Tjernlund VSUB User Manual
Copyright © 2004, Tjernlund Products, Inc. All rights reserved. P/N 8504114
REV. 02/04
THESE INSTRUCTIONS ARE INTENDED AS AN AID TO QUALIFIED, LICENSED
SERVICE PERSONNEL FOR PROPER INSTALLATION, ADJUSTMENT AND
OPERATION OF THIS UNIT. READ THESE INSTRUCTIONS THOROUGHLY
BEFORE ATTEMPTING INSTALLATION OR OPERATION. FAILURE TO FOLLOW
THESE INSTRUCTIONS MAY RESULT IN IMPROPER INSTALLATION, ADJUSTMENT, SERVICE OR MAINTENANCE POSSIBLY RESULTING IN FIRE, ELECTRICAL SHOCK, CARBON MONOXIDE POISONING, EXPLOSION, PERSONAL
INJURY OR PROPERTY DAMAGE.
DO NOT DESTROY. PLEASE READ CAREFULLY AND KEEP IN
A SAFE PLACE ON JOB SITE FOR FUTURE REFERENCE.
MODELS
VSUB8
VSUB12
VSUB16
VSUB20
AUTO-DRAFT
®
VSUB-SERIES
VSUB BLOWERS
For providing combustion air; sidewall or
vertically venting heating appliances, dryers
and ovens. Can be installed indoors or
outdoors.
TJERNLUND PRODUCTS, INC.
1601 Ninth Street • White Bear Lake, MN 55110-6794
PHONE (800) 255-4208 • (651) 426-2993 • FAX (651) 426-9547
Visit our web site • ww w.tjernlund.com
Listings:
ETL CERTIFIED TO:
UL 378 - Draft Equipment / Variable Speed
UL 705 - Power Ventilators
CSA-CAN3-B255-M81
RECOGNIZE THIS SYMBOLAS AN INDICATION OF IMPORTANT SAFETY INFORMATION!
!
TABLE OF CONTENTS
PAGE(S)
VSUB BLOWER DESCRIPTION ................................................................................................................................. 1
DIMENSIONS AND SPECIFICATIONS ................................................................................................. ....................... 1
VSUB FAN PERFORMANCE CURVES..........................................................................................................................2
INSTALLATION RESTRICTIONS & CAUTIONS........................................................................................................... 3
ADDITIONAL REQUIREMENTS BASED ON DRAFT INDUCER OR COMBUSTION AIR APPLICATION ............... 3-4
DRAFT INDUCER TERMINATION CLEARANCES FOR CANADIAN & U.S. INSTALLATIONS............................... 4-6
COMBUSTION AIR INTAKE CLEARANCES ................................................................................................................ 6
COMBUSTION AIR INTAKE HOOD/LOUVER OPENING SIZING............................................................................. 6-7
VSUB INSTALLATION ............................................................................................................................................... 7-8
PSA-1 FAN PROVING SWITCH INSTALLATION ...................................................................................................... 8-9
WIRING .....................................................................................................................................................................9-11
PSA-1 SAFETY INTERLOCK AND DRAFT ADJUSTMENT SET-UP PROCEDURE..............................................12-13
SAFETY INTERLOCK TEST.........................................................................................................................................13
COMBUSTION AIR ...................................................................................................................................................... 13
MAINTENANCE, SERVICE & HOUSING ROTATION.............................................................................................13-14
HOW TO OBTAIN SERVICE & LIMITED WARRANTY ..........................................................................................14-15
REPLACEMENT PARTS ..............................................................................................................................................15
Tjernlund Products welcomes your comments and questions. Call us at 800-255-4208, Fax 651-426-9547, Email us at
fanmail@tjfans.com or write to: Customer Service, Tjernlund Products, Inc., 1601 Ninth Street, White Bear Lake, MN 55110-6794.
VSUB-SERIES UNIVERSAL BLOWER DESCRIPTION
The VSUB-Series Universal Blowers are a multi-purpose adjustable-fixed speed or automatic-variable speed blower. It can vent natural gas, LP-gas and oil fired heating appliances, clothes dryers or be used as a utility blower that will handle up to 575° F. It can also
be used as a adjustable-fixed speed or as an automatic-variable speed combustion air intake blower. All models are supplied with the
model PSA-1 Fan Proving Switch which will disable the burner(s) if an exhaust/supply malfunction should occur, and a FFP-1 fire
/freeze limit that will shut the VSUB Blower off in the event of extreme temperature swings for combustion air applications. The VSUB
Blower is rated for indoor or outdoor installation. Use positive pressure rated vent on the discharge side of the blower when venting
flue gases and mounting indoors. Refer to heating appliance manufacturer's instructions regarding specific venting requirements.
DIMENSIONS AND SPECIFICATIONS
1
3x230/460
2875
1.6
66
7 7/8
5 1/4
16 1/2
28 1/2
14 1/2
10 1/4
2125
3.2
153
11 7/8
9 5/8
21 1/2
33
17 3/8
13
2115
6.0
218
15 7/8
12
27 3/4
42 3/8
23 1/4
16
1760
8.8
319
19 7/8
14 1/2
32 3/4
44 3/4
26 1/2
23 1/4
Yes with
VFD
VSUB8 VSUB12 VSUB16 VSUB20
Does not include Amp load of VFD Drive.
in
in
in
in
in
in
lbs
@ 208 V
VAC
A
C
E
G
I
K
Dimensions
Weight
Full Speed
Max RPM with VFD
Voltage
MODEL
Variable Speed Motor
Figure 8067001 3/3/04
Power Rating hp 1/3 1 32
L
J
H
in 18 1/2
in
in
15 1/2
30 1/2
22
35
18 7/8
F
D
B
in
in
7 7/8
7 5/8
in 10
10
11 7/8
12 1/2
25 1/2
28
46 3/4
26 3/4
24 3/4
44 3/8
14
14
19 3/415 7/8
13 1/4
14
M
O
N
8in
in
in
23 1/2
13 3/8
9
28 1/2
15 1/2
19
43 3/4
23 1/2
15 3/8
34 3/4
18 7/8
3x230/460 3x230/460 3x230/460
@ 460 V
0.8 1.5 2.8
4.1
Yes with
VFD
Yes with
VFD
Yes with
VFD
5.6
@ 230 V
1.5 3.0 8.2
Amps
*
O
L
END VIEW
M
N
K
MOUNTING
LOCATION (4)
D
TOP VIEW
B
ØA
ØF
E
C
G
H
I
J
INCLUDED SQUARE
TO ROUND ADAPTER
COMPLETE VSUB-SERIES UNIVERSAL BLOWER SYSTEM SOLUTIONS
This installation manual does not contain any vent system design documentation. Installation and use of Tjernlund controls like the
CPC-2 Constant Pressure Controller, VFD Series Variable Frequency Drives, EXP-4 Appliance Interlock Expansion boards, UC-1
Universal Control or MAC1E and MAC4E Multiple Appliance Controls are not covered by this manual. Please refer to those installation manuals for details.
VSUB-SERIES FAN PERFORMANCE CURVES
VSUB Blower performance was independently tested by an accredited AMCAcertified testing facility.
Selection of a VSUB Blower as a Draft Inducer involves determination of the maximum volume of gas to be handled, the density of
the gas and the maximum static pressure which the fan must overcome. Using the VSUB Blower as a combustion air intake or commercial clothes dryer vent blower, involves the determination of the maximum volume of air to be handled and the maximum static
pressure which the fan must overcome.
Variable speed VSUB Blowers can operate at virtually any point to the left of the performance curve. For sidewall termination applications add 0.60" W.C. to vent system resistance to accommodate the effects of wind loading.
Consideration must be given to the temperature of the gases being handled and the elevation above sea level of the installation when
selecting a VSUB Blower. Blower performance curves are based on standard air conditions @ sea level.
Please feel free to contact us for application and model selection assistance by calling 800-255-4208 or email us at
fanmail@tjfans.com. Vent layout or other information can be faxed to 651-426-9547.
2
0
0
CFM (STD AIR 70 DEGREES F)
STATIC PRESSURE IN W.C.
0
0
100 200 300 400 500 600 700 800 900 1000
1000900800700600500400300200100
0.5
1
1.5
2
2.5
3
3.5
4 4
3.5
3
2.5
2
1.5
1
0.5
VSUB8 PERFORMANCE
3
2.5
2
1.5
1
0.5
0
0 500 1000 1500 2000 2500
CFM (STD AIR 70 DEGREES F)
STATIC PRESSURE IN W.C.
0
0
0.5
1
1.5
2
2.5
3
VSUB12 PERFORMANCE
2500200015001000500
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
0 500 1000 1500 2000 2500 3000 3500 4000 4500
CFM (STD AIR 70 DEGREES F)
STATIC PRESSURE IN W.C.
0
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
45004000350030002500200015001000500
VSUB16 PERFORMANCE
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
0
500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000
CFM (STD AIR 70 DEGREES F)
STATIC PRESSURE IN W.C.
600055005000450040003500300025002000150010005000
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
VSUB20 PERFORMANCE
3
INSTALLATION RESTRICTIONS
Failure to install, maintain and/or operate the VSUB Blower in accordance with manufacturer's instructions may result in
conditions which can produce bodily injury and property damage.
The VSUB Blower must be installed by a qualified installer in accordance with these instructions and all local codes or in their
absence in accordance with the latest edition of The National Fuel Gas Code (NFPA 54), NFPA211 or 31 when applicable, the latest
edition of the National Electrical Code (NFPA 70) and the Occupational Safety and Health Act (OSHA) when applicable. In the
absence of local codes in Canada, installations must comply with the Canadian Electrical Code (CSA Std 22.1), the latest edition of
the Natural Gas Installation Code (CAN/CGA-B149.1), the Propane Installation Code (CAN/CGA-B149.2) and the Installation Code for
Oil Burning Equipment (CSA Std B139-M91).
Improper installation can create a hazardous condition such as an explosion, fire, electrical shock or carbon monoxide poisoning
resulting in property damage, personal injury or death.
1. The VSUB Blower is intended to be installed on natural gas, LP-gas or oil-fired heating appliance systems. The VSUB Blower is
not Listed for use on condensing equipment in Canada.
2. The VSUB Blower was tested with exit flue gas temperatures of 575
O
F (300OC).
3. The VSUB Blower may not be installed on incinerators, incinerating toilets or solid-fuel burning appliances.
4. The VSUB Blower shall not be installed on an appliance with an automatic valve having a manual opener unless the manual
opener has been rendered inoperative or the automatic valve has been replaced with a valve not equipped with a manual opener.
5. VSUB Blowers not utilizing the Tjernlund CPC-2 Constant Pressure Control may only be installed on appliances equipped
with a draft hood, draft diverter or barometric draft control.
6. Tjernlund’s Model FFP-1, Fire and Freeze Protection Limit must be installed when using the VSUB as a combustion air intake to
protect the boiler room from temperature extremes. Do not
install FFP-1 when VSUB is used as a draft inducer. It i s designed to
disrupt power to a combustion air supply blower in the event of a boiler room fire or an extended period where frigid outdoor air
supply could cause pipes to freeze.
D
Never operate a mechanical draft or combustion air system without a proving device that proves the flow of flue gasses or combustion
air and is interlocked with all of the heating appliances. If installing a VSUB Blower in conjunction with a CPC-2 controller, the CPC-2
provides the safety interlock. If installing a VSUB Blower without a CPC-2 controller the PSA-1 fan proving switch must be installed in
conjunction with a UC1 Universal interlock control and any additional MAC-Series multiple appliance controls necessary to interlock
all heaters being vented.
IONS
INSTALLER CAUTIONS
Disconnect the power supply when making wiring connections or when working around the fan impeller and motor. Failure
to do so can result in electrical shock, personal injury, death or property damage.
1. The VSUB Blower must be interlocked with the heating appliance burner(s).
2. Plan the vent system so that the code required clearances are maintained from plumbing, wiring and combustibles.
3. Make certain the power supply is adequate for VSUB Blower motor and VFD requirements. Do not add the VSUB Blower to a
circuit where the total load is unknown.
4. The installer must verify that the appliance on which the VSUB Blower will be installed is in a safe operating condition.
Consult appliance manufacturer’s Instructions for details.
5. VSUB Blower housing is single wall. Standard clearances to combustibles must be maintained when venting flue products.
6. VSUB Blowers must use the appropriate Tjernlund VFD model.
REQUIREMENTS WHEN USING THE VSUB BLOWER FOR COMBUSTION AIR INTAKE
Unless properly screened or guarded to prohibit contact with the blower wheel, a minimum of 3' of pipe must be connected to the
inlet/discharge of the VSUB Blower.
Use the FFP-1, Fire and Freeze Protection Limit that was provided in the VSUB Blower. Place this limit in the physical location as
defined in the limit installation instructions and wire into the control circuit as recommended for your type of installation. This limit is
designed to shut off the combustion air supply if excessive heat or extremely cold air is present in the mechanical room. Do not mount
the limit next to hot or cold surfaces or in the flow of the blower discharge.
1. Make sure the VSUB specified is large enough to supply the combustion air for all heating appliances in the mechanical room.
Tjernlund Products, Inc. is not responsible for vent layout, appliance type, size or design changes to the air supply system. The
Mechanical room must be sealed to keep the supplied air from being bypassed to other parts of the building or outdoors. We recommend that the blower be oversized by 25% to accommodate any unforeseen leakage.
4
2. If possible, discharge the air at or towards ceiling levels to mix the supply air with the warmer stratified mechanical room air.
Consideration should be given to the use of ducts and diffusers to evenly distribute the air throughout the mechanical room. NOTE:
Do not discharge air directly across water lines, temperature control devices, or draft hoods/draft controls. If correctly installed no
additional air heating means will be required beyond what heating means would be required for conventional air supply louvers.
3. Give careful consideration to the air inlet opening as it enters the building to connect to the supply duct system. Too high of a capture velocity can entrain rain or snow into the mechanical room. We recommend a capture velocity no greater than 800 feet per
minute for rain and 650 feet per minute for snow. Capture velocity is calculated by dividing the maximum Cubic Feet per Minute
(CFM) of air by the Square Feet of area it is pulled through. 1000 CFM through a 1' x 2' opening, would have a capture velocity of
500' per minute. Note: Inlet screens and louvers are typically not fully open and have an open area percentage. Make sure to add
area to the air opening to compensate for the reduction caused by the screen and/or louver blade.
4. The inlet shape has a bearing on the entrainment and capture velocity of the incoming air. In general, long tapered openings are
preferred to short flat openings. Inlet screening will help spread the velocity more evenly across the air inlet opening.
5. If possible, use gravity to your advantage, rain and snow are harder to pull up than they are to pull sideways. Do not design an inlet
opening that points upwards.
6. Refer to the Industrial Ventilation Manual produced by the American Conference of Governmental Industrial Hygienist or the
ASHRAE Fundamentals handbook for more in depth information.
REQUIREMENTS WHEN USING THE VSUB BLOWER FOR MECHANICAL DRAFT
1. Make sure the VSUB Blower specified is large enough to remove the exhaust gasses for all the heating appliances connected to it.
Tjernlund Products, Inc. is not responsible for vent layout, appliance type or design changes to the heating system.
2. For Vertical discharges: The VSUB Blower housing can be rotated to facilitate a vertical discharge. Make sure the clearance to
combustible surfaces inside and outside the building are followed as discussed in your state and local codes or in their absence,
the National fuel gas code NFPA 211 and NFPA 54 or 31. Canadian installations must comply with local codes or in their absence,
the latest edition of the Natural Gas Installation Code (CAN/CGA-B149.1), the Propane Installation Code (CAN/CGA-B149.2) and
the Installation Code for Oil Burning Equipment (CSA Std B139-M91). The VSUB Blower is designed for variable speed applications and the discharge velocity from the outlet of the blower or vent system can be similar to a conventional chimney.
For Horizontal discharges: The VSUB Blower can be rotated if necessary to facilitate a horizontal discharge. Make sure the clearance to combustible surfaces inside and outside the building are followed as discussed in your state and local codes or in their
absence, the National fuel gas code NFPA 211 and NFPA 54 or 31. Canadian installations must comply with local codes or in their
absence, the latest edition of the Natural Gas Installation Code (CAN/CGA-B149.1), the Propane Installation Code (CAN/CGA-B149.2)
and the Installation Code for Oil Burning Equipment (CSA Std B139-M91). In addition, we strongly recommend that an exhaust termination be developed that has an outlet opening at least 1.5 times the area of the outlet area of the VSUB being used. If the discharge opening is screened, verify that the screen does not reduce the open area to less than that of the connected vent pipe. The
termination should not direct the flue gasses down the building exterior and should not face directly into wind. The VSUB is rated to
handle 575°F flue gases. Consider the application temperature when developing the termination.
Never operate a mechanical draft or combustion air system without a proving device that proves the flow of flue gasses and is interlocked with all of the heating appliances. If installing a VSUB Blower in conjunction with a CPC-2 controller, the CPC-2 provides the
safety interlock. If installing a VSUB Blower without a CPC-2 controller the PSA-1 fan proving switch must be installed in conjunction
with a UC1 Universal Control and any additional MAC-Series multiple appliance controls necessary to interlock all heaters being vented.
MECHANICAL DRAFT TERMINATION CLEARANCES FOR CANADIAN INSTALLATIONS
In the absence of local codes in Canada, installations must comply with the latest edition of the Natural Gas Installation Code
(CAN/CGA-B149.1), the Propane Installation Code (CAN/CGA-B149.2), the Installation Code for Oil Burning Equipment (CSAStd
B139-M91) or as follows, (See Diagram A).
• A venting system shall not terminate underneath a veranda, porch, or deck, or above a paved sidewalk or a paved driveway
that is located between two buildings, and that serves both buildings.
• The exit terminals of mechanical draft systems shall not be less than 2.13m (7ft) above grade when located adjacent to a paved
sidewalk or driveway.
• Aventing system shall not direct flue gases towards brickwork, siding, or other construction, in such a manner that may cause
damage from heat or condensate from the flue gases.
• A venting system shall not direct flue gases so as to jeopardize people, overheat combustible structures, or enter buildings.
A
venting system shall not terminate within 1.8 m (6ft) of the following:
• A window, door or mechanical air supply inlet of any building, including soffit openings
• A gas service regulator vent outlet
• A combustion air inlet
• A property line
• A direction facing combustible materials or openings of surrounding buildings
A
venting system shall not terminate within 1m (3ft) of the following:
• Above a gas meter/regulator assembly within 1m (3ft) horizontally of the vertical centreline of the regulator
• A oil tank or an oil tankfill inlet
A
venting system shall not terminate within .3m (1ft) of the following:
• Above grade level or any surface that may support snow, ice, or debris
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