Page 6
Model Name FTHW100
Gas Input Rate
MAX 100,000 Btu/h
MIN 20,000 Btu/h
Installation Indoor / Wall hung type
Flue System
Sealed Combustion Direct / Single Vent /Sidewall
Vent
Vent Run / Vent Material 2˝(50ft), 3˝(100ft) Schedule 40 CPVC, PP, PVC
Orice Size
NG 0.181” (4.6 mm)
LP 0.142” (3.6 mm)
Gas Supply Pressure
NG 3.5˝ WC to 10.5˝ WC
LP 8.0˝ WC to 13.0˝ WC
Manifold Pressure
Gas type LP NG
Max re
-0.075” WC (+/- 0.01) -0.070” WC (+/- 0.01)
Min re
0.003” WC (+/-0.001) 0.000” WC (+/- 0.001)
Power Supply
Main Supply 120V 60Hz / 4A
Maximum Power
Consumption
160W
Ignition System
Direct Electronic Ignition / Automatic Flame
Sensing
Burner System
Single Orice Premixed Fuel Modulation Metal
Ceramic Infrared
Gas Valve System Combination modulating (Current proportional)
Dimensions W17 ⅜˝ - H29.0˝ – D14 ⅞˝
Shipping Weight
98 lbs (44 kg)
Main Controller / Control Display NGTB-900CP / P-950EH
Water Pressure CH Min 15 ~ Max 30 PSI
Connection Sizes
CH Supply/Return 1 ¼˝ NPT
Gas Inlet 3/4˝ NPT
Materials
Casing Cold Rolled Carbon Steel
Heat Exchanger
Primary Heat Exchanger : Stainless Steel
Sub Heat Exchanger : Stainless Steel
Safety Devices
Optical Flame Sensor, Low Water Cut O Sensor,
Flue Gas Limit Sensor, Overheat Cut O Device,
Gas Valve Operation Detector,
Water Temperature Sensor, Over-heat Limit Switch,
Air Pressure Sensor
2.2 Specications, 100 MBH