Daikin VAM-FA Technical Data Manual page 79

15 Control systems
15 - 4 Applicable patterns
15 - 4 - 1 Additional functions
Precool / preheat operation
Purposes and functions
• The operation of HRV unit is delayed when the air
conditioner begins operation.
Cautions
1. The precool / preheat function is possible only when the
operation of HRV unit is interlocked to one-group or two-
group of indoor unit.
(It will not function when the HRV unit is in independent
operation.)
2. You can select the preset time of 30 / 45 / 60 minutes for
delayed operation at the time of initial setting.
If this preset time is not sufficient, you can extend the preset
time for further 30 / 60 / 90 minutes only the preheating
function.
3. Since this is two remote control system (for Indoor unit and
HR unit), the Master / Slave setting is required.
Remote control for
Indoor unit
HRV unit
Remote control operation by input from outside
Purposes and functions
• The HRV unit can be controlled the operation of "On / Off"
remotely by the signal from no-voltage normally open
contact.
Cautions
1. When the system is under group control, the input from
outside controls the operation of "ON / OFF" collectively, if it
is installed in the one of the unit.
• Heat reclaim ventilation • VAM-FA/FB
Setting
Slave
Master
• Ventilation • Heat reclaim ventilation
Example of control wiring
F1 F2
P1 P2
Indoor unit
P1 P2
Remote control
for indoor unit
Connecting line can
be extended up to
500 m.
Switch setting of the HRV unit
The initial setting by the remote control for the indoor unit.
• Precool / preheat On / Off setting
................................................."ON" [17(27)·2·02]
• Precool / preheat time setting
..........................................."Time" [17(27)·3·*1]
• Preheat extra time setting
..........................................."Time" [17(27)·9·*2]
*1 setting 01 for 30, 02 for 45 and 03 for 60 minutes.
*2 setting 01 for 0 (factory set), 02 for 30, 03 for 60 and 04 for
90 minutes.
Optional accessories required
• None
Example of control wiring
Connecting line can be extended up to 50 m
J1 J2 JC F1 F2
SS1
X11A
X9A
X10A
P1 P2
HRV unit
P1 P2
Remote control
for HRV unit
Switch setting of HRV unit
• No change is required.
Optional accessories required
• None
J1 J2 JC F1 F2
X11A
SS1
X9A
X10A
P1 P2
HRV unit
P1 P2
Remote control
for HRV unit
(HC0033)
(Terminal for local connection
No-voltage normally open
contact for micro-current)
(16 V, 10 mA)
(HC0034)
3
1
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