HTP Marine Water Heater - Manual

INSTALLATION
Heater must be installed in accordance with local codes. When possible, locate the heater near a floor drain for convenient flush-
ing and draining. Provisions should be made so that, in the event the water heater or its fittings were to leak, the resulting flow of water
will not cause damage to the surroundings or other critical areas of the boat/structure. The heater and water lines should be protected
from freezing temperatures. Refer to page 4, for typical installations. The mounting tabs should be securely mounted to a solid flat
deck or floor with a minimum of all four tabs provided. Supplementary bracing should always be used. If it is necessary to fasten
with wood screws, they must be sized to support the water heater during movement. If this installation is subject to heavy rocking
and/or banging, supplementary bracing is required. When installing water heater, consider the openings for cold water and drains;
temperature and pressure relief valve; hot water outlet; electrical connection; and heat exchanger connections.
TO CONNECT HEATER
Use unions on the hot and cold water connections and the relief valve discharge line, so that the heater may be easily disconnected for
servicing when necessary.
1. Connect cold water supply line to pipe connection marked “COLD” near bottom of heater (See fig. 1)
2. Install a shut-off valve and a drain valve, not supplied, in the cold water line near heater. A check valve or any other no
return device must be installed to prevent hot water back flow into the cold water tank and cold water lines.
NOTE: The drain valve must be installed between the check valve and water heater to enable draining when necessary.
3. Connect hot water line to pipe connection to outlet marked “HOT”, on side near the top of the heater. (See fig. 1)
LP-03 PAGE: 1 5/17/05
DANGER
Water temperature over 125 degrees F. can cause severe burns
instantly, or death from scalds. Children, disabled, and elderly are at
highest risk of being scalded. See instruction manual before setting
temperature at water heater. Feel water before bathing or showering!
Temperature limiting valves are available. See instruction manual.
CAUTION
T & P valve is provided near the top of the heater. This valve provides protection against
excessive pressures and temperatures in this water heater. When replacing for whatever
reason, temperature-and-pressure protective equipment must meet local codes; but not less
than a combination temperature-and-pressure-relief valve, certified as meeting the
requirements for Relief Valves and Automatic Gas Shut-off Devices for Hot Water Supply
Systems, ANSI Z21.22, by a nationally recognized testing laboratory that maintains periodic
inspection of production of listed equipment or materials. The discharge opening must not
come in contact with any live electrical part or be locked or reduced in size under any
circumstances. Pipe the discharge outlet of relief valve to suitable open drain using pipe full
size of relief valve outlet. The end of the discharge line should not be concealed or threaded
and should be protected from freezing.