for Digital, Hybrid or Manual controller HEX390

HEX390 Installation & Commissioning Instructions May 2019 1

HEX390 Domestic Ventilation System with Heat Exchanger

Balanced Pressure Ventilation

Installation, Commissioning & User Instructionsfor Digital, Hybrid or Manual controller

HEX390

Supply Air

Return Air

Exhaust Air

Outside Air

HEX390 Heat Exchange unit

v3.1.762

Smooth-Airby

HEX390 Installation & Commissioning Instructions May 20192

WARRANTY RETURN

Upon installation, please send to the manufacturer, c/o PO Box 8358, Christchurch (on request by the dealer).

Purchaser: _______________________________________________________________

Address: _______________________________________________________________

Description: HEX390 _______________________________________________________________

Serial number: _______________________________________________________________

Purchased from / Dealer: _______________________________________________________________

Dealer invoice number: _______________________________________________________________

Date of installation: _______________________________________________________________

Installed by: _______________________________________________________________

HEX390 Warranty

5 years manufacturing warranty from date of first retail purchase.

This HEX product, when delivered to you in new condition from a HEX authorized dealer and used in normal conditions, will be free from any defects in manufacturing, materials and workmanship for the periods set out above (“Warranty Period”):

Any faulty goods will be repaired or replaced via the HEX dealer.

This warranty is for the manufactured product, it does not include installation or removal.

ContentsHEX390 Warranty 2Pre-checks & Recommendations 3Technical Data 4Kit Contents 5Installation Instructions 6-9Hex Digital Wiring Schematic 9Wiring schematic - Manual & Hybrid 3speed switch 10Wiring schematic - Digital controller 11Digital Installer’s recommended settings: 12Digital Trouble Shooting 12Digital Controller - Commissioning Instructions 13Digital Controller - Commissioning Instructions - Menu Options 14-15Hybrid controller - Installation Set Up 16Hybrid & Manual controller - User Instructions 17-18Digital controller - User Instructions 16

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Please Note: These installation and commission instructions are merely a set of guidelines for effective installation and setup of the system to yield maximum performance. Actual installation may vary due to the architecture and climate. Ensure you fully understand this manual and plan ahead before commencing the work. Unit must be installed by a suitably qualified person and all electrical terminations must be carried out by a registered electrician to New Zealand standards.

using a maximum of 5 supply outlets for house floor areas up to 280m2.

10. The G3 pre-filter should be cleaned or replaced every 9 months or when necessary.

11. Isolate electrical supply before commencing any electrical work.

12. For return ducts located in areas with open fires or open plan kitchens with no extraction above the cooking surfaces, we recommend a pre-filter (see over page).

13. In colder areas an auxiliary inline duct heater is available (see over page).

Pre-checks & Recommendations

1. Before installation, ensure the system suits your requirements.

2. Check that adequate heat sources are present for the optimum performance of the system.

3. Make sure that enough space is available for the installation of the system.

4. Plan and mark out the location of the unit and grilles before commencing.

5. Before cutting holes for diffusers, check that the penetration is clear of ceiling joists, roof structure and electrical cabling or plumbing.

6. For optimum performance, the house should be well insulated and have no open penetrations into the ceiling.

7. Keep all the duct runs to minimum and avoid tight bends.

8. Acoustic ducting (Silentflex) should only be used for supply and exhaust ducts (not return and intake ducts).

9. For optimum performance, we recommend

supply

controller

Extract

Fresh Air

Exhaust Air

HEX

390

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HEX390 unit

Air Flow (max) 390 m3/ hr (110 l/s)

Efficiency (up to) 80%

Dimensions (mm) 400h x 400w x 850l

Weight 20.75 Kg

Filter (replaceable) EU3

Duct connection equivalent diameter 200 mm

Electrical

Rated Voltage 220-240 VAC

Rated Wattage 240W

Fan Fuse 2A Ceramic Slow Blow

Controller Fuse 1A Ceramic Slow Blow

Heater Fuse 10A Ceramic Slow Blow

Diffusers & cut out size

Cut out size

Lounge supply (200mm Swirl Diffuser) 222mm

Bedrooms supply (150mm Cone Diffuser) 180mm

Return (200mm Circular Egg-Crate) 262mm

Optional Extras

Item Code

F7 Filter FBPF7

Filter Box for F7 filter FBP200

Additional 150mm supply HEXext150supply

Additional 200mm supply HEXext200supply

Additional Extract HEXext200extract

750W heater (up to 180sqm) HT

1500W heater (up to 280sqm) HT15D

Technical Data

200mm circular eggcrate - return

150mm cone diffuser- bedroom supply

200mm Swirl Diffuser- lounge supply

Exhaust grille 200dia, 250sq

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Hex

390d

igi

Hex

390h

ybrid

Hex

390m

an

HEX

4roo

mki

t

HEX

3roo

mki

t

HEX

ext1

50su

pply

HEX

ext2

00su

pply

HEX

ext2

00ex

trac

t

HEX Exchanger Body 1 1 1

16mmx 5m drain tube and fitting 1 1 1

Digital controller kit 1

Hybrid digital display controller kit 1

Manual controller kit 1

Hanging wire and fittings 2 2 2

Supply air

200mm swirl diffuser + Adaptor 1 1 1

150mm circular cone diffuser 3 2 1

200mm x 6m Silentflex 1 1

200mm x 3m Silentflex 2 2 1

150mm x 3m Silentflex 3 2 1

200/200/200 ’Y’ connection 1 1 1

200/150/150 ‘y’ connection 1

150/150/150 ‘Y’ connection 1

200/150/150/150 Branch 1

Extract air

200mm Egg crate circular grille 2 1 1

200mm x 6m insulated duct 1

200mm x 3m insulated duct 3 1

200/200/200 ’Y’ joint 1 1

Fresh air supply

200mm square Louvre Grille 1 1

200mm x 6m nude duct 1 1

Exhaust air

200mm square Louvre Grille 1 1

200mm x 6m Silentflex 1 1

Other

6m Tape 1 1 1

50m Tape 1 1

Kit Contents

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Hex UnitIt’s best to install over the bathroom, garage or similar location where occupancy is minimal and also where the unit could be easily accessible for servicing. Securely fix the unit horizontally by using the provided installation kit as illustrated below. Ensure enough space is provided for the installation of the condensation drain adaptor and tubing (located inside the unit). Once duct and fittings connected, unit needs to be level for correct drainage of any condensate.

200mm x 3minsulated

200mm Circular Eggcrate

200mm x 3minsulated

200mm x 3msilent

Supply

Exhaust

Extract

Fresh

200mm x 6msilent

150mm x 3msilent

150mm x 3msilent

150mm x 3msilent

200mm x 3msilent

200mm x 3minsulated

Drain 200mm x 6m

nude

6m

200mm x 6msilent

200mm louvre sq grille200mm louvre sq grille

150mm Cone Diffuser

200mm Swirl Diffuser

150mm Cone Diffuser

150mm Cone Diffuser

200mm Circular Eggcrate

General Layout

•Upto6timesfastertoinstallthantraditionalmethods

•Keyless-notoolrequiredforadjustment

•Ergonomicbuttonsallowrapidadjustment

•Discreetandaestheticdesign

•Loadratedat45kgwitha5:1safetyfactor

•Suppliedasaready-to-usekit

The Gripple Express is a fast locking solution for quick and easy suspension of signage, shopfitting display, HVAC, plumbing, cable containment and lighting.

ADVANTAGES

PRODUCT DIMENSIONS END FIXING

INSTALLATION RELEASE

Gripple Express No.2

Gripple Ltd|TheOldWestGunWorks|SavileStreetEast|[email protected]

www.gripple.comPI-47-ENG

D W

L

Wire rope diameter L (mm) W (mm) D (mm)

2mm 28.4 21.4 11.6

* This product is silicone free

Each ready-to-use kit comes with an end fixing of your choice. All types can be ordered to the length

you require (up to 10 metres or more).

For further detailed information on any of our end fixings, please visit our website or contact us using

the information below.

12

G-XP2-go Express Gripple operation

Installation Instructions

Use supplied Gripple kit to hang unit level

>3m

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HEX

Drain adaptor

P trap in condensate drain hose

Drain Adaptor

Bottom of unit

Drain installationSecurely attach the provided drain adaptor (located inside HEX filter cover) to the bottom of HEX unit. HEX unit must be level. Run the drain tubing from the adaptor to outside with a “P trap”, as illustrated.

Fresh Air and Exhaust GrilleInstall underneath the soffit with a minimum 6m separation between the exhaust and fresh air grille to prevent cross contamination. Use the nude and acoustic ducting (Silentflex) from the fresh air and exhaust grilles respectively to the unit. If access is limited, please consider using through roof cowls, such as the MAD204T, or through the fascia, eg. FACIAGRILLE. Return Grilles Mount the provided return air grilles as suits the homeowner, one in the heat source room and one in the hallway central to the supply grilles. Use the Insulated ducting from the grille to the unit.

Exhaust Air

Return Air filter

HEX body

Supply Air

Return Air

Outside Air

Fresh Air filter

FiltersThe unit is supplied with two G3 pre filters. If required, an F7 filter (FBP200+FBPF7) can be installed in the supply side for extra filtration. Alternatively a standard EU2 filter can be used (FBP200+FBPF2).

Supply Grilles Mount the provided supply air grilles as suits the homeowner, bedrooms and living areas, with a maximum of five outlets for optimum performance. Use the acoustic ducting.

Cleaning the filtersThe internal filters are designed as secondary filters (there should be extended surface filters cleaning the air before reaching the unit). However, when unit filters are heavily soiled, wash or replace the filter material with "HexFilter" (234x380mm) or "HexFilter 222" (222x380mm) for 2015 and earlier models. To wash: use vacuum cleaner to remove excess dust, then wash in warm detergent treated water, keep filters flat or leave in frame to wash.

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HEX Digital Attic box

Terminate separately the grey & brown wires from the HEX unit

Attic control box(for Digital and manual controllers, not hybrid)Attic box can be mounted on or near the unit.

Wall ControllerController (located inside the attic box for transportation and storage), should be installed in the hallway or lounge, adjacent to one of the extract grilles.

The Hybrid controller (with thermometer) can be installed into a standard 86x86mm junction box. It should be installed 1.5m above the floor in a position with good air circulation at room temperature.

Temperature sensor mounted in fresh air inlet

Temperature sensor wire plugs in here

Cat5 cable to digital wall controller

For digital controller, mount with pack glands downwards

In-line Duct Heater (for digital model only)If installing HT or HT15, ensure the duct heater is securely installed horizontally and ensure the air flow meets the minimum required. See commissioning instructions for airflow setting.

Digital sensor (for digital model only)Placed into incoming fresh air flow, through the pre-drilled hole, and fixed with the cable tie.

Installation Instructions (continued)

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Internal on/off Thermostat - Digital ControllerThe thermostat should be disabled for digital controller, as the digital controller should control all airflows.Internal on/off Thermostat - Manual Controller(Optional) The internal thermostat (2core cable from the HEX unit) can be set so the unit turns off if the temperature exceeded the set point (eg if thermostat is set to 30, the unit will turn off if the incoming fresh air is above 30ºC).

Return Air filter

Fresh Air filterOptional

Internal On/Off Thermostat

Electrical Supply 230VAC by installer

Electrical supply must be installed by a registered electrician as per the schematics on pages 10-11.

Heater Connection

Return Air

(Shielded, don't cut)

CablesThe 5 core cable (fan loom) goes to the attic box, for manual and digital versions only. Please refer wiring schematic on p10 for hybrid controller.

The 2 core cable (internal thermostat) is optional for the manual controller - leave unconnected for digital & hybrid versions.

5 core cable Fan loom

2 core cableinternal thermostat (optional for manual controller only)

HEX Digital controller wiring schematic (Not applicable for hybrid or manual controllers)

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The attic box also comes with a two core wire for use with the optional

thermostat.

Wiring schematic - Hybrid controller

Wiring schematic - Manual 3speed switch

Leave 8-10 unconnected

Leave 8-10 unconnected

Attic box - Manual Controller

Two core cables for optional internal thermostat for manual

controller only.Unit switches off when temperature

rises above the set point. Leave disconnected for digital

variant.

HEX Unit - Internal Thermostat (Optional - manual controller)

Two core cables for optional internal thermostat for manual

controller only.Unit switches off when temperature

rises above the set point. Leave disconnected for digital

variant.

HEX Unit - Internal Thermostat (Optional - hybrid controller)

Line-inLine-out

BrownBlue

Line-inLine-out

BrownBlue

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Wiring schematic - Digital controller

PN P1N P3N NCC

240VAC MOTOR HEAT Vent

Circuit BoardPatch lead socket

IsolatorSwitch.

NO

Heat Sensor Plug.

Grey (HT15D Only)

GreenBlueBrownGrey

Mode

Dry-Matic

FanDivertingBranchMotor

Heater

1

2

3

N P

PN

If damper operates in "reverse"change CW<>CCW switch onmotor body to correct.

For digital controller, mount attic box with pack glands downwards

Supplied cable for the duct heater for

HT07 is three core. HT15 is four core

- wire to earth, P3 & N. Note wiring connection

details supplied with heater.

Attic Controller

(for HT15 only)

Heater (for HT07 &HT15)

Optional Attic damper kit

1

2

3

PN P1N P3N NCC

240VAC MOTOR HEAT Vent

Circuit BoardPatch lead socket

IsolatorSwitch.

NO

Heat Sensor Plug.

Grey (HT15D Only)

GreenBlueBrownGrey

Mode

Dry-Matic

FanDivertingBranchMotor

Heater

1

2

3

N P

PN

If damper operates in "reverse"change CW<>CCW switch onmotor body to correct.

Diverting branch motor

Hall controller

For heated units only

Heat sensor

For attic damper kit, ensure the heat sensor is in duct, upstream of filter box.

HighMedium Terminate

Terminate

E

BlackBrownGreyBlueGrn/Yel

Basic HEXbody wiring to attic box

Supplied cable for the fan unit is five core - wire to N & P1

(HT15 only)

N E

P1

LowN

HEX unit

Terminateseperately

Cable for electrical supply is three core

and pre-wired to the attic controller.

NO NC

See p8 for full image

Terminate grey & brown wires from the HEX unit separately

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Installer’s recommended settings for digital controller:Default Installer

recommended

1. Heater Kit Yes Yes / No

Heater ON time: 19:00 ........ : ........

Heater OFF time: 07:00 ........ : ........

2. Max Fan Speed 60% ....%

3. Fan Speed Heat 45% ....%

4. Winter Mode Yes* Yes / No

If Yes, shut down temp: 0 °C .....°C

5. Filter Timer No Yes/No

If filter timer Yes: 240 days .....days

6. I/Side Ref Temp 18°C ....°C

7. O/Side Ref Temp 12°C ....°C

8. O/Side Degree Offset 0°C ....°C

9. I/Side Degree Offset 0°C ....°C

10. Heat P/band 5°C ....°C

11. Summer Temp S/down 27°C ....°C

12. User Sys Off On / Off

13. Factory Reset

• Optional attic damper kit installed No Yes / No

Installer Details:

NB: The attic damper kit option is always available on the main interface, but it does not affect operation if a damper is not installed

All electrical work must be conducted by a qualified electrician to NZ standards.

*some models Winter mode default is 'No'

Symptoms Solutions

Fans not operational • Check circuit breaker in the mains switch board

• Check power to the hall controller. If hall controller is active, check the 2A fuse in the attic controller, after isolating the power to the unit.

Fan too noisy • Check the Max Fan Speed setting match the recommended setting for the house size, lower the speed of fan if necessary

Outside temperature incorrect • Set the correction in commissioning menu

Inside temperature incorrect • Set the correction in commissioning menu

Heater Fault • Check fans are operational

• Check fan speed heat setting, increase the value if necessary

Unexpected Filter Full notification • Check the setting in commissioning menu and adjust if necessary

Trouble Shooting - Digital Controller

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The Heat Recovery Digital Controller has a number of features available to customize the system to suit house size, layout and user preferences.

The Setup menu is accessed by pressing the ↑ & ↑ buttons together for about 5 seconds until the display reads ‘Setup Menu’.

The controller comes preset with default factory settings, these can be reinstated using menu item ‘Factory Reset’ (number 13 on next pages). If the unit is not set up correctly to suit the house, performance may be reduced.

There are a number of options which can be scrolled through by pressing the Mode button as below.

If no button is pressed within 15 seconds the controller automatically reverts to normal operation. Once a button is pressed a backlight will operate and remain on for 20 seconds after the last keystroke.

Press ↑ button to toggle between Yes/No or other options, then press ‘Mode’ to advance through the menu. Once a setting is changed on the menu, it is automatically registered.

Hold down the ‘Mode’ key to accelerate through the menu,

Options are on following pages.

Please note: if settings are changed from recommendations, performance of the unit may be reduced.

Display Key : Δ - Outside Air Temperature□ - Inside Air TemperatureWinter - winter mode is onWint off - winter mode has automatically

shut the system offH - Heater is fitted

Digital Controller - Commissioning Instructions

Fan Speed Status

Outside Air TempΔ

Operating Mode

Inside Air Temp

Fan Speed Increase [Y/Ntoggle]

Time

Fan Speed Decrease

Mode [to scroll]

Use up arrow to change

Use Mode button to scroll through options

Press up and down arrows together for 5 secs to get to Setup Menu

The following commissioning menu is for v3.1.762 . Programme version number is written on the back of each board. The version number will also display when the device boots for the first time following any power outage.

Δ

□ □

See p19 for User Instructions

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1. Heater Kit Yes/No (default Yes)If No - heater options are removed from all menus. If Yes - heater options are available in User menu - Heater On/Off for continuous or night heat (to times as set below) . To set night heat option:

• press up arrow to select Yes, then:

• press mode to display ‘Heater Times’>display then changes automatically to show the current settings (default: ) >display changes again to ‘Change Times’ Yes/No (default No).

• At this point, use then to select Yes & change the times.

• Select desired Heater ON time in Hours:Mins using or

• Select desired Heater OFF time in Hours:Mins using or

• Heater Test Yes/No (default No)

• change to Y, heater test will be performed. If there are any faults (including no heater connected), ‘Heater Fault’ will display. (See menu item 3.Fan Speed Heat for possible Heater Fault causes.) To reset Heater Fault display, turn unit off.

2. Max Fan Speed (default 60%) – Range is 35% to 100% adjustable in 1% increments using up & down arrows. For a large house set to a max of 100%.

House size Max SettingUp to 120m2 50%

120m2 - 180m2 70%180m2 - 250m2 100%

280 + Two or more units recommended

3. Fan Speed Heat (default 45%) – Range is 30% to 60% adjustable in 1% increments using up & down arrows.

Fan Speed Heat sets a minimum speed for the fan to ensure enough airflow for the heater to operate. There are many duct fan combinations, some more restrictive to airflow than others. Therefore, when setting up, the installer must check that the heater operates without ‘Heater Fault’ flashing on the display. ‘Heater Fault’ is triggered when the heater is operating but draws no current, this is most often due to insufficient airflow causing the airflow proving switch to cut off. If there is insufficient airflow, increase the ‘Fan Speed Heat’ setting. Heater fault may also be caused by manual reset thermal cutouts which may need to be reset.

4. Winter Mode Yes/No (default Yes). Winter mode shuts the system down when the outside air temperature gets below eg 2°C. If Winter Mode is on, another menu item will appear to allow adjustment of actual shut down temp: Range -2°C to +5°C.

Heater ON 19:00Heater OFF07:00

Digital Controller - Commissioning Instructions - Menu Options

Digital Controller - Commissioning Instructions (continued)

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Digital Controller - Commissioning Instructions (continued)

5. Filter Timer Yes/No (default No) – Controller counts hours run by the fan and when filter is due for a change the display flashes with ‘Swap Filter’. If filter timer is set to ‘Yes’, another menu appears allowing filter period adjustment (240 day) (range 150 - 240 days). The filter timer can be reset in the user menu at any time. The timer should be reset after the filters have been cleaned or replaced.

6. I/Side Ref Temp (default 18°C) Range 16-24°C. This is the reference temperature for the inside of the house, used for:

• Heating – when house temp (IS) is lower than 18°C (default) and outside temp (OS) is lower than 12°C (default) the heater will operate (if fitted).

• Summer – when house temp (IS) is higher than 18°C (default) and outside temp (OS) is higher than 27°C (default) the unit will shut-down.

7. O/Side Ref Temp (default 12°C) Range 8-16°C. This is the reference temperature for the outside air, below which heater operates (if fitted).

8. O/Side Degree Offset (default 0°C) this allows unit to be calibrated in the unlikely event that outside air temperature reads too high or low (adjustment range -10°C to + 10°C).

9. I/Side Degree Offset (default 0°C) - As above.

10. Heat P/band (default 5°C) Range 1-7°C. Heat Proportional Band - When heater is fitted and conditions call for its operation, heater will start heating at 20% when OS (outside) drops to reference temp (default 12°C), and will operate at 100% when temperature has dropped by a further (default) 5°C (ie when OS is 7°C).

11. Summer Temp S/down (default 27°C) Range 25°-35°C. When OS (outside temp) is greater than 27°C and IS (inside temp) is greater than 18°C, the system shuts down.

12. User Sys Yes/No (default No) - when set to ‘Yes’, there is an option in the User menu to turn the system On/Off. Once the system has been turned off, any key may be pressed to return the unit to regular operation.

13. Factory Reset Yes/No (default No). ‘Yes’ resets all menu items to the factory default settings, these default settings are shown in brackets above. This option will ask for confirmation to ‘Erase Settings?’ before performing the factory reset.

• Optional Attic Damper Kit. A diverting branch can be attached to divert the intake from outside air to the attic to utilise the heat gain from roof during winter months. Press mode and up arrow together until ‘Damper is on’ or ‘Damper is off’ displays. The user can then select between ‘Change damper? YES’ or ‘Change damper? NO’ then displays. Use the up arrow to change between the two settings and press the mode key to select.

See p19 for User Instructions

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For assistance with commissioning, call Smooth-Air on 0800 SMOOTH (0800 766 684) or email [email protected]


Hybrid Controller - Installer Set Up

To configure the Hybrid Controller for the HEX390 system: After confirming current clock after power up, you will enter home screen.From home screen, touch and hold both the menu and down arrow buttons for 3 seconds to enter (or exit) setup mode.

*DP - Default & Preferred*P - Preferred*D - Default

Installer Set Up Table:

Index Description Options

1 System Type 0: HRV without sensor *DP1-4 not available

2 Core Bypass 0: Disabled *D (P for standard setup)1: Enabled (*use if bypass feature

available)

3 Filter Warning 0: Disabled *P (We recommend 5-8 months, which isn't an option below)

1: Enabled *D

4 Filter Warning Period 1: One Month 2: Two Month3: Three Month *D4: Four Month *P

5 Fan Control Type 1: Man 3 speed Fan *DP: (cycles Low - Med - High - Low)(2-7 not available)

6 Auto Fan Setting (not available)



9 Temperature Scale 0: °F1: °C *DP

10 Display Temperature Adjustment

Range: -2°C to 2°C0°C *DP

11 Keypad Lock Option 0: All keys are available *DP1: Menu button is locked2: All keys locked except on/off

button3: All keys locked

Setup mode screen

Press menu button to change index and press up or down arrows to change the option value in Setup mode.Press and hold both the menu and down arrow buttons for 3 seconds to exit and save settings.

'Set up mode' indicator

See p18 to set schedule

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Hybrid Controller - Installer Set Up Hybrid Controller - User Operating Instructions

Troubleshooting Tips

If... Then...

Missing one or more fan speed

Check the wiring of terminals FH, FM and FL is correct. Check system type and fan control type in ths Installer Set Up table is correct (index 1 & index 5)

Bypass function doesn't work

Check the HEX system has a bypass function. Check wiring of terminal BOP is correct. Check Bypass is enabled in index 2)

Filter warning icon is flashing

Inspect the filters and clean or replace if necessary. (We recommend every 5-8 months). The counter can be reset by pressing and holding both the menu and enter/return buttons simultaneously

A button doesn't work Check system configuration for keypad lock (p16 index 10).

Air Quality bar flashing Check index 1 - should be set to 0 - without sensor.

Hybrid Manual Digital Display Controller with Programmable Timer & Thermometer - Manually change the fan speed of the unit to high, medium and low. - Or set a schedule to automatically change the fan speed during the day, to meet the

changes in demand of household activities.

Hybrid - manual controller with digital display

Power on or off Press On/Off button to power on or off the unit. The indoor temperature will be displayed whether unit is on or off. icon will display when off.

Clock setting After powering on (or after pressing menu button), the system enters the clock setting mode, and display will show a flashing time. Press up or down arrows to set clock, press Return button to confirm and exit.

Fan setting From the home screen, press the up or down arrows to increase or decrease the fan speed (can only be changed if fan scheduler is disabled).

Bypass setting (optional extra) If core bypass is installed, bypass can be activated or deactivated by pressing the Return button from the home screen. This function can be used during summer months when cooling of indoor environment is required.

Keypad lock See p16 for Keypad lock functions.

Schedular See over page to scheduler setting

1. Time Clock Setting mode 2. Filter Warning 3. Room Temperature 4. Real Time Clock Display 5. Key Pad Lock 6. Next Step In Schedule Setting 7. Exit Schedule Setting 8. Bypass Setting 9. Fan Speed 10. Air Quality Bar (not available)11. System Off Indicator 12. Schedule Setting and Indicator 13. Installer Test 14. Installer Setup menu

Clock setting screen, use arrows to set clock, enter/return to exit

Home screen

On/Off Menu Up Down Return

1 2 3

4

5

6

7

10 9 8

14

13

12

11

Capacitive buttons:

Flashing

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Hybrid Controller - User Operating Instructions (cont)

3 speed switch

Manual Controller This unit has High / Medium / Low speeds which the homeowner can use to regulate the fresh air amount to suit the load. The 3 speed switch has four settings: Typically:3 - High - where a number of people are living in the house and/or outside temperatures are

moderate2 - Medium - less people in the house and/or colder outside temperatures1 - Low - mainly to keep air fresh in the home during extremely cold conditions.0 - Off

Manual Controller - User Operating Instructions

Timer schedule setting - Scheduler is used to change the fan speed or turn unit on or off during specified periods of the day to suit household activities eg cooking etc.

To turn Scheduler on or off: Press the Menu button once to set time clock, press again to enter Schedule Setting mode. Up or down buttons can turn schedule function on or off, selected option will be flashing. Press Return button to confirm.

To programme scheduler function: With Scheduler on, follow and repeat the steps below to programme up to 8 time slots:

1. Select time slot: press the up or down arrow to select the time slot (1-8), press Return to confirm which slot & move to next step.

2. Select time: Press up or down arrow to select time for this slot, press Return to confirm & move to next step.

3. Select fan speed: Press up or down arrow to select fan speed for this slot, press Return to confirm & move to next step.

4. Select next time slot or exit: Press up or down arrow to select next time slot (horizontal arrow icon) or Exit door icon to exit scheduler. Press Return to confirm selection.

Press Menu button to disable/enable the shedular function.

The scheduler function is based on a 24hr time slot and repeats daily.

Example schedule below:

24 hr cycle

Time slot: 1 2 3 4 5 6 7 8

Start time: 3.00 7.30 9.30 16.00 18:00 19.30 21.00 23.59

Fan Speed: Low Medium High Medium Low Medium Low OffExample of schedule with high air exchange during the day.

Generally larger houses need higher fan speeds to provide optimal air changes.

Next time slot

Save and exit

Time slot is disabled

Time slotStart time

Selected fan speed for this time slot

Scheduler on Scheduler off

See p17 for buttons and display icons key

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Digital Controller This digital controller allows the user to adjust fan speed from high to low (fan limits are set in the commissioning menu to suit the size of house and system layout).The controller will automatically shut down in summer if outside air temperature (Δ) exceeds 27°C and the home is warm. There are a number of other features available at time of installation which will need to be discussed with the installer when the unit is commissioned (see Digital Controller Setup instructions p6-9). They include:-

• Optional supply air boost heater (when heater fitted) is controlled automatically when outside air temp (Δ) is less than 12°C and home is cold. This is indicated by “H” with bar symbol in the unit display. Heat is controlled over a proportional band so that as Δ gets colder, heater output increases to maximum.

• Optional winter off mode shuts down the fan automatically when outside temperature (Δ) is less than 2°C. This is indicated by “Wint off” on the unit display.

• Optional User System On/Off is available in User Menu, indicated by “OFF” on unit display. Press any key to return the unit to regular operation.

• Optional Filter Timer measures the hours run by the fan and gives a flashing display when the filter needs to be cleaned/replaced.

• Clock function has battery back-up in the event of a power failure. Time can be set/adjusted by pressing mode and ↑ buttons together until “Entering Menus” then “Set Clock” appears. Time can then be adjusted using up & down buttons, once correct time is set, press “mode” to save new setting.

• Optional Attic Damper Kit. A diverting branch can be attached to divert the intake from the outside air to the attic, to utilise the heat gain from the roof during the winter months. Press mode and up arrow together until ‘Damper is on’ or ‘Damper is off’ displays. The user can then select between ‘Change damper? YES’ or ‘Change damper? NO’ displays. Use the up arrow to change between the two settings and press the mode key to select.

To get to User Menu: press and hold mode button, continue holding while until “User Setup” shows. Use the up arrow to change the options, Mode button to select.

Digital controller

Fan Speed Status

Outside Air Temp(Δ)

Operating Mode

Inside Air Temp(□)

Fan Speed Increase

Time

Fan Speed Decrease

Mode button

Δ

□

Automatic Digital Controller - User Operating Instructions

Smooth-Airby


HEX390 Domestic Ventilation System with Heat Exchanger

Balanced Pressure Ventilation

HEX390

Smooth-Airby

Documents

for Digital, Hybrid or Manual controller HEX390