Contents 4
Obtaining replaceable parts ....................................................................................................................... 57
Maintenance and service ............................................................................................................................ 57
Air and water heat exchanger maintenance ........................................................................................ 57
Water quality and leveling requirements, and condensation management ......................................... 58
Water quality requirements and specifications .............................................................................................. 58
Acceptable water quality specifications .............................................................................................. 58
Frost damage .................................................................................................................................. 59
Water precautions ........................................................................................................................... 59
Plumbing materials to avoid .............................................................................................................. 59
Leveling requirements ................................................................................................................................. 60
Condensation management ......................................................................................................................... 60
Support and other resources ........................................................................................................ 61
Before you contact HP ................................................................................................................................ 61
HP contact information ................................................................................................................................ 61
Customer Self Repair .................................................................................................................................. 61
Regulatory compliance notices ..................................................................................................... 69
Safety and regulatory compliance ................................................................................................................ 69
Acronyms and abbreviations ........................................................................................................ 70
Documentation feedback ............................................................................................................. 71
Index ......................................................................................................................................... 72
