CIAT AQUACIATPOWER ILD-HE Series, Инструкция по эксплуатации

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8 - STANDARD CONTROL OPERATIONS AND OPTIONS
8.11 Setting holidays
The control allows the user to define 16 holiday periods. Each
holiday period is defined by three parameters, i.e. the month,
the start day, and the duration of the holiday period.
During the holiday period, depending on periods defined as
holidays, the controller will be either in occupied or unoccupied
mode. Holiday periods can be modified by logged-in users only.
To modify holiday periods
1. Navigate to the Configuration menu (logged-in users only).
2. Select
Holiday Menu
(HOLIDAY).
3. Choose the holiday period, e.g. HOLDY_01.
4. Set Holiday Start Month [HOL_MON], Start Day [HOL_
DAY], Duration (days) [HOL_LEN].
Holiday Start Month [HOL_MON]
0-12 0
Start Day [HOL_DAY]
0-31 0
Duration (days) [HOL_LEN]
0-99 0
8.12 Dry cooler – free cooling option
AQUACIAT POWER LD chillers and AQUACIAT POWER ILD heat
pumps may be fitted with a dry cooler that enables power
consumption reduction which amounts to energy and cost
savings.
The installation of a dry cooler allows for "free cooling" – a
method of using low outdoor air temperature as an aid to chilling
water that is later used in the air-conditioning system. The
system is the most effective when the outdoor air temperature
is below 0°C (32°F).
This “dry cooler free cooling” mode is enabled when the outside
air temperature ("OAT Free Cooling") is below the water loop
temperature and the service-configured threshold parameter.
NOTE: Dry cooler water loop temperature and free cooling
OAT measured by the control are read-only values that can
be verified in the DC Free Cooling Status menu (DCFC_STA).
The control distinguishes between two types of fan control for
a dry cooler free cooling option, where the first one embraces
the use of fan staging and the second one that includes the use
of variable speed fan. Mixed configuration can also be used
(fixed and variable-speed fan control at the same time).
Dry cooler free cooling is normally stopped when the outside
air temperature ("OAT Free Cooling") is above the water loop
temperature and the service-configured threshold parameter.
However, if it turns out that the cooling power of the dry cooler
is not enough in order to reach the cooling setpoint, then the
mechanical cooling will be started (when FC capacity is at 100%,
then mechanical cooling can be started).
8.13 Energy Management Module
The CONNECT TOUCH control may be interconnected with the
Energy Management Module (EMM) used to control the level
of energy consumption, providing users with information such
as the current unit status, compressors operating status, etc.
8.14 Heat recovery option (desuperheater)
Heat recovery is a method of using energy that would normally
leave the system in the form of the waste heat released into
the air.
Thanks to the concept of heat recovery, AQUACIAT POWER ILD
heat pumps can produce hot water using the recycled heat.
Such a solution does not only allow for decreasing the energy
consumption expenses but it also proves to be environmentally
friendly. By recovering heat from the cooling cycle, the CONNECT
TOUCH control system can maximise the unit efficiency and
provide a large amount of hot water to the building system.
AQUACIAT
POWER
LD chillers and AQUACIAT
POWER
ILD heat
pumps may be fitted with a desuperheater that allows for
better energy management by providing partial heat reclaim
functionality.
Desuperheater (heat exchanger) is mounted between the
compressor and air-cooled condenser. The desuperheater is
used to extract the high pressure, high temperature heat from
the refrigerant to "desuperheat" it to a lower pressure refrigerant.
The heat that is obtained in this process can be used for
warming the water (up to 80°C). Please note that the vapour that
goes into the desuperheater is not fully condensed; therefore,
the refrigerant is channelled to a separate heat exchanger
("condenser") where the condensing process occurs.
To set the minimum desuperheat temperature
1. Navigate to the Main menu.
2. Select Setpoint Configuration (SETPOINT).
3. Set Desuperheat Min SCT [min_sct].
Desuperheat Min SCT [min_sct]
24 to 50°C 40°C
75 to 122°F 104°F
EN-45 AQUACIAT
POWER