Related Manuals for Kohler rada Exact-3 B
Summary of Contents for Kohler rada Exact-3 B
- Page 1 Exact-3 B These instructions must be left with the user Product Manual 1057614-W2-D...
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Page 2: Safety Warnings
All Rada Exact-3 B are designed, manufactured and supported in accordance with accredited BS EN ISO 9001:2008 Quality Systems. This manual covers all Rada Exact-3 B Thermostatic shower controls manufactured from January 2014. 1057614-W2-D... - Page 3 A 1/2" inlet/outlet thermostatic shower control employing a thermostatic temperature sensor to provide water at safe, accurate temperatures for ablutionary or process requirements. Rada Exact-3 B - 1/2” built-in thermostatic shower control for concealed pipework, incorporating either chrome control knobs or white plastic lever controls. DIMENSIONS...
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Page 4: 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 Foam Seal 1 x Valve Body 1 x Building-in Shroud 2 x Countersunk Fixing Screws 2 x Wall Plugs ... -
Page 5: Specification
- 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 specific 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). - Page 6 *Pressure Loss Ratio is determined by subtracting the resistance to flow at the outlet (generally known as “back pressure”, and measured at the outlet of the mixing tap) from the dynamic pressures of the hot and cold water at each inlet of the mixing tap. This is at its extreme when the mixing tap is being used at its lowest flow rate and when the maximum inequality occurs in the pressure of the hot and cold water supplies.
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Page 7: Flow Control
The outlet connector is designed to accept: Flat-faced / flanged unions (maximum flange diameter 20 mm); use flat-faced insert (408 71, supplied) 15 mm pipework; use compression olive (542 10). Connections: Rada Exact-3 B - Inlets and Outlet: 1/2” BSP external union or 15 mm compression (nut and olive provided). Inlet/ Outlet Options: INLETS: OUTLET:* Exact-3 B... -
Page 8: Installation
INSTALLATION General Installation must be carried out in accordance with these instructions, and must be conducted by designated, qualified and competent personnel. The installation must comply with the “Water Supply (Water Fittings) Regulations or Scottish Byelaws” or any particular regulations and practices, specified by the local water company or water undertakers. Before commencing, make sure that the installation conditions comply with the information given in section: ‘Specifications’. For Type 3 valves, see also installation conditions in the TMV3 Requirements Manual. - Page 9 Should the existing hot and cold pipework make this configuration inconvenient, or a bottom outlet position be required, the inlets can be reversed. If both the outlet and inlet positions require reversing, it is easier to simply rotate the complete mixing valve through 180 Outlet Reversal must be done prior to installation of the mixing valve body. Rotate the valve body through 180 so that the outlet is in the opposite position.
- Page 10 12. The maximum temperature may now need resetting; check, and if necessary refer to COMMISSIONING. Installation - solid wall recess The Rada Exact-3 B is suitable for building-in to solid, dry-lined, stud partition or dry partition wall structures. To allow for connection of pipework, the recess in the wall (unfinished) should be approximately the same shape as the building-in shroud. Place the building-in shroud in the correct position on the wall and draw around it with a pencil.
- Page 11 The backplate assembly is provided with a foam seal on its rear face, which mates with the wall surface and reduces the possibility of water penetration into the recess. Should the wall surface or tiling be uneven, this seal will not be fully effective and should be assisted / substituted by silicone sealant.
- Page 12 Mounting Bracket Solid Wall Mounting Bracket Fixing Screw Panel Fixing Hole Screw Hole Fixing Screw Fixing Screw Finish thickness 2 - 10mm Finish thickness 11 - 17mm Installation - Reversal Of Mounting Bracket Figure 2 Installation - Panel (less than 16 mm) The Exact-3 B incorporates a mounting bracket, enabling the valve to be installed through a laminated panel or shower cubicle.
- Page 13 135 mm 135 mm 124 mm 124 mm 43 mm 55 mm Panel Panel 12 mm 12 mm Installation To Panels 2 - 10 mm Thick Installation To Panels 11 - 15 mm Thick Installation - Panel Figure 3 Installation - Panel (16 mm +) Note! The mounting bracket can also be mounted to the front face of thicker panels which will receive a further finishing layer of 2 - 17 mm thickness. If this further finishing...
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Page 14: Exercising The Thermostat
COMMISSIONING Commissioning must be carried out in accordance with these instructions, and must be conducted by designated, qualified and competent personnel. Exercising the Thermostat Thermostatic mixing valves are inclined to lose their responsiveness if not used. Valves which have been in storage, installed but not commissioned, or simply not used for some time should be exercised before setting the maximum temperature or carrying out any tests. -
Page 15: Commissioning Checks
- If the outlet temperature is set correctly then refer to Commissioning Checks. - If adjustment of the temperature is required, carry out the procedure shown below; Remove the temperature knob, using the 3 mm A/F hexagonal wrench (supplied). Pull off the temperature hub. Rotate the spindle until the required maximum blend temperature is obtained at the discharge point (clockwise = decrease temperature). -
Page 16: Operation
It is advisable to establish a performance check at this time, which should be noted for future reference as part of a Planned Maintenance Programme (a Maintenance Record Card has been provided with this Manual). The procedure should be chosen to imitate both typical and difficult operating conditions, such as any supply pressure fluctuations that may be likely. An ideal method is to locate another outlet on the common cold water supply close to the shower control (operating this outlet should cause a drop in supply pressure), and note the subsequent effect on blend temperature (should be no more than 2°C change). -
Page 17: Fault Diagnosis
FAULT DIAGNOSIS Symptom Cause/Rectification a. Inlet supplies reversed (see reversed inlets section). Check. 1. Only hot or b. No hot water reaching shower control. Check. cold water c. Check strainers and inlet/outlet fittings for blockage. from outlet. d. Refer symptom 5 below. e. Installation conditions continuously outside operating parameters: refer to SPECIFICATION, and 2e below. -
Page 18: Planned Maintenance
Symptom Cause/Rectification 7. Water Seal(s) worn or damaged. leaking from a. Obtain service pack and renew all seals. shower b. (If leak persists from around temperature spindle) Renew control body. Thermostatic cartridge. a. Impaired free movement of internal components. Renew the 8. - Page 19 Part Number Description 1578.046 Thermostatic Cartridge Lubricants Silicone based lubricants must only be used on the rubber seals. Caution! Oil based or other lubricant types may cause rapid deterioration of seals. Cleaning The chrome plated parts should be cleaned using a mild washing up detergent or soap solution, rinsed and then wiped dry with a soft cloth.
- Page 20 Removal Clip Thermostatic Temperature Cartridge Assembly Locking Screw Knob 3 mm A/F Hexago- nal Wrench Head Nut Foam Seal (Adhesive Inlet Port Seals Backed) Temperature and flow knobs are also available with a short lever. Thermostatic Cartridge Removal Figure 1 Cleaning/Renewal of Parts 6. The interior surface of the shower control body must be clean before refitting cartridge. If scale or deposition is present, clean (without Thermostatic, flow and checkvalve cartridges fitted) using a mild proprietary inhibited scale solvent, e.g. domestic kettle descalent. After descaling, rinse body thoroughly in clean water before refitting cartridges.
- Page 21 Re-assembly 11. Identify which is the hot inlet to the shower control body, and align the Thermostatic cartridge accordingly. Carefully push the Thermostatic cartridge back into the body, checking that the 2 cartridge inlet port seals remain in place, and locate cartridge lugs into body slots. 12. Carefully align and then tighten the head nut; do not overtighten (max.
- Page 22 Examine accessible 'O' seals for signs of deformation or damage, and renew cartridge if necessary. Lightly coat all seals with a silicone-only based lubricant to assist reassembling. Re-assembly 5. Check that flow cartridge seals are in place. Align the cartridge and screw into place. Fit the splined adaptor. 7. Align and refit the body shroud and flow knob assembly, so that the markings will be visible to the user. Restore hot and cold supplies and check for any leaks.
- Page 23 Strainer Checkvalve Cartridge Rubber Retainer Checkvalve Cartridges Figure 3 Maintenance Procedure - Inlet Strainers Blockage of the inlet strainer screens can lead to poor flow performance and reduced temperature control. It is essential that the inlet strainer screens are cleaned or, if necessary, renewed as part of the six-monthly maintenance operations. A Strainer pack is available for the Exact-3 B, containing 2 strainer screens and 2 retainers.
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Page 24: Spare Parts
SPARE PARTS 1. Rada Exact-3 B Spare Parts List Part No. Description 427 30 Flow Cartridge Assembly 427 31 Spline Adaptor - Flow 427 32 Checkvalve Assembly 427 33 Filter 427 35 Temperature Hub 427 36 Mounting Bracket 427 37 Knob Assembly - Flow 427 38... - Page 25 2. Rada Exact-3 B Spare Parts Diagram 427 32 427 50 427 33 427 49 427 51 427 30 427 31 427 43 1578 046 427 44 427 35 427 36 427 38 427 37 427 47 427 45 427 46...
- Page 26 NOTES 1057614-W2-D...
- Page 27 1057614-W2-D...
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Page 28: Customer Care
E-mail: us for help and advice. CustomerServiceEire@mirashowers.com Rada is a registered trade mark of Kohler Mira Limited. The company reserves the right to alter product specifications without notice. 14648 © Kohler Mira Limited, 06/2016 1057614-W2-D...