Maintenance Sheet

E. Components diagram / Parts list
120
705
053
062
706
703
068
704
705
716
Surge box
Computer board assembly
705
103
709
402
402
711
707
714
407
408
708
701
064
721
712
Case assembly
006
004
052
052
003
052
003
001
001
005
007
007
715
002
052
050
704
052
050
050
050
704
710
008
008
002
413
450
450
450
463
452
452
059
412
414
453
066
402
404
407406
405
460
456
458
461
052
415
058
454
457
052
D
408
410
409
415
058
454
455
052
C
401
401
To Water
inlet secon
D
C
458
462
414
451
451
414
052
To Water
outlet secon
Water way assembly
Water outlet secon
Water inlet secon
Built-in
temperature controller
(Indoor only)
722
721
065
Item
#
Part #
Description
110 U
310 U
AT-KJr3U/K5U
-IN/OS
001
N/A
N/A
EK596
EK597
Case assembly Indoor model
Outdoor model
002 N/A
N/A
EK598
EK599
Front cover Indoor model
Outdoor model
003
004
005
006
007
008
N/A
N/A
100074668
100074603
N/A
100074201
EK455
EK600
EK190
EKK4D
EK601
EM484
Bracket
Intake air port assembly
Junction box
Power supply cord assembly
Back guard panel
Overheat-cut-off fuse for combustion chamber
050
051
052
053
100074210
100074509
100074211
100074245
EW000
EW001
EW002
EW003
Truss screw M4×12 (W/Washer) SUS410
Truss screw M4×10 (W/Washer) SUS410
Truss screw M4×10 (Coated) SUS3
Truss screw M4x10 SUS
054
055
056
057
100074510
100074248
100074247
100074511
EW004
EW005
EW006
EW008
Hex head screw M4×12 (W/Washer) SUS3
Hex head screw M4x8 FEZN
Pan screw M4x10 FEZN
Pan Screw M3x10 SUS
058
059
060
061
062
100074512
100074272
100074514
100074244
100076450
EW009
EW00A
EW00B
EW00D
EW00E
Tapping screw M4x6 SUS3 Truss head
Tapping screw M3x6 SUS3 Pan head
Screw M3x6 SUS3 Binding head
Pan screw M4x8 MFZN
Tapping screw M4x14 SUS410 Truss head
064
065
066
067
068
N/A
N/A
N/A
100074385
N/A
EW016
EW018
EW02A
EKK31
EX014
Screw M3x6 BSNI Binding head
Pan screw M4x20 SUS410
Truss screw M4x8 SUS3
Tap tight screw M4x12 FEZN
Truss screw M4x10 MFZN3
Item
#
Part #
Description
110 U
310 U
AT-KJr3U/K5U
-IN/OS
101
102
100224092
100224093
EK554
EK555
Burner assembly
Manifold with gas valve assembly NA
103 100074606
100074228
EK109
EKK25
Fan motor for Indoor model
Fan motor for Outdoor model
104 100074466
N/A
EM381
EK140
Fan motor plate for Indoor model
Fan motor plate for Outdoor model
105
106
107
108
109
110
100076535
100224097
100224098
100224099
100224100
100076319
EKN58
EK559
EK560
EK561
EK562
EK462
Burner window
Rod holder gasket
Flame rod with AFR function
Igniter rod
Rod holder
Rod cap
111
112
113
100270556
100224102
100224103
EK602
EK564
EK565
Burner damper
Manifold gasket A
Manifold gasket B
114
115
116
117
100074227
100074528
100074235
100074234
EKK2D
EX019
EKK1E
EKK2Z
Pressure port
Combustion chamber tube
Gas inlet
Gas inlet ring
118
119
100224105
100224106
EK567
EK568
Burner gasket
Burner holder gasket
Item
#
Part #
Description
110 U
310 U
AT-KJr3U/
K5U
-IN/OS
120
121
122
100074360
N/A
100074369
EK436
EK603
EKJ59
Surge box plate
PCB fixing plate
Thermostat
130
131
100270585
100281157
EK604
EK592
LP Conversion kit
Manifold gasket
150
151
152
153
154
N/A
100074242
100074390
100074400
100074403
EK570
EK042
EKK3G
EKK53
EKK56
O-ring P18 NBR (Manifold)
O-ring P20 NBR (Black)
Silicon ring for Outdoor model
Rain protection plate in Exhaust chamber
for Outdoor model
Exhaust port for Outdoor model
401 100270557
100270558
EK605
EK606
Heat exchanger assembly for Indoor
for Outdoor
402
404
405
406
100074624
100074377
100074381
100074382
EK129
EKK1U
EKK2B
EKK2C
Flow adjustment valve / Flow sensor
Water inlet
Inlet drain plug
Inlet water filter
407 100074398 EKK4J Inlet thermistor for 110U, 310U
408 100074680 EK207 Outlet thermistor for 110U, 310U
409
410
100074627
100074264
EK104
EK239
Water outlet
Outlet drain plug
412 100074412 EM212 Hi-Limit switch for 110U, 310U
413
414
415
416
417
100074252
100074682
100074629
100270581
100224113
EX02A
EK209
EK105
EK609
EK577
Overheat-cut-off fuse for heat exchanger
Pipe heater
Inlet heater
Pipe inlet
Joint outlet
450
451
452
453
N/A
100074310
N/A
N/A
EK616
EK031
EK476
EK610
Fuse fixing plate 40
Heater fixing plate 16
Fuse fixing plate 18
Pipe heater fixing plate
454
455
456
457
100076303
100076305
100076306
100076307
EZM04
EZM06
EZM14
EZM15
O-ring P4 FKM
O-ring P6 FKM
O-ring P14 FKM
O-ring P15 FKM
458
460
461
100076308
100074290
100074410
EZM16
EKK24
EM192
O-ring P16 FKM
Fastener “14-22”
Fastener “16A”
462
463
100074389
100074250
EKK39
EKN50
Fastener “16-25A”
Silicon ring for Indoor model
701 100270582
100270583
EK611
EK612
Computer board for 110U
Computer board for 310U
703
704
100076100
100074601
100074323
EK280
EK146
EKK3C
Surge box
120 VAC wire for Indoor model
for Outdoor model
705
706
N/A
N/A
EK614
EK590
Switch wire
120 VAC Power ON-OFF switch
707
708
100074649
N/A
EK189
EK585
Remote controller wire for 110U, 310U
Gas valve wire
709
710
711
N/A
N/A
100074640
EK586
EW022
EK153
Flame rod wire
Cable strap
Igniter assembly
712
714
715
716
100074458
100074642
100074655
N/A
EM329
EK112
EK184
EK615
Computer board cover
Proportional gas valve wire
Rubber grommet for Indoor model
Surge box cover
721
722
100074660
N/A
EK173
EK588
Temperature controller
Controller fixing plate
153
154
103
401
103
054
118
053
105
106
112
708
401
150
117
116
121
062
114
701
102
119
107
152
151
057
062
062
067
062
055
056
052
055
111
113
061
110
711
711
714
053
053
057
060
109
115
054
053
108
104
122
122
104
053
053
052
709
101
053
414
453
066
066
Burner assembly
Manifold
assembly
Burner
assembly
Outdoor model
Indoor model
130
131
LP Conversion Kit
Indoor model
Outdoor model