Dvm Design Process - Samsung DVM PLUS III Technical Data Book

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DVM design process

5
5-1. DVM design process
DVM is a multi-system air conditioner that changes its performance by different conditions such as design temperature,
indoor and outdoor unit combination rates, heating operation rates, piping length, and level difference. It is important to select
the appropriate design condition to the load specification of each room.
Determine DVM design conditions
Select preliminary indoor unit
Select preliminary outdoor unit
(Max. combination ratio of indoor and
Does actual combination rates of indoor Does actual combination ratio of indoor
and outdoor units exceed 100%? and outdoor units exceed 100%?
Re-selection of
indoor units
Calculate actual capacity of
outdoor units (Using the
relevant outdoor unit's
capacity table 100~130%)
Calculate actual capacity of each
No
Actual capacity of each indoor unit >=
cooling and heating load for each zone
I-32
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for each zone
outdoor units: 130%)
Yes
Calculate actual capacity of
outdoor units (Using the
relevant outdoor unit's capacity
indoor unit
Yes
Draw design diagram
Select DVM control system
• Design temperature
• Calculate cooling and heating loads
• Power supply, piping length and level difference
• Consider design temperature conditions to select larger
indoor types than actual load.
• Determine outdoor units by the sum of the capacity of
preliminary selected indoor units: At this time, decide how
much combination ratio to permit.
No
• Calculate actual capacity of outdoor
units considering design temperature,
indoor and outdoor unit combination
ratio, piping length, level difference,
table 100%)
heating operation rates, etc.
• Calculate actual capacity of each indoor unit based
on the calculated outdoor capacity.
• If indoor units' actual capacity is lower than the load, reselect
ones with a larger capacity. Depending on designers' own
discretion.
• If there is no indoor unit with a larger capacity, add another
indoor unit.