rada Safetherm Product Manual
1
IMPORTANT
Installer: This manual is the property of the customer
and must be retained with the product for maintenance
and operational purposes.
PRODUCT MANUAL
Safetherm
rada
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CONTENTS
Introduction .............................................................................................3
Safety : Warnings ....................................................................................3
Pack Contents Checklist ........................................................................5
Specications .......................................................................................... 7
Pressures .............................................................................................7
Temperatures ....................................................................................... 7
Thermostatic Shut-down ......................................................................8
Connections .........................................................................................8
Important Points ...................................................................................8
Dimensions .........................................................................................10
Installation ............................................................................................. 11
Panel Mounting ..................................................................................12
Basin Mounting ...................................................................................14
Operation ...............................................................................................16
Commissioning .....................................................................................17
Maximum Temperature Setting ..........................................................17
Fault Diagnosis ......................................................................................19
Maintenance ...........................................................................................21
Planned Maintenance.........................................................................21
Thermostatic Cartridge Renewal ........................................................22
Filter Renewal ....................................................................................23
Checkvalve Cartridge Renewal .......................................................... 24
Spare Parts ............................................................................................25
Notes ......................................................................................................27
Customer Care .......................................................................................28
3
Warning!
Products manufactured by us are safe provided they are installed, used and maintained
in good working order in accordance with our instructions and recommendations.
Caution!
1. Read all of these instructions.
2. Retain this guide for later use.
For Type 3 installations, valves are only to be used for applications covered by
their approved designations, refer to the TMV3 Requirements Manual.
3. Pass on this guide in the event of change of ownership of the installation
site.
4. Follow all warnings, cautions and instructions contained in this guide.
5. The plumbing installation must comply with the requirements of UK Water
Regulations/Bye-laws (Scotland), Building Regulations or any particular
regulations and practices, specied by the local water supplier. The installation
should be carried out by a plumber or contractor who is registered or is
a member of an association such as:
i) Institute of Plumbing (IOP), throughout the UK.
Congratulations on purchasing a quality Rada product. To enjoy the full potential of
your new product, please take time to read this guide thoroughly; having done so,
keep it handy for future reference.
The Rada Safetherm is an exposed thermostatic control for connection to entry
pipework from various directions. The thermostatic control incorporates a wax capsule
temperature sensing unit. This provides an almost immediate response to changes
in pressures or temperature of the incoming water supplies to maintain the selected
temperature. An adjustable maximum temperature stop is provided which limits the
temperature to the desired level. The Safetherm also includes checkvalves, lters
and inlet ow regulators limiting the outlet ow to 8 L/Min.
The Rada Safetherm has been certied for use in UK Healthcare premises as a
Type 3 valve under the BUILDCERT TMV3 scheme. For Healthcare* installations
refer to the TMV3 Requirements Manual. This product also complies with the Water
Supply (water ttings) Regulations 1999.
*Healthcare applications are hospitals, aged person facilities, residential care homes,
etc. and any other application where the user is similarly at risk.
The approved designations for Type 3 Valves are as follows:
Model Designation Code
Rada Safetherm HP-WE, LP-WE
INTRODUCTION
SAFETY : WARNINGS
4
ii) National Association of Plumbing, Heating and Mechanical Services
Contractors (NAPH & MSC), England and Wales.
iii) Scottish and Northern Ireland Plumbing Employers’ Federation (SNIPEF),
Scotland and Northern Ireland.
6. Anyone who may have difculty understanding or operating the controls of any
appliance should be attended whilst operating. Particular consideration should
be given to the young, the elderly, the inrm, or anyone inexperienced in the
correct operation of the controls.
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 specication 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.
Safetherm Options
The following table indicates temperature control options available for the
Safetherm.
Installation Temperature Adjustment Description
Panel Adjustable Temperature Control
Safetherm
Basin Adjustable Temperature Control
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PACK CONTENTS CHECKLIST
1 x Safetherm Tap Control
(Panel Mount)
1 x TMV3 Requirements
Manual
1 x ‘O’ Key
2 x Olives
2 x Compression Nuts
2 x Back Nuts
Tick the appropriate boxes to familiarize yourself with the part names and to
conrm that the parts are included.
Safetherm Panel
1 x 2.5 mm A/F
Hexagon Wrench
1 x 3 mm A/F
Hexagon Wrench
2 x 'O' Seals
1 x Flat Face
Connector Pack
2 x Grub Screws
2 x Inlet
Connector
2 x Concealing
Shroud
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6
Safetherm Basin
1 x Safetherm Tap Control
(Basin Mount)
2 x Olives
2 x Compression Nuts
2 x Back Nuts
1 x ‘O’ Key
1 x 2.5 mm A/F
Hexagon Wrench
1 x 3 mm A/F
Hexagon Wrench
2 x 'O' Seals
2 x Grub Screws
2 x Large Rubber Washer
2 x Deck Mount Ring
2 x Deck Mount Plate
2 x Back Plate
1 x Flat Face
Connector Pack
2 x 'O' Seals
2 x Inlet
Connector
2 x Concealing
Shroud
2 x Extension
Sleeve
2 x Extension
Tube
1 x TMV3 Requirements
Manual
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7
SPECIFICATIONS
For Type 3 Valves, the supply conditions specied in the TMV3 Requirements Manual
take precedence over the operating parameters which follow.
Pressures
• Max Static Pressure: 10 Bar.
• Max Maintained Pressure: 5 Bar.
• Min Maintained Pressure (Gravity System): 0.1 Bar.
(0.1 bar = 1 Metre head from cold tank base to tap outlet).
• For optimum performance supplies should be nominally equal.
Temperatures
• Factory Pre-set (Blend): 41°C.
• Optimum Thermostatic Control Range: 35°C to 43°C (achieved with supplies
of 15°C cold, 65°C hot and nominally equal pressures).
• Recommended Hot Supply: 60°C to 65°C Note! The thermostatic control
can operate at higher temperatures for short periods without damage,
however this could detrimentally affect thermostatic performance. For safety
and performance reasons it is recommended that the maximum hot water
temperature is limited to 65°C.
• Cold Water Range: up to 25°C.
• Minimum Recommended Differential between Hot Supply and Outlet
Temperature: 12°C.
• Please refer to section: ‘Type 3 Valves - Application for Type 3 Valves.
0
1
2
3
4
5
6
7
8
01 23
45
Supply Pressure (bar)
Flow Rate (l/min)
0.5
1.52.5 3.54.5
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Thermostatic Shut-down
• For safety and comfort the thermostat will shut off the thermostatic control
within 2 Seconds if either supply fails (achieved only if the blend temperature
has a minimum differential of 12°C from either supply temperature).
Connections
• Inlets: 15 mm Compression or 1/2" BSP at face.
• Standard connections are: hot - left, cold - right.
• The inlet connectors are xed at 200 mm centres.
Important Points
1. The installation, commissioning and maintenance of this product must be
carried out in accordance with the instructions given in the manual, and must
be conducted by designated, qualied and competent personnel.
2. Installations must comply with all Local/National Water Supply Authority
Regulations/Bye-laws, and Building and Plumbing (UK:BS6700) Regulations.
3. Rada products are precision engineered and should give continued and superior
performance, provided:
a. They are installed, commissioned, operated and maintained in
accordance with these recommendations
b. Periodic attention is given as necessary to maintain the product in
good functional order. Recommended guidelines are given in section:
‘Maintenance’.
4. Warning! Continued use of this product in conditions outside the limits listed
in this section can severely affect the performance and reduce the effective
service life, and can present potential risk to users.
5. Suitable for use with most modulating instantaneous gas water heaters.
For information on other specic applications or suitability, contact Kohler Mira
Ltd or your local agent.
6. Disinfectants and Other Chemicals: 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 all
relevant Guidelines/Approved Codes of Practice.
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Note! the use of ammonia or any ammonia type chemicals ( e.g. as found in
some solder uxes) can attack brass material which may lead to premature
failure.
If in any doubt as to the suitability of chemical solutions, contact Kohler Mira
Ltd or your local agent.
Normal Operating Conditions are considered as:
1. Inlet dynamic pressures nominally balanced to within ten percent of each other
during ow.
2. 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.
3. Daily usage of 1 - 6 hours.
4. Installation and usage environment not subject to extremes of temperature,
unauthorised tampering or willful abuse.
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