the installer in all installations
▪
Two brass plugs to plug the unused hot and cold connections
▪
Four ¾ MF adaptors to assist with fitting plumbing connections
▪
a reducing bush to enable fitting the ¾” TPR Valve connection to the ½” tank connection
Installer to supply
The following valves and fittings are to be supplied by the installer:
▪
a cold water Expansion Control Valve (ECV) must be fitted
▪
Pressure limiting valve
▪
a stop cock and non return valve, these are fitted to the cold water supply to the water
heater, (combination valves incorporating these functions are suitable)
▪
a temperature limiting device such as a tempering valve, if required
Refer to the ‘Connections and settings’ page for the pressure settings for the ECV and Pressure
Limiting Valve
