HP HEAT PUMP RANGE AIR CURTAINS - Mitsubishitech.co.uk
ErPcompliantHP HEAT PUMP RANGE AIR CURTAINSINSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONSFor use with Mr Slim Outdoor UnitsPLEASE READ THESE INSTRUCTIONS CAREFULLY BEFORE ATTEMPTING INSTALLATIONThermoscreens LtdSt. Mary’s Road NuneatonWarwickshire EnglandCV11 5AUEmail: sales@thermoscreens.comTel: 44 (0) 24 7638 4646Fax: 44 (0) 24 7638 8578www.thermoscreens.comT9901085-1-3 UKEnglishPage 1 of 38
Thermoscreens / Mitsubishi ElectricMr Slim HP Heat Pump Air Curtain SystemCONTENTSPageAir Curtain System SchematicsDesign InformationUnpacking the Air Curtain358INSTALLATIONInstallation of the Air CurtainFigure 2 – Dimensions of HP Air CurtainMitsubishi Electric Outdoor UnitRefrigerant PipeworkTo gain access inside the Air CurtainElectrical Supply and Wiring to the Air CurtainWiring Diagram 1 (Defrost Cycle Auxiliary Heater disabled - as supplied)Wiring Diagram 2 (Defrost Cycle Auxiliary Heater enabled on site)Wiring of Air Curtain Fan SpeedCondensate Disposal System10111212131416171818COMMISSIONINGAir Curtain ChecksDip Switch Settings and Air Temperature Sensor PositionSelecting the Fan Speeds of the Air CurtainStarting the Heat Pump SystemWeather Compensation Control or Discharge Air Temperature ControlInlet Air Temperature Control or Room Air Temperature ControlFilter Dirty IndicatorHand-over to End-User2021222424272830USER INSTRUCTIONSWeather Compensation Control or Discharge Air Temperature ControlInlet Air Temperature Control or Room Air Temperature Control3132SERVICINGFortnightly CleaningSix Monthly ServicingFault FindingT9901085-1-3 UK333336Page 2 of 38
Thermoscreens / Mitsubishi ElectricMr Slim HP Heat Pump Air Curtain Systemwith Weather Compensation Controlor Discharge Air Temperature Control)Air Curtain is supplied set-up to operate on either of these control modesPermanent electrical supply(from local switched spur)S2, S3 communicationlink with outdoor unitPermanent electrical supply (from local switched spur)1-phase for air curtain as supplied,3-phase only if defrost cycle auxiliary heater is needed(site change then required to air curtain)(S1 is not used)Heat PumpAir CurtainOptionalBMS ControlInterface BoardMitsubishi ElectricMr Slim Outdoor UnitBMSControlOn/OffMode changeWeather compensationcontrol or Discharge airtemp. controlMitsubishi errorMitsubishi ElectricPAR-W21 MAARemote ControllerRemote3-Speed FanSwitch(if end userrequires this)Door Switch to change fan speeds,Door open - High; Door shut - Low(industry standard fan speed control)Refrigeration pipeworkElectrical cablesControl cablesBMS ControlThe Mr Slim HP Heat Pump Air Curtain System consists of : a Thermoscreens 'HP Air Curtain' fitted with a Mitsubishi Electric PAC-IF010B-EInterface PCB, with dip switches set to be a PAC-IF020B-E * a Mitsubishi Electric 'Mr Slim Outdoor Unit' a Mitsubishi Electric 'PAR-W21 MAA Remote Controller' for manual control by theoccupant of weather compensation control or discharge air temperature control a door switch to change fan speeds; higher speed when the door is open, lower speedwhen the door is shut a Thermoscreens ‘Remote 3-Speed Fan Switch’ (if end user requires this) ** - supplied by Thermoscreens Ltd. - Mitsubishi Electric items supplied by the installer - supplied by the installerT9901085-1-3 UKPage 3 of 38
Thermoscreens / Mitsubishi ElectricMr Slim HP Heat Pump Air Curtain Systemwith Inlet Air Temperature Controlor Room Air Temperature ControlAir Curtain is modified during commissioning to operate on these control modesPermanent electrical supply(from local switched spur)S2, S3 communicationlink with outdoor unitPermanent electrical supply (from local switched spur)1-phase for air curtain as supplied,3-phase only if defrost cycle auxiliary heater is needed(site change then required to air curtain)(S1 is not used)Heat PumpAir CurtainOptionalBMS ControlInterface BoardMitsubishi ElectricMr Slim Outdoor UnitBMSControlOn/OffMode changeCapacity controlTemperature monitoringMitsubishi errorMitsubishi ElectricPAR-30MAARemote ControllerRemote3-Speed FanSwitch(if end userrequires this)Door Switch to change fan speeds,Door open - High; Door shut - Low(industry standard fan speed control)Refrigeration pipeworkElectrical cablesControl cablesBMS ControlThe Mr Slim HP Heat Pump Air Curtain System consists of : a Thermoscreens 'HP Air Curtain' fitted with a Mitsubishi Electric PAC-IF010B-EInterface PCB * a Mitsubishi Electric 'Mr Slim Outdoor Unit' a Mitsubishi Electric 'PAR-30MAA Remote Controller' for manual control by theoccupant of inlet air temperature control or room air temperature control a door switch to change fan speeds; higher speed when the door is open, lower speedwhen the door is shut a Thermoscreens ‘Remote 3-Speed Fan Switch’ (if end user requires this) ** - supplied by Thermoscreens Ltd. - Mitsubishi Electric items supplied by the installer - supplied by the installerT9901085-1-3 UKPage 4 of 38
DESIGN INFORMATIONAS SUPPLIED the air curtain operates on a 1 phase electrical supply (1L N E) from a localswitched spur which provides power for fans and controls. There is an integral defrostcycle auxiliary heater located inside the air curtain but this is ‘disabled’ as supplied. If thedefrost cycle auxiliary heater is required the air curtain will then need a 3 phase electricalsupply (3L N E) from a local switched spur, instead of the 1 phase electrical supply, toprovide power for the heater as well which will need to be ‘enabled’ on site duringcommissioning, see also notes on Page 6 and Section 'Installation - Electrical Supply andWiring to the Air Curtain', Page 14. There is also a communications link with the Mr Slimoutdoor unit via connections S2 and S3 (S1 is not used).AS SUPPLIED the air curtain is set up for energy saving Weather Compensation Controlor Discharge Air Temperature Control and is used with a Mitsubishi Electric PAR-W21MAA Remote Controller. The following functions are available: On/Off control of the Mitsubishi Electric heat pump system Mode change between Heating mode and Fan only mode (Cooling mode notavailable) Energy saving weather compensation control or discharge air temperature control viaa set target temperature. Signal for when the outdoor unit is in defrost mode so the defrost cycle auxiliary heater(if enabled) can provide partial heat back-up during the few minutes of defrost. Error signal for if the Mitsubishi Electric heat pump system has a problemWeather Compensation Control (HEATING ECO): This looks at the outside airtemperature using an air sensor on the Mitsubishi Electric outdoor unit and automaticallyadjusts the temperature of the air curtain discharge air in accordance with a heating curve.It will select a warmer discharge air stream if it is cold outside and a cooler discharge airstream if it is not so cold outside, as the discharge air does not need to be as warm. Thisachieves significant energy and carbon savings because the heat pump compressor onlyworks at the capacity it needs to. Figure 1 shows a typical heating curve set up for weathercompensation control, temperature points 1, 2, 3 and 4 are selected duringcommissioning.40Heated Air Curtain2Figure 1Weather Compensation ControlTypical heating curveAir CurtainDischarge Air 30Temperature ( C)20Ambient Air Curtain41-5035101520Outdoor Air Temperature ( C)Discharge Air Temperature Control (HEATING): The end user sets a target temperatureof, say 35 C, the air curtain then controls the temperature of the discharge air so it will stayat 35 C even if the inlet air temperature changes.T9901085-1-3 UKPage 5 of 38
The air curtain can also be set up on site during commissioning to operate under Inlet AirTemperature Control or Room Air Temperature Control and is then used with aMitsubishi Electric PAR-30 MAA Remote Controller. The following functions are available: On/Off control of the Mitsubishi Electric heat pump system Mode change between Heating mode and Fan only mode, with Cooling mode alsoavailable if enabled during commissioning and with a condensate disposal system Capacity control of the Mitsubishi Electric heat pump system Temperature monitoring of the inlet air entering the heat pump air curtain, or the roomair temperature at the remote controller Signal for when the outdoor unit is in defrost mode so the defrost cycle auxiliary heater(if enabled) can provide partial heat back-up during the few minutes of defrost. Error signal for if the Mitsubishi Electric heat pump system has a problemRefer to a Mitsubishi Electric agent if the air curtain is to be controlled via a BuildingManagement System (BMS) or Centralised Controller.It should be noted that during heating mode, if the outdoor unit goes into its defrost cycleduring cold weather, the air curtain fans will continue to operate to maintain the allimportant air stream across the doorway. It is this air stream, particularly towards the top ofthe doorway, which is so effective at stopping buoyant warm air from inside the buildingescaping to outside and wasting energy and also in reducing airborne contamination.The temperature of the discharge air can be low during the 6 to 7 minute defrost cycleperiod that may occur every few hours under particular outdoor weather conditions but thishas rarely become an issue with the end user and is really only a perceived problem.There is a defrost cycle auxiliary heater fitted in the air curtain which is disabled when theair curtain is delivered. If there are concerns for a particular installation this defrost cycleauxiliary heater can be enabled during site commissioning and this will maintain thedischarge air at a higher temperature during the defrost cycle. A 3-phase electrical supplyis then required to power the air curtain.Point of Information: If used, an auxiliary defrost heater may seem counter-productive fora heat pump system. When put into context, however, the auxiliary heater fitted is of lowoutput for the size of the air curtain, it will just temper the discharge air and is only used fora few minutes a day during a small period of the year. Tests at the Building ResearchEstablishment (BRE) test house on the heat pump air curtain system showed that evenwith the auxiliary heater cutting in during defrost, as it has to during their EN14511performance test, the annual seasonal COP was hardly affected.Cooling is possible if the air curtain is modified during commissioning to operate underInlet Air Temperature Control or Room Air Temperature Control. It will not operate incooling if set-up to operate under Weather Compensation Control or Discharge AirTemperature Control, which is how the air curtain is supplied.The air curtain is supplied with its cooling mode disabled, although an integral condensatedrain tray is fitted inside the air curtain so it could be used in cooling mode during warmweather, if so desired. This should be decided at the design stage as a condensate drainsystem will need to be installed if cooling is required and extended to a suitable drain bythe installer. The condensate can be drained by gravity by connecting suitable condensatehose onto the 15mm drain pipe on the condensate drain tray inside the air curtain. If agravity condensate drain is not visually suitable it will be necessary to remove condensateusing a condensate pump, supplied and fitted by the installer. The condensate pump canT9901085-1-3 UKPage 6 of 38
be located inside the right hand end of the air curtain or in a remote location outside of theunit if required. It must be of sufficient capacity, see Page 19, self priming and capable ofproviding the appropriate suction head so the pump will lift condensate out of the aircurtain, particularly if it is in a remote location. There are two hole penetrations at the righthand end of the air curtain for condensate pipework to pass through, see Figure 2, Page11. Suitable condensate pumps are Peristaltic or Rotary Diaphragm type. We recommendthe Blue Diamond rotary diaphragm type with cooling signal sensor (drainStik)manufactured by Charles Austen Pumps Ltd. (www.miniblue.co.uk).If using a condensate pump it is recommended that it has the facility so it only operateswhen the air curtain is in cooling mode by detection of water in the drain tray or bydetecting a cooling differential in the airflow. It should also have a pump overrun feature toempty the drain tray as much as possible when the air curtain is switched off. It shouldhave an alarm system with appropriate sensor fitted in the drain tray that will give a voltfree signal (closed circuit alarm) and stop the air curtain cooling if the condensate draintray is in danger of flooding (air curtain fans will continue to operate). There is a fixingbracket with 8mm diameter hole attached to the drain tray inside the air curtain so acondensate sensor can be fixed in the tray by the installer. The hole can be enlarged, ifnecessary, to suit the type of sensor used so it is located in the tray at the appropriateposition, see the manufacturer’s instructions that come with the condensate pump forfurther information. A 230V AC, single phase electrical supply is provided inside the aircurtain to power a condensate pump and a condensate alarm connection is provided forthe condensate pump alarm circuit.Warning: The air curtain condensate collection system is designed to remove condensatewith the air curtain operating in cooling mode during normal summer weather conditions incountries with a temperate climate. In case of extreme weather conditions, drain trayblockage or condensate pump failure, which can occur, it is vital that the design of the floorbeneath the air curtain and its surface is such that it will not become slippery or damaged ifit became wet. This is similar to the conditions that might be experienced with heavyrainfall in at an open doorway or wet pedestrian foot traffic, so careful consideration mustbe paid to the design of the floor and its surface finish.If it is intended that the air curtain should not operate in cooling mode (which is how the aircurtain is supplied) and a condensate drain system is not fitted, it is still recommended thatthe floor design and surface be as described above, in case cooling mode is used in thefuture and also to cope with heavy rainfall or wet pedestrian foot traffic.The air curtain is designed only for use with a Mitsubishi Electric Mr Slim Outdoor Unit foruse on R410A. The complete Thermoscreens air curtain / Mitsubishi Electric heat pumpsystem, including refrigerant pipework, wiring, controls, etc. must be installed only by anapproved Mitsubishi Electric refrigeration contractor.Persons using the air curtain must be given adequate instruction and supervisionconcerning the use of the appliance by a person responsible for their safety. The aircurtain is not intended for use by persons (including children) with reduced physical,sensory or mental capabilities.These instructions must be read in conjunction with the separate Mitsubishi Electricinstructions that come with the Mr Slim Outdoor Unit. All instructions should be kept by thebuilding facilities manager for future reference.T9901085-1-3 UKPage 7 of 38
UNPACKING THE AIR CURTAINThe following items are supplied and packaged within the air curtain box :HP Heat Pump Air CurtainWall Brackets and Fixing BoltsPlease note, plastic end caps are suppliedloose to be fitted during installationfor if air curtain is to be wall mountedRemote 3-Speed Fan SwitchIf remote fan speed control is required by the end userNB Industry standard is to have High/Low fan speed controlvia a door switch or single speed set at commissioningIf anything is missing or damaged please contact your place of purchase immediately.There will also be a 'Mr Slim Outdoor Unit' and ‘Remote Controller’ (if required) supplied byMitsubishi Electric.The Installer will also need to supply and install the following:PAR-30 MAA Remote ControllerPAR-W21 MAA Remote ControllerorIf Air Curtain is to be manually controlled forweather compensation control or discharge airtemp. control, also needed for commissioningT9901085-1-3 UKIf Air Curtain is to be manually controlled forinlet air or room air temperature control,also needed for commissioningPage 8 of 38
The installer may also need to supply and install the following optional items:Door Switch – for energy efficient,noise friendly, fan speed control,Door open – Higher fan speedDoor shut – Lower fan speedCondensate Pump – self priming withcooling mode detection, alarmsystem and pump overrunExample Switch onlyGives industry standard fan speed control – seewiring diagrams on Pages 16 & 17 and text onPages 18 & 22 for more informationIf Air Curtain is to be operated in COOL modeand gravity drain cannot be used – see texton Page 6 & 7 for more informationThe complete Thermoscreens air curtain / Mitsubishi Electric heat pump system, to provide aheat pump air curtain over a doorway, including wiring, fridge pipework, etc. is to be installedonly by an approved Mitsubishi Electric refrigeration contractor.IMPORTANTThis Heat Pump Air Curtain is intended only for use with a Mitsubishi Electric Mr SlimOutdoor Unit, for use on R410A.These instructions must be read in conjunction with the Mitsubishi Electric Mr SlimOutdoor Unit instructions.(All documentation supplied with each unit should be stored and kept for future reference.)For your records:Date of Purchase .Place of Purchase .Serial Number For warranty purposes proof of purchase is necessary so please keep a copy of your invoice.T9901085-1-3 UKPage 9 of 38
INSTALLATION OF THE AIR CURTAINThe air curtain is designed to be surface mounted inside a building and locatedhorizontally over a doorway. It must not be installed on the outside of the building,or built into a cabinet or recessed in anyway.LocationThe air curtain must be mounted so the discharge grille islocated up to 3.2m maximum above floor level and asclose to the doorway as possible. It must be installed levelor condensate may leak out if used for cooling. It isrecommended to leave a gap of 250mm minimum abovethe air curtain to allow for pipework brazing operations.Beware of doorway top edges, structural beams, dooropening/closure devices, etc. which may interfere with theair stream and affect the location of the unit.Recommended250mm min.for pipeworkWall FixingBolt all of the wall brackets supplied to the rear face of theunit as shown in the adjacent picture using the M10 boltssupplied. Suitable wall fixing bolts (not supplied) need tobe used to fix the brackets to the wall, taking into accountthe type of wall and the weight of the unit*, see table:Air CurtainWeight (kg)HP1000 DXE46HP1500 DXE67HP2000 DXE84Step 1. Refer to Figure 2, Page 11 for mounting detailsand drill the fixing points in the wall.Step 2. Screw in the top wall bolts leaving a small gap between the head and the wall.Lower the unit onto the bolts via the key-hole slots in the top of the wall brackets and thenscrew in the bottom wall bolts.Step 3. Ensure all fixing bolts are tightened and the air curtain is safely secured to thewall.Ceiling SuspensionM10 threaded inserts are provided in the top face of theunit (see Figure 2, Page 11 for positions) so it can besuspended on M10 threaded hanging rods (not provided).All suspension points must be used. Ensure each of thehanging rods is secured onto a suitable structure that cansupport the weight of the unit (see table above)*. Screwthe hanging rods into the inserts by a minimum or 20mmand fit locking nuts (not provided) to prevent the rodrotating and coming away from the casing. Do not screwthe hanging rod too far in or it could interfere with internalcomponents.* It is the sole responsibility of the installer to ensure that the building fixing locations and suspension systemused are suitable for the air curtain being installed.T9901085-1-3 UKPage 10 of 38
T9901085-1-3 UK20mm hole on top for pumpedcondensate disposal (if cooling)
of, say 35 C, the air curtain then controls the temperature of the discharge air so it will stay at 35 C even if the inlet air temperature changes. -5 20 0 5 15 Outdoor Air Temperature ( C) 40 20 30 Air Curtain Discharge Air Temperature ( C) 2 3 Figure 1 Weather Compensation Control Typical heating curve 1 10 4 Heated Air Curtain
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