Specification Summary - Rinnai Mains Pressure Cylinder Owner And Installer Manual

Specification summary

Suitability
• Indoor mains and low pressure systems
• Residential and commercial applications
• Left or right hand cold inlet connections
Not suitable as a pool or spa heater.
The 180 L, 250 L, and 300 L cylinders can be
connected to an open loop solar or hot water
heat pump system via the eco connection.
System should be located and arranged so as
to achieve the closest proximity to water draw
off points.
Not suitable for bore or tank water, or for
mains supply where the water is hard and/or
aggressive. Refer p.12 and p.17 for cylinder
water quality and impurity limits.
Operating pressures
Maximum working pressure = 850 kPa
Element
Incoloy 825 alloy sheath curved element
positioned at the bottom of the cylinder, and
midway if a dual element is purchased.
Thermostat
The thermostat setting is between 60-80 °C.
Standard cylinder
Robert Shaw 30 A contact
thermostat, manually resettable at
85 °C (yellow dial).
Cylinder in a solar installation
Robert Shaw 30 A contact auto-
reset thermostat (red dial).
8 | MP indoor stainless steel cylinders: Owner and installer guide: 20132-I 09-20
Weights empty
• 135 L: 27 kg
• 180 L: 32 kg
• 250 L: 41 kg
• 300 L: 47 kg
Pressure limiting (reducing) valve
This water heater MUST be installed with a
500 kPa or less pressure limiting valve and
appropriate cold water expansion valve.
TPR valve
A temperature and pressure relief valve is
supplied with the water heater and MUST be
fitted. A TPR insulation kit, to reduce heat loss,
is also supplied with the larger 250 and 300 L
cylinders—this also needs to be fitted.
The TPR valve thread should be sealed with
teflon tape, do not use paste and hemp. Use
the spanner flats on the valve body to tighten,
DO NOT use a wrench on the valve body.
The TPR valve must be fitted with a drain pipe
to direct any water discharged to a visible point
outside the property. The drain pipe must have
a continuous fall and be at least the same size
as the TPR valve outlet (½ ˝BSP). Where the
drain pipe exceeds three metres in length it is
recommended an air break be provided within
300 mm of the TPR valve outlet. Where an air
break is used it is recommended that the pipe
size after the air break be increased to one
size larger than the TPR valve. It must also be
protected from freezing conditions.
Protection against water
IPX1
full
162 kg
212 kg
291 kg
347 kg