OJ Electronics AHC-3000 Instructions Manual

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INSTRUCTIONS

Commissioning guide for AHC-3000

AHC-3000

CONTROL SYSTEM FOR COMPACT AIR HANDLING UNITS

INSTRUCTIONS Commissioning guide for AHC-3000

Contents

1. Introduction ......................................................................4

2. Screen saving mode ...............................................................5

2.1 Lost connection to the HMI-35 touch display........................................5

3. Home screen .....................................................................5

4. Password protected settings .........................................................6

5. Selecting language in the HMI ........................................................6

6. Setting current time and date.........................................................7

7. Selecting system measuring units (°C, °F, m3/h, l/s, CFM) ..................................8

8. Fire settings ......................................................................8

8.1 Fire alarm ...................................................................9

8.2 AHU internal ﬁre alarm .........................................................9

9. Balancing ........................................................................9

10. Update SW and read out current SW version ...........................................10

11. Room info readout ................................................................11

12. Alarms readout and reset...........................................................11

13. Communication set-up ............................................................12

13.1 Modbus TCP/IP - DHCP .......................................................12

13.2 Modbus TCP/IP – Static IP .....................................................13

13.3 MAC address ...............................................................13

13.4 Modbus RTU................................................................13

13.5 Bluetooth...................................................................14

13.6 Cloud: activation, status and settings ............................................14

14. Conﬁguring the Application .........................................................15

14.1 Conﬁguring the AHU type ......................................................15

14.2 Conﬁguring the temperature sensors .............................................16

14.3 Conﬁguring the ﬁlters .........................................................17

14.4 Conﬁguring the pressure transmitters for ﬂow and deicing ............................18

14.5 Conﬁguring the visualisation of the current power ...................................19

14.6 Conﬁguring the fan alarm ......................................................20

14.7 Conﬁguring the heating........................................................21

14.8 Conﬁguring the cooling........................................................22

14.9 Conﬁguring the supply air / single duct supply air system .............................23

15. Conﬁguring the AHU ﬁeld components ................................................24

16. Auto conﬁguration ................................................................25

17. Digital input conﬁguration ..........................................................26

18. Commissioning ..................................................................27

18.1 Commissioning the fans .......................................................27

18.2 Commissioning the heat recovery ...............................................28

18.3 Commissioning the heater .....................................................29

18.4 Commissioning the cooler .....................................................30

18.5 Commissioning the temperature sensors ..........................................31

18.6 Commissioning the CO2 sensors ................................................32

18.7 Commissioning the humidity sensors .............................................32

INSTRUCTIONS Commissioning guide for AHC-3000

Contents

19. Control settings ..................................................................33

19.1 Fan control mode: Constant pressure ............................................33

19.2 Fan control mode: Constant air ﬂow..............................................34

19.3 Fan control mode: Extract air slave ..............................................35

19.4 Fan control mode: Supply air slave...............................................36

19.5 Fan control mode: Constant motor speed % .......................................37

19.6 Air-control loop settings .......................................................38

19.7 Boost setpoint...............................................................38

19.8 Zero calibrating the pressure transmitters .........................................39

20. Temperature control settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

20.1 Temperature-control loop settings ...............................................41

20.2 Heating coil settings (water coil) .................................................42

20.3 Heating coil settings (electric coil 1) ..............................................43

20.4 Cooling coil settings (water cooling coil) ..........................................44

20.5 Cross-ﬂow heat exchanger settings ..............................................45

20.6 Counter-ﬂow heat exchanger settings ............................................46

20.7 Rotary heat-exchanger settings .................................................47

20.8 Summer night cooling (free cooling) ..............................................48

21. Operation time schedule ...........................................................49

21.1 Operation modes ............................................................49

21.2 Setting the active schedule period and fall-back speed ..............................50

21.3 Setting the standard daily-operation pattern .......................................51

21.4 Copying a daily schedule to one or more days .....................................52

21.5 Scheduled operational exceptions ...............................................53

INSTRUCTIONS Commissioning guide for AHC-3000

Note

It is important for commissioning engineers and installers to read this commissioning guide

carefully before starting to conﬁgure and commission the OJ AHC-3000 system.

This commissioning guide provides valuable information which must be followed if the OJ

AHC-3000 system is to work ideally and provide maximum comfort while minimising energy consumption.

This commissioning guide is intended to be used by the following individuals:

• The manufacturer/AHU producer

• The commissioning engineer

• The system integrator

• The installer

• The service technician

• The daily user – see www.ojelectronics.com

1. Introduction

The ACH-3000 from OJ Electronics A/S is an intelligent and at the same time simple-to-use

controller for air handling units. The OJ ACH-3000 system can control one air handling unit and, when connected in a network, it is possible to control and monitor up to 25 air handling units from a single controller and HMI* display. *=Human Machine Interface

This commissioning guide provides valuable information when commissioning an ACH-3000 air

handling unit at the factory. After the air handling unit is installed in the building, the installer and/or system integrator will also ﬁnd essential information in this guide to get the air handling unit to work ideally and provide maximum comfort with minimum energy consumption.

It is crucial that anyone who is in contact with the ACH-3000 system, – manufacturers, installers,

service technicians and system integrators – must read this commissioning guide thoroughly before starting to commission the AHC-3000.

For the manufacturer

The AHC-3000 has been developed with the aim of making the AHU controller set-up as easy and

user-friendly as possible. The AHC-3000 has a number of pre-conﬁgured most frequently used AHU applications. The conﬁguration and settings are simple and easy to make using the hand-held HMI display.

For the commissioning engineer

Commissioning, setting the operation schedulers and optimising the energy of the AHC-3000 on-

site is done very easily from the HMI touch display.

For the installer

For the installer on-site, all internal cabling, wiring and conﬁgurations have already been made at the

factor. Therefore, all you need to do is supply the AHC-3000 AHU with power.

For the system integrator

The OJ AHC-3000 is one of the most ﬂexible systems on the market in terms of BMS system

integration. Standard features worth mentioning: The Modbus RTU & TCP/IP is built-in. The associated protocols can be downloaded from www.ojelectronics.com.

For the service technician

On the AHC-3000-T, all service settings and software updates can be done from a smartphone.

For the user

The AHC-3000 has several interfaces, such as: OJ-Cloud, Bluetooth, AHC-3000 app, HMI-20T room

touch display and the HMI-35 touch display from where the daily user can change temperature and operation settings and receive alarms. Basic settings are password protected.

INSTRUCTIONS Commissioning guide for AHC-3000

2. Screen-saver mode

If the HMI-35 display hasn't been touched for 60 seconds, the display will go into screen saver

mode. The display will show the current status of the air handling unit: see ﬁg. 2.1

Note! Flashing HMI: If the HMI-35T is ﬂashing (black/white screen), the SW in the HMI is being updated from the AHC-

3000 controller.

Please wait two minutes until the ﬂashing stops and the HMI-35T is ready to use.

Fig. 2.

Boost mode

At least 1 “A” alarm is active

AHU in stop

At least 1 “B” alarm is active

Rest time is displayed Current temperature

Current temperature Current temperature Current humidity AHU in low speed

Current humidity Current humidity Current temperature

Current humidity

2.1 Lost connection to the HMI-35 touch display If the display continuously show “Lost communication”: _ Check the connection between the controller and the HMI-35 display

3. Home screen

When the display is in “Screen-savermode”, one touch will start up the display. The ﬁrst picture on a stand-alone unit. From this window it is possible read out current values and make dierent

entries and settings.

INSTRUCTIONS Commissioning guide for AHC-3000

4. Password-protected settings

Some menus are password protected. Settings like temperature setpoint, language, time and other similar user settings are not password

protected.

Other installer and service menus may be protected by either a “Service password” or an “Installer/

Service password”

• Service password = 1 1 1 1

• Installer password = 1 1 1 2

The password expires in 60 minutes without

operation.

5. Selecting the language in the HMI

To start with, we suggest that you select your

preferred language.

Enter the menu level via the “Menu” in the upper

right corner of the home screen.

From here, select “Settings”

Fig. 4.3

Available languages: (see ﬁg. 4.3)

_ English _ Française _ Deutsch _ Dansk _ Svenska _ Norsk _ Suomi _ Español _ Polski _ Pyсский _ Italiano _ Nederlands

After selecting the preferred language, press “Back” Your selection is automatically saved in the controller after selection.

INSTRUCTIONS Commissioning guide for AHC-3000

6. Setting the current time and date

The local time and date must be set during the commissioning of the AHC-3000. Without power, the AHC-3000's current time and date will be supported from a backup battery for at

least 12 months.

Select the local area time and date format (see ﬁg. 6.1)

If you want to set/change the current “Time and Date”, select the parameter

(date, month, year) that you want to change by marking the current value ﬁeld (see Fig.no. 6.2) and use the up and down buttons to make your individual adjustment for: date, month and year. Repeat this procedure for the current time.

Auto daylight saving

Select Daylight saving time = “On” Daylight saving will be activated according to the

local daylight saving calendar

Auto save function

After setting the current time and date, press

“Back”.

Your settings are automatically saved in the

controller after selection.

Fig. 6.1

Fig. 6.2

INSTRUCTIONS Commissioning guide for AHC-3000

7. Selecting system measuring units (°C, °F, m3/h, l/s, CFM)

According to local demands, it is possible to select the measuring units:

Select °C or °F – only one selection is possible. Select l/s, m3/h or CFM – only one selection is possible.

After setting the measuring units, press “Back”. Your selection is automatically saved in the controller after selection.

8. Fire settings

The AHC-3000 supports two dierent kinds of ﬁre alarm: Fire alarm: detected from a ﬁre thermostat or an automatic ﬁre detection system (AFD). Internal ﬁre alarm: detected from the internal supply air and extract air temperature sensors.

Temperature units

°C Degrees Centigrade °F Degrees Fahrenheit

Air ﬂow units

/h Cubic metres per hour

l/s Litres per second

CFM Cubic feet per minute

Fig. 7.1 Fig. 7.2

Fig. 7.3

Fig. 8.1 Fig. 8.2

Fig. 8.3

INSTRUCTIONS Commissioning guide for AHC-3000

8.1 Fire alarm This ﬁre alarm is detected on a digital ﬁre input on the AHC-3000 controller. The signal may possibly come from an automatic ﬁre detection system (AFD) or an external ﬁre

thermostat placed in the duct system.

If the digital input (ﬁre alarm) detects the ﬁre alarm (ﬁre alarm = open contact), the AHU will enter

ﬁre mode and the fan speed will assume the status selected in parameter “Supply fan speed” /“Exhaust fan speed” (see ﬁg. 8.3).

If a 0% fan speed is selected in both parameters, the AHU will stop and the dampers will close.

8.2 AHU internal ﬁre alarm This ﬁre alarm uses the supply air and exhaust-air temperature sensors in the AHU to detect a ﬁre

alarm. If the current value of the “Supply temperature” or “Extract temperature” is beyond the setpoint (see ﬁg. 8.3), the AHU will go into ﬁre alarm mode and emit a ﬁre alarm: “A” alarm. This ﬁre alarm will stop the fans.

9. Balancing

This function allows the installer to maintain a constant fan speed during the air-distribution

adjustment of, for instance, the manual dampers in a CAV application.

Selecting “Lock fan” will set the fan speed at the current value. The fans will remain at this speed for eight hours – and the system will automatically return to normal

operation after this period of time has elapsed.

If the balancing job is ﬁnished before time runs out, you can manually return the function to “Normal

operation”.

Info: Frost protection of the water heating coil is active during the balancing function – the normal

temperature control is active.

INSTRUCTIONS Commissioning guide for AHC-3000

10. Update SW and read out the current SW version

To read out the SW version for the AHC-3000 and the connected HMI-35T

Updating the SW

To update the SW in the AHC-3000 and in the HMI-35T hand-held terminal, the updating SW must

be downloaded to the AHC-3000 controller using:

• OJ Air PC Tool

• AHC-3000 APP

• OJ-Air Cloud

To update the SW in the AHC-3000 controller, either power o the controller for at least ten seconds or press: _

The update progress can be followed on the HMI-35T…

If the software update includes a new HMI software version, the

HMI display will ﬂash for about thirty seconds while the update is in progress.

Note

When the update button is activated, the AHU will

go into operating mode: “Service stop”. _

When the new software is active in the AHC-3000, the “Update” button

disappears, and the new software versions are displayed. The AHU will remain in operating mode, “Service stop", until another operating mode is selected.

INSTRUCTIONS Commissioning guide for AHC-3000

11. Room info readout

To read out the SW version for AHC-3000 and the connected HMI-35T

A simple status overview for the AHU system can be displayed by selecting _

Depending on the conﬁguration, the current status and values will be displayed:

√ Current value on all temperatures in the AHU

• Only mounted and conﬁgured temperature sensors will be displayed

√ Current room temperature

• Only displayed if a room sensor (OJ-Air-HMI-20T) is installed and conﬁgured

√ Current value on all measured air ﬂow in the AHU

• The current value is displayed if a pressure transmitter is installed across the fans.

√ Current ﬁlter pressure drop on all measured ﬁlters in the AHU

• The current pressure (Pa) will be displayed if a pressure transmitter is installed across the ﬁlters

12. Alarm readout and reset

If an alarm bell is displayed on the overview picture, one or more alarms are active in the system.

= One or more “A” alarms and possible

“B” alarms

= One or more “B” alarms

To enter the alarm overview, press the alarm bell symbol.

INSTRUCTIONS Commissioning guide for AHC-3000

Reset alarms: Clear Alarms will clear all active alarms. After activating “Clear alarms”, any alarms still active in the system will be re-triggered and shortly

after show up again in the alarm overview.

Up to 16 active and logged alarms will be listed.

Alarm details and description: Select the actual alarm (*1)

Latest cleared alarms will be listed in the

alarm log: “Log date & alarm number” (*2)

13. Communication set-up

The AHC-3000 can communicate on:

• a BMS system via Modbus TCP/IP and Modbus RTU (see 13.1)

• Directly connected to a computer via a LAN cable (RJ45) (see 13.2) The AHC-3000 can also be connected to the OJ Cloud via the internet or a mobile app via Bluetooth

13.1 Modbus TCP/IP – DHCP If the AHC-3000 is connected to a local area network (LAN) with a DHCP server, select “Dynamic

IP” under the menu “Static/Dynamic IP”

The DHCP server will automatically set all the necessary information in the AHC-3000, including: IP

address, Netmask, Gateway and DNS.

As soon as the AHC-3000 receives an IP address, Netmask, Gateway and DNS from the DHCP

server, this information will be found in the menu below.

(*2)

(*1)

INSTRUCTIONS Commissioning guide for AHC-3000

13.2 Modbus TCP/IP – Static IP If the AHC-3000 is connected to a stand-alone network without a DHCP server, or via a normal patch

cable to a local computer, select “Static IP” under the menu “Static/Dynamic IP”.

After selecting “Static IP”, specify the IP-address and the Netmask. Normally it is not necessary to

specify the Gateway, Primary and Secondary DNS. These values are normally sent automatically from the AHC-3000 after connection.

If the AHC-3000 is connected to a local computer: Remember to adapt the settings on your

computer to the settings on the AHC-3000.

If the local IT department has reserved a speciﬁc ﬁxed IP-address for the AHC-3000, also select

“Static IP”. After selecting “Static IP” specify the correct communication settings, such as: IPAddress, Gateway, Primary and Secondary DNS. You will receive this information from the local IT department.

13.3 MAC address MAC address is a static number issued by OJ Electronics A/S. It cannot be changed.

13.4 Modbus RTU If the AHC-3000 is connected to a BMS system which is a communication Modbus RTU, you must

specify the communication parameters like:

• Modbus address

• Baud rate

• Parity

• Number of stop bits

The AHC-3000 is connected to the BMS Modbus network via the RJ12 plug connector marked “BMS Modbus RS485”, using a RJ12 patch cable.

INSTRUCTIONS Commissioning guide for AHC-3000

13.5 Bluetooth To use Bluetooth, you must use the AHC-3000-B. The Bluetooth must be activated before use.

After activating Bluetooth in the AHC-3000-B,

you may start a scan from your Bluetooth device (smartphone, tablet or similar)

The AHC-3000-B will now appear on the list of

Bluetooth devices. Select “Connect” on your Bluetooth device.

13.6 Cloud: activation, status and settings

To permanently connect the AHU to the OJ-Cloud, use the type ACH-3000-T and connect it to the

Internet (see index 13.1 & 13.2).

Password protection

√ Select password protection (On/O)

Internet status √ Status on the Internet connection (No cable/Connecting/Connected/Error)

INSTRUCTIONS Commissioning guide for AHC-3000

Cloud status √ Status of the cloud connection (Not connected/Connecting/Connected/Access denied/Error)

Device ID √ Device ID on the AHC-3000 controller

Terms & conditions

√ You must accept the Terms & Conditions before the AHC-3000 will connect to the OJ Air Cloud

√ Terms & Conditions are available on https://oj.hvac-cloud.com

Note! After accepting the Terms & Conditions, the AHC-3000 will start uploading data to OJ Air

Cloud

Activation key

√ Read out the activation key. This must be used to log on to your OJ Air Cloud® account.

Note! Find more information for OJ Air Cloud® on: https://oj.hvac-cloud.com

14. Conﬁguring the application

Now we will start to conﬁgure the application. First, select the AHU type from among these main categories:

Note! The AHC-3000 must be in the operational mode “Service stop”. _

1. Rotor heat exchanger

2. Counter-ﬂow heat exchanger

3. Cross-ﬂow heat exchanger

4. Mixing

5. Supply

6. Extract

Note

If you use the “Autoconﬁguration” function (see index 16 in this manual), you must make the autoconﬁguration” before conﬁguring the AHU type (see index 14.1 below).

14.1 Conﬁguring the AHU type

Here, select the type of AHU (see ﬁg. 14.1)

After selecting the AHU type, select the size* of the AHU ( see ﬁg. 14.2………14.7) *Size is the max. volume of the AHU in m3/h A number of predeﬁned AHU sizes are listed:

Fig. 14.1

INSTRUCTIONS Commissioning guide for AHC-3000

Fig. 14.2 Fig. 14.3 Fig. 14.4 Fig. 14.5 Fig. 14.6 Fig. 14.7

Rotor Counter ﬂow Cross ﬂow Mixing box Supply air Extract air

14.2 Conﬁguring the temperature sensors

Here, select the temperature sensors in the AHU from among these options:

• PT-1000*

• NTC 12K

• Supply air temperature*

• Outdoor air temperature*

• Exhaust air temperature*

• Extract air temperature*

• Water temperature* *= factory setting

All air-temperature sensors are pre-selected from the factory. Only the water

temperature is auto selected if a water heating battery is conﬁgured.

INSTRUCTIONS Commissioning guide for AHC-3000

14.3 Conﬁguring the ﬁlters

Here. select the ﬁlter monitoring from among these options:

It is possible to conﬁgure up to 2 ﬁlters in an AHU:

• Outdoor air ﬁlter

• Extract air ﬁlter

Filter alarm

Filter alarm function can be selected as:

• Timer function

• Filter switch, via digital input

• Static ﬁlter alarm, via pressure transmitter

• Dynamic ﬁlter alarm, via pressure transmitter

Filter alarm settings are made under “Commissioning”.

INSTRUCTIONS Commissioning guide for AHC-3000

14.4 Auto-conﬁgured pressure transmitters for ﬂow and deicing

Here you see the autoconﬁgured ﬂow & deicing pressure transmitters:

• Supply ﬂow

• Exhaust ﬂow

• Pressure de-icing

These 3 pressure transmitters are all auto mounted via Modbus communication and this window is a visualisation only. The connected pressure transmitters are for measuring the ﬂow of the fans and the pressure drop over the heat exchanger (only cross-ﬂow and counter-ﬂow heat exchanger).

INSTRUCTIONS Commissioning guide for AHC-3000

14.5 Autoconﬁgured drives and visualisation of the current power

Here you see the autoconﬁgured drives which can display the current power consumption.

• Rotor

• Supply fan

• Exhaust fan

These three power components are all auto-mounted via modbus communication and this window is only a visualisation of the connected power components.

INSTRUCTIONS Commissioning guide for AHC-3000

14.6 Conﬁguring the fan alarm

Here, select the type of fan detection from among these options:

• Tacho

• Digital input

The fan alarm can be conﬁgured as “Tacho” or as “Digital input”

The Tacho alarm is detected on a digital input from a pulsating Tacho signal from the motor. When this pulsating Tacho signal stops and the motor should actually be running, the system will emit an alarm.

The digital input is also detected on a digital input from either the alarm relay on the motor/drives or over current alarm relay. When this digital alarm signal contact is “closed”, the system will emit an alarm.

INSTRUCTIONS Commissioning guide for AHC-3000

14.7 Conﬁguring the heating

Here, you now select the after heating coil from among these possibilities:

• No after heating coil

• Water heating coil*

• Electro heating coil *= factory setting

The AHU must be in operational mode “Service stop”_

from main screen menu, in order to activate the new updatedsoftware.

Note! When “Water heating” is selected, the digital output for circulation pump and frost protection

of the heating battery is automatic selected. The default setting for frost protection is through the

temperature sensor on the return water. The return water sensor can be deselected under the menu “Temperature”. Frost protection settings are made on the “Commissioning” menu. Frost protection is also available through a capillary tube alarm (frost thermostat). To set frost

protection using a frost thermostat, select this under “Digital inputs”.

Warning:

If the frost protection sensor is deselected and no capillary tube alarm (frost thermostat) is

conﬁgured, there is a risk of damaging the water heating battery.

Note

INSTRUCTIONS Commissioning guide for AHC-3000

14.8 Conﬁguring the cooling

Here you now select the after cooling coil from among these possibilities:

• No after cooling*

• Water heating coil *= factory setting

The AHU must be in the operational mode “Service stop”_

from main screen menu in order to activate the new updatedsoftware.

Note! When “Water cooling” is selected, the digital output for circulation pump is automatically

selected.

Warning:

Frost protection must use antifreeze liquid in the water cooling battery.

Note

INSTRUCTIONS Commissioning guide for AHC-3000

14.9 Conﬁguring the supply air: single-duct supply air system

Supply air AHU

If the AHU is a single fan/single duct supply air unit, it is possible to conﬁgure a recirculation unit using a mixing damper.

Here, you now select the mixing damper.

INSTRUCTIONS Commissioning guide for AHC-3000

15. Autoconﬁguring the AHU ﬁeld components

This shows the autoconﬁgured Air Handling Unit ﬁeld options

• Duct pressure

• Filter pressure

• Room temperature

• Timer button

• Remote setpoint

• CO2 control

• VOC control

• Humidity

All ﬁeld options, functions and components are auto selected when detected by a sensor. This means that as soon as a pressure transmitter, VOC sensor, humidity sensor or HMI-20T room

display has been detected on the Modbus, the sensor and the including function will be activated.

Example 1: An HMI-20T is connected to the Modbus port via the RJ12 port marked “A”. As soon as the HMI-20T is detected on the Modbus, the functions:

√ Room temperature √ Timer button √ Remote set-point

- will automatically be selected

Example 2:

An VTH-6202 VOC sensor is connected to the Modbus port via the RJ12 port marked “B”. As soon as the VTH-6202 is detected on the Modbus, the functions:

• VOC control

- will automatically be selected

INSTRUCTIONS Commissioning guide for AHC-3000

16. Auto conﬁguration

Auto conﬁguration is a function in the AHC-3000 system that helps the commissioning technician

conﬁgure the application.

The “Auto conﬁguration” function scans the system and automatically detect all Modbus

components in the AHU connected to ports “A”, “B1” & “B2”.

Note! Autoconﬁguration cannot be used with the AHC-3000-S.

When the “Autoconﬁguration” button is activated, the

AHU will go into operational mode: “Service stop”. _

After 10 seconds, the scan of the Modbus will be

completed and the “Autoconﬁguration” button can be released again.

The AHU will remain in operational mode “Service stop" until a dierent operational mode is

selected.

After “Autoconﬁguration”, it is now time to select the AHU type (see index 14.2).

The “Auto conﬁgure” function will now start a system scan.

All components on the Modbus:

• OJ-DV and DRHX drives

• PTH pressure transmitters

• Extension modules

• Modbus sensor (temperature, VOC sensor, humidity sensors)

• User interfaces (HMI-20-T room panel)

During “Autoconﬁguration”, all the above types and models of Modbus components will be detected

and integrated into the SW, and the attached function will be activated.

Note

INSTRUCTIONS Commissioning guide for AHC-3000

17. Digital input conﬁguration

Conﬁguring the digital inputs is made here. Digital inputs can be used for pre-deﬁned functions according to the application.

Note! The AHC-3000 has 7

available digital inputs.

Numbers 1 to 7. Each number can only be used once.

The last selection will overrule previous selections.

alarm”. Alarm = Closed Din.

Extract ﬁlter alarm

• Filter alarm using a ﬁlter switch across the extract ﬁlter. The alarm will appear as “Extract air ﬁlter

alarm”. Alarm=Closed Din.

External ﬁre alarm

• Fire thermostat. The alarm will stop the AHU and appear as “External ﬁre alarm”. Alarm = Open

Din.

Frost alarm

• Digital input for the frost thermostat at the water heating coil. Alarm = Open Din. Electric heater alarm

• Overheating thermostat on the electrical heating coil. Alarm = Open Din. Pump alarm

• Alarm signal from the circulation pump

• Alarm = Closed Din. Summer/winter

• External signal for hot or cold water available for the combi battery (external heat pump)

• (Winter = Closed Din = Hot water available, Summer = Open Din = Cold water available) Start

• External start signal. AHU will start when the digital input is closed. Boost speed

• External boost signal. Activation will start the AHU in boost speed (high speed)

• AHU will boost as long as the digital input is closed. Smoke (stop)

• Signal from a smoke detector will stop the AHU. The alarm will stop the AHU and appear as

“Smoke alarm”. Alarm = Open Din.

Fire

• This ﬁre alarm input will activate the ﬁre running conditions described under “Fire settings” (see

index 8 of this manual). Alarm = Open Din.

The digital inputs can be used for:

Supply fan alarm

• Fan alarms can be conﬁgured as “Tacho” or a digital

alarm signal. See index no. 14.6.

• If “Tacho” is selected, an alarm will be triggered if

the tacho signal stops during fan operation.

• If “Digital input” is selected, an alarm will be

triggered if the digital input is closed.

Extract fan alarm – see the description above Filter alarm – (common alarm)

• Filter alarm can be conﬁgured as a common digital

signal for ﬁlter switches across the outdoor air ﬁlter and the extract air ﬁlter. The alarm will appear as “Filter alarm”. Alarm = Closed Din.

Outdoor ﬁlter alarm

• Filter alarm using ﬁlter switch across the outdoor

ﬁlter. The alarm will appear as “Outdoor air-ﬁlter

INSTRUCTIONS Commissioning guide for AHC-3000

18. Commissioning

From this window, it is possible to commission and test the ﬁeld components:

• Read out and override the status values of: o Supply air fan – Override not possible in operational mode “Stop”

Extract air fan – Override not possible in operational mode “Stop”

Heat recovery

Heating coil

Cooling coil

Sensor current value and sensor correction

18.1 Commissioning the fans

Fans status:

Settings: Override On/O

Status: Current speed Current fan pressure Status start relay

Fans override:

Activate the “Override function”.

The timer is started and the running time is 8

hours. De-activate the “Override function” to stop and

reset the timer.

Settings: Set the current speed

Status: Status of current fan pressure Status start relay

INSTRUCTIONS Commissioning guide for AHC-3000

18.2 Commissioning the heat recovery

Heat recovery status/readouts:

Settings: Override On/O

Status: Current heat recovery Current 0–10V output heat recovery Current supply air temperature

Heat recovery override:

Activate the “Override function” by pushing the switch to the right. Timer is started and the running time is 8 hours. De-activate the “Override function” by pushing the switch to the

left to stop and reset the timer.

Settings: Current recovery % open

Status: Current 0-10V heating output Current supply air temp. (°C/°F)

INSTRUCTIONS Commissioning guide for AHC-3000

18.3 Commissioning the heater

Heat recovery status/readouts:

Settings: Override On/O

Status: Current heating % Current 0-10V output, heating coil Current status of the heating relay Current supply air temp. (°C/°F)

Heater override:

Activate the “Override function” by pushing the switch to the right. This starts the timer and the running time is 8 hours. De-activate the “Override function” by pushing the switch to the

left to stop and reset the timer.

Settings: Current heating % open

Status: Current 0-10V heating output Current status of the heating relay Current supply air temp. (°C/°F)

INSTRUCTIONS Commissioning guide for AHC-3000

18.4 Commissioning the cooler

Cooler status/readouts:

Settings: Override On/O

Status: Current cooling % Current 0-10V output cooling coil Current supply air temp. (°C/°F)

Cooler override:

Activate the “Override function” by pushing the switch to the right. This starts the timer and the running time is 8 hours. De-activate the “Override function” by pushing the switch to the

left to stop and reset the timer.

Settings: Set cooling % override

Status: Current 0-10V cooling output Status of cooling relays 1, 2 & 3 Current supply air temperature

INSTRUCTIONS Commissioning guide for AHC-3000

18.5 Commissioning the temperature sensors

Temperature sensors

• Read out all connected temperature sensors.

• Set the sensor correction (-3.5°C to +3.5°C)

Sensor correction is an option for adjusting the temperature displayed

on the sensor in the AHC-3000 system so that it will show the same

value as the temperature measured by an external thermometer.

Scroll “Down” for more temperature sensors.

INSTRUCTIONS Commissioning guide for AHC-3000

18.6 Commissioning the CO2 sensors

CO2 sensors

• Read out the current value on the connected CO2 sensor.

• Current input on the 0-10V analogue input

18.7 Commissioning the humidity sensors

Extract-air humidity sensor

• Read out the current value on the connected humidity sensor (HTH-6202 Modbus sensor)

o Current extract-air humidity

INSTRUCTIONS Commissioning guide for AHC-3000

19. Control settings

19.1 Fan control mode: Constant pressure

• Select the fan control mode: Constant pressure

– the procedure is the same for the supply and exhaust air fans.

√ Low speed (Pressure setpoint) √ Medium speed (Pressure setpoint) √ High speed (Pressure setpoint) √ Airﬂow (current value) √ Min. air volume (min. ﬂow setpoint) √ Max. air volume (max. ﬂow setpoint) √ Fan pressure (current value) √ Supply air duct (current value) √ Energy consumption (current value, only OJ-DV) √ K-factor (l/s) √ Delayed start (time setpoint)

Setpoints can be changed by touching the blue setpoint values and

changing the value via the setpoint keyboard. Save & exit with “OK”

INSTRUCTIONS Commissioning guide for AHC-3000

19.2 Fan control mode: Constant air ﬂow

• Select the fan control mode: Constant air ﬂow

– the procedure is the same for the supply and exhaust air fans.

• Set the control parameters for the

selected control mode

√ Low speed (flow setpoint) √ Medium speed (flow setpoint) √ High speed (flow setpoint) √ Airflow (flow current value) √ Fan pressure (current value) √ Supply air duct (current value) √ Energy consumption (current value, only OJ-DV) √ K-factor (l/s) √ Delayed start (setpoint)

Setpoints can be changed by touching the blue setpoint values and

changing the value via the setpoint keyboard. Save & exit with “OK”

INSTRUCTIONS Commissioning guide for AHC-3000

19.3 Fan control mode: Extract air slave

Extract slave requires measuring the ﬂow of both the supply and exhaust air. It is not possible to select the supply air slave and exhaust air slave together. Select the fan control mode: Extract air slave – the procedure is the same for the supply and extract air fans.

√ Offset extract air (+/-% according to the supply air fan) √ Fan speed (current fan speed) √ Fan pressure (current fan pressure, only displayed if the pressure is measured) √ Airflow (current fan pressure, only displayed if the pressure is measured) √ Exhaust air duct (current duct pressure, only displayed if the pressure is measured) √ K-factor (l/s) √ Min. air volume (min. flow setpoint, only displayed if the pressure is measured)) √ Max. air volume (min. flow setpoint, only displayed if the pressure is measured)) √ Energy consumption (current value, only OJ-DV) √ Delayed start (time setpoint)

Setpoints can be changed by touching the blue setpoint values and

changing values via the setpoint keyboard. Save & exit with “OK”

INSTRUCTIONS Commissioning guide for AHC-3000

19.4 Fan control mode: Supply air slave

Supply air slave requires measuring the ﬂow of both the supply and exhaust air. It is not possible to select supply air slave and exhaust air slave together.

• Select the fan control mode: Extract air slave – the procedure is the same for supply and extract air fans.

√ Offset extract air (+/-% according to the supply air fan) √ Fan speed (current fan speed) √ Fan pressure (current fan pressure, only displayed if the pressure is measured) √ Airflow (current fan pressure, only displayed if the pressure is measured) √ Exhaust air duct (current duct pressure, only displayed if the pressure is measured) √ K-factor (l/s) √ Min. air volume (min.- flow setpoint, only displayed if the pressure is measured)) √ Max. air volume (min. flow setpoint, only displayed if the pressure is measured)) √ Energy consumption (current value, only OJ-DV) √ Delayed start (time setpoint)

Setpoints can be changed by touching the blue setpoint values and

changing values via the setpoint keyboard. Save & exit with “OK”

INSTRUCTIONS Commissioning guide for AHC-3000

19.5 Fan control mode: Constant motor speed %

• Select the fan control mode: Constant motor speed

- procedure is the same for supply and extract air fan.

- in this sample, only supply air fan is shown.

√ Low speed (setpoint) √ Medium speed (setpoint) √ High speed (setpoint) √ Airflow (current value) √ Fan pressure (current value) √ Supply air duct (current value) √ Energy consumption (current value, only OJ-DV) √ K-factor (l/s) √ Delayed start (setpoint)

Setpoints can be changed by touching the blue setpoint values and

changing the values via the setpoint keyboard. Save & exit with “OK”

INSTRUCTIONS Commissioning guide for AHC-3000

19.6 Air-control loop settings

• If the airﬂow oscillates, it may be necessary to change the parameter settings in the fan-speed

control loop.

• The available parameters are the P-band and the I-time.

• If the airﬂow/pressure oscillates, it helps to increase the P-band and the I-time

• Normally these parameters are OK from the factory.

19.7 Boost setpoint

• If “Boost start” is activated via the digital input, the HMI-35T hand terminal or the HMI-20T room

panel display, the AHU will go into “Boost speed”.

• On this menu, you select the speed that the AHU will take in boost mode.

• The boost mode is active until the timer in the HMI-35T hand-held terminal or the HMI-20T room

panel display runs out of time – or the digital input (DI6) for high speed, is opened.

• Supply air √ Select the volume or the speed on the supply air fan √ The setpoint is at% of the max. air volume √ If there is no volume measurement, the setpoint is a % of the max. fan speed

• Extract air √ Select the volume or the speed on the exhaust air fan √ The setpoint is a % of the max. air volume √ If there is no volume measurement, the setpoint is a % of the max. fan speed

INSTRUCTIONS Commissioning guide for AHC-3000

19.8 Zero-calibrating the pressure transmitters

To eliminate the deviation of zero

point measurement when the pressure

transmitters are without pressure, it is

possible here to start the procedure for

the 0-calibration of all the system pressure

transmitters.

All installed modbus pressure transmitters in

the conﬁguration will be zero calibrated.

Zero calibration will be made automatic at

each stop or manually via the“0-CALIBRATE

PRESSURE” button.

Auto 0-calibration The 0-calibration will be made every time the AHU is in “Stop”. Either the stop signal is made

manually from the user interface (HMI-35-T) or the AHU is stopped via a signal from the time

scheduler. When the AHU is stopped and the pressure transmitters do not measure any turbulence in

the pressure tubes, the 0-calibration will start.

Manual 0-calibration Press “0-CALIBRATE PRESSURE” to start the 0-calibration.

During manual 0-calibration, the AHU will stop if it is running.

When the 0-calibration has ﬁnished, the AHU will start again according to the operation conditions, scheduler, override function, boost mode or similar.

Note

INSTRUCTIONS Commissioning guide for AHC-3000

20. Temperature control settings

The temperature control mode is selected here:

• Constant supply air o Temperature is controlled in relation to the constant supply-air temperature measured by the

supply air sensor located in the supply air duct.

o The required supply air temperature setpoint is set from the HMI main screen display.

• Constant extract air o Temperature is controlled in relation to constant extract air temperature measured by the extract

air sensor located in the extract air duct.

o The required extract air temperature setpoint is set from the HMI main screen display.

• Constant room o Temperature is controlled in relation to constant room-air temperature measured by the room

sensor located in the room.

o The required room temperature setpoint is set from the HMI-20T room panel or the HMI main

screen display.

INSTRUCTIONS Commissioning guide for AHC-3000

20.1 Temperature control loop settings

• If the control of the supply air oscillates, it may be necessary to

change the parameter settings in the temperature control loop.

• The available parameters are the P-band and I-time.

• Normal these parameters are OK from the factory.

• If a control sequence such as “Constant supply” or “Constant supply/

extract di.” is selected, the P-band and I-time in the “Supply” section will be active and may be changed if the temperature oscillates more than is acceptable.

• If a control sequence such as “Constant extract” or “Constant room is

selected, the P-band and I-time in the “Extract” section are active and may be changed if the temperature oscillates more than is acceptable.

Flow down function

• If the temperature cannot be reached even though the heat exchanger

AND the heating are 100% open, the air ﬂow will be reduced to 50% of the air ﬂow setpoint

Basics on the temperature control sequence:

Fault on the sensor = Output will take half of the fault on the P-band as a ”here-and-now-reaction”.

The velocity of the second half of the P-band will be cut in or cut out using the I-time. The calculation

and recalculation of the fault are on-going calculations.

If the temperature oscillates more than is

acceptable, the ﬁrst thing to change is the

P-band and/or the I-time.

A higher P-band and I-time will give a slower

reaction on the output, and a slower reaction

on the output will increase the stability of the

temperature control. Not all oscillations can be resolved by changing

the P-band and I-time.

For instance, in a water-based heating system, the dierential pressure over the valve is important.

P-band and I-time cannot save the world??.

If the dierential pressure over the valve is very high (more than 0.1 bar or 1.0 mH2O) it may not be

possible to create a stable temperature control only adjusting the P-band and/or the I-time. If dierential pressure over the valve is higher than mentioned AND it is not possible to a stable

temperature control via adjusting the P-band and I-time, you must lower the dierential pressure over

the valve.

INSTRUCTIONS Commissioning guide for AHC-3000

20.2 Heating coil settings (water coil)

Available settings

Setpoint √ Current setpoint for the current temperature control mode √ Setting range is 5.0–40.0°C

Current √ Current supply air temperature

Flow supply √ Current supply air ﬂow (m3/h)

Heating √ Current status value of the heating output (range 0–100%)

Heating relay 1, 2 & 3 √ Current status of the relay output

Start-up heating √ During the start-up sequence of the AHU, the heating valve will override the set value. The

override of the heating valve stops when the start-up sequence is completed and the inlet fan has reached its air volume setpoint.

Frost protection √ During normal operation of the AHU, the return sensor on the heating coil will ensure that the

return ﬂow from the water coil does not fall below the set value in this parameter.

Standby heating √ When the AHU is in stop/standby mode, the return sensor on the heating coil will ensure that

the return ﬂow from the water coil does not fall below the set value in this parameter.

Frost alarm √ Setpoint for frost alarm. At temperatures below the setpoint, the AHU will stop, the pump will

start, the heating valve will be overridden to 100% open and an “A” alarm will be triggered.

Water temperature √ Current temperature on the return pipe sensor.

INSTRUCTIONS Commissioning guide for AHC-3000

20.3 Heating coil settings (Electric coil 1)

Available settings

Setpoint √ Current setpoint for the current temperature control mode √ Setting range: 5.0–40.0°C

Current √ Current supply air temperature

Flow supply √ Current supply air ﬂow (m3/h)

Heating √ Current status value on the heating output (range 0–100%)

Reduced heating √ Current status on the reduced heating function. √ “YES”: If the heating has been reduced because the supply air ﬂow is lower than the set value √ “NO”: If the heating is not reduced

0% heat power √ Fan-speed setpoint (% of the max. AHU volume) for supply air, the heating must be o (0%). √ If the air ﬂow is below the value of this setpoint, the heat power is forced “O”

100% heat power √ Setpoint for the minimum fan speed (% of the max. AHU volume) of the supply air, the heating

is allowed to be 100% on.

√ If the air ﬂow is below the value of this setpoint, the heat power is reduced.

INSTRUCTIONS Commissioning guide for AHC-3000

20.4 Cooling coil settings (water cooling coil)

Available settings

Setpoint √ Current setpoint for the current temperature control mode √ Setting range: 0.0–40.0°C

Current √ Current supply-air temperature

Cooling √ Current status value of the cooling valve (range 0–100%)

Supply air ﬂow √ Current supply-air ﬂow (m3/h)

Cooling relay √ Current status of the cooling relay (Open/Closed)

INSTRUCTIONS Commissioning guide for AHC-3000

20.5 Cross-ﬂow heat-exchanger settings

Available settings

Analogue output √ Current status value on the bypass-damper analogue output

Heat recovery √ Current heat recovery output

Ice protection √ Current setpoint for the ice protection √ At temperatures below the set value + P-band, the bypass damper will override modulating to

100% open. As a result, the outdoor air bypasses the heat exchanger and exhaust air from the room, and passes through the heat exchanger. Due to the relatively high room temperature, this function will lead to thawing of the ice coating on the heat exchanger.

Ice protection, P-band √ At temperatures below the set value + set value in the parameter, "Ice protection” will override

the bypass damper modulating to 100% open.

Ice protection, I-time √ I-time for the ice protection

INSTRUCTIONS Commissioning guide for AHC-3000

20.6 Counter-ﬂow heat-exchanger settings

Available settings

Analogue output √ Current status value on the by-pass damper analogue output

Heat recovery √ Current heat recovery output

Ice protection √ Current setpoint for the ice protection √ At temperatures below the set value + P-band, the bypass damper will override modulating to

Ice protection, P-band √ At temperatures below the set value + set value in the parameter, "Ice protection” will override

the bypass damper modulating to 100% open.

Ice protection, I-time √ I-time for the ice protection

INSTRUCTIONS Commissioning guide for AHC-3000

20.7 Rotary heat exchanger settings

Available settings

Heat recovery √ Current heat recovery setpoint

Motor revolution √ Current motor speed (rpm) (only DRHX)

Motor current √ Current motor current (mA) (only DRHX)

Operating time √ Current operating time (Days) (only DRHX)

INSTRUCTIONS Commissioning guide for AHC-3000

20.8 Summer night cooling (free cooling)

Summer night cooling (free cooling)

Available settings

Select √ Select summer night cooling “On/O”

Start √ Summer night cooling starts at a higher room temperature. √ If no room sensor is installed, the system will start at the start time set under "Start time” in

order to measure the current room temperature.

√ The outdoor temperature must be >2°C lower than the measured room/extract temperature.

Stop √ Summer night cooling stops at lower room temperature/extract temperature.

Outdoor stop √ Summer night cooling stops (don't start) at a lower outdoor temperature.

Min. supply √ Minimum supply temperature when summer night cooling is active. √ The heat exchanger is used to ensure a minimum supply temperature

Start time √ Earliest time when summer night cooling starts. Setting range: 8 pm – 2 am √ If the system is not conﬁgured with a room sensor but only with an extract sensor, it will start at

the set time in order to check room temperature via the extract sensor.

√ If the system is conﬁgured with a room sensor, it will continually check the room temperature

and begin operating at the set start time.

Stop time √ Time at which summer night cooling stops. Setting range: 3 am – 8 am

Setpoint supply air fan √ Enter the setpoint for supply air fan during summer night cooling.

Setpoint exhaust air fan √ Enter the setpoint for exhaust air fan during summer night cooling.

INSTRUCTIONS Commissioning guide for AHC-3000

21. Operation time schedule

21.1 Operation modes

The AHU can have dierent operating modes:

√ Stop o The system is stopped outside the conﬁgured operation periods. The frost protection of heating

coils remains active and the pump and valve motioning also remains active. √ Low: the system will run at low speed outside the conﬁgured operating periods. √ Medium: the system will run at medium speed outside the conﬁgured operating periods. √ High: the system will run at high speed outside the conﬁgured operating periods. √ Extended stop: the system will be stopped outside the conﬁgured operating periods.

However: o The system is stopped outside the conﬁgured operating periods. Frost protection of heating

coils remains active and the pump and valve motioning also remain active. o Summer night cooling will be active and the function will start the system if the preconditions for

doing so are fulﬁlled. o The system can be started manually via the start signal: ”High speed” (boost speed).

The properties should be conﬁgured ﬁrst (see the next page for how to do this). Under properties, set the active period for daily schedule and the AHU operating mode when the

schedule shows a no-operating mode. Operation mode means that the system assumes that the calendar programme is outside the conﬁgured operating periods such as the daily schedule and the exceptions, holiday periods, etc., that have also been set up.

We call this period “fall-back speed” = the speed of the fans when the AHU is outside all other

operating modes.

INSTRUCTIONS Commissioning guide for AHC-3000

21.2 Setting the active schedule period and fall-back speed

(*1): Set the period during which the calendar programme will be active.

Here, we have selected ”Setting the schedule period” = 1 January 2017….31 December 2019

Outside this period, the AHU will run according to the selected “fall-back speed”

(*2): Outside this period, the selected operating

mode as conﬁgured under “Fan speed” will be active.

Here, we have selected “Fan speed Operation mode” = Extended stop (see previous page).

• Outside the selected active period for daily schedule and when no timer scheduler is active, the

AHU will go into this operating mode.

Select start date

Select stop date

(*1)

Select fan speed

(*2)

INSTRUCTIONS Commissioning guide for AHC-3000

21.3 Setting standard daily operation pattern

For setting the operating pattern that will be in eect as the standard operating pattern during those

periods in which the system is to run in normal operation.

Select “Daily schedule” and in the dialogue box “Daily Schedule” choose “Monday” to set the

operating pattern for Mondays and select “Add event”.

Now: For each individual time for changing the operating mode, select the operating mode that the

AHU will take at this selected time.

In our example, the switching time at which the system will change its status on Mondays.

• Start at medium speed at 6.00 am

• Change to high speed at 12.00 noon

• Change to extended stop at 4.00 pm (fall-back speed as selected on previous page)

Start making the ﬁrst Event

The ﬁrst event on Monday is to start the AHU in the morning at medium speed at 6.00 am.

(*1): Select “+ Add event”

(*2): Set time (h + m) for the event

(*3): Select the fan speed of the event

(*4): If you want to delete this current event: Press “Delete”

Repeat the steps for all the next events on Monday

(*1)

(*2)

(*3)

(*4)

INSTRUCTIONS Commissioning guide for AHC-3000

21.4 Copy a daily schedule to one or more days

If the operating patterns are identical for Monday through Friday, then use the “Copy” function.

Monday to selectable days for the entire week

√ The operation schedule that has now been speciﬁed as the operating pattern for Monday will be

copied to selected days.

Note

Copying functionality..!

If there are individual days that are not going to have the same operating pattern, even though you have used the copying functionality, these days can subsequently be individually changed.

(*1): Select “Daily schedule”.

(*2): Select the daily schedule (day) that will be used as “copy from”. Check that the events are correctly scheduled.

(*3): Press the menu “Copy daily schedule to”.

(*4): Select the weekdays with a check mark , that must use the same schedule as Monday.

Save by pressing “Back” .

(*1) (*2) (*3) (*4)

INSTRUCTIONS Commissioning guide for AHC-3000

21.5 Scheduled operation exceptions

Setting exceptions

You may now conﬁgure the exceptions from the normal operating pattern. It is possible to make three dierent exception rules and each exception rule can be used in up to 10

dierent periods.

This exception function may be used to make periods where the AHU must operate dierently from

the daily programmed schedule.

In the following example we will describe how to create an exception which is active when you want

to stop the AHU during national holidays and other extraordinary closing days. Days that are an exception from the normal operation schedule. Days the building is closed and empty.

During these closing days, the AHU will “keep an eye” on the room or building and start up if

necessary, e.g. if the room temperature exceeds the summer night cooling setpoint.

(*1): Select “Exceptions”.

(*2): Select “Exception 1”.

(*3): Press “+ Add event” to create the ﬁrst event. In this exception we will create a stop event so we will only need one event. In this case the stop event is selected as “fall-back speed” The fall-back speed is set under ”Properties” (index 21.2 in this guide)

(*4): If more events are needed, it is possible to create more events – repeat: (*3)

On the next page, we will select the period that this exception will be active.

(*1) (*2) (*3) (*4)

INSTRUCTIONS Commissioning guide for AHC-3000

On the previous page we set the pattern for Exception 1.

On this page, we select the days on which this Exception 1 must be activated.

We will now make a number of time schedules when the Exception 1 must be active:

Example:

1. 5 June is a public holiday, a national closing day – day programming

2. 1 week of holiday in week 7 – week programming

3. 2 weeks of holiday from 16 July to 29 July – period programming

Activate “Exception 1” on a single active day

1. Select “+ Add” (*4 ) and select the date ............................

Leave and save by pressing on .

The programmed activity is now visible on the overview ...............

It is possible to make more single-day periods:

Select “+ Add” (*4 ) and select more days of activation.

(*1) (*2) (*3) (*4)

INSTRUCTIONS Commissioning guide for AHC-3000

Activate “Exception 1” on a single active week.

2. Select “+ Add” (*4 ) and select the week ..........................

Week 7/2018 starts on the second Monday in February.

Leave and save by pressing “Back” .

The programmed activity, is now visible on the overview................

It is possible to make more single week periods:

Select “+ Add” (*4 ) and select more days of activation.

Activate “Exception 1” in a free selectable period.

1. Select “+ Add” (*4 ) and select the week ..........................

2 weeks of holiday starts on 16 July and ends on 29 July. 2018

Leave and save by pressing on .

The programmed activity is now visible on the overview . . . . . . . . . . . . . . . .

It is possible to make more freely selectable periods:

Select “+ Add” (*4 ) and select more days of activation.

OJ Electronics A/S

Stenager 13B • DK-6400 Sønderborg

Tel. : +45 73 12 13 14 • Fax +45 73 12 13 13

oj@ojelectronics.com • www.ojelectronics.com

INSTRUCTIONS Commissioning guide for AHC-3000

OJ Electronics AHC-3000 Instructions Manual

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