Baltimore Aircoil Company Vertex VRC Series User manual

Vertex™
Evaporative Condenser
RIGGING & ASSEMBLY INSTRUCTIONS

Vertex™ Evaporative Condenser Rigging & Assembly Instructions – Forward Page | 2
Vertex™ Evaporative Condensers should be rigged and
assembled as outlined in this bulletin.
These procedures should be thoroughly reviewed prior to the actual
rigging and assembly of the equipment to acquaint all personnel
with procedures to be followed and to assure that all necessary
equipment will be available beforehand.
Be sure to have a copy of the submittal package
available for reference. If you do not have a copy of this
drawing,or if you need additional information about
this unit, contact your local BAC Representative
whose name and telephone number are on a label
adjacent to the access door. The model number and
serial number ofthe unit are also located in this area.

Vertex™ Evaporative Condenser Rigging & Assembly Instructions – Table of Contents Page | 3
Vertex™ Evaporative Condenser
RIGGING & ASSEMBLY INSTRUCTIONS
Contents
1. Introduction ................................................................................................................................................................................................... 4
Safety........................................................................................................................................................................................................... 4
Shipping ...................................................................................................................................................................................................... 4
Pre-Rigging Checks.................................................................................................................................................................................... 4
Unit Weights ........................................................................................................................................................................................... 5
Anchoring ............................................................................................................................................................................................... 5
Cold Weather Operation............................................................................................................................................................................. 5
Location....................................................................................................................................................................................................... 5
Warranties ................................................................................................................................................................................................... 5
Unit Operation............................................................................................................................................................................................. 5
2. Rigging & Assembly...................................................................................................................................................................................... 6
Rigging ........................................................................................................................................................................................................ 6
Section Assembly....................................................................................................................................................................................... 8
Wiring the Factory Terminal Box (EC Fan System Only) ........................................................................................................................ 9
Electrical Power Quality ........................................................................................................................................................................ 9
Power Connections................................................................................................................................................................................ 9
Controls Connections.......................................................................................................................................................................... 10
3. Optional Accessory Installation................................................................................................................................................................... 11
Bottom Water Outlet................................................................................................................................................................................. 11
Offset Access Platform, Perimeter Guardrail and Ladder .................................................................................................................... 12
Overview ............................................................................................................................................................................................... 12
Typical Installation............................................................................................................................................................................... 12
Offset Access Platform Assembly for 18’ Units ................................................................................................................................ 16
Gap Cover Plate Installation................................................................................................................................................................ 20
Ladder Safety Cage .................................................................................................................................................................................. 21
Automatic Bearing Greasers (Optional for BALTIDRIVE ® Power Train Units Only)......................................................................... 23
Heater Control Panel ................................................................................................................................................................................ 24

Vertex™ Evaporative Condenser Rigging & Assembly Instructions – Introduction Page | 4
1. Introduction
Safety
Adequate precautions appropriate for the installation and location of these products should be taken to safeguard the
equipment and the premises from damage, and the public from possible injury. The procedures listed in this manual must be
thoroughly reviewed prior to rigging and assembly. Read all warnings, cautions and notes.
When the fan speed of the unit is to be changed from the factory set speed, including the use of a variable speed device, steps
must be taken to avoid operating at or near the fan’s “critical speed” which could result in fan failure and possible injury or
damage. Refer to “Fan Control” in the Vertex™ Operation & Maintenance Manual on www.BaltimoreAircoil.com.
WARNING: In the event of extended lifts or where hazards exist, the lifting devices should be
used in conjunction with safety slings placed under the unit.
Shipping
BAC Vertex™ Evaporative Condensers are factory assembled to ensure uniform quality with minimum field assembly. As
standard, models ship in two sections per cell (lower and upper). Contact your local BAC Representative for more information.
For the dimensions and weights of a specific unit or section, refer to the submittal drawings.
WARNING: Only personnel qualified to do so should undertake the installation, operation,
maintenance, and repair of this equipment. Proper care, procedures, and tools must be used in
handling, lifting, installing, operating, maintaining, and repairing this equipment to prevent
personal injury and/or property damage.
Pre-Rigging Checks
When the unit is delivered to the jobsite, it should be checked thoroughly to ensure all required items have been received and
are free of any shipping damage prior to signing the bill of lading.
Sheaves, Belts, and Bearings
Cold Water Basin Accessories
Bearing Supports
Spray Water Pumps
Fan Motor(s)
Mating Surfaces Between Sections/Modules
Fan Guard(s)
Miscellaneous Items: All bolts, nuts, washers, and sealer tape required
to assemble sections or component parts are furnished by BAC and
shipped with the unit. A checklist inside the envelope marked“Customer
Information Packet” indicates what miscellaneous parts are included with
the shipment and where they are packed. This envelope will be attached
to the side ofthe unit or located in a box inside the unit.
Fan(s) and Fan Shaft(s)
Float Valve Assembly(s)
Water Distribution System
Coil Surface
Interior Surfaces
Interior Surfaces

Vertex™ Evaporative Condenser Rigging & Assembly Instructions – Introduction Page | 5
Unit Weights
Before rigging any unit, the weight of each section should be verified from the unit submittal drawing. Unit print weights include
the final assembled unit with all accessories. Accessory weights (found on the respective drawing) can be deducted from the
total weight.
Anchoring
Seven-eighths inch (7/8”) diameter holes are provided in the bottom flange of the basin section for bolting the unit to the support
beams. Refer to the suggested support drawing included in the submittal for location and quantity of the mounting holes. The
unit must be level for proper operation. Anchor bolts must be provided by others. The IBC rating is only certified with
standard anchorage locations. Using alternate anchorage locations or alternate steel supports will void any IBC wind or
seismic ratings. Contact your local BAC Representative for details.
WARNING: The unit must be properly anchored before operation begins.
Cold Weather Operation
These products must be protected by mechanical and operational methods against damage and/or reduced effectiveness
due to possible freeze-up. Refer to “Cold Weather Operation” in the Vertex™ Operation & Maintenance Manual on
www.BaltimoreAircoil.com or contact your local BAC Representative for recommended protection alternatives.
WARNING: Before an actual lift is undertaken, ensure no water, snow, ice, or debris has
collected in the basin or elsewhere in the unit. Such accumulations will add substantially to the
equipment’s lifting weight.
Location
All evaporative cooling equipment must be located to ensure an adequate supply of fresh air to the fans. When units are
located adjacent to walls or in enclosures, care must be taken to ensure the warm, saturated, discharge air is not deflected and
redirected back to the air intakes. Each unit must be located and positioned to prevent the introduction of discharge air into the
ventilation systems of the building on which the unit is located and of adjacent buildings. For detailed recommendations on BAC
equipment layout, see our website at www.BaltimoreAircoil.com or contact your local BAC Representative.
NOTICE: Each unit must be located and positioned to prevent the introduction of discharge air
into the ventilation systems of the building on which the unit is located and of adjacent buildings.
Warranties
Please refer to the Limitation of Warranties (located in the submittal package) applicable to and in effect at the time of the sale/
purchase of these products.
Unit Operation
www.BaltimoreAircoil.com.

Vertex™ Evaporative Condenser Rigging & Assembly Instructions - Rigging & Assembly
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2. Rigging & Assembly
Rigging
Refer to Table 1 for the recommended vertical dimension “H” from the lifting device to the spreader bar. In the event of extended
lifts or where hazards exist, the lifting devices should be used in conjunction with safety slings placed under the unit.
Most single cell Vertex™ Evaporative Condenser products are designed to be lifted in one assembled piece as shown in Figure 1.
Verify the total unit shipping wight is below 35,000 lbs. before performing a single-piece lift. A two-piece lift is shown in
Figure 2.
NOTES: For weight information, refer to the submittal drawing package. Any motors or accessories shipped in the cold water
basin must be removed prior to installing the upper (mechanical and coil casing) section.
WARNING: Single piece lift is ONLY possible when total unit shipping weight is under 35,000 lbs. Please refer
to the shipping weight shown on the Unit Print from submittal package. Single piece lifting must be done using
lifting ears on the base of the upper casing section (See Figure 1).
Model Number
Number
of Basin
Sections
Number of
Casing
Sections
Basin Section
Casing Section or Single
Piece Lift
Spreader Bar
Length (L)
Minimum
Height (H)
Center of
Gravity from
Air Inlet
Face
Spreader
Bar Length
(L)
Minimum
Height (H)
VRC-xxxxA-1012N-xx
1 1 10’ 13’-8” 4’-2” 10’ 9’-2”
VRC-xxxxA-1018N-xx 1 1 10’ 13’-8” 4’-2” 10’ 13’-8”
VRC-xxxxA-1024N-xx 2 2 10’ 13’-8” 4’-2” 10’ 9’-2”
VRC-xxxxA-2012N-xx 2 2 10’ 13’-8” 4’-2” 10’ 9’-2”
VRC-xxxxA-1036N-xx
2 2 10’ 13’-8” 4’-2” 10’ 13’-8”
VRC-xxxxA-2018N-xx 2 2 10’ 13’-8” 4’-2” 10’ 13’-8”
VRC-xxxxA-1212N-xx 1 1 12’ 13’-8” 5’ 12’ 9’-2”
VRC-xxxxA-1218N-xx
1
1
12’
13’-8”
5’
12’
13’-8”
VRC-xxxxA-1224N-xx 2 2 12’ 13’-8” 5’ 12’ 9’-2”
VRC-xxxxA-2412N-xx
2
2
12’
13’-8”
5’
12’
9’-2”
VRC-xxxxA-1236N-xx
2
2
12’
13’-8”
5’
12’
13’-8”
Table 1. Recommended Vertical Dimension and Spreader Bar Length

Vertex™ Evaporative Condenser Rigging & Assembly Instructions - Rigging & Assembly
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Figure 1. Single-Piece Lift
Rigging of Upper Coil Section
Rigging of Lower Fan Section
Center of Gravity
Figure 2. Two-Piece Lift
H
H
H
L
L
L

Vertex™ Evaporative Condenser Rigging & Assembly Instructions - Rigging & Assembly
Page | 8
Section Assembly
1. Remove any motors or accessories shipped in the cold water basin. Rig the basin section. The rigging hook must be placed
above the section’s center of gravity as detailed in Figure 1and Figure 2.
2. Wipe down the flanges with acetone to remove dirt or moisture which may have accumulated during shipment and storage.
3. Install sealer tape on the mating flange of the bottom section to ensure an airtight seal between the top and bottom section.
Install flat butyl sealer tape (BAC part #554000) supplied with the unit, on the mating flanges of the lower section in a
continuous line. At each corner, allow 1” overlap. See Figure 3.
Figure 3. Sealer Tape Application
4. Lower the flexible connection on the pump discharge piping below the elevation of the lower section before rigging the coil
casing section.
5. Lower the upper section (coil casing and mechanical) until it is hovering 2-6” above the lower section.
6. Insert drift pins per Figure 4. Start at the corner hole and skip every 3 or 4 holes along the length of the unit, inserting drift pins
to align the coil casing section and the lower section holes. Repeat this process on the other side.
Figure 4. Section Alignment Using Drift Pins

Vertex™ Evaporative Condenser Rigging & Assembly Instructions - Rigging & Assembly
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7. Fasten the hardware between the coil casing and lower section per Figure 5. Lower the coil casing section the rest of the
way onto the lower section, keeping mounting holes aligned.
Figure 5. Fastening of Upper and Lower Sections
8. Secure the hose connecting the sections of the pump discharge pipe with the hose clamps provided.
9. On units with more than one casing, install the remaining casings using the same procedure as the first. When installing two or
more casings, on the basin section, sealer tape must be applied to both cross flanges (see Figure 3).
10. On units operating with a remote sump tank, install a bleed line with valve between the system circulating pump discharge riser
and a convenient drain. Locate the bleed line in a portion of the riser piping that drains when the pump is off. Units that are
furnished with a factory-installed circulating pump include a bleed line with valve.
Wiring the Factory Terminal Box (EC Fan System Only)
Electrical Power Quality
This unit requires clean electrical power to operate properly. Voltage and frequency should be within 10% of the designed voltage
for the unit. Failure to provide this power may damage the unit. The EC fan motors contain built-in protection circuits that will shut
down the fan if there is a power quality issue. If the fans go into protection mode, the unit must be shut down and restarted to
return to normal operation.
Power Connections
The Vertex™ Condenser requires a 3 phase 60Hz power source (50Hz also available). The voltages available are 200 to 240V
and 380V to 480V. Please ensure that the correct voltage is supplied to the unit. If unsure, check your unit’s submittal to verify
that the provided power matches your unit. On the factory terminal box, remove the NEMA plug located on the side of the panel
near the disconnect switch. This will maintain the panel’s NEMA 4 rating and prevent water ingression to the unit.
CAUTION: Before proceeding, bolt the basin sections securely to the supporting steel.

Vertex™ Evaporative Condenser Rigging & Assembly Instructions - Rigging & Assembly
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Controls Connections
The controls wiring should be provided in a separate conduit from any power wiring. BAC recommends penetrating the control
panel from the bottom or side panel observing standards. It is also recommended to use shielded wire to avoid interference.
To control the Vertex™ Evaporative Condenser fan speed, a control signal of 4-20mA is used. The signal commands the fans off
at 4mA and full speed at 20mA. The 4-20mA should be wired as outlined in the wiring diagram in the submittal package. Control
wiring can be routed into the terminal box through the NEMA plug located on the bottom of the panel.
WARNING: When connecting power to the unit, do not penetrate the top of the control panel. Doing so may
allow moisture to enter the panel. All cable and conduit should be supported separately from the unit. Do not
penetrate the unit for supports or other connections.
NOTE: Any motors or accessories shipped in the water basin must be removed prior to installing the upper (mechanical and coil
casing) section.
Terminal Box
Figure 6. Terminal Box Location
Figure 7. Terminal Box

Vertex™ Evaporative Condenser Rigging & Assembly Instructions – Optional Accessory Installation Page | 11
3. Optional Accessory Installation
Bottom Water Outlet
1. The bottom connection seal, Figure 8, is typical for all bottom remote sump outlets. Flange mounting hardware and gasket to
be supplied by others.
2. Bottom connection seal kit(s) ship in plastic tubs.
Figure 8. Bottom Water Outlet

Vertex™ Evaporative Condenser Rigging & Assembly Instructions – Optional Accessory Installation Page | 12
Offset Access Platform, Perimeter Guardrail and Ladder
Overview
External access platforms, perimeter handrails, ladders and ladder safety cages ship loose for field assembly and installation.
Assembly and installation means and methods is dependent on the external access configuration selected. Please refer to the
equipment submittal package for the selected external access configuration.
Typical Installation
1. Lift the platform by fastening the lifting device to the top guard rail so it does not slide while lifting. Lift the platform so that the
support gussets align with the mounting brackets on the unit. See Figure 9.
2. Fasten the platform gussets to the mounting brackets using the supplied hardware as shown in Figure 9.
3. Loosely fasten the lower and intermediate appropriate ladder brackets and diagonal braces to the factory installed ladder
brackets as shown in Figure 11 and Figure 12. Check your submittal for the ladder orientation ordered.
NOTE: For platform and ladder options ordered but not listed, refer to the customer information packet supplied on the unit.
Factory Installed
Platform Bracket
FAR
Typ. Hardware 3/8”x1” Bolt,
Flatwasher, Lockwasher, Nut
Figure 9. Typical Offset Platform Installation
FAR
FAS
Figure 10. Support Gusset (FAR) to Platform Frame

Vertex™ Evaporative Condenser Rigging & Assembly Instructions – Optional Accessory Installation Page | 13
Figure 11. Typ. Ladder & Bracket Installation
Figure 12. Typ. End Ladder & Bracket Installation

Vertex™ Evaporative Condenser Rigging & Assembly Instructions – Optional Accessory Installation Page | 14
4. If the ladder shipped in two sections assemble ladder sections together using supplied hardware. The shorter ladder
section will be installed towards the top of the unit. See Figure 13.
NOTE: For platform and ladder options ordered but not listed, refer to the customer information packet supplied on
the unit.
Figure 13. Ladder Splice
5. Attach the ladder to the platform and fasten the lower and intermediate brackets to the ladder side rails as shown in
Figure 11 and Figure 12.
6. Tighten all ladder bracket fasteners.
7. Cut the ladder to length required and fasten the ladder foot to the landing surface (anchorage hardware provided by
others).
8. Using the supplied hardware, install the perimeter handrails at the bracket points as shown in Figure 14.
NOTE: Rail corner connections require a Corner Vertical Rail Post. See Figure 14 Detail B.
9. At the point where two vertical support meet, install the factory supplied fastener through each support as shown in
Figure 14 Detail C.

Vertex™ Evaporative Condenser Rigging & Assembly Instructions – Optional Accessory Installation Page | 15
Corner Vertical Rail Post
Detail A – Post Bracket Connection
Qty. (2) 3/8” bolt, flatwashers, lockwasher,
nut
Detail D – Toeboard Installation
5/16” Tappers
Detail C – Rail to Rail Connection
Qty. (1) 5/16” bolt, flatwashers,
lockwasher, nut
Detail B – Rail Corner Connection
Upper: Qty. (4) 5/16” bolt, flatwashers, lockwasher
, nut
Lower: Qty. (4) 3/8” bolt, flatwashers, lockwashe
r, nut
Detail E – Vertical Railing Bracket Connection
Qty. (
7) 3/8” bolt, flatwashers, lockwasher, nut
Railing Vertical Bracket (HRE)
Railing Corner
Bracket (PAC)
Figure 14. Typical Handrail Installation

Vertex™ Evaporative Condenser Rigging & Assembly Instructions – Optional Accessory Installation Page | 16
Figure 15. Two Platform Sections
Offset Access Platform Assembly for 18’ Units
1. Platforms for 18’ spans may ship in two sections, each roughly 10 ft in length, which should be joined prior to lifting and
installing on the unit.
2. Unbolt the splice plates from both sides of the platform, but DO NOT remove the plates from the support beam channel.
Slide the loose plates to the locations shown in Figure 15, Detail A and B.
NOTE: For platform and ladder options ordered but not listed, refer to the customer information packet supplied on the
unit.
Detail A: (Support beam shown opaque for clarity)
Detail B: (Support beam shown opaque for clarity)

Vertex™ Evaporative Condenser Rigging & Assembly Instructions – Optional Accessory Installation Page | 17
Figure 16. Platform Assembly Offset
3. Begin joining the platform sections by offsetting the sections from each other as shown in Figure 16.
4. Slide the platforms until the crossmember cutout is aligned with the crossmember of the second section. Then slide the
two sections together until the support beams are aligned, and the crossmember is seated into the cutout. See Figure
17.
5. Slide the two splice plates into mounting positions. Secure with provided hardware. See Figure 18, Figure 19 and
Figure 20.
Figure 17. Platform Assembly Alignment
Figure 18. Move splice plates into positions shown

Vertex™ Evaporative Condenser Rigging & Assembly Instructions – Optional Accessory Installation Page | 18
6. Secure crossbeam on inside of platform with provided hardware.
Figure 20. Outside beam splice plate mounting fastener locations
Figure 19. Inside beam splice plate and crossbeam mounting fastener locations

Vertex™ Evaporative Condenser Rigging & Assembly Instructions – Optional Accessory Installation Page | 19
7. Follow all steps in Section “Typical Installation”.
8. Install A-frame handrail section and toeboard. See Figure 14 and Figure 21.
Figure 21. Platform and A-Frame Handrail Section Installation
Detail B – Fastening A-Frame Handrail Section
Detail A – Field Installed A-Frame Handrail Section

Vertex™ Evaporative Condenser Rigging & Assembly Instructions – Optional Accessory Installation Page | 20
Gap Cover Plate Installation
1. After platform installation is complete secure platform gap cover plates (PCC) to platform base using 5/16” tappers and
1/4” x 2” self-tapping screws provided. Secure coil casing section gap cover plate (FAT) to coil casing section using 1/4” x
2” self-tapping screws provided. See Figure 22.
FAT
Figure 22. Gap Cover Plate Location & Installation
(model
details hidden for clarity)
Detail A – Platform Gap Cover Plate
Detail B – Coil Casing
Gap Cover Plate