A.O. Smith T-H3J-DV Manuel utilisateur

A.O. Smith Water Products

Company

500 Tennessee Waltz Parkway

Ashland City, TN 37015

Toll Free: 1-877-737-2840

240 (T-H3J), 340 (T-H3S)

and 540 (T-H3) Models

On-Demand Water Heater

Service Manual

2Page

240 (T-H3J), 340 (T-H3S) and 540 (T-H3) models Service Manial

Ver. 1.00

CONFIDENTIAL

Table of Contents

1. Specifications....................................................................................................................

2. Exterior view.....................................................................................................................

3. Interior view.......................................................................................................................

4. List of main components in the interior view...................................................................

5. Schemac diagram............................................................................................................

6. Wiring diagram.................................................................................................................

7. Wiring diagram checkpoints for diagnosis........................................................................

8. (A) Resistance values of the temperature thermistors.....................................................

8. (B) Resistance values of the temperature exhaust thermistors........................................

9. Operaonal ow chart......................................................................................................

10. Component specicaons................................................................................................

11. Fault Analysis & Specicaons.........................................................................................

12. Controls and sengs........................................................................................................

13. Components diagrams......................................................................................................

14. Parts list............................................................................................................................

15. Revisions...........................................................................................................................

104

3Page

240 (T-H3J), 340 (T-H3S) and 540 (T-H3) models Service Manial

Ver. 1.00

CONFIDENTIAL

1. Specifications

Model 240

Indoor

(T-H3J-DV)

240

Outdoor

(T-H3J-OS)

340

Indoor

(T-H3S-DV)

340

Outdoor

(T-H3S-OS)

540

Indoor

(T-H3-DV)

540

Outdoor

(T-H3-OS)

Dimensions inch H 22.4 x W 17.7 x D 10.7

570 (H) x 450 (W) x 272 (D)

Weight lbs. (kg) 58 (26.3) 58 (26.2) 58 (26.3) 58 (26.2) 58 (26.8) 58 (26.9)

Combustion

INPUT

BTU/h

Max 160,000 180,000 199,000

Min Propane 13,000

Natural gas 15,000

Combustion

system

Installation

Power vent

Installation Direct-vent

Indoor Outdoor Direct-vent

Indoor Outdoor

Fan motor PWM turbo fan

Manifold

Pressure*

("W.C.)

Max Propane 2.2

Natural 1.9

Propane 2.2

Natural 2.0

Propane 2.6

Natural 2.4

Propane 2.7

Natural 2.4

Propane 3.2

Natural 2.8

Propane 3.2

Natural 2.9

Min Propane 0.6

Natural 0.7

Propane 0.7

Natural 0.7

Propane 0.6

Natural 0.7

Propane 0.7

Natural 0.7

Propane 0.6

Natural 0.7

Propane 0.7

Natural 0.7

Water control

Flow rate GPM 0.5 to 6.6 0.5 to 8.0 0.5 to 10.0

Available

set

temperatures

°F

(°C)

100 to 140 (38 to 60)

default: 120 (49)

100 to 185 (38 to 85)

default: 120 (49)

Temperature

DIPswitch

settings

°F

(°C) 120 (49), 140 (60)

Bypass valve N/A Yes

Thermistors 2 thermistors (In, Out) 3 thermistors

(In, Out, Heat exchanger)

Operation

Temperature

control

Temperature controller : Direct Vent Indoor models

Temperature remote controller (TM-RE40) : Outdoor models

PCB model 240

Part # 319143-543 (EK186)

340

Part # 319143-544 (EK175)

540

Part # 319143-545 (EK176)

Indicators Stand-by LED

Power supply

control Surge absorber & Power ON-OFF switch

Features

Freeze

protection

Ceramic heaters (All models) and

Auto-firing system (Only 540 Direct Vent Indoor models (T-H3-DV) models)

Self-

combustion

improvement

Air-Fuel Ratio Detection System

Easy-Link

system N/A Yes (Up to 4 units)

Multiple-

system N/A Yes (Up to 20 units)

*The manifold pressure measurement is based on conditions without front cover.

4Page

240 (T-H3J), 340 (T-H3S) and 540 (T-H3) models Service Manial

Ver. 1.00

CONFIDENTIAL

2. Exterior view

Direct Vnet Indoor models

Side view

Front view

7-7/8" (199 mm)

GAS 5-1/8" (131 mm)

COLD 6-3/4" (172 mm)

HOT 5-1/2" (140 mm)

7-1/2" (189 mm)

GAS 5-7/8" (147 mm)

Condensate drain port

COLD 5/8" (17 mm)

HOT 4-3/4" (120 mm)

17-5/8" (448 mm)

6-1/4" (159 mm)

5-3/4" (147 mm)

120 VAC 3" (77 mm)

120 VAC 6-7/8" (174 mm)

∅

Drain port

Female

10-3/4" (272mm)

22-1/22" (570 mm)

Condensate drain port

4" (102 mm)

2-5/8" (68 mm)

Exhaust

Intake

Female

∅

7-7/8" (199 mm)

7-1/2" (189 mm)

7" (180 mm) 4" (101 mm)

17-3/4" (450 mm)

HOT 4-3/4" (120 mm)

6-3/4" (170 mm)

COLD 5/8" (17 mm)

GAS 5-3/4" (147 mm)

Condensate drain port

23-5/8" (600 mm)

2-5/8" (65 mm)

5-3/4" (147 mm)

11-1/4" (285 mm)

1/2 (13 mm)

GAS 5-1/8" (131 mm)

HOT 5-1/2" (140 mm)

COLD 6-3/4" (172 mm)

Condensate drain port

6-1/4" (159mm)

4" (102 mm)

24-7/8" (631 mm)

120 VAC 3" (77 mm)

Drain port 6" (152 mm)

120 VAC 6-7/8" (174 mm)

Bottom view Top view

5Page

240 (T-H3J), 340 (T-H3S) and 540 (T-H3) models Service Manial

Ver. 1.00

CONFIDENTIAL

Outdoor models

Side view

Front view

17-5/8" (448 mm)

6-1/4" (159 mm) COLD 5/8" (17 mm)

120 VAC 3" (77 mm)

HOT 5-1/2" (140 mm)

HOT 4-3/4" (120 mm) 7-1/2" (189 mm)

Condensate drain port

GAS 5-1/8" (131 mm)

COLD 6-3/4" (172 mm)

7-7/8" (199 mm)

Drain port

7-1/2" (189 mm)

10-3/4" (272 mm)

22-1/2" (570 mm)

120 VAC

Condensate drain port

7-7/8" (199 mm)

Condensate drain port

11" (281 mm)

1/2" (13 mm)

120 VAC 3" (77 mm)

GAS (131 mm)

HOT (140 mm)

COLD 6-3/4" (172 mm)

Condensate drain port

COLD 5/8" (17 mm)

GAS 5-3/4" (147 mm)

HOT 4-3/4" (120 mm)

6-3/4" (170 mm)

1-1/2" (37 mm)

11-1/4" (285 mm)

120 VAC 6-1/4" (159 mm)

17-3/4" (450 mm)

7" (180 mm)

23-5/8" (600 mm)

24-7/8" (631 mm)

3-5/8" (92 mm)

4-1/2" (114 mm)

Drain port 6" (152 mm)

Bottom view Top view

6Page

240 (T-H3J), 340 (T-H3S) and 540 (T-H3) models Service Manial

Ver. 1.00

CONFIDENTIAL

3. Interior view

240 Indoor (T-H3J-DV)

340 Indoor (T-H3S-DV)

REMOTE

CONTROLLER

OFF ON

AC120V

7Page

240 (T-H3J), 340 (T-H3S) and 540 (T-H3) models Service Manial

Ver. 1.00

CONFIDENTIAL

240 Outdoor (T-H3J-OS)

340 Outdoor (T-H3S-OS)

33 17

REMOTE

CONTROLLER

OFF ON

AC120V

8Page

240 (T-H3J), 340 (T-H3S) and 540 (T-H3) models Service Manial

Ver. 1.00

CONFIDENTIAL

540 Indoor (T-H3-DV)

23 24

33 17

AC120V

REMOTE

CONTROLLER

OFF ON

9Page

240 (T-H3J), 340 (T-H3S) and 540 (T-H3) models Service Manial

Ver. 1.00

CONFIDENTIAL

540 Outdoor (T-H3-OS)

REMOTE

CONTROLLER

AC120V

OFF ON

10 Page

240 (T-H3J), 340 (T-H3S) and 540 (T-H3) models Service Manial

Ver. 1.00

CONFIDENTIAL

4. List of main components in the interior view

No. Description

Items# in

components

diagram

Part #

240, 340 and

540 models

T-H3J, T-H3S and

T-H3 models

1. Case assembly

Indoor

models 001

N/A EK159

Outdoor

models N/A EK164

Manifold

assembly with

gas valve

assembly

LP model

102

319143-515 EK181

NA model 319143-516 EK182

3. Computer board 701

319143-543

(240 models)

EK186

(T-H3J models)

319143-544

(340 models)

EK175

(T-H3S models)

319143-545

(540 models)

EK176

(T-H3 models)

4. Igniter 711 319143-479 EK153

5. Gas valve

assembly

LP model Included in

#102

319143-515 EK181

NA model 319143-516 EK182

6. Water inlet 404 319143-193 EKK1U

7. Water outlet 409 319143-530 EK208

8. Inlet thermistor 407

319143-214

(240/340 models)

EKK4J

(T-H3J/T-H3S models)

319143-465

(540 models)

EK137

(T-H3 models)

9. Outlet thermistor 408

319143-529

(240/340 models)

EK207

(T-H3J/T-H3S models)

319143-190

(540 models)

EKK1A

(T-H3 models)

10. Overheat cut-off fuse 413 319143-149 EK333

11. Burner assembly 101 319143-514 EK192

12. Hi-limit switch 412

319143-228

(240/340 models)

EM212

(T-H3J/T-H3S models)

319143-095

(540 models)

EKN34

(T-H3 models)

Ce manuel convient aux modèles suivants

Table des matières

Autres manuels A.O. Smith Chauffe-eau

A.O. Smith

A.O. Smith DSE-120-24 Mode d’emploi

A.O. Smith

A.O. Smith Dura-Power DSE-5 Manuel utilisateur

A.O. Smith

A.O. Smith TE-35 Manuel utilisateur

A.O. Smith

A.O. Smith 28 30 50 60 Supplément

A.O. Smith

A.O. Smith DIRECT VENTED GAS MODELS Manuel utilisateur

A.O. Smith

A.O. Smith Water Heater 520 Direct Vent Indoor Manuel utilisateur

A.O. Smith

A.O. Smith 400A Guide d'application

A.O. Smith

A.O. Smith BTH-120 through BTH-500 Manuel utilisateur

A.O. Smith

A.O. Smith High Efficiency 100 series Manuel utilisateur

A.O. Smith

A.O. Smith LTE 66D Manuel utilisateur

A.O. Smith

A.O. Smith PGCL-40 Manuel utilisateur

A.O. Smith

A.O. Smith FDV Manuel utilisateur

A.O. Smith

A.O. Smith ProMax Direct-Vent GDV-50 Manuel utilisateur

A.O. Smith

A.O. Smith CAHP-120C Series Manuel utilisateur

A.O. Smith

A.O. Smith EWJH 15 Manuel utilisateur

A.O. Smith

A.O. Smith ATX-199 Manuel utilisateur

A.O. Smith

A.O. Smith Duraclad Lime Tamer Manuel utilisateur

A.O. Smith

A.O. Smith CIRREX Manuel utilisateur

A.O. Smith

A.O. Smith 104 Series Manuel utilisateur

A.O. Smith

A.O. Smith EWH-10A2 Manuel utilisateur

A.O. Smith

A.O. Smith TWI 35-130 Manuel utilisateur

A.O. Smith

A.O. Smith RESIDENTIAL GAS WATER HEATER Manuel utilisateur

A.O. Smith

A.O. Smith 160M Manuel utilisateur

A.O. Smith

A.O. Smith BTP-140-140 Manuel utilisateur

Manuels Chauffe-eau populaires d'autres marques

Kenmore

Kenmore 153.582400 Manuel utilisateur

Applimo

Applimo Edel AIR Manuel utilisateur

STIEBEL ELTRON

STIEBEL ELTRON Eltronom SHU 5 S Manuel utilisateur

clage

clage E-Mini Series Manuel utilisateur

Toyotomi

Toyotomi Oil Miser OM-180 Manuel utilisateur

Bradford White

Bradford White EF Series Manuel utilisateur

Eccotemp

Eccotemp 40-H Manuel utilisateur

Dimplex

Dimplex ECSd125-580 Mode d’emploi

Dux

Dux 32FCR6N Manuel utilisateur

Toyotomi

Toyotomi Oil Miser OM-148 (Type D) Guide de dépannage

Noritz

Noritz N-132M Manuel d'instructions

TESY

TESY GCV7/4S 10047 Fiche technique

Koryo

Koryo KWHZF15Y Manuel utilisateur

Pentair

Pentair PSC-14-4-02 Manuel utilisateur

GE 40M06AAG Instructions de montage

Thermor

Thermor AEROMAX SPLIT 2 Manuel utilisateur

American Hometec

American Hometec AHQ-B03X Manuel utilisateur

PVI

PVI MAXIM Manuel utilisateur