User manual TJERNLUND IN-LINE DRAFT INDUCER REFERENCE GUIDE 8500590 REV. B 0403

[. . . ] The Vari-Draft control permits adjustment to individual job requirements. Vents/Chimneys utilizing In-Line Draft Inducers must be vertically terminated above the roof line. Typical Applications: · · · · · · Boilers/Furnaces Water Heaters Modular Boiler Systems Multiple Appliances Bakery Ovens Factory Processes Solves Venting Problems: · · · · · · Undersized Chimneys Negative Pressures Long Horizontal Vent Connectors Down Drafts Cold Equipment Starts Restrictive Heat Exchangers/Combustion Chambers Use On Vertically Terminated Vent Systems Only www. tjernlund. com · 800. 255. 4208 A Size For Every Application Tjernlund offers six In-Line Draft Inducers to fit vent pipe sizes from 3" to 24". Models DJ-3, D-3 Models I, IL, XL Model HD Easy Installation Three Basic Steps. . . 1. Install Bands* s Select a position between draft hood, diverter or barometric damper and chimney, locating the Inducer as close to the chimney as possible. [. . . ] Features include: adjustable pre and post purge, LED status/diagnostic indicators, prover switch delay to avoid burner start up and wind induced short cycling. Interlocks with any 24/115 VAC burner control circuit and also includes "dry" contact actuation option. Selectable voltage eliminates false activation by burner control check circuits. Multiple Appliance Controls Models MAC1E, MAC4E Used with any UC1 controlled Inducer to interlock additional 24/115 VAC heaters. Powered by and communicates with the UC1 through a factory wired whip. To interlock up to four more additional 24/115 VAC heaters, add the MAC4E. input of all heaters and total equivalent pipe lengths must be within Inducer's capacity. For additional information request brochure #8500004 Millivolt Safety Interlock Kit Model WHKE For use with UC1 Universal Control, MAC1E or MAC4E auxiliary controls. The WHKE gas pressure switch actuates the Inducer through the A - B dry contacts. The Linear Limit switch disables the heater in the event of a venting malfunction. To interlock millivolt water heater(s) only with a UC1 controlled Inducer add a WHKE for each millivolt heater. To interlock a millivolt water heater and one 24/115 VAC furnace or boiler with a UC1 controlled Inducer, add a WHKE and a MAC1E. Barometric Draft Controls Models DC4, DC5, DC6, DC7, DC8, DC9, DC10 DC4G, DC6G, DC7G, DC8G, DC9G, DC10G Quality engineered and manufactured to maintain a consistent draft on a wide range of oil and gas fired heating equipment. For fan assisted gas, oil or solid fuel applications with vent diameters from 4"­10", choose the DC4 thru DC10. For LP and natural gas applications with vent diameters from 4"­10", choose the DC4G thru DC10G. For additional information request brochure #8500490 Model Dimensions Model Unit Dimensions (In. ) Slot "H" -- Overall Height "D" -- Overall Depth "W"-- Overall Width "X" -- Pipe Slot Width "Y" -- Pipe Slot Height H DJ-3 D-3 I IL XL HD 7 1/2 9 1/8 14 1/2 17 18 7/8 27 1/2 W 8 1/2 9 1/2 13 1/2 14 3/4 18 1/2 16 3/4 D 5 7/8 7 8 3/4 10 10 1/2 25 X 2 5/8 3 1/8 4 4 1/8 5 1/8 6 Y 7 5/8 8 5/8 12 3/4 15 16 3/4 24 1/2 Ship Weight 8 Lbs 10 Lbs 31 Lbs 34 Lbs 53 Lbs 176 Lbs www. tjernlund. com · 800. 255. 4208 Model Selection Table and Electrical Data 1. Inputs shown are believed to be maximum capacities for inducers when mounted on pipe sizes shown for ordinary jobs where a moderate amount of mechanical induced draft is required. Consideration is given to typically higher static pressure requirements for larger installations, for the type of fuel burned and for the type of draft control installed. Some ratings may only be valid for extremely short vent lengths due to excessive pressure loss; i. e. the Model IL gas firing with draft hood in 10" pipe at 2, 080, 000 BTU/hr. [. . . ] Fan speed is automatically regulated based on a user set manifold/vent pressure, resulting in perfect draft and true energy savings. Combustion Air In-Forcers provide dedicated combustion air for safer, more efficient equipment operation. Eliminates burner control lockouts & oil odors associated with backdrafting. [. . . ]