Takagi T‐KJr2‐IN Installation Manual And Owner's Manual page 45

Gas tankless on‐demand water heater
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Computer 
board 
Assembly 
Water way assembly 
T‐KJr2‐IN/OS 
4 6 3
4 5 3
4 1 3
4 5 2
4 5 0
4 1 4
4 1 2
0 6 3
4 0 1
4 1 4
B
C
4 5 1
1 5 3
1 5 4
0 5 3
1 5 2
Exhaust section (OS model) 
T‐KJr2‐IN/OS &
T‐K4‐IN/OS 
7 1 0
7 0 8
1 0 3
4 0 2
7 1 9
4 0 8
T‐K4‐IN/OS
4 6 3
4 1 3
4 5 2
4 5 0
4 1 2
0 6 3
4 1 4
C
4 5 1
4 0 1
4 5 5
4 1 0
Water outlet section
45
7 0 1
1 0 3
7 1 7
7 1 8
7 0 7
7 0 9
4 0 2
7 1 4
4 0 7
4 5 3
4 1 4
4 0 1
4 5 1
B
4 5 8
C
4 5 6
4 6 0
4 0 9
4 5 4
4 0 8
0 6 4
 
Page
 Components Diagram 
T‐D2‐IN/OS 
7 0 1
7 1 6
7 0 9
7 1 9
T‐D2‐IN/OS
4 6 3
4 1 3
4 5 2
4 5 0
4 1 4
4 1 2
0 6 3
B
4 1 4
4 5 4
C
4 1 1
4 5 9
4 0 3
4 6 2
Bypass 
section 
4 6 0
4 5 6
4 6 0
4 5 6
4 0 2
B
4 0 4
4 6 1
4 0 6
4 5 7
4 5 8
0 5 2
4 0 5
4 5 4
4 1 5
4 0 7
0 6 4
Water inlet section
7 0 7
7 1 0
7 0 8
7 1 5
4 5 3
4 0 1

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