Hitachi YUTAKI Series - Wiring Connections

Controller pack
Service Manual
114
Electrical wiring
SMGB0066 rev.0 - 12/2009
 

caution
Static electricity. Malfunction.The electronic components within the System Controller are susceptible to damage -
caused by static electricity. When handling the device:
Do not touch internal components. -
Touch an earthed piece of metal to discharge static electricity from your body. -
Incorret wiring. Electrical damage. A short circuit or incorrect installation will damage the system controller. -

Theterminalblocks(A,BandC)havethesameterminalsandaresuitableforwiresfrom0.3to1.6mm
2
. The earth
connector block D is suitable for wires from 0.3 to 2.7mm
2
.

note
In some applications, there may be several input and output cables that cannot be connected directly within the -
system controller terminal blocks. In such cases, it is recommended that a separate wiring centre is used, with
an appropriate cover as necessary.

Themainspowerconnection(230VAC)iswiredtoconnectorblockB,terminals13and15.Terminal13and14are
internally connected.
N
N
L
15
14
13

Theearthwirescomingfromthemainspowercableandthepump,mixingvalve,heatpumpandboiler,canbecombined
and connected to connector block D. All three terminals are internally connected.