Instructions / Assembly

lp-547 Rev. 1.29.16
9
When lling the water heater, open a hot water tap to release
air in the tank and piping. The tank must be full of water
before the heater is turned on. Failure to ensure the water
heater is full before turning it on could result in damage to
the water heater and other property damages. Such damages
ARE NOT covered by water heater warranty.
H. Applications
Figure 3 - Piping Detail - NOTE: Drawing is meant to demonstrate
system piping concept. Heat traps are optional.
PIPING NOTES:
The following notes are applicable to all of the piping applications
demonstrated on this page.
1. Minimum pipe size should match connection size. Upsize pipe
accordingly if greater ow is required.
2. A thermal expansion tank suitable for potable water must be
sized and installed within this piping system between the backow
preventer and the cold water inlet.
3. All circulators should have an integral ow check.
4. Drains and check valve between unit and storage tank will assist in
purging air from system.
5. These drawings are 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.
6. Mixing valve application is optional, but recommended to help
prevent scalding. See Part 3 for more information.
Part 4 - Wiring
Tank must be full of water before the power is turned on.
Heating elements will be damaged if energized for even a short
time while tank is dry. Failures due to “dry-ring” ARE NOT
covered by warranty.
Be sure to ground the water heater. The preferred way to
ground is with rigid metal conduit between the main panel and
the water heater junction box with approved end ttings (check
codes on the use of exible conduit). If making a separate
ground, a green ground wire is provided in the water heater
junction box. Replace the junction box cover and insulation after
you have made the wiring connections. Failure to follow these
instructions could result in property damage, severe personal
injury, or death.
This unit is factory wired to a junction box on top of the water
heater for eld wiring connection. These heaters are equipped
and wired for the maximum possible input allowable (see Table
3 for listing of inputs and amperage requirements). The voltage
requirement and dedicated wattage load for the heater is
specied on the rating label of the water heater. Consult your
local power company to determine if your electrical service is
adequate for the additional load of the heater.
Refer to the wiring diagrams for eld connections. All wiring
must conform to local code and the National Electric Code,
and should be done by a qualied licensed electrician or the
local electric utility. Grounding can be accomplished by using
approved conduit and ttings or other approved conductive
material. A grounding wire is provided on the junction bracket.
This grounding wire must be used in the installation.