© 2008 Aqua-Hot
®
375-D Hydronic Heating System Installation Manual Rev. A
table of Contents
Aqua-Hot 375-D Installation Manual
Introduction ............................................................................................................................................1
Section 1: Aqua-Hot Hydronic Heating System
Technical Information ...........................................................................................................................2
Section 2: Aqua-Hot Installation
Installing the Mounting Tray and the Aqua-Hot ..............................................................................5
Overall Aqua-Hot Dimensions ............................................................................................................6
Installing the Cable-Clamp Fittings .....................................................................................................8
Installing the Wires into the Terminal Blocks ...................................................................................8
Installing the Expansion Tank .............................................................................................................9
Section 3: Hydronic Heating System
Location and Clearances .......................................................................................................................10
Mounting Requirements .......................................................................................................................10
Mounting the Heat Exchangers ...........................................................................................................11
Wiring the Heat Exchangers ................................................................................................................13
Plumbing Requirements ........................................................................................................................14
Plumbing the Hydronic Heating System ............................................................................................15
Section 4: Thermostats
Fresh Water Tank Thermostat .............................................................................................................17
Room Thermostats ................................................................................................................................18
Section 5: Domestic Water System
Domestic Water System Requirements...............................................................................................19
Domestic Water System Plumbing ......................................................................................................19
Section 6: Switch Panel
Switch Panel Location ...........................................................................................................................21
Switch Panel Mounting .........................................................................................................................21
Switch Panel Wiring ...............................................................................................................................21
Section 7: Fuel System
Fuel Filter Location ...............................................................................................................................23
Fuel System Requirements ...................................................................................................................23
Fuel System Installation ........................................................................................................................23
Section 8: Exhaust System
Exhaust System Requirements .............................................................................................................26
Installing the Exhaust System ..............................................................................................................26
Section 9: Power Source Wiring
Connecting the 12 Volt-DC Power .....................................................................................................29
Summary of Contents for 375D
Page 1: ...2008 Aqua Hot Heating Systems Inc Installation Manual...
Page 38: ...Wiring Diagram Appendix A...
Page 40: ...Wire Gauge Information Appendix B...
Page 42: ...Antifreeze Types Appendix C...
Page 44: ...Antifreeze Mixture Water Quality Recommendations Appendix D...
Page 46: ...Antifreeze Terms and Mixture Ratio Appendix E...