Commissioning - Rinnai HD49kWe Installation Manual

Commissioning

AS/NZS 5601.1, clauses 2.6.8 and 6.11.2. states that every part of the gas installation shall be
commissioned prior to initial use. It is the installer's responsibility to ensure all current AS/NZS
5601 requirements are met.
The appliance must be tested after installation. Ensure the building occupants do not have
access to the hot water outlets during this procedure.
WARNING
Please note
The Rinnai INFINITY HD VCM models come with a factory preset outlet temperature of 75 °C,
and the A28i with a preset temperature of 55 °C. The high and low gas operating pressures are
also factory preset. Under normal operating conditions the operating pressures do not require
adjustment during installation. Make adjustments ONLY if the unit is not operating correctly and all
other possible causes for incorrect operation have been eliminated.
Inlet supply pressure MUST BE checked and set within the operating parameters of the appliance
in all instances. If the appliance cannot be adjusted to perform correctly call 0800 RINNAI (0800
746 624) for assistance.
Commissioning steps
1 Flush water pipes and gas line
2 Connect the gas line
3 Purge the gas line of air
4 Final connection test
5
Check supply pressure
6
PCB settings checked
7 Operate and check for gas leaks
8 Operational test
9
Check cold water inlet filter
10 Customer handover
Before final connection of the water heater, flush the gas, hot, and cold water
supply lines. Swarf in the gas or water supplies may cause damage, a common
problem, which is not covered by warranty.
Operate ALL other gas appliances at their maximum rate. With all gas
appliances on maximum the supply pressure must read between 1.13-3.0 kPa
on Natural Gas and 2.75-3.0 kPa on LPG. If the supply pressure is lower, the
gas supply is inadequate and the appliance will not operate to specification.
It is the installer's responsibility to check the gas meter, service regulator and
pipe work for correct operation and sizing, and rectify as required.
If factory default settings are changed check the PCB to ensure it is set
correctly.
Replace the appliance front cover otherwise the unit won't operate correctly,
and operate and test for gas leaks using an electronic leak detector.
Confirm the water flow and hot water delivery temperature using a
thermometer. If water controllers are fitted, it is necessary to test their
operation through the complete range of functions, refer separate instructions
provided with the water controllers.
Inspect and clean the water inlet filter. This may need to be repeated to ensure
the filter remains clear, especially on new installations. If you feel the customer
is capable of doing this then show them how to inspect and clean the water
filter as well.
After testing is completed, explain to the customer the function and operation
of the water heater and water controllers (if fitted). Also talk to them about:
• The gas, power, and water connections
• How frost protection works
• Procedure for draining the water heater
• Where to find the data plate
• Maintenance and servicing
If the customer is not there try and contact them by phone to discuss these
important points. Ensure the installer details section is completed in the
operation guide, the commissioning checklist has been completed and signed,
and that the guide and checklist are left with the customer.
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