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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

  to align with the stud 

spacing. 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. 

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) 

3.  All 3 phase motors are bi-directional, which means they 

can rotate in either direction. Follow directional arrows 

on the blower wheel housings for proper rotation. If the 

motor is rotating incorrectly, switch two of the 3 phase  

 

 WARNING 

Precaution should be taken in explosive atmospheres.

 

Summary of Contents for STD2 Unheated 2 Series

Page 1: ...thout 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 STD2 Unheate...

Page 2: ...tice 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 Pa...

Page 3: ......

Page 4: ...A Proudly Made in the USA Note All STD2 1 motor units up to 48 are shipped with the Motor Fan Assembly MFA factory installed inside the air curtain housing For all other models the MFA are shipped loo...

Page 5: ......

Page 6: ...nged 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...

Page 7: ...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 installa...

Page 8: ...itation 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 intak...

Page 9: ...nside the product to align with the stud spacing 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...

Page 10: ...lied 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 pro...

Page 11: ...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 Installat...

Page 12: ...on 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 p...

Page 13: ...ma 1 1 115 1 1 6 2 4 03 015 7124 1096 Genteq Nema 1 1 208 230 1 6 5 9 2 03 015 Nidec Nema 1 1 208 230 1 4 3 6 5 03 014 K55BWJZB 2362 US Nema 1 1 115 1 1 2 1 03 015 US Nema 1 1 208 230 1 3 2 6 3 Black...

Page 14: ...omer 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...

Page 15: ...DES 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 stee...

Page 16: ...ol Panels F UL 1995 CSA 22 2 UL Standard for Safety Heating and Cooling Equipment Intertek Testing Services Listed for US and Canada G UL 2021 CSA 22 2 Standard for Fixed and Location Dedicated Electr...

Page 17: ...sh 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 requireme...

Page 18: ...ns 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...

Page 19: ...e row by 10 5 8 inches high including discharge nozzle by width of unit plus 10 inches for manifolds 2 Mounting a Unheated Inside Mount b Heated Inside Mount c Unheated Outside Mount d Mount Location...

Page 20: ...nimum 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 Filter Aluminum mesh 1 4 inch 6 4 mm washable c Type Filter O...

Page 21: ...from floor 4 Air Inlet Grille and Filters a Location Front b Speed 2550 cu ft min 1200 L s minimum per motor fan assembly 1 Type Fixed air intake grille 5 Sound Pressure Level At 10 feet 3 m From Noz...

Page 22: ...to air curtain housing 9 Supply and return fittings on top of casing 10 Thermostat Wall mounted 110 Volt operation with heater on off selection 11 Thermostat Wall mounted 208 230 Volt operation with...

Page 23: ...assive Adaptive e Factory Integrated temperature control sensors No external thermostat required f Summer Winter modes g 24 7 timer h Maintenance schedule alerts i Status display showing date time tem...

Page 24: ...20 amps limit switch to control air curtain s as follows Automatic on off control activates air curtain when door is opened and turns off when door is closed Provide limit switch for direct control on...

Page 25: ...tight without warp or rack C Anchor air curtains securely in place to supports D Coordinate with sheet metal flashing as specified in Section 07 62 00 E Install joint sealants as specified in Section...

Page 26: ...manufacturer s instructions and as approved by Architect C Remove and replace damaged components that cannot be successfully repaired as determined by Architect 3 5 PROTECTION A Protect materials and...

Page 27: ...evisions do not entitle the buyer to corresponding changes improvements additions or replacements for previously purchased equipment MARS AIR SYSTEMS LLC GARDENA CA USA Reference Links Link Descriptio...

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