• up to 163 litre/sec at 50Pa - max 177 litre/sec capacity
• sfp down to 0.40 W/l/s
• summer bypass which allows the airflow to bypass the heat exchanger automatically when internal and external temperatures are between adjustable setpoints.
• frost-stat - proportionally reduces intake motor speed as temperature falls - activated when the outside temperature is between +8ºC and -3ºC.
• run-time and power outage counters
• easy to install and maintain
• easy to access G3 filters
• universal handing for models without humidistat - left or right (see separate diagram for handing on humidistat models)
• for fitting vertically into lofts, or cupboards - wall fixing bracket supplied
• variable low (trickle), boost and purge options for each motor
• boost speed can be activated by a 230V switched live from:
• a light switch (if more than one light switch is used, each one must be a double pole switch)
• Remote humidistat (230V - DRH240)
• Passive infra red (230V - PIRFF)
• Thermostat (230V - THM)
• Remote switch/pull cord - 230V
• low noise levels
• low running costs
• 5 year warranty - 1 year parts and labour, 4 years parts only

CONTROL FEATURES - STANDARD

• independent variable speed adjustment for each motor for trickle, boost and purge speeds.
• adjustable boost speed over-run timer from 0 to 30 minutes.
• adjustable boost speed delay from 0 to 5 minutes
• remote purge cable connection on circuit board (for optional purge facility)
• adjustable night time boost and purge inhibitor
• integral frost-stat - proportionally reduces intake motor speed as temperature falls
• automatic summer bypass

CONTROL FEATURES - FACTORY SET

• change of ductwork handing on humidistat version (trip point can be set at manufacture)
• integral humidistat - proportionally increases motor speeds with rising humidity
• 0-10V connections can be added for:
• BMS - for remote motor shut-off
• CO2 detector
• home automation system
• relay for external pre-heater
• 3 speed selector switch
• optional remote purge cable - factory connected - adjustable over-run timer from 0 to 250 minutes, Pre-set to 15 minutes (adjustable at factory)
• holiday mode for reduced speeds when property is unoccupied (factory set option) - default setting is 50% of trickle speed
• run-time and power outage counters downloadable via QR code

Vectaire Ltd can supply all accessories for use with these units, including air filter cassettes, silencers, fire dampers, air valves, ducting, outside grilles and wall cowls. Additionally, Vectaire offers a design service to ensure that the unit installed is the best possible to provide efficient, effective, low energy and low running cost ventilation. Vectaire can also organise installation, commissioning and maintenance of these products

• casing from steel sheet - epoxy paint finish
• foam construction lining
• EPS internal components provide acoustic and thermal enhancement
• low energy EC brushless motor with single width, single inlet, direct drive, forward curved impellors
• operates in temperature up to 60ºC
• easy to access standard, disposable G3 filters
• counter flow heat exchanger

• Building Regulations for enhanced energy saving capability
• Building Regulations for reliable, efficient ventilation
• EU RoHS Directive Compliant.
• Complies with IEC60335-2-80, LVD2006/95/CE and EMC2014/30/UE (European Directive against radio interference and electro-magnetic compatibility
• manufactured in UK to ISO 9001:2015 and 14001:2015
• CE marked
• SAP PCDB Listed

• WHHR Maxi/ BY - bypass, universal
• WHHR Maxi/ BLH - bypass, left drain humidistat
• WHHR Maxi/ BRH - bypass, right drain, humidistat
• Maxi BY+LCD - bypass, universal, integral LCD
• Maxi+LHHLCD - bypass, left drain, humidistat, integral LCD
• Maxi+RHHLCD - bypass, right drain, humidistat, integral LCD

• WHHR-Maxi-F - set of filters for above models

• The unit will:
• be manufactured by Vectaire Ltd.
• be constructed from steel sheet and the case lined and insulated to ensure extremely low noise levels.
• be suitable for installation on walls, in cupboards or in lofts.
• have a condensate tray and drain connections for connection by others.
• have a high efficiency counterflow heat exchanger with a thermal efficiency of up to 92%
• have two low energy, high efficiency EC fan motor assemblies.
• have a specific fan power from 0.40 W/l/s.
• have two G3 grade filters to protect the heat exchanger
• will operate in temperature up to 60ºC
• have an automatic summer bypass
• have an integral frost-stat
• Units without humidistats shall be capable of being handed for left or right mounting without any on-site assembly.
• Access to filters shall be from the front by removing two magnetic strips.

• The unit shall incorporate the following control features:

STANDARD

• independent variable speed adjustment for each motor for trickle, boost and purge speeds.
• adjustable boost speed over-run timer from 0 to 30 minutes.
• adjustable boost speed delay from 0 to 5 minutes
• remote purge cable connection on circuit board (for optional purge facility)
• adjustable night time boost and purge inhibitor
• integral frost-stat - proportionally reduces intake motor speed as temperature falls
• summer bypass - automatic bypass of heat exchanger in hot weather

FACTORY SET adjustable over-run timer from 0 to 250 minutes. Pre-set to 15 minutes (adjustable at factory) > run-time and power outage counters downloadablevia QR code.

• change of ductwork handing on humidistat version (trip point can be set at manufacture)
• integral humidistat - proportionally increases motor speeds with rising humidity
• 0-10V connections can be added for:
• BMS - for remote motor shut-off
• CO2 detector
• home automation system
• external pre-heater
• 3 speed selector switch
• optional remote purge cable - factory connected -

• holiday mode for reduced speeds when property is unoccupied (factory set option)

• LCD touch screen (optional) informs user of:
• operating speed (user adjustable)
• internal and external temperatures
• status icons shows which functions currently controlling fan speed
• date and time (user adjustable)
• relative humidity level
• bypass status
• error and service notifications
• filter saturation level (reset after changing)
• user can also set system to holiday mode and set language
• (Loft mounted units can be provided with a remote LCD touch screen).

• A Commissioning Kit (or LCD touch screen) will allow the commissioning engineer or installer to set the following parameters:
• Time and Date
• Holiday Mode
• Trickle, boost and purge speeds for each motor
• Boost speed delay time duration
• Boost over-run time duration
• Night time boost inhibitor times
• Touch screen sensitivity calibration
• Pre-heater threshold (if fitted)
• Handed installations
• Activate CO2 detector or home automation system (if fitted)

• The unit will:
• be CE marked
• comply with:
• Building Regulations for enhanced energy saving capability
• Building Regulations for reliable, efficient ventilation
• EU RoHS Directive Compliant
• IEC60335-2-80, LVD2006/95/CE
• EMC2014/30/UE (European Directive against radio interference and electro-magnetic compatibility
• manufactured in UK to ISO 9001:2015 and 14001:2015
• be SAP PCDB Listed
• have a 5 year warranty -1 year parts and labour and 4 years parts only