Commissioning - Rinnai Infinity VT16 REU-VR1620WG Installation Manual

Commissioning

Testing
1. Ensure building occupants do not have access to the hot water outlets during this
procedure.
WARNING
1. Before final connection of the water heater, purge the gas and hot and cold water supply
lines. Swarf in the gas or water supplies may cause damage.
2. Turn on the gas and water supplies and test for leaks (gas and water) near the unit.
3. Isolate gas supply. Remove test point screw located on the gas inlet and attach pressure
gauge.
4. Turn the power on at the power point socket and turn on the gas.
5. If water controllers are fitted ensure they are on. Select the maximum delivery
temperature and open all available hot water taps including the shower. If water controllers
are not fitted, open all available hot water taps.
6. Operate all other gas appliances at their maximum gas rate.
7. With all gas appliances operating on maximum, the pressure should read between 1.0-
3.5 kPa (NG) or 2.75-3.5 kPa (LPG). If the pressure is lower, the gas supply is inadequate
and the appliance will not operate to specification. It is the responsibility of the installer to
check the gas meter, service regulator and pipe work for correct operation and sizing. The
gas regulator on the appliance is electronically controlled and factory preset. Under normal
circumstances it does not need adjustment during installation.
8. Close all hot water outlets.
9. Inspect and clean the strainer located on the cold water inlet connection. This may need to
be repeated to ensure the strainer remains clear, especially on new installations.
10. If water controllers are fitted, it is necessary to test their operation through the complete
range of functions (refer operation manual).
11. Confirm hot water delivery temperatures using a thermometer. If controllers are fitted,
ensure temperatures exceeding 55 °C cannot be selected on bathroom controllers.
12. After testing is completed, explain to the customer how to operate the water heater and
water controllers (if fitted). Ensure your details are completed (p. 26 of the operation
manual).
Gas pressure setting
The gas regulator on the appliance is electronically controlled and factory preset. Under
normal circumstances it does not need adjustment during installation. Make adjustments only
if the unit is not operating correctly and all other causes for incorrect operation have been
eliminated. Instructions for gas pressure setting are in the instruction pocket located inside the
appliance front cover.
Commissioning checklist
Commission the unit in accordance with the Commissioning Checklist supplied with the
appliance (front cover of appliance). Ensure you leave the completed checklist with the
customer.
Rinnai New Zealand Ltd. Continuous Flow Water Heater Installation Manual:
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