User manual TJERNLUND PAI-3,4,5,6,7 COMMERCIAL COMBUSTION AIR IN-FORCERS 8506003 REV B 0803

[. . . ] The IN-FORCER assures intake air is supplied by monitoring the air flow with a Fan Proving Switch. The main burner will be interrupted if a malfunction occurs. Complies with IMC and NFPA combustion air requirements. [. . . ] If wiring the PAI-7 motor for 208-230 VAC in conjunction with the UC1, a 115 VAC coil, DPST motor contactor rated for 1 H. P. If the UC1 control is not used, a 24 or 115 VAC relay (based on appliance control circuit voltage) suitable to handle the PAI motor load may be used to activate the IN-FORCER motor. IN-FORCER can be directly wired into 115 VAC appliance control circuits as long as contacts of the circuit can handle the additional load of IN-FORCER motor. Multiple Appliance Interlocks: Requires use of UC1 Universal Control and MAC1E for two appliances. UC1 and MAC4E are required for up to five appliances. MAC4Es can be daisy chained together for more than 5 appliances. Each millivolt appliance requires a WHKE millivolt interlock kit. If wiring the PAI-7 motor for 208-230 VAC in conjunction with the UC1, a 115 VAC coil, DPST motor contactor rated for 1 H. P. Fan Proving Switch: If using the UC1 Universal Control, 5 VDC board supplied power is switched through the Fan Prover. If not using the UC1, do not exceed 3 FLA or 1/10 HP through proving switch contacts or an isolation relay will have to be added. High Limit: Manual reset N/C contacts, open at 160° + 8° F, 14 FLA @120 VAC. The high limit switch will deactivate the IN-FORCER if temperature adjacent to high limit reaches the set point. Reset button is located on inside of cabinet on electrical box side of IN-FORCER. INTAKE HOOD DIMENSIONS IN-FORCER COMBUSTION AIR INTAKE DIMENSIONS COMMERCIAL IN-FORCER PERFORMANCE CURVES SAMPLE SPECIFICATION Furnish _____ fan powered combustion air intake system(s). System shall incorporate fan proving switch safety interlock and high ambient temperature cut-off in the event of mechanical room fire. Combustion air intake system shall include wall / roof mountable intake hood. Intake hood should be made of corrosion proof 5052 aluminum. IN-FORCER WEIGHT (LBS) ACTUAL SHIP COMPONENT WEIGHT WEIGHT PAI-3 Combustion Air Intake System* 20 48 PAI-4 Combustion Air Intake System 26 32 PAI-5 Combustion Air Intake System 60 60 PAI-6 Combustion Air Intake System 61 61 PAI-7 Combustion Air Intake System 95 95 PAI-3 Intake Hood* 12 * PAI-4 Intake Hood 15 27 PAI-5 Intake Hood 16 50 PAI-6 Intake Hood 16 50 PAI-7 Intake Hood 20 70 *The PAI-3 Intake System & Hood ship in the same box. [. . . ] The resistance for any combination of ducts and diffusers cannot exceed the maximum equivalent duct length shown in selection table. If interlocking IN-FORCER with more than one appliance of the same type, add the BTU/HR. input of each appliance to determine IN-FORCER model and maximum equivalent duct length and diameter. [. . . ]