Toshiba HWS-G2601ENXR-E - B7 Floor; B8 Floor T

Domestic Hot Water Heat Pump Service Manual
29
7.11.02 B7 Floor / B8 Floor T
The floor heating function activates an external circulation pump, controlled by the extra relay
(GP1)
The setup of the floor heating function is carried out using the function menu and B7 (Floor) & B8
(Floor T)
Code
Set point
name
Description
Range
Factory
setting
B7
Floor
If the temperature at the bottom of the tank BT4 (T water b) is higher than
the setting menu D25 (Floor T start) the floor heating function is activated.
If the extra temperature BT5 (T Extra) is higher than the floor heating
temperature (B8 T floor) the circulation pump (Extra relay GP1) stops.
OFF/ON
OFF
B8
Floor T
The desired floor heating temperature in °C with hysteresis of 1K.
15 - 40
35
The following schematic shows the electrical connections for the underfloor heating operation
ON
OFF
PUMP
22
21
12
29
23
30
Tank Temperature °C
Floor Temperature °C
T4: Temperature Tank Bottom Control
T5: Floor Temperature
Based on following set conditions
Installer menu
D24: Floor Set Start = 30°C (T4)
D26: Extra Function = Floor
Function menu
B7: Floor = ON
B8: Floor Temp = 22°C (T5)
BLU
B (D-)
L
N
L
N
0V
0V
L
L
0V
0~10V Input
BT3
EB1
Room Temperature
0V
0V
0V
FM
BT2
BT1
0V
0V
L
N
PE
230VAC ~ 50Hz
0V
A (D+)
0V BLU
0~10V PWM
YEL
High pressure switch.
Compressor STOP when
Pd ≥ 2.0MPa
Solenoid valve.
Solenoid ON for 2 min
before compressor
starts and during
system defrost
BRN
BLK
N
BLU
BLK
BRN
BRN
BLU
BT5
BT4