INSTALLATION & OPERATING INSTRUCTIONS
Contents
1.2. EE Mistral Pro heads INSTALLATION amp OPERATING INSTRUCTIONS INSTALLATION amp OPERATING INSTRUCTIONS INSTALLATION amp OPERATING INSTRUCTIONS Automatic Bypass Valves The Mistral Pro head Detailed technical information installation and operating instructions can be found in the Mistral Pro TRV section Mistral Pro remote sensor Detailed technical information installation and operating instructions can be found in the Mistral Pro TRV section Once the valve and head have been installed the remote sensor bulb should be fitted as follows 1 Fix the mounting bracket horizontally or vertically as required 2 Place sensor into the holder and snap the assembly into the mounting bracket 3 Lay the capillary tube 4 Carefully coil surplus capillary tubing on the reel provided and cover with protective cap Never attempt to cut or shorten the capillary tube Mistral Pro remote head Once the valve body has been installed adhering to the appropriate instructions the remote head should be fitted as follows 1 First ensure that the remote head will not be covered by curtains or furniture as this will adversely affect the performance of the thermostatic sensor 2 Carefully prise off the sensor cover with a screwdriver inserted through the drilling in the underside remove the cover from the base plate 3 Next fix the base plate to a flat wall or onto a 60mm wall box with the screws prov
3. rae sf 1 2 0 09 0 52 1 15 1 79 2 09 3 4 0 09 0 52 1 15 1 89 2 34 W N k C Mistral Pro Mistral Pro remote sensor remote head A B C A B C Size range The Mistral insert fitting tool is supplied in one size which fits all valves Operating instructions 1 Remove the thermostatic head from the valve body and retain for later use Next slightly loosen the valve insert with a 19mm box spanner and screw the fitting tool onto the valve body Ensure the green drain tap is closed at this point 2 Open the T handled ball valve and push the fitting tool spindle in engaging it positively on the valve insert Turn the assembly tool handwheel anti clockwise until the valve insert has been removed from the body and then slowly withdraw it as far as it will go Close the T handled ball valve 3 Open the green drain tap remembering to catch any waste water 4 Unscrew the spindle on the fitting tool remove the old valve insert and replace it with the new one Assemble the new insert into the valve body by reversing the removal procedure 5 After completion drain and remove the fitting tool and firmly tighten the valve insert with a 19mm box spanner Replace the thermostatic head and set to the desired position Contact Where the required room temperature is not reached or is not maintained installers should check the following 1 Is the radiator of sufficient size for t
4. rooms 4 In the event that a radiator needs to be removed we recommend fitting an additional blanking cap from the Mistral accessories range to the valve body This will prevent any possibility of unwanted water leakage Mistral manual Size range Mistral Manual radiator valves are available in three sizes 8mm x 1 2 BSP 10mm x BSP and 15mm x 1 2 BSP Building in dimensions for Mistral Manual fitted with wheelhead or lockshield There are two methods of assembling the Kuterlite ends of Mistral radiator valves Step 1a Insert the tube firmly into the compression fitting without removing the compression nut and ring ensuring that the compression ring seats centrally and that the tube makes firm contact with the tube stop in the body of the fitting Remove the compression nut and compression ring and put the nut and then the ring on the tube Insert the tube end up to the tube stop in the fitting ensuring that the compression ring seats centrally Slide both ring and nut up to the fitting body sie A B 59mm 30mm 54mm 59mm 30mm 54mm 59mm 30mm 54mm Installation See general installation instructions Working pressures and temperatures Maximum Maximum Temperature Pressure 8mm 10mm 15mm 120 C 10 bar FPG Pegler Yorkshire Step 2 Tighten the nut by finger and then by spanner until the tube cannot be rotated in the fitting by hand Always use a high quality open ended or ad
5. shooting Installation Fit appropriate valve bodies to the radiator making sure that the direction of the arrows as indicated on the valve body follows the direction of the water flow Once installed unscrew the black protective cap from the thermostatic valve body only when ready to fit the selected thermostatic head Where Mistral Pro lockshield valves have been installed contractors may balance the system using the white lockshield valve cap provided Adjustment of the valve is achieved by inverting the white lockshield cap which is then located in the lugs found on the valve insert Adjust as necessary by turning the valve clockwise to close and anti clockwise to open Drain off facility Where Mistral Pro lockshield valves have been installed contractors may drain individual radiators without draining the whole system using a combination of the Mistral drain off valve and the discreet in built drain off facility incorporated within each Mistral Pro lockshield valve as follows Close the valve by first inverting the white lockshield cap which is then located in the lugs found on the valve insert Turn clock wise until no further movement is possible Before locating the drain valve ensure that a suitable vessel or hose is available to capture the fluid held within the radiator Attach the drain off valve by first withdrawing the central black knob and continue until satisfied that the valve is fully secure Lo
6. INSTALLATION amp OPERATING INSTRUCTIONS INSTALLATION amp OPERATING INSTRUCTIONS INSTALLATION amp OPERATING INSTRUCTIONS Introduction The following information is provided to ensure that users achieve the maximum benefit from their Mistral radiator valves Please read these general installation instructions carefully before proceeding Further detailed instructions are found in individual product sections To ensure that Mistral TRVs function correctly i e provide individual room temperature control the central heating system and all radiators installed should provide sufficient heat to raise room temperatures to maximum required levels TRVs should not be used in areas where individual room thermostats already provide temperature control or where central thermostatic control of the system is located Kv and Kvs values The Kv value of a valve as displayed in this document indicates the volume of flow in m3 h at a determined stroke control difference and a pressure loss of 1 0 bar The Kvs value indicates the volume of flow when the valve is completely open Temperature settings The following diagram shows the relationship between the settings on the Mistral and Mistral Pro TRV head and the approximate room temperature achieved 0FL 6 C Frost protection 10 12 C Stairway 14 C Night time 15 18 C Bedroom 19 22 C Living dining 22 25 C Bathroom 26 29 C Swimming pool
7. Mistral General installation Preliminaries 1 Select the appropriate Mistral product for installation Ensure that the size of body chosen will allow sufficient flow of water to meet the heat demands of the room Also ensure that the valve chosen is correct for the pipe size used in the installation 2 Prior to installation ensure the system is free from debris and contamination 3 The black protective cap supplied with Mistral and Mistral Pro TRVs can be used as a temporary ON OFF controller before the thermostatic sensor head is fitted It can also be used as a decorators cap 4 All Mistral and Mistral Pro TRVs are calibrated in controlled conditions where position IIl equates to approximately 20 C Installation 1 Fit the union tail to the radiator ensuring that sufficient PTFE tape or other suitable sealant is applied to the threads Connect the valve body to the union tail making sure that the direction of the arrows on the valve body follows the direction of the water flow Connect the pipe to the radiator valve following steps 1a 3 adjacent 2 Unscrew protective black cap when ready to fit the Mistral TRV head Before fitting thermostatic heads adjust setting to position IlIll then fit to the valve body and screw down tightening nut until secure 3 When the installation is complete and the system is running normally adjust the thermostatic heads to the preferred setting in individual
8. ber III on the scale with the setting arrow and press firmly to snap the cover back into place 5 Replace the economy clip If for any reason the sensor head has been completely unscrewed the original setting can be restored as follows These instructions vary slightly for the Mistral Pro head and Mistral Pro remote sensor Mistral Pro series 1 Insert the setting ring making sure that the base pin engages in the setting ring slot 2 Position the sensor head to the respective head base aligning the adjustment notch with the setting arrow Now screw the head clockwise to the stop pressing lightly 3 Unscrew the sensor head until the setting notch lines up with setting 3 marked on the head internals 4 Replace the cover aligning the numeral 3 on the scale with the setting arrow and press firmly to snap the cover into place Mistral Pro remote sensor 1 Insert the setting ring making sure to line up the limit stop of both the setting ring and base Follow instructions 2 4 as above Working pressures and temperatures Maximum Maximum Maximum g ji differential mperatur r r emperature pressure pressure Performance The Mistral Pro TRV provides the following flow characteristics under standard operating conditions Pressure drop kPa 0 003 0 005 0 01 0 02 0 05 0 1 Flow rate litres second at 2K control difference Kv Kvvalve m3 h Kvvalve m3 h Control difference K
9. cate the drain valve probe onto the valve insert and then turn anti clockwise to release the fluid held within the radiator Additional blanking caps can be used to provide extra protection from unwanted water leakage Building in dimensions for Mistral Pro lockshield bodies 15mm vertical pattern 22mm vertical pattern 15mm straight pattern 22mm straight pattern Hat lan ind alt Vertical 15mm x 1 2 36mm 58mm 107mm 36mm 22mm x 3 4 Horizontal 15mm x 1 2 Straight 15mm x 1 2 22mm x 3 4 Reversible 15mm vertical 22mm horizontal _ C Mistral Pro Mistral Pro Mi P A B C A B C A B C 58mm Working pressures and temperatures Max Max Max differential temperature Pressure pressure o o 1 2 120 C 10 bar 1 bar 3 4 120 C 10 bar 1 bar Performance Mistral Pro valves provide the following flow characteristics under standard operating conditions Mistral Pro thermostatic bodies Pressure drop kPa 0 003 0 005 0 01 0 02 0 03 0 05 0 1 0 2 Flow rate litres second at 2K control difference Kv valve m3 h Control difference K Kvs ESES CAES 1 2 0 25 0 37 0 49 0 58 0 66 1 35 3 4 0 40 0 60 0 79 0 98 1 26 2 50 Mistral Pro lockshield bodies 50 Pressure drop kPa 0 1 0 002 0 005 0 01 0 02 0 05 0 1 0 2 0 5 1 Flow rate litres second Kv valve m3 h se Rete oe
10. djust the thermostatic head to setting IIll and fit to the valve body 3 Screw down and tighten in line with instructions for standard head 4 After installation remove the clip from the anti theft ring with a screwdriver The anti theft ring now rotates freely preventing the unwanted removal of the head Mistral Pro head remote sensor remote head Mistral Pro Mistral Pro anti tamper anti theft head head Mistral Pro Pee ee ee om C f Ts C Te C C P Ts Mistral Pro anti tamper head Once the valve body has been installed adhering to the appropriate instructions the anti tamper head should be fitted as follows 1 Remove central cap covering the adjuster with a small screwdriver insert the setting tool into the opening and turn the head anti clockwise until it reaches the stop 2 Screw the thermostatic head clockwise onto the valve body until resistance is felt Continue turning until the retaining screw hole aligns with one of the two marks on the rim of the retaining nut This ensures that the hole is aligned with the tapping for the locking screw which is also aligned with the mark 3 Insert a 2mm allen key and with the key in place fully tighten the thermostatic head 4 Using the allen key turn the retaining screw into the retaining nut as far as it will go If the handwheel is now rotated it will not affect the setting 5 Using the setting key adjust valve to pre
11. ferred setting viewed through the top of the thermostatic head Finally replace central cap Size range The Mistral Automatic Bypass Valve is available in 3 4 1 and 11 4 sizes Building in dimensions 85mm 32mm 40mm 90mm 37mm 48mm 90mm 46mm 55mm Installation Select the appropriate bypass valve for the system conditions using the performance charts provided The Mistral ABV should be installed as close to the pump as is practical between the flow and return with the flow in the direction of the arrow Operation Supplied with a standard factory setting of 200mbar adjustment to suit individual systems can be achieved by first releasing the securing screw and then turning the handwheel to the desired position between 50mbar and 500mbar Working pressures and temperatures Maximum Maximum temperature pressure sil Performance The Mistral Automatic Bypass Valve provides the following flow characteristics under standard operating conditions va N Pressure drop mbar PT A AV AY A Pot yy i yt yy Py Vy Vy Ty Pressure drop mbar 0 0 2 0 4 06 0 8 1 0 1 2 1 4 1 6 1 8 2 0 2 2 Flow rate litres second INSTALLATION amp OPERATING INSTRUCTIONS INSTALLATION amp OPERATING INSTRUCTIONS INSTALLATION amp OPERATING INSTRUCTIONS Valve bodies Fitting tool General trouble
12. g Anti theft device Tamperproof temperature locking Yes 6 C Yes Tamperproof temperature ee Yes limiting Economy clip Yes Positive shut off Yes Hysteresis 0 2K Capillary length Restricting the maximum setting 1 Set the handwheel with the arrow aligned with the desired maximum setting and remove the cover from the base plate 2 Take the red stop pegs from the accessory pack and insert one with the narrow side down into the locking groove in the handwheel to the left of the detente 3 Replace the cover pressing firmly until it snaps into place Locking a desired setting 1 Set the handwheel so the arrow is aligned with the desired setting 2 Carefully prise off the sensor cover with a screwdriver inserted through the drilling in the underside 3 Take the red stop pegs from the accessory pack and insert them with the narrow side down into the locking grooves in the handwheel one to the left and one to the right of the detente Replace the cover pressing firmly until it snaps into place The desired setting in now locked in place Important Should the setting mark ever be removed from its guide it must be reinserted over the red calibration dot which is exposed on its removal Mistral Pro anti theft head Once the valve body has been installed adhering to the appropriate instructions the anti theft head should be fitted as follows 1 Unscrew the protective cap from the valve body 2 A
13. he area to be heated 2 Is the system running at the design temperature 3 Is the pipework sized correctly 4 Is the radiator poorly positioned in relation to the heat sensor i e behind a heavy curtain behind radiator panelling or in a bay window or alcove Where the thermostat will not shut off check the following 1 Has the maximum allowed differential pressure been exceeded 2 Is the valve seat clean and free of contamination 3 Is the head fully screwed on Where excessive noise can be heard in the heating system 1 Ensure that the maximum differential pressure has not been exceeded 2 Ensure that the valve is installed correctly with the flow direction as indicated 3 Install an appropriately sized Mistral automatic bypass valve Standards and approvals Where appropriate the following standards are applicable to the Mistral product range BS 2767 manually operated valves BS EN215 thermostatic radiator valves BS 7556 connections for thermostatic radiator valves EN 1254 capillary fittings part 1 and compression fittings part 2 BS 21 ISO 7 pipe threads BS EN ISO 9001 2000 quality systems UK Sales Free Phone 0800 156 0010 UK Sales Free Fax 0808 156 1011 Technical Help Free Phone 0800 156 0050 Technical Help Free Fax 0808 156 1012 Pegler Yorkshire St Catherine s Avenue Doncaster South Yorkshire DN4 8DF www pegleryorkshire co uk Aalberts Industries
14. he setting ring and press it firmly into place 6 Screw in the sensor head clockwise as far as it will go then unscrew until the calibration notch lines up with the limit stop the setting arrow and setting 2 7 Replace the cover making sure that the number Il lines up with the setting arrow 8 Press firmly on the cover to snap it into place Other settings are achieved in similar fashion Locking a predetermined setting This example illustrates how to lock the Mistral Pro TRV to position Il Carry out procedures 1 3 for restricting the maximum setting Then proceed as follows 4 Align setting ring locking slot with setting 2 marked on the head internals Carry out steps 5 8 as for restricting the maximum setting Setting Il has been locked in place Other settings are achieved in similar fashion INSTALLATION amp OPERATING INSTRUCTIONS INSTALLATION amp OPERATING INSTRUCTIONS INSTALLATION amp OPERATING INSTRUCTIONS Re setting If for any reason the original setting of the thermostatic head has been lost it can be restored as follows 1 Remove the economy clip 2 Set the head to position IIIII Insert the sensor cover removal tool into the ventilation slots and remove the cover with a sharp pull 3 Turn the exposed head clockwise to the stop then anti clockwise until the calibration notch aligns with position 3 as marked on the head internals 4 Replace the cover aligning num
15. ided ensuring that the arrow is pointing upwards 4 Measure the required length of capillary tube which may be buried in the plaster or alternatively run in a 23mm conduit Wind any surplus around the hooks on the front face of the base plate When mounting on a flat wall it is important to make sure the capillary tube is carefully lead out through one of the slots provided 5 With scale mark III to the top press the cover firmly onto the base plate until it snaps into place Never attempt to cut or shorten the capillary tube Installation of the capillary tube in the conduit 1 Carefully unscrew the retaining nut from the thermostat actuator housing and withdraw the capillary tube together with the thermostat actuator 2 Push a lead wire through the conduit and attach it to the thermostat actuator Then using the lead wire draw the actuator and the capillary tube back through the conduit 3 Re assemble the individual components 4 Unscrew the protective cap from the thermostatic valve body only when ready to fit thermostatic head 5 Set the Mistral Pro Remote head to setting IIIIl then fit the thermostat actuator housing to the valve body and tighten until secure 6 When the installation is complete and the system is running normally adjust the thermostatic head to the preferred setting Features Mistral Pro Temperature range Maximum sensor temperature Range Night time setting Frost settin
16. justable spanner Step 3 Tighten the nut a further 1 to 7 3 of a turn for normal joint making an arrowhead stamped on the face of the nut provides a reference point for tightening Some variation may be necessary when jointing stainless steel tube and Table Y copper tube If there is any slight leakage particularly if the joint has been disturbed after assembly the nut may be tightened further as necessary However over tightening the compression nut will not result in a stronger joint and may lead to problems in service Fitting Thermostatic Heads Adjust setting to position IIll and fit to the valve body screw down the locking nut and secure do not over tighten When the installation is complete and the system is running normally adjust the thermostatic heads to the preferred setting in individual rooms If installing a Mistral TRV snap on the decorative cover which is supplied loose Performance The Mistral Manual radiator valve provides the following flow characteristics under standard operating conditions 3 2 Pressure drop kPa 0 03 0 05 0 1 Flow rate litres second 097063 V2 0306 Mistral TRV Size range Mistral TRVs are available in three sizes 8mm x 12 BSP 10mm x 7 2 BSP and 15mm x 1 2 BSP Building in dimensions for Mistral TRV Fitted vertically 100mm 28mm 50mm Fitted horizontally 100mm 32mm 47mm Ins
17. on instructions Operation Using the black economy clip The thermostatic head is supplied with an economy clip which may be used to restrict the maximum temperature as follows 1 Slide the economy clip back with the thumb as far as it will go Lift the rear end of the clip and remove from the thermostatic head 2 Rotate the thermostatic head until the desired maximum setting aligns with the setting arrow 3 Next insert the economy clip in the corresponding slot and push in gently 4 The thermostatic head can now be rotated to any setting up to the set limit The economy clip can also be used as a setting marker or may be removed altogether by lifting it out of the slot if it is not required In addition to the economy clip the Mistral Pro features a locking and limiting device Limiting the maximum setting This example illustrates how to limit the Mistral Pro TRV to position Il 1 Remove the economy clip 2 Set the head to position IIIII Insert the cover removal tool into the ventilation slots of the cover Pull sharply and remove the cover to expose the headwork and setting ring in initial position 3 Rotate the exposed sensor head 180 anti clockwise and lift the setting ring 4 Align the setting ring with the setting arrow i e the right hand edge of the limit stop to the right of the locking slot immediately to the left of setting 2 marked on the head internals 5 Re insert t
18. tallation See general installation instructions Operation Limiting the maximum setting To achieve this attach the thermostatic head and set the temperature to the maximum desired position Remove the black retention pin found underneath the setting arrow and re insert into the slot directly underneath position IIH The temperature adjustment has been limited to the set point Locking a predetermined setting To lock a predetermined setting carry out the limiting maximum setting procedure as detailed above Then remove the retention pin positioned under setting IlIll and replace it two slots to the left The desired set temperature is now locked Working pressures and temperatures Performance The Mistral TRV provides the following flow characteristics under standard operating conditions Pressure drop kPa 0 5 0 3 0 2 0 1 0 003 0 005 0 01 0 02 0 05 0 1 Flow rate litres second at 2K control difference Kv valve m3 h ae ac ae 0 25 0 37 0 49 0 58 0 66 0 95 10mm 0 25 0 37 0 49 0 58 0 66 1 15 15mm 0 25 0 37 0 49 0 58 0 66 1 35 Mistral Pro TRV Size range The Mistral Pro TRV is available in 15mm x 1 2 BSP To use with 10mm or 8mm copper tube use Kuterlite 648 reducing sets Building in dimensions for Mistral Pro TRV 15mm fitted vertically 107mm 28mm 50mm 15mm fitted horizontally 107mm 32mm 47mm Installation See general installati
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