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Operating Procedures
•
OFF by Switch. System is off by software switch. It can
be turned on / off either from Home Screen (button
marked 11 on figure 1), which all users have access to.
It can also be turned on / off from BAS (Building
Automation System).
9 - System Mode
Indicates heat pump thermal mode: Cooling or Heating.
10 - Module/Compressor Status
•
Modules Online/Avail/Setup. Number of modules online
and communicating / available for heat pump bank
temperature control and number of modules set up for
heat pump bank temperature control.
•
Comp Run/Avail. Number of compressors currently
running and number of compressors available for heat
pump bank temperature control.
•
Comp Demand. Cooling or Heating Demand value in
number of requested compressors as well as
continuous value in %. There is also a bar graph
representation of Cooling or Heating Demand beside
the % value.
11 - Power ON/OFF
Press and hold this button to toggle the software switch
which powers the heat pump (and all its modules) on and
off.
12 - Module Access
The module access buttons display the overview screen for
each module. These buttons provide access to all heat
pump modules screens individually. The number on the Mx
button stands for the module number in the heat pump.
Only modules that communicate directly with the
touchscreen interface are viewable via the module access
buttons.
Table 3. Module status conditions
Module is available and running
Refrigeration circuit 1 operational / circuit 2 non-
operational
26
13 - Date/Time
Current HMI date/time as set up in HMI system settings.
Modules Layout Screen
The heat pump can be composed of up to a maximum of
ten modules. Pressing the LAYOUT button displays the
screen showing the status of compressors and valves in
each module. See figure below.
This screen is a graphical representation of modules
available in the heat pump bank. See figure below.
Figure 14. Modules layout screen showing four
compressors on four modules
Module Layout Screen Status Conditions
Each module picture is a set of images that show real-time
color-coded state of compressor, refrigeration circuit,
isolation valves, fans and module.
Module is unavailable
Refrigeration circuit 2 in alarm
Module turned off by alarm and unavailable
Isolation Valves:
Valve LED is green = valve is open
Valve LED is gray = valve is closed
ARTC-SVX006A-EN
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