Specifications

Installing a Rinnai hot water system that has been pre-assembled is easy, and with known upfront costs, there are no hidden surprises
when quoting. With improved performance, energy efficiency and affordability, our solutions deliver real benefits for the end user, the
owner and the installer.
Demand Direct
Continuous Flow Hot Water
This is designed for constant high water use over an extended period of time.
For example, shower blocks where all showers are regularly run simultaneously,
dairy farms, cafes, hair salons, child care facilities, gyms, sports clubs and
small accommodation.
At Rinnai we’ve developed commercial hot water solutions to provide a system that
works for you. With three main systems on offer that can be adapted and scaled
to suit, whether you have a motel, laundromat or aluminium smelter, we’ve got a
commercial hot water solution for you.
Need lots of hot water in lots of different places? Circulating Ring Main heating
systems are the ideal choice for environments when instant hot water is required at
multiple outlets all at once. Choose a Circulating Ring Main system for your hotel,
restaurant, large family home or commercial space.
Pre-Assembled Systems
• Condently specify
• Known dimensions
• Quote easily with minimal
contingency allowance
• Quick installation
• Factory tested system
• Whole system warranty
Total Cost of Ownership
• Meets New Zealand
compliance regulations
• Lower installation costs
• Lower running costs
• Lower ongoing servicing costs
• Can be serviced without whole
system shutdown
Installation Flexibility
• Nationwide network of trained
technicians
• Can be economically expanded
to meet changes in demand
• Internal or external siting
• Water heaters can be remote
from storage vessels
• Space saving opportunities
System Reliability
• Can be interfaced with
building management or
other alarm systems to verify
system operation
• Inbuilt redundancy through
multiple heating units
Low Temperature Ring Main
Low temperature ring mains are becoming popular as an
economic and reliable solution for larger installations.
Reduce installation and maintenance costs by eliminating
tempering valves at each outlet. Please contact Rinnai to
see if your project would benefit from the use of a low
temperature ring main.
High Temperature Ring Main
Demand Rapid
Rapid Recovery Storage
This is designed for applications or situations requiring rapid delivery with
recovery time available before next use. For example, filling a machine or spa
bath, medium accommodation and commercial laundries.
INFINITY® systems are the perfect match with a circulating ring
main system. Rinnai’s recommended method for combining the
benefits of Rinnai INFINITY® systems with circulating ring mains is
to use a small electric cylinder to keep the ring main heated.
Demand Duo
Continuous Flow with Storage Backup
This is best suited for when the total amount of water drawn during the day’s
peak is known but the rate of water use varies. For example, central hot water
systems for hotels, motels and apartment blocks.
Circulating Ring Main
Commercial Hot
Water Systems