5
Vektor ERS-MD Energy Recovery Plenum Laboratory Exhaust
Plenum Service Clearances and
Access Locations
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
removal may be greater than the service clearances.
Refer to page 12 for coil clearances.
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
on page 7). Do not make opening larger than
necessary. Be sure to allow for the recommended
service clearances.
3 . Install roof curbs
Locate curb over roof opening. Check that the
diagonal dimensions are within ±1⁄8 inch of each
other and adjust as necessary. Shim as required
to level. Secure curb to roof deck. Attach
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.
8 ROW COIL
193.8"
EXTERNAL
PIPING BY OTHERS
SERVICE DOOR
155"
INTAKE OPENING
NEMA 3R DISCONNECT
INSPECTION PANEL
1" DRAIN
(PER FAN)
VK-MD-33 (QTY. 2)
ROOF CURB
1.5" DRAIN
BOTH SIDES
.75" DRAIN
LIFT LUG
(QTY. 8)
S
S
S
S
S
S
38"
126.5"
ISOLATION DAMPER
SIDE INLET
Coil
Coil
Optional
External
Piping
(by others)
Service Doors
Internal Pipe
Chase
Side or Bottom Intake Opening
Lift
Bracket
Optional
Internal
Piping
(by others)
under
Vektor fans
Bypass
Weatherhood(s)
Vektor bypass
air plenum
optional mounting
locations shown
Filters
Coil
Single and Dual Coil Removal Clearances
Coil
Coil
Service Doors
Coil Service
Clearance
Coil Service
Clearance
WEIGHTS (LBS)
CURB
600
FAN (QTY. 2)
4580
FAN BAP
2750
ERS PLENUM
3700
TOTAL
11630
Clearance
Clearance
Used on page 5 of Part #474118 - need to copy, and edit this same drawing for use on backcover of same Instruction.
Used on backcover of Part #474118
NOTE
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.
NOTE
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.
Roof Curb
ERS
Plenum
Cabinet
Pre-installed
gasket material
ERS Plenum Cabinet
Installed on Roof Curb
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
Roof curbs are Model VK-ERS, which are shipped
knocked down and require field assembly (by
others). Assembly instructions are included with
the roof curb.
Anchor curb to roof deck structure in accordance
with project construction documents.
Curb section
for ERS plenum
cabinet
Curb section
for Vektor fan
bypass air
plenum
Gasketing material
(supplied) to be
attached to top edge
of
all
curb sections
Assembly of Roof Curbs and ERS Plenum
Cabinet to the Bypass Air Plenum (BAP)
