A.O. Smith PHPT-80, 318257-000 Installation Checklist, Water Heater Location, Water System Piping

INSTALLATION CHECKLIST

Water Heater Location

□Centrally located with the water piping system.

□The flooring beneath the water heater must be able to support the weight of the water heater when filled with water (967 lbs. full).

□Located indoors (such as a basement or garage) and in a vertical position. Sheltered from freezing temperatures.

□Provisions made to shelter the area from water damage. Metal drain pan installed and piped to an adequate drain.

□Sufficient room to service the water heater.

□Sufficient air for the heat pump to function. The water heater must be located in a space 750 cubic feet or larger, and must have unrestricted airflow. As an example, a room that has an 8 foot tall ceiling and is

10 feet long by 9-1/2 feet wide would contain 760 cubic feet.

NOTE: For optimal efficiency and serviceability, the

following clearances should be maintained: 3 feet on the air inlet side, 5 feet on the air outlet side, 6 inches in the back, and 2 feet in the front.

□The unit cannot be placed into any type of closet or small enclosure.

□The site location must be free from any corrosive elements in the atmosphere such as sulfur, fluorine, and chlorine. These elements are found in aerosol sprays, detergents, bleaches, cleaning solvents, air fresheners, paint, and varnish removers, refrigerants, and many other commercial and household products. In addition excessive dust and lint may affect the operation of the unit and require more frequent cleaning (See “Cleaning the Heat Pump” section).

□Ambient air temperature must be above 45°F and below 109°F. If the ambient air temperature falls outside these upper and lower limits the electrical elements will activate to meet the hot water demand.

Water System Piping

□Temperature and pressure relief valve properly installed with a discharge pipe run to an adequate drain and sheltered from freezing (See Figure 5).

□All piping properly installed and free of leaks.

□Heater completely filled with water (See “Water Piping System” section).

□Closed system pressure buildup precautions installed (See “Closed System/Thermal Expansion” section).

□Mixing valve (when applicable) installed per manufacturer’s instructions (See “Water Temperature Regulation” section).

Condensate Drain Line Installation

□Must be located with access to an adequate drain or condensate pump.

□Condensate drain lines installed and piped to an adequate drain or condensate pump (See Figure 4).

Electrical Connections

□The water heater requires 240 VAC for proper operation.

□Wiring size and connections comply with all applicable codes or in the absence of local or state codes follow NFPA-70, the National Electrical Code-current edition.

□Water heater and electrical supply are properly grounded.

□Wiring enclosed in approved conduit (if required by local codes).

□Proper overload fuse or circuit breaker protection installed.

Post Installation Review

□Understand how to use the User Interface Module to set the various modes and functions (See “Adjusting the User Interface Module/Operating Modes” section).

□Hybrid Mode is the recommended Operating Mode. Understand the various Operating Modes and which mode may be best based on season, ambient temperature, and usage (See “Operating Mode Description” section).

NOTE: It may be necessary to temporarily change modes if for example filling a spa or hot tub.

□Understand the importance of routine inspection/ maintenance of the condensate drain pan and lines (See “Inspection/Cleaning of the Condensate Drain Pan & Condensate Drain Lines” section). This is to help prevent any possible drain line blockage resulting in the condensate drain pan overflowing. IMPORTANT: Water coming from the plastic shroud is an indicator that both condensation drain lines may be blocked. Immediate action is required.

□To maintain optimal operation check, remove and clean the air filter (See “Air Filter Cleaning/Replacement” section).

□The Installation Instructions and Use & Care Guide should be kept with the water heater for reference.

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