Vent-Axia HR500 Montageanleitung

HR500 & HR500X

Wall Mounting

Heat Recovery Ventilation Units

Installation and Wiring Instructions

Stock Ref. N°

14101010B - HR500

(without shutter)

14101070 - HR500X

(with shutter)

PLEASE RETAIN THESE INSTRUCTIONS WITH THE PRODUCT.

Warnings & Safety Information

HR500 and HR500X Installation & Wiring Instructions 2

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.

• 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 power feed to 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. This unit 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.

INSTALLATION GUIDANCE

1. The installer is responsible for the installation and

electrical connection of the system on site. It is the

responsibility of the installer to ensure that the equipment is

safely and securely installed and left only when

mechanically and electrically safe.

2. All regulations and requirements must be strictly

followed to prevent hazards to life and property, both

during and after installation, and during any subsequent

servicing and maintenance.

Disposal

This product should not be disposed of with household

waste. Please recycle where facilities exist. Check with

your local authority for recycling advice.

Product Description

HR500 and HR500X Installation & Wiring Instructions 3

Product Description

The Vent-Axia HR500 and HR500X are heat recovery units for through the wall installation, which extract stale

air and as it does so, a heat exchanger within the unit transfers up to 70% of the heat to the freshing incoming

air.

The unit is ideal for computer rooms, classrooms, offices and the health and leisure industries, the perfect

solution for commercial areas that require a high performance balanced intake/extract ventilation scheme.

Air Direction

Product Description

HR500 and HR500X Installation & Wiring Instructions 4

Exploded View of Fan Unit and Dimensions

Installation

HR500 and HR500X Installation & Wiring Instructions 5

Overview

Installation should only be carried out by a qualified electrician and installer.

Before Installation of the Unit

Inspect the Unit

When taking delivery of the unit, check the items delivered against the enclosed delivery note. Inspect the unit

for damage in transit. If in doubt, contact Customer Services. Each box contains an HR500 unit and an

accessory pack, energy rating labels and product documentation.

Unit Installation

The HR500 and HR500X units are typically installed through the wall.

The wall should have sufficient strength to support the unit.

Take into consideration the position of the electrical services.

Ensure there is an adequate access for installation, operation and maintenance.

It is recommended that a local isolation switch is installed within 1m of the unit to facilitate future maintenance.

Installation

HR500 and HR500X Installation & Wiring Instructions 6

Installation

1. Check the components supplied against the parts list

(see Fig. 1).

2. Before deciding on the final position of the unit, check

that there are no buried cables, pipes or obstructions

on the outside wall.

3. Working from the inside, mark out the position of the

hole to be cut 615mm wide x 385mm high. Mark the

centre point by drawing diagonals (see Fig. 2).

4. Drill horizontally through the wall at the marked centre

point using a long reach drill.

5. Estimate the wall thickness and mark the position of

the hole to be cut in the outer wall using the centre

hole as a guide. Hole size 615mm wide x 385mm high.

Note: Outer hole should be marked 12mm to 32mm

(225mm wall to 600mm wall) lower than inner hole

so as to produce a 3 degree slope toward the

outside (see Fig. 3).

6. Carefully cut the holes in the inner and outer leaves to

form a suitable aperture to receive the unit.

Note: Bricks will cut more easily and accurately if a

series of holes are drilled close together along the

marked lines.

7. Remove the inner and outer grilles. While the inner

grille is released by depressing the buttons projecting

through its side walls, the outer grille is released by

removing the screw and washer assemblies passing

through the side walls.

8. After turning the heat exchanger retaining knobs to

the unlocked position, withdraw the heat exchanger

(see Fig.6).

Note: The heat exchanger should be handled by the

grey top and bottom plates and frame only. Care

should be taken so as not to damage the element.

9. Try the casing assembly in the wall and ensure that

the shoulder on the inner case can be set flush with

the internal wall surface (see Fig.4).

10.Choose the site for controller or switch box and run a

suitable length of 5-core 0.75mm2 cable and it must

be round with a diameter of between 7 and 10 mm to

suit the supply cable gland (i.e. the largest gland) in

the terminal box.

Installation

HR500 and HR500X Installation & Wiring Instructions 7

11. Position the unit in the wall aperture with the galvanised lintel placed on top of the ribs on the case to provide support for

the outer wall. Thread the cable from the controller between the inner and outer cases and through the hole located on the

left side of the top face of the inner case.

12. Position the shoulder of the inner case flush with the interior wall surface (see Fig. 4). This will automatically result in the

designed 3 degree slope to outside. If necessary, extend the telescopic outer case so that the lower shoulder of the outer

case is flush with or proud of the outer wall surface (see Fig. 7).

13. Make good around the inner and outer cases. If firmer fixings are required, secure the inner and outer cases in place by

plugging and screwing into the wall leaves.

CAUTION – Care should be taken not to distort either inner or outer cases when fixing and making good.

14. Working from outside, position the divider board in the channel between the fan housings by folding the edges down. Cut

the board such that it extends beyond the end of the outer case by 55mm for the HR500 type and falls short of the end of

the outer case by 13mm for the HR500X type (see Fig.5). Replace the outer grille and retain it with the screw and washer

assemblies previously removed. Before replacing and fixing the outer shuttered grille on the HR500X type pass the cable

from the grille through the hole with a grommet in the right hand end face of the inner case.

Installation

HR500 and HR500X Installation & Wiring Instructions 8

15. Internal wiring connections.

WARNINGS

1. MAINS SUPPLY VOLTAGES (220-240 V AC) ARE PRESENT IN THIS EQUIPMENT, WHICH MAY CAUSE

DEATH OR SERIOUS INJURY BY ELECTRIC SHOCK. ONLY A QUALIFIED ELECTRICIAN OR INSTALLER

SHOULD CONNECT THE POWER SUPPLY TO THIS UNIT. MAINS SUPPLY MUST BE ISOLATED BEFORE

MAKING CONNECTION.

2. THIS UNIT MUST BE CORRECTLY EARTHED.

Pass the supply cable through the largest cable

gland in the side of the terminal box. For the

HR500X the cable from the shuttered grille passes

through the remaining free cable gland. Cut the

cables to the minimum length required and make the

internal wiring connections within the terminal box

(see Fig.6). Connect the supply cable from Vent-

Axia Controller to the appropriate terminals of the

terminal block within the terminal box as shown in

Fig. 9. If a Vent-Axia Controller is not used, connect

the supply cable as shown in Fig. 10. Ensure all

cable glands are tightened sufficiently to seal onto

the cables.

16. Fit the heat exchanger into the casing of the unit.

Pressing lightly on alternative side legs, ‘’walk’’ the

heat exchanger firmly into place (see Fig. 8).

17. Fix the inner grille to the casing by depressing the

button on each side and sliding the grille over them

so that they locate in the corresponding holes in the

grille sides. Ensure that the buttons are positioned on

their fixing screws so that the seal on the inner edge

of the grille is pressed against the mating face on the

inner case to give an airtight seal.

18. Connect to the mains and turn the power on.

19. Switch on at the controller and select the speed and

function required – see operating instructions

supplied with the controller.

Installation

HR500 and HR500X Installation & Wiring Instructions 9

Maintenance

HR500 and HR500X Installation & Wiring Instructions 10

WARNING

THE FAN AND ANCILLARY CONTROL EQUIPMENT MUST BE ISOLATED FROM THE POWER SUPPLY

DURING MAINTENANCE.

Maintenance

Heat recovery units require regular maintenance. The HR500 and HR500X has been designed to facilitate access to enable

maintenance to be carried out easily. The actions below should be carried out at least every 6-months as conditions dictate.

Item Action

Unit & Heat Exchanger

Cell

Inspect and clean the unit

1. Isolate the mains power supply.

2. Remove front cover from the unit.

3. Slide out the heat exchanger.

4. Wash the outer cover and heat exchanger in warm water using a mild detergent (such as

Milton Fluid) and dry thoroughly.

NOTE: Keep water away from all electrical components and wiring within the unit.

Motors Inspect the motors for build-up of dust and dirt on the impeller blades, which could cause

imbalance and increased noise levels. Vacuum or clean if necessary.

Fastenings Check that all unit and wall-mount fastenings are sufficiently tight and have not become

loose. Re-tighten if necessary.

The unit is supplied with four, 6-month Timestrip indicators. A Timestrip is a single use self-adhesive label that once activated will turn

red over 6 months. It should be used to keep track of when the filter and cell need cleaning/replacement. Using the self-adhesive

backing the strip can stuck near the units controls, or in a easily visible place.

A normal cleaning schedule for a unit would be as follows:

After installation Activate the 1st Timestrip

After 6 months Clean cell, clean filter, activate 2nd Timestrip

After 12 months Clean cell, clean filter, activate 3rd Timestrip

After 18 months Clean cell, clean filter, activate 4th Timestrip

After 24 months Clean cell, replace filters, the new filters will be supplied with 4 additional Timestrip indicators

Note: The above is the minimum requirement; more frequent cleaning intervals may be needed depending on the environment the unit

is installed in.

Activating the Timestrip.

1. Activation: Fully squeeze the activation button between thumb and finger. A red line will appear within 1-2 minutes to show that the

Timestrip has been activated.

2. Peel off the backing liner and stick the Timestrip to the Unit or near the controls of the unit. The location should make it obvious to the

person responsible for maintenance that the unit needs attention.

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