TJERNLUND DRAFT INDUCER DJ-3 User manual

Improve Heating Efficiency

In-Line Draft Inducers assure positive draft

when restricted boilers and furnaces, poor

chimneys or negative pressures in build-

ings prevent proper exhaust of combus-

tion gases. The Venturi action starts air

moving up the stack instantly and keeps it

moving smoothly. In-Line inducers are

built for long-lasting, trouble-free service

and available in sizes and capacities to

meet virtually all heating system require-

ments. The Vari-Draft control permits

adjustment to individual job require-

ments. Vents/Chimneys utilizing In-Line

Draft Inducers must be vertically terminat-

ed above the roof line.

www.tjernlund.com •

800.255.4208

Residential Commercial Industrial

Reference Guide

Tjernlund

In-Line

Draft

Inducers

Use On Vertically Terminated Vent Systems Only

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

Everything Needed to Conform

Easy Installation

www.tjernlund.com •

800.255.4208

A Size For Every Application

Models

DJ-3, D-3 Models

I, IL, XL Model

1. Cut Slot in Pipe 2. Insert Inducer 3. Install Bands*

■Select a position between draft

hood, diverter or barometric

damper and chimney, locating

the Inducer as close to the

chimney as possible. Inducer

should be mounted 2-3 pipe

diameters away from a directional

change, i.e. elbows and tees, so turbulence is not created.

■Mount the Draft Inducer on vertical, horizontal or inclined vent

pipe. If used on a horizontal vent pipe, mount Inducer on bottom

of pipe, not on top, to avoid creating a heat trap in the Inducer.

■The motor shaft must be level and horizontal to avoid excessive

wear on bearing.

Three Basic

Steps...

Typical In-Line

Inducer and safety

interlock using

UC1 Control and

PS1505 Fan Prover

Tjernlund offers

six In-Line Draft

Inducers to fit

vent pipe sizes

from 3" to 24".

UC1 Control

PS1505

Fan Prover

* Models DJ-3 & D-3 fasten with screws.

■If change in vent pipe size is required, use a tapered

increaser or reducer.

■In-Line Inducers should be installed on a section of single

wall vent pipe in order to assure proper performance.

■Do not use In-Line Draft Inducers on condensing heating

equipment.

■We recommend the use of a carbon monoxide detector

in all mechanical rooms.

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.

with National Mechanical Codes

Chimney

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 equip-

ment. 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 appli-

cations with vent diameters from 4"–10", choose the DC4G

thru DC10G.

Used with any UC1 con-

trolled Inducer to inter-

lock additional 24/115

VAC heaters. Powered by

and communicates with

the UC1 through a factory

wired whip. For one

additional 24/115 VAC

heater add the MAC1E.

To interlock up to four

more additional 24/115

VAC heaters, add the

MAC4E. MAC4Es can be

daisy chained together for greater than 5 heaters. Important:

Total combined BTU/hr. input of all heaters and total equivalent

pipe lengths must be within Inducer’s capacity.

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. 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.

Solid state control interlocks

with virtually any burner control

circuit. 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.

Universal Control

Model UC1

Millivolt Safety Interlock Kit

Model WHKE Barometric Draft Controls

Models DC4, DC5, DC6, DC7, DC8, DC9, DC10

DC4G, DC6G, DC7G, DC8G, DC9G, DC10G

Multiple Appliance Controls

Models MAC1E, MAC4E

www.tjernlund.com •

800.255.4208

For additional information request brochure #8500004

For additional information request brochure #8500490

Accessories

The UC1 is a standardized control for Tjernlund Inducers/Venters.

It offers many installation, operational and safety benefits.

Model Dimensions

Model

DJ-3

D-3

7 1/2

9 1/8

14 1/2

18 7/8

27 1/2

8 1/2

9 1/2

13 1/2

14 3/4

18 1/2

16 3/4

5 7/8

8 3/4

10 1/2

2 5/8

3 1/8

4 1/8

5 1/8

Unit

Dimensions (In.) Slot

7 5/8

8 5/8

12 3/4

16 3/4

24 1/2

Ship

Weight

8 Lbs

10 Lbs

31 Lbs

34 Lbs

53 Lbs

176 Lbs

“H”—Overall Height

“D”—Overall Depth

“W”— Overall Width

“X”—Pipe Slot Width

“Y”—Pipe Slot Height

TJERNLUND PRODUCTS, INC.

1601 Ninth Street White Bear Lake, MN 55110-6794

Phone: 651.426.2993 800.255.4208 Fax: 651.426.9547

Visit our web site: www.tjernlund.com

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.

2. 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.

3. 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.

4. Where pressure require-

ments 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 in order to assure

proper performance.

Model Selection Table and Electrical Data

Model

DJ-3

D-3

Pipe

Size

In.

69,000

105,000

111,000

100,000

270,000

356,000

360,000

320,000

900,000

1,110,000

1,250,000

1,030,000

1,460,000

2,080,000

1,920,000

1,840,000

900,000

650,000

4,000,000

3,900,000

2,800,000

1,500,000

5,300,000

3,500,000

Gas Firing

with Draft

Hood

2700F

Flue Gas

S.P.

.034

.042

.043

.041

.063

.073

.075

.068

.125

.135

.140

.128

.145

.170

.160

.159

.120

.099

.250

.240

.195

.150

.290

.220

CFM

190

246

259

217

590

765

850

710

1010

1370

1325

1270

620

450

2760

2650

1935

1035

3690

2415

72,000

109,000

104,000

34,000

330,000

377,000

330,000

222,000

1,200,000

1,330,000

1,260,000

710,000

1,970,000

2,460,000

2,230,000

1,470,000

650,000

440,000

4,000,000

3,250,000

2,100,000

1,100,000

5,200,000

3,750,000

Gas Firing

with Barometric

Draft Control

3900F

Flue Gas

S.P.

.047

.053

.052

.042

.085

.090

.085

.075

.143

.150

.145

.115

.175

.185

.182

.158

.113

.095

.260

.240

.175

.125

.270

.220

CFM

166

190

166

110

603

653

615

357

989

1240

1120

740

340

220

2010

1660

1079

527

2440

1660

58,000

92,000

74,000

25,000

295,000

300,000

230,000

123,000

1,100,000

840,000

400,000

1,700,000

1,900,000

1,500,000

825,000

350,000

200,000

3,300,000

2,100,000

1,200,000

503,000

3,600,000

2,900,000

Oil Firing

with Barometric

Draft Control

5300F

Flue Gas

S.P.

.048

.057

.052

.035

.092

.093

.080

.065

.147

.148

.136

.100

.180

.170

.135

.095

.075

.230

.190

.150

.110

.240

.218

CFM

163

169

118

566

440

211

900

1010

789

453

184

106

1763

1103

626

266

1870

1550

Therm

Volts HZ RPM Watts Amps Prot.

115 60 1550 35 .43 Imp.

Prot.

115 60 1550 74 .96 Yes

115 60 1725 1/4 HP 5.4 Yes

115 60 1725 1/3 HP 6.0 Yes

115 12.6

208 60 1725 1 HP 6.2 Yes

230 6.3

208 6.3

230 60 1725 2 HP 6.4 No

460 3.2

Heater

BTU

Input

Heater

BTU

Input

Heater

BTU

Input

Electrical Specifications

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 side wall vent system options.

Tjernlund Products also offers:

Auto-Draft variable & fixed speed Inducers for roof top or side wall

venting. Reduce vent diameters by up to 50% and overcome convolut-

ed vent layouts. Fan speed is automatically regulated based on a user

set manifold/vent pressure, resulting in perfect draft and true energy

savings. Virtually unlimited capacities.

Combustion Air In-Forcers provide dedicated combustion air for safer,

more efficient equipment operation. Eliminates burner control lockouts

& oil odors associated with backdrafting. Ideal for "confined space" and

electric to oil or gas conversions. Residential and commercial fixed &

variable speed capacities up to 6000 CFM available.

Auto-Draft®Inducer

Combustion Air

In-Forcer™

Note: Tjernlund

Products Inc. reserves

the right to make

changes to specifica-

tions without notice.

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