6Document: GFH-NT 1500-4000 IM 14 DEC 2016Gas Fired Heater Instructions©2016 NOVATEC, Inc. All Rights Reserved1.4 UTILITIES - NATURAL GASDESCRIPTION GFH-1500 GFH-1750 GFH-2000 GFH-2500Supply Pressure (MAX) (PSI/”WC) 5.0/140 5.0/140 5.0/140 5.0/140Supply Pressure (MIN) (PSI/”WC) 1.0/28 1.0/28 1.0/28 1.0/28Supply Connection (“ NPT) 3/4 3/4 1 1Max. Burner Capacity (MMBTU) 1.0 1.0 1.5 1.5Max. BTU Input (BTU) 540,000 630,000 720,000 810,000Flue Connection (“ OD) 4 6 6 6DESCRIPTION GFH-3000 GFH-3500 GFH-4000 FutureSupply Pressure (MAX) (PSI/”WC) 5.0/140 5.0/140 5.0/140Supply Pressure (MIN) (PSI/”WC) 1.0/28 1.0/28 1.0/28Supply Connection (“ NPT) 1 1 1Max. Burner Capacity (MMBTU) 2.0 2.0 2.0Max. BTU Input (BTU) 1,080,000 1,260,000 1,260,000Flue Connection (“ OD) 6 6 6
