Takagi T-K3 User Manual

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• If the TM-RE30 or the TM-RE10 remote controller (optional) has to be connected to the
“MASTER” unit. If the TM-RE30 or the TM-RE10 is connected to a “SLAVE” unit,
it will only
control that particular individual “SLAVE” unit and will not control the Easy Link system as a
whole.
PUMP CONNECTION
The T-K3/T-K3-Pro can be used to control a recirculation
pump. Proper pump control helps to preserve the life of the
system and saves energy as well: The T-K3/T-K3-Pro pump
control port is a “normally open" dry contact, and therefore
needs additional components to properly control a
recirculation pump. To control a recirculation pump, connect
the pump to the “Pump” connector in the T-K3/T-K3-Pro as
shown in the diagram to the right. (In an Easy Link system,
connect the pump ONLY to the “MASTER” unit.) The pump
is to be connected using suitable relays shown in the
diagram below. Please make sure the relays are properly
rated for the recirculation pump.
Using the T-K3/T-K3-Pro’s internal thermistors as a temperature
control, the recirculation pump will only turn on when recirculation
is needed.
• The TM-RE30 or TM-RE10 (optional remote controller) is not required for
the Easy Link system.
• If running the Easy Link system without the TM-RE30 or the TM-RE10,
please make sure the dipswitch settings for the temperature, outdoor, and
direct vent settings on ALL the units are set to the same settings.
Otherwise, the units may not operate properly.
• If the TM-RE30 or the TM-RE10 is used, the temperature on all the units in
the system will automatically be set to the same temperature that is set on
the remote. However, even with the remote, the outdoor and direct vent
dipswitch settings still need to be set to the same settings on all the units.
MASTE
R
unit
SLAVE unit
M
A
S
T
E
R
S
L
A
V
E
O
U
T
M
S
T
OFF
ON
D
I
R
E
O
U
T
T
M
P
3
T
M
P
2
T
M
P
1
1
2
3
4
5
6
Communication cable
S
L
A
V
E
I
N
Connectors
Dipswitch
M
A
S
T
E
R
S
L
A
V
E
O
U
T
M
S
T
OFF
ON
D
I
R
E
O
U
T
T
M
P
3
T
M
P
2
T
M
P
1
1
2
3
4
5
6
S
L
A
V
E
I
N
Connectors
Dipswitch
Remote
Controller
These components are not included
with Takagi water heaters and are
external to the unit. They must be
acquired separately.
Connect to this “Pump” connector.
Wrong connection
between the
“SLAVE”
unit and the TM-RE30
(or TM-RE10)
CAUTION
In an Easy Link system, the pump must be connected
to the “Pump” connector in the “MASTER” unit only.
If the pump is connected to any of the “SLAVE” units,
the pump will not work.

Takagi T-K3 Specifications

General

Type	Tankless
Installation Type	Indoor
Maximum BTU Input	199, 000 BTU/h
Gas Connection Size	3/4"
Vent Size	3"
Hot Water Flow Rate (at 35°C rise)	6.6 GPM
Maximum Input	199, 000 BTU/h