ECS Upgrade for SW Double Wall Heaters, Kits 27035, 27036, 27037
Technical Instruction Document TID-0142_0A
12/30/2014 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, New York 10913 • Phone: 800-526-0288 Page 2 of 24
1. INTRODUCTION ......................................................................................................................... 3
1.1 Safety Precautions ............................................................................................................... 3
1.2 Tools & Supplies Required ................................................................................................... 4
1.3 Upgrade Kit Contents ........................................................................................................... 4
2. EQUIPMENT ISOLATION AND REMOVAL PROCEDURES ...................................................... 4
2.1 Isolating Water Heater .......................................................................................................... 7
2.2 Draining Water Heater .......................................................................................................... 7
2.3 Removal Of Hot Water Outlet Piping .................................................................................... 7
2.4 Removal Of Items Connected To Heater Shell ..................................................................... 8
2.5 Installation Of ECS Components On Top Head Assembly .................................................... 8
2.5.1 Thermocouple & Circulator Installation For SWDW Heaters – Brazed Fittings ............. 8
2.5.2 Thermocouple & Circulator Installation For SWDW Heaters – Compression Fittings . 12
2.5.3 Temperature Controller Replacement ........................................................................ 13
2.5.4 Setpoint Temperature Adjustment ............................................................................. 13
2.5.5 Wiring the ECS Control Box for the Circulator and Temperature Control ................... 15
3. POST INSTALLATION CONNECTIONS AND ADJUSTMENTS ............................................... 18
3.1 Input and Output Water Heater Connections ...................................................................... 18
3.2 Adjustments ....................................................................................................................... 18
4. APPENDICES ............................................................................................................................ 21
4.1 APPENDIX A: 8" SWDW ECS RECIRC. LOOP UPGRADE ............................................... 21
4.2 APPENDIX B: 10" SWDW ECS RECIRC. LOOP UPGRADE ............................................. 22
4.3 APPENDIX C: 12" SWDW ECS RECIRC. LOOP UPGRADE ............................................. 23
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