Mars WMH Unheated Series User manual

WMH Submittal Package
14716 S. BROADWAY, GARDENA, CA 90248 ● Ph: [phone] Fax: [phone] ● www.marsair.com
© Copyright Mars Air Systems, LLC 2014
NOTE: MARS AIR SYSTEMS, LLC reserves the right to change specifications and product design without notice. Such revisions do not entitle the buyer to corresponding changes, improvements, additions, or replacements
for previously purchased equipment.
MARS AIR SYSTEMS, LLC ● GARDENA, CA ● USA
WMH Unheated Series
Wind Stopping 16
Industrial Air Curtain
Submittal Package
Submitted by:
Mars Air Systems, LLC
14716 S. Broadway
Gardena, CA 90248
P.O.#
S.Q.
Company
Print Name
Signature
Date
Company Seal or Stamp
(Electronic Signature Preferred)

WMH Submittal Package
14716 S. BROADWAY, GARDENA, CA 90248 ● Ph: [phone] Fax: [phone] ● www.marsair.com
© Copyright Mars Air Systems, LLC 2014
NOTE: MARS AIR SYSTEMS, LLC reserves the right to change specifications and product design without notice. Such revisions do not entitle the buyer to corresponding changes, improvements, additions, or replacements
for previously purchased equipment.
MARS AIR SYSTEMS, LLC ● GARDENA, CA ● USA
Table of Contents
Page # Content
3-4 WMH Unheated Submittals
5 Typical Motor Control Panel Wiring Diagram
6-7 Accessory Installation Supplement
8-11 Installation, Operation and Maintenance
12-13 Troubleshooting Guide
14 Warranty
15-23 CSI Spec
24 Reference Links

WMH (Wind Stopping 16) Series
Unheated
Model Lengths 96” – 192”
14716 S. BROADWAY, GARDENA, CA 90248 ● Ph: [phone] Fax: [phone] ● www.marsair.com
© Copyright Mars Air Systems, LLC 2014
NOTE: MARS AIR SYSTEMS, LLC reserves the right to change specifications and product design without notice. Such revisions do not entitle the buyer to corresponding changes, improvements, additions, or replacements
for previously purchased equipment.
MARS AIR SYSTEMS, LLC ● GARDENA, CA ● USA VM, 09/28/20
Model
Distance from
nozzle (in)
Avg. Core
Velocity (FPM)
40" 2233
80" 1427
120" 1227
160" 993
200" 867
Projection Velocity
WMH60-1U*-TS
WMH
Series: Wind Stopping 16
144 2 UHTS
LENGTH OF UNIT
# OF MOTORS
U = UNHEATED
VOLTAGE CODE
COLOR
EXAMPLE
208/230v/3Ø
(E/F)
460v/3Ø
(H) 575v/3Ø
(I)
WMH96-2U*-TS 38/31.6 15.8 12.6
WMH120-2U*-TS 38/31.6 15.8 12.6
WMH144-2U*-TS --/42.0 21.0 16.8
WMH168-3U*-TS 57/47.4 23.7 18.9
WMH192-4U*-TS 76/63.2 31.6 25.2
Alternate voltagecodes with FLA(Full Load Amp) data:
380-415v/3Ø/50Hz (W) - 6.6Aper motor (5HP), 8.9A per motor (7HP)
Fortotal FLA,multiplymotorFLAby# of motors.
Ampacity (MCA) = total FLA X 1.25
Electrical Data
(FLA)
Unit Voltage
(Voltage Code)
* - Use corresponding letters in"Electrical Data" columns to complete the model
numbers
MARS Air Systems, LLC certifies that the Air Curtains shown on this data
sheet are licensed to bear the AMCA seal. The ratings shown are based on
tests and procedures performed in accordance with AMCA Publication 211
and comply with the requirements of the AMCA Certified Ratings Program.
The AMCA Certified Ratings Seal applies to airflow rate, average outlet
velocity, outlet velocity uniformity, velocity projection and power rating at
free delivery only.
NOTE: Models HV260-1, HV2108-2 & HV2120-2 are not AMCA Certified.
Unheated Data Sheet
Applications: Environmental Separation: Max Height 20’ /Insect Control: Max Height 18’
Features:
5 & 7 HP continuous duty industrial motors
Direct drive unit for heavy duty industrial projects
AMCA Certified units (see table above for models available)
CSA Certified to conform to UL 507 (US) and CSA 22.2 (Canada) Standards
(Indoor/Outdoor Use)
Top and wall mounting holes provided (5/8”)
Cabinet has sufficient strength for fastening to wall on both ends without intermediate
support.
Adjustable air directional vanes with 40° sweep front to back
Standard color is Titanium Silver
Rust preventative electrostatic polyurethane powder coating
12-month parts warranty
Freight Not Included (FOB Factory)
Proudly Made in the USA
Mars Recommended Accessories (See Submittals for additional details):
Door Limit Switches
o99-125, Industrial surface mounted magnetic switch (controller required)
Controllers
oMCP⁺-†U*, Motor Control Panel, 120V control voltage (⁺= HP Code [E for 5 HP, F for 7 HP], † = # of Motors, * = Voltage Code)
oMCP-TD, Adjustable time delay, 1sec-100hr (panel required)
oMCP-24V, Low voltage control option (panel required)
oBMS-303, BMS for monitor and control (panel required with MCP-24V)
Note: Dry contact provided in panel for monitoring motor. 24Vac signal provided from panel for
controlling motor
Sound Levels: (measured at 10’ in an open field)
2 Motor Unit = 69 dBA, 3 Motor Unit = 70 dBA & 4 Motor Unit = 72 dBA
WMH (Wind Stopping 16)
Model Number
Nozzle
Length
(in)
Length
(in)
Depth
(in)
Height
(in)
Motor
(hp)
Weight
(lbs)
Max Velocity
(fpm)
MaxVolume
(cfm)
Avg Velocity
(fpm)
Volume
(cfm) Uniformity (%)
Power Rating
(watts)
WMH96-2U*-TS 96 99 22 22 Two 5 635 7300 21900 3732 10824 91 9390
WMH120-2U*-TS 120 123 22 22 Two 5 735 7600 28500 4057 15014 87 12420
WMH144-2U*-TS 144 147 22 22 Two 7 890 7400 33300 3816 17022 82 13300
WMH168-3U*-TS 168 171 22 22 Three 5 1060 6700 35175 3822 19845 90 17700
WMH192-4U*-TS 192 195 22 22 Four 5 1275 7300 43800 3722 21648 91 18760
* - Use corresponding letters in "Electrical Data" columns to complete the model numbers. Note: Data above is for 60 Hz, 17%reduction in the performance data with 50 Hz.
Mechanical Data
Lab Data
AMCA Certified Lab Data
1. The AMCA Certified Ratings Seal applies to airflow rate, average outlet velocity, outlet velocity uniformity, velocity projection and power rating at free delivery only.
2. Rated data shown are only for base (unheated) units, as shown.

Document No: ACC-IOM
Date: 04/13/2013
ACCESSORY INSTALLATION SUPPLEMENT
Door Limit and Magnetic Reed Switches
1. Mars door limit and magnetic reed switches are
available with NEMA 1, 4X and 7 ratings. Contact the
factory for additional ratings and details. (See FIG. 1
for typical single swing, hinged door type, door limit
switch installation)
FIG. 1
2. Use light gauge materials when field fabricating
brackets to activate and deactivate the door limit
switch(s). (FIG. 2) Figure 2 also shows the typical
installation of the combination plunger/roller type
NEMA 1 door limit switch, for all non-hinged style
doors.
FIG. 2
3. All wiring must be per local and NEC (National Electric
Code) codes.
4. Panels or controllers may be required. Refer to wiring
diagram inside the control panel box.
FIG. 3
FIG. 4

Document No: ACC-IOM
Date: 04/13/2013
Bracket Installation
1. Side Extension Plates: For doorways wider than the air
curtain, use combination of Side Extension Plates and
Adjustable Mounting Brackets. (FIG. 5)
FIG. 5 (LPV SHOWN)
2. Adjustable Mounting Brackets: For installation of air
curtain over drum-style roll-up door, use Extended
Wall Mounting Brackets. (FIG. 6)
FIG. 6 (STD SHOWN)
3. Extended Wall Mounting: For Tandem Mounting of air
curtain over sectional style door, use either wall
mounting angle brackets or threaded rods.
4. Top Mounting Brackets: For overhead installation of
units, use in conjunction with the threaded holes
provided on top of unit.
Note: Angle brackets, threaded rods and I Beams are
provided by others. (FIGS. 7 & 8) All optional brackets
are not available for WMI/WMH and BD Series.
FIG. 7 (WMI/WMH Shown)
FIG. 8 (BD Shown)
14716 S. Broadway St., Gardena, CA 90248
(310) 532–1555 ● [phone]
Fax: [phone]
www.marsair.com

Document No: W-IOM
Date: 08/25/20
WIND STOPPING 14 (WMI) AND WIND STOPPING 16 (WMH)
INDUSTRIAL SERIES
Installation, Operation and Maintenance Manual
Please read and save these instructions. Read carefully before attempting to assemble, install, operate, or maintain
the product described. Protect yourself and others by observing all safety information. Failure to comply with these
instructions could result in personal injury and/or property damage. Retain these instructions for future reference.
OVERVIEW
Mars Air Curtains are
designed to cover door
openings, providing
both temperature
control/environmental
separation and flying
insect control, when
the building’s doors are
opened. Typical
installation heights are:
WMI Series
(Environmental
Separation up to 16’
and Flying Insect Control 14’) and WMH Series
(Environmental Separation up to 20’ and Flying Insect
Control 18’) The units are typically overhead mounted
horizontally above the door opening. They can also be
vertically mounted alongside the opening. The units are
CSA Listed, Canada and US, for either an inside or
outside mount and AMCA Certified. Heated units must
be mounted on the inside or the protected side of the
opening. The motors used in the WMI are 1, 2 and 3 HP
and the WMH utilize the 5 and 7 HP motors.
The WMI/WMH Series come standard with an
expanded metal air intake grille(s). The WMI/WMH
Series can be configured with Flat Bank or V-Bank Filter
Sections, as options.
GENERAL SAFETY
INFORMATION
Use this product only in
the manner intended by
the manufacturer. If you
have any questions,
contact the
manufacturer. Only
qualified personnel
should install this
product. Installing
personnel should have a
clear understanding of
these instructions and
should be aware of general safety precautions.
Improper installation can result in electric shock,
possible injury due to coming in contact with moving
parts, as well as other potential hazards.
WARNING
When servicing the product, motor may be hot enough
to cause pain or injury. Allow motor to cool before
servicing.
WARNING
To reduce the risk of fire, electric shock, or injury to
persons, observe the following.
A. Always disconnect, lock and tag power source before
installing or servicing product.
B. Installation work or electrical wiring must be done by
qualified person(s) in accordance with all applicable
codes and standards, including fire-rated construction.
C. The combustion airflow needed for safe operation of
fuel burning equipment in the area may be affected by
the product’s operation. Follow the heating equipment
manufacturer’s guideline and safety standards, such
as those published by the National Fire Protection
Agency (NFPA), the American Society of Heating,
Refrigeration and Air Conditioning Engineers
(ASHRAE) and local code authorities.
D.When cutting or drilling into a wall or ceiling, be careful
not to damage electrical wiring and other hidden
utilities.

RECEIVING AND INSPECTION
Upon receiving the product, check to make sure all
items are accounted for by referencing the Bill of Lading
to ensure all items were received. Inspect each carton
for shipping damage before accepting delivery. Notify
the freight carrier if any damage is noticed. The carrier
will make notification on the delivery receipt
acknowledging any damage to the product. All damage
should be noted on all copies of the Bill of Lading which
is countersigned by the delivering carrier. A Carrier
Inspection Report should be filled out by the carrier
upon arrival and a report given to the Traffic
Department. If damaged upon arrival, file a claim
immediately with the carrier. Any physical damage to
the unit after acceptance is not the responsibility of
Mars Air Systems.
UNPACKING
Verify that all parts, components and accessories, and
the correct quantities of each have been received. If any
items are missing, report shortages to Mars Air
Systems directly to arrange for obtaining the missing
items. Again, verify quantities received against those on
the Bill of Lading only, as multiple shipments may be
involved.
INSTALLATION
Typical Mounting – Wall or Ceiling Mounted
Horizontally Above the Door Opening
1. Overhead installation is recommended to prevent
the possibility of the unit falling if the wall to which
the unit is mounted is hit by a truck or material
handling device. If however, wall or bracket
mounting is preferred, additional holes may be
drilled in the side panels of the housing.
Note: Bracket/Support mounting is not generally
recommended for Air Curtains equipped with steam
or hot water coils. Overhead installation using
threaded rods with independent suspension of coils
is recommended.
2. Center the unit over the opening. The air curtain
shall be equal to or greater than the width of the
opening.
3. Four pre-punched 1/2” mounting holes on the top of
the unit are provided for your convenience. These
holes must be utilized to secure the product
overhead. All hardware is field provided by others.
4. Mount the product such that the discharge is 1”
above the opening and all obstacles. (FIG. 1)
Note: If the product is installed higher than the
recommended 1” above the opening, then it must be
moved 3/8” away from the wall for every 1” that it is
moved up. Any void between the wall and the product
must be sealed, by others, to optimize performance.
FIG. 1
5. Use four (4) threaded rods for overhead installation
or four (4) threaded bolts for wall installation. All
hardware is field provided by others. (FIG. 1)
6. If applicable, for tandem installation or products
mounted side by side, allow no more than 6”
between the two products. For overhead installation
using threaded rods, the products may require a
beam, by others, to span the full distance of the
mounting length. (Reference Accessory
Installation Supplement)
7. All wires must be connected to the external junction
box(s) of the unit.
8. The unit must be wired per NEC and local codes.
Electrical Field Wiring
The unit and any optional accessories must be wired
with the proper voltage to the junction box per the wiring
diagram. (FIG. 2, unheated products only)
WARNING
Precaution should be taken in explosive atmospheres.

FIG. 2
START-UP
This product has been assembled and tested at the
factory prior to shipping. The following procedures
should be performed to assure its performance. Before
continuing with the start-up, it is important to recognize
the safety controls furnished with the unit.
NOTE
For accessory installation, reference Accessory
Installation Supplement.
For heated products, reference Heated Products
Supplement.
D. Check all field wired components “if supplied” are
wired correctly.
E. Check that the inlet air supply and the discharge air
supply are free of obstructions.
F. Check that all air filter(s) and/or air intake grille(s) are
in place and installed properly, as originally shipped.
G. Verify voltage to the product once more and turn
power on.
H. Regardless of whether the product is mounted on the
inside or outside of the door opening, set the air
directional vanes in the discharge nozzle slightly
outward to approximately 10-15° towards the
outside, or the wind load. (FIG. 3).
I. For products with control panels, turn the HOA
(Hand-On-Auto) selector switch to “On” position and
open the door to energize the product. For products
without a control panel or an On/Off switch, open the
door to energize the product.
J. If heated products are installed, reference Heated
Products Supplement.
K. For three phase units, verify direction of rotation of
blower wheels (note direction arrows on the blower
wheel housing). Correct if needed by changing
polarity of three phase power.
L. VERY IMPORTANT Using a clamp meter, measure
the amperage to each motor and ensure that they do
not exceed the amperage listed on the product label.
M. If applicable, adjust the air intake grille(s) such that
the output air stream reaches the floor. For
temperature control and environmental separation
applications, the air stream should reach the floor
with sufficient strength to create an air seal around
the door opening without creating turbulent mixing of
the inside and outside air. For flying insect control
applications, the air stream should reach the floor
with maximum strength. If after proper installation
and adjustment, the product appears to be producing
too little or too much air for the application, contact
the manufacturer.
WARNING
Prevent hazard of electrical shock. More than one
disconnect switch may be required to de-energize this
product.
WARNING
The following items must all be completed by a
qualified installer and checked off when completed
A. Re-check that the product has been installed
properly and is level and secure.
B. Check all terminal screws are tight and field wiring
is connected in accordance to National Electrical
Code and wired per the enclosed wiring diagram.
For electric heated models, ensure that the coils
are secured and not touching each other on any
metal surface.
C. Verify proper voltage prior to powering the
product. (See product label for reference).
FIG. 3

MAINTENANCE
Routine maintenance is required to keep this product
operating at its peak performance and efficiency. Over
time, the housing, air intake grille, air intake filter,
blower wheels and motor(s) will accumulate a buildup
of dust, debris and other residue. It is imperative to keep
these components clean. Failure to do so will not only
lower operational efficiency and performance, but also
reduce the useful life of the product. The time between
cleanings depends on the application, location, and
daily hours of use. On average, under normal use
conditions, the product should require a thorough
cleaning once every six (6) months.
To clean the product, perform the following:
1. Verify the product has been disconnected from the
power source.
2. Use a damp cloth and either a warm mild soapy water
solution or bio-degradable degreaser,to wipe down the
exterior components of the housing.
3. To access the interior of the product, remove the air
intake grille(s) and/or air intake filter(s). This is
accomplished by removing the screws on the face of
the air intake grille(s)/filter(s).
4. Thoroughly clean the air intake grille(s)/filter(s).
5. Thoroughly wipe down the motor, blower wheels and
blower wheel housings. Be careful not to spray the
motor with a water hose.
6. The motor(s) require no additional lubrication.They are
permanently lubricated and feature double sealed ball
bearings.
7. To re-install the product, reverse the procedures
above.
8. Reconnect the power source to the product.
9. If you have any questions regarding the maintenance
of the product, contact the manufacturer.
SPECIAL APPLICATIONS
Outdoor Installation
For outdoor unit special consideration may be required
for enclosure, motor, wheel and other components to
minimize damage caused by exposure to the outdoor
elements. Contact factory for special construction and
costing.
Freezer and Cooler Installation
Air curtain must be mounted on the warm side for optimal
performance. Adjustable perforated dampers are
strongly recommended to control the air curtain air flow
velocity at the floor level.
High humid areas may require de-humidifier or
additional defrost cycle to minimize condensation and
freezing for freezer applications. We recommend the air
curtain unit to not replace doors but work in conjunction
with door opening sequence cycle. Contact factory for
details.
DISCLAIMER
Mars reserves the right to change specifications and
product design without notice. Such revisions do not
entitle the buyer to corresponding changes,
improvements, additions, or replacements for previously
purchased equipment.
WARNING
To reduce the risk of fire, electrical shock, or injury to
persons, observe the following:
A. Maintenance is to be performed only by qualified
personnel who are familiar with local codes and
regulations and are experienced with this type of
product.
B. Before servicing or cleaning the product switch
power off at service panel and lock service panel to
prevent power from being switched “ON”
accidentally.

PROBLEM
CAUSE
SOLUTION
NO AIR BLOWING
OUT OF DISCHARGE
NOZZLE
- No power being supplied to the unit
from the electrical power source - Confirm power source / check if in on position
- Circuit breaker is tripped
- Reset circuit breaker
- Blown fuses on power supply
- Replace fuses
- Motor overload is open or tripped
- Allow the motor to cool down; motor has auto reset
internal overload; if unit is panel equipped, press
reset button on overload inside panel, or replace
motor overload if overload remains tripped
- Motor contactor / relay defective
(if applicable)
- Check voltage to coil; check contacts to see if they
are pulling in
- Failed switch
- Replace or repair limit switch
MOTOR IS RUNNING
BUT FANS ARE NOT
SPINNING
- Loose or broken coupling (belt drive) - Replace or tighten coupling
- Loose set screws on wheel hubs
- Tighten set screws on motor shaft flats
- Fan spinning inside fan housing
- Tighten fan on shaft or replace fan
- Broken fan hub
- Replace fan wheels
ELECTRICAL
CONTROLS NOT
WORKING WHEN
DOOR IS OPEN
- Switch is in off position - Turn unit's switch to the on position
- Door limit switch is not operating
- Repair or replace door limit switch
UNIT WILL NOT TURN
OFF - Door limit switch is permanently closed or energized
- Position the door switch in a manner that turns off the
unit when the door closes and turns on the unit when
the door opens. Only light pressure required.
LOW AIR FLOW
- Discharge air vanes out of
adjustment
- Adjust vanes to proper position
(Refer to Start-Up Section in this manual)
- Obstruction on intake or discharge
- Remove obstruction or move air curtain
-
Power leads out of polarity
- Switch power leads to correct polarity
(3 phase models only)
- Blower motor rotating below normal
speed
- Apply proper voltage per unit requirement
(see unit label) / Adjust adjustable motor speed knob
(if applicable)
- Fan rubbing against housing
- Free fan from housing
- Blower wheels clogged with dirt
- Clean and remove dirt from blower wheels
EXCESSIVE AIR
VELOCITY AT DOOR
OPENING
- Nozzle out of adjustment and not
angled far out enough (BD only) - Adjust nozzle angle to outside
- Air temperature too cold
- Add auxiliary heat to overcome wind chill
- Air stream pushing air outside of the
building
- Adjust discharge angle back into building
AIR NOT HITTING
THE FLOOR
- Low air velocity
- Adjust vanes to proper position or check installation
height (Refer to Start-Up Section in this manual)
- Obstruction in the direction of air flow
- Remove obstruction or move air curtain
(Move out 3/8" for every 1" up from the door)
- Negative building pressure
- Provide a make-up air system to relieve negative
building pressure
UNEVEN AIR
- Shaft rotating inside fan
- Replace fan or tighten fan on shaft
- One motor not functioning
- Replace or repair motor
EXCESSIVE NOISE
AND OR VIBRATION
- Loose or broken coupling (belt drive) - Replace or tighten coupling
- Loose set screws on wheel hubs
- Tighten set screws on motor shaft flats
- Fan spinning inside fan housing
- Tighten fan on shaft or replace fan
- Broken fan hub
- Replace fan wheels
- Bearing end caps worn
- Replace Bearing end caps
- Damaged blower wheel
- Replace Blower Wheel
- Bearing end caps worn
- Replace Bearing end caps
- Balancing clips missing
- Replace Blower Wheel
TROUBLESHOOTING

TROUBLESHOOTING MOTOR
To determine if the motor is in good operating condition, compare measured motor resistance at the motor
terminals to the values shown below.
HIGH SPEED (1750) MEDIUM SPEED (1650) LOW SPEED (1450)
Applicable
Air Curtain
Series
Mars Part # Manufacturer Part # Brand Motor Rating HP Voltage Phase
Black Motor Wire & White
Motor Wire
- -
03-001 7190-1682 Fasco Nema 1 1/6 115 111.5 - -
03-002 7190-1903 Fasco Nema 1 1/6 115 18.4 - -
03-003 7190-1825 Fasco Nema 1 1/6 230 164 - -
03-004 7190-1904 Fasco Nema 1 1/6 230 144.6 - -
Applicable
Air Curtain
Series
Mars Part # Manufacturer Part # Brand Motor Rating HP Voltage Phase
White Motor Wire (T1)
&
Black Motor Wire (T3)
White Motor Wire (T1)
&
Black Motor Wire (T5)
White Motor Wire (T1)
&
Black Motor Wire (T2)
03-010 34G928X169 Baldor Washdown (IP54) 1/2 115 11.2 - -
03-010 34G928X169 Baldor Washdown (IP54) 1/2 208/230 14.6 - -
03-005 7124-1175 Genteq Nema 1 1/2 115 12.6 3.8 5.2
03-006 7124-1560 Genteq Nema 1 1/2 208/230 19.9 15.9 22.5
03-007 48S17T439 Marathon Nema 1 1/2 277 17.7 - -
03-005 K055PWM1736C13H Nidec Nema 1 1/2 115 12.1 3.7 5.2
03-005 K055PWM1736C13H US Nema 1 1/2 115 15.3 3.7 5.4
03-006 US Nema 1 1/2 208/230 18.7 18.2 24.2
Applicable
Air Curtain
Series
Mars Part # Manufacturer Part # Brand Motor Rating HP Voltage Phase
White Motor Wire (T1)
&
Black Motor Wire (T2)
White Motor Wire (T1)
&
Black Motor Wire (T3)
-
03-021 35T276R025G1 Baldor Washdown (IP54) 1115 10.7 - -
03-015-Baldor 35M316S174 Baldor Nema 1 1115 10.6 - -
03-015-Baldor 35M316S174 Baldor Nema 1 1208/230 12.2 - -
03-021 35T276R025G1 Baldor Washdown (IP54) 1208/230 12.8 - -
03-014 7124-0985 Genteq Nema 1 1115 11.6 2.4 -
03-015 7124-1096 Genteq Nema 1 1208/230 16.5 9.2 -
03-015 -Nidec Nema 1 1208/230 14.3 6.5 -
03-014 K55BWJZB-2362 US Nema 1 1115 1 1 2.1 -
03-015 -US Nema 1 1208/230 13.2 6.3 -
Black Motor Wire (L1)
&
Red Motor Wire (L2)
Black Motor Wire (L1)
&
White Motor Wire (L3)
Red Motor Wire (L2)
&
White Motor Wire (L3)
03-008 P55YYDHB-1527 US Nema 1 1/2 208-230 316.1 16.1 16.1
03-008 P55YYDHB-1527 US Nema 1 1/2 460 363.6 63.6 63.6
03-009 48T17T135 Marathon Nema 1 1/2 575 3136 136 136
03-017 56T17T5541 Marathon Nema 1 1208-230 34.3 4.3 4.3
03-017 56T17T5541 Marathon Nema 1 1460 316.5 16.5 16.5
03-018 56T17T5544 Marathon Nema 1 1575 326.6 26.6 26.6
03-022 35N127S902 Baldor Washdown (IP54) 1208-230 35.1 5.1 5.1
03-022 35N127S902 Baldor Washdown (IP54) 1460 319.8 19.8 19.8
03-026 165716 Century Nema 1 3208-230 31.5 1.5 1.5
03-026 165716 Century Nema 1 3460 35.7 5.7 5.7
03-028 35E92Y26 Baldor Nema 1 3575 39.2 9.2 9.2
03-110 36H110-2211G1 Baldor Nema 1 1,2,3 208-230 33.5 3.5 3.5
03-110 36H110-2211G1 Baldor Nema 1 1,2,3 460 313.5 13.5 13.5
03-055 37F932W828G1 Baldor Nema 1 5230 30.7 0.7 0.7
03-055 37F932W828G1 Baldor Nema 1 5460 32.4 2.4 2.4
03-046 37F909X889G1 Baldor Nema 1 7230 30.6 0.6 0.6
03-046 37F909X889G1 Baldor Nema 1 7460 31.6 1.6 1.6
03-033 U639A - 215TTFC6027 Marathon Nema 1 10 208-230 30.4 0.4 0.4
03-033 U639A - 215TTFC6027 Marathon Nema 1 10 460 31.2 1.2 1.2
03-074 GT1128A 170118.60 Marathon Nema 1 25 575 30.5 0.5 0.5
BD
HV2, NH2,
PH12
EP2
WMI
WMH
STD2, N2,
PH10, QP10
Applicable
Air Curtain
Series
Mars Part #
HP
Voltage
Brand
Motor Rating
Manufacturer Part #
Phase
LEAD WIRE OHM READINGS
MOTOR WIRES OR TERMINAL (T) OHM READINGS
Single Phase Motors
MARS MOTOR RESTANCE READINGS
Three Phase Motors
LPV2, LPN2
STD2, N2,
PH10, QP10
HV2, NH2,
PH12

WARRANTY
Mars’ warranty coverage, period, extent, and
limitations apply to the product only. It does not apply
to labor. Mars warrants that Mars product 1) Is free
from defects in materials and workmanship and 2)
Conforms to Mars’ published specifications. The
warranty period for Mars WMI and WMH product is a
twelve (12) month period commencing on its date of
shipment. The date on customer’s invoice is the date
of shipment unless Mars or your reseller informs you
and Mars otherwise. Mars will provide free
replacement of any part that fails as a result of a
defect in material or manufacturer’s workmanship.
Changes in operational specification parameters that
are different from those provided on the original
purchase order are not covered. Mars product is
inspected and tested before packaging and is
shipped in working condition. The warranty for Mars
product only covers free-of-charge replacement of
failed parts. The warranty does not cover labor and
transportation expenses that may be required to
provide and to install replacement parts. Because in
many instances, it is impossible to determine the
cause of failure, customer may be responsible for
transportation charges associated with replacement
of failed part. Mars does not warrant uninterrupted or
error-free operation of Mars product. Under no
circumstance is Mars liable for any of the following:
1) Third-party claims against you for damages; or 2)
Special, incidental, or indirect damages or for any
economic consequential damages (including lost
profits and savings), even if Mars, its suppliers, or its
reseller is informed of their possibility. The warranty
does not cover repair or exchange of Mars product
resulting from misuse, accident, modification,
unsuitable physical or operating environment,
improper maintenance and installation by customer,
or failure caused by a product for which Mars is not
responsible. The warranty does not cover damages
caused by mishandling during transportation. The
warranty is voided by removal or alteration of Mars
product or parts identification labels, by improper
installation of product, and resulting non-compliance
to federal, state, and local codes and regulations.
Additionally, Mars reserves the right to void the
warranty for non-payment of invoice.
CONTACT FACTORY FOR COMPLETE PARTS
LIST FOR ALL MODELS.
KEEP THIS MANUAL FOR YOUR RECORDS.
Model Number:______________________________
Serial Number: ______________________________
Date Purchased: ____________________________
Dealer Purchased From: ______________________
14716 S. Broadway St., Gardena, CA 90248
(310) 532–1555 ● [phone]
Fax: [phone]
Please go to our website at www.marsair.com for a
downloadable version of this document.

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23 24 33.14 – 1
SECTION 23 24 33.14
AIR CURTAINS
Important Note: This specification contains hidden text appearing in red. To show or remove hidden text
in MSWord, click the “File” tab or “Office” icon on the top-left corner, select “Options,” select
“Display,” and check or uncheck the box marked “Hidden Text.”
PART 1 GENERAL
1.1 SECTION INCLUDES
A. Air curtains for pedestrian entrances.
B. Air curtains for vehicular entrances.
C. Air curtains for large loading dock doors.
1.2 RELATED SECTIONS
A. Section 05 50 00 – Metal Fabrications: Concealed steel support members.
B. Section 06 10 00 – Rough Carpentry.
C. Section 05 41 00 – Structural Metal Studs.
D. Section 07 62 00 – Sheet metal flashing.
E. Section 07 92 00 – Joint Sealants.
F. Section 08 10 00 – Metal Doors and Frames.
G. Section 08 33 00 – Overhead Coiling Doors.
H. Section 08 42 00 – Entrance Doors.
I. Section 22 10 00 – Plumbing Piping:
J. Section 23 21 00 – Hydronic Piping: Hot water heating piping to units.

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23 24 33.14 – 2
K. Section 23 22 13- Steam and Condensate Piping: Steam heating piping to units.
L. Section 26 05 00 – Equipment Wiring: Connections to building power distribution.
1.3 REFERENCES
A. ASTM A240 / A240M -10 – Standard Specification for Chromium and Chromium.
B. ASTM A591 / A591M -98 – Standard Specification for Steel Sheet, Electrolytic Zinc-
Coated, for Light Coating Weight (Mass) Application (Withdrawn in 2005, replaced by
A879/A879M).
C. ASTM A879 / A879M -06 – Standard Specification for Steel Sheet, Zinc Coated by the
Electrolytic Process for Application Requiring Designation of the Coating Mass on Each
Surface.
D. ASTM A653 / A653M -09a – Standard Specification for Steel Sheet, Zinc Coated
(Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process.
E. AHRI 410-2001 – Standard for Forced-Circulation Air-cooling and Air-Heating Coils.
F. CRN – Canadian Registration Number Coil.
G. ANSI Z223-NFPA 54 – National Fuel Gas Code/
H. NEC – National Electric Code.
1.4 SUBMITTALS
A. Submit under provisions of Section 01 33 00.
B. Product Data: Manufacturer's data sheets on each product to be used, including:
1. Preparation instructions and recommendations.
2. Storage and handling requirements and recommendations.
3. Installation methods.
C. Shop Drawings: Include plans, elevations, sections, and details, indicating dimensions,
tolerances, materials, fasteners, hardware, finish, piping, electrical wiring diagrams,
options, and accessories.
D. LEED Submittals: Provide documentation of how the requirements of Credit will be met:
1. List of proposed materials with recycled content. Indicate post-consumer
recycled content and pre-consumer recycled content for each product having
recycled content.
2. Product data and certification letter indicating percentages by weight of post-
consumer and pre-consumer recycled content for products having recycled
content.

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23 24 33.14 – 3
E. Selection Samples: For each finish product specified, two complete sets of color chips
representing manufacturer's full range of available colors and patterns.
F. Verification Samples: For each finish product specified, two samples, minimum size 6.25
inches (160 mm) square, representing actual product, color, and patterns.
G. Manufacturer's Certificates: Certify products meet or exceed specified requirements.
H. Operation and Maintenance Manual: Submit manufacturer's operation and maintenance
manual, including operation, maintenance, adjustment, and cleaning instructions,
troubleshooting guide, parts list, and electrical wiring diagrams.
1.5 QUALITY ASSURANCE
A. Manufacturer Qualifications: Minimum ten years documented experience producing the
products specified in this Section
B. Installer Qualifications: Minimum five years documented experience installing products
specified in this Section
1.6 DELIVERY, STORAGE, AND HANDLING
A. Store products in manufacturer's unopened packaging until ready for installation.
B. Store in a dry, heated storage area until installation of products.
C. Protect materials and finish from damage during handling and installation.
1.7 SEQUENCING
A. Ensure that locating templates and other information required for installation of products
of this section are furnished to affected trades in time to prevent interruption of
construction progress.
B. Coordinate the installation of wiring and control switches for air curtains with the
openings and the hardware provided for such openings.
C. Install after doors, walls, ceilings, and other adjacent surfaces are finished and painted.
1.8 WARRANTY
A. Standard one-year limited parts warranty for unheated units against defects in
workmanship and material.
B. Standard one-year limited parts warranty for heated units against defects in workmanship
and materials.

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23 24 33.14 – 4
PART 2 PRODUCTS
2.1 MANUFACTURER
A. Acceptable Manufacturer: Mars Air Systems, LLC; 14716 South Broadway St., Gardena,
CA 90248. Tel: [phone] or [phone]. Fax: [phone]. Email:
[e-mail]. Web: www.marsair.com.
B. Delete one of the following two paragraphs: coordinate with requirements of Division 1
section on product options and substitutions.
C. Requests for substitutions will be considered in accordance with provisions of Section 01
33 00.
2.2 AIR CURTAIN ASSEMBLIES
A. Motor Fan Assembly: Design for easy removal, assembly, repair and maintenance.
1. Motor: Totally enclosed air over (TEAO) motor with sealed lifetime pre-
lubricated ball bearings.
a. Wired for single speed operation, but inverter rated.
b. Provide wash down type motors, NEC IP-54 for the locations indicated.
c. Provide explosion proof type motors, NEC Class 1, Division 1, Group D
for the locations indicated.
d. Electrical Characteristics: 208/230V AC, three-phase; 19.0/15.8 Amp
full load per motor/fan.
e. Electrical Characteristics: 460V AC, three-phase; 7.9 Amp full load per
motor/fan.
f. Electrical Characteristics: 575V AC, three-phase; 6.3Amp full load per
motor/fan.
g. Meets NEC, CSA Listed.
2. Fans: Forward curved centrifugal type, double width, and double inlet design,
directly driven to an electric motor.
a. Provide rigid mounted base between motor and frame.
b. Factory balanced blower wheel assembly statically and dynamically.
B. Housing: Self-contained one-piece type with sufficient strength for mounting from pre-
punched mounting holes at both ends to adjacent walls or ceiling without intermediate
support.
1. Size:
a. Unheated: 22 inches deep by 22 inches high by width of unit.
b. Electric Heated: 28 inches deep by 22 inches high by width of unit.
c. Hot Water/Steam Heated: 28 inches deep by 22 inches high by width of
unit plus 10 inches for manifolds.
d. Indirect Fired Gas Heated: 78 1/2 inches deep (including transition and
furnace) by 33 inches high by width of unit
2. Mounting:
a. Unheated Inside Mount.
b. Heated Inside Mount.
c. Unheated Outside Mount.

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23 24 33.14 – 5
d. Mount Location Indicated.
3. Material:
a. Provide 10-, 12-, and 14-gauge electro or hot dipped galvanized steel
sheet housing conforming to ASTM A 591 and/or ASTM A 653.
b. Provide type 304 stainless steel housing with brushed finish. ASTM A
240/A 240M.
4. Air Inlet Grille and/or Filters: Provide air inlet grille and/or filters specified.
5. Discharge: Provide integral discharge nozzle specified.
6. Finish and Color: Provide with, no VOC, corrosion resistant polyurethane
powder coated finish for sheet metal housings.
a. Titanium Silver.
b. Obsidian Black.
c. Pearl White.
d. Stainless Steel.
C. Environmental and Flying Insect Control Air Curtains: Models for Heights up to 20 feet
(6096 mm) for Environmental Separation and Temperature Control and up to 18 feet
(5486 mm) for Flying Insect Control.
1. Discharge Nozzle: Adjustable air foil vanes with a plus/minus 40-degree sweep
front to back.
2. Air Velocity at Nozzle:
a. WMH 96-2: 99 Inch (2516 mm) Wide Units: 3732 feet/min (18.9 m/s)
two 5HP motor/fan assemblies.
b. WMH 120-2: 123 Inch (3126 mm) Wide Units: 4057 feet/min (20.6 m/s)
two 5HP motor/fan assemblies.
c. WMH 144-2: 147 Inch (3736 mm) Wide Units: 3816 feet/min (19.4 m/s)
two 7HP motor/fan assemblies.
d. WMH 168-3: 171 Inch (4346 mm) Wide Units: 3822 feet/min (19.4 m/s)
three 5HP motor/fan assemblies.
e. WMH 192-4: 195 Inch (4956 mm) Wide Units: 3722 feet/min (18.9 m/s)
four 5HP motor/fan assemblies.
3. Air Speed at Floor: Minimum of 300 fpm (1.53 m/s) at 3 feet (914 mm) from the
floor.
4. Air Inlet Grille and Filters:
a. Location: Front.
b. Type: Fixed air intake grille.
1) Expanded Metal: 85% open area.
c. Type: Filter Only as follows:
1) Filter: Flat bank 2-inch, disposable.
2) Filter: V-bank 2-inch disposable.
3) Filter: V-bank 2-inch aluminum washable.
5. Sound Pressure Level At 10 feet (3 m) From Nozzle:
a. Two Motor/Fan, 5HP Units: 69 dBA.
b. Two Motor/Fan, 7HP Units: 72 dBA.
c. Three Motor/Fan, 5HP Units: 70 dBA.
d. Three Motor/Fan, 7HP Units: 72 dBA.
e. Four Motor/Fan, 5HP Units: 72 dBA.

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23 24 33.14 – 6
2.3 COMPONENTS
A. Electric Heaters: Provide complete with motor control panel factory mounted to air
curtain housing, and thermostat to be field installed.
1. Temperature limit controller.
2. Heating Coils: UL approved. Factory mounted on the intake side of the air
curtain cabinet.
B. Steam Heaters: Provide finned tube steam coils for field mounting on air intake side of
the air curtain cabinet with opposite end connections.
1. Output: Air curtain manufacturer's standard, one-row coils.
2. Output: Air curtain manufacturer's standard, two-row coils.
3. Coils: Certified in accordance with AHRI 410.
4. Connections: Opposite end, horizontal.
5. Connections: Same end, right hand, horizontal.
6. Connections: Same end, left hand, horizontal.
7. Connections: Opposite end, vertical.
8. Connections: Same end, right hand, vertical.
9. Connections: Same end, left hand, vertical.
10. Casing: One-piece unpainted galvanized steel, bolted to air curtain housing.
C. Hot Water Heaters: Provide finned tube water coils for field mounting on air intake side
of the air curtain cabinet with opposite end connections.
1. Output: Air curtain manufacturer's standard, one-row coils.
2. Output: Air curtain manufacturer's standard, two-row coils.
3. Coils: Certified in accordance with AHRI 410.
4. Connections: Opposite end, horizontal.
5. Connections: Same end, right hand, horizontal.
6. Connections: Same end, left hand, horizontal.
7. Connections: Opposite end, vertical.
8. Connections: Same end, right hand, vertical.
9. Connections: Same end, left hand, vertical.
10. Casing: One-piece unpainted galvanized steel, bolted to air curtain housing.
D. Gas Heaters: Provide field mounted indirect natural gas fired, power vented duct furnace,
with aluminized steel heat exchanger and die-formed stainless steel insert burners;
manifolds, orifices, flame sensor, and igniter easily removable as an assembly.
1. Output: Air curtain manufacturer's standard.
2. Complies with:
a. Canadian Standards Association (CSA) labeled for US and Canadian
application.
b. ANSI Z223/NFPA 54 National Fuel Gas Code.
c. CAN/CGA B149.1 Installation Codes for Natural Gas Burning
Appliances and Equipment.
d. Coils: Certified in accordance with AHRI 410.
3. Fuel Type: Provide orifices for:
a. Natural gas.
b. LP.
4. 24 V control voltage transformer.