Mars WMI Series User manual

WMI 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
WMI Indirect Gas Fired
Heated Series
Wind Stopping 14
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)

WMI 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 WMI Indirect Gas Fired Submittals
5-6 Typical Indirect Gas Fired Wiring Diagrams
7 Thermostat Submittals
8-9 Accessory Installation Supplement
10-11 Furnace Specifications
12-15 Installation, Operation and Maintenance
16-17 Heated Products Supplement
18-19 Troubleshooting Guide
20 Warranty
21-29 CSI Spec
30 Reference Links

WMI (Wind Stopping 14) Series
Indirect Gas Fired
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 AR, 3/16/23
WMI
Series: Wind Stopping 14
144 2 I H TS
LENGTH OF UNIT
# OF MOTORS
VOLTAGE CODE
COLOR
EXAMPLE
Indirect Gas Fired Data Sheet
Applications: Environmental Separation = Max Height 16’ / Insect Control = Max Height 14’
Features:
Air Curtain and Transition
2 to 3 HP continuous duty industrial motors
Direct drive unit for heavy duty industrial projects
Top mounting holes provided (5/8”)
Cabinet has sufficient strength for fastening from overhead on both
ends without intermediate support
Adjustable air directional vanes with 40° sweep front to back
Transition is shipped fully assembled and fastened to unit (overhead
support required)
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
Indirect Gas Fired Furnaces
ETL verified to be 83% efficient
In-shot burner technology
Aluminized tubular heat exchanger (20 gauge)
Positive pressure 120V impellers (separate 120V, 1Ø power required)
Power vented exhaust
Single stage gas valve
Standard direct spark ignition
Certified for Category I and III Venting
Natural gas
Factory test fired
Overhead mounting hardware provided (2 per furnace)
Mars Recommended Accessories (see submittals for additional details):
Door limit switches
o99-125, Industrial surface-mounted door limit switch
Controllers
oMCP*-†I‡, Motor Control Panel, 24V control voltage (* = HP Code, † = # of Motors, ‡ =
Voltage Code)
Note: possible HP Codes = C (2 HP), D (3 HP)
MCP-TD, Adjustable time delay, 1sec-100hr (panel required)
IDF-2STG, Two-stage heat exchanger
IDF-SS, 409 stainless steel heat exchanger
IDF-MOD-RS, Electronic modulating gas valve for room sensor (0-10VDC/4-20mA control voltage by others)
Sound Levels: (measured at 10’ in an open field)
2 Motor Unit = 66 dBA, 3 Motor Unit = 67 dBA, 4 Motor Unit = 68dBA
WMI (Wind
Stopping 14)
Model Number
Nozzle Length
(in)
Length
(in)
Depth
(in)
Height
(in)
Motor
(hp)
Total
Weight**
(lbs)
Furnace
Weight
(lbs)
Max Velocity
(fpm)
Max Volume
(cfm)
Avg
Velocity
(fpm)
Volume
(cfm)
Uniformity
(%)
Power Rating
(watts)
WMI96-2I*-TS 96 99 78 1/2 33 Two 2 944 1 @ 335 5500 16500 2614 7842 92 4260
WMI108-2I*-TS 108 111 78 1/2 33 Two 3 1096 2 @ 211 4900 16538 2920 9314 84 5380
WMI120-2I*-TS 120 123 78 1/2 33 Two 3 1146 2 @ 211 5200 19500 3205 9474 90 5600
WMI144-2I*-TS 144 147 78 1/2 33 Two 3 1498 2 @ 335 5800 26100 3009 13422 86 6340
WMI168-3I*-TS 168 171 78 1/2 33 Three 3 1702 2 @ 335 4900 25725 2920 15060 84 8070
WMI180-3I*-TS 180 183 78 1/2 33 Three 3 2003 3 @ 307 5200 29250 3205 15372 90 8290
WMI192-4I*-TS 192 195 78 1/2 33 Four 2 2122 3 @ 307 5500 33000 2614 15684 92 8520
* - 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.
** - Total Weight includes air curtain, transition, and furnace weights.
Mechanical Data
Lab Data
Furnace
208/230v/3Ø
(G)
460v/3Ø
(H)
575v/3Ø
(I) 115V
WMI96-2I*-TS 14.4/14.0 7.0 4.6 13.5
WMI108-2I*-TS 28.4/21.2 10.6 9.0 16.0
WMI120-2I*-TS 28.4/21.2 10.6 4.6 16.0
WMI144-2I*-TS 28.4/21.2 10.6 4.6 27.0
WMI168-3I*-TS 42.6/31.8 15.9 6.9 27.0
WMI180-3I*-TS 42.6/31.8 15.9 6.9 33.9
WMI192-4I*-TS 28.8/28.0 14.0 9.2 33.9
* - Use corresponding letters in"Electrical Data" columns to complete the model numbers.
Alternate voltage codes with FLA (Full Load Amp) data:
380-415V/3Ø/50Hz (W) - consult factory
Unit Voltage
(Voltage Code)
Note: For ampacity, multiply FLA X 1.25
Electrical Data
(FLA)
Furnace Only
Model Number
# of
Furnaces
Input MBH
per
Furnace
Total
Output
MBH
Temp Rise
(°F)
Flue
Size
Natural Gas
(NPT) CONN
WMI96-2I*-TS
1400 332 39 6" Rnd 3/4"
WMI108-2I*-TS
2250 415 41 5" Rnd 1/2"
WMI120-2I*-TS
2250 415 41 5" Rnd 1/2"
WMI144-2I*-TS
2400 664 46 6" Rnd 3/4"
WMI168-3I*-TS
2400 664 41 6" Rnd 3/4"
WMI180-3I*-TS
3300 747 45 6" Rnd 3/4"
WMI192-4I*-TS
3300 747 44 6" Rnd 3/4"
* - Use corresponding letters in"Electrical Data" columns to complete the model numbers.
Note: Gas pressure required min/max in (“wc)(kPa): Natural Gas (3.5/14)(0.9/3.5) and LP (10/14)(2.5/3.5)
Indirect Fired Gas Data

Thermostats
Line voltage to low voltage Models
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, 09/22/22
5 1/4"
3 3/4"
99-263 – Thermostat, 24 Volt, Digital, Single Stage.,
R.G.W.Y.B.O., Battery Power
Thermostats
Features:
Allows automatic control of heated air
Remote mounted (field installed by others)
Temperature range from 50F to 90F
Regulates the heat near the air curtain
Analog Bimetal Temperature Sensing
Thermostats are UR (UL Recognized)
1 year warranty
Line Voltage (99-063, 99-064)
Applicable for all Hot Water/Steam Heated and WM/BD Electric models
Single Stage, Single Pole (99-063) or Double Stage, Double pole (99-064), up to 250V
Remote Wall Mounted by others
Requires Junction Box (J-Box field supplied and installed)
Low voltage (99-264, 99-263)
Applicable for STD2, HV2, EP2, PH Electric models and for all Gas Heated models
oIncluded with STD2, HV2, EP2, PH Electric models
Low voltage (24V) control
Fan and Heat Control Switch
Remote Wall Mounted by others
*Do not mount low voltage thermostat greater than 30ft from the air curtain. Mounting the low voltage thermostat too far
from the air curtain may cause a voltage drop and cause chattering.
Options and Accessories:
2 Stage Line Voltage Thermostat
Digital Programmable Low Voltage Thermostat
Digital Low Voltage Thermostat with Battery Backup
Factory Wired and Installed Thermostat
Lockable clear cover
Thermostat Part # Description Applicable Air Curtain Series
99-063 Thermostat, 801, Line Voltage, Up to 250V, Analog, Single Stage, Single Pole
All Hot Water / Steam
99-064 Thermostat, 802, Line Voltage, Up to 250V, Analog, Two Stage, Double Pole
WM/BD Electric
99-264 Thermostat, 9200H, 24 Volt, Digital, Single Pole, R.G.W.Y.B.O.
Elec LPV2, STD2, HV2, EP2, PH &
All Gas Fired
99-263 Thermostat, RS4110, 24 Volt, Digital, Single Pole, R.G.W.Y.B.O., Battery Power
Elec LPV2, STD2, HV2, EP2, PH &
All Gas Fired
99-182 - Cover, Lockable, Clear
6"
2 7/8"
4 3/4"
99-063 – Thermostat, 801, Line Voltage,
Single Stage, Single Pole
99-264 – Thermostat, 24 Volt, Digital, Single Stage,
R.G.W.Y.B.O.

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

Commercial/Light Commercial Unit Heaters
XF/XC SERIES
STANDARD FEATURES OPTIONAL FEATURES
XFC-1
• Standard or separated combustion all-in-one units
• 20-gauge aluminized steel tubular heat exchanger
• 83% thermal efficiency
• Power venter
• 20-gauge steel cabinetry with baked enamel finish
• Direct spark ignition system
• Redundant single stage gas valve
• Rear burner access for ease of service
• Individually adjustable and removable horizontal louvers
• 10-year heat exchanger, flue collector and burner warranty
• Stainless steel heat exchanger, burners, and/or flue collector
• Two stage and various electronic modulation gas controls
• Discharge nozzles (30°, 60° & 90°)
• Combustion air inlet kits (concentric vent)
• Supply voltages: 208 & 230/1/60 and 208, 230, 460,
575/3/60