PATH freewatt HDJ, Installation, Operation & Maintenance Manual, Page: 2 / 68

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1 - Safety Information........................................ 3
2 - Introduction ................................................. 4
3 - Components, Controls and Accessories ...........12
4 - APC Universal Transfer Switch .......................14
5 - Compatible Room Thermostats .....................17
6 - freewatt Transfer Switch Model FTS-1.8 ........18
7 - Before installing the system ..........................19
8 - Placing the system .......................................22
9 - Exhaust Gas Leak Sensor .............................29
10 - Combustion Air and Vent Pipe ......................31
11 - Gas Supply Piping ......................................33
12 - Electrical Wiring & Connections ....................34
13 - Commissioning and Startup .........................40
14 - Maintenance and Cleaning...........................41
15 - Detailed Sequence of Operation ...................43
16 - Troubleshooting .........................................47
17 - Piping and Wiring Schematics ......................53
TABLE OF CONTENTS
Safety Symbols
Manual contains important safety information. Read all
freewatt PLUS System manuals for safety information
and warnings
.
DANGER
Indicates a hazardous situation which, if not avoided,
WILL result in death or serious injury
!
WARNING
Indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
!
NOTICE
Used to address practices not related to personal
injury.
Energy Star partner, ECR International has
determined the boiler included as part of
freewatt PLUS System meets Energy Star
guidelines for energy effi ciency.
Honda MCHP Intertek-ETL Listed,
“Utility Interactive, Cogeneration,
Stationary Engine-Generator Assembly,
Control # 3163904 (US).”
Boiler and HI Module assembly design
certifi ed in US and Canada by Canadian
Standards Association.
CAUTION
Indicates a hazardous situation which, if not
avoided, could result in minor or moderate injury.
! !