Patent ID: 6899124

Claim:
A kit for installing an inflatable protective plenum on pipes subject to freeing and a protective plenum on a water box subject to freezing, said pipes and water box being part of a water system, the kit having thin, flexible tubing, the tubing having a circumference greater than the pipes on which it is to be installed, the thin, flexible tubing being in sections, the kit having rigid, joining elements and fasteners to join adjacent sections of the thin, flexible tubing to the rigid, joining elements with air leakage, the kit having an enclosure with a dimension greater than the water box on which it is to be installed forming a protective plenum about the water box, the kit also having a connecting element to connect the protective plenum about the pipes to a source of warm air to inflate the protective plenum about the pipes and to form a protective barrier of warm air in the protective plenum about the pipes and the kit having a connecting element to connect the protective plenum about the water box to the protective plenum about the pipes without a cold air return in either the protective plenum about the pipes or the protective plenum about the water box.