Johnson Controls YVAHP0721CW Series, Service Manual

Page: 70 / 416

1-56
SM-16007
INSTALLATION
Ɣ Setting of End Terminal Resistance
Before shipment, No.1 pin of DSW10 (for the setting of end terminal
resistance) is in the “ON” position.
In the case of one refrigerant system in the same H-LINK II,
set all No.1 pin of DSW10 in the “OFF” position except the main
outdoor unit A.
Ɣ $XWRPDWLF6LPSOH-XGJPHQW6\VWHPIRU5HIULJHUDQW$PRXQW1RSLQRI'6:
This function is NOT available for this outdoor unit.
,I1RSLQRI'6:LVWXUQHG21VHJPHQWGLVSOD\ÀDVKHV³ ” , which means forced
termination of this function.
Ɣ '6:6HWWLQJIRU5DWHG9ROWDJH
DSW7 is used for setting of rated voltage for the outdoor unit as
shown at right.
When the site power source voltage is different from factory setting,
a DSW7 setting is required.
NOTE:
The same voltage setting is required to the main unit and sub unit(s).
If more than one refrigerant system is in the same H-LINK II, set all No.1 pin of DSW10 to the “OFF”
position except the main outdoor unit A.
In a situation of one refrigerant system in the same H-LINK II, set all No.1 pin of DSW10 in the “OFF”
position except the main outdoor unit A.
1 2 1 2
ON
OFF
ON
OFF
Before Shipment Cancellation
DSW10
Setting of End Terminal Resistance
Voltage DSW7 Setting
208V
230V
460V
1 2 3 4
ON
OFF
1 2 3 4
ON
OFF
1 2 3 4
ON
OFF
1 2
DSW10
1 2
DSW10
1 2
DSW10
Communication Line
(No Polarity)
H-LINK II
Outdoor Unit
(Unit Combination)
Indoor
Unit
Cancel the end terminal setting.
Set the end terminal.
Unit A
(Main) Unit B
(Sub) Unit C
(Sub)
1 2
DSW10
1 2
DSW10
1 2
DSW10
1 2
DSW10
1 2
DSW10
1 2
DSW10
1 2
DSW10
Communication Line
(No Polarity)
H-LINK II
Outdoor Unit
(Unit Combination)
Indoor
Unit
Wired Controller
Indoor
Unit
Indoor
Unit
Indoor
Unit
Outdoor Unit
(Base Unit)
Cancel the end terminal.
Cancel the end terminal setting.
Cancel the end terminal. Cancel the end terminal.
Outdoor unit being
set end terminal
Set the end terminal. Outdoor Unit
(Unit Combination) Outdoor Unit
(Base Unit)
Unit A
(Main) Unit B
(Sub) Unit C
(Sub)
Unit A
(Main) Unit B
(Sub)