RBI Infinity Energy 2, Installation Instructions Manual

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8.2.3 - Expansion Tank
If a water heater is installed in a
closed water supply system, such
as one having a backflow preventer
in the cold water supply line, means
shall be provided to control thermal
expansion. Contact the water supplier
or local plumbing inspector on how to
control this situation.
Install an expansion tank. Ensure
the expansion tank is properly sized
for the water volume (See Section
18, header “Content of water”) and
the system volume, temperature and
pressure.
CAUTION!!!
Undersized
expansion tanks will cause
system water to be lost
through the relief valve
The expansion tank must be located
as shown in Figures 8-5 and 8-6 or as
per recognized design methods. Refer
to the expansion tank manufacturer
instructions for additional installation
details.
8.2.4 - Circulator pump
This water heater must be fitted
with a circulator pump for domestic
hot water. The water resistance of
the water heater is shown in graph
form in Figure 7-3. To this resistance
installer shall add the system water
resistance and the storage tank water
resistance to size the circulator pump
accordingly.
To electrically connect the pump
(Local pump) follow Figure 10-5.
A field supplied pump relay must be
installed if the pump current draw is
greater than 3 amps.
8.3 - Scalding
This water heater can deliver scalding
temperature water at any faucet in the
system.
Be careful whenever using hot water
to avoid scalding injury.
Certain appliances such as
dishwashers and washing machines
may require increased temperature
water.
By setting the water temperature
control on this water heater to obtain
the increased temperature water
required by these appliances, you
may create the potential for scald
injury.
To protect against injury, you should
install a mixing valve in the water
system.
This valve will reduce point of
discharge temperature by mixing cold
and hot water in branch supply lines.
Such valves are available from the
local plumbing supplier.
Figure 8-3 details the relationship
of water temperature and time with
regard to scald injury and may be
used as a guide in determining the
safest water temperature for your
applications.
8.2.5 - Sizing water
system
Size the pump, piping and system
components required in the water
system, using recognized design
methods.
CAUTION!!!
It is up to the
installer to ensure the minimum
water heater flow is not less
than 4 GPM at any time. If
the flow is lower, the unit
automatically stops the burner.
8.2.6 - Anti-legionella
The IW water heater is not protected
against the proliferation of the
Legionella bacteria. If you don’t
install any Anti-legionella external
system, you have to keep the water
temperature inside the tank, at least
at 140°F (60°C). This temperature
will prevent the proliferation of the
legionella bacteria.
WARNING!!!
WARNING!!!
Your domestic
hot water system must be
protected against legionella
bacteria. Failure to comply with
this provision can result in
severe personal injury or death.
8 - INSTALLATION - IW water connections
APPROXIMATE TIME / TEMPERATURE
RELATIONSHIPS IN SCALDS
120°F (49°C) More than 5 minutes
125°F (51°C) 1,5 to 2 minutes
130°F (54°C) About 30 seconds
135°F (57°C) About 10 seconds
140°F (60°C) Less than 5 seconds
145°F (63°C) Less than 3 seconds
150°F (65°C) About 1,5 seconds
155°F (68°C) About 1 second
Figure 8-3 Time / temperature scalds