Toshiba HWS-P804XWHM3-E1(TR) Service Manual page 56

Item
8-3. 4) Control by the flow switch
Hydro Unit Control
Whether water flows or not is judged with the ON/OFF of the flow switch.
HWS-P804**-E1
HWS-P1104**-E1
Without water-flow determination from the flow switch after the hot water supply operation, heating operation, or cooling
operation, The HP, backup heater and booster heater are not energized. Similarly, The "A01" error indication flashes if
the flow switch judged that water does not flow.
The specification of the flow switch is the same in P804**-E1 and P1104**-E1. The flow setting differs due to the
specification of piping in the hydro unit.
5) Mixing Valve control (2-temperature heating control)
To set different radiator unit supply temperatures or floor heating supply temperatures, the unit performs Mixing Valve
control.
When Mixing Valve "Yes" is selected, the unit controls Mixing Valve every 4 minutes (FC) based on the difference TSC_Δ
T between the Zone2 set temperature and TFI (floor inlet water temperature sensor) temperature as follows:
To enable 2 zone temperature control switch DP_SW12-3 to ON.
NOTE:
The mixing valve will automatically be reset if 24 hours pass with the valve fully closed.
2 zone temperature control by boiler with P1 OFF is required DP_SW10-3 OFF.
Related FC
FC No.
6) Room temperature control
6-1) Installing the sub remote controller
• Wiring with the main unit (See the figure on the right) : After detaching the front
• Place to install (inside a room): At the height of 100 cm-150 cm on a wall
6-2) Room temperature control settings
• Function code setting:FC_40="1"
• Setting of DPSW on the remote controller :
AMP Air Conditioning
Operation flow and applicable data, etc.
Model Determined that water flows when:
13L or more water flows per minute
18L or more water flows per minute
2 ≤ TSC_ΔT
TSC_ΔT
Control value + 1 step (Open)
Initial value Driving range
6
Setting item
0C Mixing Valve operation time
59 Mixing Valve control time
You can install a sub remote controller (separately purchased) in a room to control room temperature.
panel, connect the sub remote controller to the right terminal on the main remote
controller, which is connected with the hydro unit. (No polarity)
Opposite to the radiator or fan coil installed
No assignment when floor heating is used on the room.
DP_SW01,02="ON"(DP_SW03,04="OFF")
-2 ≤ TSC_ΔT < 2
± 0 step
1 step
0-12 3 WV move 7.5 degrees
Default
Connecting terminal on
the remote controller
DP_SW01,02="ON"
(DP_SW03,04="OFF")
55
Determined that water does not flow when:
Water less than 13L flows per minute
Water less than 18L flows per minute
-2 > TSC_ΔT
- 1 step (Close)
Control cycle
4 min (FC)
Setting available range
60 30 - 240 sec
4 1 - 30 min
Right terminal on the
main remote controller
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