MVHR MRXBOX95B-LP1 TECHNIC AL INFORMATION
MRXBOX95B-LP1 MECHANICAL SUPPLY & EXTRACT WITH HEAT RECOVERY VERY LOW DEPTH CEILING VOID HEAT RECOVERY UNIT SAP APPENDIX Q ELIGIBLE.
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029 2085 8200
MVHR MRXBOX95B-LP1 TECHNIC AL INFORMATION
BENEFITS MRXBOX95B-LP1 is specifically designed for apartment applications where there are ceiling void limitations. The MVHR unit provides optimised balanced (supply & 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 a facility to commission the supply & extract fans independently on both minimum and maximum speeds.
MEETS BUILDING REGULATIONS SAP Appendix Q recognised. Part F&L - England & Wales. Scottish technical handbook (BRE398 referenced). Technical booklet K1998.
PROVIDES EXTRA STORAGE/CUPBOARD SPACE Occupant acceptability.
ADDED SECURITY
OPTIONAL INTEGRAL HUMIDISTAT To automatically boost the fan when humidity levels exceeds the adjustable set point.
OPTIMUM PERFORMANCE
Windows may be kept closed.
OPTIONAL REMOTE COMMISSIONING BOX
Low Specific Fan power and high efficiency results in SAP Q.
LOW & EASY MAINTENANCE
Provides simple & easy access for commissioning of the unit.
EXTREMELY LOW NOISE LEVELS
Easy accessible filters on underneath cover via loft hatch.
Quiet running unit ensuring occupant acceptability.
INTEGRAL FROST PROTECTION
OPTIONAL LOCKABLE OUTER COMMISSIONING BOX
OVERCOMES VALUABLE CUPBOARD SPACE RESTRICTIONS
Protects the unit during extreme cold spells.
To provide a tamper proof solution for remote comissioning box.
Mounted within ceiling void.
DISCREET RUN MONITOR
5 YEAR WARRANTY
SUMMERTIME BOOST
SIMPLE FAN CONTROLS
5 year parts and 1 year labour warranty guarantee reduced life costs and peace of mind.
Boost facility to provide additional fresh air when required.
Independent controls for supply & extract for quick and easy commissioning.
IMPROVES INDOOR AIR QUALITY
NO REQUIREMENT FOR TRICKLE VENTS
High efficiency filters helps to create a healthy living environment.
Reduces noise from outside - overcomes draught issues.
INSTALLATION FEATURE
TYPICAL INSTALLATION
Air valve in ceiling.
204 x 60mm ducting in ceiling void.
Side view of unit mounted in the ceiling void.
Download specification from www.nuaire.co.uk/specifications
Access to second filter
Filter plate and filter being removed
Control module
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MVHR MRXBOX95B-LP1 TECHNIC AL INFORMATION
PERFORMANCE
Code description
MRXBOX95B-LP1
MR-XBOX95-B-LP1 | | | | |
550 ISO 5801 2007 AMCA 300
500 450 Fan Static Pressure (Pa)
1
V Type D Air Density 1.2 kg/m3
3
4
5
1. Multi-room supply and extract heat recovery 2. Product range 3. Efficiency 4. Bypass 5. Low profile
400 350 1
300
2
250 2
MRXBOX95B-LP1H
200 150
Multi-room supply and extract heat recovery model with Integral humidistat. ‘H’ = Integral humidistat
3
100
4
MRXBOX95B-LP1E
50
5
0 0
5
10.0
15
20
25
30
35
40
45
50
55
60
65
70
75
80
Air volume flow rate (l/s)
85
Multi-room supply & extract heat recovery model compatible with Ecosmart controls, sensors and remote commissioning feature. ‘E’ = Ecosmart controls, sensors and
remote commissioning feature MRXBOX95B-LP1EH Multi-room supply & extract heat recovery model with integral humidistat and compatible with Ecosmart controls, sensors and remote commissioning feature. ‘E’ = Ecosmart controls, sensors and
remote commissioning feature MRXBOX95B-LP1
‘H’ = Integral humidistat
ELECTRIC AL & SOUND
Curve 1
2
3
4
5
Maximum power consumption (Watts) 100 Open inlet Open outlet Breakout 85 Open inlet Open outlet Breakout 65 Open inlet Open outlet Breakout 45 Open inlet Open outlet Breakout 26 Open Inlet Open outlet Breakout
MRXBOX95B-LP1EP Sound Power Levels dB re 1pW 63 125 250 500 1K 50 56 55 55 46 57 67 68 69 67 64 64 63 62 52 50 52 55 51 43 56 63 65 65 63 62 62 61 57 48 45 47 48 44 35 52 57 58 58 56 57 56 54 49 41 39 42 37 34 26 46 50 49 49 46 50 49 44 39 29 36 36 26 24 17 39 43 37 38 35 42 40 33 27 14
2K 42 65 47 39 59 43 30 53 33 19 44 19 14 28 -
4K 32 56 38 27 51 32 20 42 23 12 30 14 17 -
8K 23 48 30 17 42 20 9 32 21 10 -
dBA @3m
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029 2085 8200
remote commissioning feature ‘P’ = Condensate pump
40
33
23
12
The maximum power consumption shown above (Watts) is consumed on units running continuously, not taking into account any heat recovery saving based on SAP Appendix Q testing. Please note step curves shown are for information purposes only and are not individual units. The units actual duty range is infinitely variable.
68
Multi-room supply & extract heat recovery model with condensate pump as standard and compatible with Ecosmart controls, sensors and remote commissioning feature. ‘E’ = Ecosmart controls, sensors and
MRXBOX95B-LP1EPH Multi-room supply & extract heat recovery model with integral humidistat, condensate pump as standard and compatible with Ecosmart controls, sensors and remote commissioning feature. ‘E’ = Ecosmart controls, sensors and
remote commissioning feature ‘P’ = Condensate pump ‘H’ = Integral humidistat
MVHR MRXBOX95B-LP1 TECHNIC AL INFORMATION
SAP APPENDIX Q TEST RESULTS Exhaust terminal Configuration
Fan speed setting
Specific fan power (W/l/s)
Heat exchange efficiency %
Exhaust terminal Configuration
Fan speed setting
Specific fan power (W/l/s)
Heat exchange efficiency %
Kitchen + 1 wet room
100% variable
0.54
75
Kitchen + 5 wet rooms
100% variable
0.95
78
Kitchen + 2 wet rooms
100% variable
0.60
76
Kitchen + 6 wet rooms
100% variable
1.14
79
Kitchen + 3 wet rooms
100% variable
0.69
77
Kitchen + 4 wet rooms
100% variable
0.79
78
GENERAL ARRANGEMENT MRXBOX95B-LP1
Control module
4 x Spigots for 204 x 60mm rectangular ducting
Filter and filter plate being removed
Second filter and filter plate being removed
MRXBOX95B-LP1 - DIMENSIONS (mm) View from underside with lid removed (B)
View from top with lid (A) 900
668 hole centres
371
700
885 hole centres
21.5mm condensate drain View from control side
(A)
End view
200
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153 740 (Filter access distance) 850 (B)
Download specification from www.nuaire.co.uk/specifications
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MVHR MRXBOX95B-LP1 TECHNIC AL INFORMATION
ELECTRICAL CONNECTION Please note: the electrical connection of the unit must be be carried out by a qualified electrician.
Control module
The unit is supplied with a flexible cord for connection to the mains supply. Electrical details:Voltage:
240V 1ph 50Hz
Consumption:
LP1 - 1.3 Amp
Fuse rating:
3 Amp
NOTE: This unit must be earthed. The three core cable from the mains power supply should be connected to a fixed wiring installation, via a fused isolator, in accordance with current IEE wiring regulations.
Detail of unit control on control panel. Tamper proof label following commissioning.
B R N
B R N
EXTRACTFAN FAN EXTRACT
SUPPLY FAN
B L U
SWL
EXTRACT
SUPPLY
B L U
BYPASS BLU WHI YEL RED SUPPLY
YEL WHI BLU RED FAIL
3
Note: Wiring is for reference purposes only as the connections above are factory fitted. The unit is pre-wired with a 2 metre fly lead.
2
Connection to Remote Fail Indicator Ref: MRXBOX95LH-RFI
UNIT SERVING KITCHEN AND BATHROOM Supply cord from unit
MAINS 230V N 50Hz L Fuse 2A Light switch (Double Pole)
Room light
Blue Brown Black 3 Pole isolator
Kitchen switch
UNIT SERVING KITCHEN AND TWO BATHROOMS Green/yellow Blue Brown Black
MAINS 230V N 50Hz L Fuse 2A
Room lights
Light switches (Double Pole) Kitchen switch
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029 2085 8200
3 Pole isolator
Supply cord from unit
MVHR MRXBOX95B-LP1 TECHNIC AL INFORMATION
CONSULTA NTS SPECIFIC ATION OPERATION
The unit shall be offered with a 5 year warranty.
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.
STD CONTROLS (ALL UNITS)
The combined supply and extract with heat recovery unit, shall supply 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: • 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), and boost speed, via inbuilt minimum and maximum speed adjustment. The fans shall have infinitely variable speed control.
SPECIFICATION
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. • Independent control of boost speed supply and extract flow rates. • Integral fan failure indication. • Integral S/L terminal for boost to commissioned level, from remote switch, e.g. light switch. • Additional S/L terminal for 100% boost speed, from remote switch e.g. plate switch. • Integral heat exchanger frost protection. • Discreet daily run monitor.
WITH INTEGRAL HUMIDITY SENSOR (MRXBOX95B-LP1H) The integral humidity sensor incorporated within the extract fan chamber will automatically boost both the extract and supply fan, to the commissioned boost speed, when the humidity level exceeds that set by the front panel mounted adjustment potentiometer.
OPTIONAL CONTROLS/SENSORS (MRXBOX95B-LP1) & (MRXBOX95B-LP1H)
The unit shall be manufactured from galvanised sheet steel with a white, pre-painted removable access panel. The unit shall be fully insulated providing excellent thermal and acoustic characteristics and shall be complete with a multi plate, aluminium, counter flow high efficiency heat exchanger block, with a thermal efficiency of up to 80%. The heat exchanger shall be protected by G3 grade filters on fresh air inlet and system extract. The heat exchanger and filters shall be accessible via the underside access panels, enabling quick and easy maintenance.
MRXBOX95LH-RFI 230-PIR HUMISEN 773532
The unit shall have a maximum depth of 200mm to fit within ceiling void restrictions. The unit shall have low energy, high efficiency 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. Motor assemblies shall be removable from the underside of the unit and will not require the unit to be removed from situ. The unit shall be supplied complete with a condensate drip tray and 21.5mm drain connection.
WITH INTEGRAL HUMIDISTAT (MRXBOX95B-LP1EH)
The unit shall be suitable for 204x60mm rectangular ducting. The breakout noise level and power requirements shall be as detailed by the unit manufacturer and in accordance with the ventilation equipment schedule.
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Remote fail indicator. PIR Sensor with run-on timer. 230V Humidistat. Normal/boost switch.
ADDITIONAL ECOSMART FEATURE CODES ECOSMART READY – COMPATIBLE WITH OPTIONAL CONTROLS, SENSORS AND COMMISSIONING FEATURE (MRXBOX95B-LP1E)
WITH CONDENSATE PUMP AS STANDARD (MRXBOX95B-LP1EP) WITH CONDENSATE PUMP AS STANDARD & INTEGRAL HUMIDISTAT (MRXBOX95B-LP1EPH) OPTIONAL ECOSMART SENSORS/ANCILLARIES MRXBOX95-PIR MRXBOX95-HUM MRXBOX95-RFI MRXBOX95B-LP-RCC MRXBOX95B-LP-RCB
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boost by Passive Infra Red. boost by Humidistat. Remote fail indicator. Remote commission control with 10m cable. Remote commission control with lockable box.
Units shall be MRXBOX95B-LP1 as manufactured by Nuaire. The unit shall be fitted with 100% summer bypass as standard. The bypass opens automatically when outside temperature exceeds 20 Deg.C. This shall open the damper via an actuator. Outside air supplied through the bypass shall be filtered, so the air quality is optimal, irrespective of the bypass setting (open or closed).
Download specification from www.nuaire.co.uk/specifications
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