Installation Guide

Installation & Servicing Instructions Rinnai Q-Series

Freeze protection

Freeze protection for new or existing systems must use glycol that is specially

formulated for this purpose. This includes inhibitors, which prevent the glycol from

attacking the metallic components. This should be for multi-metallic components.

Make certain to check that the system ﬂ uid is correct for the glycol concentration and

inhibitor level. The system should be tested at least once a year and as recommended

by the producer of the glycol solution. The allowed maximum concentration is 50%.

Use only Rinnai approved inhibitors. See the Rinnai Boiler Applications Manual

for an approved list of inhibitors.

Use only inhibited propylene glycol solutions, which are specially formulated

for central heating systems. Ethylene glycol is toxic and can attack gaskets and

seals used in the boiler and system. Approved glycols are listed in the Rinnai

Boiler Applicatons Manual.

Additives in the installation water are not permitted.

Approved antifreeze: • Rhomar RhoGard Mutli-Metal (AL safe) • Sentinel X500

(max. concentration 50%) • Noble Noburst AL • Fernox Alphi 11

Approved system cleaner: • Noble Noburst Hydronic System Cleaner • Fernox F3 Cleaner

• Rhomar Hydro-Solv 9100 • Sentinel X400

The system cleaners from NoBurst, Rhomar, and Fernox are not to be used in

the boiler. The boiler must be closed off (valved off) from the rest of the system

or not connected while the cleaners are in the system. The system should then

be drained and then thoroughly ﬂ ushed with clean water to remove all the

system cleaner.

Approved inhibitors: • Rhomar Pro-tek 922 • Sentinel X100

• Noble Noburst AL inhibitor

10.2 Filling the heating system

For ﬁ lling or topping off the installation you use the ﬁ lling loop according to the following

procedure:

1 Switch on the power supply;

2 The display will show FILL;

3 All functions off (heating , DHW and pump );

4 Push brieﬂ y the 'STEP'-button: P XX (XX = water pressure in PSI);

5 Open the ﬁ lling loop (Indication on display increases);

6 Fill up slowly to 16 to 18 PSI (1.1 and 1.3 bar);

7 STOP appears on the display;

8 Close the ﬁ lling loop;

9 De-aerate the complete installation, start at the lowest point;

10 Check the water pressure and if necessary top it off;

11 Close the ﬁ lling loop;

12 Activate the functions in use (heating , DHW and/or pump );

WARNING

NOTICE