Table Of Contents - Lochinvar TTW Series Installation, Commissioning And Maintenance Instructions

Table of Contents

1.0 INTRODUCTION ........................................................................................................................................................................................ 6
1.1 ANCILLARY OPTIONS: ......................................................................................................................................................................... 6
2.0 SAFETY GUIDELINES .............................................................................................................................................................................. 7
2.1 GENERAL DESCRIPTION OF SAFETY SYMBOLS USED.................................................................................................................. 7
2.2 WHAT TO DO IF YOU SMELL GAS ...................................................................................................................................................... 8
3.0 PRINCIPLE PARTS ................................................................................................................................................................................... 8
3.1 CASING .................................................................................................................................................................................................. 8
3.2 ELECTRICAL ......................................................................................................................................................................................... 9
3.3 GAS TRAIN AND AIR INLET ................................................................................................................................................................. 9
4.0 TECHNICAL DATA .................................................................................................................................................................................. 10
4.1.1 TECHNICAL DATA........................................................................................................................................................................... 10
5.0 DIMENSIONS AND CLEARANCE .......................................................................................................................................................... 11
5.1 DIMENSIONS ....................................................................................................................................................................................... 11
5.1.1 DIMENSIONS TTW410 .................................................................................................................................................................... 11
5.1.2 DIMENSIONS TTW580 .................................................................................................................................................................... 11
5.1.3 MINIMUM CLEARANCES ................................................................................................................................................................ 11
5.2 WATER HEATER CONNECTIONS ..................................................................................................................................................... 12
5.2.1 WATER HEATER CONNECTIONS ................................................................................................................................................. 12
5.2.2 CONNECTIONS AND CONNECTION SIZES ................................................................................................................................. 12
5.3 CONDENSATE DRAIN CONNECTION ............................................................................................................................................... 13
6.0 GENERAL REQUIREMENTS .................................................................................................................................................................. 14
6.1 RELATED DOCUMENTS ..................................................................................................................................................................... 15
7.0 WATER QUALITY ................................................................................................................................................................................... 16
7.1 WATER CHEMISTRY .......................................................................................................................................................................... 16
8.0 LOCATION ............................................................................................................................................................................................... 16
8.1 PLANT ROOM REQUIREMENTS ....................................................................................................................................................... 16
8.2 GENERAL REQUIREMENTS .............................................................................................................................................................. 16
8.3 UNPACKING AND LEVELLING THE WATER HEATER .................................................................................................................... 17
8.4 CLEARANCES ..................................................................................................................................................................................... 17
9.0 GAS SUPPLY .......................................................................................................................................................................................... 18
9.1 SERVICE PIPES .................................................................................................................................................................................. 18
9.2 METERS ............................................................................................................................................................................................... 18
9.3 GAS SUPPLY PIPES ........................................................................................................................................................................... 18
9.4 BOOSTED SUPPLIES ......................................................................................................................................................................... 18
9.5 PLANT-ROOM CONTROL VALVE ...................................................................................................................................................... 18
9.6 EQUIPMENT GAS SYSTEM LEAK CHECK ....................................................................................................................................... 18
10.0 FLUE SYSTEM ........................................................................................................................................................................................ 19
10.1 FLUE SYSTEM GENERAL REQUIREMENTS .................................................................................................................................... 19
10.2 FLUE TERMINAL POSITION ............................................................................................................................................................... 20
10.3 FLUE GAS AND AIR SUPPLY SYSTEM ............................................................................................................................................. 20
10.4 APPROVED FLUE SYSTEM ............................................................................................................................................................... 20
10.5 INSTALLATION PRECAUTIONS ......................................................................................................................................................... 20
10.6 WATER HEATER CATEGORIES - TYPES OF FLUE GAS SYSTEMS. ............................................................................................ 21
10.7 TYPE C CERTIFIED .......................................................................................................................................................................... 23
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10.8 TTW AIR INLET / FLUE GAS OUTLET CALCULATION EXAMPLES ................................................................................................ 23
10.9 TYPE C (TWIN PIPE) FLUE SYSTEMS ............................................................................................................................................ 24
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10.9.1 EXAMPLE A: TWIN PIPE SYSTEM ................................................................................................................................................. 25
10.10 GENERAL TWIN-PIPE INSTALLATION GUIDELINES ....................................................................................................................... 26
10.11 TYPE B (CONVENTIONAL FLUE WITH FAN ASSISTANCE) ......................................................................................................... 29
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10.11.1 EXAMPLE B: SINGLE PIPE SYSTEM FOR FLUE GAS OUTLET ONLY ...................................................................................... 30
10.12 SEPARATE AIR SUPPLY AND FLUE TERMINAL FOR A PITCHED ROOF ..................................................................................... 31
10.13 COMMON FLUE SYSTEMS ................................................................................................................................................................ 32
10.14 CONDENSATE DRAIN ........................................................................................................................................................................ 32
11.0 AIR SUPPLY ............................................................................................................................................................................................ 32
11.1 AIR SUPPLY THROUGH HUMID AREAS ........................................................................................................................................... 32
11.2 PIPE HEIGHTS AND MUTUAL DISTANCES ON A FLAT ROOF. ..................................................................................................... 32
11.3 COMBUSTION VENTILATION ............................................................................................................................................................ 33
11.4 COOLING VENTILATION .................................................................................................................................................................... 33
12.0 WATER CONNECTIONS ......................................................................................................................................................................... 34
12.1 GENERAL............................................................................................................................................................................................. 34
12.2 UNVENTED SYSTEM ARRANGEMENT............................................................................................................................................. 34
12.2.1 EXPANSION VESSEL SIZING ........................................................................................................................................................ 34
12.2.2 COEFFICIENT OF EXPANSION OF WATER AT 3.5 BAR INLET PRESSURE ............................................................................ 34
12.3 CIRCULATING PUMPS ....................................................................................................................................................................... 35
12.4 PRIMARY PIPEWORK LOOP SIZING ................................................................................................................................................ 35
12.4.1 CIRCULATION REQUIREMENTS ................................................................................................................................................... 35
12.4.2 PIPEWORK HEADER SIZES FOR COMMON INSTALLATIONS .................................................................................................. 36
12.4.3 PIPEWORK SCHEMATICS ............................................................................................................................................................. 36
12.5 PRESSURE RELIEF VALVE ............................................................................................................................................................... 37
12.6 ANTI-GRAVITY LOOP ......................................................................................................................................................................... 37
12.7 AUTOMATIC AIR VENT ....................................................................................................................................................................... 37
12.8 FROST PROTECTION ......................................................................................................................................................................... 37
12.9 SYSTEM FLUSHING............................................................................................................................................................................ 37
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