SOLVES VENTING PROBLEMS CAUSED BY		TYPICAL APPLICATIONS
	Undersized Chimneys		Boilers/Furnaces
	Negative Pressures		Water Heaters
	Long Horizontal Vent Connectors		Modular Boiler Systems
	Down Drafts		Multiple Appliances
	Cold Equipment Starts		Bakery Ovens
	Restrictive Heat Exchangers/Combustion chambers		Factory Processes

Tjernlund In-Line Draft Inducers assure positive draft when restricted boilers and furnaces, poor chimneys or negative pressures in buildings prevent proper exhaust of combustion gases.  The venturi action starts air moving up the stack instantly & keeps it moving smoothly.  These units are quick and easy to install and completely automatic in operation.  In-Line Draft Inducers are built for long-lasting, trouble-free service and available in sizes and capacities to meet virtually all heating system requirements.  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.

EVERYTHING NEEDED TO CONFORM WITH NATIONAL MECHANICAL CODES

Fan Prover Safety Interlock
Model PS1505
To satisfy national mechanical codes for oil and gas installations, Draft Inducers must be properly interlocked with burner circuits.  The PS1505 Fan Proving Switch monitors pressure within the Inducer housing to verify Inducer operation.  Used in conjunction with the UC1 Universal Control, it assures compliance with codes and simplifies electrical interlock with all 24/115 VAC burner circuits.  The PS1505 is not compatible with millivolt gas valves.

ACCESSORIES

The UC1 is a standardized control for Tjernlund Inducers/Venters.  It offers many installation, operational and safety benefits.

Universal Control Model UC1 The UC1 can be interlocked with virtually any burner control circuit.  Features include: adjustable pre & post purge, LED status / diagnostic indicators, 10 second prover switch delay to avoid burner start up and wind induced short cycling.  Interlocks with any 24-120 VAC burner control circuit and also includes “dry” contact actuation option. Selectable voltage eliminates false activation by burner control circuits.  After each burner cycle the UC1 will continue to operate in post-purge mode to allow the Inducer/Venter to purge the heater and vent of residual flue gases.  A factory post-purge time is set at 2 minutes and is adjustable up to 16 minutes.

Multiple Appliance Controls Models MAC1E, MAC4E The MAC1E Multiple Appliance Control is used in conjunction with the UC1 Universal Control to easily interlock up to one additional 24 VAC, 115 VAC or millivolt controlled appliance.  It activates the Venter through its connections to the UC1 and in turn relies on the UC1 Fan Prover safety circuit (P1 & P2) to allow its interlocked appliances to operate.  Any pre/post-purge settings on the UC1 will be defaulted to the MAC1E. The MAC1E puts an end to difficult and costly job site wiring nightmares.  Circuit board housed in oversized 18 gauge electrical box with multiple knock-outs for easy wiring connections.

The MAC4E Multiple Appliance Control is used in conjunction with the UC1 Universal Control to easily interlock up to 4 additional 24 VAC, 115 VAC or millivolt controlled appliances.  It activates the Venter through its connections to the UC1 and in turn relies on the UC1 Fan Prover safety circuit (P1 & P2) to allow its interlocked appliances to operate.  Any pre/post-purge settings on the UC1 will be defaulted to the MAC4E. The MAC4E puts an end to difficult and costly job site wiring nightmares.  Circuit board housed in oversized 18 gauge electrical box with multiple knock-outs for easy wiring connections.

Millivolt Safety Interlock Kit Model WHKE For use with the 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.  Includes JA1 thermocouple junction adapter.  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.  May be used with chimney vented or power vented 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.

MODEL SECTION TABLE AND ELECTRICAL DATA

IMPORTANT: Vents/Chimneys utilizing In-Line Draft Inducers must be vertically terminated above the roof line. Do not use for side wall venting. Consult factory for proper Gas or Oil Side Wall Vent options.  Tjernlund's Fixed & Variable Speed Specified Systems are also available with virtually unlimited capacities.

NOTE:
Inputs shown above 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.

Where pressure requirements are unknown, or believed to be unusually severe, ask for complete performance curves or consult factory.

Draft Inducers should be installed in single wall vent pipe to assure proper performance.

MODEL DIMENSIONS