Rinnai Boiler Q175S User Guide

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  
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  
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  
Boiler  
Model  
Boiler  
Model  
Boiler Model  
Q175S Q205S  
NG/LP NG/LP  
Units  
Units  
Q175S Q205S  
Fuel Type  
Water content  
gal  
°F  
1.8  
1.8  
Input  
MBH  
MBH  
%
175  
161  
95.7  
205  
189  
95.7  
Max. supply boiler  
temperature  
176  
176  
Heating Capacity  
AFUE (I=B=R)  
Max operating pressure  
Relief valve rating  
psi  
MBH  
psi  
45  
375  
30  
45  
375  
30  
Part Load Efficiency  
(EN677)  
%
98.5  
98.5  
Relief valve pressure rating  
Dry weight  
lbs  
141  
4.0"  
10.5"  
8.0"  
14.0”  
141  
4.0"  
10.5"  
8.0"  
14.0”  
Electrical Specifications  
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.  
Boiler Model  
Q175S Q205S  
120/60 120/60  
Units  
Electrical Voltage Mains  
Electrical Voltage Controls  
V/Hz  
V
24  
24  
Max equivalent exhaust  
vent length  
ft  
ft  
80  
80  
40  
40  
Power Consumption Max  
Load  
W
W
A
210  
234  
Max equivalent combustion  
air vent length  
Power Consumption Stand  
by Load  
14  
15  
14  
15  
Polypropylene,  
Stainless Steel,  
PVC, CPVC  
Recommended Circuit  
breaker rating  
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.  
Q175S / Q205S SP  
2/2011  
© 2011 Rinnai Corporation  
 

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