Install Instructions

Installation
28Page
Thedarksquaresindicatethedirection
thedipswitchesshouldbesetto.
4.BetweenthePARENTandtheCHILD1units
Connectthe“PARENTconnector”ofthe“PARENT”unittothe“[1]connector”ofthe“CHILD1”
unit.
5.BetweentheCHILD1andtheCHILD2units
Connectthe“[2]connector”of the“CHILD1”unittothe“[1]connector”ofthe“CHILD2”unit.
6.BetweentheCHILD2andtheCHILD3units
Connectthe“[2]connector”of the“CHILD2”unittothe“[1]connector”ofthe“CHILD3”unit.
7.Makesurethe“3digit7seg.LED”ofalltheunits’computerboardsdisplaytheunit#.The
numberingsystemautomaticallyallocatestheunit#toeachwaterheaterin
theEasyLinksystem,
inaccordancewiththetablebelow.

Parentunit Unit#:1
Childunits Unit#:2,3and4
(A)520(TH2)Computerboard
(B)Basicdiagramofconnectionsamongthe520(TH2)models.
Rightbankof
dipswitches
Leftbankof
dipswitches
Whensettingaunittoa
“PARENT”unit,adjust
dipswitchNo.10onthe
rightbankof
dipswitchesonly
(
seedia
g
ram
)
.
EasyLinkconnectors
arenexttothe
com
p
uterboard.
3digit7Seg.LED
CHILD3unit
PARENT unit
CHILD1unit
CHILD2unit
Connectors
P
A
R
E
N
T
2
1
2
1
Communication cable
Connectors
P
A
R
E
N
T
2
1
2
1
O
F
F
O
N
1
2
3
4
5
6
7
8
Right bank
of Dipswitches
O
F
F
O
N
9
1
0
Connectors
P
A
R
E
N
T
2
1
2
1
Connectors
P
A
R
E
N
T
2
1
2
1
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
9
1
0
O
F
F
O
N
1
2
3
4
5
6
7
8
Right bank
of Dipswitches
O
F
F
O
N
9
1
0
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
9
1
0
O
F
F
O
N
1
2
3
4
5
6
7
8
Right bank
of Dipswitches
O
F
F
O
N
9
1
0
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
9
1
0
O
F
F
O
N
1
2
3
4
5
6
7
8
Right bank
of Dipswitches
O
F
F
O
N
9
1
0
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
9
1
0