Manual

- 28 -
An individual cut-off switch is recommended for each unit in a multi-unit system for the purpose
of maintenance.
Multi-Unit System Connection Diagram
Multi-Unit Controller (9007675005 (TM-MC01)) and Temperature Remote Controller
(9007603005 (TM-RE30)) wiring:
 The above connection diagram is an example of how to connect 4 water heaters together in
a Multi-Unit System. Up to 10 water heaters can be connected in this fashion.
 Make sure the “7-seg LED” of all the units’ computer boards display the unit #. The Multi-
Unit controller automatically allocates the unit # (1 to 10) to each water heater that is part of
the Multi-unit system.
 The dark squares indicate the direction the dipswitches should be set to.
Please refer to the Multi-Unit Controller manual for further instructions of the Multi-Unit system.
.
The Comunication Cables are included with the 910 (T-M50). The
Cables use 18 gage wire and can be up to 250 ft. long all together.
Easy-Link / Multi-unit
System connectors are
on each unit’s
computer board
7-Seg LED
Lower bank of
dipswitches
Upper bank of
dipswitches
This lam
p
will flash when the unit is allowed the o
p
eration.
Communication cable
P
A
R
E
N
T
P
A
R
E
N
T
P
A
R
E
N
T
P
A
R
E
N
T
OFF
ON
1
2
3
4
5
6
7
8
Lower bank of Dipswitch
OFF
ON
1
2
3
4
5
6
7
8
Lower bank of Dipswitch
OFF
ON
1
2
3
4
5
6
7
8
Lower bank of Dipswitch
OFF
ON
1
2
3
4
5
6
7
8
Lower bank of Dipswitch
11
22
11
22
11
22
11
22
Connectors Connectors Connectors
Connectors
Unit 1 Unit2 Unit3 Unit4
9007603005
(TM
-
RE30)
9007675005
(TM
-
MC01)