Vent-axia Hr100rs User guide

Please leave these instructions with the user

HR100RS

Mini Air Handling Unit –

for Ducted Ventilation with Heat Recovery

Installation and

ServicingInstructions

IMPORTANT SAFETY INFORMATION

PLEASE READ THESE INSTRUCTIONS CAREFULLY BEFORE

COMMENCING INSTALLATION.

1. Do not install this product in areas where the following may be present or occur:

• Excessive oil or a grease laden atmosphere.

• Corrosive or flammable gases, liquids or vapours.

• Subject to direct water spray from hoses.

• Ambient temperatures higher than 40°C and lower than -20°C.

• Possible obstructions that may hinder access to or removal of the unit.

2. All wiring must be in accordance with the current IEE wiring regulations BS7671, or

appropriate standards of your country. Installation should be inspected and tested by a

suitably qualified person after completion.

3. Ensure the mains supply (voltage, frequency and phase) complies with the rating

label.

4. The unit should be provided with a local double pole fused spur fitted with a 3A fuse

having a contact separation of at least 3mm.

5. These units must be earthed.

6. Precautions must be taken to avoid the back-flow of gases into the building from the

open flue of gas or other fuel-burning appliances.

7. This appliance is not intended for use by persons (including children) with reduced

physical, sensory or mental capabilities, or lack of experience and knowledge, unless

they have been given supervision or instruction concerning use of the appliance by a

person responsible for their safety.

8. Young children should be supervised to ensure that they do not play with the

appliance.

Disposal

This product should not be disposed of with household waste.

Please recycle where facilities exist. Check with your local authority for recycling advice.

Contents

Section Page

1.0 Introduction 3

2.0 Site requirements 4

3.0 Installation 5

4.0 Electrical 8

5.0 Commissioning 9

6.0 Maintenance 10

1.0 Introduction

1.1 Description

The Vent-Axia HR 100RS is a remotely

mounted unit that will provide balanced

ventilation with up to 70% heat recovery

in applications where there is no

immediate access to an external wall. The

HR 100RS is ideal for installations

involving internal bathrooms and meets

building regulation requirements for this

application.

A two speed motor provides for constant

low rate ventilation with a boost speed

option. Fresh pre-warmed air from the

outside is continually provided to the room

with simultaneous extraction of stale air

and smells. Heat is transferred from

outgoing air to the fresh air supply with

zero cross contamination, maintaining

internal temperatures and providing a

fresh environment.

2.0 Site requirements

2.1 Information

1. The unit must be sited and connected

by a suitably qualified person and be in

accordance with current UK Building

Regulations and IEE Wiring Regulations

(BS 7671)

2. The unit is intended for permanent

connection to the mains electrical supply.

3. The HR100RS is intended for fixed

wiring installation.

4. Ensure that the mains electrical supply

is compatible with the rating label on the

product.

5. The unit must be sited away from direct

sources of heat in excess of 40 deg C.

6. Do not site the ceiling diffusers in the

vicinity of excessive levels of airborne oil

or grease.

7. If the ceiling diffusers are installed in a

room containing a fuel burning appliance,

the installer must ensure that air

replacement is adequate for both

appliances.

8. The external grilles must be sited a

minimum of 500mm away from the flue of

gas or open fire appliances. This to avoid

back flow of gases entering the room.

9. All safety regulations and requirements

must be strictly followed to prevent

hazards to life and property both during

and after installation and during

subsequent maintenance or servicing.

10. Ensure the mains electrical supply is

isolated before commencing installation or

maintenance.

HR 100 RS unit Ceiling slab

Condensate trap

(HepvO Waste valve)

Suspended

ceiling

Minimum maintenance

access requirement

3.0 Installation

3.1 Installing the unit

1. Check that all the components have

been delivered, as identified in the

delivery note. Notify the supplier of any

errors or omissions immediately.

2. Check the diagrammatic ducting layout

drawing to ensure that the proposed duct

routes, fan unit and air terminal locations

can be accommodated. If in doubt, refer

to the Technical Support Department.

3. The unit is designed to be mounted

horizontally. After noting the positions of

the electrical connector, duct spigots and

suitable installation site for the unit. The

drainage connection for the unit, choose a

most desirable location for the unit is

normally within the ceiling void.

4. Never locate the unit above a sleeping

area. The most suitable position is

normally above the landing or bathroom.

The selected site must allow adequate

space around the unit for the removal of

the cover and heat exchanger for

maintenance and servicing purposes.

5. The unit is attached to the ceiling slab

with suitable fixings at four positions.

Drainage slope is provided by the set of

the fixing brackets

6. The unit must be positioned so that the

condensate outlet will accommodate a

trap (Hep vO waste valve) and the

condensate conveyed properly with a

continuous gradient to a suitable

positioned down pipe.

7. Connect the drainage system as

appropriate using PVC pipe work, joined

using PVC cement to ensure waterproof

joints. Fit a flexible tube adjacent to the

unit to allow the cover to be moved clear

during maintenance.

Also note that a blocked condensate

outlet pipe due to insufficient pipe

gradient will quickly lead to water damage

3.0 Installation

3.1 Installing the unit

8. A shell bit is recommended for drilling

holes in the ceiling to accommodate the

housings for supply and extract air

terminals (SV100 and EV100) Make sure

that the drilled area is clear of structural

members, water and gas pipes or

electrical cables and that there is enough

clearance behind the ceiling board for

duct access and securing ring. Ceiling

terminals should preferably be fitted

equidistant from adjacent walls, be

mindful that coving may be subsequently

fitted.

9. Place the terminal housing into the

ceiling hole and secure to the back ring

with the four screws provided.

10. The external grilles for intake and

exhaust air should be positioned so that

the exhaust air is not drawn in again.

11. If the grilles are fitted adjacent to each

other in the same gable and at the same

height then a minimum of 1000mm

between grilles is recommended.

12. If the grilles are positioned above one

another the distance apart should at least

be 1000mm with the exhaust grille at the

top.

13. Roof ventilators placed on the same

roof surface should be positioned at the

same distances as the grilles.

14. Always ensure that all exhaust

grilles/roof ventilators are placed higher

than the top edge of the highest window

and at a distance of at least 1000mm from

the nearest window.

15. External grilles placed in the soffit

should be positioned at the same

distances as indicated for gable

application.

3.0 Installation

3.1 Installing the unit

16. Assemble the duct and fittings,

following as closely as possible the

diagrammatic ducting layout. Ensure that

the duct is raised above the ceiling

surface to allow for thermal insulation of

the ducting.

17. If the ducting runs through unheated

areas it will need to be thermally insulated

to preclude condensation occurring and to

minimise heat loss. This requirement

must be observed in the planning and

routing of the duct system.

18. The use of flexible ducting should be

limited to an absolute minimum. If used it

should be fully stretched in order to

minimise pressure loss.

19. Attach the unit to the ceiling slab

ensuring that the airflow direction arrows

on the cover are in the correct orientation

for the internal and external vents.

20. Mate up the ducting as appropriate

ensuring that the airflow is in line with the

directional indicators.

21. Determine the best siting position for

the appropriate control. Normally this

would either be a manual control switch

(NBSW), pull-cord switch (PCSW)

humidity switch (HS6) or speed control

switch (VCON100)

22. Determine the appropriate wiring

connections as outlined within section 4

and wire in accordance with current IEE

Wiring regulations ensuring that the mains

feed is isolated before making any

connections.

Continuous Normal Speed

HR100RS Terminals 3 amp fused supply

Continuous Boost Speed

HR100RS Terminals 9 amp fused supply

VCON100 : Manual Normal to Boost Speed

Switching and ON/OFF Control

HR100RS Terminals 3 amp fused supply

Live

Neutral

Earth

NBSW and PCSW: Manual Normal to Boost

Speed Control

HR100RS Terminals 3 amp fused supply

Live

Neutral

Earth

HS6: Automatic Normal to Boost Speed Control

HR100RS Terminals 3 amp fused supply

4.0 Electrical

4.1 Electrical Connections

230V 50Hz 12W (normal) 31W (boost)

NOTE: Wiring must be via a 3A fused

switched spur with a 3mm contact

separation in each pole. The wiring

should be suitably (BASEC or HAR)

approved cable of appropriate current

carrying capacity.

For units switching to boost on operation

of a light switch, an in-line timer (order

code TIM2) should be wired into the

circuit as shown below.

HR100RS

Automatic control

The HR100RS unit operates on

continuous trickle ventilation. Operation of

switch turns unit to boost ventilation.

When switch is turned off units continue

to operate on boost for a preset period –

adjustable 2-30 minutes

The HR100RS MUST NOT be wired in

conjunction with a light switch, units will

fail.

5.0 Commissioning

5.1 Commissioning the System

Before starting to commission the system

check the following:-

a) All ducting is in place and secured

b) The wiring is secure and correctly

connected.

c) The trap valve is in a position to enable

efficient removal of condensate.

d) The unit is mounted appropriately in a

position not susceptible to movement or

damage.

The scope of the commissioning

procedure comprises:-

1) Balancing the two airflows to achieve

maximum heat exchanger efficiency.

2) Adjusting the two airflows to obtain the

overall airflow rates and the individual

terminal air flow rates as specified on the

air change schedule.

3) An airflow meter must be used to set

the correct airflows.

NOTE:- The supply air terminal device

is directional and incorporates a

deflector plate. Ensure that the

deflector is correctly positioned so

that the active part of the terminal

device is discharging to the room.

4) Set the control switch (NBSW or

PCSW) to normal speed or set the

humidistat (HS6) at maximum and check

that air is flowing in the correct direction at

each terminal point.

5) Standard ceiling terminals type EV100

and SV100 are adjusted by turning the

central screw they are locked in the ‘set’

position by the locknut.

6.0 Maintenance

6.1 Cleaning the Unit

In addition to removing odours, providing

fresh air and removing heat, this unit

extracts airborne impurities such as dust,

dirt and grease. These gradually build up

and detract from the efficiency and

appearance of the unit.

To ensure optimum performance, the unit

should be cleaned at least every six

months or at periods determined by the

level contamination experienced, and in

accordance with the following procedure.

1) Isolate the mains power supply.

2) Remove the four cover securing thumb screws then remove the centre safety screw.

3). Remove the cover and move clear to the side.

4) Remove the two strap securing screws.

5) Remove the strap holding the heat exchanger.

6) Remove the heat exchanger from the unit.

7) Wash the heat exchanger in warm water using a mild detergent and dry thoroughly. Keep water

away from all electrical components and wiring within the unit. If the filter cannot be cleaned,

replacement is recommended.

8) Reassemble in reverse order. The heat exchanger should be repositioned with ‘TOP’ label visible

Heat exchanger

retaining strap

Cover securing

screw (safety)

Clamp strap screws

Cover securing

screws

Cover

PRODUCT FICHE

For Residential Ventilation Units (Complying Commission Delegated Regulation (EU)

No 1254/2014)

Name: Vent‐Axia Vent‐Axia

ModelID(StockRef.):HR100RS–435004LDCHR100RS–435004CDC

SECClassBB

SECValue('Average')‐31.99‐26.15

SECValue('Warm')‐9.00‐4.20

SECValue('Cold')‐72.91‐65.24

LabelRequired?(Yes/No=Outofscope)YesYes

Declaredas:RVUorNRVU/UVUorBVURVU/BVURVU/BVU

SpeedDrive2‐Speed2‐Speed

TypeHRS(Recuperative,Regenerative,None)Recuperative Recuperative

ThermalEff:[(%),NA(ifnone)]7070

Max.FlowRate(m3/h)49.049.0

Max.PowerInput(W):(@Max.FlowRate)2323

LWA:SoundPowerLevel(dB)45.5345.53

Ref.FlowRate(m3/s)0.0100.010

Ref.PressureDiff.(Pa)5050

SPI[W/(m3/h)]0.550.55

ControlFactor&ControlTypology:(CTRL/Typology)

ControlFactor;CTRL0.650.85

ControlTypologyLocalDemandControlCentralDemandControl

Declared:‐MaxInternal&ExternalLeakageRates(%)forBVUsorcarry

over(forregenerativeheatexchangersonly),

‐&Ext.LeakageRates(%)forDuctedUVUs;

<5%Internal,<5%

External

<5%Internal,<5%

External

MixingRateofNon‐DuctedBVUsnotintendedtobeequippedwith

oneductconnectiononeithersupplyorextractairside;N/AN/A

PositionanddescriptionofvisualfilterwarningforRVUsintendedfor

usewithfilters,includingtextpointingouttheimportanceofregular

filterchangesforperformanceandenergyefficiencyoftheunit

N/AN/A

ForUVUs(InstructionsInstallRegulatedSupply/ExtractGrillesFaçade)N/AN/A

InternetAddress(forDisassemblyInstructions)www.vent‐axia.comwww.vent‐axia.com

Sensitivityp.Variation@+20/‐20Pa:(forNon‐DuctedVUs)N./AN./A

AirTightness‐ID/OD‐(m3/h)(forNon‐DuctedVUs)N./AN./A

AnnualElectricityConsumption:AEC(kWh/a)4.596.16

AnnualHeatingSaved:AHS(kWh/a)

AHS:Average42.7940.88

AHS:Warm19.3518.49

AHS:Cold83.7179.98

The Vent-Axia Guarantee

Applicable only to products installed and used in the United Kingdom. For details of the Guarantee outside of the United Kingdom contact your local

supplier.

Vent-Axia guarantees this product for two years from the date of purchase against faulty material or workmanship. In the event of any part being found to

be defective, the product will be repaired, or at the Company’s discretion the product will be replaced without charge, provided that the product:

1). Has been installed and used in accordance with the instruction given with each unit.

2). The electricity supply complies with the rating label.

3). Has not been misused, neglected or damaged.

4). Has not been modified or repaired by any person not authorized to do so by Vent-Axia.

If claiming under terms of guarantee

Please return the complete product, carriage paid to your original supplier or nearest Vent-Axia centre, by post or personal visit. Please ensure that it is