Installation - Water Connections; Water Connections; Local Pump And Water Flow Limits; Quality Of The Water - RBI Infinite Energy2 IW199 Installation And Operation Instructions Manual

7 - INSTALLATION - Water connections

7.1 - Water
connections
The appliance comes with the
connections shown in Figures 6-6 or
6-7.
Follow Figure 7-5 or Figure 7-6 to pipe the
appliance to the system.
CAUTION!!!
Size your water
system in a way to never
increase above the maximum
water flow expected by Figure
7-1 to prevent erosion inside
the copper pipes of the
appliance.
CAUTION!!!
All water system
piping must be installed in
accordance with the ANSI/ASME
Boiler and Pressure Vessel Code,
Section IV. All applicable local
codes and ordinances must also
be followed.
CAUTION!!!
Before connecting
the appliance to the system this
last must be thoroughly flushed
to remove sediment, flux, filings
and other foreign matter. The
heat exchanger can be damaged
by build-up or corrosion due to
sediment.
CAUTION!!!
This appliance can
supply water at a temperature
up to 203°F (95°C) (setup of the
safety high limit thermostat) and
pressure of 160 PSI (11,2 bar)
(maximum setup of the relief
valve). If the hot water system
is built with materials not able
to resist to this temperature
and pressure, contractor must
supply and install a device that
will shut-off the appliance before
the system material's maximum
operating temperature and
pressure are met.
CAUTION!!!
Do not use this
appliance to directly heat
swimming pool or spa water.
7.2 - Local pump
and water flow
limits
This appliance must be fitted with
a local pump that must be properly
sized to avoid scaling inside the heat
exchanger. Proceed as follow:
1.- Check the water hardness in your
area;
2.- Acceed to Figure 7-1, select the
raw satisfying the hardness of your
water and cross with your appliance
model;
CAUTION!!!
If the water flow is
lower than required by Figure
7-1, scale will form into the
heat exchanger, dramatically
reducing the life expectation
and voiding the warranty
3.- With the corresponding minimum
water flow, go to graph of Figure
7-2 and check which are the
corresponding appliance pressure
drops;
4.- Add to the precedent pressure
drops any other pressure drops of
the system;
5.- Choose the right pump able to
satisfy the required minimum flow
with the resulting pressure drops.
To piping the local pump to the
appliance see Figures 7-5 and 7-6.
To electrically connect the pump see
Figures 9-3 and 9-4.
CAUTION!!!
A field supplied
pump relay must be installed
if the pump current draw is
greater than 3 amps.
42
7.3 - Quality of the
water
CAUTION!!!
If the water hardness
is higher than 330 PPM operate
upstream the appliance to reduce
the water hardness with approved
softening methods.
CAUTION!!!
If the appliance
must supply water at temperature
over 140°F, the water hardness
must not be higher than 150
PPM and the water flow must
be at values expected by Figure
7-1. To bring the water hardness
below 150 PPM operate upstream
the appliance using approved
softening methods.
CAUTION!!!
Water with a
hardness less than 5 grains
per gallon will usually have a
pH which can be aggressive
and corrosive causing damage
to the heat exchanger and/or
appliance piping.
CAUTION!!!
Water quality must
be within 6,5 and 8,5 pH acidity
value. Values out of this range
are corrosive, causing damage
to the heat exchanger and/or
appliance piping.
CAUTION!!!
Install a filter
or equivalent multipurpose
strainer at the cold water inlet
connection. Filter will be able to
stops particles with an equivalent
volume of a sphere with diameter
of 0.04" (1mm).