Sinclair SCV-1400EB, Руководство по обслуживанию

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7 Special Control
7.1 Outdoor Unit Duty Cycling
In systems with multiple outdoor units, outdoor unit duty cycling is used to balance the compressor running time. Outdoor unit
duty cycling occurs whenever all the outdoor units stop running (either because the leaving water set temperature has been
reached or because a master unit error has occurred):
Take 16 units in parallel as an example:
 First cycle:
When the outdoor units are powered on for the first time, if there is a load requirement, 50% of the units turn on starting
with the 0# master unit to higher address slave units. As the leaving water temperature approaches its set temperature, units
shut down in succession, starting with the unit with the highest address.
¡ - ¡ -
1 2 8 9 16
Startup Startup Startup
Startup
¡ - ¡ -
Running Running Running
Loading
¡ - ¡ -
Offloading
Loading in sequence (from 9 to 16)
Offloading in sequence (from 16 to 1)
1 2 8 9 16
1 2 8 9 16

Second cycle:
The next time a load requirement exists (or following a master unit error), the units turn on starting with the highest
address unit to lower address units. As the leaving water temperature approaches its set temperature, units shut down in
succession, starting with the unit with the lowest address.
¡ - ¡ -
16 15 9 8 1
Startup Startup Startup
Startup
¡ - ¡ -
Running Running Running
Loading
¡ - ¡ -
Offloading
Loading in sequence (from 8 to 1)
Offloading in sequence (from 1 to 16)
16 15 9 8 1
16 15 9 8 1

Subsequent cycles will repeat the actions of the first and second cycles
Notes:
1. The address settings on the outdoor unit main PCBs for master unit and slave unit do not change.