Use of non-Rinnai parts will result in the void of warranty. 8 9 Condensate tray figure 31 11 12 13 14 !DANGER Installation Visual inspection of the flame Inspection glass figure 33 The burner must flame evenly over the entire surface when operating correctly. The flame must burn with a clear, blue, stable flame. Check the flame through the inspection glass in the ignition probe (fig. 33). The flame pattern should be as shown in the figures below. SATISFACTORY Ignition probe blue flame UNSATISFA

The program takes 17 minutes and stops automatically. After this the unit will function normally. (See also 'Filling and de-aerate the boiler and installation, chapter 9). On a call for heating or hot water the control system will select the required water control temperature. This water temperature is called the T-set value. On a call for central heating the boiler ignites first at low input. The input is then changed slowly to match the load required. The boiler operates in this way to avoid e

Refer to this manual. For assistance or additional information consult a qualified installer or the gas supplier. CAUTION! The user manual is part of the documentation that is delivered to the installation's operator. Go through the information in this manual with the owner/operator and make sure that he or she is familair with all necessary operating instructions. NOTICE! Installation and service must be performed by a qualified installer, service technician or the gas supplier. In the Commonwe

First check the identification plate on the boiler for the suitable gas type. Do not use the boiler for another type of gas than indicated on the identification plate of the boiler. This will cause improper functioning and can damage the boiler. Natural gas: resume with chapter 6.4.1 Propane gas: resume with chapter 6.4.2 Installation ii 6.4.1. Gas connection with natural gas Sediment trap figure 7 i! ii The gas supply connection must comply with local regulations or, if such NOTICE regulations

Confer with local buildingofficials before installation. 3 BC 53H 4 N/ O 4 N/ C 6N/ O N N/ C 6 120 VACINPUT TT COM WR 24VAC 53H 4 N/ O 4 N/ C 6N/ O N N/ C 6 120 VACINPUT TT COM WR 24VAC T stat 120V DHWPump ZonePump DHWPumpRelay HeatingPumpRelay* * May substitute for multizone relay 120VLow voltage Q boilerSingle Zone Circuit with Priority DHWNote: See pipingdiagram Single ZonePriority DHW AquastatForDHW 21 22 23 24 26 2725 B 1 2 3 4 6 75 8 9 10 12 1311 N L LN N L N CH DHW L 14 15 16 17 19 2018 N

Q175C Boiler ............... DHW Recirculation ...........................................5 QPD-09-0002 Rev B ........... Q Series Boiler ............. DHW from Indirect Tank ...................................6 QPD-09-0003 Rev B ........... Q Series Boiler ............. Single Zone Priority DHW.................................7 QPD-09-0004 Rev B ........... Q Series Boiler.............. 4 Zone Valve with DHW ...................................8 QPA-09-0001 Rev C ........... Q Series Boiler.....

Q175C Boiler ............... DHW Recirculation ...........................................5 QPD-09-0002 Rev B ........... Q Series Boiler ............. DHW from Indirect Tank ...................................6 QPD-09-0003 Rev B ........... Q Series Boiler ............. Single Zone Priority DHW.................................7 QPD-09-0004 Rev B ........... Q Series Boiler.............. 4 Zone Valve with DHW ...................................8 QPA-09-0001 Rev C ........... Q Series Boiler.....

On/Off ExternalSafetycontact 24V~ 100mA QED-09-0001 A 4 B 3 CD 4 2 SCALESIZEDATE 1 SHEET DWG NO. REV A 2 1 D Approved By NTS BA 12/ 09/ 09EL Q Series BoilerSingle Zone Circuit with Priority DHW This drawing is the exclusiveproperty of Rinnai AmericaCorporation, it may not bereproduced or given to thirdparties. 1of 1 Rinnai America Corporation103 International DrivePeachtree City, GA 302691- 800- 621- 9419 Drawn By JG Tole rance Fraction =±1/ 16" x. x= ±0.030x. xx=±0.015x. xxx= ±0.005 This is not

3 BC 53H 4 N/ O 4 N/ C 6N/ O N N/ C 6 120 VACINPUT TT COM WR 24VAC 53H 4 N/ O 4 N/ C 6N/ O N N/ C 6 120 VACINPUT TT COM WR 24VAC T stat 120V DHWPump ZonePump DHWPumpRelay HeatingPumpRelay* * May substitute for multizone relay 120VLow voltage Q boilerSingle Zone Circuit with Priority DHWNote: See pipingdiagram Single ZonePriority DHW AquastatForDHW 21 22 23 24 26 2725 B 1 2 3 4 6 75 8 9 10 12 1311 N L LN N L N CH DHW L 14 15 16 17 19 2018 N A 120VPower supply 120VExternal pump 120VExternalcontrol

The drawing doesnot imply compliance with local building code requirements. It is theresponsibility of the engineer or contractor to ensure that the installation isin accordance with all local building codes. Confer with local buildingofficials before installation. 3 BC 120VLow voltage Q Series boilers2 boilers with DHW indirect tank123456910111213141516171819202122262DonotapplypowertN1/ tN2Com10KUnOSwComOutBoilDHW10A10AStageStage112210A10APowerNLP1BoilDHWPmp/ VlvBoilerDemandDemComDHWDemSetpDem8