Daikin VAM Series Engineering Data page 48

Control System
Pre-cooling/Pre-heating operation
Purpose • Functions
This is an energy saving function to reduce the ventilation load at the start of air conditioner by delaying the operation of Heat Reclaim
Ventilator Unit during the startup operation of air conditioner in early morning.
POINT
Pre-cooling and pre-heating operations are available only for 1 group
interlocking control and centralized zone interlocking control.
Be sure to perform interlocked control with air conditioner.
(It does not work in independent system.)
System
1 group
Interlock
interlocking control
Zone Management
Centralized
Indoor unit
[
is necessary
management
within the same
zone
Delay time can be selected from 30/45/60 minutes by field setting.
If this delay time is insufficient, it can be further extended by 30/60/90
minutes only for pre-heating operation.
Example of control wiring
P1 P2
P1 P2
Remote controller
Switch number that needs to be changed for the system
Field settings using remote controller is required.
Field settings using remote controller
Setting descriptions
Pre-cooling • pre-heating operation setting
Pre-cooling • pre-heating operation time setting
Pre-heating extension time setting
Factory default setting
Essential optional accessory
NIL.
46
Operation command Conditions for operation
From From Heat Reclaim
remote centralized Ventilator Unit
controller equipment remote controller
— Unnecessary
〇
]
— 〇 Necessary
F1 F2
P1 P2
Indoor unit
Note) The maximum length of remote controller cord is up to 500m.
Mode Setting switch
No.
17 (27)
Operating conditions
Operation
command
Pre-cooling/
pre-heating
setting
"ON"
Indoor unit operation
mode
Y
Only during cooling
or heating
Elapsed
Do not set pre- time since
last stop:
cooling/pre-heating
> 2 hours
during independent
ventilation operation
as it involves a delay. Y
Heat Reclaim Ventilator Unit
No.
01
2 OFF
3 30 minutes
9 0 minutes
Set time
(30/45/60 minutes)
N
Only during
heating ⊕
(30/60/90 minutes)
Time count
N
Operation standby
Preset time
elapsed
Y
Operation start
Setting position
02 03
ON —
45 minutes 60 minutes
30 minutes 60 minutes
VAM-HVE/HVLT Series
EDMMT712101
N
04
—
—
90 minutes