HTP HPW-50-6 - Manual (Page 11)

11
LP-374 REV. 3.25.14
To reduce the risk of excessive pressures and temperatures in this water heater, install temperature and pressure protective equipment
required by local codes and no less than a combination temperature and pressure relief valve certified by a nationally recognized
testing laboratory that maintains periodic inspection of production of listed equipment or materials, as meeting the requirements for
Relief Valves and Automatic Gas Shutoff Devices for Hot Water Supply Systems, ANSI Z21.22. This valve must be marked with a
maximum set pressure not to exceed the marked maximum working pressure of the water heater, and orient it or provide tubing so that
any discharge from the valve exits only within 6 inches above, or at any distance below, the structural floor, and does not contact any
live electrical part. The discharge opening must not be blocked or reduced in size under any circumstances.
Failure to follow the instructions in this warning could result in explosion, property damage, personal injury, or death.
H. TO FILL THE WATER HEATER
The tank must be full of water before water heater is turned on. The water heater warranty does not cover damage or failure resulting
from operation with an empty or partially empty tank.
1. Make certain that the drain valve is completely closed.
2. Open the shut-off valve in the cold water supply line.
3. Open each hot water faucet slowly to allow the air to vent from the
water heater and piping.
A steady flow of water from the hot water faucet(s) indicates a full
water heater.
I. ELECTRICAL CONNECTIONS
The water heater must be wired to a separate 30 amp, 240V circuit
with copper conductors, surge protective device, and suitable
disconnecting means provided by a qualified electrician. All wiring
must conform to local codes or the latest edition of the National
Electrical Code ANSI/NFPA 70.
The water heater is completely wired to the junction box at the top of the water heater
. An opening for a ½” or ¾” electrical fitting is
provided for field wiring connections.
The voltage requirements and wattage load for the water heater are specified on the rating label on the front of the water heater.
The branch circuit wiring should include either:
1. Metallic conduit or metallic sheathed cable approved for use as a grounding conductor and installed with fittings approved for the
purpose.
2. Nonmetallic sheathed cable, metallic conduit, or metallic sheathed cable not approved for use as a ground conductor shall include a
separate conductor for grounding. It should be attached to the ground terminals of the water heater and the electrical distribution box.
Do not mis-wire electrical connections. 240V AC must be applied to the L1 and L2 wires shown in Figure 9. Failure to properly wire the
water heater may damage the compressor or other electrical components. Such failure will VOID the warranty.
Proper ground connection is essential. The presence of water in the piping and water heater does not provide sufficient conduction for a
ground. Nonmetallic piping, dielectric unions, flexible connectors, etc., can cause the water heater to be electrically isolated. Improper
grounding could result in severe personal injury or death due to electric shock.
The water heater warranty does not cover any damage or defect caused by installation, attachment, or use of any type of energy-saving
or other unapproved devices (other than those authorized by the manufacturer) into, onto, or in conjunction with the water heater. The
use of unauthorized energy-saving devices may shorten the life of the water heater and may endanger life and property.
HTP disclaims any responsibility for such loss or injury resulting from the use of such unauthorized devices.
Figure 9 – Branch Circuit Wiring Detail