Rinnai Boiler Q175C User Guide

Q175C 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  
Built in DHW 6.6 gallon indirect tank  
Modulating Ceramic premix burner  
RS100 Single zone controller  
Flue Gas temperature sensor  
Room Air Filter  
NG to LP conversion Kit  
LP to NG Conversion Kit  
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  
SPECIFICATIONS  
General Specifications  
Performance Specifications  
Units  
gal  
Units  
Water content  
1.8  
Fuel Type  
NG/LP  
175  
Max. supply boiler  
temperature  
Input  
MBH  
MBH  
%
°F  
176  
Heating Capacity  
AFUE (I=B=R)  
161  
Max operating pressure  
Relief valve rating  
psi  
MBH  
psi  
45  
375  
30  
95.7  
98.5  
4.1  
Part Load Efficiency (EN677)  
DHW flow rate 75ºF ΔT  
%
Relief valve pressure rating  
Dry weight  
Gpm  
lbs  
196  
4.0"  
10.5"  
8.0"  
14.0”  
Min inlet gas pressure NG  
Max inlet gas pressure NG  
Min inlet gas pressure LP  
Max inlet gas pressure LP  
"W.C.  
"W.C.  
"W.C.  
"W.C.  
Electrical Specifications  
Units  
V/Hz  
V
Electrical Voltage Mains  
120/60  
24  
Electrical Voltage Controls  
Max equivalent exhaust vent  
length  
ft  
ft  
80  
80  
Power Consumption Max Load  
Power Consumption Stand by Load  
Recommended Circuit breaker rating  
W
210  
14  
Max equivalent combustion  
air vent length  
W
A
15  
Polypropylene,  
Stainless Steel,  
PVC, CPVC  
Approved venting materials  
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.  
Q175C SP  
2/2011  
© 2011 Rinnai Corporation  
 

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