Q175S / Q205S Condensing Boiler
Standard Features | Optional Accessories |
•Onboard outdoor reset control system with sensor standard
•Prebuilt plumbing kit with insulated Low Loss Header
•Priority DHW standard (3 way valve not included)
•Domestic hot water plate warming
•Modulating Ceramic premix burner
•5:1 turn down ratio
•Spark ignition
•Exceeds SCAQMD 1146.2 Low NOx 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
•3 way valve DHW kit
•RS100 Single zone controller
•Flue Gas temperature sensor
•Room Air Filter
•NG to LP conversion Kit
•LP to NG Conversion Kit
SPECIFICATIONS
General Specifications
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| Boiler | Boiler | |
| Units | Model | Model | |
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| Q175S | Q205S | |
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Water content | gal | 1.8 | 1.8 | |
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Max. supply boiler | °F | 176 | 176 | |
temperature | ||||
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Max operating pressure | psi | 45 | 45 | |
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Relief valve rating | MBH | 375 | 375 | |
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Relief valve pressure rating | psi | 30 | 30 | |
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Dry weight | lbs | 141 | 141 | |
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Min inlet gas pressure NG | "W.C. | 4.0" | 4.0" | |
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Max inlet gas pressure NG | "W.C. | 10.5" | 10.5" | |
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Min inlet gas pressure LP | "W.C. | 8.0" | 8.0" | |
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Max inlet gas pressure LP | "W.C. | 14.0” | 14.0” | |
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Max equivalent exhaust | ft | 80 | 40 | |
vent length | ||||
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Max equivalent combustion | ft | 80 | 40 | |
air vent length | ||||
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| Polypropylene, | ||
Approved venting materials |
| Stainless Steel, | ||
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| PVC, CPVC | ||
Performance Specifications
| Units | Boiler Model | ||
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| Q175S | Q205S | ||
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Fuel Type |
| NG/LP | NG/LP | |
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Input | MBH | 175 | 205 | |
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Heating Capacity | MBH | 161 | 189 | |
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AFUE (I=B=R) | % | 95.7 | 95.7 | |
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Part Load Efficiency | % | 98.5 | 98.5 | |
(EN677) | ||||
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Electrical Specifications
| Units | Boiler Model | ||
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| Q175S | Q205S | ||
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Electrical Voltage Mains | V/Hz | 120/60 | 120/60 | |
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Electrical Voltage Controls | V | 24 | 24 | |
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Power Consumption Max | W | 210 | 234 | |
Load | ||||
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Power Consumption Stand | W | 14 | 14 | |
by Load | ||||
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Recommended Circuit | A | 15 | 15 | |
breaker rating | ||||
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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.
© 2011 Rinnai Corporation | Q175S / Q205S SP | 2/2011 |