ECO ULTRA Electric Boiler
Installation, Use and Care Manual
(Revision June 2017)
, Page
33.
Installation
The manufacturer’s warranty does not cover
any damage or defect caused by installation
or attachment or use of any special
attachment other than those authorized by the
manufacturer into, onto, or in conjunction
with the water heater. The use of such
unauthorized devices may shorten the life of
the water heater and may endanger life and
property. The manufacturer disclaims any
responsibility for such loss or injury resulting
from the use of such unauthorized devices
DOMESTIC WATER CONNECTIONS
The Eco ULTRA boiler with optional heat
exchanger for DHW could be install in
autonomous electrical mode or automatic transfer
mode. Figures 20 and 21 show installation in
automatic
transfer.
According
the
supply
temperature of the renewable energy source the
DHW heat exchanger will heat or pre-heat the
domestic water. When supply temperatures are in
a range of 80
o
F to 130
o
F un back-up water heater
need to be add.
The HOT WATER OUTLET and the COLD
WATER INLET connections are clearly marked.
Inlet water connections (COLD WATER INLET)
are to be made to the copper pipe (sweat
connection) at the bottom of the heater. Outlet
water connections (HOT WATER OUTLET) are
to be made to the copper pipe (sweat connection)
at the top of the heater.
The installation of copper unions or copper alloy
unions is recommended on the HOT and COLD
water lines, so that the water heater may be easily
disconnected for servicing if necessary.
Dielectric unions are required for protection of the
water heater if dissimilar pipe material like
galvanized pipe is used.
Install shutoff (ball) valves for servicing
convenience.
Use only clean copper or approved plastic pipe
for water connections. Local codes or regulations
shall govern the exact type of material to be used.
To minimize heat loss during non-draw periods, a
heat trap formed from piping can be used.
Insulate all pipes containing hot water, especially
in unheated areas.
Cap or plug unused connections. If the water
heater is replacing a tankless coil in the boiler, do
not cap tube outlets in the tankless coil after
disconnecting from plumbing.
Thermometer(s) should be installed to indicate
the temperature of the water at or near the outlet
of the water heater and storage tank(s), if
provided.
EXPANSION TANK FOR POTABLE
WATER
Determine if there is a check valve, a back flow
preventer, a pressure-reducing valve, a water
meter or a water softener in the cold water supply
line.
A check valve creates a closed system and
prevents the water, as it is being heated, from
expanding back into the cold water supply line.
Pressure can build up within the water heater,
causing the relief valve to operate during a
heating cycle. This excessive operation can
cause premature failure of the relief valve and
possibly of the water heater itself.
Replacing the relief valve will not correct the
problem. One method of preventing pressure
build-up is to install an expansion tank for potable
water in the cold water supply line between the
heater and check valve. Contact your installing
contractor, water supplier, local plumbing
inspector or plumbing supply house for
assistance.
RECIRCULATION LINE (IF APPLICABLE)
If a recirculation line is installed, the return
connection should be made to a tee close to the
inlet connection on the water heater. A check
valve should always be installed in the
recirculation line to prevent cold water from
entering.
WARNING
!
