Ventry 20EM3550 User manual

OWNER’S MANUAL
POSITIVE PRESSURE VENTILATION FANS
By Ventry Solutions, Inc.
[phone]
Ventry.com

FOR POSITIVE PRESSURE ATTACK AND VENTILATION
BY
Ventry Solutions, Inc.
14128 N. Hauser Lake Road
Hauser, ID 83854 USA
[phone] • [phone]
Fax: [phone]
Ventry.com
Thank you for purchasing a VENTRY® POSITIVE PRESSURE VENTILATION FAN made by
Ventry Solutions, Inc. Our experience as volunteer fire fighters, coupled with feedback from fire
fighters across the country, has helped make this fan the best on the market. If you have any
comments, ideas, observations or creative uses, please contact us by phone, email, mail or fax so
that we may continue to improve our product.
Fan Serial Number: _________________________________________
Fan Size/Model: ___________________________________________
Engine Serial Number: ______________________________________
Invoice Number: ___________________________________________
Invoice Date: ______________________________________________
Patent 5,503,526
Copyright 2017 Ventry Solutions, Inc., Sixth Edition
Printed August 15, 2017

ii
TABLE OF CONTENTS
FAN SPECIFICATIONS ...................................................................................................................1
OUT OF THE BOX ...........................................................................................................................3
FAN TRANSPORT ...........................................................................................................................3
One Person Carry ..........................................................................................................................3
Two Person Carry ..........................................................................................................................3
LEG ADJUSTMENT.........................................................................................................................4
How to raise the fan with one person ............................................................................................4
Another method of raising the fan, one person .............................................................................6
How to lower the fan, one person ..................................................................................................6
HOW TO USE POSITIVE PRESSURE VENTILATION ................................................................7
PPV The Basics .............................................................................................................................7
Placement ......................................................................................................................................8
Smoke Ejection ..............................................................................................................................8
FAN SAFETY ...................................................................................................................................8
Safety Guidelines ..........................................................................................................................8
Ground Debris Pickup / Maximum Air Volume ...........................................................................9
Stability .........................................................................................................................................9
Filling the Gas Tank ......................................................................................................................9
Backdraft Situations ......................................................................................................................9
COMMON QUESTIONS ABOUT POSITIVE PRESSURE ...........................................................10
Why positive instead of negative pressure ventilation? .............................................................. 10
When should positive pressure not be used? ............................................................................... 10
What is the door seal and how important is it? ........................................................................... 10
What are some examples of positive pressure ventilation? ......................................................... 10
FAN COMPARISON METHODS ................................................................................................... 11
Ribbon Test ................................................................................................................................. 11
Volume Test ................................................................................................................................ 11
Thrust Test ................................................................................................................................... 11
WARRANTY .................................................................................................................................... 12
Propeller / Frame / Guard ............................................................................................................ 12
Engine .......................................................................................................................................... 12

iii
MAINTENANCE .............................................................................................................................. 12
Engine Maintenance .................................................................................................................... 12
Kevlar & Fiberglass-Coated Propeller ........................................................................................ 12
Frame Maintenance ..................................................................................................................... 12
Tachometer .................................................................................................................................. 12
TROUBLE SHOOTING ................................................................................................................... 12
Fan walks during operation ......................................................................................................... 12
Leg movement obstructed ........................................................................................................... 13
Fan too large to fit compartment ................................................................................................. 13
PARTS ORDERS .............................................................................................................................. 13
PARTS LIST FOR 20-INCH FRAME, WITH AND WITHOUT WHEEL OPTION ..................... 14
20-Inch Frame Assembly Diagram ............................................................................................. 15
PARTS LIST 24-INCH FRAME, WITH AND WITHOUT WHEEL OPTION .............................. 16
24-Inch Frame Assembly Diagram ............................................................................................. 17
PARTS LIST FOR ENGINE, TACH, AND SPARK ....................................................................... 18
Spark Arrester and Stickers, Honda GX Series Engines ............................................................. 18
Spark Arrester and Stickers, Honda GC Series Engines ............................................................. 18
Tachometer/Hour Meter .............................................................................................................. 19
PARTS LIST FOR GUARD MOUNT ............................................................................................. 20
Guard Mount Pictures ................................................................................................................. 21
PROPELLER ORIENTATION ........................................................................................................ 22
PARTS LIST FOR PROPELLER MOUNT ..................................................................................... 22
Propeller Hubs and Tab Washer Pictures .................................................................................... 23
PARTS LIST FOR FRONT OF GUARD ......................................................................................... 24
Guard Front Picture ..................................................................................................................... 24
PARTS LIST FOR LIGHT OPTION ................................................................................................ 25
Light Options Pictures ................................................................................................................. 25
TORQUE VALUES .......................................................................................................................... 26

iv
If your VENTRY® FAN is damaged in any way,
immediately take it out of service and give us a call so
we can help get it fixed and back in service quickly.
[phone] • Ventry.com
Some of the pictures within this VENTRY FAN manual show older
VENTRY FANS, before the vertical handles and Solid Rubber / Medium
Flat-Free Wheels with Stair Skids.
Should you have questions or need parts for you VENTRY FAN, no
matter the age, please contact us.

*HP (HORSEPOWER): specs show correct HP ratingsVFENTRY AN
but many other PPV fan manufacturers continue to publish pre-2007
values. Long ago, litigation changed the way Honda and other small
engine manufacturers rated HP. When comparing fans, if the fans’
engines are equal in make and model, the engines are equal in
power, even if the HP ratings shown do not match.
Air volume is a much better indicator of fan performance(output)
than engine horsepower . However, because air volume is(input)
measured inconsistently in the industry, comparing published CFM
values is largely meaningless and in many cases misleading. We
encourage hands-on and side-
by-side testing and can arrange
no-risk free trials to facilitate
this. Hands-on demos make
other big differences in fans
obvious, like relative weight,
noise, emissions, and versatility.
Pg 1 of 2
THRUST: Based on Newton’s third law of motion, thrust is a
measure of fan performance that allows easy comparison
of fans, with far fewer variables than direct measure of CFM.
Simple instructions available upon request.
VOLUME: Air volume, in cubic feet per minute (CFM), is
measured on with the legs extended. MultiplyVF
ENTRY ANS
by 1.69875 to convert this to meters cubed per hour (m /h).
3
CARBON MONOXIDE: All models’ CO output atVFENTRY AN
equilibrium are well below OSHA standards of 50 PPM.
HONDA GC- VERSUS GX-SERIES ENGINES. The GC160
motor is an economy option, rated as residential duty, while
the heavier duty Honda GX series motors (GX120, GX160,
GX200) are rated commercial duty. GX motors also have
cast iron bores instead of aluminum, low-oil shut off
protection, an on/off switch separate from the throttle, and
a fuel shut-off valve. Warranties also differ (see Table 1).
Ventry Solutions, Inc.
[phone] | 208-773-1194
Fax [phone] | [e-mail]
14128 N Hauser Lake Rd, Hauser, ID 83854
VENTRY COM.
VENTRY SOLUTIONS, INC. • [phone] • ventry.com 20170322 Fan Specs
SPECIFICATIONS
ALL-TERRAIN
PPV FANS ®
MOTOR MAKE HP RATINGS
& MODEL Pre-2007 Now
Honda GX120 4 hp 3.5 hpà
Honda GC160 5 hp 4.6 hpà
Honda GX160 5.5 hp 4.8 hpà
Honda GX200 6.5 hp 5.5 hpà
Table 2
Table 1
¸Measurement not yet available.
Patent 5,503,526
WARRANTY. VFENTRY ANS
come with lifetime factory
support. Also, workmanship
and materials are covered on
all for five years.VF
ENTRY ANS
Our customers have deemed
this our “No BS” warranty.
No matter your fan’s age or
origin, if you ever have
questions, please contact us
and we will help!
FEATURES OF ALL VENTRY FANS®
VOLUME THRUST CO FUEL RUN TIME ENGINE/MOTOR WARRANTY
MODEL TYPE PROP MOTOR/ENG. HP* (CFM) (LBS) (PPM) CAPACITY /TANK Commercial/Institutional Use
20EM3550 Electric 20 Baldor EM3550 1.5 10,500 8. 0 N/A N/A Motor 18 mos; Drive 18 mos1
®
20GX120 ® Gas 20 Honda GX120 3.5 16,500 12.7 17 2.1 qts 1.8 hrs Engine: 3 years
20GC160 ¸Gas 20 Honda GC160 4.6 17,000 13.5 1.9 qts 1.5 hrs Engine: 3 months
20GX160 ¸Gas 20 Honda GX160 4.8 17,300 14.4 3.3 qts 2.0 hrs Engine: 3 years
24GX120 Gas 24 Honda GX120 3.5 20,000 17.6 16 2.1 qts 1.8 hrs Engine: 3 years
24GC160 Gas 24 Honda GC160 4.6 23,800 19.7 30 1.9 qts 1.5 hrs Engine: 3 months
24GX160 Gas 24 Honda GX160 4.8 24,000 19.8 32 3.3 qts 2.0 hrs Engine: 3 years
24GX200 Gas 24 Honda GX200 5.5 29,500 24.4 19 3.3 qts 1.7 hrs Engine: 3 years

Figure 3. Three
wheel choices.
20170322 Fan Specs
Small
Solid Rubber Medium
Flat-Free
Large
Pneumatic
ELECTRIC FAN MODEL 20EM3550
Table 5
Table 4
Motor: 1.5 hp / 1.1 kW
Wattage: 1800 watts
Input: Single phase, 100-115V, 50-60 Hz
Output to Motor: Three phase (lowers weight)
Amps: 15 Amp or less, even at start-up (no initial spike)
Controller: Variable speed from 0 to 3000 RPM
Listed: All electrical components are UL and CSA listed
NEMA 15A Plugs: Locking plug L5-15 (recommended) or
straight/non-locking 5-15 (by request). Advise upon order.
GFCI-compatible. Please note that older GFCI breakers may have
sensitivity conflicts with modern GFCI-compatible equipment.
H
W
D
Figure 1
VENTRY SOLUTIONS, INC. • [phone] • ventry.comPg 2 of 2
VFENTRY AN Specifications Continued
EVFLECTRIC ENTRY ANS, model 20EM3550, shown with legs retracted,
legs partially extended, and legs fully extended.
All three fans shown have optional
Small Solid Rubber
Wheels and Skids.
DIMENSIONS. Actual
measurements may vary ±1/2
inch in manufacturing. These
measurements were taken with the
fans’ legs retracted for storage, as
shown in Figure 1.
WEIGHT. Weights are of the base
model fan before adding any
accessories. “Dry” is without fuel
or oil; “Wet” is with fuel and oil.
ACCESSORIES AND SPECS. Availability varies by model as
shown in Table 6.
lEach new includes one Ultimate Door Stop.VFENTRY AN
lPoint of Entry Safety Lights, either halogen or LED, add
slightly more than 1 pound to fan weight. Lights fold
down when not in use so do not affect dimensions.
lSmall Solid Rubber Wheels include Stair Skids and a
vertical handle. Adds 6 lbs.
lMedium Flat-Free Wheels include Stair Skids and a
vertical handle. Adds 2.5 lbs to 24GX200 fans and 8.5 to
9.5 lbs. to other models.
lLarge Pneumatic Wheels include
a vertical handle. Adds 6 lbs.
~ Not available
lOptional
þlncluded
20EM3550 ~~~~~ ll lþ
20GX120 ~~~ ll lllþ
20GC160 ll lll
~~~ þ
20GX160 ~ ll lllllþ
24GX120 ~~ lll lllþ
24GC160 lll lll
~~ þ
24GX160 llllllllþ
24GX200 þþlllllll
Entry Point Halogen Light Tachometer Misting Ring
Ultimate Door
Stop
Small Solid Rubber
MODEL
Wheels
Medium Flat-Free
Large Pneumatics
ACCESSORIES BY MODEL
Table 6
Spark Arrester Entry Point LED Light
MODEL DRY WET
20EM3550 78 ~
20GX120 60 64
20GC160 57 61
20GX160 66 72
24GX120 78 82
24GC160 64 68
24GX160 73 79
24GX200 88 94
WEIGHT (Lbs)
Fan with Fan with wheels, Fan with wheels, Fan with tires,
no wheels Small Solid Rubber Medium Flat-Free Large PneumaticMODEL
20EM3550 23.25 x 23.25 x 20.25 23.25 x 23.25 x 21 23.25 x 27.5 x 22.5 ~
20GX120 23.25 x 23.25 x 20.25 23.25 x 23.25 x 21 23.25 x 27.5 x 22.5 ~
20GC160 23.25 x 23.25 x 20.25 23.25 x 23.25 x 21 23.25 x 27.5 x 22.5 ~
20GX160 23.25 x 23.25 x 20.25 23.25 x 23.25 x 21 23.25 x 27.5 x 22.5 ~
24GX120 28 x 27 x 21.75 28 x 27 x 22.75 28 x 27 x 24 28 x 30 x 25.75
24GC160 28 x 27 x 21.75 28 x 27 x 22.75 28 x 27 x 24 28 x 30 x 25.75
24GX160 28 x 27 x 21.75 28 x 27 x 22.75 28 x 27 x 24 28 x 30 x 25.75
24GX200 ~ 28 x 27 x 22.75 28 x 27 x 24 28 x 30 x 25.75
DIMENSIONS (H x W x D, Inches)
Table 3

P OSITIVE P RESSURE V ENTILATION F ANS
3
OUT OF THE BOX
After unpacking your fan, there are a couple of things you will need to do.
First: attach wheel option (if added) per included instructions.
Second: add fuel and oil. Oil amounts and specifications are listed in the engine manual under
servicing. All models use 0.63 quart of 10W-30 oil.
FAN TRANSPORT
One Person Carry
(Figure 4) Face the propeller, grip side handles with both hands and lift, pressing guard against
body.
Two Person Carry
(Figure 5) Left and right persons grasp corresponding side handles.
Figure 4. One Person Carry
Figure 5. Two Person Carry

V ENTRY S OLUTIONS , I NC .
4
LEG ADJUSTMENT
Please note that these are just suggested ways of raising and lowering the fan. Each
firefighter finds a way to set the fan up that works best for them.
How to raise the fan with one person
Step 1: Loosen all three leg adjustment knobs.
Step 2: Rock the fan on two legs, one front and one rear allowing the other front leg to extend.
Step 3: Tighten the leg lock handle on the extended leg.
Step 4: Rock fan onto rear and extended front leg allowing the other front leg to extend.
Figure 6. Step 1 Figure 7. Step 2
Figure 8. Step 3
Figure 9. Step 4.

P OSITIVE P RESSURE V ENTILATION F ANS
5
Step 5: Tighten the leg lock handle on the extended front leg.
Step 6: Rock the fan on the two extended legs while adjusting the remaining leg.
Step 7. Aim and tighten rear leg
Step 8. Start fan and check stability.
Figure 10. Step 5 Figure 11. Step 6
Figure 12. Step 7
Figure 13. Step 8