A.O. Smith TWI 35-130 Page 5 Installation, User And Service Manual Download

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Instruction manual TWI 35-130 G/TWI 45-190 G

Table of content

Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7

1.1 About the device - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7

1.2 What to do when you smell gas - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7

1.3 Regulations - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -7

1.4 Target groups - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 8

1.5 Maintenance - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 8

1.6 Packaging material- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 8

1.7 Disposal- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 8

1.8 Notation system - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 9

1.9 Overview of this document - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 9

Operation of the device- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 11

2.1 Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 11

2.2 General operation of the device - - - - - - - - - - - - - - - - - - - - - - - - - - - - 11

2.3 Heating cycle of the device- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 12

2.4 Security of the device- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 12

2.5 Safety of the installation- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 14

Installation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 15

3.1 Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 15

3.2 Packaging- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 15

3.3 Ambient conditions- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 15

3.4 Technical specifications - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 18

3.5 Connections diagram- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 20

3.6 Water connections unvented - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 21

3.7 Water connections vented - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 22

3.8 Gas connection - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 22

3.9 Air supply and flue gas discharge - - - - - - - - - - - - - - - - - - - - - - - - - - - - 22

3.10 Electrical connection - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 28

3.11 Check and adjust the CO

-value - - - - - - - - - - - - - - - - - - - - - - - - - - 30

Conversion to another gas category - - - - - - - - - - - - - - - - - - - - - - - 34

Fill - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 35

5.1 Fill the device - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 36

Drain - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 37

6.1 Drain unvented installations - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 38

6.1 Drain vented installations - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 38

Start up - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 39

7.1 Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 39

7.2 Start up- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 39

7.3 Heating cycle of the device- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 39

Shut down - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 41

8.1 Introduction- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 41

8.2 Shut down the device for a short time - - - - - - - - - - - - - - - - - - - - - - 41

8.3 Electrically isolate the device - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 41

8.4 Shut down the device for a long period- - - - - - - - - - - - - - - - - - - - - - 41

Errors - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 43

9.1 Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 43

9.2 Troubleshooting table for general errors- - - - - - - - - - - - - - - - - - - - - - - - - 44

9.3 Troubleshooting table for errors on the control- - - - - - - - - - - - - - - - - - - - - - 46

Maintenance - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 49

10.1 Introduction- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 49

10.2 Prepare maintenance- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 49

10.3 Water-side maintenance- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 50

10.4 Gas-side maintenance - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 50

10.5 Complete maintenance- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 50

Summary of Contents for TWI 35-130

Page 1: ...0311935 Innovation has a name Installation User and Service Manual Condensing Stainless Steel Water Heater TWI 35 130 45 190 TWI 4115 Changes Reserved...

Page 2: ...your installer A O Smith UK Unit B8 Amstrong Mall Southwood Business Park Farnborough Hampshire GU14 0NR www aosmith co uk A O Smith Water Heaters is a trading name of Advance Services Sales Ltd Reg...

Page 3: ...al and in conformity with the General Terms and Conditions as filed with the Chamber of Commerce For further information see the General Terms and Conditions These are obtainable from us free of charg...

Page 4: ...4 Instruction manual TWI 35 130 G TWI 45 190 G...

Page 5: ...Water connections vented 22 3 8 Gas connection 22 3 9 Air supply and flue gas discharge 22 3 10 Electrical connection 28 3 11 Check and adjust the CO2 value 30 4 Conversion to another gas category 34...

Page 6: ...11 2 Warranty tank 53 11 3 Conditions of installation and use 54 11 4 Exclusions 54 11 5 Extent of the warranty 54 11 6 Claims 54 11 7 Obligations of A O Smith 54 12 Annex 55 12 1 Introduction 55 12 2...

Page 7: ...ructions may lead to personal injuries and damage to the device Warning In case of smelling gas No open fire No smoking Avoid sparking Do not use any electric switches including telephone plug or bell...

Page 8: ...asis of this check Remark Regular maintenance lengthens the life of the device Both the end user and the service and maintenance engineer are responsible for regular maintenance They shall make clear...

Page 9: ...rvice and maintenance engineer It describes the errors of the device These errors are shown on the display A table gives the possible cause and solution However an end user can also find additional in...

Page 10: ...manual TWI 35 130 G TWI 45 190 G Introduction 1 Chapter Target groups Description 11 Warranty certificate This chapter contains the terms of warranty 12 Annexes This chapter contains the electrical c...

Page 11: ...lating layer 3 Air pressure switch 4 Burner 5 Venturi 6 Air supply pipe 7 Gas control 8 Cover plate 9 Hot surface igniter 10 Fan 11 Thermostat 12 Hot water outlet 13 Heat exchanger 14 Tank 15 Combusti...

Page 12: ...wn through the heat exchanger along the water This gradually cools down the flue gasses As the cooled down flue gasses are finally led along the cold water at the bottom of the tank as well the flue g...

Page 13: ...ion takes place This is called pre purging 2 4 5 Air pressure switch The air pressure switch guarantees discharge of flue gasses and supply of air during pre purging and operation of the device The ai...

Page 14: ...sorbs the overpressure The height of the water tank determines the maximum operating pressure in the tank The maximum operating pressure is 8 bars The installation shall also be equipped with an expan...

Page 15: ...in order to prevent damaging the device You can best unpack the device when it is close to or on its definite place Caution Move the device only standing up Make sure not to damage the device after u...

Page 16: ...cification for weight in connection with the maximum floor loading 3 3 3 Water composition The device is designed for heating drinking water The drinking water shall comply with the regulations for dr...

Page 17: ...floors in case of leakage of the tank and or connections If this is the case install the device near a floor discharge or in a metal drip tray of the right size A drip tray shall have a solid discharg...

Page 18: ...valve connection 155 155 S Height T P valve connection 1040 1395 W Height condensation drainage 100 100 1 Cold water supply connection 1 NPT 1 NPT 2 Hot water outlet connection 1 NPT 1 NPT 3 Gas cont...

Page 19: ...on kg h 2 6 3 5 Emissions of Nitrogen Oxides NO2 mg kWh GCV 51 70 Based on 1013 15 mbar and 15 C Description Unit TWI 35 130 TWI 45 190 Volume l 129 189 Empty weight kg 70 82 Maximum operating pressur...

Page 20: ...alve 10 manual gas valve obligatory 11 service valve 12 temperature meter optional 13 condensation drainage 14 draw off points 15 expansion valve obligatory 16 expansion vessel obligatory 17 three way...

Page 21: ...See C in the connections diagram 3 5 Connections diagram If you want to have hot water available immediately you can install a circulation pump at the draw off points This is more comfortable and avo...

Page 22: ...water discharge pipe Attention All connections downstream the siphon shall be condensation resistant Warning The installation shall be carried out by a recognised installation engineer in accordance w...

Page 23: ...Instruction manual TWI 35 130 G TWI 45 190 G 23 Device types IMD 0531 R0...

Page 24: ...length When using less than the maximum pipe length it is still not allowed to use more than the maximum number of bends All this will be explained using an example Practical example of concentric fl...

Page 25: ...minal C13 Subject Description Wall flue terminal set 1x Wall flue termi nal incl wall plate clamping strip 1x Pipe 500 mm 1x Bend 90 Item no TWI 35 130 0302 515 1 TWI 45 190 0302 515 1 Construction Co...

Page 26: ...shall be carried out for compliance of the configuration with the requirements stated in the table 3 Installation Subject Description Roof flue terminal set 1x Roof flue terminal incl clamping strip 1...

Page 27: ...material parts 1 2 3 4 and 5 The length of the transition piece need not be taken into account The total number of used bends in the flue gas discharge and air supply is eight The bend in the transiti...

Page 28: ...ption indicated in the table 3 4 2 General and electrical data 3 10 2 Preparation Caution The device is phase sensitive It is absolutely necessary to connect the phase L of the mains to the phase of t...

Page 29: ...k Legends A screws B cover plate C connector block D strain relief For preparation remove the cover plate B from the electricity part by loosening the two screws A Remark Consult the electrical circui...

Page 30: ...1 Connect phase L zero Z and earth of the power cable to the connector C 2 Mount the power cable into the strain relief D 3 Connect the power cable to the main switch 4 Remount the cover plate 3 10 4...

Page 31: ...he concentric venturi tube 2 Open the gas supply and bleed the air from the gas system 3 Switch on the voltage of the device using the main switch of the device 4 Turn the thermostat clockwise until t...

Page 32: ...iation by turning the CO2 setting screw 4 CO2 setting screw clockwise CO2 value decreases CO2 setting screw counterclockwise CO2 value increases 4 Put back the cap 3 on the CO2 setting screw 4 5 Remou...

Page 33: ...Instruction manual TWI 35 130 G TWI 45 190 G 33 4 Conversion to another gas category Conversion to another gas category is not possible...

Page 34: ...34 Instruction manual TWI 35 130 G TWI 45 190 G 4 Conversion to another gas category...

Page 35: ...6 circulation pump optional 9 drain valve 10 manual gas valve obligatory 11 service valve 12 temperature meter optional 13 condensation drainage 14 draw off points 15 expansion valve obligatory 16 ex...

Page 36: ...might be that The water piping pressure is larger than the required 8 bars Mount a pressure reducing valve 1 after all The expansion valve of the protected cold supply setup is defective or incorrectl...

Page 37: ...6 circulation pump optional 9 drain valve 10 manual gas valve obligatory 11 service valve 12 temperature meter optional 13 condensation drainage 14 draw off points 15 expansion valve obligatory 16 exp...

Page 38: ...pe A 5 Connect the discharge hose to the drain valve 9 6 Open the drain valve 9 7 Aerate the device or installation allowing it to completely empty For some activities the device needs to be drained P...

Page 39: ...o remove any combustion gases still present Then the fan stops and heats the hot surface igniter for 35 seconds After this pre heating period the fan starts and the gas valve opens This blows the air...

Page 40: ...again three consecu tive times If this has not succeeded after three times the electronic control will temporarily switch off The control will automatically reset after an hour and the above mentioned...

Page 41: ...stopped purging 3 Electrically isolate the device by turning the main switch between the device and the electricity mains to the 0 position Drain the device when shutting it down for a longer period P...

Page 42: ...42 Instruction manual TWI 35 130 G TWI 45 190 G 8 Shut down...

Page 43: ...f the LED The different errors are divided into three groups SOFT LOCKOUT SL The control automatically resets after 60 minutes SOFT LOCKOUT HARD LOCKOUT SL3 The control automatically resets after 60 m...

Page 44: ...rning No open fire Warning Ventilate the area the device has been installed in Warning Immediately contact the installation engineer or the local gas company Water leakage Leaking water con nection th...

Page 45: ...nated burner Clean the burner 10 4 2 Clean the burner Contaminated air inlet filter Clean the air inlet filter 10 4 4 Cleaning the air inlet filter Symptom Cause Solution Remark Insufficient or no hot...

Page 46: ...lacing the required parts Air pressure switch does not close 1 Check if the fan is running 2 Check if the hoses are correctly mounted on the air pressure switch 3 Check the hoses on the air pressure s...

Page 47: ...perly connected See 12 2 Electrical circuit diagram 2 Check the cabling of the hot surface igniter 3 Check the voltage over the hot surface igniter This should be 115 VAC 4 Measure the resistance over...

Page 48: ...e 1 Check the cabling of the hot surface igniter 2 Replace the cabling if necessary The electronic control automatically resets after ionisation signal dissappears Contact the installation engineer in...

Page 49: ...ion Then draw off water to create a heat demand 4 Check if the heating cycle runs correctly 7 3 Heating cycle of the device 5 Check the CO2 value and adjust this if necessary 3 11 Check and adjust the...

Page 50: ...e and the siphon to avoid stoppage 10 4 1 Introduction Proceed as follows for gas side maintenance 1 Clean the burner 2 Clean the heat exchanger 3 Cleaning the air inlet filter 10 4 2 Clean the burner...

Page 51: ...an the filter by means of a vacuum cleaner or by rinsing 4 Put the filter back into the black housing 5 Mount the air supply hose back onto the condensation drainage I M D 0 7 1 9 R 0 Remark Check the...

Page 52: ...52 Instruction manual TWI 35 130 G TWI 45 190 G Maintenance 10...

Page 53: ...owing through the boiler or left in it The warranty referred to in Articles 1 and 2 only apply if the following conditions are met a The boiler is installed according to the installation instructions...

Page 54: ...rehouse delivery of the boiler to be replaced or any parts thereof A O Smith shall not bear the transport labour installation and other costs in connection with the replacement A claim based on the wa...

Page 55: ...Instruction manual TWI 35 130 G TWI 45 190 G 55 This annex contains The Electrical circuit diagram Legends 12 1 Introduction 12 Annex...

Page 56: ...56 Instruction manual TWI 35 130 G TWI 45 190 G Annex 12 12 2 Electrical circuit diagram 0308447 1 brown 2 blue 3 green 4 black 5 white 6 grey beige...

Page 57: ...th N Zero L1 Phase COMPONENTS A Electronic control B Air pressure switch C Hot surface igniter D Temperature sensor ECO E Thermostat board F Yellow LED G Thermostat H Red LED J Green LED K Gas control...

Page 58: ...58 Instruction manual TWI 35 130 G TWI 45 190 G Annex 12...

Page 59: ...ycle 12 security 12 types 9 17 dimensions 18 drain 37 E electrical circuit diagram 54 electrical connection 28 electrical connector block 29 error 43 F fan 13 fill 43 floor loading 16 G gas control 13...

Page 60: ...e interval 66 shut down short period 41 longer period 41 isolate 41 specifications 16 symbol installation engineer 8 service engineer 8 user 8 start up 39 T target groups 8 temperature sensor 12 trade...

Page 61: ...Instruction manual TWI 35 130 G TWI 45 190 G 61...

Page 62: ...62 Instruction manual TWI 35 130 G TWI 45 190 G...

Page 63: ...Instruction manual TWI 35 130 G TWI 45 190 G 63...

Page 64: ...64 Instruction manual TWI 35 130 G TWI 45 190 G 0311935 R0...

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