Submittal Sheet

ManualsBrandsRinnai ManualsBoilerQ205SN

Q205S Condensing Boiler

Q205S-SP-2 8/2017

SPECIFICATIONS

Rinnai is continually updating and improving products; therefore, specifications are subject to change without prior

notice. Local, state, provincial and federal codes must be adhered to prior to installation.

Standard Features

 Factory Installed Boiler/System Modulating Pump

 Onboard Outdoor Reset Control System with Sensor Standard

 Priority Domestic Hot Water (DHW) Standard (with Optional 3-way

Valve, Not Included)

 Modulating Ceramic Premix Burner

 5.0:1 Turndown Ratio

 Spark Ignition

 Exceeds SCAQMD 1146.2 Low NO

Requirements

 Stainless Steel Water Tube Condensing Heat Exchanger

 Direct Vent Sealed Combustion

 Concentric and Twin Pipe Venting Adapters Included

 Approved for Room and Closet Installations

Optional Accessories

 3-way Valve DHW Kit

 RS100 Single Zone Controller

 Flue Gas Temperature Sensor

 Room Air Filter

 NG to LP Conversion Kit

General Specifications

Water Content 1.8 Gal / 7.0 L

Max Supply Boiler

Temperature

176 °F / 80 °C

Max Operating Pressure 45 PSI / 310 kPa

Relief Valve Rating 375 MBH / 110 kWh

Relief Valve Pressure Rating 30 PSI / 207 kPa

Unit Weight 141 lbs / 64 kg

Min Inlet Gas Pressure NG 4.0" WC / 10.0 mbar

Max Inlet Gas Pressure NG 10.5" WC / 26.2 mbar

Min Inlet Gas Pressure LP 8.0" WC / 19.9 mbar

Max Inlet Gas Pressure LP 13.5” WC / 33.6 mbar

Electrical Voltage Mains 120 V / 60 Hz

Electrical Voltage Controls 24 V

Power Consumption Max Load 234 W

Power Consumption Standby

Load

14 W

Recommended Circuit Breaker

Rating

15 A

Sound Level 57 dB

Performance Specifications

Fuel Types NG and LP

Input (Heating) 205 MBH / 60.0 kWh

Heating Capacity 186 MBH / 54.5 kWh

Input (DHW) N/A

Minimum Input

NG: 41 MBH / 12.0 kWh

LP: 74 MBH / 21.7 kWh

Turndown Ratio 5.0:1 / 2.8:1 TDR

System Pump Model UPER 20-78

Max Head Pressure at Flow

Rate

23.1 ft at 5.0 GPM

7.0 m at 18.9 LPM

AFUE 95.0%

DHW Flow Rate 75°F ΔT N/A

DHW Minimum Activation N/A

Flow Restrictor Color N/A

Max Equivalent Exhaust Vent

Length

40 ft / 12.2 m

Max Equivalent Combustion

Air Vent Length

40 ft / 12.2 m

Approved Venting Materials

Polypropylene, Stainless

Steel, PVC, CPVC

Summary of content (2 pages)

PAGE 1
Q205S Condensing Boiler Standard Features Optional Accessories                  Factory Installed Boiler/System Modulating Pump Onboard Outdoor Reset Control System with Sensor Standard Priority Domestic Hot Water (DHW) Standard (with Optional 3-way Valve, Not Included) Modulating Ceramic Premix Burner 5.0:1 Turndown Ratio Spark Ignition Exceeds SCAQMD 1146.
PAGE 2
Q205S Condensing Boiler DIMENSIONS A Height 26.8” / 680 mm B Width 26” / 660 mm C Depth 15.2” / 385 mm D Left Side / Vent 19.5” / 495 mm E Center to Center / Vent and Air Supply 4.7” / 121 mm F Back / Vent 10.6” / 270 mm G Left Side / Gas Pipe 2.6” / 65 mm H Left Side / Supply Pipe 7.8” / 199 mm J Left Side / Return Pipe 19.8” / 504 mm K Left Side / Condensate Pipe 20.9” / 530 mm P Pipe Length of G 0.7” / 18 mm Q Pipe Length of C 2” / 50 mm R Pipe Length of F and R 18.