23
1. When EVU signal is on , and SG signal is on, as long as the
DHW mode is set to be valid, heat pump will operate DHW mode
priority and the DHW mode setting temperature will be change to
70
o
C. Thwt
＜
69
o
C
，
the TBH is on,Thwt≥70
o
C
，
the TBH is off.
2. When EVU signal is on , and SG signal is off, as long as the
DHW mode is set to be valid and the mode is on, heat pump will
operate DHW mode priority. Thwt
＜
Thwt(Set)-2
，
the TBH is
on,Thwt≥Thwt(Set)+3
，
the TBH is off.
3. When EVU signal is off, and SG signal is on, the unit operates
normally.
4. When both EVU and SG siggnal are off, the unit operates as
below: The unit will not operate DHW mode, and the TBH is invalid,
disinfect function is invalid. The max running time for cooling/heat-
ing is ”SG RUNNING TIME”, then unit will be off.
11) For smart grid
The unit has smart grid function, there are two ports on PCB to
connect SG signal and EVU signal as following:
SMART GRID
L
N
CN32
CN33
CN31
TBH
1
SL1
2
SL2
3
1ON
4
1OFF
5
2ON
6
2OFF
7
3ON
8
IBH1
9
N
10
N
11
N
12
N
13
4ON
14
4OFF
15
3OFF
16
MV1
1
MV2
2
P_O
3
P_M
4
P_T
5
P_S
6
P_R
7
AHS1
8
N
9
N
10
N
11
N
12
N
13
N
14
N
15
AHS2
16
E
1
12V
2
B1
3
A1
4
E1
5
A
6
B
7
E
8
H1
9
H2
10
CN20
NC
PWM
GND
FG
E
Y
CN4
M2
M1
X
CN6
CN12
PF
GND
C1
CN16
H1
L1
H2
L2
C2
CN38
C3
H3
L3
EVU
SG
Wire controller
B1
12V
E1
A1
A
E
B
CN37
4
CN19
Summary of Contents for DA-HP-16-230
Page 47: ......
