13
Electrical Connections
Before any electrical connections are made, be sure that the water heater is
full of water and that the manual shut-off valve in the cold water supply line is
open. Check the rating plate and wiring diagram before proceeding. This
electric water heater was built and wired in accordance with the Underwriters
Laboratories testing approvals requirements. The temperature limiting
device is of the manual reset, trip-free type and has been factory installed to
interrupt all ungrounded power supply conductors in the event of thermostat
failure. Thermostats are factory set and wired in accordance with the wiring
diagram fastened to the inside of the top access panel. The plumbing
supplier in your area ordered this heater wired at the factory to comply with
existing area codes, but local utility codes may require or allow other
circuitry. Consult your local power company to determine the correct
electrical hook-up in order to meet local utility and building codes and in
order to obtain the most economical rates. Also check to find out if you are
required to obtain a permit before starting the installation. The following
chart shows the recommended fuse size for the maximum water heater
wattage. The maximum wattage and rated voltage are shown on the water
heater data plate. The water heater must be well grounded. A green ground
screw is provided at the electrical connection point for connecting a ground
wire. Ground screw on 10 & 15-gallon models is located under the
removable element cover.
Recommended Fuse size
Voltage
Max.
Watts 120v 208v 240v 277v 480v
1000
15A 10A 10A 10A 10A
1250
15A 10A 10A 10A 10A
1500
20A 10A 10A 10A 10A
2000
25A 15A 15A 10A 10A
2500
30A 15A 15A 15A 10A
3000
35A 20A 20A 15A 10A
3500
--- 25A 20A 20A 10A
4000
--- 25A 25A 20A 15A
4500
--- 30A 25A 25A 15A
5000
--- 30A 30A 25A 15A
5500
--- 35A 35A 25A 15A
6000
--- 40A 35A 30A 20A
14
GENERAL OPERATION
When the switch is closed, the operation of this electric water heater is
automatic. The thermostats are preset to the “HOT” setting to provide a
water temperature of approximately 120°F
(49°C)
to reduce the risk of scald
injury.
Care must be taken whenever using hot water to avoid scalding injury.
Certain appliances require high temperature hot water (such as dishwashers
and automatic clothes washers).
TO FILL THE WATER HEATER
1. Close the water heater drain valve (if provided) by inserting a standard
flat head screwdriver into the slot and turning clockwise.
2. Open the cold water supply shut-off valve.
3. Open several hot water faucets to allow air to escape from the system.
4. When a steady stream of water flows from the faucets, the water heater
is filled. Close the faucets and check for water leaks at the water heater
drain valve, combination temperature and pressure relief valve and the
hot and cold water connections.
TO DRAIN THE WATER HEATER
Should it become necessary to completely drain the water heater, make sure
you follow the steps below:
1. Disconnect the power supply to the water heater. Consult the plumbing
professional or electric company in your area for service.
2. Close the cold water supply shut-off valve.
3. Open the drain valve (if provided) on the water heater by inserting a
standard flat head screwdriver into the slot and turning counter-
clockwise. The drain valve has threads on the end that will allow
connection of a standard hose coupling. For those models not equipped
with a drain valve, disconnect cold water inlet piping at a convenient
connection location as close to an adequate drain as possible.
CAUTION! THIS WATER MAY BE HOT.
4. Open a hot water faucet to allow air to enter the system.
To refill the water heater, refer to “TO FILL THE WATER HEATER.”
Before closing the switch to allow electric current to flow to the
water heater, make certain that the water heater is full of water and
that the cold water inlet valve is open. Complete failure of the
heating element(s) will result if they are not totally immersed in
water at all times.
Failure of the element(s) due to dry-firing is not
covered by warranty.
CAUTION
Scalding may occur within five (5) seconds at a temperature setting of
140°F
(60°C).
Summary of Contents for M-2-120R6DS-5500W
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