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Toshiba
7 Refrigeration Cycle / Water System Diagram
7-1. Water System Diagram
M
M
Fan coil unit
Radiator unit
Floor
heating
By-pass valve
(locally procured)
By-pass valve
(locally procured)
Moterized mixing valve
(locally procured)
AC230V
Buffer tank(locally procured)
AC pump
(locally procured)
AC pump
max : 10bar
Strainer
(locally procured)
40 mesh
Motorized 3-way valve
(locally procured)
AC230V
Booster heater
(local)
2-way valve for
cooling mode
(locally procured)
AC230V
Safety valve
set : 3.5bar
Boiler
(local)
Drain cock for water charge
(locally procured)
Cylinder heater
Ø
1 : 2.75kW
Relief valve(UK)
90°C
10 bar
Water outlet
Water inlet
Reducing
valve(UK)
3.5bar
Pressure relief
Set value : 7bar(UK)
Water heat exchanger
max : 10bar
Backup heater
Ø
1 : 3kW
Ø
3 : 6kW
Ø
3 : 9kW
Flow sw
Thermal protector
(auto)
set : 75 ± 3°C
Thermal protector
Single operation
set : 95 ± 5°C
Low pressure sensor
Pressure switch
4.15MPa
Expansion vessel
set : 1bar
Pressure relief valve
set : 3bar
Menometer
gage : - 6bar
Water vent
valve
Air vent valve
Outdoor unit
8,11,14kw
Thermal cut-out
(manual reset)
82°C (+3k/ -2k)
zone1
zone2
TFI
TTW
TC
TWO
THO
TWI
Hot water cylinder
Local hot water system
+00A09-002_01EN_SVM_ALL_Air_to_Water.book Page 32 Monday, October 5, 2009 2:09 PM