Rinnai INFINITY 26i User manual

Service Manual
Continuous Flow Water Heater
Important.
Read these instructions carefully before attempting installation or use of this
appliance.
All work must be carried out by competent persons.
REU-VR2632FFUD - 26i
REU-VR2632 FFU-HD-E- HD50i

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The Rinnai range of water heaters, when
correctly installed, comply with the
requirements of the United Kingdom
Water Regulations / Byelaws (Scotland).
These Products can be found listed in the
Water Fittings and Materials Directory.
The Rinnai water heaters are CE Marked as allowed by Technigas
26i - REU-VR2632FFUD-E
HD50e - REU-VR2632WDHD-E
HD50i - REU-VR2632FFUDHD-E
HD70e - REU-VRM3237WHD-E
HD70i - REU-VRM3237FFUHD-E
Certificate numbers: E0841/5386 Rev.5 - E0716/5360 Rev.05
E1061/5498 Rev.1 - E1060/5498 Rev.1
ID number: 0461BP0795 - 0461BO0739 - 0461BS0903 - 0461BS0903
Date of Issue: 23/12/2004 - 28/07/2003 - 26/10/2007 - 26/10/2007
Quality System Standard
ISO 9001 - 2000
The Design, Development, and Manufacture of Gas Water Heating Appliances done under Rinnai’s
Quality Management System is certified under the Quality Management System Standard ISO 9001.
Registration Number JQ0003D
Registered since: February 1994
Certified by JIA—QA Centre.

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This manual is intended for use by Gas Safe
Registered Engineers
November 2012

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CONTENTS……………………………………………………………………………..…………………3
CONTENTS

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Glossary of Terms and Symbols

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Rinnai water heaters will NEVER RUN OUT of hot water. As long as electricity, water, and gas
supplies are connected, hot water is available when hot water taps are open.
Built into the main micro-processor is the facility to LIMIT THE MAXIMUM TEMPERATURE of the hot
water supplied. The water temperature may be set to various temperatures. This is particularly useful
when the hot water unit is installed where young children or the infirm may be using the hot water. If
required, the temperature can be changed via the dip switches on the PCB or with a localised
controller. For further information, please contact Rinnai.
Rinnai water heaters are powered flue appliances. This makes them COMPACT, saving both floor
and wall space.
The temperature of outgoing hot water is CONSTANTLY MONITORED by a BUILT-IN SENSOR. If
the temperature of the outgoing hot water rises to more than 3°C above the selected temperature the
burner is shut OFF and only turned ON again when the temperature falls to below the selected
temperature.
The burner lights automatically when the hot water tap is opened, and extinguishes when the tap is
closed. IGNITION IS ELECTRONIC, so there is no pilot light. When the hot water tap is off, no gas is
used.
Up to four external temperature controllers can be mounted remotely from the heater. One Standard
control is supplied with all appliances (except for HD range). The remote offers the following
additional features:
Localised temperature setting
Diagnostic information
Error Codes
‘Deluxe’ Temperature Controllers are an optional extra. These provide functions including Bath Fill,
Voice Prompt, and Clock Setting.
Temperatures selected at the controllers are retained in the SYSTEM MEMORY.
Operating NOISE LEVEL IS VERY LOW.
ERROR MESSAGES ARE DISPLAYED on the Temperature Controllers and Status Monitor,
assisting with service.
FROST PROTECTION device built in as standard providing a power supply is maintained
FEATURES AND BENEFITS

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* Minimum operation pressure and flow based on temperature set point and inlet water conditions.
Model HD50e 26i - HD50i Units
Installation External Internal
G20 Nat Gas Press Low 1.29 1.75 mbar
G20 Nat Gas Press High 6.81 9.35 mbar
G31 Propane Press Low 2.21 2.36 mbar
G31 Propane Press High 11.2 11.1 mbar
Flue System Direct Forced Exhaust Forced, Room Sealed
Temp. Range Controllers 37-46, 48, 50, 55, 60, 65, 75 °C
Temp. via dip switches 40, 42, 50, 55, 60, 65, 75, 85 °C
Ignition Direct Electronic Ignition
Gas Consumption & Capacities min conditions ( Hi= net calorific value Hs= gross calorific value )
G20 Nat Gas: Input Qm: Hi/Hs | Useful output Pm 3.93/4.36 | 3.49 3.93/4.36 | 3.49 kW
G20 Nat Gas flow V 0.42 0.42 m3/hr
G31 Input Qm: Hi/Hs | Useful output Pm4.01/4.36 | 3.49 4.01/4.36 | 3.49 kW
G31 flow normal operating conditions Mm0.31 0.31 Kg./hr
Gas Consumption & Capacities nominal condit. ( Hi= net calorific value Hs= gross calorific value )
G20 Nat Gas: Input Qn: Hi/Hs | Useful output Pn49.8/55.3 | 45.9 48.6/54.0 | 44.8 kW
G20 Nat Gas flow ref. conditions Vr5.27 5.14 m3/hr
G31 Input Qn: Hi/Hs | Useful output Pn50.9/55.3 | 45.9 49.7/54.0 | 44.8 kW
G31 flow normal operating conditions Mn3.95 3.86 Kg./hr
Country of destination GB/IE
Gas category and pressure I2H G20-20mbar / I3P G31-37mbar
Type A3 Outdoor C13/33 Indoor
Max Flow 32 32 L/min
Min Operation Flow ON = 2.4* / OFF = 1.7* ON = 2.4* / OFF = 1.7* L/min
Water Pressure (Pw) 1.4* - 10.0 bar
Power Supply 230 V / 50 Hz
Electric Consumption (normal/stand-by/anti-frost) 50 / 2 / 100 66 / 2 / 100 Watts
Noise Level 50 50 dB (A)
Ignition safety time TSAmax 4.2 Sec.
Weight 23 24 Kg.
TECHNICAL DETAILS

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WATER FLOW CHARACTERISTICS
26i - HD50e - HD50i - HD70e - HD70i

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DIMENSIONS
26i - HD50i

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DIMENSIONS
HD50e