Commissioning; Testing; Gas Pressure Setting; Commissioning Check List - Rinnai REU-VR3237WG Operation & Installation Manual

TESTING

1. Before final connection of the water heater purge gas, hot water and cold water supply lines.
Swarf in either the gas or water supplies may cause damage.
2. Turn on gas and cold water supplies.
3. Test for water leaks and gas escapes near the unit.
4. Isolate gas supply. Remove test point screw located on the gas inlet connection and attach
pressure gauge.
5. Turn the power 'on' at the power point socket and turn on gas.
6. If water controllers are fitted, turn ensure they are controller 'ON', select the maximum delivery
temperature and open ALL available hot water taps including the shower. If remote controllers
are not fitted, simply open all available hot water taps. (CAUTION: Ensure building occupants do
not have access to hot water outlets during this procedure.)
7. Operate ALL other gas appliances at their maximum gas rate, in accordance with manufacturers
instructions.
8. With all gas appliances in operation at maximum gas rate, the pressure should read between
1.13 - 3.0 kPa on Natural Gas. On LPG the pressure should be 2.75 - 3.0 kPa. 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. Note that the gas regulator on the appliance is
electronically controlled and factory pre-set. Under normal circumstances it DOES NOT need
adjustment during installation.
9. Close hot water taps including the shower.
10. 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.
11. If water controllers are fitted, it is necessary to test their operation through the complete range of
functions (refer to the Operation sections of this manual).
12. Confirm the hot water delivery temperature(s) using a thermometer. If controllers are fitted,
ensure temperatures exceeding 50º C cannot be selected on bathroom or ensuite controllers.
13. After testing is completed, explain to the householder the functions and operation of the water
heater and temperature controllers (if fitted). Ensure the "PRODUCT RECORDS" on page 35 of
this manual is filled in and that the booklet is handed to the customer. Reminding the customer
to complete the Warranty Card and forward to Rinnai.

GAS PRESSURE SETTING

The regulator is electronically controlled and factory pre-set. Under normal circumstances it does 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.
Instructions for Gas Pressure Setting are to be found in the instruction pocket located inside the
appliance front cover.

COMMISSIONING CHECK LIST

A commissioning check list is provided to enable the installer to step through the correct
commissioning procedure when installing a Rinnai Continuous Flow water heater.
The check list can also assist the installer to identify potential installation errors that may prevent the
appliance from operating correctly.
For your convenience a copy of the commissioning check list has been provided on the following
page.
Rinnai Australia

COMMISSIONING

33 Installation Manual