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Model PVe Heat Recovery Unit
Table of Contents
Basic Operation . . . . . . . . . . . . . . 3
Installation
Supplemental Installation, Operation and
Maintenance Manuals . . . . . . . . . . . 3
Installation . . . . . . . . . . . . . . . . 3
Installation Stages . . . . . . . . . . . . . 4
Lifting with a Crane or Forklift . . . . . . . . 4
Roof Curb and Rail Mounting
Recommended Roof Opening . . . . . . . . 4
Service Clearances . . . . . . . . . . . . 5
Roof Curb Mounting . . . . . . . . . . . . 6
Curb Dimensions and Weights . . . . . . . . 6
Ductwork Connections . . . . . . . . . . . 6
Rail Mounting / Layout . . . . . . . . . . . 7
Access Panel Description and Location . . . 7
Dimensional Data . . . . . . . . . . . . . 8
Drain Trap . . . . . . . . . . . . . . . 8
Electrical Information
General Electrical Information . . . . . . . . 9
Control Center Components . . . . . . . . . 10
Electric Heater Application/Operation . . . . . 10
Optional Accessories
Frost Control Application/Operation . . . . . 11
Economizer Application/Operation . . . . . . 11
Variable Frequency Drives and Wiring . . . . 12-13
Typical Wiring Diagram . . . . . . . . . . . 14
Sensors and Lights . . . . . . . . . . . . 15
Remote Control Panel and Wiring . . . . . . 16
Sensors Mounted by Factory . . . . . . . . 17
Sequence of Operation
Start-Up
General Start-Up Information . . . . . . . . 18
Optional Accessories . . . . . . . . . . . 19
Unit Start-Up, Fans . . . . . . . . . . 20-21
Routine Maintenance Checklist
Overview. . . . . . . . . . . . . . . . . 22
General . . . . . . . . . . . . . . . . . 23
Fan Belts. . . . . . . . . . . . . . . . . 23
Fan Motors . . . . . . . . . . . . . . . . 23
Fan Wheel and Fasteners . . . . . . . . . . 24
Fan Bearings . . . . . . . . . . . . . . . 24
Filters . . . . . . . . . . . . . . . . . . 24
Door Seal Maintenance . . . . . . . . . . . 24
Parts List . . . . . . . . . . . . . . . . . 25
Sequence of Operation . . . . . . . . . . . 25
Troubleshooting – Airflow. . . . . . . . . . 26
Troubleshooting – Unit . . . . . . . . . .27-28
Maintenance Log . . . . . . . . . . . 29-31
Warranty . . . . . . . . . . . . . Backcover
Basic Operation
The PVe brings in fresh outdoor air and removes stale
exhaust air from the building. Prior to discharging
the exhaust air, the plate heat exchanger transfers
energy from the exhaust air to the incoming outdoor
air. When used in the cooling mode, heat energy is
transferred from incoming outdoor air to the exhaust
air. Simply put, this unit preconditions the outdoor air
to save money on heating and cooling costs.
Installation
The system design and installation should follow
accepted industry practice, such as described in the
ASHRAE Handbook.
Adequate space should be left around the unit for
filter replacement and maintenance. Sufficient space
should be provided on the side of the unit for routine
service and component removal should that become
necessary.
See Service Clearances and Access Panel Description
sections for more details.
Supplemental Installation,
Operation and Maintenance
Manuals
Refer to the following Installation, Operation and
Maintenance Manuals for additional details:
Part #462844 — Exhaust Weatherhood
Additional manuals are available for each accessory
used in the PVe. These additional manuals are
provided by the respective manufacturers and are
included with unit shipment.
WARNING
All factory provided hoisting and fork lifting points
must be used when lifting the unit. When rigging for
hoisting with a crane, spreader bars must be used.
Failure to comply with this safety precaution could
result in property damage, serious injury or death.
See Installation Stages for additional details.
Plate
Heat
Exchanger
Cooling
Coil
Heating
Coil
RELIEF AIR
RESTROOM
EXHAUST AIR
SUPPLY AIR
OUTDOOR AIR UNIT (OA unit)
WITH HEAT RECOVERY
AIR HANDLING
UNIT (AHU)
72°F 50% 72°F 50%
ZONE 1 ZONE 2
OUTDOOR
AIR
Exhaust
Fan
AHU
Cooling
Coil
Heating
Coil
RETURN DUCT
OUTDOOR
AIR
SUPPLY DUCT
SIDE VIEW