Pump Interlock - Mitsubishi PWFY-P36NMU-E-BU Service Handbook

< PWFY-P72NMU-E2-AU >
SVG
ST2
Gas
piping
Brazed
CV2
SVL
ST4
Liquid
piping
Brazed
[2]

Pump interlock

< PWFY-P36NMU-E-BU >
< PWFY-P36/72NMU-E/E2-AU >
packaged
A
CV1
LEV1Wa
SV
LEV1Wb
(Fig.C)
Board
AC208 - 230V
DC30V or less
TB141A OUT1
52P or 72P
51P or 71P
B
Field supply
TH23 TH8
Screw
TH22 TH6
Screw
PWFY-P36/P72NMU-E/E2-AU,
or
Fuse
Coil of the magnetic contactor for heat source water
pump
Double pole contact of the magnetic contacts for heat
52P or 72P
source water pump
Circuit breaker
Water pump
Bimetal break contact
- 35 -
Flow switch
Field supply
Brazed
Brazed
Water inlet
Water outlet