Mars Air WMH-108 Installation Manual

Document No: W-IOM
Date: 1015

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 (14’)
and WMH Series
(16’). 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

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.

Precaution should be taken in explosive atmospheres.

WARNING

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.

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)