Toshiba ESTIA HWS-1501CSHM3-E, Service Manual

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62
8-3.
Hydro Unit Control 3) Circulation pump control
One circulation pump (enhancing pump P2) can be connected to the unit in addition to the built-in circulation
pump P1.
You can change the settings of the built-in pump P1 and the enhancing pump P2 using DP_SW10-1, 2, and
3 in the hydro unit.
If the enhancing pump P2 is set to Non-interlock, the pump P1 is always energized.
3-1) Controlling the built-in circulation pump P1
Pump type: AC motor, rated voltage 230V, three-speed (changed manually)
The pump operation starts under the condition below:
• When the [HOT WATER] or [ZONE1,2] button is pressed.
The pump operation stops under the condition below:
• When the [HOT WATER] or [ZONE1,2] button is pressed. (Operation will stop fully in about 1 minute.)
The pump operation stops/restarts under the conditions shown below.
• When changing operation modes, the pump stops for 30 seconds.
3-2) Controlling the built-in pump P1 during the hot water supply operation
You can change the action of the built-in pump P1 during the hot water supply operation using DP_SW10-1.
• DP_SW10-1 OFF(Default): The pump stops as the HP for hot water supply stops.
• DP_SW10-1 ON: The pump is always energized.
3-3) Controlling the built-in pump P1 during the heating operation
You can change the action of the built-in pump P1 during the heating operation using DP_SW10-2.
• DP_SW10-2 OFF(Default): The pump is always energized.
• DP_SW10-1 ON : The pump stops when To
≥
20°C. (Practically the HP for heating is turned off.)
3-4) Enhancing circulation pump P2
Pump type: AC motor, rated voltage 230V, connectable directly up to 200W rated power output.
You can select whether the pump P2 is interlocked with the pump P1 using DP_SW10-3. The pump P1 is always
energized if the pump P2 is not interlocked.
3-5) Controlling the enhancing pump P2
You can change the action of the enhancing pump P2 during cooling operation by setting FC64.
• FC64=”00”(Default): The pump is always energized.
• FC64=”01” : The pump is always stopped.
3-6) Controlling the built-in pump P1 during cooling operation controlled with the room temperature thermostat or room
temperature remote control.
You can change the action of the built-in pump P1 by setting FC65.
• FC65=”00”(Default): The pump is always energized.
• FC65=”01” : The pump is stopped when the thermostat is turned off.
Related FC
Item Operation flow and applicable data, etc.
Item Operation Initial value DPSW
AC pump 01: Built-in pump P1’s action during how water supply operation:
HP operation only/Always energized
OFF: HP operation
only SW10-1
02: Built-in pump P1’s action during heating operation:
Always energized/Turned off when TO sensor detect over than 20°C.
OFF: Always
energized SW10-2
03: Enhancing pump P2’s action:
Interlock/Non-interlock with the built-in pump P1
OFF: Interlock
*2
SW10-3
04: None
Boiler is installed or not
(DPSW13_2)
Boiler position
(DPSW02_1)
P1 pump control
Stop/restart temperatures
(TWI or TWO or THO)
0
(Not installed)
0 (After 3-way valve, heating side) 70°C / 68°C
1 (Before 3-way valve) 70°C / 68°C
1
(Installed)
0 (After 3-way valve, heating side) 70°C / 68°C
1 (Before 3-way valve) 58°C / 55°C
FC No. Setting item Default Setting value
5A Control of the pump P1 during the hot water supply operation 0: Interlocked with HP
1: Always energized
Equal to DPSW10-1
64 Control of the pump P2 during in cooling operation 0: Always ON 1: Always stopped
65
Control of the pump P1 while using the room temperature control
or room temperature thermostat
0: Always ON
1: Stopped when the
thermostat is OFF
9E Turn off the P1 when TO sensor detect over than this temperature 0: 20°C 10~30°C