Rinnai Q85SP, Q175CP, Q85SN Replenishing the central heating system, Provided with a filling loop

Replenishing the central heating system

The central heating installation needs to be filled with potable (drinking) water. For topping up the installation you use the filling loop according to the following procedure:

i NOTICE	Contact your installer if your installation is not
	provided with a filling loop.

Operating instructions Rinnai Q-Series

1 Switch all functions off (heating, DHW and pump);

2Briefly push the 'STEP'-button: P x.x = water pressure in PSI;

3 Slowly open the filling loop (Indication on display increases);

4 Fill up slowly to between 22 and 25 PSI; 5 STOP appears on the display;

6 Close the filling loop;

7 De-aerate the complete installation , start at the lowest point; 8 Check the water pressure and if necessary top it up;

9 Close the filling loop;

10 Activate functions required (heating , DHW and/or pump ); 11 If A xx appears on the display, wait for 17 minutes;

12 Check the waterpressure and if necessary top it up to 22 to 25 PSI

13 Close the filling loop;

14 Press the ‘STEP’-button;

15 Be sure that the filling loop is closed.

After the automatic de-aeration programm (A xx) is finished the boiler will return to the Good reading or Technical reading.

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