i250 Commercial Tankless System - Wall Hung

Type Indoor/Outdoor, Wall-Hung, Fully Condensing, Commercial, Tankless, Direct Ignition
Fuel Preset for NG / LP Convertible
Minimum / Maximum Input (BTU/hr) 30,000 / 250,000
Thermal Efficiency 92%
Energy Factor N/A
Dimensions H X W X D (Inches) 26.2 X 17.7 X 15 (3.9 CU. FT)
Weight (LBS) 93 LBS
Water and Gas Connections 3/4" NPT
Minimum Flow Rate 0.6 GPM

Max 3” Vent Length - Single Pipe / Power Vent 130 ft, deduct 5 ft per 90° elbow
Max 3” Vent Length - Two Pipe / Direct Vent 65 ft, deduct 5 ft per 90° elbow
Max 2” Vent Length - Single Pipe / Power Vent  (2” not allowed at elevations above 4,000 ft) N/A
Max 2” Vent Length - Two Pipe / Direct Vent  (2” not allowed at elevations above 4,000 ft) N/A
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, Water Shut-Off Valve, 2X10A Fuse, Dual
Flame Sensing
Water Pressure Min / Max (PSI) 30 / 150

NG/LP - Minimum Static Gas Pressure 1/2” Black Iron (non-corrugated) 5”

NG/LP - Minimum Static Gas Pressure 3/4” Black Iron (non-corrugated) 2.5”
NG/LP - Minimum Dynamic Pressure at Full Firing Rate 0.5”
NG/LP - Maximum Static Gas Pressure 14”
Gas Pressure for Adjustments 8” for NG, 11” for LP
Electrical 120V AC, 60 Hz
Power Consumption 500W (Max 4.2 Amps), 8W (Standby)