Page 16
8
Change Compressor Staging Limits?
Default = 1.0°C
Each of the Viking’s primary 3 compressors outp
uts have their own settings to control how each
compressor performs as part of the overall system. The 4
th
compressor if enabled, uses the same
setting set for the 3
rd
compressor.
You can set in 0.5 degree increments how far away “this” compressor will st
art from the
previous compressor’s start point.
Options
Off to 5°C
–
When selecting OFF for any compressor, it and subsequent compressors are also
turned to off.
Note: Compressor 1 cannot be turned OFF.
If enabled, compressor 4 uses all compressor 3 settings.
9
Change Compressor Control Options?
Default = Various
This menu item permits you to fine tune the Viking’s compressor control settings.
Options
Lead / Lag
–
Default = OFF. This option attempts to even the wear on air conditioning systems
with multiple compressors. When all compressors are off (either due to the room temperature
being in the dead band or via time clock etc turning the system off) the compressor numbers
will rotate 1 value so that next time the system starts, compressor 2 will start first etc.
Important
–
The Lead Lag Function will use all compressors under
Viking control as indicated in the Compressor Control Options menu
as
described above, so it’s vital that the number of fitted compressors
is correct.
See more details on the Viking Lead Lag Function on page 30.
Smart Upstaging
–
Default 5 mins. The Viking does not simply measure the difference between
the room temperature and set temperature to bring on various stages of heating or cooling.
The Viking will give a running compressor a chance to bring the room to temperature on its own
before starting additional compressors in an attempt to reduce energy consumption. The
“Smart Staging” settings will determine the
minimum time the Viking will wait before bringing
on additional compressors.
Timed Upstage
–
Default 30 mins. This setting will bring on additional compressors regardless
of how close the room temperature and set temperature are to prevent a struggling compressor
attempting to bring a room to set temperature on its own.
10
Change Compressor Timing Options?
Default = 3 Mins & OFF
An adjustable compressor anti cycle and minimum run timer has been provided to improve
compressor protection.
The anti-cycle timer will prevent the compressor from restarting too soon after it has shut down
and when the Viking first powers up (soft starting).
The minimum run timer will keep the compressor running for a minimum period of time, again
to prevent short cycling but more so to reduce long term energy consumption of the system.
Options
Anti-Cycle Delay
–
Adjust this from Off to 3, 4 or 5 mins (Default = 3 Minutes)
Minimum Run Time
–
Adjust this from Off to 2, 3, 4 or 6 mins (Default = OFF)
