Mars Air EP2-48 Installation Manual

Document No: IND2-IOM

Date: 1015

STANDARD 2 (STD2), HIGH VELOCITY 2 (HV2), EXTRA POWER 2 (EP2)

AND ETL SANITATION CERTIFIED 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:
Standard 2 Series
(Environmental up to 10’,
Flying Insect Control up to 8’),
High Velocity 2 Series
(Environmental up to 12’,
Flying Insect Control up to 10’), and Extra Power 2
Series (Environmental up to 16’, Flying Insect Control
up to 14’). All ETL Sanitation Certified Series should be
mounted at the Flying Insect Control heights referenced
above. The units are typically wall mounted horizontally
above the door opening. They can also be suspended
from the ceiling or vertically mounted along side the
opening. The units are ETL Listed for either an inside
or outside mount. Heated units must be mounted on
the inside or the protected side of the opening. The
motors used in the Standard 2, High Velocity 2 and
Extra Power 2 Series are 1/2HP, 1HP and 3HP
respectively. The ETL Sanitation Series utilizes 1/2HP
and 1HP motors.

The Standard 2, High Velocity 2 and Extra Power 2
Series come standard with an air intake grille. They can
also be configured with an aluminum mesh air intake
filter instead of the air intake grille or in conjunction with
it.

GENERAL SAFETY INFORMATION
Use this product only in the manner intended by the

coming in contact with moving parts, as well as other
potential hazards.

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.

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

1

WARNING

Precaution should be taken in explosive atmospheres.

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. Remove the air intake grille(s) and/or filter(s) from the
product and set aside. Only products 48” or less,
except HV2 and EP2 models, are shipped with the
motor fan assembly (MFA) mounted inside.

2. Measure the housing and center it over the opening.
The air curtain shall be equal to or greater than the
width of the opening.

3. Total of two (2) key-hole slots and six (6) pre-punched
mounting holes are provided for your convenience.
The 7/16” pre-punched holes (4) provided, (2) on each
end for top/celling mounts. The 1/2” key-hole slot and
7/16” pre-punched hole (2) provided, (2) on each end
for wall mounts. These holes must be utilized to secure
the product to the wall or ceiling. If necessary, holes
may be drilled inside the product
spacing. All hardware is field provided by others.

to align with the stud

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.

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, optional Adjustable Mounting Brackets,
Side Extension Plates and Extended Wall Mounted
Brackets are also available for installations over a
Vertical Lift or Drum Roll-up type door. (Reference
Accessory Installation Supplement)

7. 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)

8. All wires must be connected internal of the unit and
some knockouts are provided. However, it may be
necessary to create your own knockout, as required.

9. The unit must be wired per NEC and local codes.

FIG. 1

Motor Fan Assembly Installation and Electrical Field
Wiring

1. Once the housing is installed over the opening, the
Motor Fan Assembly (MFA) must be re-placed and
securely fastened. For products with the MFA shipped
loose, wing nuts or hex nuts are provided inside the
unit (FIG. 2). For heated MFA installation, reference
Heated Products Supplement Sheet.

2. The unit and any optional accessories must be wired
with the proper voltage to the junction box per the
wiring diagram. (FIG. 3, unheated products only)

2