Price Price RegenCore Series User manual

MANUAL – INSTALLATION
PRC
Price RegenCore Series
Revision: v001 –Issue Date: 10/08/19
© 2019 Price Industries Limited. All rights reserved.

PRC
TABLE OF CONTENTS
Price Industries Limited
404 Egesz Street
Winnipeg, MB R2R 1X5
115 Turnbull Court
Cambridge, ON N1T 1C6
MANUFACTURED BY
WARNING
FIRE OR EXPLOSION HAZARD
Failure to follow safety warning exactly could result in
serious injury, death or property damage.
Be sure to read and understand the installation, operation
and service instructions in this manual.
Improper installation, adjustment alteration, service or
maintenance can cause serious injury, death or property
damage.
NOTE: This document is customer property and must be
retained by the unit’s owner for use by maintenance personnel.
Overview
Description.................................................................... 1
General Safety Information ............................................ 1
Submittal Documents.................................................... 1
Unit Nameplate ............................................................. 1
Unit inspection .............................................................. 1
Storage ......................................................................... 1
Installation Instructions
Mechanical Instalation ................................................... 2
Location................................................................. 2
Clearances............................................................. 2
Roof Curb or Base ................................................. 2
Rigging .................................................................. 2
Assembly ............................................................... 4
Core Installation ..................................................... 4
Duct Connections .................................................. 5
Blower or Fan ........................................................ 5
Final Assembly ....................................................... 5
Electrical Installation ...................................................... 6
Main Power Connection......................................... 7
Auxiliary Power Connections .................................. 7
Control Installation.................................................. 7
Control Connections .............................................. 7
Hot and Chilled Water Coils....................................7
Cooling Device Condensate Traps.......................... 8
Draw Through Trap Sizing ...................................... 8
Blow Through Trap Sizing.......................................8
Wash Down Drains.................................................8
Maintenance
Maintenance ............................................................... 10
Filters ................................................................... 10
Fan and Motor Assembly ..................................... 10
Coil Winterization ................................................. 10
Service and Warranty Procedure .......................... 10
Maintenance Checklist ......................................... 11
Start-up
Start-up instructions.................................................... 12
Pre-Start-Up ........................................................ 12
Fan Start-up......................................................... 12
Sheave Alignment and Belt Tension...................... 13
Belt Tensioning..................................................... 13
Typical Unit Airflow Diagram ................................. 13
Typical Unit Sequence of Operation...................... 14
Typical Control Point List ...................................... 15
Limited Warranty ......................................................... 16

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PRC
Overview
Description
Price RegenCore (PRC) is an alternating mass-exchanger
energy recovery unit which recovers energy in the heating and
cooling seasons. These units are precisely sized and built to
match each unique installation.
General Safety Information
This manual provides information on installation, start-up and
maintenance for the PRC. Improper installation can lead to
unsatisfactory operation or dangerous situations. This unit
should only be installed and maintained by qualified personnel.
Installers and service personnel should have a clear
understanding of the contents of this manual and the submittal
documents prior to installation. Improper installation may
lead to electric shock, possible injury from contact with
moving parts and/or possible burns from contact with heating
components. Additional safety concerns can arise from
unit location such as a roof or inclement weather (outdoor
installations). Additional safety precautions may be required.
Installers shall follow all codes and regulation of authorities
having jurisdiction, including if applicable, but not limited to:
The Local Building code; the National Electrical Code (NEC);
the Canadian Electrical Code (CEC) the National Fire Protection
Association (NFPA); and, OSHA.
The appliance must be electrically grounded in accordance
with local codes or, in the absence of local codes, with the
National Electrical Code, ANSI/NFPA 70, and/or the Canadian
Electrical Code, CSA C22.1, if an external electrical source
is utilized. The appliance installation shall conform to local
building codes.
Submittal Documents
Detailed submittals are available for this and all related units.
These submittals contain pertinent information required to
properly install the equipment. Please review them thoroughly
before commencing the installation.
Unit Nameplate
Figure 1 shows a typical nameplate which can be found on a
PRC unit. The nameplate is generally located in the electrical
and damper linkage service panel. The nameplate includes
model number, serial number, electrical characteristics and
other pertinent data.
Unit inspection
This unit has been inspected and test-run prior to shipment to
make sure the unit is free from defects from the manufacturer.
It is possible that damage may occur during shipping, rigging
and installation.
Upon receiving the unit, check that all items have been
delivered by comparing the Bill of Lading to the equipment
received. If anything is missing or damaged, notify the carrier
immediately. The carrier should note this on the packing slip or
other form of documentation and provide a copy.
NOTE: Photograph of any possible damage for record purposes.
Check the unit model number, heater size and electrical characteristics
to make sure they are correct. If there are any issues, do not
proceed with the installation. Contact your sales representative.
Storage
If the unit is to be stored, take precautions to prevent condensate
from forming inside the unit’s electrical compartments. Make sure
the equipment is protected from weather and dust from site
conditions by temporarily sealing all openings to the air tunnel
for outdoor units and completely covering indoor units. Price
Industries will not assume any responsibility for equipment
damage resulting from condensate accumulation on the unit’s
electrical and/or mechanical components.
FIGURE 1 – TYPICAL NAMEPLATE
WARNING
The manufacturer’s warranty does not cover any damage
or defect caused by modifications to the unit including
unauthorized attachments of other components. Such
activity may lead to unsatisfactory performance and may
endanger life and property.

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PRC
INSTALLATION INSTRUCTIONS
Mechanical Installation
Location
Price PRC units are specifically designed to suit each
installation, please refer to the submittal documents and
nameplate for installation location information.
The unit must be located in an area that is accessible and
free from both outdoor and building pollution sources.
Careful attention should be made to avoid placing units near
chimneys, exhaust stacks, plumbing vents or appliance
vents. In addition, care should be taken to avoid mounting the
unit near building elements that would cause an excessive
accumulation of snow on and around the unit.
The unit is suitable for use in aircraft hangars, parking
structures and repair garages when marked and installed, as
applicable, in accordance with:
Standard for Airport Hangars, ANSI/NFPA 409 Standard for
Parking Structures, ANSI/NFPA 88A Standard for Repair
Garages, ANSI/NFPA 88B.
Clearances
The PRC unit is designed to be field-serviceable, which
includes the energy recovery cores, coils, filters, fan/motor,
damper linkages, and electronics. Refer to the submittal
engineering drawings for the locations of access panels and
safety/service areas, and ensure there is sufficient clearance for
safety, inspection, and service.
Particular care should be made to ensure the core
intakes/exhaust have sufficient space to ensure a smooth
uninterrupted airflow (refer to the submittal drawings for
details).
Roof Curb or Base
Price PRC units can be installed on a concrete housekeeping
pad, sleeper, or a roof curb. The entire perimeter base and
frame structure must be supported with either field-supplied
sleeper or structural steel. Make sure that the support structure
has the correct dimensions and that it is square and level.
NOTE Continuous Structural Support Requirement: The unit
is designed to have continuous structural support around
its entire perimeter. Failure to provide continuous structural
support will damage the unit and void the warranty.
The support curb and any required ductwork (connecting to
the base of the unit) should be installed prior to installing the
unit. Once the curb is correctly dimensioned, level, and square,
roofing can be completed in accordance with accepted roofing
practices. Refer to Figure 2 for curb installation detail.
NOTE: To minimize sound transmission, only cut openings in
roof deck for ductwork penetrations. Do not cut out the entire
roof deck within in the curb perimeter.
Gasketing or other forms of sealant must be used around the
curb perimeter and at the duct connections. When the curb
is supplied by Price Industries, a neoprene gasket is included.
Prior to the installation of the unit, secure the gasket to the
mating surface of the curb by peeling the backing off the
gasket material and applying adhesive-side down.
If the unit is elevated, a field constructed cat walk around the
unit is strongly recommended to provide access for service
Rigging
NOTE: All PRC units are designed to be lifted from the base.
Each section of the unit is provided with lifting points at each
corner and sometimes at intermediate points.
FIGURE 2 – CURB INSTALLATION DETAIL
WARNING
HEAVY COMPONENTS
Use properly-sized cables, chains, or slings only as
shown. Each cable, chain, or sling must be capable of
supporting the weight of the entire unit or component.
Adjust cable, chain, or sling length for an even lift. Other
lifting arrangements may damage unit or component.
Failure to properly lift unit or component may result in
death or serious injury.

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PRC
INSTALLATION INSTRUCTIONS
If the PRC unit comes shipped in sections, each section is to
be lifted separately unless otherwise noted. DO NOT lift any
section with cores installed. All sections are to be lifted in
their vertical orientation.
PRC units can be shipped with or without a structural steel
base frame. If the PRC unit comes mounted on a base frame,
lift using all available lifting points. If the PRC unit does not
come mounted on a base frame, lift using soft straps slung
under the lower frame.
The following rigging method should be used when the PRC
comes mounted on a base frame:
1. Before lifting, check the unit weight to ensure that hoisting
equipment is adequate size. Locate the lifting lugs as
marked or shown on the unit drawing, and as illustrated in
Figure 3.
2. Spreader bars must be used when lifting the equipment.
Care must be taken to ensure that the lifting cables do not
damage the unit casing during the lifting operation.
3. If the unit is to be lifted by forklift or other lifting devices,
make sure that lifting forces are exerted on the perimeter
base frame NOT the floor of the unit. Lift all components
to the installation site separately to avoid damage.
4. Equipment must be lifted simultaneously by all lifting points
to distribute the load properly. When multiple lifting points
are furnished, they are to share the weight evenly via
spreader bar(s), as illustrated in Figure 4.
5. Test lift the unit to make sure it is properly rigged and
balanced. Make any necessary adjustments to rigging
prior to performing the full lift.
The following rigging method should be used when the PRC
DOES NOT come mounted on a base frame:
1. Before lifting, check the unit weight to ensure that hoisting
equipment is adequate size.
2. Lift using soft straps slung under the lower frame. The
straps must be secured from sliding. Care must be taken
to ensure that the lifting cables and/or straps do not
damage the unit during the lifting operation.
3. If the unit is to be lifted by forklift or other lifting devices,
make sure that lifting forces are exerted on the perimeter
base frame NOT the floor of the unit. Lift all components
to the installation site separately to avoid damage.
4. Test lift the unit to make sure it is properly rigged and
balanced. Make any necessary adjustments to rigging
prior to performing the full lift.
FIGURE 3 – TYPICAL LIFTING POINTS ON A STRUCTURAL
BASE FRAME
FIGURE 4 – TYPICAL SPREADER BAR ARRANGEMENT

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PRC
INSTALLATION INSTRUCTIONS
Assembly
PRC units may be shipped as a single unit or in sections
for field assembly by the installing contractor. Refer to the
submittal drawings for section details. This can be done using
threaded rod or other means.
Prior to joining sections, apply gasketing (supplied with unit)
to one of the mating surfaces. Cinch the sections together
and bolt through the provided flange-holes. Apply additional
caulking on the roof flange and install a rain cap over the joint
(Figure 5). Caulk the ends on the rain cap to ensure the unit is
water tight.
Core Installation
After the unit sections have been assembled, leveled, and
installed in the final location (such as on a housekeeping pad,
sleeper, or roof-curb). the aluminum heat-recovery cores can
be installed by hand.
To ensure proper core packing, care must be taken not to drop
or use excessive force when installing the cores. It is strongly
recommended that if the cores are distorted, their dimensions
are corrected before they are installed.
Cores must be installed through the service/inspection door
on the side of the unit. The louver can be removed to make
installation easier, but installation of the cores through the
louver opening is not recommended.
The PRC units may be shipped with cores of various sizes.
Refer to the diagrams located on the core service/inspection
doors for the proper stacking arrangement.
The following general instructions can be followed for core
installation:
1. Remove louvers to permit handling access to core section.
2. Remove core stop frames.
3. Install the cores by sliding one or two stacked cores along
the drain pan or along the previous row of cores. The
provided sheet should be used to help make sliding the
cores over the previous row easier.
4. Ensure the cores are contacting the core stop frames on
the far side of the unit.
5. Core-ends must be aligned to ensure proper airflow and
structural loading of the core frames.
6. The smallest cores should be installed on the top row and/
or next to the service/inspection door, refer to the stacking
diagram for details.
7. Reinstall the core stops.
8. Reinstall the louver with supplied self-taping fasteners.
FIGURE 5 – TYPICAL FLANGE JOINTS

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PRC
INSTALLATION INSTRUCTIONS
Duct Connections
Adequate building relief shall be provided so as not to over
pressurize the building. This can be accomplished by: taking
into account, through standard engineering methods, the
structure’s designed/calculated infiltration/exfiltration rate; by
properly sized relief openings; or, by interlocking powered
exhaust system.
On outdoor units with ducting passing down through the curb,
the ducting will be installed prior to the unit being attached to
the curb. For all other duct connections, the ductwork will be
connected to the unit casing using fasteners by the installing
contractor. Unless indicated on the submittal drawings, the
weight of the ducting should not be placed directly on the unit.
The installing contractor should provide an external means to
carry the duct weight.
On outdoor installed units, attached external ductwork should
be properly waterproof sealed to prevent the ingress of water
from the environment.
Access panels in the ducting near the unit are recommended.
Where no access to the unit inlet or discharge section is
provided as part of the unit (for example an access door in the
unit), access panels are strongly recommended for inspection
and service.
Blower or Fan
PRC units may have blowers or plenum fans, and can be
direct- or belt-driven. The motor, fan, frame, and mounts
should be visually inspected before initial start-up and at every
fan service.
The blower/fan and motor are aligned before shipping from the
factory, shipping and or mounting may result in misalignment,
proper motor fan alignment should be checked and
adjustments should be made, if required, prior to unit start up.
PRC units can come equipped with variable frequency drives
for speed adjustment. The unit controller allows a broad range
of blower speeds to accommodate necessary field balancing,
see the controller manual for directions on adjustment.
If the blower can not be properly balanced using the controller
settings, please contact Price Industries for further instructions.
Final Assembly
Before proceeding with the electrical installation, remove all
shipping braces, packing, etc. (Figure 6).
FIGURE 6 – TYPICAL FAN BASE SHIPPING BRACKET

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PRC
INSTALLATION INSTRUCTIONS
Electrical Installation
NOTE: Use Copper Conductors Only: Unit terminals are
designed for copper conductors only. Failure to use copper
conductors may result in unit damage.
Main Power Connection
All connections to the unit and the main disconnect switch
must conform to the applicable Electrical Codes.
1. Before proceeding, ensure that the electrical connections
on the unit and supply match. The proper voltage for
connection is listed on the rating plate attached to the unit.
2. Unit must be electrically grounded in accordance with
local codes, or in the absence of local codes, with the
National Electrical Code, ANSI/NFPA 70, and/or the
Canadian Electrical Code, CSA C22.1, if an external
electrical source is utilized.
3. Refer to the unit submittal drawing to determine the
suggested location of the field wired power supply. Where
a disconnect is supplied as part of the unit, the main
power connection will be the line side of the disconnect.
4. If the unit is not supplied with a factory mounted
disconnect (as shown in Figure 7), a field supplied
disconnect must be installed in accordance with local
codes, or in the absence of local codes, with the National
Electrical Code, ANSI/NFPA 70, and /or the Canadian
Electrical Code, CSA C22.1. Where a disconnect is
supplied by others, the main power connection to the unit
will be the line side of the main splitter block. Refer to unit
electrical wiring diagrams for details.
5. Ensure that the routing of the power supply wiring does
not interfere with removal of any unit access door, or in
any way hinder servicing of the unit.
6. Refer to the submittals for electrical service routing. Unless
indicated on the submittals, DO NOT penetrate the floor
of the unit to route electrical conduits to the unit control
panel. Provide a pitch pocket in accordance with standard
roofing practice.
7. For units that are shipped in multiple sections, some
electrical connections may have to be made by the
installer in the field. Field wiring to be done by the installer
appears as a dotted line on the wiring diagram. Wiring
to connect two sections of a unit will be marked by the
factory and a terminal block will be provided for such
connections (as shown in Figure 9).
8. Fuses are furnished and installed by the factory in
accordance with the National Electrical Code, ANSI/NFPA
70, and/or the Canadian Electrical Code, CSA C22.1. If
replacement of any fusing is necessary, the replacement
MUST be of the same amperage as the original. Failure to
use equivalent replacement fuses may result in damage
to components within the electrical system of the unit
and/or the building. If any of the original wires need to be
replaced, they must be replaced with type TEW 105° or
equivalent except where noted.
9. On units with three-phase power supplies, make sure that
motor rotation is correct as connected.
Auxiliary Power Connections
A separate 120/1/60 power supply may be required on
units with convenience outlets and lights. Refer to unit wiring
diagrams for wiring sizing details and connection points.
FIGURE 7 – TYPICAL FACTORY-SUPPLIED POWER
DISCONNECT
FIGURE 8 – TYPICAL SPLITTER/TERMINAL BLOCK

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PRC
INSTALLATION INSTRUCTIONS
Control Installation
All field wiring must be in accordance with local codes, or in
the absence of local codes, with the National Electrical Code,
ANSI/NFPA 70, and/or the Canadian Electrical Code, CSA
C22.1.
Control wiring will depend on the controls provided with
the unit. A controller is provided with the PRC unit unless
otherwise specified in the submittal documents. A controller or
thermostat must be provided by the installing contractor. Refer
to unit electrical wiring diagrams for details.
Control Connections
Units supplied with controllers may require field-wiring to a
remote sensor or control panel. Refer to unit electrical wiring
diagrams for details.
An optional space thermostat or sensor may be shipped loose
for field installation. The sensor may be duct mounted and/or
wall mounted.
1. Locate space sensors or thermostats where they will
provide a representative reading of the space condition.
2. Avoid areas with cold drafts or in the warm supply-air
stream of the unit.
3. On indoor units, do not mount the thermostat or sensor
on the unit casing, as it may be affected by heat radiating
off the unit.
4. Do not place near other sources of warmth, such as
lamps, appliances, etc.
5. Refer to unit electrical wiring diagrams for details on how
to wire the sensor to the control panel.
6. Ensure that all remote wiring is equivalent to factory
installed wiring and that voltage drop does not exceed 10
percent.
An optional duct mounted discharge air temperature sensor
may be shipped loose for field installation.
1. The sensor strip must be parallel to the flow of air.
2. The sensor must be mounted as close to the center of the
duct as possible.
3. The sensor must be located in a straight section of the
duct and must be 8-10 feet (2.4 to 3m) downstream from
the supply air connection.
4. Do not install temperature sensors near any elbows or
transitions.
5. Refer to unit electrical wiring diagrams for details on how
to wire the sensor to the control panel.
6. Ensure that all remote wiring is equivalent to factory
installed wiring and that voltage drop does not exceed 10
percent.
An optional remote control panel may be shipped loose for
field installation.
1. Locate the indoor panel where operation and maintenance
personnel have ready access.
2. Refer to unit electrical wiring diagrams for details on how
to wire the sensor to the control panel.
3. Ensure that all remote wiring is equivalent to factory
installed wiring and that voltage drop does not exceed 10
percent.
Where possible, the low limit temperature sensor is factory
mounted. Some unit configurations require the sensor to be
field mounted in the supply air ductwork. In this situation, the
sensor and field wiring will be coiled up in the weather housing.
The installing contractor shall install the sensor approximately
10 ft. (3 m) down the supply air duct.
Hot and Chilled Water Coils
Some units may include hot water and/or chilled water
coils. Multiple coils may be stacked in the same rack. Indoor
units will have the piping connections stubbed out through
a removable coil access cover. Depending on the unit
configuration, outdoor units will have either a vestibule or
access section with a pipe chase to allow the piping to be
routed into the building. Refer to the submittal drawings for
piping arrangements.
1. All piping connections should flow counter to the air flow,
with water entering at the bottom and leaving at the top of
WARNING
IMPROPER PIPING MAY LEAD TO UNIT AND BUILDING DAMAGE
Improper piping on hot water and chilled water coils may
lead to leaks that can damage the unit and the building.
Follow these instructions carefully.
WARNING
IMPROPER FREEZE PROTECTION CAN LEAD TO UNIT AND
BUILDING DAMAGE
In climates where freezing conditions occur, some form of
freeze protection must be followed to avoid coil damage
and subsequent leaks that can damage the unit and the
building. Damage from improper freeze protection will void
the warranty.

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PRC
INSTALLATION INSTRUCTIONS
the coil. Confirm that the coil can be piped properly. If not,
do not continue piping. Contact your sales representative.
2. Hot and chilled water coils are generally not supplied with
any piping or control valves. The installing contractor is
responsible for all field piping and leakage tests.
3. Stacked coils need to be piped in parallel with reverse
return piping.
4. Route properly-sized piping through the vestibule or pipe
chase to the coils. Include control and isolation valves as
required.
5. Use a backup wrench whenever attaching fittings to the
coils. Failure to do so will damage the coils and void the
warranty.
6. Leak test the unit prior to filling the system. Repair all leaks
and re-test prior to filling the system.
7. Bypass coils during system flush. Failure to do so may
cause debris to be caught in control valves and or the coil.
Cooling Device Condensate Traps
The PRC unit may have an optional DX, chilled-water
cooling coil or other condensate producing device in either a
draw-through (upstream of the supply fan) or blow-through
configuration (downstream of the supply fan). Both of these
configurations should include a condensate pan which requires
a field-installed trap. The height and configuration of the trap
will depend on the relative location and total static pressure of
the supply fan. Refer to the calculations below to properly size
draw- and blow-through trap sizing (refer to Figure 9).
Draw Through Trap Sizing
H1 = Supply Fan TSP + 1 inch (2.5cm)
H2 = 0.5 x H1
Example: Size a condensate trap for a unit with TSP of 5 in
(12.5 cm) w.c.
H1 = 5 + 1 = 6 inches (15 cm)
H2 = 0.5 x 6 = 3 inches (7.5 cm)
Blow Through Trap Sizing
H1 = supply fan TSP + 1 inch (2.5 cm) H2 = H1 - ½ inch (1.3
cm)
Example: Size a condensate trap for a unit with TSP of 5 in
(12.5 cm) w.c.
H1 = 5 + 1 = 6 inches (15 cm)
H2 = 6 – 1/2 = 5 1/2 inches (14 cm)
Wash Down Drains
Some PRC units may be supplied with wash-down drains.
These allow water to drain while washing the inside of the unit.
It is not recommended to trap these drain connections. While it
will not damage the unit, the traps would need to be constantly
primed to provide a seal. Acceptable alternatives:
1. Provide caps for each wash-down drain. These can be
removed during the wash-down process and a hose can
be attached to direct flow to a suitable floor drain (indoor
applications).
2. Pipe all the wash-down drains to a suitable floor drain
(indoor applications) and include a shut-off valve. The
valve can be opened during the wash-down process.
WARNING
IMPROPER TRAPPING MAY FLOOD UNIT
Improper condensate traps may flood the unit leading to
damage of both the unit and the building below. Follow the
following instructions carefully.
FIGURE 9 – CONDENSATE TRAP SIZING