Voltaire NOMINAL 300 CFM User manual

www.voltairesys.com
Phone: [phone]
2900 W. Orange Ave. Ste. 100
Apopka, FL 32703
VoltAire Systems, LLC VoltAire Doc. # DA0322A
Published: June 13, 2023
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
FOR PRESSURIZATION MODULE (WITH PLENUM FOR W18-W36 AIR
CONDITIONER MODELS)
NOMINAL 300 & 450 CFM FOR
BARD W18 THROUGH W36 UNITS
115VAC & 208/230VAC Models
* A more recentrevision may be available at www.voltairesys.com or the QR Code in the top right corner of every page.

Pressurization Module with
Plenum Installation, Operation
and Maintenance Manual
VoltAire Systems, LLC
Specifications are subject to change without notice
Page 2 of 20
VoltAire Doc. # DA0322A
Published: June 13, 2023
TABLE OF CONTENTS
1. Important Information to Review Prior to Installation, Operation and Maintenance........................................................Page 3
2. Parts Shipped Loose and Tools Required/Materials Provided by the Installer................................................................Page 3
3. Product Description ..........................................................................................................................................................Page 4
4. Important Application Notes..............................................................................................................................................Page 4
5. General Product Data .......................................................................................................................................................Page 5
6. Installation Instructions......................................................................................................................................................Page 7
7. Startup and Maintenance Instructions............................................................................................................................Page 12
8. Troubleshooting Guide....................................................................................................................................................Page 12
9. Wiring Diagram (No External Controls or Damper)........................................................................................................Page 14
Wiring Diagram (Option A – with Shutdown Control).....................................................................................................Page 15
Wiring Diagram (Option B – with Damper and Shutdown Control)................................................................................Page 16
Wiring Diagram (Option C - with HVAC Interlock Control).............................................................................................Page 17
Wiring Diagram (Option D – with Damper, HVAC Interlock and Shutdown Controls)...................................................Page 18
10. Warranty..........................................................................................................................................................................Page 19

Pressurization Module with
Plenum Installation, Operation
and Maintenance Manual
VoltAire Systems, LLC
Specifications are subject to change without notice
Page 3 of 20
VoltAire Doc. # DA0322A
Published: June 13, 2023
1. IMPORTANT INFORMATION TO REVIEW PRIOR TO INSTALLATION,
OPERATION AND MAINTENANCE
 READ THE ENTIRE MANUAL PRIOR TO INSTALLING, OPERATING AND MAINTAINING the VoltAire Systems
Pressurization Module. Do not install or perform maintenance on the equipment if you do not understand all of the
instructions. Contact VoltAire Systems at [phone] with any questions or concerns.
 The pressurization module should be fully inspected on initial delivery. Open the packaging completely at the time of
initial delivery and verify there is no hidden or concealed damage. Shipping damage, including concealed damage, is
not covered under warranty. Reject the shipment if any damageis found.
 WARNING: IMPROPER INSTALLATION AND OPERATION MAY CAUSE PROPERTY DAMAGE, PERSONAL
INJURY OR LOSS OF LIFE. The pressurization module shall only be installed andserviced by a certified professional in
strict accordance with the requirements within this manual,in accordance with all local/state/federal codes, and per
industry standards. Remove power from the unit during maintenanceand installation, as linevoltage may be dangerous,
hazardous and lethal.
 In the event of a conflict, code requirements shall take precedence over the instructions provided within this manual. The
installer shall be aware of allcode requirements and shall comply fully.
 Use care when transporting and lifting the pressurization module.
 WARNING: WEAR PROPER PERSONAL PROTECTION EQUIPMENT, INCLUDING BUT NOT LIMITED TO SAFETY
GLASSES, GOGGLES, AND GLOVES. EDGES MAY BE SHARP.
 A field provided disconnect must be provided by the installer with the power supply circuit serving thepressurization
module. The installer shall size the electrical wire and disconnect in accordance with all applicable codes. Verify wire
terminals and voltageprior to starting the pressurization module, otherwise you may damage the electrical components.
 These instructions should be retained by the owner and/or with the unit.
2. PARTS SHIPPED LOOSE AND TOOLS/MATERIALS PROVIDED BY THE
INSTALLER
Materials shipped loose in addition to this manual are as follows:
a) Ship Loose Kit
DESCRIPTION PART NUMBER
Pressurization Module Ship Loose Kit D0Z0007VAA
Pressurization Module Plenum Ship Loose Kit D0Z0008VAA
b) Bard Economizer Exhaust Modification Kit (Optional, Sold Separately)
DESCRIPTION PART NUMBER
W18-W24 Economizer Exhaust Mod
Field Kit
(
Bard Models W18-W24
)
W18-W24ECONMODKIT
W30-W36 Economizer Exhaust Mod
Field Kit (Bard Models W18-W24) W30-W36ECONMODKIT

Pressurization Module with
Plenum Installation, Operation
and Maintenance Manual
VoltAire Systems, LLC
Specifications are subject to change without notice
Page 4 of 20
VoltAire Doc. # DA0322A
Published: June 13, 2023
Required Tools and Materials provided by Installer:
a. Electrical service wire and disconnect, and
associated electric tools
b. Exterior rated silicone or other exterior sealant
c. Foil sealing tape
d. Flathead and phillips head driver/bit
e. 5/16” Hex head drill bit
f. Jigsaw / Reciprocating saw
g. Personal Protection Equipment
3. PRODUCT DESCRIPTION
VoltAire Systems pressurization modules are designed to be mounted on Bard HVAC Units, sizes 1.5 to 3 tons
(W18 through W36), to provide fan powered pressurization air through the Bard unit and into the building, providing
positive pressure to the building after pre-conditioning the outside air with the Bard unit. The amount of
pressurization air required is a function ofthe building/room size and tightness/sealing. The pressurization module
provides a pre-filter/mist eliminator and 2” MERV 8Filter to provide filtration. The pressurization module fan speed
is manually adjusted utilizing the potentiometer. It is important to note that the units must be ordered for either a
right hand or left hand mounting orientation.
It is highly recommended that Bard units paired with the VoltAire Systems Pressurization Module be supplied with
independent humidity control for any sites where ambient humidity may be higher than the desired building interior
humidity.
4. IMPORTANT APPLICATION NOTES
 HVAC independent humidity control highly recommended for mild to high humid environments due to fresh air
pressurization.
 Positive pressurization requires a well-sealed building/room envelope. Take extraordinary means to ensure
envelope sealing.
 If HVAC units are equipped with economizers, special accommodations may be required to the HVAC unit as
building/room pressure will be affected by economizer operation.
 Consider outdoor air load in HVAC sizing calculations to ensure proper heating, cooling, and
dehumidification for outside air provided by the pressurization module.

Pressurization Module with
Plenum Installation, Operation
and Maintenance Manual
VoltAire Systems, LLC
Specifications are subject to change without notice
Page 5 of 20
VoltAire Doc. # DA0322A
Published: June 13, 2023
5. GENERAL PRODUCT DATA
FIGURE 1: PRESSURIZATION MODULE MODEL NOMENCLATURE
FIGURE 2: PRESSURIZATION MODULE PLENUM MODEL NOMENCLATURE

Pressurization Module with
Plenum Installation, Operation
and Maintenance Manual
VoltAire Systems, LLC
Specifications are subject to change without notice
Page 6 of 20
VoltAire Doc. # DA0322A
Published: June 13, 2023
FIGURE 3: PRODUCT CONFIGURATIONS (LEFT OR RIGHT)
FRONT OF BARD UNIT WITH RIGHT HAND SIDE PRESSURIZATION MODULE (WITH PLENUM)
FIGURE 4: GENERAL CONFIGURATION AND AIRFLOW
FIGURE 5: DIMENSIONS

Pressurization Module with
Plenum Installation, Operation
and Maintenance Manual
VoltAire Systems, LLC
Specifications are subject to change without notice
Page 7 of 20
VoltAire Doc. # DA0322A
Published: June 13, 2023
6. INSTALLATION INSTRUCTIONS
WARNING: REVIEW THIS MANUAL COMPLETELY PRIOR TO BEGINNING INSTALLATION OR SERVICE.
FAILURE TO DO SO MAY RESULT IN IMPROPER OPERATION, UNIT DAMAGE, AND/OR PERSONAL/BODILY
HARM. PRESSURIZATION MODULES MUST ONLY BE INSTALLED BY PROPERLY TRAINED AND
EXPERIENCED TECHNICIANS.
The Pressurization Module is designed to use a Plenum adapter tofit on Bard HVAC models W18 to W36. The Plenum
requires a 10 by 10 inch cutout to be made on the side panel. Two pre-existing screws are used to assist with hanging
the Plenum. After the Plenum is hung, 8 self-tapping screws will be used to fix theplenum in place. The main
Pressurization Module may then be affixed to the Plenum.
Installation steps are as follows and note that your distributor might have completed some or all of the steps.
1. Prepare the Bard side panel for removal of the 10” x10” cutout. The cutout is located below the filter
assembly in the approximate location shown. Mark the cut out area and using a tape measure and visual
inspection, verify that the cutout will not conflict with any internal piping and/or components. Be cautious of
cutting blade depth. After the material is removed from the cutout, deburr and clean the cutout as necessary
ensuring the side panel is clean of any metal shavings, dust, and/or debris.
WARNING! After marking the cutout
opening location, check the interior of the
HVAC unit within the cutout area footprint to
verify there are no copper pipes, wires, and
other HVAC unit components that will be
damaged by the cutting blade.
Bard Side Panel Shown
FIGURE 6: CUTOUT AREA
2. Using foil tape (field supplied), tape the metal edge and internal insulation to provide a clean edge as shown

Pressurization Module with
Plenum Installation, Operation
and Maintenance Manual
VoltAire Systems, LLC
Specifications are subject to change without notice
Page 8 of 20
VoltAire Doc. # DA0322A
Published: June 13, 2023
below.
FIGURE 7: PLENUM OPENING WITH TAPED EDGES
3. Install the Plenum gasket kit as shown in Figure 8 below. The figure shows the gasket area. Note that the
15.625-inch lengthpiece runs across the top of the unit.
FIGURE 8: PLENUM GASKET AREA
4. After installation of the Plenum gasket kit, utilize the pre-existing screws on the Bard side panel and the
marked holes on the Plenum, mount the Plenum onto the Bard unit. The approximate location of the Bard
screws are shown in Figure 9. Note that these screws hold the filter rack bracket in place on the Bard unit and
the filter rack may need to be re-located back in place duringinstallation. Your plenum gasket side should
mount against the Bard side panel. Before fully securing the two screws, ensure the plenum is level.

Pressurization Module with
Plenum Installation, Operation
and Maintenance Manual
VoltAire Systems, LLC
Specifications are subject to change without notice
Page 9 of 20
VoltAire Doc. # DA0322A
Published: June 13, 2023
FIGURE 9: PLENUM ALIGNMENT SCREWS
5. After hanging the plenum, install the 8 provided self-tapping screws in the location shown in Figure 10.
FIGURE 10: PLENUM MOUNTING LOCATIONS
6. Using field-supplied sealant, apply a bead along the top seam (and side seams if possible) between the
Plenum and the Bard unit.
7. Install the Pressurization Module gasket kit utilizing Figure 11 as reference. The figure shows the gasket area.
Note that the 18-inch length runs across the top of the unit.
FIGURE 11: PRESSURIZATION MODULE MOUNTING SURFACE
MOUNTS TO PLENUM

Pressurization Module with
Plenum Installation, Operation
and Maintenance Manual
VoltAire Systems, LLC
Specifications are subject to change without notice
Page 10 of 20
VoltAire Doc. # DA0322A
Published: June 13, 2023
8. Install the Pressurization Module on the Plenum using the 6 provided screws in the shipped loose kit. The six
screw holes can be found on the mounting flanges the Pressurization Module as shown in Figure 12.
FIGURE 12: PRESSURIZATION MODULE SIDE VIEW
(OPPOSITE SIDE OF MOUNTING SURFACE)
9. Remove the top access panel from the pressurization module. (Refer to General Configuration and Airflow)
10. Using field-supplied sealant, apply a bead along the top and around the sides of the mounting bracket where
the Pressurization Module and the Plenum meet.
11. Using the field supplied electrical service with disconnect, pass through the Pressurization Module electrical
entries and land the wires at the terminal block, including a ground wire to the ground terminal, as shown in
Figure 13. Wire size may be #12 to #16 AWG, sized by installer per code, using the torque driver to provide
4.5 in-lb torque.
FIGURE 13: ELECTRICAL ENTRY LANDING
12. The Pressurization Module may come with a selection of features depending on the model number.
Determine which features are included with the unit by referring to the model number to the nomenclature
from Figure 1 on page 5. Then refer tothe respective wiring diagrams found on pages 14-18 in this manual
for further clarification.
For Pressurization Modules with an HVAC interlock, remove the factory jumper from the interlock relay and
provide 24VAC external power to the interlock contacts.
For Pressurization Modules with fire/smoke shutdown, remove the factory jumper from the shutdown terminal
block and replace with field supplied dry contacts.