Inspection on Arrival
Inspect the equipment exterior and interior for any dam-
age on arrival that may have occurred during unit ship-
ment and for shipped loose parts. Ensure that there is
no damage to any protruding exterior components such
as door handles, disconnect switch handle, etc., or to
internal components such as fans, motors, dampers, en-
thalpy wheel and structures. File a claim with the shipping
company if the unit is damaged. Check the packing slip
against all items received. If any items are missing, sign
the carrier’s bill of lading with the notation “Shipment Re-
ceived Less Item #___”. Contact the factory immediately
if damage is found. No return shipment will be accepted
without authorization.
Installation
Unit Location Requirements
Consult local building codes and electrical codes for spe-
cial installation requirements and note additional require-
ments listed in this manual. In choosing the installation
location of the unit, consider the following factors:
• The unit should be installed to allow easy access for
maintenance and for systems operation. See the ser-
vice clearance dimensions in
• When possible, mount the unit over an unused area
such as a hallway. Although fans and motors are
mounted on vibration isolators or are dynamically
balanced, the unit will be even less perceptible if po-
sitioned away from busy offices.
• Locate the unit in an area requiring the least amount
of ductwork and direction changes to allow optimum
performance, to reduce pressure loss and to use
less electricity to achieve proper ventilation. Duct-
work must be in accordance with ducting mechani-
cal rules to prevent sound issues and system effects.
• The fresh air intake hood must be positioned away
from sources of contamination such as hot chimneys
or kitchen exhaust vents.
• Fresh air intake must also be positioned in a direction
opposite to that of prevailing winds to reduce entry
of snow or rain.
• The unit should be mounted on a level foundation to
allow condensation to flow into internal drains. The
foundation must provide adequate continuous sup-
port to minimize deflection of the unit base frame to
not more than 1/16” [1.6 mm] over entire length. In
addition to these recommendations, a Structural En-
gineer must be involved to properly size supporting
structural elements.
• When mounting the unit indoors, if drain connections
are required, mount the unit on a housekeeping pad
of sufficient height to allow for drain trap height and
condensate lines to slope toward the building drain.
• When mounting the unit on a roofcurb check the
height from the finished roof to the bottom of the
intake hood. Consult with Local Authorities or your
building code for minimal intake hood height for the
water-tight height from and above the finished roof
and, in snow prone areas the buildup of snow, to
determine the height of the roofcurb. Venmar CES
optional roofcurbs measure 18” [457 mm] in height.
If additional height is required from the finished roof
to the top of the roofcurb, to the bottom of the intake
hood or if other than level, custom height roofcurbs
must be ordered.
Unit Application Limitations
Using Venmar CES units for temporary ventilation dur-
ing construction is subject to the unit warranty terms and
should be reviewed carefully before proceeding, as this
may void the standard warranty conditions.
Fine dust, larger particulate matter, solvents, varnishes
and other chemicals may cause filter clogging and el-
evated cabinet pressures, higher power consumption and
possible irreparable damage to the desiccant material of
the enthalpy wheel, which could reduce energy recovery
performance of the wheel and also reduce the heat trans-
fer effectiveness of other components. Potential damages
include, but are not limited to, these examples.
IMPORTANT
The hoods for these units are not installed from the fac-
tory for shipping purposes and must be installed on site.
They should be installed after the unit is installed. Hoods
are shipped on top of the unit. See
section.
WARNING
Venmar CES equipment is not designed to be used for
temporary heating, cooling and/or ventilation during
construction.
VCES-VHC-IOM-1F – VHC-36, -42 & -50
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