Toshiba HWT-60 - Page 12

Hydro Unit
Installation Manual
– 11 –
Hydraulic heat exchanger (14kW) QH characteristics
Minimum flow rate
Flow rate [L/min]
Head [m]
▼Fig.7-16
0
1
2
3
4
5
6
7
8
9
10
0 5 10 15 20 25 30 35 40
▼
Out of range
Hydro unit (wall mount)
Q-H characteristics(230V)
Pump Duty
100%
80%
60%
Ensure the minimum water flow rate. The method for confirming the water flow rate is described below.
 Follow the steps below to set DN [6A6] to [0000] and DN [A0] to [0000]. Pump speed is maximized.
* For DN code settings, Please refer to the installation manual of Hydro unit.
* Hydro unit DN code setting is available only for the header remote controller.
 If there are some valves for adjusting the flow rate in the local water circuit, make sure that the piping resistance
during operation is maximized.
 Start heating operation and confirm that the circulating flow rate is the following or higher by using the Sensor
information function. If the system is configured for cooling or hot water supply, please check the water flow
rates in these modes also.
HWT-60:11L/min or more
HWT-110: 14L/min or more
HWT-140: 18L/min or more
* To display the Sensor information, Please refer to the installation manual of Hydro unit.
 If the flow rate is less than the above limit, the equipment cannot be used. Reduce piping resistance by
installing a bypass circuit, etc., and ensure the above flow rate.
 Set DN [6A6] to [1] (factory default). The pump speed is variable.
*The display update frequency is about 10 seconds
(1) Press [ ] / [ ] button to select “Sensor
information” on the “FIELD SETTING MENU”
screen, then press the [ ] button.
FIELD SETTING MENU(2/2)
Service monitor
Hydro Unit DN
Reset power consumption data
Sensor information
Remote controller DN
SET
(2) Select display number.
• Display1isHydroUnitsensor
• Display2isOutdoorUnitsensor
RETURN
Sensor information (1/2)
TC 30°C
TWI 30°C
TWO 35°C
THO 35°C
WF 23.0 L/min
LPS 1.2MPa
TTW 45°C
TFI 30°C
RT 20°C
MIX 10step
0
1
2
3
4
5
6
7
8
9
10
0510 15 20 25 30 35 40
Pump operation/configuration
▼Fig.7-14
Hydraulic heat exchanger (6 kW) QH characteristics
Minimum flow rate
Flow rate [L/min]
Out of range
Head [m]
Pump duty
100%
80%
60%
Hydro unit (wall mount)
Q-H characteristics (230V)
0
1
2
3
4
5
6
7
8
9
10
0510 15 20 25 30 35 40
Hydraulic heat exchanger (11 kW) QH characteristics
Minimum flow rate
Flow rate [L/min]
Out of range
Head [m]
Pump duty
100%
80%
60%
Hydro unit (wall mount)
Q-H characteristics (230V)
▼Fig.7-15
21-EN
22-EN
Water charging
Fill the system with water until the pressure gauge
shows the recommended pressure value of 0.15 MPa
(1.5 bar).
Hydraulic pressure may drop when the trial run begins.
In that case, add water.
Air may enter if the charged hydraulic pressure is low.
Loosen the purge valve cap by two turns to release air.
▼Fig.7-17
Loosen 2 turns for
proper venting
* Purge valve cap faces the front as factory default.
* The direction purge valve cap may change during
transportation.
Loosen the cap of the pressure relief valve to release
air.
Water may come out of the pressure relief valve.
Release the air completely from the water circuit.
Failure to do so may disable correct operation.
Water quality
The water used must satisfy EN directive 98/83 EC.
Piping insulation
It is recommended that insulation treatment be applied
to all pipes. To perform optional cooling operation,
apply insulation treatment of 20 t or more to all pipes.
(Display example of Sensor information)