Page 1
Installation guide Rinnai INFINITY A-Series continuous flow water heaters REU-A2626WG-ZK REU-A2426WG-ZK REU-A2024WG-ZK REU-A1620WG-ZK The Rinnai INFINITY A-Series models are not suitable for commercial or solar applications...
Page 2
Warning Improper installation, adjustment, alteration, service and maintenance can cause property damage, personal injury or loss of life. For more information about buying, using, and servicing of Rinnai appliances call: 0800 RINNAI (0800 746 624). Rinnai New Zealand Limited 105 Pavilion Drive, Mangere, Auckland...
Page 3
Before installation ........4 Appliance location ........4 General installation information ....5 Water delivery temperature ......6 Connections and fittings ......7 Dimensions (mm) ........8 Commissioning ...........10 PCB interface and dip switch settings ..12 Flue diverter dip switch changes ....14 Appendix 1 Water controller communication cables ..15...
Failure to follow these instructions could cause a malfunction of the appliance. This could result in serious injury and property damage. • Applicable models: These instructions apply only to the Rinnai A-Series continuous flow water heater models listed on the cover page of this guide.
Contact Rinnai for gravity fed or low pressure installations. Water chemistry and impurity limits are detailed in the operation guide within the warranty section.
(TLD = Temperature Limiting Device) When the Rinnai INFINITY is set to deliver water at a temperature higher than 55 °C, it will be necessary to fit a Temperature Limiting Device for delivery to areas used for the purposes of personal hygiene.
R¾ (20 mm) (20 mm) (20 mm) REU-A2626WG-ZK Service connection points An approved full flow isolation valve and disconnection union MUST BE fitted to the cold water inlet. A non-return valve is not required unless required by local regulations. Isolation valves MUST NOT be fitted directly to the appliance.
Dimensions (mm) The basic dimensions, (height, width, and depth) are the same. The difference between the models are the dimensions and position of the flue outlet. A26 & A24 175.5 164.5 17.7 8 | A-Series CFWH installation guide 01-18...
Page 9
5.5 x 24 “ 5.5 x 24 “ long hole long hole Ø 13 hole 29.5 A-Series CFWH installation guide 01-18 | 9...
Inlet supply pressure to the appliance MUST BE checked and set within the operating parameters of the appliance in all instances. If the appliance can not be adjusted to perform correctly call 0800 RINNAI (0800 746 624) for assistance. Steps to commissioning a Rinnai INFINITY A-Series model...
Page 11
PCB settings checked if the factory default temperature has been changed. Dip switch settings checked if a flue diverter is fitted. Short video: http://rinnai.co.nz/007 Operate and test for gas leaks Replace the appliance front cover otherwise the unit won’t operate correctly, and operate and test for gas leaks using an electronic leak detector.
Rinnai will accept no liability for issues arising out of the use of this information. If you have any doubts about the performance of the water heater, please contact Rinnai by phoning 0800 RINNAI (0800 746 624).
Page 13
Communication interface socket Data transfer button for PCB replacement - push button 1 (PB1) Data transfer LED, illuminates to show data transfer in progress MODE button, places the PCB into programming mode (PB2) MENU button, cycles through available modes (PB3) Forced combustion rate setting mode, raises the gas pressure VALUE button, cycles through available values (PB4) Forced combustion rate setting mode, lowers the gas pressure...
Flue diverter dip switch changes When delivered ex-factory, by default SW1, SW2, SW3, and SW4 of the DipSW are set to the OFF position. If a flue diverter is installed onto the water heater, SW1 and SW3 of the DipSW must be set to the ON position.
10 m long communication cable is supplied for connection to the water heater. Only Rinnai supplied communication cables may be used. The water heater end of the cables is fitted with spade terminals. Only two pairs of cables (four spade connectors in total) may be terminated.
Need help?
Do you have a question about the REU-A2626WG-ZK and is the answer not in the manual?
Questions and answers