10.5 External Static Pressure Setting
How to set the unit to high ESP.
(1) Standard external static pressure for VRV is 29.4 Pa (0.12"Wg).
(2) High external static pressure of 58.8Pa (0.24"Wg) is available by field setting as show
In this case a kind of sound proof device should be considered because of
increasing the operation sound.
Set the unit along the operation name plate attached to the face of the switch box.
If required, carry out field setting according to the following instructions:
See the service manual for details.
1. Handing access door and switch
When carrying out field setting, open the access door as shown on the
right and operate the SWITCH with an insulating stick such as a
ball-point pen to avoid touching the live part.
Make sure to shut the access door when the work is finished.
2. Setting the dip switch (DS1-1~4)
What to be set by dip switch (DS1-1~4)
Setting of COOL/HEAT changeover OUT/IN(factory set)
These are not used.Do not change the factory setting.
DS2,DS3 are not used. Do not change the factory setting.
Connect the opotional remote controller for COOL/HEAT changeover to the outdoor unit
printed circuit board (PCB) (A2P) and change the COOL/HEAT setting switch (DS1-1) from
IN (factory set) to OUT.
3. Setting by push button switch (BS1-5)
• Function of push button switch. (on the outdoor unit PCB (A1P))
The set mode can be changed by the MODE button (BS1) according to the following procedure.
SETTING MODE 1
flashes and the page change button (BS1) is pushed once, it change to SETTING MODE 1 .
When I do low noise driving by an outside order or demand driving, COOL/HEAT setting with a COOL/HEAT CENTRALIZED remote
controller,it is required to use the optional adapter for outdoor unit external control. See the instruction attached to the ad apter.
Hold down for 5 seconds MODE (BS1)
Press once MODE (BS1)
Touch the metal part such as the switch box and make sure to
eliminate static electricity before performing service.
If you get confused in the middle of setting process, push the MODE
button (BS1). Then, if returns to SETTING MODE 1 (H1P:light off)
For resetting the address when the wiring is changed or an additional indoor
unit is installed
For test operation
For field setting
For changing the set mode
SETTING MODE 2
Lift this protruding portion to
open the access door
Switch box cover
Dip switch2 (DS2-1~4)
(The LED indication shown left shows the state
when the unit is shipped from the factory)
Installation of Outdoor Units