Carrier COBRA 48/50HJ004-014 Specifications

COBRA™ Energy Recovery Units
48/50HJ004-014 with 62AQ060-300
Single-Package Rooftop Units
with Energy Recovery Capability
Installation, Start-Up, and Service Supplement
IMPORTANT: This is a supplemental instruction for the
48/50HJ Start-Up and Service Instructions. It is not
intended to take the place of the instruction or to be a complete piece by itself.
IMPORTANT: Make sure supply voltage matches unit
nameplate voltage.
CONTENTS
Page
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 1
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-42
Step 1 — Inspect Shipment . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Step 2 — Provide Unit Support . . . . . . . . . . . . . . . . . . . . . . . 2
• COBRA UNIT WITH A FULL-PERIMETER ROOF CURB
• COBRA UNIT WITH A STANDARD ROOF CURB
Step 3 — Field Fabricate Ductwork . . . . . . . . . . . . . . . . . . . 3
Step 4 — Rig and Place Unit. . . . . . . . . . . . . . . . . . . . . . . . . . 6
• POSITIONING
Step 5 — Install Flue Hood (48HJ Rooftop
Sections Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Step 6 — Install Gas Piping (48HJ Rooftop
Sections Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Step 7 — Install External Trap for Condensate
Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Step 8 — Make Electrical Connections . . . . . . . . . . . . . . 11
• FIELD POWER SUPPLY
• FACTORY-SUPPLIED NON-FUSED DISCONNECT
• FIELD CONTROL WIRING
• THERMIDISTAT™ DEVICE
• PREMIERLINK™ CONTROLLER
• HEAT ANTICIPATOR SETTINGS
• INDOOR AIR QUALITY AND CO2 SENSORS
Step 9 — Assemble and Mount Supply-Air Hood . . . . 39
Step 10 — Mount the Barometric Relief Damper. . . . . 39
Step 11 — Set the Outdoor Cooling and
Heating Thermostats. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
LIGHT COMMERCIAL THERMIDISTAT
ACCESSORY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42-46
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Dehumidification Equipment and Connections . . . . . . 42
Step 1 — Select Light Commercial
Thermidistat Location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Step 2 — Set DIP Switches . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Step 3 — Install Light Commercial Thermidistat
Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Step 4 — Set Light Commercial Thermidistat
Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Step 5 — Conduct Light Commercial
Thermidistat Start-Up and Checkout . . . . . . . . . . . . . . 45
Step 6 — Make Final Settings . . . . . . . . . . . . . . . . . . . . . . . 46
OPERATIONAL INFORMATION . . . . . . . . . . . . . . . . . . . 46-69
PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70,71
TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72-88
ROOFTOP UNIT AND ENERGY RECOVERY UNIT
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . CL-1, CL-2
SAFETY CONSIDERATIONS
Installation and servicing of air-conditioning equipment can
be hazardous due to system pressure and electrical components. Only trained and qualified service personnel should
install, repair, or service air-conditioning equipment.
Untrained personnel can perform basic maintenance functions of cleaning coils and filters and replacing filters. All other
operations should be performed by trained service personnel.
When working on air-conditioning equipment, observe precautions in the literature, tags and labels attached to the unit, and
other safety precautions that apply.
Verify that the power source supplied to the unit matches
the voltages and amperages listed on the unit rating plate.
Follow all safety codes. Wear safety glasses and work
gloves. Use quenching cloth for unbrazing operations. Have
fire extinguishers available for all brazing operations.
Disconnect gas piping from unit when leak
testing at pressure greater than 1/2 psig. Pressures greater than 1/2 psig will cause gas
valve damage resulting in hazardous condition. If gas valve is subjected to pressure
greater than 1/2 psig, it must be replaced
before use. When pressure testing fieldsupplied gas piping at pressures of 1/2 psig or
less, a unit connected to such piping must be
isolated by manually closing the gas valve.
Before performing service or maintenance operations on
unit, turn off main power switch to unit and install a lockout tag. Electrical shock could cause personal injury.
GENERAL
Carrier’s COBRA energy recovery units precondition ventilation air for the rooftop unit during winter and summer operation and recover energy from the building exhaust air. These
units are designed to satisfy the higher ventilation requirements
and other building codes while minimizing energy costs.
Factory installation of the 62AQ Energy$Recycler™ section provides the benefit of reduced field-installation time,
single point power connections, and the assurance of a factory
test for the complete COBRA energy recovery unit. The
Energy$Recycler section requires less maintenance than other
energy recovery systems and can be serviced by any qualified
refrigeration technician.
NOTE: The COBRA unit nameplate has been moved to the
opposite end of the rooftop section, on the upper,
right-hand part of the panel due to the location of the 62AQ
Energy$Recycler section.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 534-80159
Printed in U.S.A.
Form 48/50HJ,62AQ-3SIS
Pg 1
4-06
Replaces: 48/50HJ,62AQ-2SIS
Book 1 1 4 4
Tab 1a 1b 6a 6b
2. The flashing must be sealed to all ensure no water
can leak behind it, particularly around the 62AQ
Energy$Recycler™ section of the curb.
3. The Energy$Recycler section of the full-perimeter curb
must be watertight. See Fig. 2A and 2B.
INSTALLATION
Step 1 — Inspect Shipment — File a claim with the
shipping company if shipment is incomplete or damaged. See
Fig. 1 for typical shipping packaging of a COBRA™ energy
recovery unit.
Step 2 — Provide Unit Support — The COBRA
energy recovery unit can use a full-perimeter roof curb or a
standard roof curb for the rooftop section of the unit with a supplemental equipment support for the energy recovery section.
COBRA UNIT WITH A FULL-PERIMETER ROOF
CURB — If the COBRA unit is installed on the full-perimeter
curb, the supplemental equipment support is not required. If a
full-perimeter curb is used, inspect the curb for the following
REQUIRED details:
1. The ductwork must be attached to the curb.
DO NOT use the COBRA full-perimeter curb drawings to
field fabricate a replacement curb! Significant problems
can occur if a Carrier approved curb is not used.
COBRA NAMEPLATE
a48-8156
OUTDOOR AIR HOODS
Fig. 1 — Shipping Packaging (48/50HJ004-006 Shown)
DO NOT USE THIS DRAWING TO FIELD-FABRICATE A CURB! SIGNIFICANT PROBLEMS CAN OCCUR IF A CARRIER APPROVED CURB IS
NOT USED.
Deck pans
2" Return support.
Only used on some
applications.
37 3/16"
67 3/8"
DUCT OPENING SIZES
3 1/4
R1
Supply = 13 7/8" x 20 1/4"
R1 = 13 5/8" x 17 3/4"
R2 = 13 5/8" x 12 5/16"
R2
14"
Deck pans must be
watertight
Supply
14"
R1 = Return from building to HVAC
2"
92 1/2"
R2 = Return from building to 62AQ
37 3/16"
a48-8088
SIDE VIEW
END VIEW
Fig. 2A — COBRA Energy Recovery Unit Full-Perimeter Roof Curb — 48/50HJ004-007 with 62AQ060,100
2
DO NOT USE THIS DRAWING TO FIELD-FABRICATE A CURB!
SIGNIFICANT PROBLEMS CAN OCCUR IF A CARRIER
APPROVED CURB IS NOT USED.
Deck pans
2" Return support.
Only used on some
applications.
49 15/16"
78 1/4"
3 1/4
DUCT OPENING SIZES
R1
Supply = 15 11/16" x 31 3/8"
R1 = 15 5/16" x 29 1/16"
R2 = 15 5/16" x 9"
R2
14"
Deck pans must
be watertight
Supply
14"
2"
R1 = Return from building to HVAC
110 11/16"
R2 = Return from building to 62AQ
a48-8189
49 15/16"
SIDE VIEW
END VIEW
Fig. 2B — COBRA™ Energy Recovery Unit Full-Perimeter Roof Curb — 48/50HJ008-014 with 62AQ200,300
connection must be used. Attach the accessory to the basepan
per the information in the accessory installation instructions.
Thru-the-bottom connections must be installed before unit is set
on the roof.
DO NOT use the standard COBRA full-perimeter curb in a
sloped application! Contact your Carrier salesperson for a
specific COBRA SLOPED full-perimeter curb.
IMPORTANT: The gasketing of the unit to the roof curb is
critical for a watertight seal. Install gasket supplied with the
roof curb as shown in Fig. 3A and 3B. Improperly applied
gasket can result in air leaks and poor unit performance.
COBRA UNIT WITH STANDARD ROOF CURB — If a
standard rooftop curb is used (for new or retrofit applications),
it is capable of supporting the rooftop unit section. An
accessory support rail must be used to support the 62AQ
Energy$Recycler™ section. Assemble and install accessory
roof curb in accordance with instructions shipped with curb.
See Fig. 3A, 3B and 4. Install insulation, cant strips, roofing
felt, and counter flashing as shown.
Ductwork must be attached to curb, not to the unit. The accessory thru-the-bottom power and gas connection package
must be installed before the unit is set on the roof curb.
If the combined COBRA unit roof curb is not being used,
additional support is required under the Energy$Recycler
section of the unit. An accessory support and pad for the energy
recovery section or a field-fabricated and installed support can
be used. See Fig. 4. Place the protective rubber pad on the roof
so that the edge near the unit is located about 6 in. from the end
of the 62AQ Energy$Recycler section. Measure the distance
from the bottom of 62AQ Energy$Recycler rails to the pad.
Adjust the energy recovery equipment support to match the
measured distance and screw into place with the 4 screws
provided. See Fig. 4. Place the support underneath the
Energy$Recycler unit and on the protective rubber pad. This is
done by lifting the end of the 62AQ Energy$Recycler section
slightly above level and then sliding the support underneath the
rails.
If electric control power or gas service is to be routed
through the basepan, a field-installed accessory thru-the-bottom
Curb should be level. This is necessary for unit condensate
drain to function properly. Refer to Roof Curb Accessory
Installation Instructions for additional information as required.
Step 3 — Field Fabricate Ductwork — Secure all
ducts to roof curb and building structure. Do not connect ductwork to unit. Insulate and weatherproof all external ductwork,
joints, and roof openings with counter flashing and mastic in
accordance with applicable codes. See Fig. 5A and 5B for duct
dimensions.
Ducts passing through an unconditioned space must be
insulated and covered with a vapor barrier. If a plenum return is
used, the return should be ducted through the roof deck to comply with applicable fire codes.
A minimum clearance is not required around ductwork.
These units are designed for a minimum continuous heating
return-air temperature of 50 F (dry bulb), or an intermittent
operation down to 45 F (dry bulb), such as when used with a
night setback thermostat. To operate at lower return-air temperatures, a field-supplied outdoor-air temperature control must be
used to initiate both stages of heat when the temperature is
below 45 F. Indoor comfort may be compromised when these
lower air temperatures are used with insufficient heating
temperature rise.
3
CONNECTOR
PKG. ACCY.
B
C
D ALT
DRAIN
HOLE
CRBTMPWR001A01
CRBTMPWR002A01
CRBTMPWR003A01
CRBTMPWR004A01
GAS
3/
1′ -911/16″
[551]
1′ -4″
[406]
13/4″
[44.5]
4″
[19]
NPT
1/ ″
2
[12.7]
NPT
3/ ″ [19]
4
NPT
POWER CONTROL
3/
ACCESSORY
PWR
4″
[19]
NPT
1
1 /4″
[31.7]
3/ ″ [19]
4
NPT
11/4″
[31.7]
1/ ″
2
[12.7] NPT
1/ ″
2
[12.7] NPT
ROOF CURB
ACCESSORY
A
1′ -2″
CRRFCURB001A01
[356]
2′ -0″
CRRFCURB002A01
[610]
UNIT SIZE
004-007
NOTES:
1. Roof curb accessory is shipped disassembled.
2. Insulated panels.
3. Dimensions in [ ] are in millimeters.
4. Roof curb: galvanized steel.
5. Attach ductwork to curb (flanges of duct rest on
curb).
6. Service clearance: 4 ft on each side.
7.
Direction of airflow.
8. Connector packages CRBTMPWR001A01 and
2A01 are for thru-the-curb type gas. Packages
CRBTMPWR003A01 and 4A01 are for thru-thebottom type gas connections.
a48-6772
Fig. 3A — Roof Curb Details (48/50HJ004-007 Section Only)
4
CONNECTOR
PKG. ACCY.
B
C
D ALT
DRAIN
HOLE
CRBTMPWR001A01
CRBTMPWR002A01
CRBTMPWR003A01
CRBTMPWR004A01
GAS
3/ ″
4
[19]
NPT
2′ -87/16″ 1′ -1015/16″
[827]
[583]
13/4″
[44.5]
1/ ″
2
[12.7]
NPT
3/4″ [19]
NPT
POWER CONTROL
ACCESSORY
PWR
3/4″
[19]
NPT
1
1 /4″
[31.7]
3/ ″ [19]
4
NPT
11/4″
[31.7]
1/2″
[12.7] NPT
1/2″
[12.7] NPT
ROOF CURB
ACCESSORY
A
1′ -2″
CRRFCURB003A01
[356]
2′ -0″
CRRFCURB004A01
[610]
UNIT SIZE
008-014
NOTES:
1. Roof curb accessory is shipped disassembled.
2. Insulated panels: 1-in. thick polyurethane foam,
13/4 lb density.
3. Dimensions in [ ] are in millimeters.
4. Roof curb: 16-gage steel.
5. Attach ductwork to curb (flanges of duct rest on
curb).
6. Service clearance 4 ft on each side.
7.
Direction of airflow.
8. Connector packages CRBTMPWR001A01 and
2A01 are for thru-the-curb gas type. Packages
CRBTMPWR003A01 and 4A01 are for thruthe-bottom type gas connections.
a48-6773
Fig. 3B — Roof Curb Details (48/50HJ008-014 Section Only)
5
EQUIPMENT SUPPORT DIMENSIONS (in.)
PART NUMBER
A
B
C
CRAQSUPT001A00
36.9 40 8 to 14
3-6 Ton
CRAQSUPT002A00
36.9 40 14 to 24
CRAQSUPT003A00
49.7
54 8 to 14
71/2-121/2 Ton
CRAQSUPT004A00
49.7 54 14 to 24
UNIT SIZE
4”
A
ENERGY$RECYCLER™
SECTION
C”
ROOFTOP UNIT
SECTION
SCREW
SUPPORT
IN PLACE
ADJUSTABLE
EQUIPMENT
SUPPORT
PAD
CURB
ROOF
10” x B (SEE CHART)
PROTECTIVE
RUBBER PAD
(EPDM)
a48-8157
Fig. 4 — Supplemental Energy Recovery Section Equipment Support
Unit may be installed directly on wood flooring or on
Class A, B, or C roof-covering material when roof curb is used.
Although unit is weatherproof, guard against water from
higher level runoff and overhangs.
Flue vent discharge must have a minimum horizontal clearance of 4 ft from electric and gas meters, gas regulators, and
gas relief equipment.
Minimum distance between unit and other electrically live
parts is 48 inches.
Flue gas can deteriorate building materials. Orient unit
such that flue gas will not affect building materials. Locate
mechanical draft system flue assembly at least 48 in. from an
adjacent building or combustible material.
Adequate combustion-air and ventilation-air space must be
provided for proper operation of this equipment. Be sure that
installation complies with all local codes and Section 5.3, Air
for Combustion and Ventilation, NFGC (National Fuel Gas
Code), and ANSI (American National Standards Institute)
Z223.1, and NFPA (National Fire Protection Association)
54 TIA-54-84-1. In Canada, installation must be in accordance
with the CAN1-B149 installation codes for gas burning
appliances.
After unit is in position, remove rigging skids and shipping
materials.
Step 4 — Rig and Place Unit — Keep unit upright
and do not drop. Spreader bars are not required if top crating is
left on unit. Rollers may be used to move unit across a roof.
Remove the bottom wooden skids that are under the unit by
removing the wooden plates that hold the bottom wooden
frame to the unit. Level by using unit frame as a reference. Lifting holes are provided in base rails as shown in Fig. 6A and 6B.
Refer to rigging instructions on unit.
All panels must be in place when rigging.
POSITIONING — Maintain clearance around and above unit
to provide minimum distance from combustible materials,
proper airflow, and service access. A properly positioned unit
will have the following clearances between unit and roof curb:
1/4-in. clearance between roof curb and base rails on each side
and duct end of unit; 1/4-in. clearance between roof curb
and condenser coil end of unit for size 004-007 units and a
35/16-in. clearance between roof curb and condenser coil end of
unit for size 008-014 units.
Do not install unit in an indoor location. Do not locate unit
air inlets near exhaust vents or other sources of contaminated
air.
Be sure that unit is installed such that snow will not block
the combustion intake or flue outlet.
6
a48-6359
7
FRONT
FRONT
RIGHT
SIDE
RIGHT SIDE
Fig. 5A — Base Unit Dimensions — COBRA™ Energy Recovery Unit — 48/50HJ004-007 with 62AQ060,100
LEFT SIDE
LEFT
SIDE
REAR
a48-8161
8
REQUIRED HOLE
SIZES (MAX.)
22.2 [0.88]
22.2 [0.88]
28.4 [1.12]
44.4 [1.75]
31.8 [1.25]
41.3 [1.62]
WIRE SIZE
ACCESSORY
24V
POWER*
POWER*
GAS
GAS
Fig. 5A — Base Unit Dimensions — COBRA™ Energy Recovery Unit — 48/50HJ004-007 with 62AQ060,100 (cont)
*SELECT EITHER 19.0 [0.75] OR 31.8 [1.25] FOR POWER, DEPENDING ON
WIRE SIZE.
THREADED
CONDUIT
SIZE
12.7 [0.50]
12.7 [0.50]
19.0 [0.75]
31.7 [1.25]
(003) 12.7 [0.50] FPT
(004) 19.0 [0.75] FPT
BOTTOM POWER CHART
THESE HOLES REQUIRED FOR USE
WITH ACCESSORY PACKAGES
CRBTMPWR001A01, 3A01 12.7 [0.50], 19.0 [0.75]
OR
CRBTMPWR002A01, 4A01 12.7 [0.50], 31.8 [1.25]
a48-6453
9
Fig. 5B — Base Unit Dimensions — COBRA™ Energy Recovery Unit — 48/50HJ008-014 with 62AQ200,300
a48-8162
10
REQUIRED HOLE
SIZES (MAX.)
22.2 [0.88]
22.2 [0.88]
28.4 [1.12]
44.4 [1.75]
31.8 [1.25]
41.3 [1.62]
WIRE SIZE
ACCESSORY
24V
POWER*
POWER*
GAS
GAS
Fig. 5B — Base Unit Dimensions — COBRA™ Energy Recovery Unit — 48/50HJ008-014 with 62AQ200,300 (cont)
*SELECT EITHER 19.0 [0.75] OR 31.8 [1.25] FOR POWER,
DEPENDING ON WIRE SIZE.
THREADED
CONDUIT
SIZE
12.7 [0.50]
12.7 [0.50]
19.0 [0.75]
31.7 [1.25]
(003) 12.7 [0.50] FPT
(004) 19.0 [0.75] FPT
BOTTOM POWER CHART
THESE HOLES REQUIRED FOR USE
WITH ACCESSORY PACKAGES
CRBTMPWR001A01, 3A01 12.7 [0.50], 19.0 [0.75]
OR
CRBTMPWR002A01, 4A01 12.7 [0.50], 31.8 [1.25]
a48-6361
48HJ004 w/62AQ060
48HJ004 w/62AQ100
48HJ005 w/62AQ060
48HJ005 w/62AQ100
48HJ006 w/62AQ060
48HJ006 w/62AQ100
48HJ007 w/62AQ060
48HJ007 w/62AQ100
50HJ004 w/62AQ060
50HJ004 w/62AQ100
50HJ005 w/62AQ060
50HJ005 w/62AQ100
50HJ006 w/62AQ060
50HJ006 w/62AQ100
50HJ007 w/62AQ060
50HJ007 w/62AQ100
MAX WEIGHT
lb
kg
890
404
905
411
900
409
915
415
920
418
935
425
995
452
1010
459
795
361
810
368
805
365
820
372
825
375
840
381
880
400
895
407
A
in.
95.6
95.6
95.6
95.6
95.6
95.6
95.6
95.6
95.6
95.6
95.6
95.6
95.6
95.6
95.6
95.6
B
mm
2428.20
2428.20
2428.20
2428.20
2428.20
2428.20
2428.20
2428.20
2428.20
2428.20
2428.20
2428.20
2428.20
2428.20
2428.20
2428.20
in.
57.38
57.38
57.38
57.38
57.38
57.38
57.38
57.38
57.38
57.38
57.38
57.38
57.38
57.38
57.38
57.38
C
mm
1457.30
1457.30
1457.30
1457.30
1457.30
1457.30
1457.30
1457.30
1457.30
1457.30
1457.30
1457.30
1457.30
1457.30
1457.30
1457.30
in.
33.35
33.35
33.35
33.35
33.35
33.35
42.12
42.12
33.35
33.35
33.35
33.35
33.35
33.35
42.12
42.12
mm
847
847
847
847
847
847
1070
1070
847
847
847
847
847
847
1070
1070
Fig. 6A — Rigging Label — COBRA™ Energy Recovery Unit — Sizes 48/50HJ004-007
this reason, the bottom drain on the rooftop unit CANNOT be
used for a condensate drain. The 3/4-in. drain connection on the
energy recovery section is located near the bottom left of the
exhaust air section. See Fig. 5A and 5B. The Energy$Recycler
section must have a field-fabricated, external, P-trap installed for
condensate drainage. Trap must be at least 4 in. deep to protect
against freeze-up. If the drain line is installed downstream from
the external trap, pitch the line away from the unit at 1 in. per
10-ft of run. Do not use a pipe smaller than the connection
(3/4-in.).
Step 5 — Install Flue Hood (48HJ Rooftop Sections Only) — Refer to the 48HJ installation instructions for
information on installing the flue hood.
Step 6 — Install Gas Piping (48HJ Rooftop Sections Only) — The gas supply for gas heat units (48HJ) can
be run through the curb or through the bottom of the unit. See
Fig. 7 and 8.
When installing the gas supply through the curb, the gas
piping will exit out through the side of the roof curb and a
hole in the base rail. The accessory thru-the-curb service
connections (part numbers CRBTMPWR001A01 and
CRBTMPWR002A01) are required. See Fig. 9. A fieldsupplied regulator is installed outside the unit and the piping is
connected to the unit gas valve.
When installing gas supply through the bottom of the
unit, the gas piping is routed through a knockout in the unit
basepan and then connected to the unit gas valve. The
accessory thru-the-bottom service connections (part numbers
CRBTMPWR003A01 and CRBTMPWR004A01) are required. See Fig. 10 and 11. Refer to the 48HJ installation
instructions for more information on installing the gas piping.
Step 8 — Make Electrical Connections
Unit cabinet must have an uninterrupted, unbroken electrical ground to minimize the possibility of personal injury if
an electrical fault should occur. This ground may consist of
electrical wire connected to unit ground lug in control compartment, or conduit approved for electrical ground when
installed in accordance with NEC (National Electrical
Code), ANSI/NFPA, latest edition, and local electrical
codes. Do not use gas piping as an electrical ground. Failure to follow this warning could result in the installer being
liable for personal injury of others.
Step 7 — Install External Trap For Condensate
Drain — The condensate from the rooftop unit along with
condensate from the upper coil of the 62AQ Energy$Recycler™
section is internally piped to the condensate pan in the lower
section of the 62AQ Energy$Recycler section. See Fig. 12. For
FIELD POWER SUPPLY — All units except 208/230-v
units are factory-wired for the voltage shown on the nameplate.
11
a48-6455
48HJ008 w/62AQ200
48HJ008 w/62AQ300
48HJ009 w/62AQ200
48HJ009 w/62AQ300
48HJ012 w/62AQ200
48HJ012 w/62AQ300
48HJ014 w/62AQ200
48HJ014 w/62AQ300
50HJ008 w/62AQ200
50HJ008 w/62AQ300
50HJ009 w/62AQ200
50HJ009 w/62AQ300
50HJ012 w/62AQ200
50HJ012 w/62AQ300
50HJ014 w/62AQ200
50HJ014 w/62AQ300
MAX WEIGHT
lb
kg
1310
595
1355
616
1400
636
1445
657
1400
636
1445
657
1440
655
1485
675
1240
564
1285
584
1325
602
1370
623
1325
602
1370
623
1365
620
1410
641
A
in.
77.42
77.42
77.42
77.42
77.42
77.42
77.42
77.42
77.42
77.42
77.42
77.42
77.42
77.42
77.42
77.42
B
mm
1966.5
1966.5
1966.5
1966.5
1966.5
1966.5
1966.5
1966.5
1966.5
1966.5
1966.5
1966.5
1966.5
1966.5
1966.5
1966.5
in.
66.50
66.50
66.50
66.50
66.50
66.50
66.50
66.50
66.50
66.50
66.50
66.50
66.50
66.50
66.50
66.50
C
mm
1689.10
1689.10
1689.10
1689.10
1689.10
1689.10
1689.10
1689.10
1689.10
1689.10
1689.10
1689.10
1689.10
1689.10
1689.10
1689.10
in.
42.12
42.12
42.12
42.12
50.12
50.12
50.12
50.12
42.12
42.12
50.12
50.12
50.12
50.12
50.12
50.12
mm
1070
1070
1070
1070
1273
1273
1273
1273
1070
1070
1273
1273
1273
1273
1273
1273
Fig. 6B — Rigging Label — COBRA™ Energy Recovery Unit — Sizes 48/50HJ008-014
GAS VALVE
CONNECTION
GAS VALVE
CONNECTION
GAS
REGULATOR
(FIELD
SUPPLIED)
GAS
REGULATOR
(FIELD
SUPPLIED)
MANUAL
SHUTOFF
(FIELD
SUPPLIED)
MANUAL
SHUTOFF
(FIELD
SUPPLIED)
GAS
PIPING
GAS
PIPING
a48-6479
a48-6480
Fig. 8 — Thru-the-Bottom Gas Connections
Fig. 7 — Thru-the-Curb Gas Connections
12
When installing units, provide a disconnect per the NEC.
All field wiring must comply with NEC and local
requirements.
Install field wiring as follows:
1. Install conduit through side panel openings. Install conduit between disconnect and control box.
2. Install power lines to terminal connections as shown in
Fig. 13-15.
Voltage to compressor terminals during operation must be
within voltage range indicated on unit nameplate (see
Tables 1A-1H). On 3-phase units, voltages between phases must
be balanced within 2% and the current within 10%. Use the formula shown in the legend for Tables 1A-1H, Note 2 to determine the percent of voltage imbalance. Operation on improper
line voltage or excessive phase imbalance constitutes abuse and
may cause damage to electrical components. Such operation
would invalidate any applicable Carrier warranty.
FACTORY-SUPPLIED NON-FUSED DISCONNECT — The
factory-supplied disconnect is capable of handling disconnect
amps up to 80 A for a COBRA energy recovery unit. For disconnect amps greater than 80 A, a field-supplied disconnect is
required.
FIELD-CONTROL WIRING — There are three required
inputs to properly control COBRA™ units: temperature,
humidity and an occupied/unoccupied schedule. The four recommended control combinations are:
• Thermidistat™ and electro-mechanical controls (Fig. 16)
• digital thermostat, humidistat and electro-mechanical controls (Fig. 17)
• humidistat, space temperature sensor and PremierLink™
controls (Fig. 18)
• Thermidistat and PremierLink controls (Fig. 19)
The most widely used combinations are the light commercial
Thermidistat or PremierLink with thermostat and humidistat.
If the unit is equipped with the Humidi-MiZer™ or
MoistureMi$er™ option, these systems also require a humidity
input. The Energy$Recycler wiring accepts the sensed space
humidity input and sends the appropriate signal to the rooftop
unit. See Fig. 14-17.
NOTE: The humidity sensor device used with a COBRA or
field-installed 62AQ unit with or without a Humidi-MiZer or
MoistureMi$er dehumidification option must be a contact
closure type device such as a humidistat or a light commercial
Thermidistat device.
NOTE: For wire runs up to 50 ft, use No. 18 AWG (American
Wire Gage) insulated wire (35 C minimum). For wire runs of
50 to 75 ft, use No. 16 AWG insulated wire (35 C minimum).
For runs that require more than 75 ft, use No. 14 AWG insulated wire (35 C minimum). All wire larger than No. 18 AWG
cannot be directly connected to the thermostat and will require
a junction box and splice at the thermostat.
THERMIDISTAT DEVICE — The light commercial Thermidistat device is a 7-day programmable, wall-mounted, low
voltage field-installed control. It combines temperature and
humidity control in a single unit and provides separate set
points for heating and cooling. The control adds a dehumidification control function with separate set points for up to 2
occupied and unoccupied periods per day.
If a Thermidistat device is used, install the Thermidistat assembly accessory according to installation instructions included with the accessory. Place the Thermidistat assembly on a
solid wall in the conditioned space to sense average temperature in accordance with Thermidistat installation instruction on
page 43. Connect Thermidistat wires to terminal board. Route
Thermidistat cable or equivalent single leads of colored wire
from subbase terminals through connector on unit to lowvoltage connections (shown in Fig. 16). Thermidistat control
wiring is routed to both the rooftop unit control box and the
62AQ Energy$Recycler control box.
GAS
SERVICE
PLATE
TYP
2 3/8”
[61]
a48-6481
Fig. 9 — Thru-the-Curb
Gas Connection (Accessory)
EMBOSSMENT
BRASS FITTING
SUPPORTa48-6482
BRACKET
Fig. 10 — Internal Gas Line Piping with Thru-theBottom Connection (3 to 6 Ton Shown)
UNION
MANUAL
SHUT OFF
LOUVERED
PANEL
a48-5008
DRIP LEG
Fig. 11 — External Gas Piping with Thru-theBottom Connection (3 to 6 Ton Models Shown)
If the 208/230-v unit is to be connected to a 208-v power
supply, the transformer must be rewired by moving the black
wire with the 1/4-in. female space connector from the 230-volt
connection and moving to the 200-volt 1/4-in. male terminal on
the primary side of the transformer.
Refer to unit label diagram for additional information. Pigtails are provided for field wire connections. Use factorysupplied splices or UL (Underwriters Laboratories) approved
copper/aluminum connector.
13
20 mA humidity signal from the humidity sensor. The universal
controller provides an output relay contact that is connected to
the HM terminal in the Energy$Recycler section’s control box.
The humidity sensor output does not connect directly to the
COBRA unit. The universal controller is used to configure the
humidity sensor’s set point; when the sensed humidity level is
reached, the controller sends a signal to the HM terminal.
The universal controller is also connected to the CCN bus
wiring, therefore the humidity set point and sensed humidity
value is displayed on the network. One universal controller can
be used for up to eight (8) different COBRA units.
The PremierLink controller has two modes of sensor input:
Temperature mode or Sensor mode. In Temperature mode, the
PremierLink controller accepts input from a Carrier approved
space thermostat. Input connections for this mode use terminal
strip TB3 as shown in Fig. 21-23. Terminal strip TB3 connects
to the J4 contacts on the PremierLink module. When the
PremierLink controller is factory-installed, it is completely
wired, except for the field-installed sensors. Currently, the only
sensor that is included from the factory is the supply air temperature sensor. The following field-installed sensors are
required for PremierLink controller operation:
• space temperature sensor — in sensor mode a space temperature sensor (SPT) is required, or for thermostat mode
a thermostat is required, for all applications.
• outdoor-air temperature sensor (OAT) — required for all
applications.
• supply-air temperature sensor (SAT) — required for all
applications (included when PremierLink controller is
factory-installed).
• indoor-air quality sensor (IAQ) — required for demand
control ventilation.
• outdoor-air quality sensor (OAQ) — required for
demand control ventilation.
HEAT ANTICIPATOR SETTINGS — Set heat anticipator
settings at 0.14 amp for the first stage and 0.14 amp for secondstage heating, when available.
PREMIERLINK™ CONTROLLER — The PremierLink digital controller is a Direct Digital Control (DDC) box that mounts
in the rooftop unit under the main unit control box. It is
designed to be connected to the Carrier Comfort Network®
(CCN) system, where all the input and output points and control screens can be monitored for servicing and troubleshooting
purposes. However, the PremierLink controller can also be
connected and operated via thermostat. For details and additional information, refer to the Retrofit PremierLink Installation
Instructions and Application Data.
The PremierLink controller is available factory-installed or
as a field retrofit accessory. The PremierLink controller is
designed to allow users the access and ability to change factory
defined settings, thus expanding the function of the standard
rooftop unit control. However, the PremierLink controller does
not have an incorporated visual interface. It requires a
CCN accessory such as a Navigator™ device, System Pilot™
unit or personal computer equipped with Carrier’s proprietary
ComfortWORKS® or ServiceTool software.
If a PremierLink controller is used, a Thermidistat device
does not have to be used; a humidistat and separate room air
sensor can also be used. Two extra terminal blocks (TB2 and
TB3) are provided in the control box for all units with PremierLink controls. No wires should be directly connected to the
PremierLink control. Wire sensors to TB2 or TB3. Humidistat
is wired to TB1 and the Energy$Recycler section. See Fig. 17.
Pass the control wires through the hole provided in the corner
post; then feed wires through the raceway build into the corner
post to the 24-v barrier located on the left side of the control box.
See Fig. 20A and 20B. The raceway provides the UL required
clearance between high voltage and low voltage wiring.
The PremierLink controller does not support humidity control. A separate field-supplied humidity device that supports contact closure must be used. However, remote humidity sensing
and control on a CCN system is possible using a PremierLink
controller, a 3V™ universal controller and a 3V compatible
humidity sensor. In this configuration, the universal controller
provides 24 vdc power to the humidity sensor and accepts a 4 to
CONDENSATE DRAIN
FROM ROOFTOP
SECTION
CONDENSATE DRAIN FROM
ENERGY RECOVERY SUPPLY
(EVAPORATOR) COIL
ENERGY RECOVERY EXHAUST
(CONDENSER) COIL
62AQ ENERGY$RECYCLER
SECTION DRAIN PAN
NOTE: Ensure condensate pan from rooftop
section is properly sloped in order for water to
flow to the 62AQ Energy$Recycler™ section
drain pan.
CONDENSATE
DRAIN
OUTLET
FROM UNIT
a48-8160
Fig. 12 — Condensate Drain Location
14
a48-3511
a48-3509
208/230-3-60
460-3-60
(SIZE 48/50HJ007 ONLY)
208/230-1-60
a48-3512
a48-3510
575-3-60
(SIZE 48/50HJ007 ONLY)
208/230-3-60
575-3-60, 460-3-60
(SIZES 48/50HJ004-006)
a48-6456
a48-6457
208/230-3-60 AND 460-3-60
(SIZES 48/50HJ008-014)
C
COMP
IFC
NEC
TB
—
—
—
—
—
575-3-60
(SIZES 48/50HJ008-014)
LEGEND
Contactor
Compressor
Indoor-Fan Contactor
National Electrical Code
Terminal Block
Fig. 13 — Power Wiring Connections
15
PREMIERLINK™ TERMINAL
BLOCK
(TB2)
CONTROL WIRING
TERMINAL BLOCK
(TB1)
OPTIONAL FACTORY - INSTALLED
DISCONNECT
(TB3)
POWER WIRING
Fig. 14 — Field Wiring Connections (Terminal Blocks in Rooftop Unit Section)
TERMINAL
BLOCK
a48-6487
Fig. 15 — Field Wiring Connections
(Terminal Block in Energy Recovery Section)
16
a48-8163
BASE UNIT
CONNECTION
BOARD
CONNECTION
BOARD
HM
OC
W2
R
Y1
Y2
W1
T STAT
W1
W2
G
C
W2
X
UNIT
W1
ROOFTOP SECTION
CONTROL BOX
ENERGY$RECYCLER™
CONTROL
BOX
HM
HM
THERMOSTAT
CONNECTION
BOARD
R
C
Y1
Y2
G
W1
W2
OC
DEHUM
a48-8159
LIGHT COMMERCIAL THERMIDISTAT DEVICE
Fig. 16 — Control Wiring with Thermidistat™ Device and Electro-Mechanical Controls
17
BASE UNIT
CONNECTION
BOARD
CONNECTION
BOARD
R
HM
Y1
Y2
OC
W2
W1
T STAT
W1
W2
G
C
W2
X
UNIT
W1
ROOFTOP SECTION
CONTROL BOX
HM
ENERGY$RECYCLER™
CONTROL
BOX
HM
HM
R
GRA
RED
HUMIDISTAT
O/W2
Y1/W2
R
G
Y/Y2
W/W1
C
B
L
DO NOT
USE
SI
S2
OPEN HOLE
FOR WIRES
MOUNTING HOLES
a48-8185
Fig. 17 — Control Wiring with Digital Thermostat, Humidistat and Electro-Mechanical Controls
18
TB2
1
2
3
4
5
6
7
8
BLU
BRN
BLK
TB1
R
Y1
HM
OC
W2
Y2
W1
T STAT
W1
W2
G
C
W2
X
UNIT
W1
ROOFTOP SECTION
CONTROL BOX
HM
ENERGY$RECYCLER™
CONTROL
BOX
PREMIERLINK
CONTROLS
HM
ROOFTOP UNIT
SECTION
HM
R
GRA
R1
RED
HUMIDISTAT
1
2
3
4
SEN
SW1
5
6
RED(+)
WHT(GND)
BLK(-)
CCN COM
SET
BLK
(T56)
BRN (GND)
BLU (SPT)
SENSOR WIRING
JUMPER
TERMINALS
AS SHOWN
Cool
Warm
SPACE TEMPERATURE SENSOR
(33ZCT56SPT)
a48-8186
Fig. 18 — Control Wiring with Humidistat, Space Temperature Sensor, and PremierLink™ Controls
19
TB1
1
2
3
4
5
6
7
8
R
HM
Y1
Y2
OC
W2
W1
T STAT
W1
W2
G
C
W2
X
UNIT
W1
ROOFTOP SECTION
CONTROL BOX
HM
ENERGY$RECYCLER™
CONTROL
BOX
PREMIERLINK
CONTROLS
HM
THERMOSTAT
CONNECTION
BOARD *
C
G
R
Y1
Y2
W1
W2
OC
DEHUM
a48-8187
LIGHT COMMERICAL THERMIDISTAT DEVICE
NOTE: Thermidistat connection terminal arrangement for schematic purposes only.
Fig. 19 — Control Wiring with Thermidistat™ and PremierLink™ Controls
20
RACEWAY
LOW VOLTAGE
CONNECTIONS
INTEGRATED GAS UNIT
CONTROLLER (IGC)
FIELD-SUPPLIED
DISCONNECT
(IF REQUIRED)
OPTIONAL
INTERNAL
DISCONNECT
(80 AMP MAX)
PREIMERLINK™
CONTROL
(OPTIONAL)
CONDUIT WITH
WATERTIGHT
CONNECTIONS
(FIELD-SUPPLIED)
ROOF CURB
POWER
SUPPLY
POWER WIRING
a48-6822
Fig. 20A — Power Wiring Routing with Thru-the-Bottom Accessory (Gas Unit Shown)
RACEWAY
LOW VOLTAGE
CONNECTIONS
INTEGRATED GAS UNIT
CONTROLLER (IGC)
FIELD-SUPPLIED
DISCONNECT
(IF REQUIRED)
OPTIONAL IINTERNAL
DISCONNECT
(80 AMP MAX)
PREIMERLINK™
CONTROL
(OPTIONAL)
CONDUIT
WIRING KNOCKOUT
CONDUIT
ROOF
ROOF CURB
POWER
SUPPLY
POWER WIRING
a48-6823
Fig. 20B — Power Wiring Routing from Outside of Unit (Gas Unit Shown)
21
22
Fig. 21 — PremierLink™ Controller Sensor Wiring —
With Programmable or Non-Programmable Thermostat
NOTE: Remove all unused red wires from J4 connector to prevent 24 vac shorting other components or ground. Inputs on J4 are 24 vac; red leads are voltage source.
a33-682
23
Fig. 22 — PremierLink™ Field-Installed Controller Sensor Mode Contacts
NOTE: Remove red wire from J4-9 to prevent 24 vac shorting out other components or ground.
a48-8067
TERMINAL
BLOCK
a48-6487
Fig. 23 — Field Wiring Connections
(Terminal Block in Energy Recovery Section)
24
Table 1A — Electrical Data (COBRA™ Energy Recovery 48HJ004-007 Units with 62AQ060)
UNIT
SIZE
NOMINAL
V-PH-Hz
IFM
TYPE
208/230-1-60
STD
STD
208/230-3-60
HIGH
48HJ004
STD
460-3-60
HIGH
208/230-1-60
STD
STD
208/230-3-60
48HJ005
HIGH
STD
460-3-60
HIGH
208/230-1-60
STD
STD
208/230-3-60
48HJ006
HIGH
STD
460-3-60
HIGH
STD
208/230-3-60
HIGH
48HJ007
STD
460-3-60
HIGH
FLA —
HACR —
IFM —
LRA —
MCA —
MOCP —
NEC —
UL
—
CONV
OUTLET
62AQ
FLA
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.2
9.2
LEGEND
Full Load Amps
Heating, Air Conditioning and Refrigeration
Indoor (Evaporator) Fan Motor
Locked Rotor Amps
Minimum Circuit Amps
Maximum Overcurrent Protection
National Electrical Code
Underwriters Laboratories
POWER SUPPLY*
MCA
MOCP†
34.8/34.8
40/40
40.8/40.8
45/45
27.7/27.7
35/35
33.7/33.7
40/40
28.6/28.6
35/35
34.6/34.6
40/40
13.6
15
16.3
20
14.0
20
16.7
20
44.4/44.4
60/60
50.4/50.4
60/60
31.7/31.7
40/40
37.7/37.7
40/40
32.6/32.6
40/40
38.6/38.6
45/45
15.2
20
17.9
20
15.6
20
18.3
20
53.3/53.3
70/70
59.3/59.3
70/70
38.1/38.1
45/45
44.1/44.1
50/50
39.8/39.8
45/45
45.8/45.8
50/50
19.3
25
22.0
25
20.1
25
22.8
25
42.0/42.0
50/50
48.0/48.0
60/60
43.7/43.7
50/50
49.7/49.7
60/60
19.8
25
22.5
25
20.6
25
23.3
30
DISCONNECT SIZE
FLA
LRA
35/35
135/135
41/41
140/140
29/29
124/124
34/34
129/129
30/30
154/154
35/35
158/158
14
63
17
65
15
77
17
80
44/44
173/173
50/50
178/178
33/33
140/140
38/38
145/145
34/34
170/170
39/39
174/174
16
71
18
73
16
85
19
87
53/53
240/240
59/59
244/244
39/39
202/202
44/44
207/207
41/41
221/221
46/46
226/226
20
101
22
104
20
111
23
113
42/42
234/234
48/48
239/239
44/44
253/253
50/50
258/258
20
114
23
116
21
124
23
126
Example: Supply voltage is 460-3-60.
AB = 452 v
BC = 464 v
AC = 455 v
Average Voltage =
452 + 464 + 455
3
1371
3
= 457
=
*The values listed in this table do not include power exhaust. See
Power Exhaust table for requirements.
†Fuse or HACR breaker.
Determine maximum deviation from average voltage.
(AB) 457 – 452 = 5 v
(BC) 464 – 457 = 7 v
(AC) 457 – 455 = 2 v
Maximum deviation is 7 v.
Determine percent of voltage imbalance.
7
% Voltage Imbalance = 100 x
457
= 1.53%
This amount of phase imbalance is satisfactory as it is below the
maximum allowable 2%.
NOTES:
1. In compliance with NEC requirements for multimotor and combination load equipment (refer to NEC Articles 430 and 440), the
overcurrent protective device for the unit shall be fuse or HACR
breaker. UL, Canada units may be fuse or circuit breaker.
2. Unbalanced 3-Phase Supply Voltage
Never operate a motor where a phase imbalance in supply voltage is greater than 2%. Use the following formula to determine
the percent of voltage imbalance.
max voltage deviation from average voltage
= 100 x
average voltage
IMPORTANT: If the supply voltage phase imbalance is more than
2%, contact your local electric utility company immediately.
25
Table 1B — Electrical Data (COBRA™ Energy Recovery 50HJ004-007 Units with 62AQ060)
UNIT
SIZE
NOMINAL
V-PH-Hz
208/230-1-60
IFM
TYPE
CONV
OUTLET
62AQ
FLA
NO
9.2
YES
9.2
NO
9.2
YES
9.2
NO
9.2
YES
9.2
NO
9.2
YES
9.2
NO
9.2
YES
9.2
NO
9.2
YES
9.2
NO
9.2
YES
9.2
NO
9.2
YES
9.2
NO
9.2
YES
9.2
STD
STD
208/230-3-60
50HJ004
HIGH
STD
460-3-60
HIGH
208/230-1-60
STD
STD
50HJ005
208/230-3-60
HIGH
460-3-60
STD
HEATER MODEL NO.
CRHEATER---A00
—
001
002
003
004
002+002
—
001
002
003
004
002+002
—
001
002
003
004
005
—
001
002
003
004
005
—
001
002
003
004
005
—
001
002
003
004
005
—
006
007
008
009
—
006
007
008
009
—
006
007
008
009
—
006
007
008
009
—
001
003
002+002
003+003
004+004
—
001
003
002+002
003+003
004+004
—
002
003
005
004+004
—
002
003
005
004+004
—
002
003
005
004+004
—
002
003
005
004+004
—
006
008
009
008+008
—
006
008
009
008+008
26
ELECTRIC HEAT
Actual
FLA
kW†
— /—
— /—
3.3/ 4.0
15.9/18.3
4.9/ 5.8
23.5/27.1
6.5/ 8.0
31.4/36.3
7.9/ 9.6
37.9/43.1
9.8/11.6
46.9/54.2
— /—
— /—
3.3/ 4.0
15.9/18.3
4.9/ 5.8
23.5/27.1
6.5/ 8.0
31.4/36.3
7.9/ 9.6
37.9/43.1
9.8/11.6
46.9/54.2
— /—
— /—
3.3/ 4.0
15.9/18.3
4.9/ 5.8
23.5/27.1
6.5/ 8.0
31.4/36.3
7.9/ 9.6
37.9/43.1
12.0/14.7
33.4/38.5
— /—
— /—
3.3/ 4.0
15.9/18.3
4.9/ 5.8
23.5/27.1
6.5/ 8.0
31.4/36.3
7.9/ 9.6
37.9/43.1
12.0/14.7
33.4/38.5
— /—
— /—
3.3/ 4.0
15.9/18.3
4.9/ 5.8
23.5/27.1
6.5/ 8.0
31.4/36.3
7.9/ 9.6
37.9/43.1
12.0/14.7
33.4/38.5
— /—
— /—
3.3/ 4.0
15.9/18.3
4.9/ 5.8
23.5/27.1
6.5/ 8.0
31.4/36.3
7.9/ 9.6
37.9/43.1
12.0/14.7
33.4/38.5
—
—
5.5
7.2
8.1
13.8
10.6
16.8
12.9
27.7
—
—
5.5
7.2
8.1
13.8
10.6
16.8
12.9
27.7
—
—
5.5
7.2
8.1
13.8
10.6
16.8
12.9
27.7
—
—
5.5
7.2
8.1
13.8
10.6
16.8
12.9
27.7
— /—
— /—
3.3/ 4.0
15.9/18.3
6.5/ 8.0
31.4/36.3
9.8/11.6
46.9/54.2
13.1/16.0
62.8/72.5
16.0/19.3
75.8/87.5
— /—
— /—
3.3/ 4.0
15.9/18.3
6.5/ 8.0
31.4/36.3
9.8/11.6
46.9/54.2
13.1/16.0
62.8/72.5
16.0/19.3
75.8/87.5
— /—
— /—
4.9/ 5.8
13.6/15.6
6.5/ 8.0
18.1/20.9
12/.014.7
33.4/38.5
16.0/19.3
43.8/50.5
— /—
— /—
4.9/ 5.8
13.6/15.6
6.5/ 8.0
18.1/20.9
12.0/14.7
33.4/38.5
16.0/19.3
43.8/50.5
— /—
— /—
4.9/ 5.8
13.6/15.6
6.5/ 8.0
18.1/20.9
12.0/14.7
33.4/38.5
16.0/19.3
43.8/50.5
— /—
— /—
4.9/ 5.8
13.6/15.6
6.5/ 8.0
18.1/20.9
12.0/14.7
33.4/38.5
16.0/19.3
43.8/50.5
—
—
7.2
7.2
13.8
13.8
16.8
16.8
27.7
27.7
—
—
7.2
7.2
13.8
13.8
16.8
16.8
27.7
27.7
POWER SUPPLY*
DISCONNECT SIZE
MCA
MOCP**
FLA
LRA
34.8/34.8
35.7/38.8
45.2/49.7
55.1/61.2
63.2/70.5
74.5/83.6
40.8/40.8
40.8/43.0
50.0/53.9
59.9/65.4
68.0/74.7
79.3/87.8
27.7/27.7
27.7/29.1
32.8/35.4
38.5/42.0
43.2/47.4
57.5/64.0
33.7/33.7
33.7/33.7
37.6/39.6
43.3/46.2
48.0/51.6
62.3/68.2
28.6/28.6
28.6/30.0
33.7/36.3
39.4/42.9
44.1/48.3
58.4/64.9
34.6/34.6
34.6/34.6
38.5/40.5
44.2/47.1
48.9/52.5
63.2/69.1
13.6
16.7
20.9
25.0
28.7
16.3
18.8
23.0
27.1
30.8
14.0
17.1
21.3
25.4
29.1
16.7
19.2
23.4
27.5
31.2
44.4/ 44.4
44.4/ 44.4
55.1/ 61.2
74.5/ 83.6
94.4/106.5
110.6/125.2
50.4/ 50.4
50.4/ 50.4
59.9/ 65.4
79.3/ 87.8
99.2/110.7
115.4/129.4
31.7/31.7
32.8/35.4
38.5/42.0
57.5/64.0
70.6/79.0
37.7/37.7
37.7/39.6
43.3/46.2
62.3/68.2
75.4/83.2
32.6/32.6
33.7/36.3
39.4/42.9
58.4/64.9
71.5/79.9
38.6/38.6
38.6/40.5
44.2/47.1
63.2/69.1
76.3/84.1
15.2
16.7
25.0
28.7
42.3
17.9
18.8
27.1
30.8
44.4
40/40
40/45
50/50
60/70
70/80
80/90
45/45
45/50
60/60
60/70
70/80
80/90
35/35
35/35
40/40
45/45
45/50
60/70
40/35
40/40
45/45
50/50
50/60
70/70
35/35
35/35
40/40
45/45
50/50
60/70
40/40
40/40
45/45
50/50
60/60
70/70
20
20
25
25
30
20
25
25
30
35
20
20
25
30
30
20
25
25
30
35
60/ 60
60/ 60
60/ 70
80/ 90
100/110
125/150
60/ 60
60/ 60
60/ 70
80/ 90
100/125
125/150
40/40
40/40
45/45
60/70
80/80
40/40
45/45
50/50
70/70
80/90
40/40
40/40
45/45
60/70
80/80
45/45
45/45
50/50
70/70
80/90
20
20
25
30
45
20
25
30
35
45
35/35
35/37
43/47
52/58
60/67
70/79
41/41
41/42
49/52
58/63
65/71
76/83
29/29
29/29
32/34
37/40
41/45
55/60
34/34
34/34
37/39
43/45
47/50
60/65
30/30
30/30
33/35
38/41
42/46
56/62
35/35
35/35
38/40
44/46
48/51
61/66
14
14
15
24
27
20
20
20
29
32
15
15
15
24
28
20
20
20
29
32
44/ 44
44/ 44
52/ 58
70/ 79
88/100
103/117
50/ 50
50/ 50
58/ 63
76/ 83
94/104
109/122
33/33
33/34
37/40
55/60
67/74
38/38
38/39
43/45
60/65
72/79
34/34
34/35
38/41
56/62
68/75
39/39
39/40
44/46
61/66
73/80
16
16
18
27
40
21
21
21
32
44
135
135
135
135
135
135
140
140
140
140
140
140
124
124
124
124
124
124
129
129
129
129
129
129
154
154
154
154
154
154
158
158
158
158
158
158
63
63
63
63
63
67
68
68
68
68
77
77
77
77
77
82
82
82
82
82
173
173
173
173
173
173
178
178
178
178
178
178
140
140
140
140
140
145
145
145
145
145
170
170
170
170
170
174
174
174
174
174
70
71
71
71
71
75
75
75
75
75
Table 1B — Electrical Data (COBRA™ Energy Recovery 50HJ004-007 Units with 62AQ060) (cont)
UNIT
SIZE
50HJ005
(cont)
NOMINAL
V-PH-Hz
460-3-60
(cont)
208/230-1-60
IFM
TYPE
CONV
OUTLET
62AQ
FLA
NO
9.2
YES
9.2
NO
9.2
YES
9.2
NO
9.2
YES
9.2
NO
9.2
YES
9.2
NO
9.2
YES
9.2
HIGH
STD
STD
50HJ006
208/230-3-60
HIGH
460-3-60
FLA
HACR
IFM
LRA
MCA
MOCP
NEC
UL
—
—
—
—
—
—
—
—
STD
HEATER MODEL NO.
CRHEATER---A00
—
006
008
009
008+008
—
006
008
009
008+008
—
002
003
002+002
003+003
004+004
—
002
003
002+002
003+003
004+004
—
002
004
005
004+004
004+005
—
002
004
005
004+004
004+005
—
002
004
005
004+004
004+005
—
002
004
005
004+004
004+005
—
006
008
009
008+008
008+009
—
006
008
009
008+008
008+009
LEGEND
Full Load Amps
Heating, Air Conditioning and Refrigeration
Indoor (Evaporator) Fan Motor
Locked Rotor Amps
Minimum Circuit Amps
Maximum Overcurrent Protection
National Electrical Code
Underwriters’ Laboratories
ELECTRIC HEAT
Actual
FLA
kW†
—
—
7.2
7.2
13.8
13.8
16.8
16.8
27.7
27.7
—
—
7.2
7.2
13.8
13.8
16.8
16.8
27.7
27.7
— /—
— /—
4.9/ 5.8
23.5/27.1
6.5/ 8.0
31.4/36.3
8.7/11.6
46.9/54.2
13.0/16.0
62.8/72.5
15.8/19.3
75.8/87.5
— /—
— /—
4.9/ 5.8
23.5/27.1
6.5/ 8.0
31.4/36.3
8.7/11.6
46.9/54.2
13.0/16.0
62.8/72.5
15.8/19.3
75.8/87.5
— /—
— /—
4.9/ 5.8
13.6/15.6
7.9/ 9.6
21.9/25.3
12.0/14.7
33.4/38.5
15.8/19.3
43.8/50.5
19.9/24.3
55.2/63.8
— /—
— /—
4.9/ 5.8
13.6/15.6
7.9/ 9.6
21.9/25.3
12.0/14.7
33.4/38.5
15.8/19.3
43.8/50.5
19.9/24.3
55.2/63.8
— /—
— /—
4.9/ 5.8
13.6/15.6
7.9/ 9.6
21.9/25.3
12.0/14.7
33.4/38.5
15.8/19.3
43.8/50.5
19.9/24.3
55.2/63.8
— /—
— /—
4.9/ 5.8
13.6/15.6
7.9/ 9.6
21.9/25.3
12.0/14.7
33.4/38.5
15.8/19.3
43.8/50.5
19.9/24.3
55.2/63.8
—
—
5.5
7.2
10.6
13.8
12.9
16.8
21.1
27.7
23.4
30.1
—
—
5.5
7.2
10.6
13.8
12.9
16.8
21.1
27.7
23.4
30.1
POWER SUPPLY*
DISCONNECT SIZE
MCA
MOCP**
FLA
LRA
15.6
17.1
25.4
29.1
42.7
18.3
19.2
27.5
31.2
44.8
55.5/ 55.5
55.5/ 55.5
59.5/ 65.5
78.9/ 87.9
98.7/110.8
115.0/129.6
61.5/ 61.5
61.5/ 61.5
64.3/ 69.7
83.7/ 92.1
103.5/115.0
119.8/133.8
38.1/38.1
38.1/38.1
44.1/48.3
58.4/64.9
71.5/79.9
85.8/96.4
44.1/ 44.1
44.1/ 44.1
48.9/ 52.5
63.2/ 69.1
76.3/ 84.1
90.6/100.6
39.8/39.8
39.8/39.8
45.9/50.1
60.3/66.7
73.3/81.7
87.6/98.3
45.8/ 45.8
45.8/ 45.8
50.7/ 54.3
65.1/ 70.9
78.1/ 85.9
92.4/102.5
19.3
19.3
25.4
29.1
42.7
46.4
22.0
22.0
27.5
31.2
44.8
48.5
20
20
30
30
45
20
25
30
35
45
70/ 70
70/ 70
70/ 70
80/ 90
100/125
125/150
70/ 70
70/ 70
70/ 70
90/100
110/125
125/150
45/ 45
45/ 45
50/ 50
60/ 70
80/ 80
90/100
50/ 50
50/ 50
60/ 60
70/ 70
80/ 90
100/110
45/ 45
45/ 45
50/ 60
70/ 70
80/ 90
90/100
50/ 50
50/ 50
60/ 60
70/ 80
80/ 90
100/110
25
25
30
30
45
50
25
25
30
35
45
50
16
16
19
28
40
22
22
22
32
45
56/ 56
56/ 56
57/ 62
75/ 83
93/104
108/121
61/ 61
61/ 61
62/ 67
80/ 88
98/109
113/126
39/39
39/39
42/46
56/62
68/75
81/91
44/44
44/44
48/51
61/66
73/80
86/95
41/41
41/41
44/48
58/63
70/77
83/93
46/46
46/46
50/53
63/68
75/82
88/97
20
20
20
28
40
44
25
25
25
32
45
48
84
85
85
85
85
89
90
90
90
90
250
250
250
250
250
250
255
255
255
255
255
255
202
202
202
202
202
202
207
207
207
207
207
207
221
221
221
221
221
221
226
226
226
226
226
226
101
101
101
101
101
101
106
106
106
106
106
106
Example: Supply voltage is 460-3-60.
AB = 452 v
BC = 464 v
AC = 455 v
Average Voltage =
452 + 464 + 455
3
1371
3
= 457
=
*The values listed in this table do not include power exhaust. See Power Exhaust
table for requirements.
†Heater capacity (kW) is based on heater voltage of 240v or 480v. If power distribution voltage to unit varies from rated, heater kW will vary accordingly.
**Fuse or HACR breaker.
NOTES:
1. In compliance with NEC requirements for multimotor and combination load
equipment (refer to NEC Articles 430 and 440), the overcurrent protective device
for the unit shall be fuse or HACR breaker. UL, Canada units may be fuse or circuit breaker.
2. Unbalanced 3-Phase Supply Voltage
Never operate a motor where a phase imbalance in supply voltage is greater
than 2%. Use the following formula to determine the percent of voltage
imbalance.
max voltage deviation from average voltage
= 100 x
average voltage
Determine maximum deviation from average voltage.
(AB) 457 – 452 = 5 v
(BC) 464 – 457 = 7 v
(AC) 457 – 455 = 2 v
Maximum deviation is 7 v.
Determine percent of voltage imbalance.
7
% Voltage Imbalance= 100 x
457
= 1.53%
This amount of phase imbalance is satisfactory as it is below the maximum
allowable 2%.
IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact
your local electric utility company immediately.
27
Table 1B — Electrical Data (COBRA™ Energy Recovery 50HJ004-007 Units with 62AQ060) (cont)
UNIT
SIZE
50HJ006
(cont)
NOMINAL
V-PH-Hz
460-3-60
(cont)
208/230-3-60
208/230-3-60
IFM
TYPE
CONV
OUTLET
62AQ
FLA
NO
9.2
YES
9.2
NO
9.2
YES
9.2
NO
9.2
YES
9.2
NO
9.2
YES
9.2
NO
9.2
YES
9.2
HIGH
STD
HIGH
50HJ007
STD
460-3-60
HIGH
FLA
HACR
IFM
LRA
MCA
MOCP
NEC
UL
—
—
—
—
—
—
—
—
HEATER MODEL NO.
CRHEATER---A00
—
006
008
009
008+008
008+009
—
006
008
009
008+008
008+009
—
002
004
005
004+004
004+005
—
002
004
005
004+004
004+005
—
002
004
005
004+004
004+005
—
002
004
005
004+004
004+005
—
006
008
009
008+008
008+009
—
006
008
009
008+008
008+009
—
006
008
009
008+008
008+009
—
006
008
009
008+008
008+009
LEGEND
Full Load Amps
Heating, Air Conditioning and Refrigeration
Indoor (Evaporator) Fan Motor
Locked Rotor Amps
Minimum Circuit Amps
Maximum Overcurrent Protection
National Electrical Code
Underwriters’ Laboratories
ELECTRIC HEAT
Actual
FLA
kW†
—
—
5.5
7.2
10.6
13.8
12.9
16.8
21.1
27.7
23.4
30.1
—
—
5.5
7.2
10.6
13.8
12.9
16.8
21.1
27.7
23.4
30.1
— /—
— /—
4.9/ 5.8
13.6/15.6
7.9/ 9.6
21.9/25.3
12.0/14.7
33.4/38.5
15.8/19.3
43.8/50.5
19.9/24.3
55.2/63.8
— /—
— /—
4.9/ 5.8
13.6/15.6
7.9/ 9.6
21.9/25.3
12.0/14.7
33.4/38.5
15.8/19.3
43.8/50.5
19.9/24.3
55.2/63.8
— /—
— /—
4.9/ 5.8
13.6/15.6
7.9/ 9.6
21.9/25.3
12.0/14.7
33.4/38.5
15.8/19.3
43.8/50.5
19.9/24.3
55.2/63.8
— /—
— /—
4.9/ 5.8
13.6/15.6
7.9/ 9.6
21.9/25.3
12.0/14.7
33.4/38.5
15.8/19.3
43.8/50.5
19.9/24.3
55.2/63.8
—
—
5.5
7.2
10.6
13.8
12.9
16.8
21.1
27.7
23.4
30.7
—
—
5.5
7.2
10.6
13.8
12.9
16.8
21.1
27.7
23.4
30.7
—
—
5.5
7.2
10.6
13.8
12.9
16.8
21.1
27.7
23.4
30.7
—
—
5.5
7.2
10.6
13.8
12.9
16.8
21.1
27.7
23.4
30.7
POWER SUPPLY*
DISCONNECT SIZE
MCA
MOCP**
FLA
LRA
20.1
20.1
26.2
29.9
43.5
47.2
22.8
22.8
28.3
32.0
45.6
49.3
42.0/42.0
42.0/42.0
44.1/48.3
58.4/64.9
71.5/79.9
85.8/96.4
48.0/ 48.0
48.0/ 48.0
48.9/ 52.5
63.2/ 69.1
76.3/ 84.1
90.6/100.6
43.7/43.7
43.7/43.7
45.9/50.1
60.3/66.7
73.3/81.7
87.6/98.3
49.7/ 49.7
49.7/ 49.7
50.7/ 54.3
65.1/ 70.9
78.1/ 85.9
92.4/102.5
19.8
19.8
25.4
29.1
42.7
46.4
22.5
22.5
27.5
31.2
44.8
48.5
20.6
20.6
26.2
29.9
43.5
47.2
23.3
23.3
28.3
32.0
45.6
49.3
25
25
30
30
45
50
25
25
30
35
50
50
50/ 50
50/ 50
50/ 50
60/ 70
80/ 80
90/100
60/ 60
60/ 60
60/ 60
70/ 70
80/ 90
100/110
50/ 50
50/ 50
50/ 60
70/ 70
80/ 90
90/100
60/ 60
60/ 60
60/ 60
70/ 80
80/ 90
100/110
25
25
30
30
45
50
25
25
30
35
45
50
25
25
30
30
45
50
30
30
30
35
50
50
20
20
20
29
41
44
26
26
26
33
46
49
42/42
42/42
42/46
56/62
68/75
81/91
48/48
48/48
48/51
61/66
73/80
86/95
44/44
44/44
44/48
58/63
70/77
83/93
50/50
50/50
50/53
63/68
75/82
88/97
20
20
20
28
40
44
26
26
26
32
45
48
21
21
21
29
41
44
26
26
26
33
46
49
110
111
111
111
111
111
115
116
116
116
116
116
234
234
234
234
234
234
239
239
239
239
239
239
253
253
253
253
253
253
258
258
258
258
258
258
114
114
114
114
114
114
118
119
119
119
119
119
123
124
124
124
124
124
128
128
128
128
128
128
Example: Supply voltage is 460-3-60.
AB = 452 v
BC = 464 v
AC = 455 v
Average Voltage =
452 + 464 + 455
3
1371
3
= 457
=
*The values listed in this table do not include power exhaust. See Power Exhaust
table for requirements.
†Heater capacity (kW) is based on heater voltage of 240v or 480v. If power distribution voltage to unit varies from rated, heater kW will vary accordingly.
**Fuse or HACR breaker.
NOTES:
1. In compliance with NEC requirements for multimotor and combination load
equipment (refer to NEC Articles 430 and 440), the overcurrent protective device
for the unit shall be fuse or HACR breaker. UL, Canada units may be fuse or circuit breaker.
2. Unbalanced 3-Phase Supply Voltage
Never operate a motor where a phase imbalance in supply voltage is greater
than 2%. Use the following formula to determine the percent of voltage
imbalance.
max voltage deviation from average voltage
= 100 x
average voltage
Determine maximum deviation from average voltage.
(AB) 457 – 452 = 5 v
(BC) 464 – 457 = 7 v
(AC) 457 – 455 = 2 v
Maximum deviation is 7 v.
Determine percent of voltage imbalance.
7
% Voltage Imbalance= 100 x
457
= 1.53%
This amount of phase imbalance is satisfactory as it is below the maximum
allowable 2%.
IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact
your local electric utility company immediately.
28
Table 1C — Electrical Data (COBRA™ Energy Recovery 48HJ004-007 Units with 62AQ100)
UNIT
SIZE
NOMINAL
V-PH-Hz
IFM
TYPE
208/230-1-60
STD
STD
208/230-3-60
HIGH
48HJ004
STD
460-3-60
HIGH
208/230-1-60
STD
STD
208/230-3-60
48HJ005
HIGH
STD
460-3-60
HIGH
208/230-1-60
STD
STD
208/230-3-60
48HJ006
HIGH
STD
460-3-60
HIGH
STD
208/230-3-60
HIGH
48HJ007
STD
460-3-60
HIGH
FLA —
HACR —
IFM —
LRA —
MCA —
MOCP —
NEC —
UL
—
CONV
OUTLET
62AQ
FLA
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
15.1
15.1
15.1
15.1
15.1
15.1
15.1
15.1
15.1
15.1
15.1
15.1
15.1
15.1
15.1
15.1
15.1
15.1
15.1
15.1
15.1
15.1
15.1
15.1
15.1
15.1
15.1
15.1
15.1
15.1
15.1
15.1
15.1
15.1
15.1
15.1
15.1
15.1
LEGEND
Full Load Amps
Heating, Air Conditioning and Refrigeration
Indoor (Evaporator) Fan Motor
Locked Rotor Amps
Minimum Circuit Amps
Maximum Overcurrent Protection
National Electrical Code
Underwriters Laboratories
POWER SUPPLY*
MCA
MOCP†
40.7/40.7
45/45
46.7/46.7
50/50
33.6/33.6
40/40
39.6/39.6
45/45
34.5/34.5
40/40
40.5/40.5
45/45
16.5
20
19.2
20
16.9
20
19.6
25
50.3/50.3
60/60
56.3/56.3
70/70
37.6/37.6
45/45
43.6/43.6
50/50
38.5/38.5
45/45
44.5/44.5
50/50
18.2
20
20.9
25
18.6
25
21.3
25
59.2/59.2
70/70
65.2/65.2
80/80
44.0/44.0
50/50
50.0/50.0
60/60
45.7/45.7
60/60
51.7/51.7
60/60
22.2
25
24.9
30
23.0
30
25.7
30
47.9/47.9
60/60
53.9/53.9
60/60
49.6/49.6
60/60
55.6/55.6
60/60
22.8
30
25.5
30
23.6
30
26.3
30
DISCONNECT SIZE
FLA
LRA
42/42
161/161
48/48
166/166
36/36
150/150
41/41
155/155
37/37
180/180
42/42
184/184
18
76
20
78
18
90
20
93
51/51
199/199
57/57
204/204
39/39
166/166
45/45
171/171
40/40
196/196
46/46
200/200
19
84
22
86
19
98
22
100
60/60
266/266
65/65
270/270
46/46
228/228
51/51
233/233
48/48
247/247
53/53
252/252
23
114
25
117
24
124
26
126
49/49
260/260
55/55
265/265
51/51
279/279
57/57
284/284
23
127
26
129
24
137
27
139
Example: Supply voltage is 460-3-60.
AB = 452 v
BC = 464 v
AC = 455 v
452 + 464 + 455
Average Voltage =
3
=
*The values listed in this table do not include power exhaust. See
Power Exhaust table for requirements.
†Fuse or HACR breaker.
1371
3
= 457
Determine maximum deviation from average voltage.
(AB) 457 – 452 = 5 v
(BC) 464 – 457 = 7 v
(AC) 457 – 455 = 2 v
Maximum deviation is 7 v.
Determine percent of voltage imbalance.
7
% Voltage Imbalance = 100 x
457
= 1.53%
This amount of phase imbalance is satisfactory as it is below the
maximum allowable 2%.
NOTES:
1. In compliance with NEC requirements for multimotor and combination load equipment (refer to NEC Articles 430 and 440), the
overcurrent protective device for the unit shall be fuse or HACR
breaker. UL, Canada units may be fuse or circuit breaker.
2. Unbalanced 3-Phase Supply Voltage
Never operate a motor where a phase imbalance in supply voltage is greater than 2%. Use the following formula to determine
the percent of voltage imbalance.
max voltage deviation from average voltage
= 100 x
average voltage
IMPORTANT: If the supply voltage phase imbalance is more than
2%, contact your local electric utility company immediately.
29
Table 1D — Electrical Data (COBRA™ Energy Recovery 50HJ004-007 Units with 62AQ100)
UNIT
SIZE
NOMINAL
V-PH-Hz
208/230-1-60
IFM
TYPE
CONV
OUTLET
62AQ
FLA
NO
15.1
YES
15.1
NO
15.1
YES
15.1
NO
15.1
YES
15.1
NO
15.1
YES
15.1
NO
15.1
YES
15.1
NO
15.1
YES
15.1
NO
15.1
YES
15.1
NO
15.1
YES
15.1
NO
15.1
YES
15.1
STD
STD
208/230-3-60
50HJ004
HIGH
STD
460-3-60
HIGH
208/230-1-60
STD
STD
50HJ005
208/230-3-60
HIGH
460-3-60
STD
HEATER MODEL NO.
CRHEATER---A00
—
001
002
003
004
002+002
—
001
002
003
004
002+002
—
001
002
003
004
005
—
001
002
003
004
005
—
001
002
003
004
005
—
001
002
003
004
005
—
006
007
008
009
—
006
007
008
009
—
006
007
008
009
—
006
007
008
009
—
001
003
002+002
003+003
004+004
—
001
003
002+002
003+003
004+004
—
002
003
005
004+004
—
002
003
005
004+004
—
002
003
005
004+004
—
002
003
005
004+004
—
006
008
009
008+008
—
006
008
009
008+008
30
ELECTRIC HEAT
Actual
FLA
kW†
— /—
— /—
3.3/ 4.0
15.9/18.3
4.9/ 5.8
23.5/27.1
6.5/ 8.0
31.4/36.3
7.9/ 9.6
37.9/43.1
9.8/11.6
46.9/54.2
— /—
— /—
3.3/ 4.0
15.9/18.3
4.9/ 5.8
23.5/27.1
6.5/ 8.0
31.4/36.3
7.9/ 9.6
37.9/43.1
9.8/11.6
46.9/54.2
— /—
— /—
3.3/ 4.0
15.9/18.3
4.9/ 5.8
23.5/27.1
6.5/ 8.0
31.4/36.3
7.9/ 9.6
37.9/43.1
12.0/14.7
33.4/38.5
— /—
— /—
3.3/ 4.0
15.9/18.3
4.9/ 5.8
23.5/27.1
6.5/ 8.0
31.4/36.3
7.9/ 9.6
37.9/43.1
12.0/14.7
33.4/38.5
— /—
— /—
3.3/ 4.0
15.9/18.3
4.9/ 5.8
23.5/27.1
6.5/ 8.0
31.4/36.3
7.9/ 9.6
37.9/43.1
12.0/14.7
33.4/38.5
— /—
— /—
3.3/ 4.0
15.9/18.3
4.9/ 5.8
23.5/27.1
6.5/ 8.0
31.4/36.3
7.9/ 9.6
37.9/43.1
12.0/14.7
33.4/38.5
—
—
5.5
7.2
8.1
13.8
10.6
16.8
12.9
27.7
—
—
5.5
7.2
8.1
13.8
10.6
16.8
12.9
27.7
—
—
5.5
7.2
8.1
13.8
10.6
16.8
12.9
27.7
—
—
5.5
7.2
8.1
13.8
10.6
16.8
12.9
27.7
— /—
— /—
3.3/ 4.0
15.9/18.3
6.5/ 8.0
31.4/36.3
9.8/11.6
46.9/54.2
13.1/16.0
62.8/72.5
16.0/19.3
75.8/87.5
— /—
— /—
3.3/ 4.0
15.9/18.3
6.5/ 8.0
31.4/36.3
9.8/11.6
46.9/54.2
13.1/16.0
62.8/72.5
16.0/19.3
75.8/87.5
— /—
— /—
4.9/ 5.8
13.6/15.6
6.5/ 8.0
18.1/20.9
12.0/14.7
33.4/38.5
16.0/19.3
43.8/50.5
— /—
— /—
4.9/ 5.8
13.6/15.6
6.5/ 8.0
18.1/20.9
12.0/14.7
33.4/38.5
16.0/19.3
43.8/50.5
— /—
— /—
4.9/ 5.8
13.6/15.6
6.5/ 8.0
18.1/20.9
12.0/14.7
33.4/38.5
16.0/19.3
43.8/50.5
— /—
— /—
4.9/ 5.8
13.6/15.6
6.5/ 8.0
18.1/20.9
12.0/14.7
33.4/38.5
16.0/19.3
43.8/50.5
—
—
5.5
7.2
10.6
13.8
12.9
16.8
21.1
27.7
—
—
5.5
7.2
10.6
13.8
12.9
16.8
21.1
27.7
POWER SUPPLY*
DISCONNECT SIZE
MCA
MOCP**
FLA
LRA
40.7/40.7
42.5/45.5
52.0/56.5
61.9/67.9
70.0/77.3
81.3/90.3
46.7/46.7
47.3/49.7
56.8/60.7
66.7/72.1
74.8/81.5
86.1/94.5
33.6/33.6
34.1/35.9
39.6/42.2
45.3/48.8
50.0/54.2
64.3/70.7
39.6/39.6
39.6/40.1
44.4/46.4
50.1/53.0
54.8/58.4
69.1/74.9
34.5/34.5
35.0/36.8
40.5/43.1
46.2/49.7
50.9/55.1
65.2/71.6
40.5/40.5
40.5/41.0
45.3/47.3
51.0/53.9
55.7/59.3
70.0/75.8
16.5
20.1
24.3
28.4
32.1
19.2
22.2
26.4
30.5
34.2
16.9
20.5
24.7
28.8
32.5
19.6
22.6
26.8
30.9
34.6
50.3/ 50.3
50.3/ 50.3
61.9/ 67.9
81.3/ 90.3
101.2/113.3
117.4/132.0
56.3/ 56.3
56.3/ 56.3
66.7/ 72.1
86.1/ 94.5
106.0/117.5
122.2/136.2
37.6/37.6
39.6/42.2
45.3/48.8
64.3/70.7
77.3/85.8
43.6/43.6
44.4/46.4
50.1/53.0
69.1/74.9
82.1/90.0
38.5/38.5
40.5/43.1
46.2/49.7
65.2/71.6
78.2/86.7
44.5/44.5
45.3/47.3
51.0/53.9
70.0/75.8
83.0/90.9
18.2
20.1
28.4
32.1
45.6
20.9
22.2
30.5
34.2
47.7
45/ 45
50/ 60
60/ 70
70/ 70
80/ 80
90/100
50/ 50
60/ 60
70/ 70
70/ 80
80/ 90
90/100
40/40
45/45
50/50
60/60
60/60
70/80
45/45
50/50
60/60
60/60
60/70
80/80
40/40
45/45
50/50
60/60
60/60
70/80
45/45
50/50
60/60
60/60
70/70
80/80
20
25
30
35
35
20
30
30
35
40
20
25
30
35
35
25
30
30
35
40
60/ 60
60/ 60
70/ 70
90/100
110/125
125/150
70/ 70
70/ 70
70/ 80
90/100
110/125
125/150
45/45
50/50
60/60
70/80
80/90
50/50
60/60
60/60
80/80
90/90
45/45
50/50
60/60
70/80
80/90
50/ 50
60/ 60
60/ 60
80/ 80
90/100
20
25
35
30
50
25
30
35
40
50
42/42
42/44
50/54
59/65
67/73
77/85
48/48
48/49
56/59
65/70
72/78
82/90
36/36
36/36
39/41
44/47
48/52
61/67
41/41
41/41
44/46
49/52
54/57
67/72
37/37
37/37
40/42
45/48
49/53
62/68
42/42
42/42
45/47
50/53
55/58
68/73
18
18
18
27
31
23
23
23
32
35
18
18
18
28
31
24
24
24
32
36
51/ 51
51/ 51
59/ 65
77/ 85
95/106
110/124
57/ 57
57/ 57
65/ 70
82/ 90
101/111
116/128
39/39
39/41
44/47
61/67
73/81
45/45
45/46
49/52
67/72
79/86
40/40
40/42
45/48
62/68
74/82
46/46
46/47
50/53
68/73
80/87
19
19
19
31
43
25
25
25
35
48
161
161
161
161
161
161
166
166
166
166
166
166
150
150
150
150
150
150
155
155
155
155
155
155
180
180
180
180
180
180
184
184
184
184
184
184
76
76
77
80
83
80
81
81
82
85
90
90
91
94
97
95
95
95
96
99
199
199
199
199
199
199
204
204
204
204
204
204
166
166
166
166
166
171
171
171
171
171
196
196
196
196
196
200
200
200
200
200
83
84
84
84
94
88
88
88
88
96
Table 1D — Electrical Data (COBRA™ Energy Recovery 50HJ004-007 Units with 62AQ100) (cont)
UNIT
SIZE
50HJ005
(cont)
NOMINAL
V-PH-Hz
460-3-60
(cont)
208/230-1-60
IFM
TYPE
CONV
OUTLET
62AQ
FLA
NO
15.1
YES
15.1
NO
15.1
YES
15.1
NO
15.1
YES
15.1
NO
15.1
YES
15.1
NO
15.1
YES
15.1
HIGH
STD
STD
50HJ006
208/230-3-60
HIGH
460-3-60
FLA
HACR
IFM
LRA
MCA
MOCP
NEC
UL
—
—
—
—
—
—
—
—
STD
HEATER MODEL NO.
CRHEATER---A00
—
006
008
009
008+008
—
006
008
009
008+008
—
002
003
002+002
003+003
004+004
—
002
003
002+002
003+003
004+004
—
002
004
005
004+004
004+005
—
002
004
005
004+004
004+005
—
002
004
005
004+004
004+005
—
002
004
005
004+004
004+005
—
006
008
009
008+008
008+009
—
006
008
009
008+008
008+009
LEGEND
Full Load Amps
Heating, Air Conditioning and Refrigeration
Indoor (Evaporator) Fan Motor
Locked Rotor Amps
Minimum Circuit Amps
Maximum Overcurrent Protection
National Electrical Code
Underwriters’ Laboratories
ELECTRIC HEAT
Actual
FLA
kW†
—
—
5.5
7.2
10.6
13.8
12.9
16.8
21.1
27.7
—
—
5.5
7.2
10.6
13.8
12.9
16.8
21.1
27.7
— /—
— /—
4.9 5.8
23.5/27.1
6.5/ 8.0
31.4/36.3
8.7/11.6
46.9/54.2
13.0/16.0
62.8/72.5
15.8/19.3
75.8/87.5
— /—
— /—
4.9/ 5.8
23.5/27.1
6.5 /8.0
31.4/36.3
8.7/11.6
46.9/54.2
13.0/16.0
62.8/72.5
15.8/19.3
75.8/87.5
— /—
— /—
4.9/ 5.8
13.6/15.6
7.9/ 9.6
21.9/25.3
12.0/14.7
33.4/38.5
15.8/19.3
43.8/50.5
19.9/24.3
55.2/63.8
— /—
— /—
4.9/ 5.8
13.6/15.6
7.9/ 9.6
21.9/25.3
12.0/14.7
33.4/38.5
15.8/19.3
43.8/50.5
19.9/24.3
55.2/63.8
— /—
— /—
4.9/ 5.8
13.6/15.6
7.9/ 9.6
21.9/25.3
12.0/14.7
33.4/38.5
15.8/19.3
43.8/50.5
19.9/24.3
55.2/63.8
— /—
— /—
4.9/ 5.8
13.6/15.6
7.9/ 9.6
21.9/25.3
12.0/14.7
33.4/38.5
15.8/19.3
43.8/50.5
19.9/24.3
55.2/63.8
—
—
5.5
7.2
10.6
13.8
12.9
16.8
21.1
27.7
23.4
30.1
—
—
5.5
7.2
10.6
13.8
12.9
16.8
21.1
27.7
23.4
30.1
POWER SUPPLY*
DISCONNECT SIZE
MCA
MOCP**
FLA
LRA
18.6
20.5
28.8
32.5
46.0
21.3
22.6
30.9
34.6
48.1
61.4/ 61.4
61.4/ 61.4
65.8/ 71.8
85.2/ 94.2
105.1/117.2
121.3/135.9
67.4/ 67.4
67.4/ 67.4
70.6/ 76.0
90.0/ 98.4
109.9/121.4
126.1/140.1
44.0/ 44.0
44.0/ 44.0
50.9/ 55.1
65.2/ 71.6
78.2/ 86.7
92.6/103.2
50.0/ 50.0
50.0/ 50.0
55.7/ 59.3
70.0/ 75.8
83.0/ 90.9
97.4/107.4
45.7/ 45.7
45.7/ 45.7
52.6/ 56.8
66.9/ 73.3
79.9/ 88.4
94.3/104.9
51.7/ 51.7
51.7/ 51.7
57.4 61.0
71.7/ 77.5
84.7/ 92.6
99.1/109.1
22.2
22.2
28.8
32.5
46.0
49.8
24.9
24.9
30.9
34.6
48.1
51.9
25
25
35
35
50
25
30
35
40
50
70/ 70
70/ 70
70/ 80
90/100
110/125
125/150
80/ 80
80/ 80
80/ 80
90/100
110/125
150/150
50/ 50
50/ 50
60/ 60
70/ 80
80/ 90
100/110
60/ 60
60/ 60
70/ 70
80/ 80
90/100
100/110
60/ 60
60/ 60
60/ 70
70/ 80
80/ 90
100/110
60/ 60
60/ 60
70/ 70
80/ 80
90/100
100/104
25
25
35
35
50
50
30
30
35
40
50
60
19
19
19
31
43
25
25
25
36
48
62/ 62
62/ 62
64/ 69
81/ 90
100/111
115/128
68/ 68
68/ 68
69/ 74
87/ 95
105/116
120/133
46/46
46/46
49/53
62/68
74/82
88/97
51/ 51
51/ 51
55/ 58
68/ 73
80/ 87
93/102
48/48
48/48
51/55
64/70
76/84
90/99
53/ 53
53/ 53
57/ 60
70/ 75
82/ 89
95/104
23
23
23
31
43
47
28
28
28
36
48
52
97
98
98
98
108
102
103
103
103
110
276
276
276
276
276
276
281
281
281
281
281
281
228
228
228
228
228
228
233
233
233
233
233
233
247
247
247
247
247
247
252
252
252
252
252
252
114
114
114
114
114
114
119
119
119
119
119
119
Example: Supply voltage is 460-3-60.
AB = 452 v
BC = 464 v
AC = 455 v
Average Voltage =
452 + 464 + 455
3
1371
3
= 457
=
*The values listed in this table do not include power exhaust. See Power Exhaust
table for requirements.
†Heater capacity (kW) is based on heater voltage of 240v or 480v. If power distribution voltage to unit varies from rated, heater kW will vary accordingly.
**Fuse or HACR breaker.
NOTES:
1. In compliance with NEC requirements for multimotor and combination load
equipment (refer to NEC Articles 430 and 440), the overcurrent protective device
for the unit shall be fuse or HACR breaker. UL, Canada units may be fuse or circuit breaker.
2. Unbalanced 3-Phase Supply Voltage
Never operate a motor where a phase imbalance in supply voltage is greater
than 2%. Use the following formula to determine the percent of voltage
imbalance.
max voltage deviation from average voltage
= 100 x
average voltage
Determine maximum deviation from average voltage.
(AB) 457 – 452 = 5 v
(BC) 464 – 457 = 7 v
(AC) 457 – 455 = 2 v
Maximum deviation is 7 v.
Determine percent of voltage imbalance.
7
% Voltage Imbalance= 100 x
457
= 1.53%
This amount of phase imbalance is satisfactory as it is below the maximum
allowable 2%.
IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact
your local electric utility company immediately.
31
Table 1D — Electrical Data (COBRA™ Energy Recovery 50HJ004-007 Units with 62AQ100) (cont)
UNIT
SIZE
50HJ006
(cont)
NOMINAL
V-PH-Hz
460-3-60
(cont)
IFM
TYPE
CONV
OUTLET
62AQ
FLA
NO
15.1
YES
15.1
NO
15.1
YES
15.1
NO
15.1
YES
15.1
NO
15.1
YES
15.1
NO
15.1
YES
15.1
HIGH
STD
208/230-3-60
HIGH
50HJ007
STD
460-3-60
HIGH
FLA
HACR
IFM
LRA
MCA
MOCP
NEC
UL
—
—
—
—
—
—
—
—
HEATER MODEL NO.
CRHEATER---A00
—
006
008
009
008+008
008+009
—
006
008
009
008+008
008+009
—
002
004
005
004+004
004+005
—
002
004
005
004+004
004+005
—
002
004
005
004+004
004+005
—
002
004
005
004+004
004+005
—
006
008
009
008+008
008+009
—
006
008
009
008+008
008+009
—
006
008
009
008+008
008+009
—
006
008
009
008+008
008+009
LEGEND
Full Load Amps
Heating, Air Conditioning and Refrigeration
Indoor (Evaporator) Fan Motor
Locked Rotor Amps
Minimum Circuit Amps
Maximum Overcurrent Protection
National Electrical Code
Underwriters’ Laboratories
ELECTRIC HEAT
Actual
FLA
kW†
—
—
5.5
7.2
10.6
13.8
12.9
16.8
21.1
27.7
23.4
30.1
—
—
5.5
7.2
10.6
13.8
12.9
16.8
21.1
27.7
23.4
30.1
— /—
— /—
4.9/ 5.8
13.6/15.6
7.9/ 9.6
21.9/25.3
12.0/14.7
33.4/38.5
15.8/19.3
43.8/50.5
19.9/24.3
55.2/63.8
— /—
— /—
4.9/ 5.8
13.6/15.6
7.9/ 9.6
21.9/25.3
12.0/14.7
33.4/38.5
15.8/19.3
43.8/50.5
19.9/24.3
55.2/63.8
— /—
— /—
4.9/ 5.8
13.6/15.6
7.9/ 9.6
21.9/25.3
12.0/14.7
33.4/38.5
15.8/19.3
43.8/50.5
19.9/24.3
55.2/63.8
— /—
— /—
4.9/ 5.8
13.6/15.6
7.9/ 9.6
21.9/25.3
12.0/14.7
33.4/38.5
15.8/19.3
43.8/50.5
19.9/24.3
55.2/63.8
—
—
5.5
7.2
10.6
13.8
12.9
16.8
21.1
27.7
23.4
30.7
—
—
5.5
7.2
10.6
13.8
12.9
16.8
21.1
27.7
23.4
30.7
—
—
5.5
7.2
10.6
13.8
12.9
16.8
21.1
27.7
23.4
30.7
—
—
5.5
7.2
10.6
13.8
12.9
16.8
21.1
27.7
23.4
30.7
POWER SUPPLY*
DISCONNECT SIZE
MCA
MOCP**
FLA
LRA
23.0
23.0
29.6
33.3
46.8
50.6
25.7
25.7
31.7
35.4
48.9
52.7
47.9/ 47.9
47.9/ 47.9
50.9/ 55.1
65.2/ 71.6
78.2/ 86.7
92.6/103.2
53.9/ 53.9
53.9/ 53.9
55.7/ 59.3
70.0/ 75.8
83.0/ 90.9
97.4/107.4
49.6/ 49.6
49.6/ 49.6
52.6/ 56.8
66.9/ 73.3
79.9/ 88.4
94.3/104.9
55.6/ 55.6
55.6/ 55.6
57.4/ 61.0
71.7/ 77.5
84.7/ 92.6
99.1/109.1
22.8
22.8
28.8
32.5
46.0
49.8
25.5
25.5
30.9
34.6
48.1
51.9
23.6
23.6
29.6
33.3
46.8
50.6
26.3
26.3
31.7
35.4
48.9
52.7
30
30
35
35
50
60
30
30
35
40
50
60
60/ 60
60/ 60
60/ 60
70/ 80
80/ 90
100/110
60/ 60
60/ 60
70/ 70
80/ 80
90/100
100/110
60/ 60
60/ 60
60/ 70
70/ 80
80/ 90
100/110
60/ 60
60/ 60
70/ 70
80/ 80
90/100
100/110
30
30
35
35
50
50
30
30
35
40
50
60
30
30
35
35
50
60
30
30
35
40
50
60
24
24
24
32
44
48
29
29
29
37
49
53
49/49
49/49
49/53
62/68
74/82
88/97
55/ 55
55/ 55
55/ 58
68/ 73
80/ 87
93/102
51/51
51/51
51/55
64/70
76/84
90/99
57/ 57
57/ 57
57/ 60
70/ 75
82/ 89
95/104
23
23
23
31
43
47
29
29
29
36
48
52
24
24
24
32
44
48
30
30
30
37
49
53
123
124
124
124
124
124
128
129
129
129
129
129
260
260
260
260
260
260
265
265
265
265
265
265
279
279
279
279
279
279
284
284
284
284
284
284
127
127
127
127
127
127
131
132
132
132
132
132
136
137
137
137
137
137
141
141
141
141
141
141
Example: Supply voltage is 460-3-60.
AB = 452 v
BC = 464 v
AC = 455 v
Average Voltage =
452 + 464 + 455
3
1371
3
= 457
=
*The values listed in this table do not include power exhaust. See Power Exhaust
table for requirements.
†Heater capacity (kW) is based on heater voltage of 240v or 480v. If power distribution voltage to unit varies from rated, heater kW will vary accordingly.
**Fuse or HACR breaker.
NOTES:
1. In compliance with NEC requirements for multimotor and combination load
equipment (refer to NEC Articles 430 and 440), the overcurrent protective device
for the unit shall be fuse or HACR breaker. UL, Canada units may be fuse or circuit breaker.
2. Unbalanced 3-Phase Supply Voltage
Never operate a motor where a phase imbalance in supply voltage is greater
than 2%. Use the following formula to determine the percent of voltage
imbalance.
max voltage deviation from average voltage
= 100 x
average voltage
Determine maximum deviation from average voltage.
(AB) 457 – 452 = 5 v
(BC) 464 – 457 = 7 v
(AC) 457 – 455 = 2 v
Maximum deviation is 7 v.
Determine percent of voltage imbalance.
7
% Voltage Imbalance= 100 x
457
= 1.53%
This amount of phase imbalance is satisfactory as it is below the maximum
allowable 2%.
IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact
your local electric utility company immediately.
32
Table 1E — Electrical Data (COBRA™ Energy Recovery 48HJ008-014 Units with 62AQ200)
UNIT
SIZE
NOMINAL
V-PH-HZ
IFM
TYPE
STD
208/230-3-60
HIGH
48HJ008
STD
460-3-60
HIGH
STD
208/230-3-60
HIGH
48HJ009
STD
460-3-60
HIGH
STD
208/230-3-60
HIGH
48HJ012
STD
460-3-60
HIGH
208/230-3-60
STD
460-3-60
STD
48HJ014
FLA —
HACR —
IFM —
LRA —
MCA —
MOCP —
NEC —
UL
—
CONV
OUTLET
62AQ
FLA
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
21.9
21.9
21.9
21.9
10.2
10.2
10.2
10.2
21.9
21.9
21.9
21.9
10.2
10.2
10.2
10.2
21.9
21.9
21.9
21.9
10.2
10.2
10.2
10.2
21.9
21.9
10.2
10.2
LEGEND
Full Load Amps
Heating, Air Conditioning and Refrigeration
Indoor (Evaporator) Fan Motor
Locked Rotor Amps
Minimum Circuit Amps
Maximum Overcurrent Protection
National Electrical Code
Underwriters’ Laboratories
POWER SUPPLY*
MCA
MOCP†
60.1
70
66.1
70
63.2
70
69.2
80
29.4
35
32.1
35
30.8
35
33.5
35
62.1
70
68.1
70
65.2
70
71.2
80
31.7
35
34.4
40
33.1
35
35.8
40
74.9
80
80.9
90
79.3
90
85.3
90
35.1
40
37.8
45
37.7
40
40.4
45
82.5
90
88.5
100
39.3
45
42.0
50
DISCONNECT SIZE
FLA
LRA
66
366
71
371
69
391
75
395
32
184
34
186
34
197
36
199
68
400
73
405
71
425
77
429
34
206
37
208
36
219
38
221
81
465
87
469
86
488
92
493
38
234
40
236
41
245
43
247
89
550
95
555
43
270
45
272
Example: Supply voltage is 460-3-60.
AB = 452 v
BC = 464 v
AC = 455 v
452 + 464 + 455
Average Voltage =
3
=
*The values listed in this table do not include power exhaust. See
Power Exhaust table for requirements.
†Fuse or HACR breaker.
1371
3
= 457
Determine maximum deviation from average voltage.
(AB) 457 – 452 = 5 v
(BC) 464 – 457 = 7 v
(AC) 457 – 455 = 2 v
Maximum deviation is 7 v.
Determine percent of voltage imbalance.
7
% Voltage Imbalance = 100 x
457
= 1.53%
This amount of phase imbalance is satisfactory as it is below the
maximum allowable 2%.
NOTES:
1. In compliance with NEC requirements for multimotor and combination load equipment (refer to NEC Articles 430 and 440), the
overcurrent protective device for the unit shall be fuse or HACR
breaker. UL, Canada units may be fuse or circuit breaker.
2. Unbalanced 3-Phase Supply Voltage
Never operate a motor where a phase imbalance in supply voltage is greater than 2%. Use the following formula to determine
the percent of voltage imbalance.
max voltage deviation from average voltage
= 100 x
average voltage
IMPORTANT: If the supply voltage phase imbalance is more than
2%, contact your local electric utility company immediately.
33
Table 1F — Electrical Data (COBRA™ Energy Recovery 50HJ008-014 Units with 62AQ200)
UNIT
SIZE
NOMINAL
V-PH-Hz
IFM
TYPE
CONV
OUTLET
62AQ
FLA
NO
21.9
YES
21.9
NO
21.9
YES
21.9
NO
21.9
YES
21.9
NO
21.9
YES
21.9
NO
21.9
YES
21.9
NO
21.9
YES
21.9
NO
21.9
YES
21.9
NO
21.9
YES
21.9
STD
208/230-3-60
HIGH
50HJ008
STD
460-3-60
HIGH
STD
208/230-3-60
HIGH
50HJ009
STD
460-3-60
HIGH
HEATER MODEL NO.
CRHEATER---A00
—
017
010
011
012
012+017
—
017
010
011
012
012+017
—
017
010
011
012
012+017
—
017
010
011
012
012+017
—
016
013
014
015
014+016
—
016
013
014
015
014+016
—
016
013
014
015
014+016
—
016
013
014
015
014+016
—
017
010
011
012
012+017
—
017
010
011
012
012+017
—
017
010
011
012
012+017
—
017
010
011
012
012+017
—
016
013
014
015
014+016
—
016
013
014
015
014+016
—
016
013
014
015
014+016
—
016
013
014
015
014+016
34
ELECTRIC HEAT
Actual kW†
FLA
— /—
— /—
7.8/ 9.6
21.7/ 25.0
12.0/14.7
33.4/ 38.5
18.6/22.8
51.7/ 59.7
24.0/29.4
66.7/ 77.0
31.8/38.9
88.4/102.0
— /—
— /—
7.8/ 9.6
21.7/ 25.0
12.0/14.7
33.4/ 38.5
18.6/22.8
51.7/ 59.7
24.0/29.4
66.7/ 77.0
31.8/38.9
88.4/102.0
— /—
— /—
7.8/ 9.6
21.7/ 25.0
12.0/14.7
33.4/ 38.5
18.6/22.8
51.7/ 59.7
24.0/29.4
66.7/ 77.0
31.8/38.9
88.4/102.0
— /—
— /—
7.8/ 9.6
21.7/ 25.0
12.0/14.7
33.4/ 38.5
18.6/22.8
51.7/ 59.7
24.0/29.4
66.7/ 77.0
31.8/38.9
88.4/102.0
—
—
12.8
16.7
15.2
19.8
25.5
33.4
30.3
39.7
38.3
50.2
—
—
12.8
16.7
15.2
19.8
25.5
33.4
30.3
39.7
38.3
50.2
—
—
12.8
16.7
15.2
19.8
25.5
33.4
30.3
39.7
38.3
50.2
—
—
12.8
16.7
15.2
19.8
25.5
33.4
30.3
39.7
38.3
50.2
—/—
—/ —
7.8 /9.6
21.7/ 25.0
12.0/14.7
33.4/ 38.5
18.6/22.8
51.7/ 59.7
24.0/29.4
66.7/ 77.0
31.8/38.9
88.4/102.0
—/—
—/—
7.8/ 9.6
21.7/ 25.0
12.0/14.7
33.4/ 38.5
18.6/22.8
51.7/ 59.7
24.0/29.4
66.7/ 77.0
31.8/38.9
88.4/102.0
—/—
—/—
7.8/ 9.6
21.7/ 25.0
12.0/14.7
33.4/ 38.5
18.6/22.8
51.7/ 59.7
24.0/29.4
66.7/ 77.0
31.8/38.9
88.4/102.0
—/—
—/—
7.8/ 9.6
21.7/ 25.0
12.0/14.7
33.4/ 38.5
18.6/22.8
51.7/ 59.7
24.0/29.4
66.7/ 77.0
31.8/38.9
88.4/102.0
—
—
12.8
16.7
15.2
19.8
25.5
33.4
30.3
39.7
38.3
50.2
—
—
12.8
16.7
15.2
19.8
25.5
33.4
30.3
39.7
38.3
50.2
—
—
12.8
16.7
15.2
19.8
25.5
33.4
30.3
39.7
38.3
50.2
—
—
12.8
16.7
15.2
19.8
25.5
33.4
30.3
39.7
38.3
50.2
POWER SUPPLY*
MCA
MOCP**
60.1/ 60.1
70/ 70
60.1/ 64.0
70/ 80
74.5/ 80.9
80/ 90
97.4/107.4
100/110
116.2/129.0
125/150
143.3/160.3
150/175
66.1/ 66.1
70/ 70
66.1/ 68.2
80/ 80
79.3/ 85.1
90/ 90
102.2/111.6
110/125
121.0/133.2
125/150
148.1/164.5
150/175
63.2/ 63.2
70/ 70
63.2/ 67.1
80/ 80
77.6/ 84.0
90/ 90
100.5/110.5
110/125
119.3/132.1
125/150
146.4/163.4
150/175
69.2/ 69.2
80/ 80
69.2/ 71.3
80/ 80
82.4/ 88.2
90/100
105.3/114.7
110/125
124.1/136.3
125/150
151.2/167.6
175/175
29.4
35
36.1
40
40.0
45
57.0
60
64.8
70
77.9
80
32.1
35
38.2
45
42.1
45
59.1
60
66.9
70
80.0
80
30.8
35
37.5
40
41.4
45
58.4
60
66.2
70
79.3
80
33.5
35
39.6
45
43.5
45
60.5
70
68.3
70
81.4
90
62.1/ 62.1
70/ 70
62.1/ 64.0
70/ 80
74.5/ 80.9
80/ 90
97.4/107.4
100/110
116.2/129.0
125/150
143.3/160.3
150/175
68.1/ 68.1
70/ 70
68.1/ 68.2
80/ 80
79.3/ 85.1
90/ 90
102.2/111.6
110/125
121.0/133.2
125/150
148.1/164.5
150/175
65.2/ 65.2
70/ 70
65.2/ 67.1
80/ 80
77.6/ 84.0
90/ 90
100.5/110.5
110/125
119.3/132.1
125/150
146.4/163.4
150/175
71.2/ 71.2
80/ 80
71.2/ 71.3
80/ 80
82.4 / 88.2
90/100
105.3/114.7
110/125
124.1/136.3
125/150
151.2/167.6
175/175
31.7
35
36.1
40
40.0
45
57.0
60
64.8
70
77.9
80
34.4
40
38.2
45
42.1
45
59.1
60
66.9
70
80.0
80
33.1
35
37.5
40
41.4
45
58.4
60
66.2
70
79.3
80
35.8
40
39.6
45
43.5
45
60.5
70
68.3
70
81.4
90
DISCONNECT SIZE
FLA
LRA
66/ 66
366
66/ 66
366
72/ 78
366
93/102
366
111/122
366
135/151
366
71/ 71
371
71/ 71
371
78/ 83
371
99/107
371
116/127
371
141/156
371
69/ 69
391
69/ 69
391
76/ 82
391
97/106
391
114/126
391
139/155
391
75/ 75
395
75/ 75
395
81/ 86
395
102/111
395
120/131
395
145/160
395
32
184
35
184
38
184
54
184
61
184
73
184
34
186
37
186
41
186
57
186
64
186
76
186
34
196
36
197
40
197
56
197
63
197
75
197
36
198
39
199
42
199
58
199
65
199
77
199
68/ 68
400
68/ 68
400
72/ 78
400
93/102
400
111/122
400
135/151
400
73/ 73
405
73/ 73
405
78/ 83
405
99/107
405
116/127
405
141/156
405
71/ 71
425
71/ 71
425
76/ 82
425
97/106
425
114/126
425
139/155
425
77/ 77
429
77/ 77
429
81/ 86
429
102/111
429
120/131
429
145/160
429
34
206
35
206
38
206
54
206
61
206
73
206
37
208
37
208
41
208
57
208
64
208
76
208
36
218
36
219
40
219
56
219
63
219
75
219
38
220
39
221
42
221
58
221
65
221
77
221
Table 1F — Electrical Data (COBRA™ Energy Recovery 50HJ008-014 Units with 62AQ200) (cont)
UNIT
SIZE
NOMINAL
V-PH-Hz
IFM
TYPE
CONV
OUTLET
62AQ
FLA
NO
21.9
YES
21.9
NO
21.9
YES
21.9
NO
21.9
YES
21.9
NO
21.9
YES
21.9
NO
21.9
YES
21.9
NO
21.9
YES
21.9
STD
208/230-3-60
HIGH
50HJ012
STD
460-3-60
HIGH
208/230-3-60
STD
50HJ014
460-3-60
FLA
HACR
IFM
LRA
MCA
MOCP
NEC
UL
—
—
—
—
—
—
—
—
HIGH
HEATER MODEL NO.
CRHEATER---A00
—
017
010
012
012+017
010+012
—
017
010
012
012+017
010+012
—
017
010
012
012+017
010+012
—
017
010
012
012+017
010+012
—
016
013
015
014+016
013+015
—
016
013
015
014+016
013+015
—
016
013
015
014+016
013+015
—
016
013
015
014+016
013+015
—
017
010
012
012+017
010+012
—
017
010
012
012+017
010+012
—
016
013
015
014+016
013+015
—
016
013
015
014+016
013+015
LEGEND
Full Load Amps
Heating, Air Conditioning and Refrigeration
Indoor (Evaporator) Fan Motor
Locked Rotor Amps
Minimum Circuit Amps
Maximum Overcurrent Protection
National Electrical Code
Underwriters’ Laboratories
ELECTRIC HEAT
Actual kW†
FLA
—/—
—/—
7.8/ 9.6
21.7/ 25.0
12.0/14.7
33.4/ 38.5
24.0/29.4
66.7/ 77.0
31.8/38.9
88.4/102.0
37.5/45.9
104.2/104.2
—/—
—/—
7.8/ 9.6
21.0/ 25.0
12.0/14.7
33.4/ 38.5
24.0/29.4
66.7/ 77.0
31.8/38.9
88.4/102.0
37.5/45.9
104.2/120.3
—/—
—/—
7.8/ 9.6
21.7/ 25.0
12.0/14.7
33.4/ 38.5
24.0/29.4
66.7/ 77.0
31.8/38.9
88.4/102.0
37.5/45.9
104.2/120.3
—/—
—/—
7.8/ 9.6
21.0/ 25.0
12.0/14.7
33.4/ 38.5
24.0/29.4
66.7/ 77.0
31.8/38.9
88.4/102.0
37.5/45.9
104.2/120.3
—
—
12.8
16.7
15.2
19.8
30.3
39.7
38.3
50.2
45.9
60.1
—
—
12.8
16.7
15.2
19.8
30.3
39.7
38.3
50.2
45.9
60.1
—
—
12.8
16.7
15.2
19.8
30.3
39.7
38.3
50.2
45.9
60.1
—
—
12.8
16.7
15.2
19.8
30.3
39.7
38.3
50.2
45.9
60.1
—/—
—/—
7.8/ 9.6
21.7/ 25.0
12.0/14.7
33.4/ 38.5
24.0/29.4
66.7/ 77.0
31.8/38.9
88.4/102.0
37.5/45.9
104.2/120.3
—/—
—/—
7.8/ 9.6
21.7/ 25.0
12.0/14.7
33.4/ 38.5
24.0/29.4
66.7/ 77.0
31.8/38.9
88.4/102.0
37.5/45.9
104.2/120.3
—
—
9.6
16.7
14.7
19.8
29.4
39.7
38.9
50.2
45.9
60.1
—
—
9.6
16.7
14.7
19.8
29.4
39.7
38.9
50.2
45.9
60.1
POWER SUPPLY*
MCA
MOCP**
74.9/ 74.9
80/ 80
74.9/ 74.9
80/ 80
77.6/ 84.0
90/ 90
119.3/132.1
125/150
146.4/163.4
150/175
166.2/156.2
175/175
80.9/ 80.9
90/ 90
80.9/ 80.9
90/ 90
82.4/ 88.2
90/100
124.1/136.3
125/150
151.2/167.6
175/175
171.0/160.4
175/175
79.3/ 79.3
90/ 90
79.3/ 79.3
90/ 90
82.3/ 88.8
90/100
124.0/136.9
125/150
151.1/168.2
175/175
170.9/160.9
175/200
85.3/ 85.3
90/ 90
85.3/ 85.3
90/ 90
87.1/ 93.0
100/100
128.8/141.1
150/150
155.9/172.4
175/175
175.7/165.1
200/200
35.1
40
37.5
40
41.4
45
66.2
70
79.3
80
76.7
90
37.8
40
39.6
45
43.5
45
68.3
70
81.4
90
78.8
90
37.7
40
40.3
45
44.3
50
69.1
70
82.1
90
79.6
90
40.4
45
42.4
50
46.4
50
71.2
80
84.2
90
81.7
90
82.5/ 82.5
90/ 90
82.5/ 82.5
90/ 90
82.3/ 88.8
90/100
124.0/136.9
125/150
151.1/168.2
175/175
170.9/160.9
175/200
88.5/ 88.5
100/100
88.5/ 88.5
100/100
87.1/ 93.0
100/100
128.8/141.1
150/150
155.9/172.4
175/175
175.7/165.1
200/200
39.3
45
40.3
45
44.3
50
69.1
70
82.1
90
79.6
90
42.0
45
42.4
50
46.4
50
71.2
80
84.2
90
81.7
90
DISCONNECT SIZE
FLA
LRA
81/ 81
465
81/ 81
465
81/ 82
465
114/126
465
139/155
465
157/176
465
87/ 87
469
87/ 87
469
87/ 87
469
120/131
469
145/160
469
163/181
469
86/ 86
488
86/ 86
488
86/ 87
488
119/131
488
144/160
488
162/181
488
92/ 92
493
92/ 92
493
92/ 92
493
125/136
493
150/165
493
168/186
493
38
233
38
234
40
234
63
234
75
234
86
234
40
235
40
236
42
236
65
236
77
236
89
236
41
245
41
245
43
245
66
245
78
245
89
245
43
247
43
247
45
247
68
247
80
247
92
247
89/ 89
550/550
89/ 89
550/550
89/ 89
550/550
119/131
550/550
144/160
550/550
162/181
550/550
95/ 95
555/555
95/ 95
555/555
95/ 95
555/555
125/136
555/555
150/165
555/555
168/186
555/555
43
260
43
260
43
260
66
260
78
260
89
260
45
262
45
262
45
262
68
262
80
262
92
262
Example: Supply voltage is 460-3-60.
AB = 452 v
BC = 464 v
AC = 455 v
452 + 464 + 455
Average Voltage =
3
1371
3
= 457
=
*The values listed in this table do not include power exhaust. See Power Exhaust table for
requirements.
†Heater capacity (kW) is based on heater voltage of 240v or 480v. If power distribution
voltage to unit varies from rated, heater kW will vary accordingly.
**Fuse or HACR breaker.
NOTES:
1. In compliance with NEC requirements for multimotor and combination load equipment
(refer to NEC Articles 430 and 440), the overcurrent protective device for the unit shall
be fuse or HACR breaker. UL, Canada units may be fuse or circuit breaker.
2. Unbalanced 3-Phase Supply Voltage
Never operate a motor where a phase imbalance in supply voltage is greater than 2%.
Use the following formula to determine the percent of voltage imbalance.
max voltage deviation from average voltage
= 100 x
average voltage
Determine maximum deviation from average voltage.
(AB) 457 – 452 = 5 v
(BC) 464 – 457 = 7 v
(AC) 457 – 455 = 2 v
Maximum deviation is 7 v.
Determine percent of voltage imbalance.
% Voltage Imbalance = 100 x 7
457
= 1.53%
This amount of phase imbalance is satisfactory as it is below the maximum allowable
2%.
IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your local electric utility company immediately.
35
Table 1G — Electrical Data (COBRA™ Energy Recovery 48HJ008-014 Units with 62AQ300)
UNIT
SIZE
NOMINAL
V-PH-Hz
IFM
TYPE
STD
208/230-3-60
HIGH
48HJ008
STD
460-3-60
HIGH
STD
208/230-3-60
HIGH
48HJ009
STD
460-3-60
HIGH
STD
208/230-3-60
HIGH
48HJ012
STD
460-3-60
HIGH
208/230-3-60
STD
460-3-60
STD
48HJ014
FLA —
HACR —
IFM —
LRA —
MCA —
MOCP —
NEC —
UL
—
CONV
OUTLET
62AQ
FLA
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
29.8
29.8
29.8
29.8
15.8
15.8
15.8
15.8
29.8
29.8
29.8
29.8
15.8
15.8
15.8
15.8
29.8
29.8
29.8
29.8
15.8
15.8
15.8
15.8
29.8
29.8
15.8
15.8
LEGEND
Full Load Amps
Heating, Air Conditioning and Refrigeration
Indoor (Evaporator) Fan Motor
Locked Rotor Amps
Minimum Circuit Amps
Maximum Overcurrent Protection
National Electrical Code
Underwriters Laboratories
POWER SUPPLY*
MCA
MOCP†
68.0
80
74.0
80
71.1
80
77.1
80
35.0
40
37.7
40
36.4
40
39.1
45
70.0
80
76.0
80
73.1
80
79.1
80
37.3
40
40.0
45
38.7
45
41.4
45
82.8
90
88.8
100
87.2
100
93.2
100
40.7
45
43.4
50
43.3
50
46.0
50
90.4
100
96.4
100
44.9
50
47.6
60
DISCONNECT SIZE
FLA
LRA
75
420
80
425
78
445
84
449
38
211
41
213
40
224
43
226
77
454
82
459
80
479
86
483
41
233
43
235
42
246
45
248
90
519
96
523
95
542
101
547
44
261
47
263
47
272
50
274
98
604
104
609
49
297
51
299
Example: Supply voltage is 460-3-60.
AB = 452 v
BC = 464 v
AC = 455 v
452 + 464 + 455
Average Voltage =
3
=
*The values listed in this table do not include power exhaust. See
Power Exhaust table for requirements.
†Fuse or HACR breaker.
1371
3
= 457
Determine maximum deviation from average voltage.
(AB) 457 – 452 = 5 v
(BC) 464 – 457 = 7 v
(AC) 457 – 455 = 2 v
Maximum deviation is 7 v.
Determine percent of voltage imbalance.
7
% Voltage Imbalance = 100 x
457
= 1.53%
This amount of phase imbalance is satisfactory as it is below the
maximum allowable 2%.
NOTES:
1. In compliance with NEC requirements for multimotor and combination load equipment (refer to NEC Articles 430 and 440), the
overcurrent protective device for the unit shall be fuse or HACR
breaker. UL, Canada units may be fuse or circuit breaker.
2. Unbalanced 3-Phase Supply Voltage
Never operate a motor where a phase imbalance in supply voltage is greater than 2%. Use the following formula to determine
the percent of voltage imbalance.
max voltage deviation from average voltage
= 100 x
average voltage
IMPORTANT: If the supply voltage phase imbalance is more than
2%, contact your local electric utility company immediately.
36
Table 1H — Electrical Data (COBRA™ Energy Recovery 50HJ008-014 Units with 62AQ300)
UNIT
SIZE
NOMINAL
V-PH-Hz
IFM
TYP
CONV
OUTLET
62AQ
FLA
NO
21.9
YES
21.9
NO
21.9
YES
21.9
NO
21.9
YES
21.9
NO
21.9
YES
21.9
NO
21.9
YES
21.9
NO
21.9
YES
21.9
NO
21.9
YES
21.9
NO
21.9
YES
21.9
STD
208/230-3-60
HIGH
50HJ008
STD
460-3-60
HIGH
STD
208/230-3-60
HIGH
50HJ009
STD
460-3-60
HIGH
HEATER MODEL NO.
CRHEATER---A00
—
017
010
011
012
012+017
—
017
010
011
012
012+017
—
017
010
011
012
012+017
—
017
010
011
012
012+017
—
016
013
014
015
014+016
—
016
013
014
015
014+016
—
016
013
014
015
014+016
—
016
013
014
015
014+016
—
017
010
011
012
012+017
—
017
010
011
012
012+017
—
017
010
011
012
012+017
—
017
010
011
012
012+017
—
016
013
014
015
014+016
—
016
013
014
015
014+016
—
016
013
014
015
014+016
—
016
013
014
015
014+016
37
ELECTRIC HEAT
Actual kW†
FLA
— /—
— /—
7.8/ 9.6
21.7/ 25.0
12.0/14.7
33.4/ 38.5
18.6/22.8
51.7/ 59.7
24.0/29.4
66.7/ 77.0
31.8/38.9
88.4/102.0
— /—
— /—
7.8/ 9.6
21.7/ 25.0
12.0/14.7
33.4/ 38.5
18.6/22.8
51.7/ 59.7
24.0/29.4
66.7/ 77.0
31.8/38.9
88.4/102.0
— /—
— /—
7.8/ 9.6
21.7/ 25.0
12.0/14.7
33.4/ 38.5
18.6/22.8
51.7/ 59.7
24.0/29.4
66.7/ 77.0
31.8/38.9
88.4/102.0
— /—
— /—
7.8/ 9.6
21.7/ 25.0
12.0/14.7
33.4/ 38.5
18.6/22.8
51.7/ 59.7
24.0/29.4
66.7/ 77.0
31.8/38.9
88.4/102.0
—
—
12.8
16.7
15.2
19.8
25.5
33.4
30.3
39.7
38.3
50.2
—
—
12.8
16.7
15.2
19.8
25.5
33.4
30.3
39.7
38.3
50.2
—
—
12.8
16.7
15.2
19.8
25.5
33.4
30.3
39.7
38.3
50.2
—
—
12.8
16.7
15.2
19.8
25.5
33.4
30.3
39.7
38.3
50.2
—/—
—
7.8/ 9.6
16.4
12.0/14.7
32.7
18.6/22.8
—
24.0/29.4
16.4
31.8/38.9
32.7
—/—
—
7.8/ 9.6
16.4
12.0/14.7
32.7
18.6/22.8
—
24.0/29.4
16.4
31.8/38.9
32.7
—/—
—/—
7.8/ 9.6
21.7/ 25.0
12.0/14.7
33.4/ 38.5
18.6/22.8
51.7/ 59.7
24.0/29.4
66.7/ 77.0
31.8/38.9
88.4/102.0
—/—
—/—
7.8/ 9.6
21.7/ 25.0
12.0/14.7
33.4/ 38.5
18.6/22.8
51.7/ 59.7
24.0/29.4
66.7/ 77.0
31.8/38.9
88.4/102.0
—
—
12.8
16.7
15.2
19.8
25.5
33.4
30.3
39.7
38.3
50.2
—
—
12.8
16.7
15.2
19.8
25.5
33.4
30.3
39.7
38.3
50.2
—
—
12.8
16.7
15.2
19.8
25.5
33.4
30.3
39.7
38.3
50.2
—
—
12.8
16.7
15.2
19.8
25.5
33.4
30.3
39.7
38.3
50.2
POWER SUPPLY*
MCA
MOCP**
68.0/ 68.0
80/ 80
68.7/ 72.9
90/ 90
83.3/ 89.7
100/100
106.2/116.2
125/125
125.0/137.8
150/150
152.1/169.1
175/175
74.0/ 74.0
80/ 80
74.0/ 77.1
90/ 90
88.1/ 93.9
100/110
111.0/120.4
125/125
129.8/142.0
150/150
156.9/173.3
175/175
71.1/ 71.1
80/ 80
71.8/ 76.0
90/ 90
86.4/ 92.8
100/110
109.3/119.3
125/125
128.1/140.9
150/150
155.2/172.2
175/175
77.1/ 77.1
80/ 80
77.1/ 80.2
90/100
91.2/ 97.0
110/110
114.1/123.5
125/150
132.9/145.1
150/150
160.0/176.4
175/200
35.0
40
44.4
60
48.3
60
65.3
80
73.1
90
86.2
100
37.7
40
46.5
60
50.4
60
67.4
80
75.2
90
88.3
100
36.4
40
45.8
60
49.7
60
66.7
80
74.5
90
87.6
100
39.1
45
47.9
60
51.8
60
68.8
80
76.6
90
89.7
100
70.0/ 70.0
80/ 80
70.0/ 72.9
90/ 90
83.3/ 89.7
100/100
106.2/116.2
125/125
125.0/137.8
150/150
152.1/169.1
175/175
76.0/ 76.0
80/ 80
76.0/ 77.1
90/ 90
88.1/ 93.9
100/110
111.0/120.4
125/125
129.8/142.0
150/150
156.9/173.3
175/175
73.1/ 73.1
80/ 80
73.1/ 76.0
90/ 90
86.4/ 92.8
100/110
109.3/119.3
125/125
128.1/140.9
150/150
155.2/172.2
175/175
79.1/ 79.1
80/ 80
79.1/ 80.2
90/100
91.2/ 97.0
110/110
114.1/123.5
125/150
132.9/145.1
150/150
160.0/176.4
175/200
37.3
40
44.4
60
48.3
60
65.3
80
73.1
90
86.2
100
40.0
45
46.5
60
50.4
60
67.4
80
75.2
90
88.3
100
38.7
45
45.8
60
49.7
60
66.7
80
74.5
90
87.6
100
41.4
45
47.9
60
51.8
60
68.8
80
76.6
90
89.7
100
DISCONNECT SIZE
FLA
LRA
75/ 75
420/420
75/ 75
420/420
81/ 87
420/420
102/112
420/420
120/131
420/420
145/160
420/420
80/ 80
425/425
80/ 80
425/425
87/ 92
425/425
108/116
425/425
125/136
425/425
150/165
425/425
78/ 78
445/445
78/ 78
445/445
85/ 91
445/445
106/115
445/445
123/135
445/445
148/164
445/445
84/ 84
449/449
84/ 84
449/449
90/ 96
449/449
111/120
449/449
129/140
449/449
154/169
449/449
38
211
41
211
45
211
61
211
68
211
80
211
41
213
44
213
47
213
63
213
70
213
82
213
40
223
43
224
47
224
62
224
69
224
81
224
43
225
45
226
49
226
65
226
72
226
84
226
77/ 77
454/454
77/ 77
454/454
81/ 87
454/454
102/112
454/454
120/131
454/454
145/160
454/454
82/ 82
459/459
82/ 82
459/459
87/ 92
459/459
108/116
459/459
125/136
459/459
150/165
459/459
80/ 80
479/479
80/ 80
479/479
85/ 91
479/479
106/115
479/479
123/135
479/479
148/164
479/479
86/ 86
483/483
86/ 86
483/483
90/ 96
483/483
111/120
483/483
129/140
483/483
154/169
483/483
41
233
41
233
45
233
61
233
68
233
80
233
43
235
44
235
47
235
63
235
70
235
82
235
42
245
43
246
47
246
62
246
69
246
81
246
45
247
45
248
49
248
65
248
72
248
84
248
Table 1H — Electrical Data (COBRA™ Energy Recovery 50HJ008-014 Units with 62AQ300) (cont)
UNIT
SIZE
NOMINAL
V-PH-Hz
IFM
TYP
CONV
OUTLET
62AQ
FLA
NO
21.9
YES
21.9
NO
21.9
YES
21.9
NO
21.9
YES
21.9
NO
21.9
YES
21.9
NO
21.9
YES
21.9
NO
21.9
YES
21.9
STD
208/230-3-60
HIGH
50HJ012
STD
460-3-60
HIGH
208/230-3-60
STD
50HJ014
460-3-60
FLA
HACR
IFM
LRA
MCA
MOCP
NEC
UL
—
—
—
—
—
—
—
—
HIGH
HEATER MODEL NO.
CRHEATER---A00
—
017
010
012
012+017
012+010
—
017
010
012
012+017
012+010
—
017
010
012
012+017
012+010
—
017
010
012
012+017
012+010
—
016
013
015
014+016
015+013
—
016
013
015
014+016
015+013
—
016
013
015
014+016
015+013
—
016
013
015
014+016
015+013
—
017
010
012
012+017
012+010
—
016
013
015
014+016
015+013
—
016
013
015
014+016
015+013
—
016
013
015
014+016
015+013
LEGEND
Full Load Amps
Heating, Air Conditioning and Refrigeration
Indoor (Evaporator) Fan Motor
Locked Rotor Amps
Minimum Circuit Amps
Maximum Overcurrent Protection
National Electrical Code
Underwriters’ Laboratories
ELECTRIC HEAT
Actual kW†
FLA
—/—
—/—
7.8/ 9.6
21.7/ 25.0
12.0/14.7
33.4/ 38.5
24.0/29.4
66.7/ 77.0
31.8/38.9
88.4/102.0
37.5/45.9
104.2/104.2
—/—
—/—
7.8/ 9.6
21.0/ 25.0
12.0/14.7
33.4/ 38.5
24.0/29.4
66.7/ 77.0
31.8/38.9
88.4/102.0
37.5/45.9
104.2/120.3
—/—
—/—
7.8/ 9.6
21.7/ 25.0
12.0/14.7
33.4/ 38.5
24.0/29.4
66.7/ 77.0
31.8/38.9
88.4/102.0
37.5/45.9
104.2/120.3
—/—
—/—
7.8/ 9.6
21.0/ 25.0
12.0/14.7
33.4/ 38.5
24.0/29.4
66.7/ 77.0
31.8/38.9
88.4/102.0
37.5/45.9
104.2/120.3
—
—
12.8
16.7
15.2
19.8
30.3
39.7
38.3
50.2
45.9
60.1
—
—
12.8
16.7
15.2
19.8
30.3
39.7
38.3
50.2
45.9
60.1
—
—
12.8
16.7
15.2
19.8
30.3
39.7
38.3
50.2
45.9
60.1
—
—
12.8
16.7
15.2
19.8
30.3
39.7
38.3
50.2
45.9
60.1
—/—
—/—
7.8/ 9.6
21.7/ 25.0
12.0/14.7
33.4/ 38.5
24.0/29.4
66.7/ 77.0
31.8/38.9
88.4/102.0
37.5/45.9
104.2/120.3
—/—
—/—
7.8/ 9.6
21.7/ 25.0
12.0/14.7
33.4/ 38.5
24.0/29.4
66.7/ 77.0
31.8/38.9
88.4/102.0
37.5/45.9
104.2/120.3
—
—
12.8
16.7
15.2
19.8
30.3
39.7
38.3
50.2
45.9
60.1
—
—
12.8
16.7
15.2
19.8
30.3
39.7
38.3
50.2
45.9
60.1
POWER SUPPLY*
MCA
MOCP**
82.8/ 82.8
90/ 90
82.8/ 82.8
90/ 90
86.4/ 92.8
100/110
128.1/140.9
150/150
155.2/172.2
175/175
175.0/165.0
175/200
88.8/ 88.8
100/100
88.8/ 88.8
100/100
91.2/ 97.0
110/110
132.9/145.1
150/150
160.0/176.4
175/200
179.8/169.2
200/200
87.2/ 87.2
100/100
87.2/ 87.2
100/100
90.8/ 97.2
100/110
132.5/145.3
150/150
159.6/176.6
175/200
179.4/169.4
200/200
93.2/ 93.2
100/100
93.2/ 93.2
100/100
95.6/101.4
110/110
137.3/149.5
150/150
164.4/180.8
175/200
184.2/173.6
200/200
40.7
45
45.8
60
49.7
60
66.7
80
87.6
100
85.0
110
43.4
45
47.9
60
51.8
60
68.8
80
89.7
100
87.1
110
43.3
50
48.4
60
52.3
60
69.3
80
90.2
100
87.6
110
46.0
50
50.5
60
54.4
60
71.4
90
92.3
100
89.7
110
90.4/ 90.4
100/100
90.4/ 90.4
100/100
90.8/ 97.2
100/110
132.5/145.3
150/150
159.6/176.6
175/200
179.4/169.4
200/200
96.4/ 96.4
100/100
96.4/ 96.4
100/100
95.6/101.4
110/110
137.3/149.5
150/150
164.4/180.8
175/200
184.2/173.6
200/200
44.9
50
48.4
60
52.3
60
48.4
70
90.2
100
87.6
110
47.6
50
50.5
60
54.4
60
50.5
70
92.3
100
89.7
110
DISCONNECT SIZE
FLA
LRA
90/ 90
519
90/ 90
519
90/ 91
519
123/135
519
148/164
519
166/185
519
96/ 96
523
96/ 96
523
96/ 96
523
129/140
523
154/169
523
172/190
523
95/ 95
542
95/ 95
542
95/ 96
542
128/140
542
153/169
542
171/190
542
101/101
547
101/101
547
101/101
547
134/145
547
159/174
547
177/195
547
44
260
44
261
47
261
62
261
81
261
93
261
47
262
47
263
49
263
65
263
84
263
95
263
47
272
47
272
50
272
65
272
84
272
96
272
50
274
50
274
52
274
68
274
87
274
98
274
98/ 98
604/604
98/ 98
604/604
98/ 98
604/604
128/140
604/604
153/169
604/604
171/190
604/604
104/104
609/609
104/104
609/609
104/104
609/609
134/145
609/609
159/174
609/609
177/195
609/609
49
287
49
287
50
287
49
287
84
287
96
287
51
289
51
289
52
289
51
289
87
289
98
289
Example: Supply voltage is 460-3-60.
AB = 452 v
BC = 464 v
AC = 455 v
Average Voltage =
452 + 464 + 455
3
1371
3
= 457
=
*The values listed in this table do not include power exhaust. See Power Exhaust table for
requirements.
†Heater capacity (kW) is based on heater voltage of 240v or 480v. If power distribution
voltage to unit varies from rated, heater kW will vary accordingly.
**Fuse or HACR breaker.
NOTES:
1. In compliance with NEC requirements for multimotor and combination load equipment
(refer to NEC Articles 430 and 440), the overcurrent protective device for the unit shall
be fuse or HACR breaker. UL, Canada units may be fuse or circuit breaker.
2. Unbalanced 3-Phase Supply Voltage
Never operate a motor where a phase imbalance in supply voltage is greater than 2%.
Use the following formula to determine the percent of voltage imbalance.
max voltage deviation from average voltage
= 100 x
average voltage
Determine maximum deviation from average voltage.
(AB) 457 – 452 = 5 v
(BC) 464 – 457 = 7 v
(AC) 457 – 455 = 2 v
Maximum deviation is 7 v.
Determine percent of voltage imbalance.
% Voltage Imbalance = 100 x 7
457
= 1.53%
This amount of phase imbalance is satisfactory as it is below the maximum allowable
2%.
IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your
local electric utility company immediately.
38
4. From the outside of the unit’s side panels fasten the
thermostat(s) with two mounting screws, with the quick
connect terminals face up. See Fig. 27.
5. Install thermostat knobs (provided in kit). See Fig. 27.
6. Set supply air quantity (on units with optional factoryinstalled supply air fan [GA] or field-installed accessory
supply air fan kit [CRFANKIT001-006A00]). Select the
fan speed and damper position to obtain desired cfm.
Relocate damper stops to the desired position on the
damper support rail and adjust the fan speed by relocating
the wire on the supply fan motor terminal block. Factory
set position is 45 degrees for the damper position, and
medium speed for the motor. Relocate stops to top hole
for 30 degrees, bottom hole for 60 degrees, and remove
stops for 90 degrees (see Fig. 27).
7. Install the aluminum filter screen and end cap with
screws along the top, as shown in Fig. 27.
INDOOR AIR QUALITY AND CO2 SENSORS — If a space
CO2 sensor is desired, a field-installed 25% outdoor-air damper
must be used for proper Demand Control Ventilation (DCV)
operation. If not, the 62AQ Energy$Recycler unit outdoor-air
dampers will remain shut unless the space CO2 levels are
above the CO2 set point.
The 25% outdoor-air damper should be placed in the normal location on the base rooftop unit. See Fig. 24. This damper
will allow additional outdoor air to be brought in if the CO2
level is high, independent of 62AQ unit operation. In the
occupied mode, the 62AQ unit will usually bring in enough
fresh air to maintain CO2 levels below the set point. If not, the
25% outdoor-air damper will open to allow additional fresh air
to be brought in. See Fig. 25 and 26 for control wiring. The recommended CO2 sensor is a 33ZCSENCO2 and the recommended 25% outdoor-air damper is a CRTWOPOS001A01 or
a CRTWOPOS002A01 (dependent on rooftop unit size). See
33ZCSENC02 or 25% outdoor-air damper installation instructions for additional information.
Step 10 — Mount the Barometric Relief
Damper — The hood kit supplied with the energy recovery
Step 9 — Assemble and Mount Supply-Air
Hood — The hood kit supplied with the 62AQ
section is needed to complete this installation. The exhaust air
hood (that includes the barometric relief damper) must be
assembled and installed on the energy recovery section per the
instructions below. See Fig. 28.
1. Install the barometric relief damper onto the
energy recovery section by mounting the hinge with
2 screws then sliding in the hinge pin. See Fig. 28.
2. Install damper limiter for 30, 45, or 60 degree angles.
Limiter pin not required for 90-degree setting (set to the
desired position based on cfm requirements and fan
speed). See Fig. 28. Fan speed is adjusted by relocating
wires on fan terminal blocks.
3. Loosen compressor bolts and remove shipping blocks
from under compressor on the 62AQ060 and 62AQ100
sizes only.
4. Install exhaust hood.
5. Install wire guard as shown in Fig. 28.
Energy$Recycler™ section is needed to complete this installation. See Fig. 27. The Energy$Recycler section supply air
hood installs around its motorized damper inlet.
NOTE: Mount the hood sides to the Energy$Recycler section first, and then the hood top for easier installation. The
thermostats are shipped factory-wired and taped behind the
damper blade of the Energy$Recycler section. Knobs and
screws are in hood package.
1. Assemble and mount supply air hood as shown in Fig. 27.
2. Discard the tape that holds the thermostats behind the
damper plates. Mount thermostats to the hood sides of the
energy recovery section unit into the holes provided, with
thermostat terminals facing up. See Fig. 27. Mount
outside cooling set point thermostat part number
HH22HA060 (white label) on the left side of the hood.
See Fig. 27.
3. Mount the outside heating thermostat part number
HH22HA065 (red label) on the right side of the hood. See
Fig. 27.
OPTIONAL 25%
OA DAMPER
Never operate the unit without the wire guard in place.
OPTIONAL
HUMIDI-MIZER COIL
EVAPORATOR
ROOFTOP UNIT (RTU)
COMPRESSOR 2
62AQ ENERGY$RECYCLER™
SECTION
OUTSIDE
AIR
COILS
COMPRESSOR
MIXED AIR
HEAT
EXHAUST
AIR
ROOF LINE
RA1
a48-8164
B
COMPRESSOR 1
RA2
RETURN AIR
SUPPLY AIR
A
Fig. 24 — 25% Outdoor Air Damper Location
39
THERMIDISTAT™/
HUMIDSTAT
R
C
Y1
Y2
G
W1
W2
R1
OC
DEHUM
Commercial
Thermidistat
J8
8
7
6
5
4
3
2
1
24v Power
NO
(Alarm Relay
Contact)
3
1
R1
33ZCSENCO2
HM
24v Power
COM
62AQ CONNECTION
BOARD
4
6
R1
OC
GRA
GRA
YEL
YEL
VIO
6
7
10
8
2
3
4
1
5
9
11
12
CRTWOPOS001A01 or CRTWOPOS002A02
TWO POSITION DAMPER PLUG
W2
T STAT
W1
WHT
WHT
a48-8062
LEGEND
Field-Provided Wires
NOTES:
1. R1 is a 2-pole, normally open relay (recommended relay: HN61KK040).
2. The space CO2 level and set point can be read and changed locally.
Fig. 25 — CO2 Sensor Wiring with Electro-Mechanical Controls
SIG COM
4-20 mA
R1
J8
8
7
6
5
4
3
2
1
TB-2
1
2
3
4
5
6
7
8
(base unit
control box)
24v Power
NO
(Alarm
Relay
Contact)
1
3
R1
33ZCSENCO2
HM
24v Power
4
6
R1
COM
62AQ CONNECTION
BOARD
OC
GRA
GRA
YEL
YEL
VIO
6
7
10
8
2
3
4
1
5
9
11
12
CRTWOPOS001A01 or CRTWOPOS002A02
TWO POSITION DAMPER PLUG
W2
T STAT
W1
WHT
WHT
a48-8063
LEGEND
Field-Provided Wires
NOTES:
1. R1 is a 2-pole, normally open relay (recommended relay: HN61KK040).
2. The space CO2 level can be read on the Carrier Comfort Network® system; set point must be changed locally.
Fig. 26 — CO2 Sensor Wiring with Factory-Installed PremierLink™ Direct Digital Control (DDC)
40
HOOD TOP
DAMPER BLADE STOP
SHIPPED WITH UNIT
IN 45° POSITION
KNOB
SCREWS (2)
HOOD
SIDE
LTLO
MOUNTING
BRACKET
HEATING POINT
THERMOSTAT
(RED LABEL)
END CAP
COOLING SET POINT
THERMOSTAT (WHITE LABEL)
HOOD SIDE
TEMPERATURE SWITCH
SHIPPED WITH UNIT
TEMPERATURE
COOLING
LOCKOUT (LTLO)
SCREW INSTALLATION (2)
KNOB
ALUMINUM FILTER SCREEN
a62-93
Fig. 27 — Energy Recovery Section Supply-Air Hood Assembly
HOOD TOP
HOOD SIDE
HINGE
HINGE PIN
BAROMETRIC
RELIEF DAMPER
60° LOCATION
45° LOCATION
HOOD SIDE
WIRE GUARD
30° LOCATION
a62-102
DAMPER LIMITER
Fig. 28 — Energy Recovery Section Barometric Exhaust Air Hood Assembly
41
• On a section of wall without pipes or ductwork.
The light commercial Thermidistat device should NOT be
mounted:
• Close to a window, on an outside wall, or next to a door
leading to the outside.
• Exposed to direct light and heat from a lamp, sun, fireplace, or other temperature-radiating object that may
cause a false reading.
• Close to or in direct airflow from supply registers and
return-air registers.
• In areas with poor air circulation, such as behind a door
or in an alcove.
Step 11 — Set the Outdoor Cooling and Heating Thermostats
IMPORTANT: The 62AQ Energy$Recycler™ section is
shipped with an outdoor thermostat set at 55 F which locks
out mechanical cooling on the rooftop section and the
Energy$Recycler section compressor. If this feature is not
desirable, the rooftop unit’s compressor can be allowed to
run by relocating both gray wires to the same side of the low
temperature lockout thermostat (LTLO) leaving the white
wire on the opposite pole, locking out only the
Energy$Recycler section compressor. The LTLO is also
accessible by removing the filter access panel and the door
of the damper mounting bracket.
COOLING — During the unoccupied period, the economizer
mode of operation is used as the first stage of cooling. When
the outside air temperature is below the cooling thermostat set
point, the outside air will be used for first stage cooling.
HEATING — The heating thermostat should be adjusted to the
second stage balance point (heat output of the energy recovery
section plus the heat output of the first stage on rooftop unit
equals building load at this temperature). Above this setting,
first stage heating will be the energy recovery section unit and
second stage will be the first stage of the rooftop unit. Below
this point, first stage heating will be the Energy$Recycler
section plus first stage heating of the rooftop unit. The second
stage will be the second stage of the rooftop unit.
a62-109
HEIGHT (in.)
4 1 /4
LIGHT COMMERCIAL
THERMIDISTAT™ ACCESSORY
WIDTH (in.)
7 1 /2
DEPTH (in.)
1 3 /8
Fig. 29 — Light Commercial
Thermidistat Accessory
General — A light commercial Thermidistat accessory
(part number TSTATCCPLH01-B) or PremierLink™ controller with humidistat is required for field installation for each unit
to control the Energy$Recycler section. See Fig. 29.
The light commercial Thermidistat is a 7-day programmable, wall-mounted, low-voltage control that combines temperature and humidity control in a single unit. It provides separate
set points for heating and cooling, and adds dehumidification
with separate set points for occupied and unoccupied periods.
Different heating and cooling set points and times are
programmable for up to 4 periods per day and 7 days per week.
The dehumidification output provides direct control of the
Energy$Recycler section, rooftop section fans, and the rooftop
section compressor in response to the programmed time schedules and temperature settings. During power loss an internal
memory stores programs and settings for unlimited time, and
the clock continues to run for at least 8 hours. Batteries are not
used.
FOR HUMIDI-MIZER AND
MOISTUREMI$ER UNITS ONLY
LIGHT
COMMERCIAL
THERMIDISTAT
ACCESSORY
Power — Note that this control does not require batteries
and is not “power stealing.” It does require 24 vac (R and C
terminals) from the rooftop section’s low-voltage transformer
to be connected to it for proper operation. The control will not
operate without these 2 connections. See Fig. 30.
OPTIONAL
HUMIDISTAT
(HL38MG029)
Dehumidification Equipment and Connections — The dehumidification output terminals on the light
commercial Thermidistat device must be connected to the
dehumidify input terminals on the Energy$Recycler section.
Additionally, if the rooftop section is equipped with the optional
Humidi-MiZer™ dehumidification accessory, a relay in the
Energy$Recycler section energizes the Humidi-MiZer solenoid
to activate the enhanced dehumidification mode.
a48-8158
Step 1 — Select Light Commercial Thermidistat
Location — The light commercial Thermidistat should be
Fig. 30 — Light Commercial Thermidistat
Accessory Low-Voltage Connections
mounted:
• Approximately 5 ft (1.5 m) from floor.
• Close to or in a frequently used room, preferably on an
inside partitioning wall.
42
Step 2 — Set DIP Switches — There is a 4-section
DIP (Dual In-line Package) switch within the light commercial
Thermidistat™ device which must be properly set by the installer. It is easiest to set these 4 switches before the light commercial Thermidistat device is mounted to the wall, so complete the following steps first:
1. Open hinged light commercial Thermidistat cover.
2. Remove cover completely by gently snapping it apart at
the hinge.
3. Switches are located in upper right corner of circuit
board. To change switch position, use corner of a small
screwdriver to slide switch to opposite position.
4. After switches have been set, do not reassemble the
2 halves. The rear plastic will be first mounted to wall.
SWITCH 1 — Not used
SWITCH 2 — Not used
SWITCH 3 — SMART/CONVENTIONAL RECOVERY —
Switch 3 selects between conventional or smart recovery from
setback. Conventional recovery changes to new set point at
preprogrammed time. Smart recovery, which is active in both
heating and cooling, starts selected cycle 90 minutes earlier
and smoothly adjusts set point so room will arrive at programmed temperature at programmed time.
NOTE: The occupied output is only energized at the preprogrammed time.
To Set:
OFF — for smart recovery. This is factory default.
ON — for conventional recovery.
SWITCH 4 — INSTALLER TEST OFF/ON — Switch 4 selects
a special installer test mode that assists with checkout and troubleshooting. See Step 5 — Conduct Light Commercial Thermidistat
Start-Up and Checkout.
To Set:
OFF — for normal operation. (Factory default setting.)
ON — for Installer Test mode.
4.
5.
6.
7.
Switches, on this page). Level rear plastic against wall
(for aesthetic value only — light commercial Thermidistat device does not need to be leveled for proper
operation) and mark wall through 2 mounting holes.
Drill two 3/16-in. mounting holes in wall where marked.
Secure rear plastic to wall with 2 screws and anchors
provided. Additional mounting holes are available for
more secure mounting if needed. Make sure all wires
extend through hole in mounting base.
Adjust length and routing of each wire to reach proper
connector block and terminal on mounting base with
1/ -in. extra length. Strip only 1/ in. of insulation from
4
4
each wire to prevent adjacent wires from shorting together when connected.
Match and connect equipment wires to proper terminals
of each connector block. Remember R and C must be
connected for proper operation (see Fig. 30).
Improper wiring or installation may damage light commercial Thermidistat device. Check to make sure wiring is
correct before proceeding with installation or turning on
power. Refer to wiring schematic in the Troubleshooting
section of this manual.
8. Push any excess wire into wall and against rear plastic.
Seal hole in wall to prevent air leaks. Leaks can affect
operation.
9. Reattach light commercial Thermidistat body to mounting base by first reattaching hinge.
10. Close light commercial Thermidistat assembly, making
sure pins on back of circuit board align with sockets in
connector.
11. Turn on power to equipment.
On power up, all display segments will light for 2 seconds.
For the next 8 seconds, a 2-digit code appears on LED display
that identifies light commercial Thermidistat configuration:
CP — Commercial Product
Step 3 — Install Light Commercial Thermidistat
Device
Step 4 — Set Light Commercial Thermidistat
Configuration (Fig. 31 and 32) — Configuration op-
tions, like DIP switch settings, are intended to be selected at
installation and normally are not modified by the owner. These
options must be made as part of the installation. A special
procedure allows entry into the Configuration mode. While in
configuration mode, up to 10 selections can be made. A
description of each selection and how to use the Configuration
mode are as follows:
CONFIGURATION OPTIONS — SUMMARY
Option 1 — Anticipator adjustment
Option 2 — Clean filter timer adjustment
Option 3 — English/Metric selection
Option 4 — Fan (G) ON with W selection
Option 9 — Holiday heat set point
Option 10 — Holiday cool set point
Option 11 — Holiday humidity set point
Option 13 — Room temperature offset adjustment
Option 14 — Heat cool deadband adjustment
Option 21 — Keyboard lock
TO ENTER CONFIGURATION MODE — Press and hold
FAN button for approximately 10 seconds until COOL set
point display indicates a flashing “01”. The light commercial
Thermidistat device is now in Configuration mode. It will
automatically exit this mode if no button is pressed for 3 minutes. Pressing HOLD End button will exit the Configuration
mode immediately.
Before installing light commercial Thermidistat device,
turn off all power to COBRA™ energy recovery units.
There may be more than one power disconnect. Electrical
shock can cause personal injury or death. Install lockout
tags on disconnects.
1. Turn off all power to equipment. Tag disconnect.
2. If an existing thermostat is being replaced:
a. Remove existing thermostat from wall.
b. Disconnect wires from existing thermostat, one at
a time.
c. As each wire is disconnected, record wire color
and terminal marking.
d. New or additional wire may be needed to accommodate added humidity outputs transformer common.
e. Discard or recycle old thermostat.
Mercury is a hazardous waste and MUST be disposed of
properly.
3. Route wires through large hole in rear plastic. Level rear
plastic (separated from front plastic in Step 2 — Set DIP
43
COPY PREVIOUS PROGRAM
DAY
CHANGE DAY
MODE
UP
HUMIDITY
FAN
DOWN
RESET
FILTER
SET TIME/TEMP
HOLIDAY
TO ADJUST:
1. Enter Configuration mode. The upper small (COOL set
point) display will be flashing 01. If not, use up and down
set point buttons to move it to 01.
2. Press SET TIME/TEMP button once to flash current
selection of 1, 2, 3, 4, 5, 6, 7, 8, or 9 on large display.
Factory default is 3.
3. Use up and down set point buttons to move to desired
anticipator setting.
4. Press SET TIME/TEMP button again to flash small
upper display for selection of another option, or press
HOLD End to exit Configuration mode.
Option 2 — Clean Filter Timer — Select hours of blower
operation (heating, cooling, or fan) before CLEAN FILTER
icon is displayed. With OFF selected, icon will never come on,
disabling this feature. Time selection can range from 400 to
3600 blower operation hours by selecting numbers 1 through 9.
(Time is 400 times number selected.) Factory default is 2
(800 hr). Recommended blower operation hours selections are:
disposable filter — 400 to 800 hr; media filter — 1200 to
1600 hr; electronic air cleaner — 1600 to 2400 hr.
TO SELECT OR ADJUST:
1. Enter Configuration mode. Use up and down set point
buttons to make small display (now flashing) indicate 02.
2. Press SET TIME/TEMP button once to display current
selection of 1, 2, 3, 4, 5, 6, 7, 8, or 9 on large display.
Factory default is 2.
3. Use up and down set point buttons to move between
available choices.
4. Press SET TIME/TEMP button again to flash small
upper display for selection of another option, or press
HOLD End to exit Configuration mode.
Option 3 — English/Metric — Select between Fahrenheit
and Celsius operation. Factory default is Fahrenheit.
TO SELECT OR ADJUST:
1. Enter Configuration mode. Use up and down set point
buttons to make small display (now flashing) indicate 03.
2. Press SET TIME/TEMP button once to flash current selection of F or C. Factory default is F.
3. Use up and down set point buttons to move between F
and C on large display.
4. Press SET TIME/TEMP button again to flash small upper display for selection of another option, or press
HOLD End to exit Configuration mode.
Option 4 — Fan (G) On With W — This selection determines whether fan (G) output is to be ON or OFF when any W
(furnace or strip heat) output is ON. Most furnaces and fan
coils manage their own blowers and do not require separate G
signal. For these applications, select OFF. Some auxiliary heaters require separate G signal to turn on blower. In this case,
select ON. Factory default is OFF.
TO SELECT:
1. Enter Configuration mode. Use up and down set point
buttons to make small display (now flashing) indicate 04.
2. Press SET TIME/TEMP button once to flash large
display.
3. Use up or down set point buttons to alternate between
OFF and ON on large display.
4. Press SET TIME/TEMP button again to flash small
upper display for selection of another option, or press
HOLD End to exit Configuration mode.
HOLD
End
a62-103
Fig. 31 — Light Commercial Thermidistat™ Keypad
Mode
OFF
OC1 UN1 OC2 UN2
HOLD HOLIDAY
DEHUM
HEAT
COOL
Mo Tu We Th
Fr Sa Su
COOL
TIME
AM
PM
AUTO
Fan
ON**
AUTO
HEAT
CLEAN FILTER
PROGRAMMING
a62-104
Fig. 32 — Light Commercial Thermidistat LCD
on Power Up
WHILE IN CONFIGURATION MODE — The upper small
(COOL set point) display indicates selected option number and
large display indicates selection made within that option. One of
these will be flashing. The up and down set point buttons are
used, both to move between available options and to make
selection for each option. When option number (small display)
is flashing, the up and down set point buttons allows for scrolling through options moving between available option numbers.
After desired option number has been selected, press SET
TIME/TEMP button once. The large display will now flash,
indicating that up and down set point buttons now control available choices within that option. Each press of SET TIME/
TEMP button switches between available option (small display)
and available selections within each option (large display).
Option 1 — Anticipator Adjustment — This adjustment
controls sensitivity and cycle rate of light commercial Thermidistat device. Higher numbers decrease sensitivity and slow
cycle rate. Lower numbers increase sensitivity and cycle rate.
Anticipator values can range from 1 to 9. Factory default is 3.
This default selection provides optimum performance in nearly
all installations. Try it first; do not change setting unless there is
evidence of need to do so.
Unlike conventional anticipators, this setting is not determined by current draw. There is no need to measure, know, or
compensate for current draw. There is also no droop with this
light commercial Thermidistat device. Regardless of setting
and number of stages, both heating and cooling will control to
their respective set points.
44
4. Press SET TIME/TEMP button again to flash small
upper display for selection of another option, or press
HOLD End to exit Configuration mode.
Option 14 — Heat/Cool Deadband Adjustment — This option selects the minimum difference between heating and cooling set points. A larger difference saves energy and a smaller
difference decreases temperature difference between heating
and cooling. Factory default is 2, which means cooling set
point must be a minimum of 2 degrees above heating set point.
An attempt to move them closer will result in one “pushing”
the other to maintain the required difference.
Depending on set points, moving deadband closer than
2 degrees may result in regular cycling between heat and cool
when AUTO mode is selected. However, this cycling cannot
occur more often than 1 transition every 10 minutes. The system has a built-in requirement that it cannot switch between
heat and cool without a 10-minute “off” time between the 2
operations. Specifically, to switch from one mode to the other,
there must be no demand for the old mode and a demand for
the new mode, and this must exist continually for 10 minutes
before transition to the new mode will occur.
TO SELECT:
1. Enter Configuration mode if not already there. Use up
and down set point buttons to make small display (now
flashing) indicate 14.
2. Press SET TIME/TEMP button once to flash large
display.
3. Use up or down set point buttons to move between 0, 1, 2,
3, 4, 5, or 6 on large display. Factory default is 2.
4. Press SET TIME/TEMP button again to flash small
upper display for selection of another option, or press
HOLD End to exit Configuration mode.
Option 21 — Keyboard Lock — This option allows the
installer to disable the thermostat from being changed.
TO SELECT:
1. Enter Configuration mode. Use up and down set point
buttons to make small display (now flashing) indicate 21.
2. Press SET TIME/TEMP button once to flash large
display.
3. Use up and down set point buttons to move between OF
and ON on large display. Factory default is OF, keyboard
is active.
NOTE: Once the keyboard is locked the building manager can momentarily unlock the keyboard by pressing the
following keys sequentially, MODE, COPY PREVIOUS
DAY, SET TIME/TEMP, and HOLD End. The sequence
must be completed within a 5-second period, and the
keypad will be unlocked. The keypad will return to lock
once the keypad is idle for a 2-minute period or immediately if after exiting the Configuration mode.
4. Press SET TIME/TEMP button again to flash upper
small display for selection of another option, or press
HOLD End to exit Configuration mode.
Option 9 — Holiday Heat Set Point — This selection determines the heating set point (40 to 90 minus deadband F) when
the HOLIDAY function is active.
TO SELECT:
1. Enter Configuration mode. Use up and down buttons to
make small display (now flashing) indicate 09.
2. Press SET TIME/TEMP button once to flash large display.
3. Use up or down set point buttons to select desired
temperature.
4. Press SET TIME/TEMP button again to flash small
upper display for selection of another option, or press
HOLD End to exit Configuration mode.
Option 10 — Holiday Cool Set Point — This selection determines the cooling set point (40 to 90 minus deadband F) when
the HOLIDAY function is active.
TO SELECT:
1. Enter Configuration mode if not already there. Use up
and down set point buttons to make small display (now
flashing) indicate 10.
2. Press SET TIME/TEMP button once to flash large display.
3. Use up or down set point buttons to select desired
temperature.
4. Press SET TIME/TEMP button again to flash small upper display for selection of another option, or press
HOLD End to exit Configuration mode.
Option 11 — Holiday Humidity Set Point — This selection
determines the humidity set point (50 to 90% rh [relative
humidity]) when the HOLIDAY function is active.
NOTE: This value can only be changed in the installer software Configuration mode.
TO SELECT:
1. Enter Configuration mode. Use up and down set point
buttons to make small display (now flashing) indicate 11.
2. Press SET TIME/TEMP button once to flash large display.
3. Use up or down buttons to select desired humidity.
4. Press SET TIME/TEMP button again to flash small
upper display for selection of another option, or press
HOLD End to exit Configuration mode.
Option 13 — Room Temperature Offset Adjust — This option allows calibration (or deliberate miscalibration) of room
temperature sensor. There are various reasons why building
owners may want to have displayed temperature adjusted to a
higher or lower value. The selected number is number of
degrees, plus or minus, which will be added to actual
temperature. The numbers can range between –5 and +5.
Factory default is 0. This adjusted value will be used as actual
temperature for both display and control action. For example, if
2 is selected, 72 F actual will read 74 F. If set point is 72 F, the
room will control to an actual temperature of 70 F which will
be displayed and acted upon as if it were 72 F. The effect is that
a positive number selection will make the room temperature
lower and vice versa. The light commercial Thermidistat
device is calibrated within an accuracy of ± 1° F when shipped
from the factory, so this adjustment will provide the best
accuracy when set to 0.
TO SELECT:
1. Enter Configuration mode. Use up and down set point
buttons to make small display (now flashing) indicate 13.
2. Press SET TIME/TEMP button once to flash large display.
3. Use up or down set point buttons to move between –5,
–4, –3, –2, –1, 0, 1, 2, 3, 4, or 5 on large display. Factory
default is 0.
Step 5 — Conduct Light Commercial Thermidistat Start-Up and Checkout — The light commer-
cial Thermidistat device is designed with a built-in installer test
capability. It allows easy operation of equipment without
delays or set point adjustments to force heating or cooling. To
enable Installer Test mode, move DIP switch no. 4 to ON position. To access this switch, open case as described in Step 2 —
Set DIP Switches. Use the tip of a small screwdriver to slide
switch no. 4 to ON position.
45
If fixed temperatures are desired, push HOLD End button to
turn on HOLD icon. This will maintain set points, not allowing
them to change with programmed schedule.
During unoccupied periods the FAN button may be used to
select between AUTO (fan on only with equipment) and FAN
(fan on continuously) fan modes. During occupied periods the
fan is on continuously.
DEHUMIDIFICATION — Dehumidification is done only
during cooling. A dehumidification set point is available to the
owner in both occupied and unoccupied times. It can range from
50 to 90% relative humidity. When actual humidity is higher
than set point, a dehumidification demand exists. In the occupied period, the light commercial Thermidistat™ device
responds by activating its dehumidify output (DEHUM) turning
on the compressor in the energy recovery section; and when
a call for cooling exists, energizing the Humidi-MiZer™
solenoid in the 48/50HJ unit (if so equipped). The 62AQ
Energy$Recycler™ compressor will be started in the Occupied
mode even though a call for cooling does not exist; thus dehumidifying the outside air before it enters the building. In the
unoccupied period the humidistat will only energize the
Humidi-MiZer solenoid in the main unit.
However, if the humidity is below the set point in the
unoccupied period, a “mini” economizer mode will be initiated,
bringing in outside air to cool the space as the first stage
of cooling, provided the outdoor air thermostat in the energy
recovery section is below its set point.
HOLIDAY — A holiday selection is available specifically for
times where the building will not be occupied for an extended
period. For convenience, one button selects Holiday mode
which is indicated by “HOLIDAY” icon on LED display. Holiday mode also has an automatic hold, meaning that set points
are not affected by the programmed schedule. While in Holiday mode, the system provides temperature and humidity protection for the building in all seasons, but not comfort.
Holiday Set Points — The settings for HEAT, COOL, and
DEHUM should have been done in the Configuration mode
(Options 9,10, and 11).
While in Installer Test mode, clock will display “InSt,” FAN
button will control fan, and MODE button will control heating
and cooling.
TO TEST FAN:
NOTE: In the Installer Test mode the fan operation is not
dependent on the occupied signal.
Fan button switches FAN icon between AUTO and ON.
While ON is displayed, G output will be on, turning fan on.
Allow up to 10 seconds after button is pressed for fan to turn on
and off. On 3 through 121/2 ton energy recovery units, the fan
continues to operate for a minimum of 30 seconds after G
signal is removed.
NOTE: In other than the Installer Test mode the fan will run
continuously during the occupied periods. If auto fan is
selected, the fan will come on with a heating or cooling call
during the unoccupied periods and run continuously during the
occupied periods. The fan icon AUTO will be lit if auto fan is
selected and ON will be lit when the fan is on.
TO TEST COOLING AND DEHUMIDIFICATION:
Press MODE button until COOL icon turns on. Y1 cooling
begins within 10 seconds and remains on for 4 minutes. Two
minutes after Y1 comes on, the Y2 signal is energized for
2 minutes. At the end of 4-minute run, cooling stops and
MODE reverts to OFF. At any time during 4-minute run time,
cooling may be turned off by pressing MODE button until
OFF appears. While cooling is on, successive presses of
HUMIDITY button turns the dehumidify output on and off.
While this output is active, the “DEHUM” icon will be
energized.
TO TEST PRIMARY HEATING:
Press MODE button until HEAT icon turns on. W1 heating
begins within 10 seconds and remains on for 4 minutes. This
is the Recycling mode. If the outdoor temperature is below the
balance point it will also include first stage furnace or electric
heat in AC system. W1 will be on for 2 minutes followed by
second stage W2 for 2 minutes. If the outdoor temperature is
above the balance point, this second stage call will energize
first stage furnace or electric heat in AC system. If the outdoor
temperature is below the balance point, this second stage call
will energize second stage furnace or electric heat in AC
system. At the end of 4-minute run, heating stops, and MODE
reverts back to OFF. At any time during 4-minute run time,
heating may be turned off by pressing MODE button until
OFF appears. While heating is on, successive presses of
HUMIDITY button turn Occupied output on and off. While
this output is active, “OC” appears in cool set point display.
OPERATIONAL INFORMATION
There are two different controls available: a light commercial
Thermidistat device or a Humidstat in conjunction with a temperature sensor.
The light commercial Thermidistat device is a 7-day programmable, wall mounted, low voltage field-installed control.
It combines temperature and humidity control in a single unit
and provides separate set points for heating and cooling. The
control adds a dehumidification control function with separate
set points for up to 2 occupied and unoccupied periods per day.
Different heating and cooling set points and times are programmable for up to 4 periods per day 7 days per week. In case
of a power loss an internal memory stores programs and settings for unlimited time, and the clock continues to run for at
least 8 hours. Batteries are not used.
The light commercial Thermidistat device (or Humidistat
and temperature sensor) provides direct control of the energy
recovery section, rooftop unit fans, and rooftop unit compressor
in response to the programmed time schedules and temperature
settings. The dehumidification output signal controls the energy
recovery compressor to cool and dehumidify the supply air via
a relay.
Typical unit airflow is shown in Fig. 33. See Table 2A and
2B for operating information and system response.
Step 6 — Make Final Settings — Be sure to return
DIP switch no. 4 back to OFF position to exit Installer Test
mode. Assuming the system is to be left in operation after
installation is complete, use MODE button to select between
HEAT, COOL, or AUTO to provide desired operation of heating, cooling, or both.
The default set points and programmed schedule are
(ONLY ONE PERIOD IS PROGRAMMED):
OCCUPIED 1 = OCCUPIED 2 = 7:00 AM;
COOL = 76 F; HEAT = 72 F
DISPLAY WILL READ OC2
UNOCCUPIED 1 = UNOCCUPIED 2 = 5:00 PM;
COOL = 85 F; HEAT = 65 F
DISPLAY WILL READ UN2
If programmed schedule is to be used, make sure the HOLD
icon is off. The schedule is energized or deenergized by pushing the HOLD End button.
46
on the temperature and humidity requirements as sensed in
the space. Either a Carrier Thermidistat™ device (combined
temperature and humidity sensing capability) or separate
thermostat and humidistat can be used with the Humidi-MiZer
system. See Tables 3A and 3B for sequence of operation of
COBRA units equipped with the Humidi-MiZer dehumidification option.
Heating with Humidi-MiZer in Unoccupied Mode — In the
unoccupied mode, the Energy$Recycler (E$R) unit is off and
all compressors are locked off. First stage heat is rooftop section heat at 50%. Second stage heat is rooftop unit heat at
100%. See Table 3A.
Heating with Humidi-MiZer in Occupied Mode — In the occupied mode, when the E$R compressor runs in heat mode, it
extracts heat from the exhaust air and rejects heat to the incoming outdoor air, returning energy to the building that, otherwise,
would be wasted. The E$R and rooftop section fans run continuously. Rooftop section compressors are always off.
On a first stage call, the E$R compressor is on in heat mode.
If the outdoor air is above the set point, rooftop section heat is
off. Rooftop section heat is on at 50% if the outdoor air is below the set point. On a second stage call, the E$R compressor
is on in heat mode. Rooftop section heat is on at 50% if the outdoor air is above the set point. Rooftop section heat is on at
100% if the outdoor air is below the set point. See Table 3B.
NOTE: If there is a thermostat call from the space for heating,
all dehumidification (both subcooling mode and hot gas reheat
mode) will not operate.
MOISTUREMI$ER™ OPTION (Units prior to October
2004) — Units equipped with the MoistureMi$er dehumidification option have an up to 40% increase in latent capacity in
hot, humid climates. The MoistureMi$er dehumidification
option increases humidity control and comfort in the occupied
space by automatically lowering the evaporator coil temperature to optimum dehumidification levels while simultaneously
reheating the leaving air to prevent overcooling. The
MoistureMi$er capabilities have been incorporated into the
Humidi-MiZer system; the MoistureMi$er is no longer an
available option for units produced after October 2004.
Unoccupied Cooling Mode — During unoccupied
periods the system fans and compression will cycle in response
to the light commercial Thermidistat device’s (or Humidistat
and temperature sensor) temperature and humidity output signals to maintain space conditions at programmed set points.
During mild weather, if the outdoor temperature is below the
outside-air thermostat (OAT) set point, all compressor operation is locked off and the system operates in the economizer
mode to provide free cooling.
If outdoor air is unsuitable (humidity or air quality), then the
Energy$Recycler™ section will be off. If outdoor air is suitable, then both the Energy$Recycler section and the rooftop
section will be used for cooling. First stage of cooling is the
Energy$Recycler section in economizer mode. Second stage
of cooling energizes the Energy$Recycler and rooftop
compressors.
Occupied Cooling Mode — During occupied periods,
the Energy$Recycler fans and the rooftop unit’s fans run continuously to maintain proper airflow and ventilation rates. The
compressors in the Energy$Recycler section and the rooftop
unit cycle in response to the dehumidification and thermostat
output signals from the control to maintain proper temperature
and humidity levels.
Cooling Operation with the Humidi-MiZer™
Option (Units after October 2004) — Units equipped
with the Humidi-MiZer dehumidification option are capable of
increased humidity control by utilizing a common subcooling/
reheat dehumidification coil. This unique and innovative design
provides the capability of the rooftop section to operate in both a
subcooling mode and a hot gas reheat (HGRH) mode. A
48/50HJ rooftop unit equipped with the Humidi-MiZer system
can be used with or without a 62AQ Energy$Recycler™ unit.
See the Humidi-MiZer Application Data manual for additional
details.
The incorporation of the Humidi-MiZer adaptive dehumidification system on a COBRA™ unit adds significant flexibility to the overall system. The response of the Humidi-MiZer
system to varying space conditions is extremely dynamic. The
COBRA energy recovery unit or 48/50HJ rooftop unit
equipped with the Humidi-MiZer system will respond based
ROOFTOP UNIT
ENERGY RECOVERY SECTION
O
AT
MIXED AIR
CONDENSER
COMPRESSOR
R
EXHAUST AIR
EVAPORATOR
R
O
AP
EV
OUTSIDE AIR
ROOF LINE
a48-6493
ROOM AIR
Fig. 33 — Typical Unit Airflow Diagram
47
SUPPLY AIR
THERMIDISTAT/
HUMIDISTAT
Table 2A — COBRA™ Energy Recovery Unit Sequence of Operation — Unoccupied
COOLING
E$R Compressor
Indoor Temperature Above Y2*
Humidity Low & OAT Low
On
Humidity Low & OAT High
Off
Humidity High & OAT Low
Off
Humidity High & OAT High
Off
Indoor Temperature Between Y1 & Y2*
Humidity Low & OAT Low
Off
Humidity Low & OAT High
Off
Humidity High & OAT Low
Off
Humidity High & OAT High
Off
Indoor Temperature Below Y1
Humidity Low
Off
Humidity High
Off
NOTE: OAT < 55 F all compression off
HEATING
E$R Compressor
Indoor Temperature Above W1
Off
Indoor Temperature Between W1 & W2
Off
Indoor Temperature Below W2
Off
UNOCCUPIED
E$R Fans RTU Compressor 1 RTU Compressor 2* RTU Fans
RTU Heat
On (cyc.)
Off
Off
Off
On
On
On
On
Off
On
On
On
On (cyc.)
On (cyc.)
On (cyc.)
On (cyc.)
Off
Off
Off
Off
On (cyc.)
Off
Off
Off
Off
On
On
On
Off
Off
On
On
On (cyc.)
On (cyc.)
On (cyc.)
On (cyc.)
Off
Off
Off
Off
Off
Off
Off
On
Off
On
Off
On (cyc.)
Off
Off
E$R Fans RTU Compressor 1 RTU Compressor 2*
Off
Off
Off
Off
Off
Off
Off
Off
Off
LEGEND
E$R — Energy$Recycler™ Unit
OAT — Outdoor Air Temperature
RTU — Rooftop Unit
RTU Fans RTU Heat†
Off
Off
On (cyc.)
On, 50%
On (cyc.) On, 100%
*Second stage for Y2 call applicable on rooftop units with 2 circuits
only.
†50% rooftop unit heat only applicable with 2-stage electric or gas
heating units.
Table 2B — COBRA Energy Recovery Unit Sequence of Operation — Occupied
COOLING
Indoor Temperature Above Y2*
Humidity Low & OAT Low
Humidity Low & OAT High
Humidity High & OAT Low
Humidity High & OAT High
Indoor Temperature Between Y1 & Y2*
Humidity Low & OAT Low
Humidity Low & OAT High
Humidity High & OAT Low
Humidity High & OAT High
Indoor Temperature Below Y1
Humidity Low
Humidity High
NOTE: OAT < 55 F all compression off
OCCUPIED
E$R Compressor E$R Fans RTU Compressor 1 RTU Compressor 2* RTU Fans RTU Heat
On
On
On
On
On
On
On
On
On
On
On
On
Off
On
On
On
On
On
On
On
Off
Off
Off
Off
Off
On
On
On
On
On
On
On
Off
On
On
On
Off
Off
On
On
On
On
On
On
Off
Off
Off
Off
Off
On
On
On
Off
Off
Off
Off
On
On
Off
Off
HEATING
E$R Compressor E$R Fans RTU Compressor 1
Indoor Temperature Above W1
Off
On
Off
Indoor Temperature Between W1 & W2
OAT >Set Pt (30 F)
On
On
Off
OAT <Set Pt (30 F)
On
On
Off
Indoor Temperature Below W2
OAT >Set Pt (30 F)
On
On
Off
OAT <Set Pt (30 F)
On
On
Off
LEGEND
E$R — Energy$Recycler Unit
OAT — Outdoor Air Temperature
RTU — Rooftop Unit
RTU Compressor 2
Off
RTU Fans RTU Heat†
On
Off
Off
Off
On
On
Off
On, 50%
Off
Off
On
On
On, 50%
On, 100%
*Second stage for Y2 call applicable on rooftop units with 2 circuits
only.
†50% rooftop unit heat only applicable with 2-stage electric or gas
heating units.
48
Table 3A — Humidi-MiZer™ Adaptive Dehumidification System Rooftop with COBRA™ Energy Recovery Unit
Sequence of Operation — Unoccupied
COOLING
Indoor Temperature Above Y2
Humidity Low & OAT Low
Humidity Low & OAT High
Humidity High & OAT Low
Humidity High & OAT High
Indoor Temperature Between Y1 & Y2
Humidity Low & OAT Low
Humidity Low & OAT High
Humidity High & OAT Low
Humidity High & OAT High
Indoor Temperature Below Y1
Humidity Low
Humidity High
NOTE: OAT < 55 F all compression off
UNOCCUPIED
E$R Fan RTU Compressor 1 RTU Compressor 2
RTU Fans RTU Heat
On
Off
Off
Off
On (cyc.)
Off
Off
Off
On without SC
On without SC
On with SC
On with SC
Off
On without SC
On with SC
On with SC
On (cyc.)
On (cyc.)
On (cyc.)
On (cyc.)
Off
Off
Off
Off
Off
Off
Off
Off
On (cyc.)
Off
Off
Off
Off
On without SC
On with SC
On with SC
Off
Off
On with HGRH
On with HGRH
On (cyc.)
On (cyc.)
On (cyc.)
On (cyc.)
Off
Off
Off
Off
Off
Off
Off
Off
Off
On with HGRH
Off
On with HGRH
Off
On (cyc.)
Off
Off
E$R Compressor
HEATING
E$R Compressor E$R Fans RTU Compressor 1 RTU Compressor 2
Indoor Temperature Above W1
Off
Off
Off
Off
Indoor Temperature Between W1 & W2
Off
Off
Off
Off
Indoor Temperature Below W2
Off
Off
Off
Off
RTU Fans RTU Heat
Off
Off
On (cyc.)
On, 50%
On (cyc.) On, 100%
LEGEND
E$R — Energy$Recycler™ Unit RTU — Rooftop Unit
HGRH — Hot Gas Reheat
SC — Subcooling
OAT — Outdoor Air Temperature
Table 3B — Humidi-MiZer Adaptive Dehumidification System Rooftop with COBRA Energy Recovery Unit
Sequence of Operation — Occupied
COOLING
Indoor Temperature Above Y2
Humidity Low & OAT Low
Humidity Low & OAT High
Humidity High & OAT Low
Humidity High & OAT High
Indoor Temperature Between Y1 & Y2
Humidity Low & OAT Low
Humidity Low & OAT High
Humidity High & OAT Low
Humidity High & OAT High
Indoor Temperature Below Y1
Humidity Low
Humidity High
NOTE: OAT < 55 F all compression off
OCCUPIED
E$R Compressor E$R Fans RTU Compressor 1 RTU Compressor 2
RTU Fans RTU Heat
On
On
On
On
On
On
On
On
On without SC
On without SC
On with SC
On with SC
Off
On without SC
On with SC
On with SC
On
On
On
On
Off
Off
Off
Off
Off
On
On
On
On
On
On
On
Off
On without SC
On with SC
On with SC
Off
Off
On with HGRH
On with HGRH
On
On
On
On
Off
Off
Off
Off
Off
On
On
On
Off
On with HGRH
Off
On with HGRH
On
On
Off
Off
HEATING
E$R Compressor E$R Fans RTU Compressor 1 RTU Compressor 2
Indoor Temperature Above W1
Off
On
Off
Off
Indoor Temperature Between W1 & W2
OAT >Set Pt (30 F)
On
On
Off
Off
OAT <Set Pt (30 F)
On
On
Off
Off
Indoor Temperature Below W2
OAT >Set Pt (30 F)
On
On
Off
Off
OAT <Set Pt (30 F)
On
On
Off
Off
LEGEND
E$R — Energy$Recycler Unit
RTU — Rooftop Unit
HGRH — Hot Gas Reheat
SC — Subcooling
OAT — Outdoor Air Temperature
49
RTU Fans RTU Heat
On
Off
On
On
Off
On, 50%
On
On
On, 50%
On, 100%
AIRFLOW CONSIDERATIONS — A COBRA™ unit is
potentially capable of allowing up to 100% outdoor air (OA).
This application depends specifically on the air conditions and
the amount of airflow desired. For exact capabilities on specific
COBRA applications, refer to the Packaged Rooftop Builder
(PRB) selection software.
When configuring the COBRA unit, it is also important to
select the correct ratio of outdoor air to exhaust air. When using
the electronic selection software, the program will not allow
unacceptable ratios. In general, the exhaust airflow determines
the energy capacity available to condition the incoming outside
air. Typically, the exhaust air cfm must be at least 50% the
value of the OA cfm to satisfactorily precondition the OA.
Conversely, the OA flow must be great enough to properly
transfer energy from the OA coil.
Therefore, a minimum OA flow exists; the exhaust airflow
cannot be greater than the incoming OA flow. Additionally,
allowing the exhaust airflow to be greater than the incoming
outdoor airflow could result in space pressurization problems.
See Table 4 for minimum and maximum airflow
parameters.
Auto Changeover — When auto changeover mode is
selected, a change from heat to cool (or vice versa) will not occur until an opposite mode demand has existed for 10 minutes.
If set point is changed, the 10-minute requirement is deleted.
Power On Check — When AC power is first applied, all
segments of display are turned on for a few seconds. Following
this, temperature display indicates model/configuration via following 2-digit code: CP for commercial product. See Fig. 32.
Error Codes — If light commercial Thermidistat™
device cannot properly read room temperature, display will
indicate two dashes (--) and all outputs (except fan, if on) will
turn off.
E4 — If light commercial Thermidistat device’s internal
memory fails, “E4” will be displayed. Replace light
commercial Thermidistat device.
E5 — If light commercial Thermidistat device cannot properly read humidity, “E5” will be displayed. Replace
light commercial Thermidistat device.
Smart Recovery — With Smart Recovery selected (DIP
SW1 is on), transition out of setback begins a fixed time period
before selected recovery time and gradually adjusts room temperature so desired temperature will be achieved at selected
recovery time. The fixed time period is 1.5 hours. It operates in
both heating and cooling.
Table 4 — Factory Supported Rooftop Unit with
62AQ Unit Combination and Allowable Airflows
48/50HJ
UNIT SIZE
004-007
008-014
62AQ
MODEL
(E$R)
060
100
060*
100*
200
300
OUTDOOR AIR
CFM RANGE
(Min-Max)
300 - 600
500 - 1000
300 - 600
500 - 1000
1000 - 2000
1800 - 3000
EXHAUST
CFM RANGE
(Min-Max)
300 - 100% of OA Value
500 - 100% of OA Value
300 - 100% of OA Value
500 - 100% of OA Value
1000 - 100% of OA Value
1800 - 100% of OA Value
Outdoor-Air Dampers — The outdoor-air dampers of
the energy recovery section are fully adjustable. See Fig. 34.
SUPPLY-AIR DAMPERS — The supply-air damper is a motorized, two-position (open/closed), spring-return type damper.
There are 3 adjustable outdoor air intake stops (adjusts to 30,
45, 60, or 90 degrees open) to fix the amount of outdoor air
intake in economizer mode. The factory set position is
45 degrees. The supply air fan motor is a 3-speed motor that is
factory set for medium speed.
LEGEND
E$R — Energy$Recycler Unit
OA
— Outdoor Air
*This unit combination is available only when the 62AQ is field-installed as an
accessory.
Five-Minute
Compressor
Time
Guard
Device — This timer prevents compressor from starting
SUPPLY
AIR DAMPER
unless it has been off for at least 5 minutes. It can be defeated
for 1 cycle by simultaneously pressing FAN and UP buttons
simultaneously.
TWO-POSITION
OUTDOOR AIR DAMPER
STOPS (ADJUSTABLE)
Fifteen-Minute Staging Timer — In multistage heating or cooling, this timer prevents any higher stage from turning on until preceding stage has been on for 15 minutes. This
timer is not in effect if temperature difference is greater than
5° F (usually due to a large change in desired temperature).
Three-Minute Minimum On Time — In normal operation, when a stage turns on, it will not turn off for a minimum of 3 minutes.
Heat/Cool Set Points (Desired Temperature) — A minimum difference of 2° F is enforced between
heating and cooling desired temperatures. This is done by
allowing one setting to “push” the other to maintain this
difference. This difference is adjustable via Configuration
Option 14.
Equipment On Indicators — When cooling equipment is on, a COOL icon preceded by a small triangle is
displayed below cooling set point. While cooling equipment is
delayed by the Time Guard timer, triangle will flash. The same
is true for HEAT icon and its preceding triangle located under
heating set point.
BAROMETRIC RELIEF DAMPER
(IN EXHAUST HOOD)
a48-6827
Fig. 34 — Outdoor-Air Dampers
Dehumidify Output On Indicators — The DEHUM
icon is on when the dehumidification output is energized.
50
1. Run RTU supply fan at specified rpm. Do NOT run the
E$R fans.
2. Measure the return air static pressure at location B. See
Fig. 24.
3. Once the RTU return air static pressure is determined:
a. Plot the point on the appropriate exhaust fan
curve, using the measured return static pressure
and desired airflow.
b. If the plotted point does not fall on an existing
curve, adjust the position left or right until a curve
is reached. Each curve corresponds to a damper
position and fan speed. Follow the point vertically
down to find the actual airflow (cfm). This will be
the actual exhaust airflow of the 62AQ
Energy$Recycler unit.
NOTE: IF the E$R exhaust airflow is greater that
the supply airflow, the return plenum static pressure will become more negative when the 62AQ
fans are running. In this situation, the total static
load on the rooftop unit’s indoor ran motor is
increased and will operate at a higher power input
(watts).
c. Adjust the exhaust fan speed and damper position
according to the selected line from step (b).
4. Repeat Step 3 for the supply air fan and damper.
The supply fan is standard for COBRA units. If the supply
fan is not required, it can be left secured, or completely removed to reduce supply static pressure.
BAROMETRIC RELIEF DAMPERS — The barometric relief damper is located in the exhaust fan section. The damper
limiter can be set for 30, 45, or 60 degrees open (90 degrees
open is not required) based on cfm and fan speed. The exhaust
air fan motor is a 3-speed motor that is factory set for medium
speed.
MULTIPLE STAGE COOLING CONTROL — Stage 1 is
free cooling by opening the supply-air dampers and bringing in
cool outside air. Stage 2 is efficient cooling with the energy
recovery section as outdoor temperatures rise. Stage 3 is
cooling operation of the rooftop section during peak outdoor
conditions.
When installing a COBRA™ energy recovery unit, all fans
and dampers must be balanced to achieve the proper unit
airflow. In addition to the base unit’s indoor fan, the 62AQ
Energy$Recycler™ section has an exhaust damper, exhaust
fan, supply damper and optional supply fan. The optional
supply fan may be required if the return air static pressure is too
low. See the 62AQ system fan curves (Fig. 35-70) or the
Packaged RTU Builder selection software to determine if a
supply fan is required for each application.
If proper setting for E$R supply fan and damper and
exhaust fan and damper have not been determined, make the
following adjustments using the appropriate 62AQ system fan
curves.
After balancing the base rooftop unit (RTU) per the base
unit installation instructions, make sure unit filters and all
panels are in place.
51
0.00
RETURN DUCT
STATIC PRESSURE
(IN. WG)
-0.10
a62-288
-0.20
-0.30
-0.40
350
400
450
500
550
AIRFLOW (CFM)
600
650
700
750
LEGEND
Damper at 30 Degrees Open
Damper at 45 Degrees Open
Damper at 60 Degrees Open
Damper at 90 Degrees Open
High Speed
Med Speed
- - - - - - Low Speed
U —
—
—
—
•
Fig. 35 — 62AQ060 Exhaust Fan Performance Curve (208v)
High Speed - all damper positions
150
Med Speed - all damper positions
100
Low Speed - all damper positions
350
a62-289
450
550
650
AIRFLOW (CFM)
Fig. 36 — 62AQ060 Exhaust Fan Power Curve (208v)
52
50
750
FAN POWER (WATTS)
200
RETURN DUCT
STATIC PRESSURE
(IN. WG)
0.00
-0.10
-0.20
-0.30
-0.40
400
450
a62-290
500
550
600
650
700
750
AIRFLOW (CFM)
LEGEND
Damper at 30 Degrees Open
Damper at 45 Degrees Open
Damper at 60 Degrees Open
Damper at 90 Degrees Open
High Speed
Med Speed
- - - - - - Low Speed
U —
—
—
—
•
Fig. 37 — 62AQ060 Exhaust Fan Performance Curve (230v)
High Speed - all damper positions
200
150
Med Speed - all damper positions
100
Low Speed - all damper positions
350
a62-291
450
550
650
AIRFLOW (CFM)
Fig. 38 — 62AQ060 Exhaust Fan Power Curve (230v)
53
50
750
FAN POWER (WATTS)
250
0.00
RETURN DUCT
STATIC PRESSURE
(IN. WG)
-0.10
-0.20
-0.30
-0.40
-0.50
-0.60
500
550
600
650
700
750
a62-292
800
850
900
950
1000
1050
1100
AIRFLOW (CFM)
LEGEND
Damper at 30 Degrees Open
Damper at 45 Degrees Open
Damper at 60 Degrees Open
Damper at 90 Degrees Open
High Speed
Med Speed
- - - - - - Low Speed
U —
—
—
—
•
Fig. 39 — 62AQ100 Exhaust Fan Performance Curve (208v)
600
500
Med Speed - all damper positions
Low Speed - all damper positions
500
a62-293
600
700
400
800
900
1000
1100
AIRFLOW (CFM)
Fig. 40 — 62AQ100 Exhaust Fan Power Curve (208v)
54
300
1200
FAN POWER (WATTS)
High Speed - all damper positions
0.00
RETURN DUCT
STATIC PRESSURE
(IN. WG)
-0.10
-0.20
-0.30
-0.40
-0.50
-0.60
-0.70
600
650
700
750
800
a62-294
850
900
950
1000
1050
1100
AIRFLOW (CFM)
LEGEND
Damper at 30 Degrees Open
Damper at 45 Degrees Open
Damper at 60 Degrees Open
Damper at 90 Degrees Open
High Speed
Med Speed
- - - - - - Low Speed
U —
—
—
—
•
Fig. 41 — 62AQ100 Exhaust Fan Performance Curve (230v)
650
High Speed - all damper positions
Med Speed - all damper positions
550
500
Low Speed - all damper positions
450
400
600
a62-295
700
800
900
1000
1100
AIRFLOW (CFM)
Fig. 42 — 62AQ100 Exhaust Fan Power Curve (230v)
55
350
1200
FAN POWER (WATTS)
600
-0.10
RETURN DUCT
STATIC PRESSURE
(IN. WG)
-0.20
-0.30
-0.40
-0.50
-0.60
-0.70
1100
1200
1300
1400
1500
a62-296
1600
1700
1800
1900
2000
2100
AIRFLOW (CFM)
LEGEND
Damper at 30 Degrees Open
Damper at 45 Degrees Open
Damper at 60 Degrees Open
Damper at 90 Degrees Open
High Speed
Med Speed
- - - - - - Low Speed
U —
—
—
—
•
Fig. 43 — 62AQ200 Exhaust Fan Performance Curve (208v)
750
High Speed - all damper positions
650
600
550
Med Speed - all damper positions
500
450
400
Low Speed - all damper positions
1100
a62-297
1200
1300
1400
1500
1600
1700
1800
AIRFLOW (CFM)
Fig. 44 — 62AQ200 Exhaust Fan Power Curve (208v)
56
1900
350
2000
FAN POWER (WATTS)
700
-0.10
RETURN DUCT
STATIC PRESSURE
(IN. WG)
-0.20
-0.30
-0.40
-0.50
-0.60
-0.70
1100
1200
1300
1400
1500
a62-298
1600
1700
1800
1900
2000
2100
AIRFLOW (CFM)
LEGEND
Damper at 30 Degrees Open
Damper at 45 Degrees Open
Damper at 60 Degrees Open
Damper at 90 Degrees Open
High Speed
Med Speed
- - - - - - Low Speed
U —
—
—
—
•
Fig. 45 — 62AQ200 Exhaust Fan Performance Curve (230v)
750
High Speed - all damper positions
650
Med Speed - all damper positions
550
450
Low Speed - all damper positions
1100
a62-299
1200
1300
1400
1500
1600
1700
1800
1900
AIRFLOW (CFM)
Fig. 46 — 62AQ200 Exhaust Fan Power Curve (230v)
57
350
2000
FAN POWER (WATTS)
850
-0.10
RETURN DUCT
STATIC PRESSURE
(IN. WG)
-0.20
-0.30
-0.40
-0.50
-0.60
-0.70
1100
1200
1300
1400
1500
a62-300
1600
1700
1800
1900
2000
2100
AIRFLOW (CFM)
LEGEND
Damper at 30 Degrees Open
Damper at 45 Degrees Open
Damper at 60 Degrees Open
Damper at 90 Degrees Open
High Speed
Med Speed
- - - - - - Low Speed
U —
—
—
—
•
Fig. 47 — 62AQ200 Exhaust Fan Performance Curve (460v)
900
High Speed - all damper positions
700
Med Speed - all damper positions
600
500
Low Speed - all damper positions
1100
a62-301
1200
1300
1400
1500
1600
1700
1800
1900
AIRFLOW (CFM)
Fig. 48 — 62AQ200 Exhaust Fan Power Curve (460v)
58
2000
400
2100
FAN POWER (WATTS)
800
-0.10
DAMPER STOP
30 DEG
DAMPER STOP
45 DEG
NO DAMPER
STOP
RETURN DUCT
STATIC PRESSURE
(IN. WG)
-0.20
-0.30
-0.40
-0.50
-0.60
PULLEY 5 TURNS OPEN
-0.70
1700
1800
1900
2000
2100
2200
2300
2400
a62-302
U
X
2600
2700
2800
2900
3000
3100
AIRFLOW (CFM)
LEGEND
Pulley 0 Turns Open
Pulley 1 Turn Open
Pulley 2 Turns Open
Pulley 3 Turns Open
Pulley 4 Turns Open
Pulley 5 Turns Open
Fig. 49 — 62AQ300 Exhaust Fan Performance Curve (230v)
2500
PULLEY
CLOSED
PULLEY 1
TURN OPEN
2000
PULLEY 2
TURNS OPEN
1500
PULLEY 3
TURNS OPEN
DAMPER 45 DEG
PULLEY 4
TURNS OPEN
DAMPER 90 DEG
1000
DAMPER 30 DEG
500
PULLEY 5 TURNS OPEN
1700
1800
a62-303
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
2900
AIRFLOW (CFM)
Fig. 50 — 62AQ300 Exhaust Fan Power Curve (230v)
59
3000
0
3100
FAN POWER (WATTS)
•
2500
3200
0.50
0.40
RETURN DUCT
STATIC PRESSURE
(IN. WG)
0.30
0.20
0.10
0.00
-0.10
-0.20
-0.30
-0.40
-0.50
-0.60
350
400
450
------
600
650
LEGEND
Damper at 30 Degrees Open
Damper at 45 Degrees Open
Damper at 60 Degrees Open
Damper at 90 Degrees Open
No Fan
High Speed
Med Speed
Low Speed
Fig. 51 — 62AQ060 Supply Fan Performance Curve (208v)
300
250
High Speed - all damper positions
200
150
Med Speed - all damper positions
100
Low Speed - all damper positions
50
300
400
a62-305
500
600
0
700
AIRFLOW (CFM)
Fig. 52 — 62AQ060 Supply Fan Power Curve (208v)
60
FAN POWER (WATTS)
•
550
AIRFLOW (CFM)
a62-304
U —
—
—
—
500
700
750
0.50
0.40
RETURN DUCT
STATIC PRESSURE
(IN. WG)
0.30
0.20
0.10
0.00
-0.10
-0.20
-0.30
-0.40
-0.50
-0.60
350
450
550
a62-306
•
------
750
AIRFLOW (CFM)
LEGEND
Damper at 30 Degrees Open
Damper at 45 Degrees Open
Damper at 60 Degrees Open
Damper at 90 Degrees Open
No Fan
High Speed
Med Speed
Low Speed
Fig. 53 — 62AQ060 Supply Fan Performance Curve (230v)
300
250
High Speed - all damper positions
200
150
Med Speed - all damper positions
100
Low Speed - all damper positions
50
300
a62-307
400
500
600
AIRFLOW (CFM)
Fig. 54 — 62AQ060 Supply Fan Power Curve (230v)
61
0
700
FAN POWER (WATTS)
U —
—
—
—
650
0.80
0.70
0.60
0.50
RETURN DUCT
STATIC PRESSURE
(IN. WG)
0.40
0.30
0.20
0.10
0.00
-0.10
-0.20
-0.30
-0.40
-0.50
-0.60
400
500
600
700
800
900
1000
1100
AIRFLOW (CFM)
a62-308
LEGEND
Damper at 30 Degrees Open
Damper at 45 Degrees Open
Damper at 60 Degrees Open
Damper at 90 Degrees Open
No Fan
High Speed
Med Speed
- - - - - - Low Speed
U —
—
—
—
•
Fig. 55 — 62AQ100 Supply Fan Performance Curve (208v)
550
450
High Speed - with damper at 30 degrees
350
Med Speed - all damper positions
Low Speed - all damper positions
550
a62-309
650
750
850
950
AIRFLOW (CFM)
Fig. 56 — 62AQ100 Supply Fan Power Curve (208v)
62
250
1050
FAN POWER (WATTS)
High Speed - with damper at 90 and 60 degrees
0.90
0.80
0.70
0.60
RETURN DUCT
STATIC PRESSURE
(IN. WG)
0.50
0.40
0.30
0.20
0.10
0.00
-0.10
-0.20
-0.30
-0.40
-0.50
-0.60
500
600
700
800
a62-310
900
1000
1100
AIRFLOW (CFM)
LEGEND
Damper at 30 Degrees Open
Damper at 45 Degrees Open
Damper at 60 Degrees Open
Damper at 90 Degrees Open
No Fan
High Speed
Med Speed
- - - - - - Low Speed
U —
—
—
—
•
Fig. 57 — 62AQ100 Supply Fan Performance Curve (230v)
700
High Speed - all damper positions
500
Med Speed - all damper positions
400
Low Speed - all damper positions
600
a62-311
700
800
900
1000
1100
AIRFLOW (CFM)
Fig. 58 — 62AQ100 Supply Fan Power Curve (230v)
63
300
1200
FAN POWER (WATTS)
600
0.90
0.80
0.70
RETURN DUCT
STATIC PRESSURE
(IN. WG)
0.60
0.50
0.40
0.30
0.20
0.10
0.00
-0.10
-0.20
-0.30
-0.40
-0.50
-0.60
1000
1100
1200
1300
1400
1500
•
------
1700
1800
1900
2000
AIRFLOW (CFM)
a62-312
U —
—
—
—
1600
LEGEND
Damper at 30 Degrees Open
Damper at 45 Degrees Open
Damper at 60 Degrees Open
Damper at 90 Degrees Open
No Fan
High Speed
Med Speed
Low Speed
Fig. 59 — 62AQ200 Supply Fan Performance Curve (208v)
500
High Speed - all damper positions
Med Speed - all damper positions
Low Speed - all damper positions
400
1000
a62-313
1100
1200
1300
1400
1500
1600
1700
1800
AIRFLOW (CFM)
Fig. 60 — 62AQ200 Supply Fan Power Curve (208v)
64
1900
300
2000
FAN POWER (WATTS)
600
RETURN DUCT
STATIC PRESSURE
(IN. WG)
0.90
0.80
0.70
0.60
0.50
0.40
0.30
0.20
0.10
0.00
-0.10
-0.20
-0.30
-0.40
-0.50
-0.60
1100
1200
1300
1400
1500
1600
1700
1800
1900
2000
AIRFLOW (CU FT/MIN)
a62-314
LEGEND
Damper at 30 Degrees Open
Damper at 45 Degrees Open
Damper at 60 Degrees Open
Damper at 90 Degrees Open
No Fan
High Speed
Med Speed
- - - - - - Low Speed
U —
—
—
—
•
Fig. 61 — 62AQ200 Supply Fan Performance Curve (230v)
700
High Speed - all damper positions
600
Low Speed - all damper positions
500
Med Speed - all damper positions
400
1000
a62-315
1100
1200
1300
1400
1500
1600
1700
1800
AIRFLOW (CFM)
Fig. 62 — 62AQ200 Supply Fan Power Curve (230v)
65
1900
300
2000
FAN POWER (WATTS)
800
0.90
0.80
0.70
0.60
RETURN DUCT
STATIC PRESSURE
(IN. WG)
0.50
0.40
0.30
0.20
0.10
0.00
-0.10
-0.20
-0.30
-0.40
-0.50
-0.60
1100
1200
1300
1400
1500
1600
1700
1800
1900
AIRFLOW (CFM)
2000
a62-316
LEGEND
Damper at 30 Degrees Open
Damper at 45 Degrees Open
Damper at 60 Degrees Open
Damper at 90 Degrees Open
No Fan
High Speed
Med Speed
- - - - - - Low Speed
U —
—
—
—
•
Fig. 63 — 62AQ200 Supply Fan Performance Curve (460v)
1000
High Speed - all damper positions
800
700
Med Speed - all damper positions
600
Low Speed - all damper positions
500
1000
a62-317
1100
1200
1300
1400
1500
1600
1700
1800
AIRFLOW (CFM)
Fig. 64 — 62AQ200 Supply Fan Power Curve (460v)
66
1900
400
2000
FAN POWER (WATTS)
900
0.60
0.50
0.40
0.30
RETURN DUCT
STATIC PRESSURE
(IN. WG)
0.20
0.10
0.00
-0.10
-0.20
-0.30
-0.40
-0.50
-0.60
-0.70
-0.80
-0.90
-1.00
1900
2000
2100
2200
2300
a62-318
2400
2500
2600
2700
2800
2900
3000
AIRFLOW (CU FT/MIN)
LEGEND
Damper at 30 Degrees Open
Damper at 45 Degrees Open
Damper at 60 Degrees Open
Damper at 90 Degrees Open
No Fan
High Speed
Med Speed
- - - - - - Low Speed
U —
—
—
—
•
Fig. 65 — 62AQ300 Supply Fan Performance Curve (208v)
1400
1300
1200
1100
Med Speed - all damper positions
1000
900
Low Speed - all damper positions
800
1800
a62-319
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
AIRFLOW (CFM)
Fig. 66 — 62AQ300 Supply Fan Power Curve (208v)
67
2900
700
3000
FAN POWER (WATTS)
High Speed - all damper positions
RETURN DUCT
STATIC PRESSURE
(IN. WG)
0.90
0.80
0.70
0.60
0.50
0.40
0.30
0.20
0.10
0.00
-0.10
-0.20
-0.30
-0.40
-0.50
-0.60
-0.70
-0.80
-0.90
1900
2000
2100
2200
2300
2400
2500
a62-320
•
------
2700
2800
2900
3000
3100
3200
3300
AIRFLOW (CFM)
LEGEND
Damper at 30 Degrees Open
Damper at 45 Degrees Open
Damper at 60 Degrees Open
Damper at 90 Degrees Open
No Fan
High Speed
Med Speed
Low Speed
Fig. 67 — 62AQ300 Supply Fan Performance Curve (230v)
1500
1400
High Speed - all damper positions
1300
1200
Med Speed - all damper positions
1100
1000
Low Speed - all damper positions
900
1800
a62-321
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
AIRFLOW (CFM)
Fig. 68 — 62AQ300 Supply Fan Power Curve (230v)
68
2900
800
3000
FAN POWER (WATTS)
U —
—
—
—
2600
RETURN DUCT
STATIC PRESSURE
(IN. WG)
0.90
0.80
0.70
0.60
0.50
0.40
0.30
0.20
0.10
0.00
-0.10
-0.20
-0.30
-0.40
-0.50
-0.60
-0.70
-0.80
-0.90
1900
2000
2100
2200
2300
2400
a62-322
•
------
2600
2700
2800
2900
3000
AIRFLOW (CFM)
LEGEND
Damper at 30 Degrees Open
Damper at 45 Degrees Open
Damper at 60 Degrees Open
Damper at 90 Degrees Open
No Fan
High Speed
Med Speed
Low Speed
Fig. 69 — 62AQ300 Supply Fan Performance Curve (460v)
1700
1600
High Speed - all damper positions
1500
1400
1300
Med Speed - all damper positions
1200
1100
1000
Low Speed - all damper positions
1800
a62-323
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
AIRFLOW (CFM)
Fig. 70 — 62AQ300 Supply Fan Power Curve (460v)
69
2900
900
3000
FAN POWER (WATTS)
U —
—
—
—
2500
5. Verify the following:
a. If installed, ensure optional supply and exhaust
blower wheel set screws are tight and wheels are
centered within the blower housing.
b. Make sure supply and exhaust air filters are in
place.
c. Make sure the condensate drain is of correct
dimensions and primed with water to ensure
proper drainage.
d. Reinstall all access panels.
e. Ensure all tools and miscellaneous parts have been
removed.
PRE-START-UP
Failure to observe the following warnings could result in
serious personal injury.
1. Follow recognized safety practices and wear protective goggles and gloves when checking or servicing
refrigerant system.
2. Do not operate compressor or provide any electric
power to unit unless compressor terminal cover is in
place and secured.
3. Do not remove compressor terminal cover until
all electrical sources are disconnected and tagged
accordingly.
4. Relieve all pressure from system before touching or
disturbing any connections inside compressor terminal
box. If refrigerant leak is suspected around compressor
terminals, use accepted methods to recover refrigerant.
5. Never attempt to repair or solder any components
while refrigerant system is under pressure.
6. Do not use torch to remove any component. System
contains oil and refrigerant under pressure. To remove
a component, wear protective goggles and gloves and
proceed as follows:
a. Shut off electrical power to unit and tag
disconnect.
b. Recover refrigerant to relieve all pressure from
system, using both high-pressure and lowpressure ports.
c. Cut component connection tubing with tubing
cutter, and remove component from unit.
d. Carefully unsweat remaining tubing stubs
when necessary. Oil can ignite when exposed to
torch flame.
START-UP
Refer to the 48/50HJ Installation Instructions for information on Start-Up for the rooftop unit section.
Unit Preparation — Make sure the unit has been installed in accordance with installation instructions and applicable codes.
Supply and Exhaust Filters — Make sure filters are
correctly installed on unit. Do not operate without filters in
place.
Outdoor-Air Inlet Screens — Outdoor-air inlet screen(s)
must be in place before operating the unit.
Compressor Mounting — Compressors are internally
spring-mounted. Ensure wooden shipping block has been
removed from under the compressor and holddown bolts are in
place.
Internal Wiring — Check all low and high voltage connections for proper locations. Ensure connections are tight.
Cooling — Set light commercial Thermidistat™ mode
selection to Cooling and fan mode to Auto. Ensure thermostat
has been adjusted to a setting below room temperature. Refer to
Light Commercial Thermidistat Accessory section for correct
unit operation.
Refer to 48/50HJ Installation Instructions for Pre-Start-Up
information for the rooftop unit section. Proceed as follows to
inspect and prepare the unit for initial start-up:
1. Remove filter access panel, blower access panel, and control panel access cover on the energy recovery section.
2. Read and follow instructions on all WARNING,
CAUTION, and INFORMATION labels attached to (or
shipped with) unit.
3. Make the following inspections:
a. Inspect for shipping or handling damages such as
broken lines, loose parts, or disconnected wires.
b. Inspect for oil at all refrigerant tubing connections
and on unit base. Detecting oil usually indicates a
refrigerant leak. Leak-test all refrigerant tubing
connections using an electronic leak detector,
halide torch, or liquid-soap solution.
c. Inspect all field and factory wiring connections Be
sure that connections are completed and tight.
d. Inspect upper (supply) and lower (exhaust) coils
for damage and refrigerant leaks. If fin damage is
noted, carefully straighten fins using a fin comb.
4. Tighten compressor holddown bolts to 5.5 to 6.5 ft-lb of
torque.
Heating — Set light commercial Thermidistat mode selection to Heating and fan mode to Auto. Ensure thermostat has
been adjusted to a setting below room temperature. Refer to
Light Commercial Thermidistat Accessory section for correct
unit operation.
Operating Sequence — Refer to Step 5 — Conduct
Light Commercial Thermidistat Start-Up and Checkout on
page 45, and Tables 2A and 2B for Energy$Recycler™ section
operating sequences.
SERVICE
Refer to base unit installation instructions or 62AQ Installation Instruction for all service information.
Fuse Box (48HJ012,014 — 208/230-3-60 Units
Only) — Certain 48HJ units contain fuses for the power sup-
ply. The fuse box is located in the compressor section in a
single point box. See Fig. 71. Replacement fuses are cartridge
type, non-renewable, time delay FRN type of the appropriate
size and voltage. Refer to existing fuse size and voltage for
replacement.
70
a48-6463
Fig. 71 — Fuse Box (48HJ012,014 — 208/230-3-60 Units Only)
71
TROUBLESHOOTING
Use Tables 5 and 6, and Fig. 72-79 when troubleshooting this unit.
NOTES:
1. If any of the original wire furnished must be
replaced, it must be replaced with Type 90 C
wire or its equivalent.
2. TRAN is wired for 230-v unit. If unit is to be run
with 208-v power supply, disconnect BLK wire
from 230-v tap (ORN) and connect to 208-v tap
(RED). Insulate end of 230-v tap.
3. Use copper, copper clad aluminum conductor.
a50-8017
Fig. 72 — COBRA™ Unit Wiring Schematic (50HJ006 with 62AQ060/100, 208/230-3-60)
with Electro-Mechanical Controls
LEGEND FOR FIG. 72-79
C
CAP
CB
CC
CER
CH
CLO
COC
COH
COMP
CR
CTD
DB
DFT
DM
DR
EFC
EQUIP
FC
FPT
FR
FU
GND
GVR
HM
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Contactor
Capacitor
Circuit Breaker
Compressor Contactor
Compressor Energy Recovery section
Crankcase Heater
Compressor Lockout
Cool Changeover Relay
Heat Changeover Relay
Compressor Motor
Cooling Relay
Compressor Time Delay
Defrost Board
Defrost Thermostat
Damper Motor
Defrost Relay
Exhaust Fan Contactor
Equipment
Supply Fan Contactor
Freeze-Up Protection Thermostat
Fan Relay
Fuse
Ground
Gas Valve Relay
Humidity Relay
HPS
HR
HS
I
IDM
IFC
IFM
IGC
LTLO
LPS
LS
LSM
MGV
OATC
OATH
OCR
OFC
OFM
OLR
PL
QT
RS
RTU
RVS
SAT
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
High-Pressure Switch
Heating Relay
Hall Effect Sensor
Ignitor
Induced Draft Motor
Indoor Fan Contactor
Indoor Fan Motor
Integrated Gas Unit Control (48HJ only)
Low Temp Cooling Lockout
Low-Pressure Switch
Limit Switch
Limit Switch (Manual)
Main Gas Valve
Outdoor-Air Thermostat (Cool)
Outdoor-Air Thermostat (Heat)
Occupied Relay
Outdoor Fan Contactor
Outdoor Fan Motor
Overload Relay
Plug Assembly
Quadruple Terminal
Rollout Switch
Rooftop Unit
Reversing Valve Solenoid
Supply Air Temperature
72
SEN
TB
TDR
TRAN
—
—
—
—
Sensor
Terminal Block
Time Delay Relay
Transformer
Field Splice
Marked Wire
Terminal (Marked)
Terminal (Unmarked)
Terminal Block
Splice
Splice (Marked)
Factory Wiring
Field Control Wiring
Field Power Wiring
Accessory or Optional Wiring
To indicate common potential
only. Not to represent wiring.
a50-8018
Fig. 72 — COBRA™ Unit Wiring Schematic (50HJ006 with 62AQ060/100, 208/230-3-60)
with Electro-Mechanical Controls (cont)
73
NOTES:
1. If any of the original wire furnished must be replaced, it must
be replaced with Type 90 C wire or its equivalent.
2. Three phase motors are protected under primary single
phasing conditions.
3. TRAN is wired for 230v unit. If unit is to be run with 208v
power supply, disconnect BLK wire from 230v tap (ORN) and
connect to 200v tap.
4. IFMOVL not present with size 012 high static.
5. Use copper, copper clad aluminum or aluminum conductors.
HJ008/009
a48-8165
Fig. 73 — COBRA™ Unit Wiring Schematic (48HJ008-012 with 62AQ200, 208/230-3-60)
with Electro-Mechanical Controls
74
HJ012
a48-8166
Fig. 73 — COBRA™ Unit Wiring Schematic (48HJ008-012 with 62AQ200, 208/230-3-60)
with Electro-Mechanical Controls (cont)
75
NOTES:
1. If any of the original wire furnished must be replaced, it must
be replaced with Type 90 C wire or its equivalent.
2. Three phase motors are protected under primary single
phasing conditions.
3. TRAN is wired for 230v unit. If unit is to be run with 208v
power supply, disconnect BLK wire from 230v tap (ORN)
and connect to 200v tap.
4. IFMOVL not present with size 012 high static.
5. Use copper, copper clad aluminum or aluminum conductors.
a50-8019
Fig. 74 — COBRA™ Unit Wiring Schematic (50HJ008/009 with 62AQ300, 208/230-3-60)
with Electro-Mechanical Controls
76
a50-8020
Fig. 74 — COBRA™ Unit Wiring Schematic (50HJ008/009 with 62AQ300, 208/230-3-60)
with Electro-Mechanical Controls (cont)
77
NOTES:
1. If any of the original wire furnished must be replaced, it must
be replaced with Type 90 C wire or its equivalent.
2. Three phase motors are protected under primary single
phasing conditions.
3. IFMOVL not present with size 012 high static or 014 std. mtr.
4. Use copper, copper clad aluminum or aluminum conductors.
a50-8021
Fig. 75 — COBRA™ Unit Wiring Schematic (50HJ014 with 62AQ300, 460-3-60)
with Electro-Mechanical Controls
78
a50-8022
Fig. 75 — COBRA™ Unit Wiring Schematic (50HJ014 with 62AQ300, 460-3-60)
with Electro-Mechanical Controls (cont)
79
a48-8167
NOTES:
1. If any of the original wire furnished must be replaced, it must
be replaced with Type 90 C wire or its equivalent.
2. Three phase motors are protected under primary single
phasing conditions.
3. Use copper conductors only.
4. To program PremierLink™:
a. Aux output for Pin 3, J8 must be set on exhaust fan.
b. In service configuration, set power exhaust to continuous.
Fig. 76 — COBRA™ Unit Wiring Schematic (48HJ006/007 with 62AQ060/100, 460-3-60)
with Factory-Installed PremierLink™ Controller
80
a48-8168
Fig. 76 — COBRA™ Unit Wiring Schematic (48HJ006/007 with 62AQ060/100, 460-3-60)
with Factory-Installed PremierLink™ Controller (cont)
81
a50-8023
NOTES:
1. If any of the original wire furnished must be replaced, it must
be replaced with Type 90 C wire or its equivalent.
2. Three phase motors are protected under primary single
phasing conditions.
3. IFMOVL not present with size 012 high static.
4. Use copper conductors only.
5. To program PremierLink™:
a. Aux output for Pin 3, J8 must be set on exhaust fan.
b. In service configuration, set power exhaust to continuous.
Fig. 77 — COBRA™ Unit Wiring Schematic (50HJ008-014 with 62AQ200, 460-3-60)
with Factory-Installed PremierLink™ Controller
82
a50-8024
Fig. 77 — COBRA™ Unit Wiring Schematic (50HJ008-014 with 62AQ200, 460-3-60)
with Factory-Installed PremierLink™ Controller (cont)
83
a50-8025
NOTES:
1. If any of the original wire furnished must be replaced, it must
be replaced with Type 90 C wire or its equivalent.
2. Three phase motors are protected under primary single
phasing conditions.
3. TRAN is wired for 230v unit. If unit is to be run with 208v
power supply, disconnect BLK wire from 230v tap (ORN) and
connect to 200v tap.
4. Use copper, copper clad aluminum or aluminum conductors.
5. To program PremierLink™:
a. Aux output for Pin 3, J8 must be set on exhaust fan.
b. In service configuration, set power exhaust to continuous.
Fig. 78 — COBRA™ Unit Wiring Schematic (50HJ008/009 with 62AQ300, 208/230-3-60)
with Factory-Installed PremierLink™ Controller
84
a50-8026
Fig. 78 — COBRA™ Unit Wiring Schematic (50HJ008/009 with 62AQ300, 208/230-3-60)
with Factory-Installed PremierLink™ Controller (cont)
85
a50-8027
NOTES:
1. If any of the original wire furnished must be replaced, it must be
replaced with Type 90 C wire or its equivalent.
2. Three phase motors are protected under primary single phasing
conditions.
3. TRAN is wired for 230v unit. If unit is to be run with 208v power
supply, disconnect BLK wire from 230v tap (ORN) and connect to
200v tap.
4. Use copper, copper clad aluminum or aluminum conductors only.
5. To program PremierLink™:
a. Aux output for Pin 3, J8 must be set on exhaust fan.
b. In service configuration, set power exhaust to continuous.
Fig. 79 — COBRA™ Unit Wiring Schematic (50HJ008/009 with 62AQ300, 208/230-3-60)
with Factory-Installed PremierLink™ Controller
86
a50-8028
NOTES:
1. If any of the original wire furnished must be replaced, it must be
replaced with Type 90 C wire or its equivalent.
2. Three phase motors are protected under primary single phasing
conditions.
3. TRAN is wired for 230v unit. If unit is to be run with 208v power
supply, disconnect BLK wire from 230v tap (ORN) and connect to
200v tap.
4. Use copper, copper clad aluminum or aluminum conductors only.
5. To program PremierLink™:
a. Aux output for Pin 3, J8 must be set on exhaust fan.
b. In service configuration, set power exhaust to continuous.
Fig. 79 — COBRA™ Unit Wiring Schematic (50HJ008/009 with 62AQ300, 208/230-3-60)
with Factory-Installed PremierLink™ Controller (cont)
87
Table 5 — Heating and Cooling Troubleshooting
PROBLEM
CAUSE
Compressor and Outdoor Fan Power failure.
Will Not Start.
Fuse blown or circuit breaker tripped.
Defective thermostat, contactor, transformer, control relay, or capacitor.
Insufficient line voltage.
Incorrect or faulty wiring.
Light Commercial Thermidistat™ program in UC1
or UC2 mode.
Defective fan motor.
Compressor Will Not Start but Faulty wiring or loose connection in compressor
Outdoor Fan Runs.
circuit.
Compressor motor burned out, seized, or internal
overload open.
Defective run/start capacitor, overload, start relay,
Time Guard device.
No DEHUM signal from light commercial
Thermidistat device.
Time Guard device not timed out.
Compressor Cycles (Other
Refrigerant overcharge or undercharge.
than Normally Satisfying
Thermostat).
Defective compressor.
Insufficient line voltage.
Blocked outdoor coil or dirty air filter.
Defective run/start capacitor, overload, or start
relay.
Faulty outdoor-fan (cooling) or indoor-fan (heating) motor or capacitor.
Restriction in refrigerant system.
Suction Pressure Greater
Defective TXV.
than 100 psig in Cooling
Mode.
Excessive Head Pressure.*
Dirty air filters.
Dirty coils.
Refrigerant overcharged.
Air in system.
Condensing air restricted or air short-cycling.
Head Pressure too Low.*
Low refrigerant charge.
Compressor valves leaking.
Restriction in liquid tube.
Excessive Suction Pressure.* High heat load.
Compressor valves leaking.
Refrigerant overcharged.
Suction Pressure too Low.*
Dirty air filters or coils.
Low refrigerant charge.
Metering device or low side restricted.
Insufficient indoor airflow.
REMEDY
Call power company.
Replace fuse or reset circuit breaker.
Replace component.
Determine cause and correct.
Check wiring diagram and rewire correctly.
Check light commercial Thermidistat program. See Step 5
— Conduct Light Commercial Thermidistat Start-Up and
Checkout on page 45.
Replace fan motor.
Check wiring and repair or replace.
Determine cause. Replace compressor.
Determine cause and replace.
Check for DEHUM signal on light commercial Thermidistat
LCD display.
Allow time for Time Guard device to recycle unit.
Recover refrigerant, evacuate system, and recharge to
nameplate.
Replace and determine cause.
Determine cause and correct.
Determine cause and correct.
Determine cause and replace.
Replace.
Locate restriction and remove.
Replace TXV.
Replace filters.
Clean coils.
Recover excess refrigerant.
Recover refrigerant, evacuate system, and recharge.
Determine cause and correct.
Check for leaks; repair and recharge.
Replace compressor.
Remove restriction.
Check for source and eliminate.
Replace compressor.
Recover excess refrigerant.
Replace filter, clean coils.
Check for leaks; repair and recharge.
Remove source of restriction.
Increase air quantity. Check filter and replace if necessary.
LEGEND
TXV — Thermostatic Expansion Valve
*62AQ Energy$Recycler™ section uses TXVs with a 100 psig maximum operating pressure (MOP) feature to limit suction pressure
in Cooling mode at high temperatures. Always consult charging chart for correct operating pressures.
Table 6 — Supply-Air Damper Troubleshooting
PROBLEM
Damper Does Not Open; Fan(s) Off.
Damper Will Not Close.
CAUSE
OCR not energized (thermostat in Unoccupied
mode).
OCR defective.
Damper jammed.
Damper motor defective.
Loose wiring.
Damper jammed.
Motor return spring broken.
REMEDY
Check light commercial Thermidistat program
settings (see Step 5 — Light Commercial Thermidistat Start-Up and Checkout section, page 45).
Replace OCR.
Free damper.
Replace damper motor.
Check wiring and correct.
Free damper.
Replace motor.
LEGEND
OCR — Occupied Relay
Copyright 2006 Carrier Corporation
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 534-80159
Printed in U.S.A.
Form 48/50HJ,62AQ-3SIS
Pg 88
4-06
Replaces: 48/50HJ,62AQ-2SIS
Book 1 1 4 4
Tab 1a 1b 6a 6b
ROOFTOP SECTION AND ENERGY$RECYCLER SECTION (62AQ) START-UP CHECKLIST
(Remove and Store in Job File)
I. PRELIMINARY INFORMATION
RTU
62AQ
COBRA™ ENERGY RECOVERY UNIT MODEL NO.:
SERIAL NO.:
/
DATE:
TECHNICIAN:
/
II. PRE-START-UP (insert checkmark in box as each item is completed)
… VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTALLATION INSTRUCTIONS
… CHECK ALL ELECTRICAL CONNECTIONS AND TERMINALS FOR TIGHTNESS
… CHECK THAT SUPPLY AND EXHAUST HOODS ARE INSTALLED AND AIR FILTER(S) ARE CLEAN AND IN
PLACE
… CHECK FAN WHEEL AND PROPELLER FOR LOCATION IN HOUSING/ORIFICE AND SETSCREW TIGHTNESS
… CHECK PULLEY ALIGNMENT AND BELT TENSION PER INSTALLATION INSTRUCTIONS (62AQ300 BELT
DRIVE EXHAUST FAN AND SUPPLY FAN)
III. START-UP
COMBINED ELECTRICAL (COBRA ENERGY RECOVERY UNIT)
SUPPLY VOLTAGE
COMPRESSOR AMPS
INDOOR FAN AMPS
L1-L2
L1
L1
L2-L3
L2
L2
L3-L1
L3
L3
TEMPERATURES
OUTDOOR-AIR TEMPERATURE
RETURN-AIR TEMPERATURE
ENTERING SUPPLY-AIR (RTU)
LEAVING AIR TEMPERATURE (RTU)
DB
DB
DB
DB
WB
WB
WB
WB
PRESSURES (IN COOLING MODE)
ROOFTOP SECTION
REFRIGERANT SUCTION
REFRIGERANT DISCHARGE
PSIG
PSIG
TEMP AT COMPRESSOR
TEMP AT COMPRESSOR
F
F
… VERIFY REFRIGERANT CHARGE USING CHARGING CHART LABEL ON UNIT.
62AQ
REFRIGERANT SUCTION
REFRIGERANT DISCHARGE
PSIG
PSIG
TEMP AT COMPRESSOR
TEMP AT COMPRESSOR
… VERIFY REFRIGERANT CHARGE USING CHARGING CHART LABEL ON UNIT.
CL-1
F
F
AIRFLOWS (62AQ)
SUPPLY AIR
CFM
MOTOR SPEED (Circle One)
LOW
MEDIUM
DAMPER SETTING (° ) (Circle One)
EXHAUST AIR
30
HIGH
45
60
90
CFM
MOTOR SPEED (Circle One)
DAMPER SETTING (° ) (Circle One)
LOW
30
MEDIUM
45
60
HIGH
90
IV. LIGHT COMMERCIAL THERMIDISTAT™ ACCESSORY
NOTE: To disable Keyboard Lock, press MODE, COPY PREVIOUS DAY, SET TIME/TEMP, and HOLD End buttons in
sequence within 5 seconds.
PROGRAMMED
KEYBOARD LOCK
Yes
Yes
No
No
OCCUPIED SETTINGS:
ROOM TEMP
ROOM RH
F
%
TIMES:
OC1
OC2
ON
OFF
TIMES:
UC1
UC2
ON
OFF
Copyright 2006 Carrier Corporation
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 534-80159
Printed in U.S.A.
Form 48/50HJ,62AQ-3SIS
Pg CL-2
4-06
Replaces: 48/50HJ,62AQ-2SIS
Book 1 1 4 4
Tab 1a 1b 6a 6b
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -- - - - - - - - - - - - - - - - - - - CUT ALONG DOTTED LINE
CUT ALONG DOTTED LINE
III. START-UP (cont)