Installation Guide

Electric Mini Tank Water Heater • 11
• Terminate the discharge pipe a maxi-
mum of six inches above a fl oor drain
or outside the building. Do not drain
the discharge pipe into the drain pan;
instead pipe it separately to an ade-
quate drain. In cold climates, terminate
the discharge pipe inside the building
to an adequate drain. Outside drains
could freeze and obstruct the drain line.
Protect the drain from freezing.
Discharge Pipe
6 “ (15.2cm)
(no more than)
Figure 13 - The end of the T&P Relief Valve
discharge pipe must stop no more than six
inches above a floor drain or terminate outside
the building.
• Do not place any valve or other restric-
 on between the tank and T&P Relief
Valve. Do not cap, block, plug, or insert
any valve between the T&P Relief Valve
and the end of the discharge pipe. Do
not insert or install any reducer in the
discharge pipe.
Step 5:
Install shutoff and
tempering valves
1
If one is not already installed,
install a manual shutoff valve in
the cold water line that supplies
the water heater. Install the shutoff valve
near the water heater so that it is readily
accessible. Only use valves that are
compa ble with potable water. Use only
full-fl ow ball or gate valves. Other types of
valves may cause excessive restric on to
the water fl ow.
2
Install a Thermosta c Mixing
Valve at each point-of-use (for
example, kitchen sink, bathroom
sink, bath, shower). Consult the valve
manufacturer’s instruc ons or a qualifi ed
person.
Figure 14 - Install Thermostatic Mixing Valves at
each point where hot water will be used.
WARNING! Even if the water heater’s
thermostat(s) are set to a rela vely low
temperature, hot water can scald. Install
Thermosta c Mixing Valves at each point-
of-use to reduce the risk of scalding. (page
4.)
3
For water heaters that are fed by
a solar water hea ng system (or
any other pre-hea ng system),
always install a Thermosta c Mixing Valve
or other temperature limi ng device in the
inlet water supply line to limit water supply
inlet temperature to 120°F. Solar water
hea ng systems can supply water with
temperatures exceeding 170°F and may
result in water heater malfunc on.
WARNING! Hot water provided by solar
hea ng systems can cause severe burns
instantly, resul ng in severe injury or
death (page 4).
Step 6:
1
Connect the water
supply
Determine the type of water pipes in your
home. Most homes use copper water
pipes, but some use CPVC or cross-linked
polyethylene (PEX). Use fi  ngs appropri-
ate for the type of pipe in your home. Do
not use iron or PVC pipe – they are not
suitable for potable water.
2
Connect the cold water supply
using 1/2” Na onal Pipe Thread
“NPT” to the cold water inlet
nipple.
For ease of removing the water heater for
service or replacement, connect the water
pipes with a coupling called a union. We
recommend using a dielectric-type union
(available at Lowe’s®). Dielectric unions
can help prevent corrosion caused by  ny
electric currents common in copper water
pipes and can help extend the life of the
water heater.
INSTALLATION
INSTALLATION