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UNPACKING RINNAI WATER HEATER
After unpacking the appliance check for
damage, if the heater is damaged contact
your supplier immediately. Do not install a
damaged appliance before checking with
your supplier.
A heater accessories pack is inside the
carton. The 26i model has a built-in remote
control on front of the appliance. Remote
controllers are not supplied with the Rinnai
HD range of heaters because they are
commercial units. If you require controllers
in commercial situations they are compatible
with the HD range and available from Rinnai
or your supplier.
Check that the appliance supplied is the
correct gas type and pressure for the
installation. Refer to the data plate located
on the left-hand side of the appliance.
Remove the heater and the accessories
from the carton, and check that all the parts
are included. The remote control cable is
provided with spade connectors.
Ignition
Press ON/OFF button of remote controller to turn on unit and the remote controller display and priority
LED will light up. When a hot water tap is opened the water flow sensor revolves and sends a pulse
signal to the printed circuit board (PCB). When the PCB detects water flow it compares the measured
temperature to the temperature setpoint. If required it begins the ignition process with the combustion
fan motor starting first. Once the air proving is made the main solenoid valve and change-over solenoid
valves are opened and the burner is lit by the sparking igniter.
Temperature Control
Once the flame rod proves ignition the heat modulates by controlling the gas rate, combustion air, and
water flow to precisely heat the water. This control is done by measuring the outgoing water temperature
with a thermistor.
Standby
When the hot water tap is closed the PCB no longer receives a pulse signal from the water flow sensor.
The PCB shuts the main solenoid valve and change-over solenoid valves and the burner extinguishes.
OPERATION
19
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