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rada Autotherm-3 BSM Product Manual

Thermostatic bath shower mixer
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BSM
THERMOSTATIC BATH SHOWER MIXER
PRODUCT MANUAL
IMPORTANT
Installer: This Manual is the property of the customer
and must be retained with the product for
maintenance and operational purposes.
1

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Summary of Contents for rada Autotherm-3 BSM

  • Page 1 THERMOSTATIC BATH SHOWER MIXER PRODUCT MANUAL IMPORTANT Installer: This Manual is the property of the customer and must be retained with the product for maintenance and operational purposes.

  • Page 2: Table Of Contents

    CONTENTS Introduction ..................... 3 Description ....................3 Safety : Warnings ..................4 Pack Contents ..................5 Dimensions ....................6 Specifications ..................7 Installation ....................9 General ....................9 Installing the BSM ................10 Operation ....................12 Commissioning ..................13 Commissioning Checks ..............13 Maximum Temperature ...............

  • Page 3: Introduction

    USA: 2006-0124758-A1, 10/607 025 DESCRIPTION The Rada Autotherm-3 BSM is a fully Thermostatic Bath and Shower Mixer, with an integral Flow Control and Divertor. A patented temperature re-setting mechanism automatically reduces the maximum allowable temperature when diverting from bath to shower outlet (i.e. 44°C bath fill to below 41°C shower).

  • Page 4: Safety : Warnings

    SAFETY : WARNINGS Rada products are precision engineered and should give continued superior and safe performance, provided: They are installed, commissioned, operated and maintained in accordance with the recommendations given in this Manual. Type 3 Valves are only used for applications covered by their approved designations refer to the TMV3 Requirements Manual..

  • Page 5: Pack Contents

    PACK CONTENTS Tick the appropriate boxes to familiarize yourself with the part names and to confirm that the parts are included. 1 x Rada Autotherm-3 BSM 1 x Gasket 2 x Backnut Adaptors 2 x Backnuts 2 x Flexible Hoses...

  • Page 6: Dimensions

    DIMENSIONS G1/2" SHOWER G3/4" INLETS NOTE:- NOT TO SCALE - All dimensions are in millimetres...

  • Page 7: Specifications

    Inlet with 0.5 m long Hoses: 22 mm Compression fitting with Isolating Valves. Shower Outlet: 1/2" BSP Male. Rada Autotherm-3 is a fully Thermostatic Bath and Shower Mixer with an integral Flow Control and Divertor. It is recommended that Rada Autotherm-3 Shower Fittings are used with this BSM to optimise performance (refer to section: 'Accessories').
  • Page 8 Operating Parameters For Type 3 installations, valves are only to be used for applications covered by their approved designations, refer to the TMV3 Requirements Manual. Inlet Supply Pressure Maintained Inlet Pressures: 0.2 - 5 Bar Max. Static Pressures: 10 Bar Note: With low pressure systems (below 1 Bar) it may be necessary to remove the Flow Regulators fitted to the product as supplied, refer to section: 'Flow regulator Removal'.

  • Page 9: Installation

    For combination boilers only, a fourth (white) Flow Regulator is supplied with the product to make sure that the boiler can supply the Rada Autotherm-3 BSM with an adequate supply of hot water. This must be fitted in the hot inlet, refer to section: 'Flow Regulator Removal'.

  • Page 10: Installing The Bsm

    Installing the BSM The Rada Autotherm-3 BSM can be installed on most standard baths and deck surfaces (refer to illustration). Fit the Bath Sealing Gasket to the BSM with the arrow pointing forward. Carefully position on the bath (refer to illustration).
  • Page 11 For combination boilers only, a fourth (white) Flow Regulator is supplied with the product to make sure that the boiler can supply the Rada Autotherm-3 BSM with an adequate supply of hot water. This must be fitted in the hot inlet, refer to section: 'Flow Regulator Removal'.

  • Page 12: Operation

    OPERATION The Rada Autotherm-3 BSM is fitted with a separate On / Off Flow Divertor Lever and Temperature Control Knob which operate as follows: On / Off Flow Divertor From the Off position, anticlockwise movement immediately turns on the flow to bath mode, clockwise movement diverts the flow to shower mode.

  • Page 13: Commissioning

    All Rada Thermostatic Mixing Valves are fully performance tested individually and the maximum temperature for the Autotherm-3 BSM is pre-set under ideal installation conditions at the factory to approximately 44°C for bath fill and 41°C for showering.

  • Page 14: Maximum Temperature Setting

    Maximum Temperature Setting Note: For Type 3 valves in healthcare installations the maximum blend temperature is determined by the application, refer to the TMV3 Requirements Manual. Remove the Blanking Plug, unscrew the Grubscrew and remove the Temperature Control Knob. Unscrew the Hub Screw using a 3 mm hexagonal wrench (supplied) and remove the Temperature Control Hub.

  • Page 15: Fault Diagnosis

    FAULT DIAGNOSIS Read the section: Important Safety Information first. Provided that the BSM has been correctly installed and is operated in accordance with the instructions contained in this guide, difficulties should not arise. If any maintenance is required then it must be carried out by a competent tradesperson for whom the fault diagnosis chart and maintenance instructions are provided.
  • Page 16 Symptom Cause / Rectification Flow rate too low (Too low) Insufficient supply pressures. or too high. (Too low) Refer to symptom 2. (Too high) Supply pressure too high. Flow Regulators fitted incorrectly. Dripping from bath Remove the Flow Divertor Cartridge and check the or shower outlet.

  • Page 17: Maintenance

    The Autotherm-3 BSM is designed for the minimum of maintenance in normal use. If a malfunction occurs with either the Temperature Control Cartridge or the Flow Divertor Cartridge then this will necessitate a complete Cartridge replacement.
  • Page 18 Healthcare Healthcare applications are hospitals, aged person facilities, residential care homes, etc. and any other applications where the user is similarly at risk. Ultimately, the user or attendant must exercise diligence to make sure that the delivery of warm water is at a stable, safe temperature. This is particularly important in such procedures as supervised bathing where patients are unable to respond immediately to unsafe temperatures.

  • Page 19: Flow Regulator Removal

    For combination boilers a fourth (White) Flow Regulator is supplied with the product to make sure that the boiler can supply the Rada Autotherm-3 BSM with an adequate supply of hot water. This must be fitted in the hot inlet.
  • Page 20 Slip Ring White Inlet Flow Regulator (refer to illustration). Cover Shroud The fitting of this Flow Regulator Body Retaining will render the Rada Autotherm-3 Screws BSM outside the scope of the TMV3 scheme. Refit the hot inlet Non-Return Valve Body Housing and tighten with a spanner in a clockwise direction.

  • Page 21: Filter Cleaning/Replacement

    Filter Cleaning/Replacement Blockage of the Inlet Filters can lead to poor flow performance and reduced Temperature Control. It is essential that the Inlet Filters are periodically cleaned or, if necessary, renewed as part of a preventative maintenance programme. Turn off the hot and cold water supplies. Remove the Blanking Plug, unscrew the Grubscrew using a 3 mm hexagonal wrench and remove the Temperature Control Knob.
  • Page 22 Grubscrew Blanking Plug Temperature Control Knob Hub Screw Temperature Control Hub Flow Divertor Lever Shower Outlet Nipple Retaining Screws Flow Divertor Lever Slip Ring Cover Shroud Body Retaining Screws Body Filter Cap Manifold Filter...

  • Page 23: Maintaining The Non Return Valves

    Maintaining the Non Return Valves The Non Return Valves are located inside the Manifold and inside the Shower Outlet Nipple. Note: For showers only perform instructions 2 to 4. Turn off the hot and cold water supplies. Disconnect the Shower Hose and remove the Shower Outlet Nipple using the quad key (supplied) or a 12 mm hexagonal wrench.
  • Page 24 Grubscrew Temperature Blanking Plug Control Knob Hub Screw Temperature Control Hub Shower Outlet Nipple Flow Divertor Lever Retaining Screws Pink Flow Regulator Flow Divertor Lever Slip Ring Cover Shroud Body Retaining Screws Body Non-Return Valve Housing Green Flow Regulator Manifold...

  • Page 25: Removing The Thermostatic Cartridge

    Removing the Thermostatic Cartridge Turn off the hot and cold water supplies. Remove the Blanking Plug, unscrew the Grubscrew and remove the Temperature Control Knob. Unscrew the Hub Screw using the 3 mm hexagonal wrench (supplied) and remove the Temperature Control Hub. Remove the 2 Flow Divertor Lever Retaining Screws using the 3 mm hexagonal wrench and remove the Flow Divertor Lever.
  • Page 26 Grubscrew Temperature Blanking Plug Control Knob Hub Screw Temperature Control Hub Flow Divertor Lever Shower Outlet Nipple Slip Ring Cover Shroud Clamp Plate Screw (x4) Temperature Temperature Setting Control Gear Tool Flow Control Gear Temperature Stop Sleeve Idler Gear Clamp Plate Cartridge Spacer Thermostatic Cartridge Body...

  • Page 27: Cleaning And Reassembly Of The Thermostatic Cartridge

    Cleaning and Reassembly of the Thermostatic Cartridge The interior surface of the BSM Body must be clean before refitting the Cartridge. If scale or deposition is present clean using a mild proprietary inhibited scale solvent, e.g. domestic kettle descalent. After descaling, rinse interior thoroughly in clean water before refitting the Cartridge.
  • Page 28 Line up the Temperature Control Gear with the Cartridge Spacer, push on and rotate anti-clockwise through 180°. 10. Refit the Flow Control Gear and line up with Temperature Control Gear using the Temperature Setting Tool. 11. Refit the Idler Gear and tighten the Screw. Caution! Do not overtighten the Screw as damage may occur causing the Idler Gear to jam on the Bush.

  • Page 29: Replacement Of The Flow Cartridge

    Replacement of the Flow Cartridge Turn off the hot and cold water supplies. Remove the Blanking Plug, unscrew the Grubscrew and remove the Temperature Control Knob. Unscrew the Hub Screw using the 3 mm hexagonal wrench (supplied) and remove the Temperature Control Hub. Unscrew the 2 Flow Divertor Lever Retaining Screws using the 3 mm hexagonal wrench (supplied) and remove the Flow Divertor Lever.
  • Page 30 20. Refit the Flow Divertor lever and slip ring and tighten the 2 Flow Divertor lever retaining Screws. 21. Refit the Shower Outlet nipple and the Shower Outlet Hose. 22. Turn on the hot and cold water supplies and check for any leaks. 23.

  • Page 31: Spare Parts

    Cover Shroud 462.18 Inlet Hose (Not Illustrated) 1598.036 Flow Regulator Kit ACCESSORIES Available as optional accessories from your Rada stockist: 1533 115 Rada 3/4" Isolating Test Point 1533 117 Rada Autotherm-3 BSM Shower kit (category 3) 1533 118 Rada Autotherm-3 BSM Shower kit (category 5)
  • Page 32 462.12 462.13 1598.036 462.17 462.16 462.08 462.07 462.06 462.10 462.03 462.04 462.01 462.05...

  • Page 33: Notes

    NOTES...
  • Page 34 NOTES...
  • Page 35 NOTES...

  • Page 36: Customer Service

    Your product has the benefit of our manufacturer’s guarantee which commences from date of purchase or from the date of commissioning when product commissioning has been conducted within the UK by the Rada Commercial Field Service Team. Outside of the UK please contact your local agent for all guarantee terms and conditions or visit www.radacontrols.com for further information.

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