Vent-Axia HR300RW6 User guide

HR300RW6

Semi-Remote Wall Mounted

Heat Recovery Ventilator

Installation and

Servicing Instructions

Please leave these instructions with the user

1.0Introduction 4

2.0Site Requirements 5

3.0Installation 6

4.0Electrical 8

5.0Maintenance 9

Section Page

Contents

1.0 Introduction

1.1 Description (Figs. 1 & 2)

1. The HR300RW6 unit is a semi-remote wall

mounted heat recovery ventilator which is ideal

for light commercial applications including

function rooms, swimming pools, offices,

classrooms etc.

2. The HR300RW6 comes complete with two

internal rotor motors and two mixed flow fans.

3. The maximum power consumption for the unit

is 100w.

4. The mixed flow fans and heat exchanger

arrangement simultaneously supplies and

extracts air while transferring heat from the stale

exhaust airflow to the fresh intake airflow. This

provides up to 70% heat recovery from the stale

extracted air.

1.2 Ancillary Equipment

1. The HR300RW6 unit can be used in conjunction

with a range of ancillary equipment.

Controller: A range of controllers - see section

3.1 Controllers.

PFD150: PVC flexible ducting - 6 metre length.

AFD150: Aluminium flexible ducting - 10 metre

length.

IFD150: Insulated flexible ducting - 6 metre

length.

AV150: Circular adjustable air valve with spigot

assembly. Suitable for extraction and supply.

ESG150: Square louvre grille with removable

core and washable filter. Suitable for extraction

and supply.

Stale Air from

Wet Rooms

Fresh Warmed Air

to Dry Rooms

Fresh Air

from Outside

Stale Air

Exhaust

Fig. 1

Fig. 2

Panel Flange

Bezel

HR300RW6

2.0 Site Requirement

2.1 Information

1. The unit is designed for installation in external

walls with a thickness of between 150mm to

315mm.

2. The unit must be sited and connected by a

suitably qualified person and be in accordance

with current UK Building Regulations and I.E.E.

Wiring Regulations (BS 7671).

3. The unit is intended for permanent connection

to the mains electrical supply.

4. The unit is intended for fixed wiring installation.

5. Wiring to the unit in the UK must be via a

switched fused spur. The switched fused spur

must have a 3mm minimum contact gap in all

poles.

6. Ensure that the mains electrical supply is

compatible with the rating label attached to the

product.

7. The unit must be sited such that the ambient

temperature will not exceed 40° C.

8. Do not site the appliance in the vicinity of

excessive levels of airborne oil or grease.

9. If the unit is installed in a room containing a

fuel burning appliance, the installer must ensure

that air replacement is adequate for both

appliances.

10. The unit must not be installed at a level below

500mm from the floor.

11. The internal grille surround must be sited at

least 125mm away from any wall or projecting

surface (Fig. 3).

12. The external grille of the unit must be sited at

least 600mm away from any flue of gas or solid

fuel appliances. This is to avoid back flow of

gases entering the room.

13. 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.

14. Ensure the mains electrical supply is switched

off before commencing installation or

maintenance.

Fig. 3

125mm

Min

125mm

Min

500mm Min Above

Floor Level

3.0 Installation

3.1 Controllers

1. The HR300RW6 unit can be installed in

conjunction with a number of controllers.

VCON6: The VCON6 controller can be used to

provide Off/Low/Normal/Boost/Sensor control.

(The HS6 humidistat or TIM2 over-run timer can

be used in conjunction with the VCON6 controller

to provide automatic control.

VCON5: The VCON5 controller can be used to

provide variable speed control.

HS6: The HS6 is a humidity sensor for switching

between HIGH and LOW speeds during the

daytime according to relative humidity levels.

TIM2: The TIM2 is an overrun timer which can

also be used to control the HR100 unit via a light

switch or remote sensor e.g. PIR detector.

3.2 Initial Preparation

1. Select an approved electrical control

arrangement for the HR300RW6 unit (above).

2. After considering the site requirements

(Section 2.0), select a suitable site for the unit

and controllers and work out the cable runs.

WARNING: Before deciding on the final position

for the unit, check there are no buried cables,

pipes or obstructions on the outside wall.

Cable requirements: Suitably (Basec or Har)

approved three core cable of appropriate current

carrying capacity.

3. Install the cable runs and appropriate

controllers in conjunction with a fused connection

unit. Contact gap must not be less than 3mm.

4. Choose suitable locations and install internal

louvre grilles into desired locations.

5. Connect ducting to louvre grilles and run to the

desired location of unit.

4. Working from the inside, mark out the

position of the mounting hole - 280mm wide x

380mm high (see Fixing Template).

5. Carefully cut the holes in the inner and outer

brick courses to form a suitable aperture to

receive the unit. Ensure that this is level.

NOTE: Bricks will cut more easily and

accurately if a series of holes are drilled close

together along the marked lines.

6. Remove the connection spigot plate, heat

exchanger, from the unit (Fig. 4).

Heat Exchanger

Fig. 4

Connection Spigot Plate

3.0 Installation

3.3 Installing the Appliance

From Inside

1. Slide the unit into the mounting hole and

ensure that the minimum overhang requirements

are achieved inside and out (Fig. 5).

2. The HR300RW6 requires an overhang internal

and external (Fig. 6):

Internal 50mm

External 55mm

3. Pierce the blind grommet on the left hand side

on the top of the unit and feed the supply cable

through the grommet (Fig. 5)

4. Ensure that the unit is square and true with the

outside wall face. If firmer fixings are required,

secure the unit in place with the two fixing screws

provided.

NOTE: Ensure the fixings DO NOT inhibit

removal or replacement of the heat exchanger.

5. Make good around the case.

6. Fit the bezel on the inside to cover the making

good by pressing the bezel over the case (Fig. 7).

CAUTION: Ensure the case does not distort

during fixing and making good.

From Outside

1. Slide the panel flange (flange first) on to the

unit and press the flange firm against the outer

wall (Fig. 7).

2. Secure the panel flange to the wall using the

fixing screws provided. If necessary the panel

flange can be secured to the case by self tapping

screw 25mm long maximum.

280mm

380mm

Fig. 5

50mm

55mm

Fig. 6

Blind Grommet

Fig. 7

Panel Flange

Bezel

Internal External

3°Min

For Drainage

4.0 Electrical

4.1 Electrical Connections

230V 50Hz 100W max

1. 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.

2. Ensure that the mains power supply is

isolated prior to installation.

3. Remove the plug from the socket and connect

incoming wires to the appropriate terminals

(Figs. 7 & 8).

4. Replace plug into socket.

5. Slide the heat exchanger into the unit (Fig. 9).

6. Locate the connection spigot plate on to the

front of the unit and secure with the four screws

provided (Fig. 9).

7. Connect ducting to the 150mm spigots.

NOTE: Ensure the controller to be used is

wired in accordance with the instructions

supplied with the controller.

8. Switch on the mains electrical supply and

check the operation of the unit.

Fig. 7

Fig. 8

LEN

Fig. 9

Heat Exchanger

Connection Spigot Plate

Plug

5.0 Maintenance

5.1 Cleaning the Unit

1. To ensure optimum performance, the unit

should be inspected every 6 months for build up

of dust or debri and washed every 12 months or

at periods determined by the level of

contamination experienced and according to the

following procedure.

2. Isolate the mains power supply.

3. Undo the four securing screws and remove

the connection spigot plate (Fig. 10).

4. Slide out the heat exchanger (Fig 10). The

heat exchanger should be washed in warm

soapy water and dry thoroughly.

5. Reassemble in reverse order ensuring the

heat exchanger is seated correctly.

6. Switch power supply on and check the

operation of the unit.

NOTE: In heavy polluted internal

environments it is recommended that internal

grilles are fitted with simple washable filters

(ESG150). These filters should be removed

and washed on a regular basis (1-3 months)

or as conditions dictate.

Fig. 10

Heat Exchanger

Connection Spigot Plate

6.0 Notes

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