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"EVO250DC" - WHOLE HOUSE HEAT RECOVERY UNIT
INSTALLATION AND OPERATING INSTRUCTIONS
S
afety Notice
I
t is important to read this Instruction Manual carefully before installing or using the product. Following these
instructions will ensure that your ventilation system is installed, commissioned and used properly and contin-
ues to operate effectively. Vectaire will not be held responsible and will not accept liability for any damage
caused to persons or property through failure to follow the guidance provided in this manual. It should always
be available with the product for easy reference.
EVO250DC: for dwellings up to 150m
2
- maximum capacity 85ml/sec
-
General Information
The Vectaire EVO250DC heat recovery system provides whole house
mechanical ventilation to living areas, bedrooms, kitchen and bathrooms
.
It extracts stale, contaminated air from kitchens, utility rooms and bath-
rooms, and uses the heat recovered from this air to warm fresh, incom-
ing air to create a flow of fresh air throughout the dwelling. The extract
and intake air streams are separated to avoid contamination.
The system will operate continuously to create a stable, comfortable,
healthy environment avoiding the use of excessive energy and saving
heat already generated.
The heat recovery unit will generally be installed in the loft of a house or
the void above the ceiling in an apartment (but may be installed in a cup-
board) and will be connected by hidden ductwork to vents sited in the
ceilings of the rooms which require ventilation. Each unit is commis-
sioned individually allowing its performance to be tailored to suit the per-
formance required. There will be a facility to boost the extraction rate
when desired (e.g when cooking or bathing or pollutant levels rise). This
may be done automatically or manually.
The system is designed to run continuously and should NOT be switched off except for maintenance or filter
replacement. It is important to follow the advice in this user manual and correctly install and maintain the
system to ensure a healthy and comfortable indoor environment.
Features
• SAP PCDB Listed whole house heat recovery unit giving continuous ventilation in the kitchen and up to six
additional wet rooms
• low noise levels
• variable choice low (trickle) speed and boost options for optimum setting at installation
• boost speed can be triggered by a switched live connection from a variety of external devices including:
- a light switch (if more than one light switch is used, each one must be a double pole switch)
- DRH240 (dynamic remote humidistat)
- PIRFF (passive infra red)
- THM (thermostat)
- a remote switch/pull cord
or via LCD control panel
• can be mounted with left or right hand drainage and ducting.
• economical EC motor with electronic control plus:
Standard control features:
> Independent motor speed control
• Each motor can be adjusted independently
• Trickle, boost and purge speeds can be set at installation
> Adjustable over-run timer - from 0-90 Minutes, factory set to 0 minutes
> Adjustable delay-on timer - from 0-5 Minutes, factory set to 2 minutes
> Integral frost stat – proportionally reduces intake motor speed as temperature falls
> BMS connections – for remote motor shut off
• Installation MUST be carried out by suitably qualified personnel and MUST be in accordance with current IEE
regulations
IT IS IMPORTANT THESE INSTRUCTIONS ARE
READ FULLY BEFORE INSTALLATION
•
This product should not be used for any purpose
other than that for which it was designed and as
shown in this leaflet.
• All packaging should be removed and the unit
checked for damage in transit. If there is any
damage, please contact your supplier.
• The EVO250DC will generally be fitted into a loft or
ceiling void. In order to comply with Construction
(Design & Management) Regulations, sufficient
access for safe maintenance (recommended on
an annual basis), or removal following installa-
tion,
MUST be provided for this product.
We
recommend that a clearance of at least 150mm
is available on each side of the cabinet to allow
access to the motors.
See dimensions diagram.
• Fire Dampers must be fitted to duct work at appropriate locations in accordance with Building Regulations
• Flue gases from fuel-burning equipment must not be drawn into a living area. If any room from which air
is extracted contains a fuel burning appliance, such as a central heating boiler, then its flue must be of
the sealed or balanced flue type, or allowance must be made for an adequate supply of air into the room.
• The unit must NOT be installed:
- where there is excessive oil or grease
- where there are hazardous gases, liquids or vapours that are flammable or corrosive
- in ambient temperatures above 50ºC or lower than 5ºC (-28ºC using pre-heater)
- in humidity levels above 90% or in a wet environment
• Where possible the unit should NOT be installed directly above a bedroom or living room.
• The condensation drain MUST be fitted and if insulated, use the equivalent of at least 25mm of insulating
material with a thermal conductivity of
0.04 W/(mK)
• Care should be taken to ensure that ducting is free from blockages before switching on the unit as this may
invalidate your guarantee
• External grilles should be located a minimum of 600mm from any flue outlet in accordance with all
Regulations
• The unit must be connected to a 230v-240v, 50Hz single phase electrical supply.
• A triple pole isolation switch with contact separation of at least 3mm must be used to connect the appliance
to the fixed wiring when using the Switched Live.
• The product should only be connected to the mains electricity supply or electrical outlet if:
- your electrical voltage and frequency correspond to those shown on the rating label.
- the capacity of your electricity supply is sufficiently powerful to operate the product at its
maximum power.
• If one of the spigots is not connected to ducting a safety grille MUST be fitted to that spigot, so that it is
impossible for any moving part to be touched.
Installation of the appliance MUST be carried out by a qualified and suitably competent person and should be
carried out in clean, dry conditions where dust and humidity are at minimal levels. The unit is not suitable for
installation to the exterior of the dwelling.
Transportation, packaging and storage prior to installation
• Care should be taken when transporting the unit. Dropping or knocking will damage the inner workings
of the unit.
• The unit should always be stored in a clean, dry environment.
• Remove all packaging before installation.
Pre-inspection
• Inspect the unit and electrical supply cord for any damage (damage must be repaired by a suitably
qualified and competent person.)
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Duct and Duct Connections (refer to design drawing)
• 4 x 204mmx 60mm spigots are provided for the connection of ducting. These are clearly marked for cor-
rect connection of the supply and exhaust ducts.
• Where ducting is installed in an unheated space, all of the ducts should be insulated. Where ducting is in
stalled in a heated space, only the cold ducts should be insulated. i.e. the supply duct from outside and the ex-
tract duct from the unit to the outside.
• The duct layout must be designed to suit the requirements of the ventilation/recovery system and building lay-
out. If the ducting passes through a fire wall/barrier, suitable fire dampers must be installed.
• Where rigid duct is used, it should be installed using the least number of fittings to minimise air flow resist-
ance. Where possible, final connection to the grilles and unit should be made with a flexible connection.
• Where flexible ducts are used, ensure that:
- duct runs are kept as short as possible
- the duct is stretched so that it is smooth and straight
- where bends are necessary, they have large radii (ie avoid sharp bends)
- the duct is not crushed if in a restricted area
Condensation
(The unit may sometimes produce condensation which must be drained away. A 15mm dia pipe connection is
provided on this unit).
• A 15mm dia pipe must be fitted to the pipe connection. If any part of the condensate drain is in an
unheated space it MUST be insulated with the equivalent of at least 25mm of insulating material with a
thermal conductivity of 0.04 W/mK.
• The pipe must drain into the normal household drainage system.
• The drain must incorporate a wet or dry trap to prevent air penetration.
• The unit must be tilted towards the side carrying the condensation exit point. It should be installed
horizontally with a 3º tilt towards the condensation drain used (equivalent of raising the opposite end by
approximately 25mm).
• The drainage pipe must have a continuous fall from the unit to the drainage collection point.
Electrical Connection
WARNING: these appliances must be earthed and all wiring must conform to current IEE Regulations and all ap-
plicable standards and Building Regulations.
• The unit is suitable for 230V, 50Hz Single phase supply.
• The unit is supplied with:
- A mains rated 4 core flexible cord (black, brown, grey and green/yellow) and 2 core 0-10v cables for purge
switching, or an external connector box.
Cables for any other external device will be provided and labelled on request
• A triple pole isolation switch with contact separation of at least 3mm must be used to connect the appliance to the
fixed wiring when using the Switched Live.
• Boost controls must not be located within 1 metre of a cooker or where they may be affected by excessive heat or
moisture.
• Boost and other external controls should be clearly identified and conveniently located.
• The boost facility can be activated by a switched live connection (in addition to the permanent supply live). The
switched live can be operated by a variety of external devices, including:
- PIRFF (passive infra red)*
- DRH240 (dynamic remote humidistat)*
- THM (thermostat)*
- a light switch (if more than one light switch is used, each one must be a double pole switch)
- a remote switch/pull cord
or via LCD control
(*PIRFF, DRH240 and THM may have integral over-run timer which controls the length of time that the fan will
continue to operate at its boost speed after the boost has been switched off.)
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