RBI Boiler, Installation And Operation Instructions Manual

Page: 96 / 154

96
14.1 - Check water
pressure
14.1.1 - Check water
pressure on IB boiler
If the pressure inside the water circuit
falls below the minimum pressure for
the system, the appliance switches
off and the display “N” as per Figure
14-1, shows Err 59 to indicate that
it is necessary to restore the correct
pressure. Open the fi lling valve and
check the pressure on the pressure
gauge “M” of Figure 14-1, the word
Err 59 will disappear when the
pressure back at the right value.
To prevent accidental relief valve
openings, fi ll the circuit slowly.
CAUTION!!!
During normal
operations, the fi lling valve
must always remain in the
closed position.
If, with time, the pressure drops,
restore the correct value. This
operation may have to be repeated
several times during the fi rst month of
operations to remove any air bubbles
present.
If after one month the pressure
continue to decrease, call a quali fi ed
service technician.
CAUTION!!!
Continual fresh
make-up water will reduce boiler
life. Mineral buildup in the heat
exchanger reduces heat transfer,
overheats the stainless steel heat
exchanger, and causes failure.
Addition of oxygen carried in by
makeup water can cause internal
corrosion in system components.
Leaks in boiler or piping must
be repaired at once to prevent
makeup water entering the boiler.
14.1.2 - Check water
pressure on IW water
heater
If the pressure inside the water circuit
falls below the minimum pressure for
the system, the appliance switches
off and the display “N” as per Figure
14-1, shows Err 59 to indicate that
it is necessary to restore the correct
pressure. Because water heater is
installed in an open loop system,
you have to check for the net water
pressure or for any pressure reducer
upstream yhe water supply circuit.
When the pressure is restored the Err
59 will disappear.
14.2 - Overview
The heater is pre-set with standard
parameters. However, it is possible
to make a number of changes or
consult the parameters by means of
using the “Users’ Menu” (see Section
14.13) and the “Installers’ Menu” (see
Section 14.14).
During functioning display “N” of
Figure 14-1, displays the supply
temperature, and display “M” (see
Figure 14-1) shows the pressure
of the water. The various operating
statuses are shown with other icons
as per Figure 14-1.
14.3 - Displays
During normal operations, the display
remain permanently off, except
appliance go into Lockout, or in
Blocking error.
In any case, pressing any key, display
will light on and will stay light on for 5
minutes from the last pressing key.
14.4 - Start-up
procedure
1. Open the manual gas shutoff valve;
2. switch on electric power to the
heater;
3. If the display shows code Err 65,
it means that the polarity has
not been observed (Call service
department to restore the situation,
do not attempt to repair it);
4. press key or to
setup the supply temperature
desired, then press RESET key to
save the changement.
5. press key and
to setup the indirect water heater
desired temperature, then
press RESET key to save the
changement.
The fl ame control appliance will start-
up the burner.
If the burner fails to ignite within 60
seconds, the heater will automatically
attempt ignition another four times,
after which if it fails to start-up, it will
shut down and the display will show
Loc 1 together icon .
Units models 399 up to 1000,
because are multiburner, when the
they go into any lockout or blocking
error display will show the icon
and the corresponding burner icon in
fail (

or

) that blink.
Press the RESET key in order to re-
set normal operating conditions.
On units model 399 up to 1000,
to restore the normal operating
condition, press RESET key one time,
diplay will show the type of lockout,
than press again RESET key (to back
in normal display mode, press and
hold for at least 5 seconds RESET
key).
The heater will automatically attempt
another start-up.
CAUTION!!!
If the appliance
frequently shuts down, contact
a qualifi ed technician to restore
normal running conditions. Do
not attempt to repair it.
14.5 - IW supply
water temperature
adjustment
The water heater provides hot water at
the temperature set by adjusting keys
or as shown in Figure
14-1.
When the keys are pressed, the display,
item “N” in Figure 14-1, shows the
supply water setpoint being selected.
The range within which the water can
be set is 68°F (20°C) to 176°F (80°C).
WARNING!!!
Water
temperature over 125°F (51°C)
can cause severe burns instantly
or death from scalds. Children,
disabled and elderly are at
highest risk of being scalded.
Feel water before bathing or
showering.
14 - USE