Hitachi EXV-2.0E - Thermistor Installation

7.4 THERMISTOR INSTALLATION

Liquid and gas pipes thermistors
7ZRW\SHWKHUPLVWRUVDUHVXSSOLHGLQVLGHWKHFRQWUROER[7KHSXU-
SRVHDQGLGHQWL¿FDWLRQRIHDFKRQHLVDVIROORZ
Item
PCB socket /
Thermistor
connector color
PCB
socket
number
Thermistor
length (mm)
/LTXLGSLSHWKHUPLVWRU %ODFN 7+0 
*DVSLSHWKHUPLVWRU <HOORZ 7+0 
CAUTION
,Q FDVH WKDW WKH WKHUPLVWRUV VXSSOLHG ZLWK WKH '[,QWHUIDFH
DUH QRW ORQJ HQRXJK SOHDVH PDNH VXUH WKDW WKH OHQJWK H[-
WHQVLRQLVSURSHUO\GRQHDYRLGLQJWKHVHQVLQJGLVWRUWLRQDQG
WKDWWKHMRLQWLVSURSHUO\LQVXODWHGWRDYRLGDQ\HOHFWULFDOIDLO-
XUH
NOTE
:KHQ ¿WWLQJ WKH WKHUPLVWRUV UHPHPEHU WKDW WKH\ PXVW EH
VHFXUHGFRUUHFWO\E\WKHVSHFLDOFODPSHQVXULQJWKHSHUIHFW
FRQWDFWEHWZHHQWKHSLSHDQGWKHUPLVWRU&RYHULWFRPSOHWHO\
ZLWKLQVXODWLRQOLNHFRUNWDSHRUSLSHLQVXODWLRQGHSHQGLQJ
RQ WKH ORFDWLRQ 5HSODFH WKHP LI GDPDJHG GXULQJ PDLQWH-
QDQFHZRUN
Thermistor installation example

/LTXLGJDVSLSHWKHUPLVWRUIDFWRU\
VXSSOLHG
1
2
3
4
 7KHUPLVWRUKROGHU¿HOGVXSSOLHG
 7KHUPLVWRUOHDGZLUH¿HOGVXSSOLHG
 ,QVXODWLRQ¿HOGVXSSOLHG
CAUTION
7KHWKHUPLVWRUPXVWEHLQVWDOOHGSURSHUO\LQRUGHUWRDYRLG
ZDWHURQWRWKHWKHUPLVWRU
Typical installation location
$
/LTXLGSLSH
WKHUPLVWRU
0XVWEHLQVWDOOHG
LQWKHFROGHVWOLTXLG
OLQHSRLQWLQWKH
KHDWH[FKDQJHU
SULRUWKHGLVWULEX-
WRU
B
*DVSLSH
WKHUPLVWRU
0XVWEHLQVWDOOHG
DVFORVHDV
SRVVLEOHWRWKH
KHDWH[FKDQJHU
UHIULJHUDQWRXWOHW

Air thermistor
7ZRDLUWKHUPLVWRUVDUHVXSSOLHGLQVLGHWKHFRQWUROER[7KHSXU-
SRVHDQGLGHQWL¿FDWLRQRIHDFKRQHLVDVIROORZ
Item
PCB socket /
Thermistor
connector color
PCB socket
number
Thermistor
length (mm)
,QOHWDLUWKHUPLVWRU %OXH 7+0 
2XWOHWDLUWKHUPLVWRU 5HG 7+0 
CAUTION
,Q FDVH WKDW WKH WKHUPLVWRUV VXSSOLHG ZLWK WKH '[,QWHUIDFH
DUH QRW ORQJ HQRXJK SOHDVH PDNH VXUH WKDW WKH OHQJWK H[-
WHQVLRQLVSURSHUO\GRQHDYRLGLQJWKHVHQVLQJGLVWRUWLRQDQG
WKDWWKHMRLQWLVSURSHUO\LQVXODWHGWRDYRLGDQ\HOHFWULFDOIDLO-
XUH
NOTE
:KHQ¿WWLQJWKHDLUWKHUPLVWRUUHPHPEHUWKDWWKH\PXVWEH
VHFXUHFRUUHFWO\LQDQDGHTXDWHSODFHWRDYRLGH[WHUQDOLQÀX-
HQFHVOLNHDPELHQW FRQGLWLRQV DQGZKHUHWKHDLU WHPSHUD-
WXUHLVVLJQL¿FDQW
Cable clamp example
 7LH)LHOGVXSSOLHG
 &DEOHFODPS)LHOGVXSSOLHG
 7KHUPLVWRUVXSSOLHG
CAUTION
7KHWKHUPLVWRUPXVWEHLQVWDOOHGSURSHUO\LQRUGHUWRDYRLG
ZDWHURQWRWKHWKHUPLVWRU
Typical installation
 7KHUPLVWRU
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300/$UHY
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