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Plenum Service Clearances and
Access Locations
Clearance
ERS plenum cabinet and Vektor fan bypass air plenum
(BAP) require minimum clearances for access on three
sides for routine maintenance. Filter replacement,
drain pan inspection and cleaning, coil inspection,
damper actuator adjustments and inspection, fan
bearing lubrication and belt adjustment (belt drive
units), are examples of routine maintenance that must
be performed. Coil and filter sections are always
provided with a service door or panel for proper
component access. Clearances for component
Used on page 5 of Part #474118 - need to copy, and edit this same drawing for use on backcover of same Instruction.
removal may be greater than the service clearances.
Refer to page 12 for coil clearances.
Lift
Bracket
Optional
External
Piping
(by others)
Optional
Internal
Piping
(by others)
under
Vektor fans
Assembly of Roof Curbs and ERS Plenum
Cabinet to the Bypass Air Plenum (BAP)
Used on backcover of Part #474118
Rooftop units require curbs to be mounted first. The
duct connections must be located so they will be clear
of structural members of the building.
1 .
Assemble factory supplied roof curbs
Service Doors
Roof curbs are Model VK-ERS, which are shipped
knocked down and require field assembly (by
Coil Service
Clearance
others). Assembly instructions are included with
the roof curb.
Curb section
for Vektor fan
bypass air
plenum
Anchor curb to roof deck structure in accordance
with project construction documents.
Coil
Side or Bottom Intake Opening
Coil
Coil
Coil
Coil
Gasketing material
(supplied) to be
attached to top edge
of all curb sections
Curb section
for ERS plenum
cabinet
Clearance
Gasketing material (shipped with Vektor fan) should
be placed on the top edge of secured roof curb
prior to placing the ERS plenum cabinet and Vektor
bypass air plenum on the curb.
If fan bypass air plenum (BAP) is in sections, these
should be assembled first, prior to connection to
ERS plenum cabinet. Refer to Vektor Fan IOM (part
number 464652) on how to assemble the fan BAP.
Determine the placement of the plenum sections
relative to each other. Please refer to the submittal
drawing for the orientation of any bypass air plenum
(BAP) dampers or air inlet locations.
Filters
2 .
Cut roof opening and locate curb
Layout the unit roof openings such that exhaust
inlet of the unit will line up with the corresponding
ductwork (refer to Recommended Roof Openings
Service Doors
on page 7). Do not make opening larger than
necessary. Be sure to allow for the recommended
Internal Pipe
Chase
service clearances.
3 .
Install roof curbs
Bypass
Locate curb over roof opening. Check that the
Weatherhood(s)
diagonal dimensions are within ±1⁄8 inch of each
Vektor bypass
air plenum
other and adjust as necessary. Shim as required
optional mounting
to level. Secure curb to roof deck. Attach
locations shown
supplied gasketing to top of curb.
4 .
Set the ERS plenum cabinet
Lift ERS plenum cabinet to a point directly above
the curb and duct openings. While lowering,
guide cabinet to align with duct opening. Roof
curbs fit inside the unit base. Set ERS plenum
cabinet into place on assembled VK-ERS roof
curb. Allow gasketing on curb to compress before
setting the fan bypass air plenum. Make sure the
unit is properly seated on the curb and is level.
Coil Service
Clearance
Vektor ERS-MD Energy Recovery Plenum Laboratory Exhaust
NOTE
LIFT LUG
(QTY. 8)
EXTERNAL
PIPING BY OTHERS
NOTE
ISOLATION DAMPER
ERS
Plenum
Cabinet
Roof Curb
ERS Plenum Cabinet
Installed on Roof Curb
INTAKE OPENING
8 ROW COIL
S
S
.75" DRAIN
Pre-installed
gasket material
5
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