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1 Safety Considerations
Hazards may exist within this equipment because it
contains electrical and powerful moving components.
Only qualified service personnel should install or
service this equipment. Untrained personnel can
perform basic maintenance such as maintaining filters.
Observe precautions marked in literature and on labels
attached to the unit. Follow all safety codes.
2 General Specifications
These ceiling series are a successful solution to
ventilation and indoor air quality problems. Intended for
installation within a suspended ceiling space or
mechanical room, these ventilators provide 100%
outdoor air ventilation.This series consists of commercial
interior heat and energy recovery ventilators.
HRV 20LCi
This ventilator tranfers the heat from the exhaust
airstream to the supply airstream. The Heat Recovery
Ventilator (HRV) uses a flat plate heat exchanger which
may be more suited to some applications requiring
stringent cross contamination control.
ERV w20LCi
This ventilator provides energy recovery between
the exhaust and supply airstreams. The Energy
Recovery Ventilator (ERV) uses an enthalpy wheel for
total energy recovery providing superior efficiency in
hot and humid climates.
Both models are also effective in cold climates and
use various types of frost control or defrost to ensure
operation when outside temperatures are extremely
low.
See Appendix A for more detailed equipment data.
3 Installation
3.1 Check Equipment
Move the unit to its installation location and remove
packaging. See Appendix A for unit weight and
specifications.
Remove all internal packaging (ERV w20LCi only)
Remove access panels and remove all packaging
from the unit. Note that there is packaging for the wheel
support during shipping. Removal of all this packaging
is critical.
Inspection
Inspect the equipment, exterior and interior, for
damage. Ensure that there is no damage to the internal
components such as fans, motors, dampers, flat plate
heat exchangers or enthalpy wheel, insulation, drains
(if applicable) and structures. File a claim with the shipping
company if the unit is damaged.
System Requirements
Consult National Electrical Code and local building
codes for special installation requirements. Note
additional requirements in Appendix A and in the Start-Up
Section (page 7). Also, see Appendix C for more
electrical data information.
The unit should be installed to allow easy access
for maintenance. Appendix D and E show minimum
clearance requirements between front access and any
obstruction to allow for removal of components (fans,
filters, flat plate heat exchangers or enthalpy wheel).
The front of the unit is defined in relation to the inlet
ports and outlet ports on the unit. Port location and
overall dimensions shown in Appendix D and E.
In cold climates with -5°F (-20°C) design, the unit
must be mounted in a dry area (not exceeding 30% RH)
to avoid water condensation on the cabinet during winter
operation. Alternatively, accommodation must be made
for condensation on the cabinet exterior. Heat recovery
model (20LCi) should be mounted in a heated space to
prevent drain lines from freezing. Do not mount units in
an area where exposure to hot chimneys, electrical
panels or other hazards will occur.
A mounting location close to an exterior partition will
minimize the length of insulated ductwork required.
Appendix B illustrates ductwork through exterior partitions.
These should be separated by a minimum of 8 feet
(2438mm) to avoid outside cross contamination.
WARNING
Disconnect main power switches to unit before
performing service or maintenance. Electric shock
can cause personal injury or death.
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