Vectaire WHHR125DC Assembly instructions

FEATURES
• Highly efficient, low energy
solution to condensation
and pollutant control
• Continuous ventilation in
kitchen plus up to
5 additional wet rooms
• Over 90% heat exchange
efficiency
• Low noise levels
• Building Regulations Part L
and Part F compliant
LOFT OR WALL INSTALLATION
WHHR125DC
SAP Q Eligible
WHOLE HOUSE HEAT RECOVERY UNIT
GENERAL
•SAP Q eligible whole house heat
recovery unit for homes
•continuous ventilation in kitchen and up
to 5 additional wet rooms - optimum
use in kitchen plus 2 wetrooms
•maximum airflow 165m3/hr
•suitable for areas up to 115m2
•up to 91% of heat is recovered from
air extracted from warm, moist rooms
to create a stable, comfortable,
healthy environment
•easy to install with quick fix mounting
bracket
•for fitting into lofts, false ceilings
or cupboards
•multiple choice low (trickle) speed and
boost options
•boost speed obtainable by user via
remote switch/pull cord (ie a volt free
contact switch - not supplied) or by a
humidistat, thermostat, or PIR sensor
using an intermediate, external relay
(available separately)
•has integral over-run timer for boost
speed
•frost protection
•low noise levels
•low running costs
•gives extra security by removing
need to open windows
•guaranteed for 3 years
•Vectaire Ltd can supply all accessories
for use with these units, including duct-
ing and metal filters, outside grilles and
wall cowls
SPECIFICATION
• very compact, low profile unit
•housing from Zintec sheet steel pow-
der coated white
•expanded polypropylene (EPP) heat
exchanger
•closed cell foamed Nitrile rubber insula-
tion - class "O" fire rating
•grade G3 synthetic filters, flame resist
ant to BS5588
•can be used with 100mm or 125mm
dia ducting without needing adaptors
•operates in temperature up to 40ºC
•weight - 16kg
COMPLIES WITH
•Part L of Building Regulations for
enhanced energy saving capability
•Part F of Building Regulations for
reliable, efficient ventilation
•EU RoHS Directive Compliant.
•Conforms to requirements of EC
Council directives relating to
Electromagnetic Compatibility and
Electrical Safety: 2006/95/EC (LVD),
2004/108/EC (EMC)EN 60335-
1:2002/A2:2006, EN 60335-2-
80:2003/A1:2004.
•CE marked
•SAP Q eligible
• EST Best Practice Compliant
Incoming fresh air
Warmed fresh air
Extracted warm, moist, stale air
Cooled outgoing stale air
WHHR125DC
GENERAL COMPLIES WITHSPECIFICATION

Vectaire Ltd
Lincoln Road
Cressex Business Park
High Wycombe
Buckinghamshire
HP12 3RH
Tel: [phone]
Fax: [phone]
Email: [email protected]
Web: www.vectaire.co.uk
Vectaire Ltd reserves the right to alter specifications as part of its policy of continuous development Apr 2011/WHHR125DC© E & O.E
WHHR125DC - TECHNICAL INFORMATION
300
250
200
150
100
50
0
Static Pressure Pa
Speed & Watts
Max
Speed 78
759
635
527
421
316
213
18
DIMENSIONS - mm
ENERGY LEVEL PERFORMANCE - using rigid ducting
Exhaust Terminal
Configuration Fan Speed Setting Specific Fan Power (W/l/s)
Heat Exchange
Efficiency (%)
Energy Saving Trust
Best Practice
Performance Compliant
Kitchen + 1additional wet
room 100% variable 0.70 91 yes
Kitchen + 2additional wet
rooms 100% variable 0.70 89 yes
Kitchen + 3additional wet
rooms 100% variable 0.72 89 yes
Kitchen + 4additional wet
rooms 100% variable 0.90 88 yes
Kitchen + 5additional wet
rooms 100% variable 0.99 87 yes
Figures from BRE test results
0 10203040506070l/s
20 40 60 80 100 120 140 160 180 200 220 240 m3/hr
PERFORMANCE

It 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 continues to operate effectively
"WHHR125DC"
Whole House
Heat Recovery Unit
with Low Energy DC Motor
Installation, Operating and Maintenance
Instructions - domestic and commercial use

Page 2
Contents
Section Page Number
Introduction 3
How the system works - Features 4
Installation
- Safety & Guidance 5
- Dimensions 5
- Pre-installation inspection 6
- Mounting 6, 7
- Drain assembly 8
- Ducting 9
- Electrical connections 10
- Wiring diagram 10
Commissioning
- Quick commissioning mode 11
- Full commissioning mode for optimum efficiency 12
- Boost speed setting 13
- Resetting the controller 13
Service and Maintenance 14
- Cleaning 15
- Filter replacement 15
Service record 16

Interior comfort, air quality and energy efficiency are vitally important considerations in buildings today.
Controlled ventilation is even more vital in virtually airtight modern homes.
The Vectaire WHHR125DC has been developed to meet these demands by providing clean fresh air
whilst extracting stale polluted air from the building using state of the art technology to maximise
energy efficiency.
For the home owner or occupant, this Instruction Manual explains:
• How your Vectaire WHHR125DC system works.
• How to operate and maintain your Vectaire WHHR125DC.
For the professional installer, this Instruction Manual explains:
• How to install the Vectaire WHHR125DC.
• How to commission the unit.
• How to maintain the unit.
Safety Notice
It 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 with the correct maintenance procedures continues 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 avail-
able with the product for easy reference.
This unit SHOULD NOT be switched off. It is designed to run continuously. If it is switched off indoor
pollutant and moisture levels may increase.
Page 3
Introduction

The Vectaire WHHR125DC works by extracting stale polluted air from rooms where most moisture is
generated and providing fresh pre-warmed air taken from outside the house and delivering it to other
rooms, creating a flow of fresh, clean air throughout the house.
Most of the heat reclaimed from the extracted air is used to pre-heat incoming fresh air by means of a
“heat exchanger” built into the unit. The ventilation system operates continuously so the air remains free
from harmful pollutants and excessive moisture, but without wasting heat or energy unnecessarily.
The unit is usually installed in a roof space or cupboard and the air travels from terminals built into the
ceiling which are connected by hidden ducts to the unit. These ceiling terminals should not be disturbed
or adjusted - they have been set at installation to give the correct amount of ventilation to the property.
Each unit is commissioned individually so the amount of air moved is set to suit the specific size and style
of the house. Most systems will also have a facility to boost the extraction rate at times when more
moisture is being generated, such as when bathing or cooking.
During cold weather the frost protection programme will automatically vary the ventilation to ensure
there is no build up of ice in the unit. There is an optional summer mode over ride switch which enables
the unit to operate on extract only mode (ie there is no incoming air). If the unit is operating this way
and the building is occupied, it is advisable to open either windows or trickle ventilators to ensure a prop-
er balance of air. (Windows and ventilators should NOT be open when operating as a heat recovery unit).
There may be small changes in airflow or noise levels. This is quite normal - the unit is designed to oper-
ate in this way. The system will have been pre-set to run continuously to providenormal ventilation. If a
boost switch has been installed, it can be used to increase the extract ventilation rate at times when
moisture or pollutant levels are considered excessive. You may have electronic sensors which detect
high levels of moisture and pollutants which boost the system automatically.
All whole house ventilation units require periodic maintenance and this must only be carried out
by a suitably qualified and competent person. See the servicing and maintenance section for
further details.
Features of the Vectaire WHHR125DC
• Easy installation mounting bracket.
• Standard 15mm fitting for condensate drain connection.
• The duct ports accept 100 and 125mm diameter ducting.
• Quick commissioning with step-less fan speeds
• 3 speed options - Continuous, Boost and Setback
• Advanced frost protection control.
• The boost speed can be triggered by:
- a remote switch/pull cord (a volt free contact switch)
(not supplied)
OR by any of the following when used with an intermediate,
external relay (available separately - please contact Vectaire
Technical Dept for further information on the use of this):
- 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)
• Accurate system balancing through the indepenent adjust
ment of the supply and exract fans.
• Manual Summer Mode enables extract only mode thus reducing
the supply of warmer outside air to the dwelling to maintain a
cooler internal temperature.
Page 4
How the system works
System Layout 1
System Layout 2

IMPORTANT: READ THESE INSTRUCTIONS FULLY
BEFORE INSTALLING THIS
APPLIANCE!
The Vectaire WHHR125DC is designed to be fitted into the
roof space or a cupboard. These diagrams show the dimen-
sions of the unit and the additional space required around the
unit to allow for future servicing and maintenance.
The unit must NOT be installed in an area which does not
have sufficient access for future maintenance.
The appliance must NOT be installed in an environment which
contains:
• Excessive oil or a grease laden environment.
• Hazardous gases, liquids or vapours that are
flammable or corrosive.
• Ambient temperatures above 40°C or below -5°C.
• Humidity levels above 90% or a wet environment.
Safety and guidance
• The electrical installation of the appliance MUST be car-
ried out by a suitably qualified, competent person and all
wiring must be in accordance with current I.E.E.
Regulations and all appropriate standards and applicable
regulatory guidance.
• The appliance must be connected to a local isolation
switch with a contact separation of at least 3mm.
• The appliance is suitable for 230V ~ 50/60Hz single
phase with a fuse rating of 3A.
• The condensation drain MUST be fitted and insulated with
the equivalent of at least 25mm of insulating material
with a thermal conductivity of 0.04 W/(mK).
• Ensure that external grills are located away from any flue outlet, in accordance with all relevant
Building Regulations.
• Always ensure ducting is free from blockages before switching the unit on as this may invalidate your
guarantee.
• Precautions must be taken to avoid the back-flow of gases into the room from an open gas flue
or other fuel-burning appliances.
• We recommend a minimum distance of 2m between the external air supply inlet and the extract
air outlet to prevent cross contamination and a minimum distance of 200mm between the appliance
and any sharp bends in duct work.
• The appliance is not suitable for installation to the exterior of the dwelling.
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. It should
only be installed after other building works have been completed and the building in which it is installed cleaned.
Failure to comply with any of the above points will have an impact on the validity of the guarantee.
Page 5
Installation
Dimensions

Transportation, packaging and storage prior to installation
• Great care should be taken when transporting the appliance, DO NOT drop as damage may
occur within the appliance.
• The unit must always be stored in a clean, dry environment.
• Remove all packaging before installation.
Pre-inspection
• Inspect the appliance and electrical supply cord for any damage.
• Check all accessories have been supplied.
• Inspect the appliance and supply cord for any damage. Any damage must be repaired by a
suitably qualified and competent person.
Parts list
Installation - mounting
Do not remove the transport bungs until connecting ductng.
Transport bungs are fitted to prevent debris falling into the
unit and causing blockages and damage.
The Unit Must be mounted Plumb/Level Front to Back
and Side to Side.
1. Mark a horizontal line on the wall using a spirit level. This
line will be approximately 95mm below the location of the
top face of the unit when fitted (excluding duct ports).
2. Use one of the mounting brackets as a template to mark
the three fixing hole centres.
3. Drill holes for fixings, always use a fixing suited to the wall
type.
4. Mount one fixing bracket to the wall ensuring the inter-
locking side is at the top, as shown
Page 6
Installation
1 x Vectaire WHHR125DC unit.
2 x Wall mounting brackets.
1 x Safety bracket.
1 x 15mm Drain connector.
4 x M6x10mm pan head screws.
4 x M6 washers.
Any parts shortages or faults must be reported
to the supplier immediately.

5. Fix the remaining bracket to the unit using the M6
screws and washers provided, ensuring the interlock
side is at the bottom. Do not overtighten.
6. Mount the unit by locating the two mounting brackets
together. Ensure a positive location is made between the
two mounting brackets.
7. Fix the lower safety bracket as shown using the remain-
ing M6 screw, washer and suitable wall fixing.
Hook onto wall bracket.
This bracket MUST be fitted to secure the unit.
Packing to be used as required behind the Safety
Bracket to ensure Unit is level.
Page 7
Installation

A drain must be connected to allow condensation to be
removed from the unit.
The drain connection is made via the 15mm connection on
the base of the unit.
The drain must discharge into the household drainage
system via a U-bend, which must act as an air lock.
1. Attach a 15mm condensate pipe using a
compression fitting (drain pipe shown uninsulated
for clarity).
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).
IMPORTANT NOTE: The drain must incorporate a U-bend
to prevent air penetration.
Page 8
Installation - Drain Assembly