Takagi T-K3 Service Manual

T-K3 Service Manual
Ver. 1.05
8
CONFI DENTIAL
6. Wiring diagram
Propor-
tional
Valve
3
9
53
73
GFI
G
BK
W
AC120V
Trans-
former
3A
G
Ground
IG
Elect rod
Heater
Freeze
protection
thermostat
Heater
Ground
BK
BK
MV
SV3
SV2
SV1
LB
G
O
R
O.H.C.F
Hi-
limit
switch
BL
BL BL
BL
BL
BL
BL
W
Y
B
L
O
R
F
M
W White
R Red
BK Black
P Purple
LB Light blue
BL Blue
G Green
Y Yellow
O Orange
BR Brown
SLAVE IN
B
K
W
R
B
K
W
R
W
R
R
Flow
Sensor
W
Bypass
Valve
Flame rod
Ground
AFR rod
Y
G
O
Inlet
thermistor
Outlet
thermistor
Mixing
thermistor
Remote
Controller
Pump
MASTER
SLAVE OUT
BK
W
BK
W
654321
BK
BK
BK
BK
BK
BK
BK
BK
W
Flow
Adjust
ment
Valve
R R
R R
B
K
B
K
B
K
B
K
Multi-system
On line lamp
7 Seg LED
33
7
7
OFF
1234 56
OFF
P
P
P
P
B
R
B
R
B
R
B
R
MAX button
MIN button
Increase button
Decrease button
Burning lamp
Dip switch
Error call button
B
K
B
K
W
W
A1
A
B1
B2
C1
C2
C
D1
D2
E1
E2
E3
F
G
H1
H2
I
J1
J2
K
A2

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