Daikin VRV - Page 52

52
ZONE A
ZONE B
ZONE C
ITM
VRV
HP
WEIGHT
1
3
1
Weighted
Demand Size
Original
Demand Size
Averaging Sensors:
Historically, a popular method is to elect all units to act as joint ‘master’
units. Automatic mode change occurs when the majority of units
demand it.
Voting System:
The most flexible auto change over is the voting system. Changeover
operates by continually calculating the demand load of each room by
measuring the temperature differential of the set point against the room
temperature. Modes are regularly changed accordingly.
This method can be tailored on each application by ‘weighting’ the
demand of a room based on it’s importance. Note that this method can
be used for units grouped together on a single port of a heat recovery
system.
Note: Both "Group" changeover methods require a Daikin i-Touch Manager to operate.
GROUP
In Summary:
With ALL changeover options, when a system mode is changed,
the indoor units on the system are not forced into heating or
cooling. If there is no demand in the room for the mode that has
been selected, the unit(s) will run in fan only mode.
Heat Pump Changeover