Kohler Rada Thermotap-3 Bedienungsanleitung

11058907-W2-J

Thermotap-3

Important! This Manual is the property of the customer and must be

retained with the product for maintenance and operational purposes.

Product Manual

1058907-W2-J

CONTENTS

Safety : Warnings ....................................................................................3

Advice.......................................................................................................3

Introduction .............................................................................................4

Description...............................................................................................4

Dimensions ..............................................................................................5

Specication ............................................................................................6

Pressures/Flow Rates ..........................................................................6

Temperatures .......................................................................................7

Connections .........................................................................................7

Installation ...............................................................................................8

General.................................................................................................8

Flow Regulator Removal......................................................................9

Installation ..........................................................................................10

Commissioning ..................................................................................... 11

Exercising the Thermostat.................................................................. 11

Maximum Temperature....................................................................... 11

Flow Shut Off Setting .........................................................................12

Maximum Temperature Setting .......................................................... 13

Operation ...............................................................................................14

Fault Diagnosis......................................................................................15

Maintenance...........................................................................................16

General...............................................................................................16

Maintenance Procedures ...................................................................17

Spare Parts ............................................................................................22

Customer Service.................................................................................. 24

If you experience any difculty with the installation or operation of your new

Thermostatic Mixer, please refer to ‘Fault Diagnosis’, before contacting Kohler

Mira Ltd. Our telephone and fax numbers can be found on the back cover of

this guide.

31058907-W2-J

The function of this thermostatic mixing tap is to deliver water consistently at a safe

temperature. This requires that:

1. It is installed, commissioned, operated and maintained in accordance with the

recommendations given in this Manual.

2. For Type 3 installations, valves are only to be used for applications covered by

their approved designations, refer to the TMV3 Requirements Manual.

3. Periodic attention is given, as necessary, to maintain the product in good functional

order. Recommended guidelines are given in section: 'Maintenance'.

4. Continued use of this product in conditions outside the specication limits given

in this Manual can present potential risk to users.

SAFETY : WARNINGS

The use of the word ‘failsafe’ to describe the function of a thermostatic mixing valve

is both incorrect and misleading. In keeping with every other mechanism it cannot

be considered as being functionally infallible.

Provided that the thermostatic mixing valve is installed, commissioned, operated

within the specication limits and maintained according to this Manual, the risk of

malfunction, if not eliminated, is considerably reduced.

Malfunction of thermostatic mixing valves is almost always progressive in nature

and will be detected by the use of proper temperature checking and maintenance

routines.

Certain types of system can result in the thermostatic mixing valve having excessive

‘dead-legs’ of pipework. Others allow an auxiliary cold water supply to be added

to the mixed water from the mixing valve. Such systems can disguise the onset of

thermostatic mixing valve malfunction.

Ultimately, the user or attendant must exercise due diligence to make sure that the

delivery of warm water is at a stable, safe temperature. This is particularly important

in such healthcare procedures as supervised bathing of patients unable to respond

immediately to unsafe temperatures.

SAFETY : WARNINGS

ADVICE

1058907-W2-J

INTRODUCTION

The Rada Thermotap-3 Lever operated sequential mixing tap is specied to meet the

highest standards of safety, comfort and economy as demanded by todays users.

The Rada Thermotap-3 is designed, manufactured and supported in accordance

with accredited BS EN ISO 9001:1994 Quality Systems.

This Manual covers all Rada Thermotap-3 Lever operated sequential valves

manufactured from May 2003.

The sufx ‘3’ indicates that this mixer has been certied for use in UK Healthcare

premises as a Type 3 valve under the BUILDCERT TMV3 scheme. For Healthcare

installation refer to the TMV3 Requirements Manual.

The approved designations for Type 3 Valves are as follows:

Model Designation Code

Rada Thermotap-3 HP-WE, LP-WE

Guarantee

We guarantee this product against any defect in materials or workmanship for a

period of one year from the date of purchase. For terms and conditions refer to the

back cover.

The Rada Thermotap-3 is a lever operated sequential mixing tap for basins

employing a temperature sensor to provide water at safe, constant temperatures

for handwashing.

It is suitable for use with single hole basins with hole sizes of between 26 - 36 mm

diameter.

Models are available with two congurations of inlet:

• Flexible Braided tails

• Rigid Inlet tails

Both types are supplied complete with two xing studs, backplate and two xing

nuts providing secure installation. Included are isolators, checkvalves, strainers

and ow regulators and they can be tted with either a short (100 mm) lever or long

(150 mm) lever, depending on the application.

DESCRIPTION

51058907-W2-J

DIMENSIONS

All Dimensions and Angles are Approximate.

Ø 26 - 36 mm

Short Lever 100 mm

Long Lever 150 mm

Short Lever 135 mm

Long Lever 140 mm

110 mm Max 30 mm

450 mm

180°

(15 mm Compression Fitting/1/2" BSP Male)

Flexible Tails Rigid Tails

1058907-W2-J

SPECIFICATION

Pressures/Flow Rates

For optimum performance, dynamic supply pressures should be nominally

equal.

Recommended Flow Rate: 4 - 8 litres/minute (with ow regulators tted).

Recommended Minimum Dynamic Supply Pressure: 0.1 bar (0.2 bar

healthcare).

Note! For dynamic supply pressures below 0.4 bar we recommend removal of the

ow regulators to allow increased ow.

Maximum Static Supply Pressure: Flexible Inlet Tails 6 Bar.

Rigid Inlet Tails 10 Bar

Maximum Inlet Pressure Differential: should not exceed 3:1, in favour of either

supply, during ow.

Normal Operating Conditions are considered as:

• inlet dynamic pressures nominally balanced to within 10% of each other

during ow

• a differential of approximately 50°C between the hot and cold inlet temperatures,

and with differentials of 15 - 35°C between the blend setting and either supply

• daily usage of 1-6 hours

• installation and usage environment not subject to extremes of temperature,

unauthorised tampering or wilful abuse.

Other Applications

For information on other specic applications or suitability, refer to Kohler Mira Ltd,

or Local Agent.

Disinfection

In applications where system chemical disinfection is practised, chlorine can be

used (calculated chlorine concentration of 50 mg/l (ppm) maximum in water, per one

hour dwell time, at service interval frequency). Such procedures must be conducted

strictly in accordance with the information supplied with the disinfectant and with all

relevant Guidelines/Approved Codes of Practice. If in any doubt as to the suitability

of chemical solutions, refer to Kohler Mira Ltd, or Local Agent.

Operating Parameters

For Type 3 valves the supply conditions specied in the TMV3 Requirements Manual

take precedence over the operating parameters which follow.

71058907-W2-J

Temperatures

Optimum performance is obtained when temperature differentials of 20°Cor more

exist between blend and either supply. Blend control accuracy will begin to diminish

at temperature differentials below 10°C.

Blend Temperature Range: between ambient cold and approximately 45°C,

according to hot water supply temperature.

Recommended Minimum Cold Water Supply Temperature: 5°C.

Recommended Maximum Hot Water Supply Temperature: 65°C.

Note! The Thermotap-3 can accept temporary temperature excursions up to 85°C

without damage, however operation at such elevated supply temperatures is not

recommended. For reasons of general safety, hot water storage temperatures

should ideally be maintained at between 60 - 65°C where serving ablutionary

applications.

Connections

Hot and cold inlet supply connections are via 15 mm compression ttings or 1/2" BSP

male provided on the inlets to the isolating valves. Where exible inlet tails are

chosen, the red hose is connected to the threaded hole on the tap marked with a

RED label adjacent to the hole (nearest to spout).

Flow Rate v Supply Pressure.

1058907-W2-J

INSTALLATION

General

Installation must be carried out in accordance with these instructions and must

be conducted by designated, qualied and competent personnel.

Before commencing, make sure that the installation conditions comply with the

information given in section: 'Specications'. For Type 3 valves see also Installation

conditions in The TMV3 Requirements Manual.

The installation must comply with the “Water Supply (Water Fittings)

Regulations or Scottish Byelaws” or any particular regulations and practices,

specied by the local water company or water undertakers.

1. Care must be taken during installation to prevent any risk of injury or

damage.

2. The hole in the basin must be a minimum of 26 mm up to a maximum of 36 mm

diameter, with a basin thickness of 30 mm maximum.

3. The Thermotap-3 should be positioned for easy access during use and

maintenance. All routine maintenance procedures can be conducted with the

Thermotap-3 body in place.

4. Inlet pressure tappings which allow measurement of the inlet pressures to

the mixing valve under operating conditions are particularly recommended for

healthcare applications with Type 3 valves.

5. Pipework dead-legs should be kept to a minimum. The overall length from the

hot water circuit to the discharge point should not exceed 5 m.

6. Supply pipework layout should be arranged to minimise the effect of hydraulic

restriction or other outlet usage upon the dynamic pressures at the Thermotap-3

inlets. Recommended minimum supply line pipe diameter is 8 mm.

7. For Dynamic Supply Pressures below 0.4 bar we recommend removal of the

ow regulators to allow increased ow.

8. To eliminate pipe debris it is essential that supply pipes are thoroughly

ushed through before connection to the Thermotap-3.

91058907-W2-J

Flow Regulator Removal

Checkvalve

Assembly

Flow

Regulator

1. Isolate the hot and cold supplies with

the isolating valves.

2. Disconnect the flexible hoses or

rigid inlet tails as applicable, by

unscrewing the union nuts. Retain

the sealing washer or replace if

necessary.

3. Unscrew the checkvalve housing

from the isolating valve. Remove the

ow regulator using long nose pliers

or a small screwdriver.

4. Reassembly is reverse of the above,

ensure the strainer is clean before

replacing.

Flow Regulator Removal

Note! This procedure is only necessary when the dynamic supply pressure is below

0.4 bar.

1058907-W2-J

Thermotap-3 Installation

'O' Seal

30 mm

Maximum

Backplate

(Reverse to suit

smaller basin hole)

Fixing Nuts

Rigid Tail

option

Washer

Checkvalve

Assembly

Strainer

Isolating

Valve

Fixing Studs

26 to 36 mm

Diameter

Union Nut

Flexible

Tail option

Installation

1. Screw the xing studs fully into the

Thermotap-3 body.

2. Place the 'O' seal in the groove in

the base of the Thermotap-3 body.

3. Place either rigid or exible inlet

tail through one of the larger holes

in the backplate, orientate the

backplate to suit the hole size in

the basin.

5. Working underneath the basin

offer the inlet tail up through the

hole in the basin.

4. Screw inlet tail (if using exible

type, red coloured hose) into the

Thermotap-3, hole marked with a

RED label (nearest the spout) and

tighten. Position tap on basin.

5. Pull the backplate over the xing

studs.

6. Working underneath the basin,

locate other inlet tail (blue

coloured flexible hose)through

backplate then screw and tighten

into remaining hole in tap, spread

tails apart slightly if necessary to

assist in tting.

7. Make sure that the Thermotap-3

is correctly positioned and screw

the fixing nuts onto the fixing

studs. Tighten the fixing nuts

until the tap is secure. DO NOT

OVERTIGHTEN.

8. Connect the isolating valves

to the supply pipework. Fit the strainer into the isolating valve and screw in

the checkvalve housing. Use a suitable spanner to tighten the checkvalve

assemblies.

9. Locate the sealing washers inside the nuts on the inlet tails and screw onto the

checkvalve assemblies. Please ensure that the inlet tail (red coloured exible

hose) previously connected to hole marked with a RED label is connected to

hot supply. Use a suitable spanner to tighten the union nuts.

10. Restore the water supplies and check all connections are watertight. Refer to

section 'Commissioning'.

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