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Case studies
Commercial
water heating
Rinnai is constantly improving its products, and as such,
information and specifications are subject to change
without not...
contents:Demand Direct
Mt Smart Stadium - Auckland.......................... 4
NZ Army marae - Waiouru.......................
4 | Rinnai commercial case studies 01-16
Mt Smart Stadium - Auckland
Demand Direct internal manifold system
Change facilit...
Rinnai commercial case studies 01-16 | 5
NZ Army marae - Waiouru
Demand Direct external manifold system
New hot water syst...
6 | Rinnai commercial case studies 01-16
Vector Wero Whitewater Park - Auckland
Demand Direct internal condensing manifold...
Rinnai commercial case studies 01-16 | 7
Sports clubs
Demand Direct 'on-demand' manifold systems
Only heating water as it ...
8 | Rinnai commercial case studies 01-16
Pitango Soup plant relocation - Auckland
Demand Direct internal manifold system
N...
Rinnai commercial case studies 01-16 | 9
Plant & Food Research - Auckland
Demand Direct internal condensing manifold syste...
10 | Rinnai commercial case studies 01-16
Bishop Julius Hall - Canterbury
Demand Duo internal
Halls of residence
Solution ...
Rinnai commercial case studies 01-16 | 11
Shieling Laboratories - Auckland
Customised Demand Duo
Hot water system upgrade
...
12 | Rinnai commercial case studies 01-16
Sports clubs - Les Mills Howick Auckland
Customised Demand Duo
New hot water rin...
Rinnai commercial case studies 01-16 | 13
Nga Taiohi youth forensic unit - Porirua
Customised Demand Duo internal hot wate...
14 | Rinnai commercial case studies 01-16
Queens Residences - Auckland
Continuous flow with storage backup
Queen Street ap...
Rinnai commercial case studies 01-16 | 15
Oxford Court Lifecare village - Dunedin
Demand Rapid and Demand Duo
Two separate...
Rinnai.co.nz
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2016-case-studies-commercial-water-heating-final-low-res

  1. 1. Case studies Commercial water heating
  2. 2. Rinnai is constantly improving its products, and as such, information and specifications are subject to change without notice. For more information contact 0800 RINNAI (0800 746 624). Rinnai New Zealand Limited 105 Pavilion Drive, Mangere, Auckland PO Box 53177, Auckland Airport, Auckland 2150 Phone: (09) 257 3800 Email: info@rinnai.co.nz Web: www.rinnai.co.nz www.youtube.com/rinnainz www.facebook.com/rinnainz Important Rinnai has a specification service, which provides advice on plans for positioning and requirements for hot water and space heating for residential and commercial projects. Contact our customer services team or email info@rinnai.co.nz with 'Request for specification' in the subject line, along with a set of plans if you have them. Specification service Help is here
  3. 3. contents:Demand Direct Mt Smart Stadium - Auckland.......................... 4 NZ Army marae - Waiouru................................ 5 Vector Wero Whitewater Park - Auckland........ 6 Sports clubs...................................................... 7 Pitango Soup plant relocation - Auckland.......... 8 Plant & Food Research - Auckland.................... 9 Demand Duo Bishop Julius Hall - Canterbury........................ 10 Shieling Laboratories - Auckland..................... 11 Sports clubs - Les Mills Howick Auckland........ 12 Nga Taiohi youth forensic unit - Porirua............. 13 Continuous flow with storage backup Queens Residences - Auckland........................ 14 Demand Rapid Oxford Court Lifecare Village - Dunedin ......... 15
  4. 4. 4 | Rinnai commercial case studies 01-16 Mt Smart Stadium - Auckland Demand Direct internal manifold system Change facility upgrade Solution summary • 2 x Demand Direct HDi600 pre-assembled manifold systems • Rinnai commercial natural draft common flue Hot water requirement Hot water on demand producing 72 litres per minute at 42 °C for male and female changing rooms. Solution needed to be cost effective with minimal visual disturbance to the roof line. The Mt Smart Stadium upgrade was part of an initiative to develop a larger sports stadium with an aim to create a facility to accommodate community sport, athletics, rugby league, football, and NZ Police training as well as sports competitions. The change facility upgrade included two changing rooms large enough for 35 players, expanded public toilets, first aid, and drug testing facilities. Rinnai solution Two pre-assembled systems, enabling easy installation, with three Rinnai INFINITY HDi200 internal units manifolded together. A common natural draft flue system, venting air through a common header was used to eliminate the need to flue each unit separately, and to reduce the number of penetrations through the roof. Installation details • Date of installation November 2015 • Installer W Mattson Plumbing Ltd • Specifier Burr Mechanical Consulting Limited Quick and easy installation with pre-assembled systems and common flue.
  5. 5. Rinnai commercial case studies 01-16 | 5 NZ Army marae - Waiouru Demand Direct external manifold system New hot water system Solution summary • 1 x Demand Direct HD600 pre-assembled manifold system Hot water requirement Hot water system for simultaneous use of the following: • 6 x showers and sinks • 2 x washing machines Peak usage hours with high demand—low use in other periods.NZ Army marae based in Waiouru. The complex comprises of a wharenui (meeting house), wharehoroi (ablutions), and wharekai (dining hall). It will cater for more than one hundred people. Rinnai solution Demand Direct HD600, comprised of three Rinnai INFINITY HD200 external units. The HD units are mounted and fully assembled to pre-engineered frames with foam insulated pipes. This system comes with manifold electronic control staging, so only the required number of water heaters start to match the demand for hot water. The sequence is rotated so there is even use of each water heater. Installation details • Date of installation March 2015 • Installer New Zealand Defence Force • Specifier Rinnai NZ Ltd Pre-engineered, fully assembled and insulated, all ready to be plumbed in.
  6. 6. 6 | Rinnai commercial case studies 01-16 Vector Wero Whitewater Park - Auckland Demand Direct internal condensing manifold system Lower operating cost hot water solution Solution summary • 1 x Demand Direct EFi630 internal condensing manifold system • 1 x EF250 external Hot water requirement • Hot water for changing rooms • Hot water for kitchen and hand wash station As the site operated on LPG bottles there was a requirement for the units to be as efficient as possible, as well as having a small installation foot print. Vector Wero Whitewater Park, located next to the Vodfone Events Centre in Manukau. The park is New Zealand's first purpose-built whitewater facility. It has two rivers to suit different skill levels, and offers rafting, stand-up paddleboarding, and kayaking activities. Rinnai solution As efficiency was the main driver EF250 models were used. These models, with condensing technology, have a thermal efficiency of 95% as compared to 83% for the standard HD models. The Demand Direct systems can also have a small foot print. Removing the base skid the system can be installed directly on a wall. Installation details • Date of installation May 2016 • Installer DH Wright Plumbing Ltd • Specifier eCube Building Workshop Ltd EFi250 condensing manifolded units operate more efficiently than standard HDi200 units, saving on operational and life cycle costs.
  7. 7. Rinnai commercial case studies 01-16 | 7 Sports clubs Demand Direct 'on-demand' manifold systems Only heating water as it is needed Solution summary • Demand Direct pre-assembled manifold system Rinnai has on-demand systems for sports facilities that provides hot water without the need to continally store and heat water in cylinders. The Demand Direct system uses the intelligence contained within the Rinnai INFINITY and the manifold (MECS) system to control energy input and hot water output. The MECS system will control up to five Rinnai INFINITY water heaters, and banks of up to five can be installed in parallel. Running out of hot water on busy days is a common problem for sports clubs. Hot water usage for most sports clubs center around game or training times, and for gyms, peak periods in the morning and evening. Recent Demand Direct installations: • Sumner Surf Club - Christchurch • Taieri Rugby Football Club - Mosgiel • Seddon Domain Rugby changing room - Blenheim • UOW High Performance Sports Center - Tauranga • Invercargill Rugby Club • Victoria Park Rugby Club - Palmerston North Once the Demand Direct system is installed clubs can look forward to an endless supply of hot water when they need it. The system's compact design makes it simple to install and operates only when needed, saving energy and ongoing running costs. The manifold electronic control system will turn on each unit as required to meet demand, efficiently controlling energy use.
  8. 8. 8 | Rinnai commercial case studies 01-16 Pitango Soup plant relocation - Auckland Demand Direct internal manifold system New hot water solution Solution summary • 1 x Demand Direct HD1000 pre-assembled manifold system • 1 x Demand Direct HD400 pre-assembled manifold system Hot water requirement • 1000 litres every 15 minutes at 60 °C • 40 litres per minute at 45 °C As a new development the engineer had a requirement for a heavy duty efficient system to be installed in a roof space. Pitango started 15 years ago selling fresh homemade soup from the back of a van. Using the freshest of ingredients and making all their stocks from scratch, it's hard to miss their colourful soups and meals in supermarket chillers. Rinnai solution Two separate pre-assembled skid systems were designed to be easily installed into the roof space. One system was dedicated to provide hot water for food processing and the other for washing down equipment. Installation details • Date of installation May 2015 • Installer Ariel Plumbing & Gasfitting • Specifier TEG Pty Australia Rinnai INFINITY HDi200 units can be installed almost anywhere. These units were installed in a roof space and flued through the roof.
  9. 9. Rinnai commercial case studies 01-16 | 9 Plant & Food Research - Auckland Demand Direct internal condensing manifold system New hot water system Solution summary • 1 x Demand Direct EF420 internal condensing manifold system • 2 x Demand Direct EF620 internal condensing manifold system • BMS error indication switch Hot water requirement Three hot water systems, two supplying domestic hot water for the Hamilton and Cunningham buildings, and one hot water system dedicated to the laboratory. Plant & Food Research decided to re-purpose two major buildings at their Mt Albert campus. The largest building is the seven storey Hamilton building, which is undergoing significant remediation work, and the Cunningham Building that converted office and storage space into new social and formal meeting areas. Rinnai solution Pre-assembled system with a 315 L storage cylinder and Rinnai INFINITY EFi250 internal condensing units (DD420 - 2 x EFi250, DD620 - 3 x EFi250). The EF units were flued individually— terminating horizontally. The systems were also specified with a built-in BMS error indicator switch. Installation details • Date of installation March 2016 • Installer Hanlon Plumbing • Specifier eCubed Building Workshop Ltd Systems can be easily scaled to cater for different hot water demands.
  10. 10. 10 | Rinnai commercial case studies 01-16 Bishop Julius Hall - Canterbury Demand Duo internal Halls of residence Solution summary A Demand Duo continuous flow with storage backup system comprised of: • 1 x 315 L storage cylinder • 4 x Rinnai INFINITY HDi200 internal water heaters Hot water requirement Hot water system to meet peak hour demand for a sixty bed accommodation block equipped with high performance showers and basins. Bishop Julius Hall has been serving the University of Canterbury students for almost one hundred years. The new sixty bed block building has been engineered by Cosgroves based in Christchurch. Rinnai solution A Demand Duo system that uses a combination of four Rinnai INFINITY HDi200 internal units, a 315 L storage backup cylinder, and individual flueing terminating horizontally through a wall. This type of system is used where the total water demand during the day's peak hot water period is known, but the rate of use varies. Installation details • Date of installation December 2015 • Installer HPPS Ltd • Specifier Cosgroves Limited The system offers the flexibility of sizing the appropriate number of Rinnai INFINITY water heaters and different hot water storage capacities to supply specific hot water volumes.
  11. 11. Rinnai commercial case studies 01-16 | 11 Shieling Laboratories - Auckland Customised Demand Duo Hot water system upgrade Solution summary • 1 x Demand Direct HD750 manifold system set at 85 °C • 1 x 2000 L stainless steel tank (not supplied by Rinnai) • 1 x DDSTAT hot water system controller • 2 x pumps (for duty and standby) Hot water requirement According to Oliver Hoffman (MD), the old system was impractical, inefficient and needed an upgrade. Rinnai was requested to design a centralised hot water system capable of delivering 150 L/min. at 70 °C per batch, or deliver 1200-1600 litres of 70 °C water during peak hour demand. The system also needed to be located outside. Shieling Laboratories are New Zealand's leading contract manufacturer of skincare cosmetics, toiletries and personal care products, providing innovation, and quality products to New Zealand's leading brands and retailers. Rinnai solution Three Rinnai INFINITY HD250 external units manifolded, set at 85 °C, were combined with a 2000 L stainless steel buffer tank, which was set at 75 °C. The HD250 units provided the total hot water requirements, with the tank allowing for peak demand. The hot water system is capable of delivering approximately 4000 L at 75 °C in the first hour, then 2400 L every hour after that. Installation details • Date of installation December 2015 • Installer PBJ Industries Ltd • Specifier Rinnai NZ Ltd Flexible system that can integrate easily with other hot water system components.
  12. 12. 12 | Rinnai commercial case studies 01-16 Sports clubs - Les Mills Howick Auckland Customised Demand Duo New hot water ring main system Solution summary • 1 x Demand Direct DD1000 pre-assembled 50 mm manifold system • Commercial XL buffer cylinder • 1 x DDTSTAT controller Hot water requirement Centralised hot water plant to serve shower blocks, a laundry, and dish washing sinks. The expected hot water demand of 8240 L/hr at 40 °C occurs during the peak 1-2 hour period in the mornings and evenings. First opening in 1968, Les Mills gyms now have 12 New Zealand owned and operated clubs throughout the country. Rinnai has also developed hot water systems for the Takapuna and Newmarket gyms. Rinnai solution Demand Duo system with a combination of four Rinnai INFINITY HD250 external continuous flow gas water heaters with a large XL storage cylinder. The storage cylinder is available to accommodate high peak flow rates for short periods of time. The system delivers 8880 L/hr at 40 °C in the first hour, then 7650 L/hr at 40 °C every hour after that. Installation details • Date of installation April 2016 • Installer Southern Cross Plumbing, Amazon Plumbing & Gas, Quix Plumbing Ltd • Specifier Rinnai NZ Ltd Customised system allows the water heaters to be mounted externally on a roof, 10 m away from the tank and pump, which are installed in a small plant room.
  13. 13. Rinnai commercial case studies 01-16 | 13 Nga Taiohi youth forensic unit - Porirua Customised Demand Duo internal hot water system New customised hot water system Solution summary • 1 x HD800 pre-assembled manifold system • 1 x 1000 L XL cylinder • 1 x BMS error indication switch • 1 x DDSTAT hot water system controller Hot water requirement Due to site restrictions the main criteria, aside from hot water supply, was to develop a BMS system, which could be operated remotely. The Rinnai error indication switch will advise the status of the system and report any fault issues associated within each unit, and provide a signal to the building management system. Nga Taiohi youth inpatient mental health service is a new purpose built specialist ten bed unit for the treatment of youth offenders with mental health and drug and alcohol issues. Rinnai solution The HD800 is made up of four Rinnai INFINITY HDi200 internal units, each individually flued with a horizontal flue termination. The units are manifolded and connected to a Rinnai BMS error indication switch. The HD800 system is connected to a 1000 L XL cylinder with a DDSTAT thermostat/controller. Installation details • Date of installation March 2016 • Installer John Leen Plumbing Ltd • Specifier Pacific Consultants BMS error indication switch can be connected to a BMS system to trigger an alarm when an error has occurred with the hot water system.
  14. 14. 14 | Rinnai commercial case studies 01-16 Queens Residences - Auckland Continuous flow with storage backup Queen Street apartments Solution summary • 1 x internal back-to-back pre-assembled manifold system • Rinnai commercial fan assisted common flue system • 6 x 350 L cylinders (not supplied by Rinnai) Hot water requirement Hot water system to serve 250 apartments. The initial design comprised of two boilers, common flue, and storage tanks, however inability by the manufacturer to supply a flue system meant an alternate design with a small footprint was required. The Queens Residences is an iconic landmark building welcoming you home to a vertical village. Designed by award winning Leuschke Group architects, Queens Residences comprises a $150 million planned new residential and retail development located on Queen Street. Rinnai solution A pre-assembled back-to-back skid containing two banks of four Rinnai INFINITY HDi200 internal units manifolded together. The restricted space and enclosed area required the units to be flued with a Rinnai commercial fan assisted common flue system. Installation details • Date of installation May 2016 • Installer Hanlon Plumbing Ltd • Specifier Hydraulic Services Consultants NZ Limited Hydraulic engineer likes the small footprint that the back- to-back system offers and is considering using this type of system again for another apartment project.
  15. 15. Rinnai commercial case studies 01-16 | 15 Oxford Court Lifecare village - Dunedin Demand Rapid and Demand Duo Two separate hot water systems Solution summary • 1 x Demand Rapid (DD1200E315L) system • 1 x Demand Duo 600 external pre-assembled manifold system Hot water requirement The design requirement was to provide hot water to the 48 room care facility, and a separate system for the kitchen and laundry area. Only 8-10 residents shower at one time, so hot water demand has been calculated on this simultaneous use as opposed to the full 48 room capacity. Oxford Court Lifecare is a purpose built facility providing rest home and hospital care. Their existing 1997 hot water system was undersized and in need of an upgrade to cope with increased demand. Rinnai solution A DD600 external system was specified for the care facility to meet peak hour demand. The DD600 will provide 2379 L/hr at 60 °C, incoming water temperature calculated for worst case scenario in winter of 5 °C. A dedicated Rinnai Demand Rapid system was specified for the commercial kitchen and laundry facility where a large volume of water is needed quickly, with recovery time before being used again. Installation details • Date of installation April 2016 • Installer Gas & Water Ltd - Dunedin • Specifier Rinnai NZ Ltd Cater for smaller hot water requirements with a separate Rinnai Demand Rapid system, shown on the far right of the photo.
  16. 16. Rinnai.co.nz Experience our innovation 0800 746 624 http://www.youtube.com/rinnainz http://www.facebook.com/rinnainz

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