Standard Features

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

Built in DHW 6.6 gallon indirect tank

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

Q175C Condensing Boiler

Optional Accessories

RS100 Single zone controller

Flue Gas temperature sensor

Room Air Filter

NG to LP conversion Kit

LP to NG Conversion Kit

SPECIFICATIONS

General Specifications

 

Units

 

 

 

 

Water content

gal

1.8

 

 

 

Max. supply boiler

°F

176

temperature

 

 

Max operating pressure

psi

45

 

 

 

Relief valve rating

MBH

375

 

 

 

Relief valve pressure rating

psi

30

 

 

 

Dry weight

lbs

196

 

 

 

Min inlet gas pressure NG

"W.C.

4.0"

 

 

 

Max inlet gas pressure NG

"W.C.

10.5"

 

 

 

Min inlet gas pressure LP

"W.C.

8.0"

 

 

 

Max inlet gas pressure LP

"W.C.

14.0”

 

 

 

Max equivalent exhaust vent

ft

80

length

 

 

Max equivalent combustion

ft

80

air vent length

 

 

 

 

 

 

 

Polypropylene,

Approved venting materials

 

Stainless Steel,

 

 

PVC, CPVC

Performance Specifications

 

Units

 

 

 

 

Fuel Type

 

NG/LP

 

 

 

Input

MBH

175

 

 

 

Heating Capacity

MBH

161

 

 

 

AFUE (I=B=R)

%

95.7

 

 

 

Part Load Efficiency (EN677)

%

98.5

 

 

 

DHW flow rate 75ºF ΔT

Gpm

4.1

 

 

 

Electrical Specifications

 

Units

 

 

 

 

Electrical Voltage Mains

V/Hz

120/60

 

 

 

Electrical Voltage Controls

V

24

 

 

 

Power Consumption Max Load

W

210

 

 

 

Power Consumption Stand by Load

W

14

 

 

 

Recommended Circuit breaker rating

A

15

 

 

 

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

Q175C SP

2/2011

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Rinnai Q175C specifications Standard Features, Optional Accessories, Performance Specifications

Q175C specifications

The Rinnai Q175C is a powerful and efficient condensing tankless water heater designed for residential applications. Engineered for households with high hot water demands, this model stands out for its advanced technology, reliability, and environmental sustainability.

One of the most notable features of the Rinnai Q175C is its capacity to deliver an impressive flow rate of up to 7.5 gallons per minute (GPM) at a temperature rise of 35 degrees Fahrenheit. This means that multiple hot water fixtures can be utilized simultaneously without experiencing a significant drop in temperature, making it ideal for larger families and homes with multiple bathrooms.

The technology behind the Rinnai Q175C enhances its efficiency and performance. It utilizes a condensing heat exchanger that captures and reuses exhaust heat, optimizing energy use. This results in a uniform hot water supply while significantly reducing energy costs. The unit is Energy Star certified, ensuring that homeowners can enjoy both comfort and savings on their utility bills.

The Rinnai Q175C is designed with user convenience in mind. Its compact size allows for easy installation in various settings, including tight spaces. It can be installed in a garage, basement, or even outdoors, providing flexibility for homeowners. Additionally, it features a digital controller that enables users to set precise temperatures, ensuring a consistent hot water supply tailored to individual preferences.

Safety is another paramount consideration in the design of the Rinnai Q175C. It incorporates advanced safety features such as freeze protection and overheat protection, ensuring worry-free operation even in extreme conditions. The unit also provides dual power sources, allowing it to operate on either natural gas or propane, which adds to its versatility.

Lastly, Rinnai prides itself on durability and quality. The Q175C is constructed with high-grade materials and components, ensuring a long lifespan with minimal maintenance. The unit comes with a comprehensive warranty, reinforcing Rinnai's commitment to customer satisfaction.

In conclusion, the Rinnai Q175C is a state-of-the-art tankless water heater that combines advanced technology with convenience and safety. With its high flow rate, energy efficiency, and durable design, it represents an excellent investment for homeowners seeking reliable and endless hot water solutions.