Toshiba ESTIA HWS-802XWHM3-E - Operating the System; Basic Operations

–8–
Hydro Unit
Installation Manual
 Example of 2-Zone Temperature Control and Hot Water Supply
System
The following shows an example of the 2-zone temperature control.
A buffer tank and a water pump are required for the 2-zone temperature control.
▼ Fig. 5-02
M
M
M
TTW
TFI
TRV
TRV
Temp.
Regulating
Valve
(Mechanical)
Isolating
Valves
(Service)
Strainer (40 mesh / 0.4 mm)
Diverting
3-Way
Valve for
Sanitary
Hot
Water
Tank
Drain Cock for water
Charge and Drain
Zone 1
Fan Coil Unit (Heating
or Cooling)
Temperature
Regulating
Valve
(Mechanical)
Hi-Pressure
By-Pass
Valve
Indirect Sanitary Hot
Water Tank
Mixing 3-Way
Valve for Under
Floor Heating
External Pump for
Under Floor Heating
Motorized 2-Way Valve
is required if fan coil
units are in cooling
operation.
Direct Buffer tank for
Under Floor Heating
Zone 2
Under-floor Heating
(2-Way Valve Control)
7-EN