combination of fresh air and vent ft. (4” diameter) PTS/U 40/25 20 45 50 75 PTS/U 50/30 20 45 50 75 PTS/U 50/30 30 35 40 65 PTS/U 75/50 20 45 50 75 PTS/U 75/50 30 35 40 65 PTS/U 100/65 30 45 50 75 PTS/U 100/65 40 35 40 65 PTS/U 125/80 30 60 50 75 PTS/U 125/80 40 50 40 65 PTS/U 125/80 50 40 30 55 PTS/U 150/100 40 60 50 75 PTS/U 150/100 50 50 40 65 PTS/U 150/100 60 40 30 55 PTS/U 175/110 50 60 50 75 PTS/U 175/110 60 50 40 65 PTS/U 175/110 70 40 30 55 PTS/U 175/110 50 60 40 65 PTS/U 200/125 60 50 3

Gas pressures are shown in the table below. GAS TYPE GAS PRESSURE TABLE SUPPLY PRESSUREMANIFOLD PRESSURE High Low Minimum* Maximum Natural Gas 3.5” W.C. 1.4” W.C. 5” W.C. 14” W.C. Propane Gas 10.0” W.C. 4.0” W.C. 11” W.C. * Minimum permissible gas supply pressure for purpose of input adjustment. 14” W.C. –30– Form #43343530 JJuly 08 /C > / $8#1%<;"->#86%4>/, > / $8#1%<;"->* N -/ &$'* / &3',0/+/C4+/ DD /-,7!/"**"!,4/,+."+.

Multiple Heater Vertical venting arrangement. / . < . &+./'3%&2 '/ !O "!#) &$)2 ' 3 &99 ' 3 &99 ' & ; '5% . - > ! D A D D ; >. • Form #43343530 –36– JJuly 08 COMMON VENTING OF MULTIPLE HEATERS IN CONFINED SPACES IS PROHIBITED. If any heater connected to a common vent system for multiple heaters is found inoperative, the heater should be disconnected from the vent system and its entrance into the vent system capped. Multiple Heater Horizontal venting arrangement. >.

Please present this manual to the owner when you leave the job site. ..WARNING: Improper installation, adjustment, alteration, service, or maintenance can cause property damage, injury or death. Read the installation, operation and maintenance instructions thoroughly before installing or servicing this equipment. IF YOU SMELL GAS: . FOR YOUR SAFETY DO NOT try to light any appliance. DO NOT touch any electrical switch; DO NOT use any DO NOT store or use gasoline or other telephone in your build

Form #43343530 –44– JJuly 08 B; 4 ? D + 35. Q4 ?C 35.

d) If the meter reads less than the minimum or if reading is unsteady: .. Make sure burner flame is capable of providing a good rectification signal. .. Make sure fasteners securing igniter/sensor are tightened to assure correct positions. DO NOT relocate igniter/sensor. .. Check for excessive (over 1000.F) temperature at ceramic insulator on flame sensor. Excessive temperature can cause short to ground. DO NOT relocate igniter/sensor. .. Check for cracked ceramic insulator, which can cause shor

7) When the thermostat is satisfied with high heat, the heater will switch to low fire. 8) To shut off the heater, rotate the gas valve knob clockwise to the “OFF” position and turn off the gas at the manual gas shut off valve supplying the heater and disconnect the electrical supply. NOTE: THE LIGHTING AND SHUTDOWN INSTRUCTIONS ARE ALSO SHOWN ON THE PERMANENT NAMEPLATE LABEL ATTACHED TO THE HEATER. Form #43343530 July 08 –39– 19.0) SEQUENCE OF OPERATION The chart below shows the sequence of ope

Tube less Flanges (Hot Rolled) 1 1 3 3 41932051 5 Ft. Tube less Flanges (Hot Rolled) -2 -2 43319100 Reflector, 9’ 11.” 2 2 4 4 43319050 Reflector, 4’ 11 .” -2 -2 30462980 Tube Coupling 1 3 3 5 43318000 Tube Hanger/Support Bracket, 13” 2 4 4 6 43980010 Wire Hanger 2 4 4 6 Form #43343330 May 08 –7– Body Fastener Kit (included in body packages) 42907190 42907210 42907210 42907221 42873000 U-Bolt 2 4 4 6 02127110 Hex Nut, 5/16-18 5 8 8 13 02189020 HWHSM Screw, #10-16 x .” TEKS 8 14 14 24 U-Bend Pack

BB / D . B . . . IMPORTANT BEFORE CONNECTING THE GAS TO THE HEATER 1. Connect to the supply tank or manifold in accordance with the latest edition of National Fuel Gas Code (ANSI Z223.1), and local building codes. Authorities having jurisdiction should be consulted before the installation is made. (In Canada, refer to the latest edition of CAN Standard B.149-1 & -2, Installation Codes for Gas Burning Appliances and Equipment.) 2. Check that the gas fuel on the burner rating