Rinnai Infinity 20e User manual

Installation and User Manual

Infinity 20e

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.

RINNAI UK WARRANTY

As the purchaser of this high quality Rinnai Water Heater you are provided with the

following conditional guarantee.

Definition of Standard Use.

The warranty period allocated under Standard Use is based on Domestic and Light

Commercial hot water usage. Rinnai Standard Use warranty periods apply only where

Rinnai water heaters are installed in domestic and light commercial situations at

operating temperatures below 650C and do not include installations incorporating

storage cylinders or building flow and return systems.

The warranty shall apply to any Rinnai water heater from the Infinity range used in this

way.

Definition of Commercial Use.

The warranty period allocated under Commercial Use are for Infinity water heaters

installed at premises such as commercial and industrial buildings, cafes, caravan parks,

and sporting complexes. Commercial Use warranty applies to:

Water heaters supplying a central shower block

Water heaters supplying kitchens used for the bulk preparation of food.

Water heaters set to 650C or higher.

Water heaters used in commercial or industrial processes.

Any application that uses Rinnai water heaters in conjunction with storage tanks

Any application that uses Rinnai water heaters in conjunction with a flow / return system.

Water heaters installed as components of centralised bulk hot water systems.

Rinnai Infinity units used in Commercial Situations are only subject to a 1 year warranty

across the board. Commercial situations should be supplied by the Rinnai HD range.

No Rinnai warranty will cover faults arising from improper installation or gas supply,

water contaminants beyond defined limits, environmental factors, plumbing fittings, or

other outside influences of which Rinnai is not responsible. Service calls for these

issues will be chargeable.

Heat Exchanger All Other Parts

Parts Labour Parts Labour

Standard Use 3 Years 1 Year 3 Years 1 Year

20e

Commercial Use 1 Year 1 Year 1 Year 1 Year

20e

Description pH

Total Dissolved

Solids (TDS)

Total Hard-

ness Chlorides Magnesium Calcium Sodium Iron

Maximum Recom-

mended Levels 6.5 - 9.0 600 mg/litre 200 mg/litre 300 mg/litre 10 mg/litre 20 mg/litre 150 mg/litre 1 mg/litre

CONTENTS

Rinnai UK Warranty..……………………..

Unpacking Rinnai Water Heater…………

Installation Instructions……………………

Flue Requirements………………………...

Dimensions…………………………………

Technical Details..…………………………

Features and Benefits…………………….

Important Information……………………..

Operation without Remotes………………

Temperature Controls……………………..

Testing………………………………………

Gas Pressure Setting……………………..

Dip Switch Setting…………………………

Error Messages……………………………

Restarting the Rinnai Water Heater……..

Wiring Diagram…………………………….

Diagnostic Points…………………………..

Specification………………………………..

Service Contact……………………………

Commissioning Check List………………..

…………………………………………………2

…………………………………….…………..4

…………………………………………………5

…………………………………………………8

…………………………………………………9

……………………………………………….10

……………………………………………….11

……………………………………………….12

……………………………………………….14

……………………………………………….15

……………………………………………….25

……………………………………………….26

……………………………………………….28

……………………………………………….30

……………………………………………….32

……………………………………………….33

……………………………………………….34

……………………………………………….35

………………………………………………36

UNPACKING RINNAI WATER HEATER

• After unpacking the appliance check for damage, if the heater is damaged contact

your supplier immediately. Do not install a damaged appliance before checking

with your supplier.

• One remote control and heater accessories pack are inside the carton.

• Check that the appliance supplied is the correct gas type for the installation. Refer

to the data plate located on the left-hand side of the appliance.

• Remove the heater and the accessories from the carton, and check that all the

parts are included . The remote control cable is provided with spade connectors.

Quantity Diagram Description

1 Temperature con-

troller MC-91-1A

1 Cable clamp

1 Cable Clamp

5 Spade connectors

1 Control cable 20

metres

1 Clamp screw

Unit Mounting Fasteners

5 Screw

Remote Control Parts

Quantity Diagram Description

IMPORTANT INFORMATION

1. Gas safety (Installation & Use) regulations 1998 are the ‘Rules in force’. In your

own interest and that of safety, it is law that all gas appliances are installed by

competent persons in accordance with the above regulations. Failure to install

appliances correctly could lead to prosecution. Other persons should NOT attempt to

install this equipment.

2. Unpack the appliance and check it carefully. If it appears to have any defects or

damage DO NOT INSTALL, contact your supplier.

3. This appliance is for normal hot water supply only and should not be used as pool or

spa water heater.

4. The heater must be installed in the vertical position with the gas and water

connections on the underside pointing vertically downward.

5. Installation must be carried out in accordance with the current issue of the following:

Building regulations issued by the Department of the Environment and

Building Standards (Scotland) Regulations.

I.E.E. Wiring regulations for electrical installations.

Gas safety (Installation and Use) Regulations current issue.

BS 5546

BS 5440

BS 6891

BS 5482

BS 6700

Local byelaws

Water regulations

Health and safety at work etc. Act 1974

Such other specifications and regulations that may supersede or complement the

above documents.

Please be sure that you are fully aware of your obligations and responsibilities

under these regulations.

INSTALLATION INSTRUCTIONS

General Installation Information.

External Installations.

The Rinnai Infinity 20e is for external mounting only.

The unit is classed as a Category A3 flueless appliance as described by CEN CR1749.

Although BS 5440 does not relate directly to heaters in this category the rules must be

followed when positioning the appliance, especially with regard to other appliances,

openings, and boundaries. Figure C.1 from BS5440-1:2000 is provided for your

guidance.

The appliance must be mounted on a vertical wall or structure with the water and the gas

connections on the underside pointing towards the ground.

THIS APPLIANCE MUST NOT BE USED AS A DOMESTIC SPA OR SWIMMING

POOL HEATER.

Appliance Location.

The appliance should be placed as close as practicable to the most frequently used hot

water outlet point or points to minimise the delay time for hot water delivery. For

installations where the distance between the unit and hot water outlet points is

considerable, the appliance can also be fitted in a 'flow and return system' which

minimises the waiting time for hot water delivery. Alternatively, multiple appliances can

be strategically placed to service outlet points with minimal delay time. Contact Rinnai

for further information.

Location of the appliance flue terminal must be in accordance with the clearances shown

on page 8. Ensure that the flue terminal and hot water outlet connection cannot be

touched by children. The appliance must be clear of obstructions and shrubbery.

The wall or structure on which it is mounted must be capable of supporting the weight of

the appliance (16 kg) and associated pipework. Ensure that suitable screws or bolts are

used to secure the water heater to the wall. Bracket and fixing hole locations are shown

on page 9. The top bracket has a keyhole slot so that the appliance can be hung on one

screw, and then the other fixings can be added to secure the unit.

The appliance must be in an accessible location. Sufficient clearances shall allow

access to, and removal of, all serviceable components. The appliance should not be

mounted higher than 3.5 metres from the ground or floor level unless the customer can

arrange permanent and safe access or can arrange another means of access, for

example, by means of scissor or boom lifts.

Multiple heater installations can be installed with the heaters manifolded together.

The heater draws combustion air through the casing for the external model.

Heater guards and pipe cover boxes for security and safety are available from Rinnai.

INSTALLATION INSTRUCTIONS - POSITIONING

INSTALLATION INSTRUCTIONS - CONNECTIONS

Water Supply.

Where the water supply pressure exceeds 10 bar, an approved pressure reducing

device is required at the inlet of the appliance. To achieve the rated flow a minimum

water supply pressure of 1.3 bar is required at the appliance inlet. The unit will operate

at lower supply pressures but the rated flow will not be achieved. Contact Rinnai for

'gravity fed' or 'low pressure' hot water installations.

Water pipe sizing and layout should be designed correctly to ensure the given water

flows from the Rinnai Infinity are available. All hot water pipework should be insulated to

optimise maximum performance and energy efficiency.

Water Connection.

Connect the hot and cold water supply pipes. An approved isolation valve and strainer

MUST be installed in the cold water inlet pipe. An approved isolation valve should be

installed in the hot water outlet pipe. There must be a union or release fitting on the

heater side of the isolation valves. A non return valve is not required unless dictated by

local regulations. A pressure relief valve should be installed in the pipework to

discharge safely into a suitable drain if used in a flow and return configuration.

Position of the cold water inlet, hot water outlet and gas connection is shown on page 9.

Water connections are 1/2 inch BSP, gas is 3/4 inch BSP. This is NOT an indication of

the pipe sizes required.

If the heater is in a hard water area a suitable water conditioning device should be in-

stalled to prevent the build up of limescale within the heat exchanger. Heat exchangers

damaged by scaling are not covered by the manufacturers guarantee. Guidelines are

given below. If the local water exceeds these values the heater must be protected.

Gas Connection

Check pipe sizing required for the heater input. The heat input for the Infinity 20e is 44.4

kW. Refer to BS6891 (Natural Gas) and BS5482 (Propane) for guidance on correct pipe

sizing calculation.

Check that the size of the gas meter and pipework will be sufficient for all appliances on

the main. Sufficient gas must be available at the appliance if correct operation is to be

expected. An approved gas isolation valve must be fitted at the gas inlet. A union or

release fitting should be installed after the isolation valve.

Electrical Connection.

The appliance must be earthed. The appliance is suitable for 230VAC – 50hz mains

only and all wiring must be carried out to the I.E.E regulations latest edition. The heater

electrical supply must be provided with a fused (3A) local isolator with a contact

separation of 3mm minimum on all poles for servicing. Observe polarity and ensure that

wiring is correctly restrained.

Description pH

Total Dissolved

Solids (TDS) Total Hardness Chlorides Magnesium Calcium Sodium Iron

Maximum Recommended

Levels 6.5 - 9.0 600 mg/litre 200 mg/litre 300 mg/litre 10 mg/litre 20 mg/litre 150 mg/litre 1 mg/litre

Dimension Terminal Position Distance

A Directly below an opening, air brick, opening windows, etc. 300mm

B Above an opening, air brick , opening window, etc. 300mm

C Horizontally to an opening, air brick , opening window, etc. 300mm

D Below gutters, soil pipes or drain pipes. 75mm

E Below eaves. 200mm

F Below balconies or car port roof. 200mm

G From a vertical drain pipe or soil pipe. 150mm

H From an internal or external corner. 200mm

I Above ground, roof or balcony level. 300mm

J From a surface facing the terminal. 600mm

K From a terminal facing a terminal 1200mm

L From an opening in a car port. ( e.g. door, window) into a dwell-

ing 1200mm

M Vertically from a terminal on the same wall. 1500mm

N Horizontally from a terminal on the same wall. 300mm

O From the wall on which the terminal is mounted N/A

P From a vertical structure on the roof. N/A

Q Above an intersection with roof. N/A

FLUE REQUIREMENTS - POSITIONING

DIMENSIONS

TECHNICAL DETAILS

* Factory Setting

**Minimum operation flow based on temperature setpoint and inlet conditions.

Infinity Model Infinity 20e Units

Installation External

Nat Gas Press Low 1.8 mbar

Nat Gas Press High 9.2 mbar

LPG Press Low 1.9 mbar

LPG Press High 8.4 mbar

Height 530 mm

Width 350 mm

Depth 170 mm

Weight 16 kg

Flue System Forced Exhaust

Temp. Range Controllers 37 - 75 deg C

Temp. Range without

Controllers

37,40,43,50,

55*,65,75 deg C

Ignition Direct Electronic

Ignition

Gas Consumption Low

Nat Gas 5.9 kW

LPG 5.6 kW

Gas consumption High

Nat Gas 44.4 kW

LPG 44.4 kW

Max Flow raised 33C 15.4 L/min

Min Operation Flow 2.4** L/min

Water Pressure Nom. 1.3 - 10 bar

Power Supply

Electric Consumption 74 Watts

230 V / 50 Hz

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