Hoval ServeCool User manual

System control for ServeCool
Operating Instructions
System control
for ServeCool
Operating Instructions
4 219 126-en-01

1 Use 3
1.1 Intended use .................................................................. 3
1.2 User groups ................................................................... 3
2 Basic principles 4
2.1 Operating modes ........................................................... 4
2.2 Setpoint sets.................................................................. 4
2.3 Operating and display elements on the control panel..... 5
2.4 Icons .............................................................................. 6
2.5 Buttons in the header..................................................... 6
3 Process diagram 7
3.1 Overview........................................................................ 8
3.2 Specications................................................................. 9
3.3 Fault messages.............................................................. 9
3.4 Process diagram.......................................................... 10
4 Data points 11
4.1 Night-time reduction..................................................... 12
4.2 Emergency operation................................................... 12
5 Zone control 13
5.1 Set points..................................................................... 14
5.2 Process diagram Zone................................................. 15
5.3 Data points Zone.......................................................... 16
6 Faults 17
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System control for ServeCool
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Content

1 Use
1.1 Intended use
The ServeCool system control is used for clearly laid-out operation of ServeCool
units. It is operated via the web application integrated in the controller with a
graphical user interface (Web GUI). Any web browser can be used for access via
the interface directly on the unit (recommended web browser: Google Chrome).
The system control gives trained users access to all information and settings that
are necessary for normal operation:
■Display and setting of operating modes
■Display of actual values (temperature, humidity, ow rate, ...)
■Display and setting of set values
■Display and programming of the annual calendar
■Display and handling of alarms and faults
■Display and setting of control parameters
■Password protection
Intended use also includes compliance with the operating instructions. Any usage
over and above this use is considered to be not as intended. The manufacturer
can accept no liability for damage resulting from improper use.
1.2 User groups
There are 4 user levels:
User level User group Access rights Access
Guest Untrained users ■Read rights
■Fault reset
free
LeveL 1 Trained users ■Read rights
■Write rights
– BMS set values
– Operating parameters
– Fault reset
– Control parameters
Protected by a password
Factory setting:
12345
LeveL 2 Trained users with
extended access
rights
■Read rights
■Write rights
– Calendar
– BMS set values
– Local set values
– Operating parameters
– Fault reset
– Control parameters
Protected by a password
(password handover at
commissioning of the plant)
LeveL 3 Super user ■Read rights
■Write rights
– Calendar
– BMS set values
– Local set values
– Operating parameters
– Fault reset
– Control parameters
Protected by a password
(password handover at
commissioning of the plant)
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System control for ServeCool Use
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2 Basic principles
2.1 Operating modes
The ServeCool unit has the following operating modes:
■Summer operation
■Winter operation
The system control controls and regulates the unit according to demand and
depending on the operating conditions. Switching between summer and winter
operation is carried out via the time program.
Operating
mode
Description Use
Summer
operation
The unit uses the following cooling processes depending on the
temperature and moisture conditions:
■Indirect free cooling with fresh air
■Indirect adiabatic cooling
■Mechanical aftercooling (for covering load peaks)
The chiller for supplying the cooling coil and the water supply are
in operation.
During the hot
season
Winter
operation
The unit uses the following cooling processes depending on the
temperature and moisture conditions:
■Indirect free cooling with fresh air
■Mechanical aftercooling (for covering load peaks)
The chiller for supplying the cooling coil is in operation. There is
no need for a water supply.
Attention
The adiabatic system must be drained and frost-proofed
during winter operation.
During the cold
season and
in transitional
periods
2.2 Setpoint sets
2 setpoint sets can be specied:
■Set values for local mode
■Setpoints for BMS operation
(The setpoints are specied by the building management system.)
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System control for ServeCool Basic principles
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2.3 Operating and display elements on the control panel
1
2
3
4
5
■
1
Operation indicator light
■
2
Indicator lamp and pushbutton Fault / Reset
■
3
Local / BMS selector switch
■
4
Network interface
■
5
Main switch
Operation indicator light
Green... ServeCool unit ON or in standby mode
O󰀨........ ServeCool unit OFF
Indicator lamp and pushbutton Fault / Reset
Red...... There is a fault message.
Press the button to acknowledge faults.
Local / BMS selector switch
■Local mode: The unit controller operates autonomously according to the
specications from the internal memory.
■BMS mode: The unit controller operates according to the specications from
the building management system.
Switching between local mode and BMS mode is done via the selector switch on
the control panel or via a software switch (software parameter 9000-08 in the Data
points screen). The following applies:
Setting
Control panel selector switch
Value
Software switch Valid
Local Local Local
Local BMS Local
BMS Local Local
BMS BMS BMS
Network interface
RJ45 interface for access to the unit controller
Main switch
The main switch disconnects the system from the power supply and, if necessary,
interrupts the optional UPS (uninterruptible power supply).
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System control for ServeCool Basic principles
4 219 126-en-01