Rheem XWELL XC-10 Document technique

This water heater must be installed and serviced by a qualified person.

Please leave this guide with the householder.

Owner’s Guide

and

Installation Instructions

MODELS

XC-10, XC-15, XC-30

XS-20, XS-30

Rheem XWELLTM

Electric Storage Water Heaters

An electronic copy of these Owner’s Guide and Installation Instructions

can be downloaded from rheemasia.com

PATENTS

This water heater may be protected by one or more patents or registered designs

in the name of Rheem Vietnam Ltd.

TRADEMARKS

® Registered trademark of Rheem Manufacturing Company.

TM Trademark of Rheem Manufacturing Company (Singapore) Pte Ltd.

Note: Every care has been taken to ensure the accuracy in preparation of this

publication. No liability can be accepted for any consequences,

which may arise as a result of its application.

CONTENTS

HOUSEHOLDER

This booklet contains important information about your new water heater.

We recommend you read pages 3 to 11.

The other pages are intended for the installer but may be of interest.

Contents ............................................................................................. 2

Safety, Warnings and Pressure Relief Valve .................................. 3

About Your Water Heater .................................................................. 5

Maintenance Requirements .............................................................. 8

Save A Service Call ......................................................................... 10

Installation – General ...................................................................... 12

Connections – Plumbing ................................................................. 17

Connections – Electricity ................................................................ 20

Commissioning ................................................................................ 21

Draining The Water Heater .............................................................. 22

Warranty ........................................................................................... 24

SAFETY, WARNINGS AND PRESSURE RELIEF VALVE

It is important you read the following safety and warning informations before using

the water heater.

SAFETY AND WARNINGS

 This water heater is only intended to be operated by persons who have the

experience or the knowledge and the capabilities to do so.

 This water heater is not intended to be operated by persons with reduced

physical, sensory or mental capabilities i.e. the infirm, or by children. Children

should be supervised to ensure they do not interfere with the water heater.

 If the power supply cord is damaged, it must be replaced by a qualified person in

order to avoid a hazard. The power supply cord must be replaced with a genuine

replacement part available from Rheem. Phone Rheem Service or the nearest

authorised Service Agent to arrange for an inspection.

 Do not modify the power supply cord, or immerse it in water, or remove it from the

water heater.

 Take care not to touch the power lead with wet hands.

 This water heater uses 220-240 V a.c. power for the electrically operated

components. The removal of the electrical cover will expose 220-240 V a.c.

wiring. Covers must only be removed by a qualified person.

 This water heater is supplied with a thermostat, an over-temperature cut-out and

a pressure relief valve. These devices must not be tampered with or removed.

The water heater must not be operated unless each of these devices is fitted and

is in working order.

The Rheem warranty may not cover faults if the pressure relief valve or

other safety devices are tampered with or if the installation is not in

accordance with these instructions.

 The operation of the over-temperature cut-out indicates a possibly dangerous

situation. If the over-temperature cut-out operates, it must not be reset and the

water heater must be serviced by a qualified person.

 An isolation switch(s) must be installed in the electrical circuit to the water heater

in accordance with the local electrical standards, so the water heater can be

switched off.

 A pressure relief valve is supplied with the water heater and must always be

installed.

Refer to “Pressure Relief Valve” on page 4.

 This water heater must be hung on a wall using the supplied wall brackets and

with the water connections on the underside.

SAFETY, WARNINGS AND PRESSURE RELIEF VALVE

 Do not use an upward force from underneath the water heater. Pushing the water

heater from underneath may cause it to come loose from its mounting brackets

and fall off the wall.

 This water heater is intended to be permanently connected to the water mains

and not connected by a hose-set.

 The water heater is supplied with a pressure relief valve with a pressure rating of

800 kPa. If the mains supply pressure exceeds 640 kPa, a pressure limiting valve

must be installed.

 For continued safety of this water heater it must be installed, operated and

maintained in accordance with the Owner’s Guide and Installation Instructions.

 Servicing of a water heater must only be carried out by qualified personnel. Phone

Rheem Service or the nearest authorised Service Agent.

 Only a person qualified to install or service a water heater should drain the water

heater, if this is required.

 Do not modify this water heater.

PRESSURE RELIEF VALVE

The pressure relief valve is located at the cold

water inlet and is essential for the water

heater’s safe operation. It is possible for the

valve to discharge a quantity of water through

the drain line during each heating period, if a

non-return valve is installed on the cold water

line to the water heater.

Warning: Never block the outlet of the

valve or drain line for any reason. A pressure

relief valve drain must be left open to

atmosphere, be installed in a continuously

downward direction and in a frost-free

environment.

User Maintenance: The easing lever on the

pressure relief valve must be operated once

every six (6) months to clear any deposits and

ensure the valve and its drain line are not

blocked. It is very important the lever is

raised and lowered gently. Refer to “User

Maintenance Every Six Months” on page 8.

Warning: Failure to operate the easing lever on the pressure relief valve once

every six (6) months may result in the water heater cylinder failing.

lift until water

flows from the

drain line –

lower gently

drain

outlet

cold water

inlet

ABOUT YOUR WATER HEATER

MODEL TYPE

The Rheem XWELLTM water heater is suitable for indoor installation only. Water is

heated by an electric immersion heating unit with temperature control provided by a

thermostat. The thermostat and heating unit operate automatically when heating of

the water is required.

The vitreous enamel lined steel cylinder is provided additional corrosion protection by

a sacrificial anode and is surrounded by high density polyurethane foam to reduce

heat loss and increase performance efficiency. Designed for connection to a mains

pressure water supply, the water heater allows connection to more than one hot water

outlet. The supply pressure should be greater than 350 kPa for true mains pressure

operation to be achieved.

Automatic safety controls are fitted to the water heater to provide safe and efficient

operation.

TEMPERATURE ADJUSTMENT

The water heater features a user adjustable Temperature Dial which is connected to

the thermostat. Temperature adjustment is made by turning the Temperature Dial:

 clockwise to increase the water

temperature.

 anti-clockwise to decrease the

water temperature.

The position of the Temperature Dial

is relative to the dial setting mark:

 Set at the “” mark, heating of

water will not occur.

 Set at the “MAX” mark, the water

will be heated to the maximum

temperature of 70°C.

The Temperature Dial incorporates a white light which will either pulse or maintain a

steady glow.

Pulsing white light – Heating Mode: The heating unit is on and heating is taking

place. It is normal for the heating unit to turn on when hot water is being used, or

during standby heat up (recovering heat loss), or when the water heater is switched

on after having been off.

Steady white light – Ready Mode: The water temperature has reached the

thermostat temperature setting and the heating unit is off.

clockwise increases temperature

anti-clockwise decreases temperature

dial setting

mark

ABOUT YOUR WATER HEATER

HOTTER WATER INCREASES THE RISK OF SCALD INJURY

This water heater can deliver water at temperatures which can cause scalding. Check

the water temperature before use, such as when entering a shower or filling a bath

or basin, to ensure it is suitable for the application and will not cause scald injury.

We recommend and it may also be required by regulations that an approved

temperature limiting device be fitted into the hot water pipe work to a bathroom or

ensuite when the water heater is installed. This will reduce the risk of scald injury.

TO TURN OFF THE WATER HEATER

If you plan to be away from home for one or two nights, we suggest you leave the

water heater switched on.

If it is necessary to turn off the water heater:

 Switch off the electrical supply at the isolating switch (if installed) near the water

heater or outside of the bathroom, or at the water heater isolating switch on the

switchboard.

 Close the cold water isolation valve at the inlet to the water heater.

TO TURN ON THE WATER HEATER

 Open the cold water isolation valve fully on the cold water line to the water heater.

 Switch on the electrical supply or at the isolating switch (if installed) near the water

heater outside of the bathroom, or at the water heater isolating switch on the

switchboard.

GOING ON HOLIDAY?

If you plan to be away from home for one or two nights, we suggest you leave the

water heater switched on. However, if you plan to stay away more than a few nights,

conserve energy by switching the water heater off at the isolating switch (if installed)

near the water heater or outside of the bathroom, or at the water heater isolating

switch on the switchboard.

Note: When the electrical supply is switched back on, the water heater will take some

time to reheat the water.

ABOUT YOUR WATER HEATER

WATER CHEMISTRY ADVICE AFFECTING WARRANTY

The water heater and its components are not suitable for certain water chemistries.

Those chemistries are listed below. If the water heater is connected at any time to a

water supply with the following water chemistry, the Rheem warranty will not cover

any resultant faults on the components listed below:

Water Chemistry Component Not Covered

Total Dissolved Solids (TDS) > 600 mg/L water heater cylinder

Saturation Index (SI) < -2.0 incoloy corrosion resistant heating unit

Saturation Index (SI) > +0.8 incoloy corrosion resistant heating unit

Chlorides > 200 mg/L incoloy corrosion resistant heating unit

Contact your local Rheem Dealer if a replacement of the heating unit is required.

CAUTION

If the water supply has a Total Dissolved Solids (TDS) content greater than 600 mg/L,

there is the possibility the anode may become overactive and hydrogen gas could

accumulate in the top of the water heater during long periods of no use.

If, under these conditions, the water heater has not been used for two or more weeks

the following procedure should be carried out before using any electrical appliances

(automatic washing machines and dishwashers) which are connected to the hot water

supply.

The hydrogen, which is highly flammable, should be vented safely by opening a hot

tap and allowing the water to flow. There should be no smoking or naked flame near

the tap whilst it is turned on. Any hydrogen gas will be dissipated. This is indicated

by an unusual spurting of the water from the tap. Once the water runs freely, any

hydrogen in the system will have been released.

MAINTENANCE REQUIREMENTS

USER MAINTENANCE EVERY SIX MONTHS

It is recommended user maintenance be performed every six (6) months by the

dwelling occupant. The user maintenance includes:

 Pressure Relief Valve – Operate the easing lever on the pressure relief valve. It

is very important the lever is raised and lowered gently. Refer to “Pressure

Relief Valve” on page 4.

Ensure a drain line is fitted to the pressure relief valve outlet and the discharge

water is directed to the drain.

Warning: Exercise care to avoid any splashing of water by standing clear of

the drain line’s point of discharge when operating the valve’s easing lever.

If water does not flow freely from the drain line when the lever is lifted, then the

water heater must be checked. Phone Rheem Service or the nearest authorised

Service Agent to arrange for an inspection.

 Safety Device (On selected models) – Test the Safety Device (Earth Leakage

Circuit Breaker) fitted to the power cord. To test the Safety Device:

 Ensure the power outlet to the water heater is switched on.

Indicator Light (B) will be on.

 To test, push Test button (A). Power will cut off, Indicator Light (B) will turn off

and Reset button (C) will pop up.

Note: If the Indicator Light (B) remains on, the safety device is not working

properly. Turn the water heater off at the power outlet and call for service.

 To reset, push Reset button (C). Power will be reinstated and Indicator Light

(B) will turn on.

Note: If the Indicator Light (B) remains off, the water heater is not working

properly. Turn the water heater off at the power outlet and call for service.

Safety Device (ELCB)

B C

MAINTENANCE REQUIREMENTS

MAJOR SERVICE EVERY FOUR YEARS

It is mandatory a major service be conducted on the water heater every four (4) years.

The pressure relief valve should be replaced at intervals not exceeding four (4) years.

The checking of the valve performance or replacement should occur more frequently

in areas where there is a high incidence of water deposits.

Warning: Servicing of a water heater must only be carried out by qualified

personnel. Phone Rheem Service or the nearest authorised Service Agent.

Note: The major service and routine replacement of any components, such as the

anode and pressure relief valve, are not included in the Rheem warranty. A charge

will be made for this work. Only genuine replacement parts should be used on this

water heater.

The major service includes the following actions:

 Replace the pressure relief valve at regular intervals, such intervals not exceeding

four (4) years.

 Inspect and if there is any sign of depletion, replace the anode.

If the anode is not replaced, it must be replaced within four (4) years of this

service.

 Check the electric heating unit for excessive calcium build-up or corrosion and

replace if necessary.

 Visually check the unit for any potential problems.

 Inspect all connections.

Note: The water heater may need to be drained during this service. After the

completion of the service, the water heater will take some time to reheat the water.

SAVE A SERVICE CALL

Check the items below before making a service call. You will be charged for attending

to any condition or fault that is not related to the manufacture or failure of a part.

NO WATER FLOW FROM THE HOT TAP

 Is the isolation valve open?

Check the isolation valve on the cold water line to the water heater is open?

Check if there is water available from other taps in the premises.

If water continues to not be available, phone a plumber.

WATER FROM HOT TAP IS NOT HOT OR NOT HOT ENOUGH

 Is the electricity switched on?

Inspect the isolating switch marked “HOT WATER” or “WATER HEATER” at the

switchboard and at the isolating switch (if installed) near the water heater or

outside of the bathroom and ensure they are turned on.

Check the fuse or circuit breaker marked “HOT WATER” or “WATER HEATER”

at the switchboard.

 Thermostat setting

Ensure the thermostat setting is appropriate. Adjust the temperature dial to gain

additional hot water capacity.

Refer to “Temperature Adjustment” on page 5.

Warning: Hotter water increases the risk of scald injury.

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