5
iN401 - iN501 Technical Specifications
May
2019
-
Revision
00
3. Technical Specifications
3.1 Specifications Chart
Technical Data
Specification
iN401
iN501
Type
Indoor, Floor-Mounted
Fuel
Preset for natural gas but convertible to propane
Minimum Input (BTUs/hour)
30,000
Maximum Input (BTUs/hour)
399,999
499,999
Maximum Output (BTUs/hour)
375,999
469,999
Thermal Efficiency
9
4
%
Turn Down Ratio (TDR)
13.3:1
16.7:1
Water Inlet / Outlet Connection
1-1/2” NPT
Gas Inlet Connection
1-1/2” NPT
Condensate Drain Connection
3/4” PVC
Maximum Condensate Flow Rate (GPM)
2.8
3.6
Dimensions H X W X D (inches)
67.5 X 20 X 20 (15.6 cu. ft)
Service Clearances
1” on all sides, 6” on top, 12” in front
(Required for proper service)
Weight (lbs)
345
Venting Type
Direct Vent (2 pipe – air intake and exhaust gas outlet), Power Vent (1 pipe – exhaust gas only)
Venting Materials (USA)
Sch. 40 PVC, Sch. 40 CPVC, Polypropylene, Stainless Steel (AL29-4C)
Venting Materials (Canada)
Type BH Gas Vent Classes: II A (PVC), II B (CPVC), II C (Polypropylene), I (AL294C SS)
Venting Size (Diameter)
4”
Max
4
” Vent Length – Single Pipe/Power Vent
250’ *
1
80’ *
Max
4
” Vent Length – Two Pipe / Direct Vent
125’ *
90’ *
* Venting Note: From the maximum length above, deduct 5 ft. per 90° elbow and 2 ft. per 45° elbow.
Ignition
Electronic Spark Ignition
Temperature Range
100°F – 190°F
Temperature Stability
+/- 4°F
Installation Location Ambient Temperature
40°F – 130°F
Safety
Flame Rod, Thermal Fuse, Overheat Prevention Device, Fan Speed Monitor, Flue Temperature Monitor, Blocked Vent Detector, Dual Flame
Sensing
Water Pressure Min / Max (PSI)
30/160
NG/LP- Min. Gas Pressure (Full Fire)
2.5”
W.C.
NG/LP - Maximum Static Gas Pressure
14”
W.C.
Gas Pressure for Adjustments
8”
W.C.
for Natural Gas, 11”
W.C.
for Propane
Electrical
120V AC, 60 Hz
Power Consumption
Max 9.5 Amps, 16W (Standby)
Internal Water Volume (gallons)
1
Features and Approvals
iN
401
iN
501
Built-In Redundancy
Multiple Heat Exchangers with Individual Control
Cascading
Masterless,, Automatic Rotation
Common Venting
Yes, Up to 4 Units
Heat Exchanger
Expandable, Stainless 316L
Appliance Certication to ANSI Z21.10.3
ETL
SCAQMD
Ultra Low Nox (under 20 PPM)
ASME
HLW
Performance
Specification
Hot Water Output (45°F Rise)
16.8
21.0
Hot Water Output (70°F Rise)
10.8
13.5
Hot Water Output (90°F Rise)
8.4
10.5
Hot Water Output (100°F Rise)
7.6
9.4
Hot Water Output (140°F Rise)
5.4
6.7
Warranty
Heat Engine Coil – 10 years, All Other Parts – 2 years
Note:
Due to continuous product improvements, the design and technical specifications are subject to change without notice.
