Toshiba HWT-601XWHT6W-E - Page 63

62
7-2.
Operation Mode
and Control
Method
7-2) Boiler-output control
• I zone: heat pump operation
Normally the heat pump operation is executed in the zone.
• J zone: heat pump operation and boiler operation *1
In the zone, the heat pump + boiler operation (*2) is executed and the heater operation is executed in the hot-water-
supply side.
*2:Operation mode is not changed with the outside temperature when an external signal to control the limit of heat
pump limit operation (see 7-3-10) is input.
7-3) Boiler output limit control
The boiler power output is limited depending on the settings of boiler position (DN_6B1) and DN_62.
7-4) A02 error detection while the boiler is running
A02 error detection is deactivated depending on the settings of DN_62 and whether the boiler is installed or not (DN_6B0).
*1 If a user runs the boiler under the condition that no limit has been set, and hot water from the boiler has damaged parts
inside of the hydro unit, the user is fully responsible for the damage.
7-5)2 zone temperature control while the boiler is running
2 zone temperature control by boiler with P1 OFF is required DN_6B5 OFF
Item Operation flow and applicable data, etc.
-10
I zone
J zone
Heat pump
operation
Heat pump &
boiler operation
TO
Diff: 5K
Boiler position
(DN_6B1)
DN_62
(Activate/deactivate A02 error
detection)
Temperature range in which the boiler signal is output
(Detected temperature of TWI, TWO or THO)
OFF
(After 3-way valve, heating side)
0 TWI and TWO and THO < 67°C
1 TWI and TWO and THO < 67°C
ON
(Before 3-way valve)
0 TWI and TWO and THO < 70°C
1No limit *1
Boiler is installed or not
(DN_6B0)
DN_62
(Activate/deactivate A02
error detection)
Temperature recognized as A02 error
(Detected temperature of TWI, TWO or
THO)
OFF
(Not installed)
0 TWI or TWO or THO ≥ 70°C (Beep)
1 TWI or TWO or THO ≥ 70°C (Beep)
ON
(Installed)
0 TWI or TWO or THO ≥ 70°C (Beep)
1 No error detection *1 (No beep)
Boiler is installed
(DN_6B0)
ZONE2 operation is
using
(DN_6BA)
P2 synchronize
with P1
(DN_6B5)
DN_5B
Coordination of the
boiler and heat pump
2 zone temperature control
P1 / P2 / Mixing Valve control
ON
(Installed)
ON
(Using)
OFF
(No synchronize,
Always ON)
0
(Boiler and heat pump)
ON / ON / ON
1
(Boiler only)
2
(Heater only)
3
(Boiler only (P1 OFF))
OFF / ON / ON
ON
(Synchronize)
0
(Boiler and heat pump)
ON / ON / ON
1
(Boiler only)
2
(Heater only)
3
(Boiler only (P1 OFF))
OFF / OFF / OFF