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3. Product features
The controller described in this manual is a centralized controller that can be operated over the Web.
Any connected air conditioning systems can be operated or monitored directly from the controller or over the Web using
browser software.
Refer to the Web browser operation manual (separate volume) for how to use this functions.
Function
Description
Number of
controlled unit
Indoor unit, Ventilation unit
(LOSSNAY and OA handling unit),
DIDO controller, Air To Water
(PWFY), HWHP (CAHV)
Up to 150 units are connectable (including the interlocked units) *2
By connecting three PAC-YG50ECA Expansion controllers (sold separately), a maximum of 150
units of equipments can be controlled. Each DIDO controller (PAC-YG66DCA) contact counts as
one unit.*4
Number of units in one group
(indoor, independent OA
processing unit, or LOSSNAY,
HWHP (CAHV))
1-16 units (Indoor unit, independent OA processing unit, ventilation system (LOSSNAY), and DIDO
controller cannot be registered to the same group.) *6
Number of remote controllers in
one group
1-2
Number of system controllers in
one group
0-4 (including the number of remote controller in one group)
Number of interlocked LOSSNAY
units
• Number of LOSSNAY units that can be interlocked with an indoor unit: 1
• Number of indoor units that can be interlocked with a LOSSNAY unit: 16
Us
er O
peration
s
Fu
nc
tio
n
Operation
*1
*7
ON/OFF
The ON/OFF operation can be performed as a collective, per group, or per block.
Operation mode
The switch operation for the operation mode setting can be performed as a collective, per group,
per block, per floor, or per building. (Available modes depend on the model of indoor units.)
[Selectable operation mode for the indoor unit]
COOL/DRY/FAN/AUTO/HEAT
[Selectable operation mode for the independent ventilation]
HEAT RECOVERY/BY-PASS/AUTO
[Selectable operation mode for Air To Water (PWFY) and HWHP (CAHV)]
HEATING/HEATING ECO/HOT WATER/ANTI-FREEZE
COOLING (for Air To Water (PWFY))
Fan speed
Up to four fan speeds are available. Fan speed can be changed collectively, or for each group or
block of indoor units. (The number of available fan speeds depends on the indoor model (2 speeds,
3 speeds, 4 speeds, and Auto). “Auto” is available only on the models that support that function.)
Temperature setting
Temperature setting can be performed collectively, per group, or per block.
[Setting temperature range for air conditioner]
Cool (Dry) operation:
19 ~ 30°C / 67 ~ 87°F
Heat operation:
17 ~ 28°C / 63 ~ 83°F
Auto operation:
19 ~ 28°C / 67 ~ 83°F
[Setting temperature range for Air To Water (PWFY)]
[Booster unit]
*3
Heating:
30 ~ 50°C/87 ~ 122°F
Heating ECO: 30 ~ 45°C/87 ~ 113°F
Hot Water:
30 ~ 70°C/87 ~ 158°F
Anti-freeze:
10 ~ 45°C/50 ~ 113°F
Cooling:
Invalid
[Setting temperature for HWHP (CAHV)]
Heating:
25 ~ 70°C/77 ~ 158°F
Heating ECO: Invalid
Hot Water:
25 ~ 70°C/77 ~ 158°F
Anti-freeze:
Invalid
[Water HEX unit]
*3
Heating:
30 ~ 45°C/87 ~ 113°F
Heating ECO: 30 ~ 45°C/87 ~ 113°F
Hot Water:
Invalid
Anti-freeze:
10 ~ 45°C/50 ~ 113°F
Cooling:
10 ~ 30°C/50 ~ 87°F
Air direction and swing operation
Vertical air flow directions (5 directions), auto setting, and swing setting can be changed collectively,
or for each group or block of indoor units. (Available air flow directions depend on the model. [5 air
flow directions and AUTO] are available only on the models that support those settings.
Fan mode (HWHP (CAHV))
The fan mode of HWHP (CAHV) units can be switched between Normal and Snow.
Operating/stopping interlocked
LOSSNAY units
Interlocked LOSSNAY units (if any) can be operated (at High or Low) or stopped collectively or for
each group or block of indoor units. (Ventilation mode cannot be selected for the interlocked
LOSSNAY units.)
Schedule*5
Group is the smallest unit to which a weekly schedule can be assigned. The same schedule can be
applied collectively, or to each group, groups in a block, or groups on a floor.
• Up to 24 events can be scheduled for each day.
• “ON/OFF”, “Operation mode”, “Temperature Setting”, “Fan Speed Setting”, “Vane Setting”, and
“Prohibition of operation from local remote controller” can be timer-controlled.
If a license is registered
• Five types of weekly schedule patterns are available.
• Five operation patterns (A-E) can be set for each year, up to 50 days can be allocated to each
pattern.
• When Optimized startup schedule is set, the operation starts so that the preset temperature is
reached at the preset time. (Applicable to indoor units only)
Schedule
Available/Not Available
Schedule settings can be Available or Not Available for each group, block, floor, or for all units
collectively.
Prohibit local remote control
Operation of certain functions from the local remote controllers can be prohibited collectively or for
each group or blocks of indoor units.
(Applicable functions: ON/OFF, operation mode, temperature setting, filter sign, Water circuit sign
(Air To Water (PWFY)))
Filter sign reset
Filter sign can be reset for each group or block of indoor units.
Water circuit sign reset
(Air To Water (PWFY))
Water circuit sign (Air To Water (PWFY)) can be reset for each group or block of indoor units.
Error reset
Resets the display of error.
Error history reset
Resets the error history (unit error, communication error).
WT05369X15.book Page 3 Wednesday, November 7, 2012 10:33 AM