Commissioning - Rinnai Infinity 16 external Operation And Installation Manual

2.6 COMMISSIONING

● Make sure the water heater is not subject to corrosive compounds in the air.
● Check the water supply does not contain chemicals or exceeds total hardness that will damage the heat
exchanger.
● Verify the clearances from the water heater and from vent termination/air intake unit are met.
● Ensure that a manual gas control valve has been placed in the gas (& water) line to the water heater.
● Before final connection of the water heater purge gas, hot water and cold water supply lines. Debris or swarf in
either the gas or water supplies may cause damage.
● Clean the inlet water filter by closing the cold and hot water inlet isolation (shut-off) valves. Put a bucket under
the filter at the bottom of the water heater to catch any water that is contained inside the unit. Unscrew the
water filter.
Rinse the filter to remove any debris. Install the filter and open the isolation valves.
● Turn on gas and cold water supplies and test for water leaks and gas escapes near the unit.
● Ensure that hot and cold water lines are not crossed to the unit and are leak free.
Remove front panel and confirm the control board dipswitch settings are set to the correct
positions as required: factory default or sideways flue diverter fitted.
IMPORTANT
Fix the front panel back.
● Isolate gas supply. Remove test point screw located on the gas inlet connection and attach pressure gauge.
● Turn the power 'on' at the power point socket and turn on gas.
● If water controllers are fitted, ensure they are 'ON', with the maximum delivery temperature selected and open
all available hot water outlets.
● If water controllers are not fitted, simply open all available hot water outlets.
Ensure building occupants do not have access to hot water outlets during this procedure.
CAUTION
● Operate all other gas appliances at their maximum gas rate, in accordance with manufacturers instructions.
● With all gas appliances in operation at maximum gas rate, the pressure should read between 2.5kPa on natural
gas. On LPG the pressure should be 2.8kPa. If the pressure is lower, the gas supply is inadequate and the
appliance will not operate to specification. It is the Installers responsibility to check the gas meter, service
regulator and pipe work for correct operation/sizing and rectify as required.
The gas regulator on the appliance is electronically controlled and factory pre-set. Under normal
circumstances it does not need adjustment during installation.
NOTE
● Close hot water taps including the shower.
● Inspect and clean the strainer located on the cold water inlet connection. This procedure may need to be
repeated to ensure the strainer remains clear, especially on new installations.
● If water controllers are fitted, it is necessary to test their operation through the complete range of functions.
● Confirm the hot water delivery temperature using a thermometer. If controllers are fitted, ensure temperatures
exceeding 50°C cannot be selected on bathroom or toilet.
● After testing is completed, explain to the householder the functions and operation of the water heater and water
controllers (if fitted).
● Inform customer on use of an adequate water softening system to prevent damages to heat exchanger.
● Leave the manual to customer.
● If the water heater is not needed for immediate use, then drain the water from the heat exchanger.
27