MRXBOX95-LH2
Contents
1. ELECTRICAL amp SOUND Maximum power consumption Sound Power Levels dB re 1pW dBA Curve Watts 63 125 250 500 1K 2K 4K 8K 3m 1 16 Open inlet 36 53 34 24 22 19 20 23 13 Open outlet 40 38 BS 38 32 30 29 30 22 Breakout 40 38 36 30 21 21 20 18 14 2 30 Open inlet 40 39 41 30 28 24 21 24 18 Open outlet 41 49 49 49 42 41 30 33 32 Breakout 41 49 46 41 31 32 21 20 24 3 62 Open inlet 43 42 54 38 37 31 30 33 29 Open outlet 50 53 59 60 52 52 42 34 42 Breakout 50 52 56 52 41 43 55 30 34 4 106 Open inlet 44 46 57 43 42 37 30 33 33 Open outlet 50 58 65 63 58 59 50 40 47 Breakout 50 57 62 55 47 50 41 36 40 5 170 Open inlet 46 48 58 52 48 42 30 33 36 Open outlet 51 61 70 74 64 64 56 48 55 Breakout 51 60 67 66 53 55 47 44 47 6 277 Open inlet 50 54 62 62 55 47 39 38 43 Open outlet 56 65 72 77 69 69 61 54 58 Breakout 56 64 69 69 60 60 52 50 51 Hemisphical Free field dBA The maximum power consumption shown above Watts is consumed on units running continuously not taking into account any heat recovery saving and based on SAP Appendix Q testing Download specification from www nuaire co uk specifications nuaire co uk MVHR MRXBOX95 LH2 TECHNICAL INFORMATION CONSULTANTS SPECIFICATION OPERATION The supply and extract ventilation unit shall be positioned as indicated on the drawings and shall be in accordance with the particular fan schedule in the specification The combined supply and extract with heat recovery unit shall supp2. Filters PCB and Heat Exchanger Access G4 removable filter Heat exchanger 4 x 125mm dia spigots Panel not removable Illustration purposes only DIMENSIONS MM 4 optional 150mm dia knockout spigot locations on rear of unit If required for use cut through the acoustic foam round the circumference of the knockout see figure above G4 removable filter Adjustment potentiometers and indication lights Motor access Weight 21 Kg View from front 4 X 125mm spigots Side view controls HA gt 4 alternative 150mm dia o knockout spigots on back of unit L 21 5mm dia condensate drain alternative position View from top Side view non controls LL m 21 5mm dia condensate drain alternative position 54 029 2085 8200 MVHR ER nuaire TECHNICAL INFORMATION ELECTRICAL CONNECTION Please note the electrical connection of the unit must be be carried out ai sts For commissioning by a qualified electrician Ventilation controls refer to user manual A i l s Continuous Electrical details Boost background l4 gt Voltage 240V 1ph 50Hz z5 S TTT S 0000 a Extract Supply Fan Fuse rating 3 Amp Fan Fan Failure NOTE This unit must be earthed Detail of unit control on side panel The three core cable from the mains power supply should be connected to a fixed wiring installation via a fused isolator in accordance with curr
3. EC fan motor assemblies with sealed for life bearings the impellers shall be backward curved centrifugal type The motors shall be suitable of an ambient temperature of 40 C The unit shall be supplied complete with an insulated condensate drip tray and 21 5mm drain connection The unit shall be suitable for 150mm or 125mm circular ducting Anti vibration mounts are supplied with each unit to prevent vibration being transmitted to the ceiling timbers The breakout noise level and power requirements shall be as detailed by the unit manufacturer and in accordance with the ventilation equipment schedule 58 029 2085 8200 OPTIONAL SUMMER BYPASS MRXBOX95B LH2 The bypass damper opens when a 230V signal is applied to the unit via a manual switch supplied This opens the damper via an actuator When the switch signal is de activated the unit returns to its original state air through the heat exchanger Outside air supplied through the bypass is still filtered so the air quality is optimal irrespective of the bypass setting Open or closed MRXBOX95 LH2 CONTROL OPTIONS All versions shall have the following functions integrally mounted within the fan unit on a purpose made PCB all such components pre wired and factory fitted by the manufacturer Independent control of background supply and extract flow rates Single control of boost ventilation rates Run time monitor included Integral Fan failure indication I
4. MVHR MRXBOX95 LH2 TECHNICAL INFORMATION MRXBOX95 LH2 MECHANICAL SUPPLY amp EXTRACT WITH HEAT RECOVERY UP TO 95 EFFICIENT SAP APPENDIX Q RECOGNISED LOFT MOUNTING DESIGN FOR LARGER HOUSES 029 2085 8200 MVHR MRXBOX95 LH2 TECHNICAL INFORMATION BENEFITS MRXBOX95 LH2 is designed to provide optimised balanced supply and extract mechanical ventilation with heat recovery Tempered air is delivered into living areas whilst extracting moisture laden air from wet areas creating comfortable well ventilated homes The unit has the facility to commission the supply and extract fans independently on minimum speed continuous background ventilation boost control will control both fans to the same volume The heat exchanger block can recover up to 95 of the normally wasted heat MEETS BUILDING REGULATIONS SAP Appendix Q recognised Part F amp L England 8 Wales Scottish technical handbook BRE398 referenced Technical booklet K1998 VERY HIGH EFFICIENCY To meet customer requirements on SAP scores ensuring the reduction in emissions needed for code level 3 and above 25 reduction LOW MAINTENANCE High quality components such as filters and EC motors ensure lowest possible maintenance and long life motors Filter replacement typically every 5 years LOW POWER CONSUMPTION Reducing operating and the life cycle costs COMPACT Dedicated design ensured the most compact size for duty on the market The
5. ent IEE wiring regulations TU L O U AlddNS ZNV4 AlddNS L NVJ Fan 2 Connections x a O Z X ez 2 cor omo UN LA oo0o0o0 10000 1419 L NV4 de comp Note Wiring is for reference purposes only as the connections above are factory fitted The unit is pre wired with a Speed Control Fan Failure 2 metre fly lead Pots Indicator Connection to Remote Fail Indicator UNIT SERVING KITCHEN AND BATHROOM Supply cord MAINS Green yellow from unit 230V N 50Hz L Fuse 2A Light 3 Pole switch isolator Summer Double bypass Pole Kitchen switch switch Grey only used on bypass unit UNIT SERVING KITCHEN AND TWO BATHROOMS Supply cord Green yellow from unit MAINS 230V N 50Hz L Fuse 2A Light switches Double Pole Summer bypass switch Grey only used on bypass unit Kitchen switch Download specification from www nuaire co uk specifications nuaire co uk MVHR MRXBOX95 LH2 TECHNICAL INFORMATION GENERAL ARRANGEMENT OPTIONAL SUMMER BYPASS MRXBOX95B LH2 Filters PCB and Heat Exchanger Access G4 removable filter Heat exchanger Three optional 150mm dia knockout spigot locations on rear of unit and one on the side non controls If required for use cut through the acoustic foam round the circumference of the knockout see figure above 4 G4 removable filter Adjustment potentiometers and indica
6. loft versions are specifically designed to go through the smallest loft hatches FLEXIBLE LOFT MOUNTING OPTIONS Option 1 Mounted on roof joists using four L shape metal brackets Metal bracket attached to unit Washer Woodscrew 77 Side view example of an L shaped fixing bracket and AV and AV mounts on long sides of unit mount attached to ceiling joist LIGHTWEIGHT A one man lift for ease of install EXTREMELY LOW NOISE LEVELS Quiet running unit ensuring occupant acceptability CREATES A HEALTHIER ENVIRONMENT High efficiency filters removes up to 95 of dust particles PREVENTS CONDENSATION FROM LOFT EASY TO USE Well located controls for simple installation commissioning and use OPTIONAL SUMMER BYPASS AVAILABLE Provides cooling during warmer months MRXBOX95B LH2 5 YEAR WARRANTY 5 year parts and 1 year labour warranty guarantee reduced life costs and peace of mind L A V mount Ceiling joist Option 2 Mounted on roof joists using four L shape metal brackets and AV mounts on short sides of unit Download specification from www nuaire co uk specifications nuaire OPTIONAL REMOTE FAIL INDICATOR MRXBOX95LH RFI is connected to the fan unit via low voltage wiring DISCREET RUN MONITOR Records units operational time REMOVABLE G4 FILTERS ill Ile nuaire co uk MVHR MRXBOX95B LH2 TECHNICAL INFORMATION UNIT COMPONENTS
7. ly filtered fresh air to each of the habitable rooms and vitiated air shall be extracted from the wet areas e g bathroom en suite w c kitchen utility rooms etc The supply air shall be pre heated by the warm extract air via the integrated counter flow heat exchanger element The extracted air shall also be filtered before it reaches the heat exchanger block The ventilation unit shall vary its speed and therefore the ventilation rate as it receives signals from one of the following e Switched live signal from light remote switches When signals are received the fan shall alter its speed to adjustable normal and boost rates The unit shall have the facility to commission the supply and extract fans independently on minimum speed continuous background ventilation boost control will control both fans to the same volume via inbuilt minimum and maximum speed adjustment The fans shall have infinitely variable speed control MRXBOX95 LH2 UNIT SPECIFICATION The unit shall be fully insulated providing excellent thermal and acoustic characteristics and shall be complete with a multi plate counter flow high efficiency heat exchanger block with a thermal efficiency of up to 95 The heat exchanger shall be protected by G4 grade filters on fresh air inlet and system extract The heat exchanger and filters shall be accessible via the top access panel enabling quick and easy maintenance The unit shall have low energy high efficiency
8. ntegral S L terminal for boost from remote switch e g light switch OPTIONAL CONTROL MRXBOX95LH RFI Remote fail indicator Units shall be the MRXBOX95 LH2 as manufactured by Nuaire
9. tion lights Motor access 4 x 125mm dia spigots Panel not removable Illustration purposes only DIMENSIONS MM Weight 21 Kg View from front 3 X 125mm spigots Side view controls 3 alternative 150mm dia knockout spigots on back of unit 430 N Drain 21 5mm dia J condensate 840 450 drain alternative position View from top Side view non controls Alternative 150mm dia knockout spigot 125mm dia spigot 21 5mm dia condensate drain alternative position 56 029 2085 8200 MVHR MRXBOX9S LH2 00 nuaire TECHNICAL INFORMATION PERFORMANCE MRXBOX95 LH2 MRXBOX95 LH2 700 ISO 5801 2007 ey AMCA 300 O 600 CV g Type D 550 Air Density 1 2 kg m 500 450 400 Code descriptions MR XBOX95 LH2 350 300 250 Fan Static Pressure Pa 200 150 1 2 345 100 l 1 Multi room supply and extract heat 50 recovery 0 2 Product range 140 3 Efficiency Air volume flow rate l s 4 Loft application 5 H2 High 2 Model SAP APPENDIX O TEST RESULTS Specific fan Heat exchange Energy Saving Trust Best Application power W l s efficiency Practice Performance Compliant Kitchen Plus 1 wet room 0 81 91 Yes Kitchen Plus 2 wet rooms 0 77 91 Yes Kitchen Plus 3 wet rooms 0 78 91 Yes Kitchen Plus 4 wet room 0 86 91 Yes Kitchen Plus 5 wet rooms 0 96 91 Yes Kitchen Plus 6 wet rooms 1 09 90 No MRXBOX95 LH2
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