Use and Care Manual

ManualsBrandsWestinghouse ManualsPlumbing Product80 gal. 10 Year 76,000 BTU Natural Gas Water Heater

WHL-001 REV. 9.3.14

Figure 6 – High Efficiency Water Heater with Air Handler on Side

NOTES:

1. Minimum pipe size should match unit connection size. Upsize pipe accordingly if greater flow is required.

2. A thermal expansion tank suitable for potable water must be sized and installed within this piping system between the backflow preventer and the cold

water inlet.

3. Gas line must be rated to the unit maximum input capacity. Unit must have 10 feet of pipe after gas regulator.

4. All circulators should have an integral flow check.

5. Check with air handler manufacturer for proper sizing.

6. This drawing is meant to demonstrate system piping only. The installer is responsible for all equipment and detailing required by local codes. In

Massachusetts, you must install a vacuum relief valve per 248 CMR. With air handlers, outdoor reset is available with an outdoor sensor. See Part 8,

Section D.

7. Always shut off power to the water heater or isolate the heater from the system if ANY plumbing work is to be done. Running the water heater without

water will result in dry firing.

NOTES FOR AIR HANDLER APPLICATION:

1. MASSACHUSETTS STATE PLUMBING CODE REQUIRES A DISTANCE NO GREATER THAN 50 FEET FROM THE WATER HEATER TO THE

FAN COIL IN THE AIR HANDLER.

2. MASSACHUSETTS STATE PLUMBING CODE REQUIRES AN ELECTRONICALLY TIMED CIRCULATOR PUMP TO ACTIVATE EVERY SIX

HOURS FOR 60 SECONDS. THIS CIRCULATOR IS REQUIRED TO BE BRONZE OR STAINLESS.

3. ALL WATER PIPING MUST BE INSULATED.

4. YOU MUST INSTALL A VACUUM RELIEF VALVE PER 248 CMR.

NOTE: THIS DRAWING IS MEANT TO DEMONSTRATE SYSTEM PIPING ONLY. THE INSTALLER IS RESPONSIBLE FOR ALL EQUIPMENT AND

DETAILING REQUIRED BY LOCAL CODES.

An ASSE 1017 thermostatic mixing valve MUST be installed when using outdoor reset. Failure to do so could result in substantial

property damage, serious injury, or death.

The piping will not support the weight of the water heater circulator pump. Refer to the pump manufacturer’s installation instructions to

properly support the circulator pump. Failure to comply with these instructions could result in substantial property damage, severe

personal injury, or death.