CARRIER Package Units(both Units Combined) Manual L0502457
User Manual: CARRIER CARRIER Package Units(both units combined) Manual CARRIER Package Units(both units combined) Owner's Manual, CARRIER Package Units(both units combined) installation guides
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50HJ020-028
Single Package Rooftop Units
Electric Cooling with Electric Heat Option
Installation Start-Up and
Service Instructions
CONTENTS
Page
SAFETY CONSIDERATIONS ......................
1
INSTALLATION ................................
2-25
Step 1 -- Provide Unit Support ...................
2
• ROOF CURB
• ALTERNATE UNIT SUPPORT
• SLAB MOUNT
Step 2 -- Remove Shipping Rails ................
2
Step 3 -- Rig and Place Unit .....................
2
• POSITIONING
• ROOF MOUNT
• INSTALLATION ONTO CURB
Step 4 -- Field Fabricate Ductwork ...............
9
Step 5 -- Make Unit Duct Connections ...........
9
• VERTICAL CONFIGURATION
• HORIZONTAL APPLICATIONS
Step 6 --Trap
Condensate
Drain ................
10
Step 7- Make Electrical Connections ..........
10
• FIELD POWER SUPPLY
• FIELD CONTROL WIRING
Step 8 -- Install Outdoor-Air Hood ..............
23
• MANUAL DAMPER ASSEMBLY
Step 9 -- Position Optional Power Exhaust
or Barometric Relief Damper Hood ............
25
Step 10- Non-Fused Disconnect ...............
25
Step 11 -- Install All Accessories ...............
25
PRE-START-UP ..................................
26
START-UP ....................................
26-43
Unit Preparation .................................
26
Compressor
Mounting ..........................
26
Refrigerant Service Ports .......................
26
Crankcase Heaters ..............................
26
Compressor
Phasing ............................
26
Internal Wiring ..................................
26
Evaporator Fan ..................................
26
Condenser
Fans and Motors ....................
26
Return-Air Filters ................................
26
Outdoor-Air Inlet Screens .......................
26
Optional EconoMiSer IV .........................
37
Operating Sequence
............................
42
SERVICE .....................................
43-49
Cleaning ........................................
43
Lubrication ......................................
43
Evaporator Fan Service and Replacement .......
43
Manufacturer
Page
Evaporator Fan Performance Adjustment .......
44
Belt Tension Adjustment ........................
44
Condenser
Fan Adjustment .....................
45
Power Failure ...................................
45
Refrigerant Charge ..............................
45
Filter Drier ......................................
45
Protective Devices ..............................
45
Relief Devices ...................................
46
Control Circuit, 24-v .............................
46
Replacement
Parts ..............................
46
TROUBLESHOOTING ........................
50-53
Unit Troubleshooting
............................
50
EconoMiSer IV Troubleshooting
.................
51
START-UP CHECKLIST ........................
CL-I
SAFETY
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 the basic maintenance
functions of replacing filtel:s. All other operations
should
be perforated 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 may apply.
Follow all safety codes. Wear safety glasses and work
gloves. Use quenching cloth for unbrazing operations. Have
fire extinguishers available for all brazing operations.
Before performing service or maintenance
operations on
unit, turn off main power switch to unit. Electrical shock
could cause personal injury.
I
operating limits. If limits are exceeded, the units will
automatically lock the complessor out of operation.
IMPORTANT:
have high
mnbient
temperature
Manu;d reset willUnits
be required
to restart
the compressor
reserves the right to discontinue, or change at any time, specifications
Catalog No. 04-53500013-01
Printed in U.S,A,
CONSIDERATIONS
or designs without notice and without incurring obligations.
Form 50HJ-30SI
Pg 1
10-05
Replaces:
50HJ-26SI
I
I
INSTALLATION
Step 1 --
Provide
Step 3 -- Rig and Place Unit -- Inspect unit for transpollation &image. See Tables 1-3 for physical
claim with transportation agency.
Unit Support
ROOF CURB -- Assemble or install accessory roof curb in
accor&mce with instructions shipped with this accessory. See
Fig. 1. Install insulation, cant strips, roofing, and counter flashing as shown. Ductwork can be installed to roof curb before
unit is set in place. Ductwork must be attached to curb and not
to unit. Curb must be level. This is necessary to permit unit
diain to function properly. Unit leveling tolerance is _+J/m(_in.
per linear fl in any direction. Refer to Accessory Roof Curb
Installation Instructions for additional information as required.
When accessory roof curb is used, unit may be installed on
class A, B, or C roof covering matetial. Carrier roof curb accessoties are for flat roofs or slab mounting.
IMPORTANT: The gasketing of the unit to the roof curb
is ctitic_d for a watertight seal. Install gasket with the
roof curb as shown in Fig. 1. Improperly applied gasket
can _dso result in air leaks and poor unit performance.
Do not slide unit to position on roof curb.
ALTERNATE UNIT SUPPORTWhen a curb cannot be
used, install unit on a noncombustible
surface. Support unit
with sleepel_, using unit curb support area. If sleepers cannot
be used, support long sides of unit with a minimum of 3 equ_dly spaced 4-in. x 4-in. pads on each side.
SLAB MOUNT (Horizontal
Units Only) -- Provide a level
concrete slab that extends a minimum of 6 in. beyond unit cabinet. Install a gravel apron in front of condenser coil air inlet to
plevent gross and foliage from obstructing airflow.
NOTE: Horizontal
required.
units may be installed
on a roof curb if
Step 2 -- Remove
Shipping Rails -- Remove shipping rails ptior to loweting unit onto roof curb. See Fig. 2. The
rails are attached to the unit at both the return end and condenser end. Remove the screws from both ends of each rail. Be
cmeful not to drop the rails onto any surface that could be &imaged. Discard the mils. It is important to replace the screws into
the unit to avoid any tfir or water leakage.
Do not allow the shipping rail to drop on the roof surface.
Dmnage to the roof surface may result.
data. File any
All panels must be in place when rigging. Unit is not
designed for handling by fork truck. Damage to unit can
result.
Do not &op unit; keep uptight. Use spreader bm_ over unit
to prevent sling or cable damage. Rollers may be used to move
unit across a roof. Level by using unit frmne as a leference;
leveling tolerance is _+1/1(_in. per linetu ft in any direction. See
Fig. 3 for additional information. Unit rigging weight is shown
in Fig. 3.
Four lifting holes me provided in the unit base mils as
shown in Fig. 3. Refer to rigging instructions on unit.
POSITIONING
-- Maintain clearance, per Fig. 4, around and
above unit to provide minimum distance from combustible
matetials, proper airflow, and service access.
Do not install unit in an indoor location. Do not locate air
inlets nero exhaust vents or other sources of contaminated all:
Although unit is weatherproof,
higher level runoff and overhangs.
guard against
water from
ROOF MOUNT -- Check building codes for weight distribution requirements. Unit operating weight is shown in Table 1.
INSTALLATION
ONTO CURB -- The 50HJ units are
designed to fit on the accessory full perimeter curb. Correct
placement of the unit onto the curb is ctitical to operating performance. To aid in correct positioning, 3/_-in. diameter locating holes have been added to the unit base rails. When placing
the unit, these holes should line up with the roof curb edge as
shown in Fig. 5 and 6, to assure proper duct opening alignment. For placement on the curb, use the alignment holes
located approximately 2-in. from the end of the base rail on the
return end of the unit. See labels on the side of the unit for
more details.
Do not slide unit to position it when it is sitting on the curb.
Curb gasketing matetial may be &imaged and leaks may
result.
_z
c_
_J
._
oo
r_
o
I
\
I
I
o_ _
SHIPPING RAIL_
Fig. 2 -- Shipping
Rail Removal
CAUTIONNOTICETO
AM. PAriS MUSTBE
IN PLACE_ RIGGERS:
RIGGING.
NOTICETO RIGGB_S: Rig by bserti_ hooks
120 inches (3048
protect
con of
50HJ
UNIT
SIZE
020
MAX
WEIGHT
(Ib)
3358
024
028
_
urit
from top
from
of
unit to
ilto unit base
eyehoolL
Leave
rails as shown. Ma_ltain a distance of
con cover attached
to ur(t _
dgg_g
damage.
CENTER OF GRAVITY (in.)
X
63.9
Y
34.0
Z
30.5
3380
63.9
34.5
30.5
3769
67.8
35.0
35.0
NOTES:
1. Add 150 Ib (68 kg) for domestic crating.
2. See label for unit location on roof curb.
Fig. 3 -- Rigging Details
10'-0 o
(3048 MM)
to
r
_i
8
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J
_ _1
o
@ @
/
m
ii
€,,,
,£
€,,,
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...........
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€,,,
II1
I
Table 1 -- Physical Data
UNIT 50HJ
NOMINAL CAPACITY (tons)
OPERATING WEIGHT (Ib)
AI/AI*
COMPRESSOR
Quantity
Number of Refrigerant Circuits
Oil (ounces) Ckt A...Ckt B...Ckt C
REFRIGERANT TYPE
Expansion Device
Operating Charge (Ib)
Circuit A
Circuit B
Circuit C
CONDENSER FAN
Nominal Cfm (Total,
Quantity...Diameter
Motor Hp...Rpm
Watts Input (Total)
CONDENSER COIL
Rows... Fins/in.
Total Face Area (sq
EVAPORATOR FAN
Quantity...Size
Type Drive
Nominal Cfm
Motor Bearing Type
Maximum Allowable
EVAPORATOR COIL
Rows... Fins/in.
Total Face Area (sq
all fans)
(in.)
ft)
Fan Rpm
ft)
HIGH-PRESSURE
SWITCH (psig)
Cutout
Reset (Auto)
OUTDOOR-AIR INLET SCREENS
Quantity...Size (in.)
RETURN-AIR FILTERS
Quantity...Size (in.)
LEGEND
N/A
TXV
---
Not Applicable
Thermostatic Expansion Valve
*Aluminum
evaporator coil and aluminum condenser
coil.
020
18
024
20
028
25
2139
2187
2446
3
3
68._68._90
3
3
90...90...90
2
2
110...110...N/A
TXV
TXV
TXV
13.1
12.7
15.2
13.8
13.9
15.5
21.8
20.3
N/A
14,000
4...22
1/4_.1100
1400
14,000
4...22
1/4...1100
1400
21,000
6...22
1/4_.1100
2100
2...17
57.78
2...17
57.78
2...17
66.67
2._15xl 1
Belt
7000
Ball
1400
2_.15xl 1
Belt
8000
Ball
1400
2...15xl 1
Belt
10,000
Ball
1400
3...15
23.33
4...15
23.33
4...15
27.22
426
320
426
320
426
320
3._20x25
3...20x25
3._20x25
9... 16x25
9... 16x25
9... 18x24
Table 2 -- Fan Motor and Drive Data -- Vertical Supply/Return
O2O
50HJ
LOW RANGE
Motor Hp
Drive Motor Nominal Rpm
Drive Maximum Continuous Bhp
Drive Maximum Continuous Watts
Motor Frame Size
Motor Shaft Diameter (in.)
Fan Rpm Range
Motor Pulley Min. Pitch Diameter (in.)
Motor Pulley Max. Pitch Diameter (in.)
Blower Pulley Pitch Diameter (in.)
Blower Pulley Shaft Diameter (in.)
Blower Pulley Type
Pulley Center Line Distance (in.)
Belt, Quantity...Type...Length
(in.)
Speed Change per Turn - Moveable Pulley
Moveable Pulley Maximum Full Turns
Factory Speed Setting (rpm)
MID-LOW RANGE
Motor Hp
Motor Nominal Rpm
Maximum Continuous Bhp
Maximum Continuous Watts
Motor Frame Size
Motor Shaft Diameter (in.)
Fan Rpm Range
Motor Pulley Min. Pitch Diameter (in.)
Motor Pulley Max. Pitch Diameter (in.)
Blower Pulley Pitch Diameter (in.)
Blower Pulley Shaft Diameter (in.)
Blower Pulley Type
Pulley Center Line Distance (in.)
Belt, Quantity...Type...Length
(in.)
Speed Change per Turn - Moveable Pulley
Moveable Pulley Maximum Full Turns
Factory Speed Setting (rpm)
MID-HIGH RANGE
Motor Hp
Motor Nominal Rpm
Maximum Continuous Bhp
Maximum Continuous Watts
Motor Frame Size
Motor Shaft Diameter (in.)
Fan Rpm Range
Motor Pulley Min. Pitch Diameter (in.)
Motor Pulley Max. Pitch Diameter (in.)
Blower Pulley Pitch Diameter (in.)
Blower Pulley Shaft Diameter (in.)
Blower Pulley Type
Pulley Center Line Distance (in.)
Belt, Quantity...Type...Length
(in.)
Speed Change per Turn - Moveable Pulley
Moveable Pulley Maximum Full Turns
Factory Speed Setting (rpm)
HIGH RANGE
Motor Hp
Motor Nominal Rpm
Maximum Continuous Bhp
Maximum Continuous Watts
Motor Frame Size
Motor Shaft Diameter (in.)
Fan Rpm Range
Motor Pulley Min. Pitch Diameter (in.)
Motor Pulley Max. Pitch Diameter (in.)
Blower Pulley Pitch Diameter (in.)
Blower Pulley Shaft Diameter (in.)
Blower Pulley Type
Pulley Center Line Distance (in.)
Belt, Quantity...Type...Length
(in.)
Speed Change per Turn - Moveable Pulley
Moveable Pulley Maximum Full Turns
Factory Speed Setting (rpm)
LEGEND
Bhp
N/A
---
Brake Horsepower
Not Applicable
(rpm)
(rpm)
(rpm)
(rpm)
O24
208/230
and 460 v
575 v
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
208/230
and 460 v
3.7
1725
4.25
3698
56HZ
7/8
685-939
2.7
3.7
6.8
1.1875
Fixed
5
1745
5.75
4900
184T
11/8
949-1206
3.7
4.7
6.8
1.1875
Fixed
5
1745
5.75
4900
S 184T
11/8
949-1206
3.7
4.7
6.8
1.1875
Fixed
9,81-13.055
1...BX...38
43
6
1078
5
1745
5.75
4900
S184T
11&
897-1139
3.7
4.7
7.2
1.1875
Fixed
9,81-13.055
1...BX...38
40
6
1018
5
1745
5.75
4900
184T
11/8
873-1108
3.7
4.7
7.4
1.1875
Fixed
9.81-13.055
1...BX...36
39
6
991
7.5
1745
8.63
7267
$213T
941-1176
4.8
6.0
8.9
1.1875
Fixed
9.025-12.179
1...BX...42
39
6
1059
7.5
1745
8.63
7267
$213T
10
1745
11.5
9582
$215T
13/8
5
1745
5.75
4900
184T
11/8
751-954
3.7
4.7
8.6
1.1875
Fixed
9.81-13.055
1 ...BX...40
34
6
853
3
1725
3.45
3149
56HZ
7/8
810-1072
3.1
4.1
6.6
1.1875
Fixed
11,286-14,475
1...BX...38
44
6
941
1078-1274
5.5
6.5
8.9
1.1875
Fixed
9.025-12.179
1...BX...42
33
6
1176
575 v
11.293-13.544
1...BX...38
42
6
812
3.7
1725
4.25
3698
56HZ
7/8
647-886
2.7
3.7
7.2
1.1875
Fixed
11.293-13.544
1 ...BX...38
40
6
767
7.5
1745
8.63
7267
$213T
13/8
1078-1274
5.5
6.5
8.9
1.1875
Fixed
9.025-12.179
1...BX...42
33
6
1176
O28
13/8
13/8
1014-1297
4.3
5.5
7.4
1.1875
Fixed
9.025-12.179
2...BX...38
47
6
1156
208/230
and 460 v
5
1745
5.75
4900
S 184T
1%
687-873
3.7
4.7
9.4
1.1875
Fixed
9.81-13.055
1...BX...41
31
6
780
5
1745
5.75
4900
S184T
11_
805-1007
4.8
6.0
10.4
1.1875
Fixed
575 v
5
1745
5.75
4900
184T
11/8
687-873
3.7
4.7
9.4
1.1875
Fixed
9,81-13,055
1...BX...41
31
6
780
5
1745
5.75
4900
184T
11/8
805-1007
4.8
6.0
10.4
1.1875
Fixed
9,81-13,055
1...BX...45
34
6
906
9.81-13.055
1...BX...38
43
6
1078
9.81-13.055
1...BX...45
34
6
906
7.5
1745
8.63
7267
S213T
13/8
941-1176
4.8
6.0
8.9
1.1875
Fixed
9.025-12.179
1...BX...42
39
6
1059
7.5
1745
8.63
7267
S213T
13/8
941-1176
4.8
6.0
8.9
1.1875
Fixed
9.025-12.179
1...BX...42
39
6
1059
7.5
1745
8.63
7267
S213T
1_8
941-1176
4.8
6.0
8.9
1.1875
Fixed
9.025-12,179
1...BX...42
39
6
1059
10
1745
11.5
9582
S215T
13/8
1014-1297
4.3
5.5
7.4
1.1875
Fixed
9.025-12.179
2...BX...38
47
6
1156
10
1745
11.5
9582
$215T
13/8
1014-1297
4.3
5.5
7.4
1.1875
Fixed
9.025-12,179
2...BX...38
47
6
1156
lO
1745
11.5
9582
$215T
13/8
1014-1297
4.3
5.5
7.4
1.1875
Fixed
9.025-12,179
2...BX...38
47
6
1156
Table 3 -- Fan Motor and Drive Data -- Horizontal Supply/Return
020
50HJ
208/230
and 460 v
LOW RANGE
N/A
Motor Hp
N/A
Motor Nominal Rpm
N/A
Maximum Continuous Bhp
Maximum Continuous Watts
N/A
Motor Frame Size
N/A
N/A
Motor Shaft Diameter (in.)
N/A
Fan Rpm Range
N/A
Motor Pulley Min. Pitch Diameter (in.)
N/A
Motor Pulley Max. Pitch Diameter (in.)
N/A
Blower Pulley Pitch Diameter (in.)
N/A
Blower Pulley Shaft Diameter (in.)
N/A
Blower Pulley Type
N/A
Drive Pulley Center Line Distance (in.)
N/A
Drive Belt, Quantity...Type...Length
(in.)
N/A
Drive Speed Change per Turn - Moveable Pulley (rpm)
N/A
Drive Moveable Pulley Maximum Full Turns
N/A
Drive Factory Speed Setting (rpm)
MID-LOW RANGE
3.7
Motor Hp
1725
Motor Nominal Rpm
4.25
Maximum Continuous Bhp
Maximum Continuous Watts
3698
Motor Frame Size
56HZ
7/8
Motor Shaft Diameter (in.)
647-886
Fan Rpm Range
2.7
Motor Pulley Min. Pitch Diameter (in.)
3.7
Motor Pulley Max. Pitch Diameter (in.)
7.2
Blower Pulley Pitch Diameter (in.)
1,1875
Blower Pulley Shaft Diameter (in.)
Fixed
Blower Pulley Type
11.293-13.544
Pulley Center Line Distance (in.)
1...BX,,.38
Belt, Quantity...Type...Length
(in.)
40
Speed Change per Turn - Moveable Pulley (rpm)
6
Moveable Pulley Maximum Full Turns
767
Factory Speed setting (rpm)
MID-HIGH RANGE
5
Motor Hp
1745
Motor Nominal Rpm
5.75
Maximum Continuous Bhp
Maximum Continuous Watts
4900
Motor Frame Size
$184T
1%
Motor Shaft Diameter (in.)
Fan Rpm Range
897-1 139
3.7
Motor Pulley Min. Pitch Diameter (in.)
4.7
Motor Pulley Max. Pitch Diameter (in.)
7.2
Blower Pulley Pitch Diameter (in.)
1.1875
Blower Pulley Shaft Diameter (in.)
Fixed
Blower Pulley Type
9.81-13.055
Drive Pulley Center Line Distance (in.)
1 ...BX...38
Belt, Quantity...Type...Length
(in.)
4O
Speed Change per Turn - Moveable Pulley (rpm)
6
Moveable Pulley Maximum Full Turns
1018
Factory Speed Setting (rpm)
HIGH RANGE
7.5
Motor Hp
1745
Motor Nominal Rpm
8.63
Maximum Continuous Bhp
Maximum Continuous Watts
7267
Motor Frame Size
S213T
13/8
Motor Shaft Diameter (in.)
1078-1274
Fan Rpm Range
5.5
Motor Pulley Min. Pitch Diameter (in.)
6.5
Motor Pulley Max. Pitch Diameter (in.)
8.9
Blower Pulley Pitch Diameter (in.)
1.1875
Blower Pulley Shaft Diameter (in.)
Fixed
Blower Pulley Type
9.025-12,179
Pulley Center Line Distance (in.)
1...BX...42
Belt, Quantity...Type...Length
(in.)
33
Speed Change per Turn - Moveable Pulley (rpm)
6
Moveable Pulley Maximum Full Turns
1176
Factory Speed Setting (rpm)
LEGEND
Bhp
N/A
---
Brake Horsepower
Not Applicable
024
028
575 v
208/230
and 460 v
575 v
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
3.7
1725
4.25
3698
56HZ
7/8
685-939
2.7
3.7
6.8
1.1875
Fixed
1.293-13.544
1...BX...38
42
6
812
5
1745
5.75
4900
184T
11/8
751-954
3.7
4.7
8.6
1.1875
Fixed
9,81-13,055
1...BX...4O
34
6
853
5
1745
5.75
4900
S 184T
11/8
687-873
3.7
4.7
9.4
1.1875
Fixed
9,81-13,055
1...BX...41
31
6
780
5
1745
5.75
4900
184T
11/8
687-873
3.7
4.7
9.4
1.1875
Fixed
9.81-13,055
1 ...BX,..41
31
6
780
5
1745
5.75
4900
S184T
11/8
949-1206
3.7
4.7
6.8
1.1875
Fixed
9.81-13.055
1 ...BX,,.38
43
6
1078
5
1745
5.75
4900
184T
11/8
949-1206
3.7
4.7
6.8
1.1875
Fixed
9,81-13,055
1 ._BX_.38
43
6
1078
5
1745
5.75
4900
S 184T
11/8
805-1007
4.8
6.0
10.4
1.1875
Fixed
9,81-13,055
1...BX...45
34
6
906
5
1745
5.75
4900
184T
11/8
805-1007
4.8
6.0
10.4
1.1875
Fixed
9.81-13,055
1...BX...45
34
6
906
3
1725
3.45
3149
56HZ
7/8
810-1072
3.1
4.1
6,6
1.1875
Fixed
11,286-14.475
1...BX...38
44
6
941
5
1745
5.75
4900
184T
11/8
873-1108
3.7
4.7
7.4
1.1875
Fixed
9.81-13.055
1...BX...38
39
6
991
7.5
1745
8.63
7267
S213T
13/8
1078-1274
5.5
6.5
8.9
1.1875
Fixed
9.025-12.179
1 ...BX...42
33
6
1176
7.5
1745
8.63
7267
$213T
13/8
941 - 1176
4.8
6.0
8.9
1.1875
Fixed
9.025-12.179
1...BX...42
39
6
1059
lO
1745
11.5
9582
$215T
13/8
1014-1297
4.3
5.5
7.4
1.1875
Fixed
9.025-12,179
2...BX...38
47
6
1156
7.5
1745
8.63
7267
S213T
13/8
941-1176
4.8
6.0
8.9
1.1875
Fixed
9.025-12,179
1 ...BX...42
39
6
1059
10
1745
11.5
9582
$215T
1_8
1014-1297
4.3
5.5
7.4
1.1875
Fixed
9.025-12.179
2...BX...38
47
6
1156
208/230
and 460 v
575 v
7.5
1745
8.63
7267
$213T
7.5
1745
8.63
7267
S213T
1_8
941-1176
4.8
6.0
8.9
1.1875
Fixed
9.025-12.17£
1...BX...42
39
6
1059
941-1176
4.8
6.0
8.9
1.1875
Fixed
9.025-12,179
1...BX...42
39
6
1059
lO
1745
11.5
9582
S215T
13/8
1014-1297
4.3
5.5
7.4
1.1875
Fixed
9.025-12.17£
2...BX...38
47
6
1158
10
1745
11.5
9582
S215T
13/8
1014-1297
4.3
5.5
7.4
1.1875
Fixed
9.025-12,179
2...BX...38
47
6
1156
13/8
ALIGNMENT
HOLE
(IN BASE
RAIL)\
HOLE SHOULD
LINE UP WITH
ROOF CURB
EDGE FLANGE
ALIGNMENT
q
EDGE
FLANGE
For vertical supply and return units, tools or pmls could
diop into ductwork and cause an injury. Install a 90-degree
turn in the return ductwork between the unit and the conditioned space. If a 90-degree elbow cannot be installed, then
a grille of sufficient strength and density should be installed
to prevent objects from ftdling into the conditioned space.
f
Units with electric heat require a 1-in. clearance for the first
24 in. of ductwork. Outlet grilles must not lie directly below
unit discharge.
Fig. 5 -- Alignment Hole Details
NOTE: A 90-deglee elbow must be provided
ductwork to comply with UL (Underwriters'
codes for use with electric heat.
RETURN
OPENING
ALIGNMENT
SIDES
CURB
SUPPL
OPENING
HOLES FOR
CURB-BOTH
_"--...._
HORIZONTAL
APPLICATIONS
-- Horizontal
units are
shipped with outer panels that tdlow for side by side horizontal
duct connections. If specified during ordering, the unit will be
shipped with the vertical duct openings blocked off from the
factoq, ready for side supply installation. If the horizontal
option was not specified fit time of ordering the unit, a fieldinstalled accessory kit is required to convert the vertical unit
into a horizontal supply configuration.
SUPPLY
OPENING
CURB
RETURN
OPENINg.-
Installation of the duct block-off covers should be completed prior to placing the unit unless sufficient side clem'ance is
available. A minimum of 66 in. is required between the unit
and any obstruction
to install the duct block-off covers.
_
ROOF CURB
Fig. 6 -- Alignment
Hole
in the supply
Laboratories)
Location
ECONOMIZER
Step 4 --
Field Fabricate
Ductwork
-- On vertical
units, secure all ducts to roof curb and building structure. Do
not connect ducm'ork to unit. For horizontal applications, fieldsupplied flanges should be attached to horizontal dischalge
openings and all ductwork secured to the flanges. Insulate and
weatherproof all external ductwork, joints, and roof openings
with counter flashing and mastic in accordance with applicable
codes.
Ducts passing through an unconditioned
insulated and covered with a vapor baniel:
space
must
SEE
NOTE
be
If a plenum return is used on a vertictd unit, the return
should be ducted through the roof deck to comply with applicable fire codes.
A minimum clearance is not required around ductwork.
Cabinet leturn-air static plessure (a negative condition) shall
not exceed 0.35 in. wg with economizer or 0.45 in. wg without
economizer
,N.......
@ OUT
A,R
AIR
NOTE: Do not drill in this area; damage
to basepan may result in water leak.
Fig. 7 -- Air Distribution
-Vertical Supply and Return
These units are designed for a minimum continuous returnair temperature in heating of 50 F (dry bulb), or an intermittent
operation down to 45 F (di'y bulb), such as when used with a
night set-back thermostat.
ECONOMIZER
To operate fit 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 K Indoor comfort may be compromised
when these lower air temperatures
are used with insufficient heating temperature rise.
Step 5 --
Make Unit Duct Connections
VERTICAL CONFIGURATION
-- Unit is shipped for thruthe-bottom duct connections. DuctwoN openings are shown in
Fig. 1 and 4. Duct connections for vertical supply and return
configuration are shown in Fig. 7. Field-fabricated
concentric
ductwork may be connected as shown in Fig. 8 and 9. The unit
is designed to attach the ductwork to the roof curb. Do not
attach duct directly to the unit.
;EE
NOTE
SEE
AIR OUT
AIR IN
AIR OUT
NOTE: Do not drill in this area; damage to basepan may result in water leak.
Fig. 8 -- Air Distribution
-- Concentric
Duct
Field wiring must conform to temperature
type "T" wire. All field wiring must comply
local requirements.
limitations for
with NEC and
Operating voltage to compressor
must be within voltage
range indicated on unit nameplate. On 3-phase units, voltages
between phases must be balanced within 2%.
Unit failure as a result of operation on improper line voltage
or excessive phase imbalance constitutes abuse and may cause
damage to electrical components.
FIELD CONTROL
WIRING -- Unit c_m be controlled with
a C_uTier-approved accessory thermostat.
Install therlnostat
according to the installation instructions included with accessory. Locate thennostat assembly on a solid interior w_dl in the
conditioned space to sense average temperature.
Route thermostat cable or equivalent single leads of colored
wire from subbase terminals through conduit into unit to lowvoltage connections as shown on unit label wiring diagraln and
in Fig. 13.
BAFFLE
NOTE: Dimensions
diffuser.
A, A', B, and B' are obtained from field-supplied
ceiling
Shaded areas indicate block-off pans.
Fig. 9 -- Concentric
Duct Details
NOTE: For wire runs up to 50 fl, use no. 18 AWG (American
Wire Gage) insulated wire (35 C minimum). For 50 to 75 ft,
use no. 16 AWG insulated wire (35 C minimum). For over
75 fl, use no. 14 AWG insulated wire (35 C Minimum). All
wire larger than no. 18 AWG cannot be directly connected at
the thermostat and will require a junction box and splice at the
thermostat.
Side supply duct dimensions and locations are shown on Fig. 4.
Connect ductwork to horizontal duct flange connections on
side of unit.
Step 6 --
Trap Condensate
Drain -- See Fig. 10
for drain location. One 3/4-in. half coupling is provided outside
unit evaporator section for condensate diain connection. A trap
at least 4-in. deep must be used. See Fig. 11.
Text continued
All units must have an external trap for condensate diainage. Install a trap at least 4 in. deep and protect against freezeup. If drain line is installed downstrealn from the external trap,
pitch the line away from the unit at 1 in. per 10 ft of run. Do not
use a pipe size smaller than the unit connection.
Step 7 --
Make Electrical
on puge 23.
-DAMPER
ACCESS
i 1
MOTOR
COVER
m_--.--
Connections
F[ELD POWER SUPPLY -- Unit is factory wired for voltage shown on unit nalneplate. Be sure to check for correct
voltage.
CONDENSATE
ACCESS
When inst_flling units, provide disconnect per NEC (National Electrical Code) of adequate size (MOCP [Maximum
Overcurrent protectionl of unit is on the informative plate). See
Tables 4A and 4B. All field wiring must comply with NEC and
local codes. Size wire based on MCA (Minimum Circuit
Amps) on the unit informative plate. See Fig. 12 for power
wiring connections
to the unit power termimd block and
equipment grounds.
J
DRAIN
(P
.... DI
CONNECTION
[1208]
/
5-1/4
[132 I
SUPPLY
AIR
Fig. 10-
Route power and ground lines through control box end panel or unit basepan (see Fig. 4) to connections as shown on unit
wiring diagram and Fig. 12.
The correct power phasing is critical to the operation of the
scroll compressors.
An incorrect phasing will result in
compressor
shutdown on thermal overload and possible
dmnage to compressor. Should this occur, power phase correction must be made to the incoming powec
ONE_N.
PER
1OFT
Unit cabinet must have an uninterrupted, unbroken electrical ground to minimize the possibility of personal injury if
an electrical fault should occuc This ground may consist of
electrical wire connected to unit ground lug in control comp_utment, or conduit approved for electrical ground when
inst_dled in accordance with NEC, ANSI/NFPA (National
File Protection Association), latest edition, and local electrical codes. Failure to follow this warning could result in
the installer being liable for personal injury of others.
OFUNE
RETURN
AIR
Condensate Drain Details
BASE
\
\
RAIL
I
--I
I I INq"
_-[__J/t
z' MiNI [
Z/I
SEE
NOTE
T OOi
_ROOF
I
CURB
NOTE: Trap should be deep enough to offset maximum unit static
difference. A 4-in. trap is recommended,
Fig. 11 -- Condensate
10
Drain
Piping
Details
Table 4A -- Electrical Data -- Units Without Convenience Outlet
UNIT
SIZE
50HJ
NOMINAL
VOLTAGE
(3 Ph, 80 Hz)
VOLTAGE
RANGE
MIn
Max
COMPRESSOR
No. 2
No. 1
RLA
LRA
RLA
LRA
OFM
ELECTRIC
HEAT
No. 3
RLA
LRA
Gty
Hp
FLA
kW
--
208/230
187
253
16.7
130
16.7
130
22.4
184
4
0.25
FLA
Hp
--
19/25
52/
POWER
EXHAUST
IFM
60
FLA
3.7
10.6/9.6
5
16.7/15.2
7.5
24.2/22
3.7
10.6/9.6
5
16.7/15.2
7.5
24.2/22
3.7
10.6/9.6
5
16.7/15.2
7.5
24.2/22
3.7
10.6/9.6
5
16.7/15.2
7.5
24.2/22
1.5
38/50
56/75t
104/120
156/180
020
--
--
25
460
414
506
9
70
9
70
10.7
90
4
0.25
30
3.7
4.8
5
7.6
7.5
11
3.7
4.8
5
7.6
7.5
11
3.7
4.8
5
7.6
7.5
11
0.7
50
60
Gty
2
75
LEGEND
FLA
NACR
---
IFM
LRA
---
Full Load Amps
Heating, AirConditioningand
Refrigeration
Indoor (Evaporator)
Fan Motor
Locked Rotor Amps
MCA
MOCP
NEC
OFM
RLA
------
Minimum Circuit Amps
Maximum Overcurrent Protection
National Electrical Code
Outdoor (Condenser) Fan Motor
Rated Load Amps
90
11
deviation is 7 v.
5.9
MCA
MOCP*
78/ 77
100/
90/ 89
100/100
84/ 83
100/100
90/ 89
104/102
90
FLA
83/ 82
97/ 96
1
5.9
96/ 94
100/100
92/ 89
100/100
99/ 96
2
1
5.9
104/101
125/110
112/110
78/ 87
100/
2
1
5.9
93/102
100/110
97/ 96
100/100
110/110
90/ 89
104/102
90
83/ 82
2
1
5.9
86/ 94
101/109
95/103
100/110
99/ 96
2
1
5.9
110/117
125/125
112/110
143/132
150/150
132/149
2
1
5.9
158/147
175/150
145/163
151/139
175/150
139/155
166/154
175/175
152/169
160/148
175/150
147/163
2
1
5.9
2
1
5.9
175/162
78/ 77
200/175
100/ 90
161/177
83/ 82
2
1
5.9
90/ 89
100/100
97/ 96
84/ 83
100/100
90/ 89
104/102
2
1
5.9
96/ 94
100/100
92/ 89
100/100
99/ 96
2
1
5.9
104/101
125/110
112/110
39
45
42
2
1
3.1
45
50
49
42
48
50
50
45
52
45
50
49
51
60
56
44
45
42
51
60
49
47
50
45
55
60
52
51
60
49
2
1
3.1
2
1
3.1
2
2
1
1
3.1
3.1
2
1
3.1
59
66
60
80
56
75
2
1
3.1
74
80
82
70
80
78
77
80
85
74
80
82
82
90
89
96
100
109
3.1
104
110
116
100
107
110
125
112
119
104
125
116
112
125
123
2
2
1
1
1
3.1
3.1
2
1
3.1
2
1
3.1
from average w>ltage.
percent o1 voltage imbalance.
7
100x
Imbalance=
= 1.53%
of phase
imbalance is satisfactory
IMPORTANT:
local
electric utility
If thecompany
supply voltage
immediately,
phase
as it is below the maximum
imbalance
allowable
is more than 2%, contact
your
3. The 75-kW 208/240-v electric heat can be factory installed but it must be wired separately in the field.
4. The convenience outlet full load amps (FLA) are 5, 3 and 3 for 208/230, 460, 575-v
units, respectively.
5. The FLA load amps provided in the table for electric heaters are based on 208/240,480
and 600 v.
6. MCA calculation for 50HJ units with electric heaters over 50 kW is = 1.25 x (IFM +
Power Exhaust + Convenience Outlet FLA amps) + 1.00 x (Electric Heater FLA).
max voltage deviatk)n from average voltage
average voltage
AC = 455 v
Average Voltage
BC = 464 v
7.5
Maximum
This amount
2%.
Example: Supply voltage is 460-3-60.
A B C
AB = 452 v
(_
7.6
maximum deviation
- 452 = 5 v
- 457 = 7 v
- 455 = 2 v
% Voltage
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. Canadian 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.
% Voltage Imbalance
= 100 x
5
Determine
(AB) 457
(BC) 464
(AC) 457
Determine
*Fuse or HACR circuit breaker.
1-208/230 v 75-kW Electric Heat units must use dual-point wiring. The main table lists the
branch circuit values for the refrigeration part of the system. The following two tables list
the branch circuit values for the electric heat and values for a feeder circuit for both branch
circuits.
4.8
1
_La_
DISCONNECT
SIZE
2
2
3.7
Hp
POWER
SUPPLY
= 452 + 464 + 455
3
1371
=---;= 457
11
Table 4A -- Electrical Data -- Units Without Convenience
UNIT
SIZE
5OHJ
VOLTAGE
RANGE
NOMINAL
VOLTAGE
(3Ph,
80Hz)
Mln
COMPRESSOR
NO. 2
NO. 1
Max
RLA
LRA
RLA
OFM
ELECTRIC
HEAT
NO. 3
LRA
RLA
LRA
Qty
Hp
FLA
_,'ea'
kW
Outlet (cont)
IFM
FLA
POWER
EXHAUST
Hp
FLA
3
3.9
5
6.1
7.5
9
24.8
020
575
518
633
7
55
7
55
9.3
73
4
0.25
3.9
5
6.1
7.5
9
3
3.9
5
6.1
7.5
9
3
3.9
5
6.1
7.5
9
24
Hp
_L,I
MCA
32
MOCP*
40
FLA
35
2
1
2.4
37
45
40
35
40
37
39
45
43
37
45
40
42
50
46
35
40
35
2.4
41
45
40
38
44
40
45
37
43
41
45
40
47
50
46
62
70
57
68
70
63
65
70
60
71
80
65
69
70
63
2
1
48.3
46
75
2
1
2.4
2
1
2.4
2
1
2
UNIT
SIZE
50HJ
NOMINAL
VOLTAGE
020
208/240
VOLTAGE
RANGE
MIn
COMPRESSOR
NO. 2
NO. 1
Max
LRA
OFM
ELECTRIC
HEAT
NO. 3
LRA
LRA
Qty
(ea)
........
UNIT
SIZE
NOMINAL
VOLTAGE
50HJ
(3 Ph, 80 HZ)
MIn
COMPRESSOR
NO. 2
NO. 1
Max
RLA
LRA
RLA
LRA
NO. 3
2
1
2.4
75
80
80
90
69
91
2
1
2.4
86
90
96
83
90
93
89
190
99
86
100
97
92
190
102
1
RLA
LRA
Gty
Hp
FLA
(ea)
208/230
187
253
16.7
130
16.7
130
22.4
184
4
0.25
1.5
LEGEND
FLA
HACR
---
IFM
LRA
---
Full Load Amps
Heating, Air Conditioning and
Refrigeration
Indoor (Evaporator) Fan Motor
Locked Rotor Arnps
MCA
MOCP
NEC
OFM
RLA
------
Minimum Circuit Amps
Maximum Overcurrent
Protection
National Electrical Code
Outdoor (Condenser) Fan Motor
Rated Load Amps
*Fuse or HACR circuit breaker.
1-208/230 v 75-kW Electric Heat units must use dual-point wiring. The main table lists the
branch circuit values for the refrigeration part of the system. The following two tables list
the branch circuit values for the electric heat and values for a feeder circuit for both branch
circuits.
POWER
EXHAUST
A
Supply voltage
a
C
Hp
FLA
(ea)
MCA
MOCP*
FLA
--
--
--
156/180
175/200
179/207
kW
=
POWER
EXHAUST
IFM
FLA
Hp
156/180
Qty
FLA
10.6/
9.6
5
16.7/15.2
7.5
24.2_2.0
2
2
2
Hp
1
1
1
POWER
SUPPLY
FLA
5.9
5.9
5.9
DISCONNECT
SIZE
MCA
MOCP*
FLA
169/192
200/225
192/218
184/207
209/225
205/232
177/199
209/225
199/224
192/214
209/225
212/238
186/208
200/225
207/232
201/222
225/225
221/246
Determine
(AB) 457
(BC) 464
(AC) 457
maximum deviation from average voltage.
- 452 = 5 v
- 457 = 7 v
- 455 = 2 v
Maximum
deviation is 7 v.
Determine
percent of voltage imbalance.
7
Imbalance = 100 x
of phase
imbalance is satisfactory
as it is below the maximum
allowable
is more than 2%, contact
452 + 464 + 455
3
1371
3
= 457
12
]
your ]
3. The 75-kW 208/240-v electric heat can be factory installed but it must be wired separately in the field.
4. The convenience
outlet full load amps (FLA) are 5, 3 and 3 for 208/230, 469, 575-v
units, respectively.
5. The FLA load amps provided in the table for electric heaters are based on 208/240, 480
and 600 v.
6. MCA calculation for 50HJ units with electric heaters over 50 kW is = 1.25 x (IFM +
Power Exhaust + Convenience Outlet FLA amps) + 1.00 x (Electric Heater FLA).
v
Average
BC
= 464 Voltage
v
56/75
HEATt
local
electric utility
immediately.
IMPORTANT:
If thecompany
supply voltage
phase imbalance
AC = 455 v
(_
DISCONNECT
SIZE
= 1.53%
is 460-3=60.
AB =452
POWER
SUPPLY
FLA
This amount
2%.
max voltage deviation from average voltage
average voltage
Example:
2.4
156/180
% Voltage
NOTES:
1. In compliance with NEC requirements
for multimotor and combination load equipment
(refer to NEC Articles 430 and 449), the overcurrent protective device for the unit shall
be fuse or HACR breaker. Canadian units may be fuse or circuit breaker.
2. Unbalanced 3-Phase Supply Voltage
Never operate a motor where a phase imhalar_ce in supply voltage is greater than 2%.
Use the folk)wing formula to determine the percent o1 voltage imbalance.
% Voltage Imbalance
= 100 x
1
kW
3.7
020
2.4
56/75
ELECTRIC
HEAT
OFM
2.4
HEAT't
IFM
FEEDER CIRCUIT FOR 208/230 UNIT WITH 75-kW ELECTRIC
VOLTAGE
RANGE
2.4
1
2
HEAT BRANCH CIRCUIT 208/240 75-kW ELECTRIC
2.4
1
2
ELECTRIC
2.4
1
2
0.7
DISCONNECT
SIZE
Qty
2
3
POWER
SUPPLY
Table 4A -- Electrical Data -- Units Without Convenience Outlet (cont)
UNIT
SIZE
50HJ
NOMINAL
VOLTAGE
(3Ph,
6OHz)
VOLTAGE
RANGE
Mln
Max
No. 1
RLA
LRA
COMPRESSOR
No. 2
RLA
LRA
OFM
ELECTRIC
HEAT
No. 3
RLA
LRA
Gty
Hp
_!!FLA
kW
FLA
POWER
EXHAUST
IFM
Hp
FLA
Qty
Hp
POWER
SUPPLY
FLA
(ea)
]
3.7
10.6/9.6
5
16.7/15.2
7.5
24.2/22
19/25
208/230
187
253
22.4
184
22.4
184
22.4
184
4
0.25
30.8/28
3.7
10.6/9.6
5
16.7/15.2
7.5
24.2/22
10
30.8/28
3.7
10.6/9.6
5
16.7/15.2
7.5
24.2/22
10
30.8/28
52/60
1.5
88/50
104/120
56/75t
10.6/9.6
5
16.7/15.2
7.5
24.2/22
10
30.8/28
5.9
101/100
2
1
5.9
107/106
2
3.7
4.8
5
7.6
7.5
11
10
14
3.7
4.8
46O
414
506
10.7
90
10.7
90
10.7
90
4
0.25
5
7.6
7.5
11
10
14
3.7
4.8
5
7.6
7.5
11
10
14
3.7
4.8
5
7.6
30
0.7
50
75
100/100
103/102
125/125
117/115
103/101
125/110
112/109
115/113
125/125
126/123
112/108
125/125
120/116
5.9
124/120
150/125
133/130
100/100
110/110
96/ 95
110/109
5.9
60
2
1
5.9
100/100
103/102
2
1
5.9
107/109
125/125
117/115
103/103
125/110
112/109
115/117
125/125
126/123
112/110
125/125
120/116
124/125
150/125
133/130
143/132
150/150
132/149
96/
2
2
1
1
5.9
5.9
7.5
11
94
2
1
5.9
158/147
151/139
175/150
175/150
145/163
139/155
2
1
5.9
166/154
175/175
152/169
160/148
175/150
147/163
175/162
200/175
161/177
169/155
175/175
155/170
183/170
200/175
169/184
2
1
1
5.9
5.9
89/
88
100/100
96/
95
2
1
5.9
101/100
110/110
110/109
2
1
5.9
96/ 94
107/106
100/100
125/125
103/102
117/115
103/101
125/110
112/109
2
1
5.9
115/113
125/125
126/123
112/108
125/125
120/116
124/120
150/125
133/130
2
2
1
1
5.9
3.1
42
50
46
49
50
53
45
50
49
2
1
3.1
51
49
60
50
56
53
2
1
3.1
55
60
60
52
60
56
59
60
63
44
50
46
51
60
53
47
50
49
3.1
55
60
56
51
59
60
60
53
60
55
60
56
63
70
63
66
80
75
74
80
82
70
80
78
77
80
85
74
80
82
90
90
89
85
2
2
1
1
1
3.1
3.1
2
1
3.1
2
1
3.1
2
2
1
1
3.1
3.1
2
1
3.1
82
78
2
1
3.1
85
90
92
96
1O0
109
104
110
116
100
110
112
107
125
119
104
125
116
112
125
123
2
2
90
94
89/ 88
101/102
2
25
1
95
110/109
96/
1
FLA
96/
110/110
156/180
024
MOCP*
100/100
88
1
2
3.7
MCA
89/
2
2
10
[
DISCONNECT
SIZE
2
1
1
1
3.1
3.1
3.1
12O
127
See legend and notes on next page.
]3
Table 4A -- Electrical Data -- Units Without Convenience
UNIT
SIZE
5OHJ
NOMINAL
VO LTAG E
(3 Ph, 80 HZ)
VOLTAGE
RANGE
MIn
COMPRESSOR
NO. 2
NO. 1
Max
RLA
LRA
RLA
OFM
ELECTRIC
HEAT
NO. 3
LRA
RLA
LRA
Qty
Hp
FLA
iea}
kW
Outlet (cont)
IFM
FLA
POWER
EXHAUST
Hp
FLA
5
6.1
7.5
9
10
11
5
6.1
024
575
518
633
9.3
73
9.3
73
9.3
73
4
0.25
24
7.5
9
10
11
5
6.1
7.5
9
10
11
5
6.1
7.5
9
10
11
Hp
_L4
MCA
39
2
1
2.4
44
50
48
42
50
46
47
50
51
44
50
48
49
60
53
39
45
42
2.4
44
50
48
42
47
50
50
46
51
44
50
48
50
60
53
65
70
60
71
80
65
69
70
63
75
80
69
71
80
66
2
1
48.3
46
78
ELECTRIC
UNIT
SIZE
50HJ
NOMINAL
VOLTAGE
024
208/240
VOLTAGE
RANGE
MIn
Max
LRA
OFM
ELECTRIC
HEAT
NO. 3
LRA
LRA
Qty
(ea)
........
UNIT
SIZE
NOMINAL
VOLTAGE
50HJ
(3 Ph, 80 HZ)
024
208/230
MIn
187
Max
253
COMPRESSOR
NO. 2
NO. 1
RLA
LRA
22.4
RLA
184
22.4
LRA
184
NO. 3
RLA
22.4
LRA
184
Qty
4
Hp
0.25
FLA
(ea)
1.5
LEGEND
FLA
HACR
---
IFM
LRA
---
Full Load Amps
Heating, Air Conditioning and
Refrigeration
Indoor (Evaporator) Fan Motor
Locked Rotor Amps
MCA
MOCP
NEC
OFM
RLA
Minimum Circuit Amps
Maximum Overcurrent
Protection
National Electrical Code
Outdoor (Condenser) Fan Motor
Rated Load Amps
2.4
1
2.4
1
2.4
2
1
2.4
77
83
80
90
71
93
2
1
2.4
89
100
99
86
100
97
92
100
102
89
100
99
95
100
104
2
1
2.4
2
1
2.4
HEATt
POWER
EXHAUST
POWER
SUPPLY
DISCONNECT
SIZE
FLA
Hp
FLA
(ea)
MDA
MOCP*
FLA
--
--
--
156/180
175/200
179/207
kW
56/75
HEATt
POWER
EXHAUST
IFM
FLA
Hp
FLA
3.7
10.6/9.6
5
16.7/15.2
7.5
24.2/22
10
30.8/28
156/180
Maximum
% Voltage
maximum
Qty
2
2
Hp
1
1
POWER
SUPPLY
FLA
5.9
5.9
DISCONNECT
SIZE
MCA
MOCP*
FLA
169/192
200/225
192/218
184/207
200/225
205/232
177/199
200/225
199/224
192/214
200/225
212/238
186/208
200/225
207/232
2
1
5.9
201/222
195/215
225/225
225/225
221/246
215/239
2
1
5.9
209/230
225/250
228/253
deviation from average voltage.
deviation is 7 v.
percent of voltage imbalance.
7
= 100 x
Imbalance
= 1.53%
This amount
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. Canadian 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 o1 voltage imbalance.
of phase
imbalance is satisfactory
as it is below the maximum
local
electric utility
immediately.
IMPORTANT:
If thecompany
supply voltage
phase imbalance
3. The 75-kW 208/240-v
rately in the field.
Imbalance
electric
heat can be factory
5. The FLA load amps provided in the table for electric
and 600 v.
Example: Supply voltage is 460-3-60.
A 8 c
AB=452v
alk)wable
is more than 2%, contact
installed but it must be wired
4. The convenience
outlet full load amps (FLA) are 5, 3 and 3 for 208/230,
units, respectively.
max voltage deviation from average voltage
average voltage
460,
heaters are based on 208/240,
1
your ]
sepa575-v
480
6. MCA calculation for 50HJ units with electric heaters over 50 kW is = 1.25 x (IFM +
Power Exhaust + Convenience Outlet FLA amps) + 1.00 x (Electric Heater FLA).
AC = 455 v
452 + 464 + 455
Average
BC
= 464 Voltage
v
1
(AB) 457 - 452 = 5 v
(BC) 464 - 457 = 7 v
(AC) 457 - 455 = 2 v
*Fuse or HACR circuit breaker.
1-208/230 v 75=kW Electric Heat units must use dual-point wiring. The main table lists the
branch circuit values for the refrigeration part of the system. The following two tables list
the branch circuit values for the electric heat and values for a feeder circuit for both branch
circuits.
= 100 x
2
156/180
Determine
% Voltage
2.4
FLA
42
kW
Determine
------
1
MODP*
45
56/75
ELECTRIC
HEAT
OFM
2
2
IFM
FEEDER CIRCUIT FOR 208/230 UNIT WITH 75-kW ELECTRIC
VOLTAGE
RANGE
2.4
1
2
HEAT BRANCH CIRCUIT 208/240 75-kW ELECTRIC
COMPRESSOR
NO. 2
NO. 1
75
2.4
1
2
0.7
DISCONNECT
SIZE
Qty
2
24.8
POWER
SUPPLY
=
3
1371
3
= 457
]4
Table 4A -- Electrical Data -- Units Without Convenience Outlet (cont)
UNIT
SIZE
50HJ
NOMINAL
VOLTAGE
(3Ph,
6OHz)
VOLTAGE
RANGE
Mln
Max
COMPRESSOR
No. 2
No. 1
RLA
LRA
RLA
LRA
RLA
LRA
ELECTRIC
HEAT
OFM
No. 3
Gty
Hp
_!!FLA
kW
POWER
EXHAUST
IFM
FLA
Hp
FLA
5
16.7/15.2
7.5
24.2/22
10
30.8/28
Oty
Hp
POWER
SUPPLY
FLA
(ea)
MCA
MOCP*
FLA
132/180
175/175
138/138
143/142
175/175
151/150
139/137
175/175
147/144
151/149
175/175
160/158
146/143
175/175
154/151
158/155
200/200
168/164
132/130
175/175
138/136
5.9
143/142
175/175
151/150
139/137
151/149
175/175
175/175
147/144
160/158
146/143
175/175
154/151
158/155
200/200
168/164
151/139
175/175
139/155
166/154
175/175
152/169
160/148
175/175
147/163
175/162
200/175
161/177
169/155
175/175
155/170
]
--
--
2
2
2
19/25
208/230
187
253
47.1
245
47.1
245
6
0.25
52/60
5
16.7/15.2
7.5
24.2/22
10
30.8/28
5
16.7/15.2
7.5
24.2/22
10
30.8/28
5
16.7/15.2
7.5
24.2/22
10
30.8/28
1.5
38/50
56/75t
104/120
156/180
2
--
--
25
460
414
506
19.6
125
19.6
125
6
0.25
30
5
7.6
7.5
11
10
14
5
7.6
7.5
11
10
14
5
7.6
7.5
11
10
14
0.7
50
60
75
LEGEND
FLA
RACR
---
IFM
LRA
---
Full Load Amps
Heating, AirCondgioningand
Refrigeration
Indoor (Evaporator)
Fan Motor
Locked Rotor Amps
MCA
MOCP
NEC
OFM
RLA
------
Minimum Circuit Amps
Maximum Overcurrent Protection
National Electrical Code
Outdoor (Condenser) Fan Motor
Rated Load Amps
90
14
Maximum
deviation is 7 v.
5.9
5.9
2
1
5.9
2
2
1
1
5.9
5.9
2
1
5.9
183/170
132/130
200/200
175/175
169/184
138/136
2
1
5.9
143/142
175/175
151/150
139/137
175/175
147/144
151/149
175/175
160/158
146/143
175/175
154/151
158/155
200/200
168/164
2
2
1
1
1
5.9
5.9
56
60
59
3.1
62
80
66
59
66
60
80
63
70
62
80
66
69
80
73
56
60
59
62
80
66
59
60
63
66
80
70
62
80
66
2
1
3.1
2
1
3.1
2
2
1
1
3.1
3.1
2
1
3.1
69
70
80
80
73
78
2
1
3.1
77
80
85
74
80
82
82
90
89
78
90
85
85
90
92
100
110
112
3.1
107
125
119
104
112
125
125
116
123
108
125
120
115
125
127
2
2
1
1
1
3.1
3.1
2
1
3.1
2
1
3.1
from average w>ltage.
percent of voltage imbalance.
7
100x
= 1.53%
of phase
imbalance is satisfactory
IMPORTANT:
local
electric utility
If thecompany
supply voltage
immediately,
phase
as it is below the maximum
imbalance
allowable
is more than 2%, contact
your
3. The 75-kW 208/240-v electric heat can be factory installed but it must be wired separately in the field.
4. The convenience outlet full load amps (FLA) are 5, 3 and 3 for 208/230, 460, 575-v
units, respectively.
5. The FLA load amps provided in the table for electric heaters are based on 208/240,480
and 600 v.
6. MCA calculation for 50HJ units with electric heaters over 50 kW is = 1.25 x (IFM +
Power Exhaust + Convenience Outlet FLA amps) + 1.00 x (Electric Heater FLA).
max voltage deviatk)n from average voltage
average vogage
AC = 455 v
Average Voltage
BC = 464 v
10
maximum deviation
- 452 = 5 v
- 457 = 7 v
- 455 = 2 v
This amount
2%.
Example: Supply voltage is 460-3-60.
A B C
AB = 452 v
(_
11
1
5.9
% Vogage Imbalance=
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. Canadian 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.
% Voltage Imbalance
= 100 x
7.5
Determine
(AB) 457
(BC) 464
(AC) 457
Determine
*Fuse or HACR circuit breaker.
1-208/230 v 75-kW Electric Heat units must use dual-point wiring. The main table lists the
branch circuit values for the refrigeration part of the system. The following two tables list
the branch circuit values for the electric heat and values for a feeder circuit for both branch
circuits.
7.6
1
5.9
1
2
5
1
[
2
2
028
1
DISCONNECT
SIZE
= 452 + 464 + 455
3
1371
=---;= 457
15
Table 4A -- Electrical Data -- Units Without Convenience
UNIT
SIZE
5OHJ
VOLTAGE
RANGE
NOMINAL
VO LTAG E
(3 Ph, 80 HZ)
MIn
COMPRESSOR
NO. 2
NO. 1
Max
RLA
LRA
RLA
OFM
ELECTRIC
HEAT
NO. 3
LRA
RLA
LRA
Qty
Hp
FLA
iea}
kW
Outlet (cont)
IFM
FLA
POWER
EXHAUST
Hp
FLA
5
6.1
7.5
9
10
11
Qty
Hp
_L4
2
1
2.4
2
1
2
24.8
028
575
518
633
15.8
100
15.8
100
6
0.25
24
46
78
UNIT
SIZE
50HJ
NOMINAL
VOLTAGE
028
208/240
VOLTAGE
RANGE
MIn
Max
LRA
7.5
9
10
11
5
6.1
7.5
9
10
11
5
6.1
75
7.5
9
10
11
OFM
ELECTRIC
HEAT
NO. 3
LRA
LRA
Qty
(ea)
........
UNIT
SIZE
NOMINAL
VOLTAGE
50HJ
(3 Ph, 80 HZ)
028
208/230
MIn
187
COMPRESSOR
NO. 2
NO. 1
Max
RLA
253
47.1
LRA
RLA
245
47.1
LRA
245
NO. 3
RLA
LRA
Qty
6
Hp
0.25
FLA
(ea)
1.5
LEGEND
FLA
HACR
---
IFM
LRA
---
Full Load Amps
Heating, Air Conditioning and
Refrigeration
Indoor (Evaporator) Fan Motor
Locked Rotor Arnps
MCA
MOCP
NEC
OFM
RLA
------
Minimum Circuit Amps
Maximum Overcurrent
Protection
National Electrical Code
Outdoor (Condenser) Fan Motor
Rated Load Amps
*Fuse or HACR circuit breaker.
1-208/230 v 75-kW Electric Heat units must use dual-point wiring. The main table lists the
branch circuit values for the refrigeration part of the system. The following two tables list
the branch circuit values for the electric heat and values for a feeder circuit for both branch
circuits.
A
Supply voltage
a
C
=
60
59
46
60
48
2.4
51
60
54
49
54
60
60
52
57
51
60
54
56
60
59
65
70
60
71
80
65
69
70
63
75
80
69
71
80
66
2.4
2
1
2.4
2.4
1
2.4
2
1
2.4
77
83
80
90
71
93
2
1
2.4
89
100
99
86
100
97
92
100
102
89
100
99
95
100
104
2
1
2.4
2
1
2.4
POWER
EXHAUST
POWER
SUPPLY
DISCONNECT
SIZE
FLA
Hp
FLA
(ea)
MDA
MOCP*
FLA
--
--
--
156/180
175/200
179/207
kW
56/75
HEATt
POWER
EXHAUST
IFM
FLA
Hp
156/180
FLA
5
16.7/15.2
7.5
24.2/22
10
30.8/28
Qty
2
2
2
Hp
1
1
1
POWER
SUPPLY
FLA
5.9
5.9
5.9
DISCONNECT
SIZE
MCA
MOCP*
FLA
177/199
200/225
199/224
192/214
200/225
212/238
186/208
200/225
207/232
201/222
225/225
221/246
195/215
225/225
215/239
209/230
225/250
228/253
Determine
(AB) 457
(BC) 464
(AC) 457
maximum deviation from average voltage.
- 452 = 5 v
- 457 = 7 v
- 455 = 2 v
Maximum
deviation is 7 v.
Determine
percent of voltage imbalance.
7
Imbalance = 100 x
of phase
imbalance is satisfactory
as it is below the maximum
allowable
is more than 2%, contact
452 + 464 + 455
3
1371
3
= 457
16
]
your ]
3. The 75-kW 208/240-v electric heat can be factory installed but it must be wired separately in the field.
4. The convenience
outlet full load amps (FLA) are 5, 3 and 3 for 208/230, 460, 575-v
units, respectively.
5. The FLA load amps provided in the table for electric heaters are based on 208/240, 480
and 600 v.
6. MCA calculation for 50HJ units with electric heaters over 50 kW is = 1.25 x (IFM +
Power Exhaust + Convenience Outlet FLA amps) + 1.00 x (Electric Heater FLA).
v
Average
BC
= 464 Voltage
v
54
56
local
electric utility
immediately.
IMPORTANT:
If thecompany
supply voltage
phase imbalance
AC = 455 v
(_
60
= 1.53%
is 460-3=60.
AB =452
57
51
156/180
This amount
2%.
max voltage deviation from average voltage
average voltage
Example:
60
kW
% Voltage
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. Canadian units may be fuse or circuit breaker.
2. Unbalanced 3-Phase Supply Voltage
Never operate a motor where a phase imhalar_ce in supply voltage is greater than 2%.
Use the folk)wing formula to determine the percent o1 voltage imbalance.
% Voltage Imbalance
= 100 x
52
54
56/75
ELECTRIC
HEAT
OFM
54
60
HEAT't
IFM
FEEDER CIRCUIT FOR 208/230 UNIT WITH 75-kW ELECTRIC
VOLTAGE
RANGE
60
1
2
FLA
48
51
2
1
MODP*
60
DISCONNECT
SIZE
49
2.4
1
2
MCA
46
2.4
1
2
HEAT BRANCH CIRCUIT 208/240 75-kW ELECTRIC
COMPRESSOR
NO. 2
NO. 1
6.1
0.7
48.3
ELECTRIC
5
POWER
SUPPLY
Table 4B -- Electrical Data -- Units With Optional Convenience Outlet
UNIT
SIZE
50HJ
NOMINAL
VOLTAGE
(3Ph,
SOHz)
VOLTAGE
RANGE
MIn
Max
COMPRESSOR
No. 2
No. 1
RLA
LRA
RLA
LRA
OFM
ELECTRIC
HEAT
No. 3
RLA
LRA
Oty
Hp
_"t!FLA
kW
--
187
253
16.7
130
16.7
130
22.4
184
4
0.25
FLA
--
19/25
208/230
IFM
52/60
POWER
EXHAUST
Hp
FLA
3.7
10.6/9.6
5
16.7/15.2
7.5
24.2/22
3.7
10.6/9.6
5
16.7/15.2
7.5
24.2/22
3.7
10.6/9.6
5
16.7/15.2
7.5
24.2/22
3.7
10.6/9.6
5
16.7/15.2
7.5
24.2/22
1.5
38/50
56/75t
104/120
156/180
020
--
--
25
46O
414
506
9
70
9
70
10.7
90
4
0.25
30
3.7
4.8
5
7.6
7.5
11
3.7
4.8
5
7.6
7.5
11
3.7
4.8
5
7.6
7.5
11
0.7
50
60
Oty
Hp
2
1
75
LEGEND
FLA
RACR
---
IFM
LRA
---
Full Load Amps
Heating, AirConditioningand
Refrigeration
Indoor (Evaporator)
Fan Motor
Locked Rotor Amps
MCA
MOCP
NEC
OFM
RLA
------
Minimum Circuit Amps
Maximum Overcurrent Protection
National Electrical Code
Outdoor (Condenser) Fan Motor
Rated Load Amps
90
11
deviation is 7 v.
_"t!FLA MCA
83/ 82
MOCP*
100/100
5.9
95/
94
100/100
89/
88
100/100
FLA
89/ 88
103/101
96/
94
1
5.9
101/
99
110/100
110/108
97/
94
100/100
105/102
2
1
5.9
109/106
125/125
118/116
85/
93
100/100
89/
88
2
1
5.9
99/108
100/110
103/101
2
1
5.9
92/100
107/115
100/110
110/125
96/ 94
110/108
102/109
110/110
105/102
2
1
5.9
116/124
125/125
118/116
150/138
150/150
138/155
164/153
175/175
151/168
157/145
175/150
145/161
172/160
175/175
158/175
167/154
175/175
153/169
181/169
83/ 82
200/175
100/100
167/183
89/ 88
103/101
2
2
1
1
5.9
5.9
2
1
5.9
2
1
5.9
95/
94
100/100
89/
88
100/100
96/
94
2
1
5.9
101/
99
110/100
110/108
97/
94
100/100
105/102
2
1
5.9
109/106
125/125
118/116
2
1
42
50
45
3.1
48
50
52
45
51
50
60
48
56
48
50
52
54
60
59
47
50
45
55
60
52
51
60
48
59
60
56
55
60
52
2
1
3.1
2
1
3.1
2
2
1
1
3.1
3.1
2
1
3.1
63
70
70
80
59
78
2
1
3.1
78
80
85
73
80
81
81
90
88
78
80
85
85
90
92
100
110
112
3.1
108
125
120
103
111
125
125
116
123
108
125
120
115
125
127
2
2
1
1
1
3.1
3.1
2
1
3.1
2
1
3.1
from average w>ltage.
percent of voltage imbalance.
7
100x
Imbalance=
= 1.53%
of phase
imbalance is satisfactory
electric utility
immediately.
I local
IMPORTANT:
If thecompany
supply voltage
phase
as it is below the maximum
imbalance
is more than
allowable
2%, contact
your
3. The 75-kW 208/240-v electric heat can be factory installed but it must be wired separately in the field.
4. The convenience outlet full load amps (FLA) are 5, 3 and 3 for 208/230, 460, 575-v
units, respectively.
5. The FLA load amps provided in the table for electric heaters are based on 208/240,480
and 600 v.
6. MCA calculation for 50HJ units with electric heaters over 50 kW is = 1.25 x {IFM +
Power Exhaust + Convenience Outlet FLA amps) + 1.00 x (Electric Heater FLA).
max voltage deviatk)n from average voltage
average voltage
AC = 455 v
Average Voltage
BC = 464 v
7.5
Maximum
This amount
2%.
Example: Supply voltage is 460-3-60.
A B C
AB = 452 v
(_
7.6
maximum deviation
- 452 = 5 v
- 457 = 7 v
- 455 = 2 v
% Voltage
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. Canadian 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.
% Voltage Imbalance
= 100 x
5
Determine
(AB) 457
(BC) 464
(AC) 457
Determine
*Fuse or HACR circuit breaker.
1-208/230 v 75-kW Electric Heat units must use dual-point wiring. The main table lists the
branch circuit values for the refrigeration part of the system. The following two tables list
the branch circuit values for the electric heat and values for a feeder circuit for both branch
circuits.
4.8
DISCONNECT
SIZE
2
2
3.7
POWER
SUPPLY
= 452 + 464 + 455
3
1371
=.--_= 457
17
Table 4B -- Electrical Data -- Units With Optional Convenience Outlet (cont)
UNIT
SIZE
5OHJ
VOLTAGE
RANGE
NOMINAL
VO LTAG E
(3 Ph, 80 HZ)
MIn
COMPRESSOR
NO. 2
NO. 1
Max
RLA
LRA
RLA
OFM
ELECTRIC
HEAT
NO. 3
LRA
RLA
LRA
Qty
Hp
FLA
iea}
kW
IFM
FLA
POWER
EXHAUST
Hp
FLA
3
3.9
5
6.1
7.5
9
24.8
020
575
518
633
7
55
7
55
9.3
73
4
0.25
NOMINAL
VOLTAGE
020
208/240
VOLTAGE
RANGE
MIn
Max
LRA
7.5
9
3
3.9
_L4
MCA
35
2
1
2.4
40
45
43
38
45
4O
2
1
2.4
42
50
46
40
45
44
45
50
49
39
40
38
5
6.1
7.5
9
3
3.9
5
6.1
7.5
9
46
75
OFM
NO. 3
LRA
LRA
ELECTRIC
HEAT
IH --
Qty
(ea)
........
kW
FLA
Hp
156/180
--
UNIT
SIZE
NOMINAL
VOLTAGE
50HJ
(3 Ph, 80 HZ)
020
208/230
MIn
187
COMPRESSOR
NO. 2
NO. 1
Max
RLA
253
LRA
16.7
RLA
130
16.7
LRA
130
NO. 3
RLA
22.4
LRA
184
ELECTRIC
HEAT
OFM
Qty
4
Hp
0.25
FLA
(ea)
1.5
LEGEND
FLA
HACR
---
IFM
LRA
---
Full Load Amps
Heating, Air Conditioning and
Refrigeration
Indoor (Evaporator) Fan Motor
Locked Rotor Amps
MCA
MOCP
NEC
OFM
RLA
------
Minimum Circuit Arnps
Maximum Overcurrent
Protection
National Electrical Code
Outdoor (Condenser) Fan Motor
Rated Load Amps
*Fuse or HACR circuit breaker.
1-208/230 v 75-kW Electric Heat units must use dual-point wiring. The main table lists the
branch circuit values for the refrigeration part of the system. The following two tables list
the branch circuit values for the electric heat and values for a feeder circuit for both branch
circuits.
A
Supply voltage
B
C
=
1
2.4
41
47
45
50
4O
46
45
50
44
2
1
2.4
51
60
49
66
70
61
72
80
66
69
70
63
75
80
69
73
80
67
156/180
1
2.4
1
2.4
2
1
2.4
79
84
80
90
72
94
2
1
2.4
90
100
100
86
100
97
92
100
102
90
100
100
96
100
106
2
1
2.4
2
1
2.4
POWER
SUPPLY
FLA
(ea)
MDA
--
--
156/180
FLA
10.6/9.6
5
16.7/15.2
7.5
24.2/22
MOCP*
FLA
175/200
179/207
HEATt
POWER
EXHAUST
3.7
I
DISCONNECT
SIZE
Qty
2
2
2
Hp
1
1
1
POWER
SUPPLY
FLA
5.9
5.9
5.9
DISCONNECT
SIZE
MCA
MOCP*
FLA
176/198
200/225
197/224
190/213
200/225
211/237
183/205
200/225
204/230
198/220
200/225
218/244
193/214
200/225
213/238
207/229
225/250
227/252
Determine
(AB) 457
(BC) 464
(AC) 457
maximum deviation from average voltage.
- 452 = 5 v
- 457 = 7 v
- 455 = 2 v
Maximum
deviation is 7 v.
Determine
percent of voltage imbalance.
7
Imbalance = 100 x
of phase
imbalance is satisfactory
as it is below the maximum
allowable
is more than 2%, contact
452 + 464 + 455
3
1371
3
= 457
18
1
your ]
3. The 75-kW 208/240-v electric heat can be factory installed but it must be wired separately in the field.
4. The convenience
outlet full load amps (FLA) are 5, 3 and 3 for 208/230, 460, 575-v
units, respectively.
5. The FLA load amps provided in the table for electric heaters are based on 208/240, 480
and 600 v.
6. MCA calculation for 50HJ units with electric heaters over 50 kW is = 1.25 x (IFM +
Power Exhaust + Convenience Outlet FLA amps) + 1.00 x (Electric Heater FLA).
v
Average
BC
= 464 Voltage
v
2
local
electric utility
immediately.
IMPORTANT:
If thecompany
supply voltage
phase imbalance
AC = 455 v
(_
43
= 1.53%
is 460-3=60.
AB =452
45
HEATt
I
Hp
This amount
2%.
max voltage deviation from average voltage
average voltage
Example:
56/75
45
IFM
FLA
% Voltage
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. Canadian 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 folk)wing formula to determine the percent o1 voltage imbalance.
% Voltage Imbalance
= 100 x
kW
2.4
POWER
EXHAUST
FEEDER CIRCUIT FOR 208/230 UNIT WITH 75-kW ELECTRIC
VOLTAGE
RANGE
1
2
IFM
56/75
2.4
38
2
2
HEAT BRANCH CIRCUIT 208/240 75-kW ELECTRIC
COMPRESSOR
NO. 2
NO. 1
6.1
0.7
78
UNIT
SIZE
50HJ
5
24
48.3
ELECTRIC
3.9
FLA
Hp
1
MODP*
4O
DISCONNECT
SIZE
Qty
2
3
POWER
SUPPLY
Table 4B -- Electrical Data -- Units With Optional Convenience
UNIT
SIZE
50HJ
NOMINAL
VOLTAGE
(3Ph,
6OHz)
VOLTAGE
RANGE
Mln
Max
No. 1
RLA
LRA
COMPRESSOR
No. 2
RLA
LRA
OFM
ELECTRIC
HEAT
No. 3
RLA
LRA
Oty
Hp
_a!!FLA kW
F LA
IFM
POWER
EXHAUST
Hp
F LA
3.7
10.6/9.6
5
16.7/15.2
7.5
24.2/22
Qty
Hp
2
1
2
2
19/25
208/230
187
253
22.4
184
22.4
184
22.4
184
4
0.25
10
30.8/28
3.7
10.6/9.6
5
16.7/15.2
7.5
24.2/22
10
30.8/28
3.7
10.6/9.6
5
16.7/15.2
7.5
24.2/22
10
30.8/28
52/60
1.5
38/50
104/120
2
3.7
10.6/9.6
5
16.7/15.2
7.5
24.2/22
10
30.8/28
3.7
4.8
5
7.6
7.5
11
10
14
3.7
4.8
414
506
10.7
90
10.7
90
10.7
90
4
0.25
5
7.6
7.5
11
10
14
3.7
4.8
5
7.6
7.5
11
10
14
3.7
4.8
5
7.6
30
0.7
50
75
1
F LA
102/101
106/105
125/125
116/115
101/
110/100
109/107
112/111
125/125
123/121
108/106
125/125
118/115
120/118
125/125
131/129
117/113
125/125
125/122
5.9
129/125
150/150
139/136
94/ 93
106/108
100/100
125/125
102/101
116/115
101/100
110/110
109/107
112/115
125/125
123/121
108/109
125/125
118/115
120/124
125/125
131/129
117/116
125/125
125/122
129/131
150/150
139/136
150/138
150/150
138/155
5.9
5.9
5.9
5.9
2
1
5.9
2
2
1
1
5.9
5.9
60
7.5
11
99
2
1
5.9
164/153
157/145
175/175
175/150
151/168
145/161
2
1
5.9
172/160
175/175
158/175
167/154
175/175
153/169
181/169
200/175
167/183
175/161
175/175
161/176
190/176
200/200
174/190
100/100
102/101
2
1
1
5.9
5.9
94/
2
1
106/105
125/125
116/115
101/ 99
112/111
110/100
125/125
109/107
123/121
108/106
125/125
118/115
120/118
125/125
131/129
117/113
125/125
125/122
129/125
150/150
139/136
1
5.9
2
1
5.9
2
2
1
1
93
5.9
2
5.9
3.1
45
50
49
52
60
56
48
50
52
2
1
3.1
54
52
60
60
59
56
2
1
3.1
58
60
63
55
60
60
62
70
67
47
50
49
55
60
56
51
60
52
3.1
59
60
59
55
63
60
70
56
63
59
60
60
67
70
67
70
80
78
78
80
85
73
80
81
81
90
88
78
80
85
85
81
90
90
92
89
2
2
1
1
1
3.1
3.1
2
1
3.1
2
1
3.1
2
2
1
1
3.1
3.1
2
1
3.1
2
1
3.1
2
2
90
MCA
94 /93
DISCONNECT
SIZE
MOCP*
100/100
1
2
460
1
_a!FLA
156/180
024
25
1
POWER
SUPPLY
2
2
56/75t
Outlet (cont)
2
1
1
1
3.1
3.1
3.1
89
100
96
100
110
112
108
125
120
103
125
116
111
125
123
108
125
120
115
125
127
123
13O
See legend and notes on next page.
19
Table 4B -- Electrical Data -- Units With Optional Convenience Outlet (cont)
UNIT
SIZE
5OHJ
NOMINAL
VO LTAG E
(3 Ph, 80 HZ)
VOLTAGE
RANGE
MIn
COMPRESSOR
NO. 2
NO. 1
Max
RLA
LRA
RLA
OFM
ELECTRIC
HEAT
NO. 3
LRA
RLA
LRA
Qty
Hp
FLA
iea}
kW
IFM
FLA
POWER
EXHAUST
Hp
FLA
5
6.1
7.5
9
10
11
24.8
024
575
518
633
9.3
73
9.3
73
9.3
73
4
0.25
24
6.1
7.5
9
10
11
Hp
_L4
MCA
42
2
1
2.4
47
50
51
45
50
49
2
1
5
6.1
48.3
46
7.5
9
10
11
5
6.1
78
75
7.5
9
10
11
UNIT
SIZE
50HJ
NOMINAL
VOLTAGE
024
208/240
VOLTAGE
RANGE
MIn
COMPRESSOR
NO. 2
NO. 1
Max
LRA
OFM
ELECTRIC
HEAT
NO. 3
LRA
LRA
Qty
(ea)
........
UNIT
SIZE
NOMINAL
VOLTAGE
50HJ
(3 Ph, 80 HZ)
024
208/230
MIn
187
Max
253
COMPRESSOR
NO. 2
NO. 1
RLA
LRA
22.4
RLA
184
22.4
LRA
184
NO. 3
RLA
22.4
LRA
184
Qty
4
Hp
0.25
FLA
(ea)
1.5
LEGEND
FLA
HACR
---
IFM
LRA
---
Full Load Amps
Heating, Air Conditioning and
Refrigeration
Indoor (Evaporator) Fan Motor
Locked Rotor Amps
MCA
MOCP
NEC
OFM
RLA
Minimum Circuit Amps
Maximum Overcurrent
Protection
National Electrical Code
Outdoor (Condenser) Fan Motor
Rated Load Amps
2.4
47
50
51
45
51
50
60
49
55
48
50
51
54
60
57
69
70
63
75
80
69
73
80
67
79
80
72
75
80
69
1
2.4
2.4
1
2.4
2
1
2.4
81
86
90
100
75
97
2
1
2.4
92
100
102
90
100
100
96
100
106
93
100
102
99
100
108
1
2.4
1
2.4
HEATt
POWER
EXHAUST
POWER
SUPPLY
DISCONNECT
SIZE
FLA
Hp
FLA
(ea)
MDA
MOCP*
FLA
--
--
--
156/180
175/200
179/207
kW
56/75
HEATt
POWER
EXHAUST
IFM
FLA
Hp
FLA
3.7
10.6/9.6
5
16.7/15.2
7.5
24.2/22
10
30.8/28
156/180
Maximum
% Voltage
maximum
Qty
2
2
Hp
1
1
POWER
SUPPLY
FLA
5.9
5.9
DISCONNECT
SIZE
MCA
MOCP*
FLA
176/198
200/225
197/224
190/213
200/225
211/237
183/205
200/225
204/230
198/220
200/225
218/244
193/214
200/225
213/238
2
1
5.9
207/229
201/221
225/250
225/225
227/252
221/245
2
1
5.9
216/236
225/250
234/259
deviation from average voltage.
deviation is 7 v.
percent of voltage imbalance.
7
= 100 x
Imbalance
= 1.53%
This amount
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. Canadian 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 o1 voltage imbalance.
of phase
imbalance is satisfactory
as it is below the maximum
local
electric utility
immediately.
IMPORTANT:
If thecompany
supply vol
'_ge phase imbalance
3. The 75-kW 208/240-v
rately in the field.
Imbalance
electric
heat can be factory
5. The FLA load amps provided in the table for electric
and 600 v.
Example: Supply voltage is 460-3-60.
A 8 c
AB=452v
alk)wable
is more than 2%, contact your
installed but it must be wired
4. The convenience
outlet full load amps (FLA) are 5, 3 and 3 for 208/230,
units, respectively.
max voltage deviation from average voltage
average voltage
460,
heaters are based on 208/240,
sepa575-v
480
6. MCA calculation for 50HJ units with electric heaters over 50 kW is = 1.25 x (IFM +
Power Exhaust + Convenience Outlet FLA amps) + 1.00 x (Electric Heater FLA).
AC = 455 v
452 + 464 + 455
Average
BC
= 464 Voltage
v
46
(AB) 457 - 452 = 5 v
(BC) 464 - 457 = 7 v
(AC) 457 - 455 = 2 v
*Fuse or HACR circuit breaker.
1-208/230 v 75=kW Electric Heat units must use dual-point wiring. The main table lists the
branch circuit values for the refrigeration part of the system. The following two tables list
the branch circuit values for the electric heat and values for a feeder circuit for both branch
circuits.
= 100 x
50
156/180
Determine
% Voltage
57
42
kW
Determine
------
60
56/75
ELECTRIC
HEAT
OFM
51
52
2
2
IFM
FEEDER CIRCUIT FOR 208/230 UNIT WITH 75-kW ELECTRIC
VOLTAGE
RANGE
55
50
2.4
2
HEAT BRANCH CIRCUIT 208/240 75-kW ELECTRIC
50
1
1
FLA
46
50
2
2
MODP*
50
47
2.4
1
2
ELECTRIC
2.4
1
2
0.7
DISCONNECT
SIZE
Qty
2
5
POWER
SUPPLY
=
3
1371
3
= 457
20
I
I
Table 4B -- Electrical Data -- Units With Optional Convenience
UNIT
SIZE
50HJ
NOMINAL
VOLTAGE
(3Ph,
6OHz)
VOLTAGE
RANGE
Mln
Max
COMPRESSOR
No. 2
No. 1
RLA
LRA
RLA
LRA
OFM
No. 3
RLA
LRA
ELECTRIC
HEAT
Gty
Hp
_!!FLA
kW
POWER
EXHAUST
IFM
FLA
Outlet (cont)
Hp
FLA
5
16.7/15.2
7.5
24.2/22
10
30.8/28
Oty
Hp
POWER
SUPPLY
FLA
(ea)
MCA
MOCP*
FLA
137/135
175/175
144/142
148/147
175/175
157/155
144/142
175/175
152/150
156/154
200/200
166/163
151/148
175/175
160/157
163/160
200/200
173/170
137/135
175/175
144/142
5.9
148/147
175/175
157/155
144/142
156/154
175/175
200/200
152/150
166/163
151/148
175/175
160/157
163/160
200/200
173/170
157/145
175/175
145/161
172/160
175/175
158/175
167/154
175/175
153/169
181/169
200/200
167/183
175/161
175/175
161/176
]
--
--
2
2
2
19/25
208/230
187
253
47.1
245
47.1
245
6
0.25
52/60
5
16.7/15.2
7.5
24.2/22
10
30.8/28
5
16.7/15.2
7.5
24.2/22
10
30.8/28
5
16.7/15.2
7.5
24.2/22
10
30.8/28
1.5
38/50
56/75t
104/120
156/180
2
--
--
25
460
414
506
19.6
125
19.6
125
6
0.25
30
5
7.6
7.5
11
10
14
5
7.6
7.5
11
10
14
5
7.6
7.5
11
10
14
0.7
50
60
75
LEGEND
FLA
RACR
---
IFM
LRA
---
Full Load Amps
Heating, AirCondgioningand
Refrigeration
Indoor (Evaporator)
Fan Motor
Locked Rotor Amps
MCA
MOCP
NEC
OFM
RLA
------
Minimum Circuit Amps
Maximum Overcurrent Protection
National Electrical Code
Outdoor (Condenser) Fan Motor
Rated Load Amps
90
14
Maximum
deviation is 7 v.
5.9
5.9
2
1
5.9
2
2
1
1
5.9
5.9
2
1
5.9
190/176
137/135
200/200
175/175
174/190
144/142
2
1
5.9
148/147
175/175
157/155
144/142
175/175
152/150
156/154
200/200
166/163
151/148
175/175
160/157
163/160
200/200
173/170
2
2
1
1
1
5.9
5.9
59
60
62
3.1
65
80
69
62
69
80
80
66
73
65
80
69
72
90
77
59
60
62
65
80
69
62
80
66
69
80
73
65
80
69
2
1
3.1
2
1
3.1
2
2
1
1
3.1
3.1
2
1
3.1
72
73
90
80
77
81
2
1
3.1
81
90
88
78
80
85
85
90
92
81
90
89
89
100
96
103
125
116
3.1
111
125
123
108
115
125
125
120
127
111
125
123
119
125
130
2
2
1
1
1
3.1
3.1
2
1
3.1
2
1
3.1
from average w>ltage.
percent of voltage imbalance.
7
100x
= 1.53%
of phase
imbalance is satisfactory
IMPORTANT:
local
electric utility
If thecompany
supply voltage
immediately,
phase
as it is below the maximum
imbalance
allowable
is more than 2%, contact
your
3. The 75-kW 208/240-v electric heat can be factory installed but it must be wired separately in the field.
4. The convenience outlet full load amps (FLA) are 5, 3 and 3 for 208/230, 460, 575-v
units, respectively.
5. The FLA load amps provided in the table for electric heaters are based on 208/240,480
and 600 v.
6. MCA calculation for 50HJ units with electric heaters over 50 kW is = 1.25 x (IFM +
Power Exhaust + Convenience Outlet FLA amps) + 1.00 x (Electric Heater FLA).
max voltage deviatk)n from average voltage
average vogage
AC = 455 v
Average Voltage
BC = 464 v
10
maximum deviation
- 452 = 5 v
- 457 = 7 v
- 455 = 2 v
This amount
2%.
Example: Supply voltage is 460-3-60.
A B C
AB = 452 v
(_
11
1
5.9
% Vogage Imbalance=
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. Canadian 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.
% Voltage Imbalance
= 100 x
7.5
Determine
(AB) 457
(BC) 464
(AC) 457
Determine
*Fuse or HACR circuit breaker.
1-208/230 v 75-kW Electric Heat units must use dual-point wiring. The main table lists the
branch circuit values for the refrigeration part of the system. The following two tables list
the branch circuit values for the electric heat and values for a feeder circuit for both branch
circuits.
7.6
1
5.9
1
2
5
1
[
2
2
028
1
DISCONNECT
SIZE
= 452 + 464 + 455
3
1371
=---;= 457
21
Table 4B -- Electrical Data -- Units With Optional Convenience Outlet (cont)
UNIT
SIZE
5OHJ
VOLTAGE
RANGE
NOMINAL
VO LTAG E
(3 Ph, 80 HZ)
MIn
COMPRESSOR
NO. 2
NO. 1
Max
RLA
LRA
RLA
OFM
ELECTRIC
HEAT
NO. 3
LRA
RLA
LRA
Qty
Hp
FLA
iea}
kW
IFM
FLA
POWER
EXHAUST
Hp
FLA
5
6.1
7.5
9
10
11
24.8
028
575
518
633
15.8
100
15.8
100
6
0.25
24
6.1
7.5
9
_L4
MCA
49
2
1
2.4
54
60
57
52
60
55
57
60
6O
54
60
57
59
60
63
49
60
52
2.4
54
60
57
52
57
60
60
55
6O
54
60
57
59
60
63
69
70
63
75
80
69
73
80
67
79
80
72
75
80
69
1
10
11
5
6.1
48.3
46
7.5
9
10
11
5
6.1
78
75
7.5
9
10
11
2
1
2.4
2
1
2.4
2
1
2
UNIT
SIZE
50HJ
NOMINAL
VOLTAGE
028
208/240
VOLTAGE
RANGE
MIn
COMPRESSOR
NO. 2
NO. 1
Max
LRA
OFM
ELECTRIC
HEAT
NO. 3
LRA
LRA
Qty
(ea)
........
UNIT
SIZE
NOMINAL
VOLTAGE
50HJ
(3 Ph, 80 HZ)
028
208/230
MIn
187
COMPRESSOR
NO. 2
NO. 1
Max
RLA
253
47.1
LRA
RLA
245
47.1
LRA
245
NO. 3
2
1
2.4
81
86
90
100
75
97
2
1
2.4
92
100
102
90
100
100
96
100
106
93
100
102
99
100
108
1
RLA
LRA
Qty
6
Hp
0.25
FLA
(ea)
1.5
LEGEND
FLA
HACR
---
IFM
LRA
---
Full Load Amps
Heating, Air Conditioning and
Refrigeration
Indoor (Evaporator) Fan Motor
Locked Rotor Arnps
MCA
MOCP
NEC
OFM
RLA
------
Minimum Circuit Amps
Maximum Overcurrent
Protection
National Electrical Code
Outdoor (Condenser) Fan Motor
Rated Load Amps
*Fuse or HACR circuit breaker.
1-208/230 v 75-kW Electric Heat units must use dual-point wiring. The main table lists the
branch circuit values for the refrigeration part of the system. The following two tables list
the branch circuit values for the electric heat and values for a feeder circuit for both branch
circuits.
A
Supply voltage
a
C
POWER
EXHAUST
Hp
FLA
(ea)
MDA
MOCP*
FLA
--
--
--
156/180
175/200
179/207
=
kW
56/75
HEATt
POWER
EXHAUST
IFM
FLA
Hp
156/180
FLA
5
16.7/15.2
7.5
24.2/22
10
30.8/28
Qty
2
2
2
Hp
1
1
1
POWER
SUPPLY
FLA
5.9
5.9
5.9
DISCONNECT
SIZE
MCA
MOCP*
FLA
183/205
200/225
204/230
198/220
200/225
218/244
193/214
200/225
213/238
207/229
225/250
227/252
201/221
225/225
221/245
216/236
225/250
234/259
Determine
(AB) 457
(BC) 464
(AC) 457
maximum deviation from average voltage.
- 452 = 5 v
- 457 = 7 v
- 455 = 2 v
Maximum
deviation is 7 v.
Determine
percent of voltage imbalance.
7
Imbalance = 100 x
of phase
imbalance is satisfactory
as it is below the maximum
allowable
is more than 2%, contact
452 + 464 + 455
3
1371
3
= 457
22
]
your ]
3. The 75-kW 208/240-v electric heat can be factory installed but it must be wired separately in the field.
4. The convenience
outlet full load amps (FLA) are 5, 3 and 3 for 208/230, 460, 575-v
units, respectively.
5. The FLA load amps provided in the table for electric heaters are based on 208/240, 480
and 600 v.
6. MCA calculation for 50HJ units with electric heaters over 50 kW is = 1.25 x (IFM +
Power Exhaust + Convenience Outlet FLA amps) + 1.00 x (Electric Heater FLA).
v
Average
BC
= 464 Voltage
v
DISCONNECT
SIZE
FLA
local
electric utility
immediately.
IMPORTANT:
If thecompany
supply voltage
phase imbalance
AC = 455 v
(_
POWER
SUPPLY
= 1.53%
is 460-3=60.
AB =452
2.4
156/180
This amount
2%.
max voltage deviation from average voltage
average voltage
Example:
1
kW
% Voltage
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. Canadian units may be fuse or circuit breaker.
2. Unbalanced 3-Phase Supply Voltage
Never operate a motor where a phase imhalar_ce in supply voltage is greater than 2%.
Use the folk)wing formula to determine the percent o1 voltage imbalance.
% Voltage Imbalance
= 100 x
2.4
56/75
ELECTRIC
HEAT
OFM
2.4
52
HEAT't
IFM
FEEDER CIRCUIT FOR 208/230 UNIT WITH 75-kW ELECTRIC
VOLTAGE
RANGE
2.4
1
2
HEAT BRANCH CIRCUIT 208/240 75-kW ELECTRIC
2.4
1
2
ELECTRIC
2.4
1
2
0.7
FLA
Hp
2
MODP*
60
DISCONNECT
SIZE
Qty
2
5
POWER
SUPPLY
nents, remove
section.
TBI
I
FIELD
P
I
POWER
the outdoor
air intake
4.
Remove inner tilter track from shipping position in outdoor section. Position inner filter track so the track is facing outward from the unit. Install the filter track with
4 screws provided.
5.
Apply seal strip (provided) to back flange of both hood
sides where hood side connects to the unit back panel.
See Fig. 15.
Apply seal strip (provided) to top flange of both hood
sides where hood sides connect to the hood top panels.
See Fig. 15.
[nst;dl hood sides to the back panels using the screws from
Step 2. The sloped flanges point outward. The diip edges
of file side panels should face outwm'd as well. The filter
guides should face inward to hold the tilters in place. See
Fig. 15.
SUPPLY
z_
the panel below
€.)W
me_t
.=. i
I
!
I
I
L ...........
EQUIP
6.
GND
J
LEGEND
EQUIP
GND
NEC
TB
---I
7.
Equipment
Ground
National Electrical Code
Terminal Board
NOTE: The maximum
Fig. 12-
wire size for TB1 is 2/0.
Field Power Wiring Connections
8.
9.
THERMOSTAT
ASSEMBLY
10.
I E+ ER[
Jll
1
2
Fig. 13-
NOTE: For units with manual &lmpers, replace the end tilters
with the manual dalnpers. Install the filter in the center
between the manual &lmpers.
3
4
5
6
7
8
11. Inst_fll the filter retainer Uack along the bottom edge of the
outdoor air hood using 4 screws provided. See Fig. 15.
12. Inst_dl top section of the outdoor-tfir hood using 9 screws
provided. See Fig. 15. See Fig. 16 for a picture of the
assembled outdoor-air hood.
Field Control Thermostat Wiring
Set heat anticipator
NOTE: For tilter removal, remove the four screws holding the
tilter retainec The filters can then be removed, cleaned, or
replaced, install file filters by reversing the procedure.
settings as shown in Table 5.
Table 5 -- Heat Anticipator Settings
UNIT SIZE
50HJ
ELECTRIC
HEAT (kW)
25
020-028
5O
75
STAGE 1
(Wl) ON
Voltage
208/240
480
0.2
0.2
0.4
0.4
0.2
0.2
600
0.2
0.2
0.2
MANUAL DAMPER ASSEMBLY-For units equipped
with manual dampers, the assembly process is similar to the
outdoor-air hood for units with economizers. There are two slide
&tmpers shipped with the unit to allow for manual setting of the
outside tfir volume. When assembling the hood, place one of the
manual slide dampers in each of the end positions and the remaining filter in the center position. The manual &Lmpers can
then be moved to the appropriate position and then locked into
place using the screws mounted in the adjustment slots. See
Fig. 17.
STAGES 1 AND 2
(Wl and W2) ON
Voltage
208/240
480
600
0.4
0.4
0.4
0.8
0.8
0.4
0.4
0.4
0.4
Settings may be changed slightly to provide a greater degree
of comfort for a pallicular instalhnion.
Step 8 --
Install
Apply seal strip along the entire length of the bottom
flange of the hood top. See Fig. 15.
Inst;fll the bottom part of the hood top using 4 sclews provided. See Fig. 15.
Remove the packaging from filtel.s (3) and install into the
tilter tracks. Slide the filters to the sides then place the last
tilter into the center of the filter track.
Outdoor-Air
Hood -- Perform
the following procedure to inst_dl file outdoor-air
equipped
with an economize1:
two-position
outdoor-air dmnper:
hood on units
dalnper,
oi"
HOODTOP
1. Remove blank panel from return end of unit (hood section). Save the screws. See Fig. 14 for shipping location
of components.
2. Hood sides are fastened to sides of outdoor air opening.
Remove the hood sides and save the screws (3 each side).
3. Remove the bracket holding the bottom half of the hood
in the shipping position. Remove the hood bottom half
and filtels (or manual &tmpers on units so equipped)
from outdoor section.
HOOD
SIDE
HOOD TOP
BOTTOM HALF)
HOOD
SIDE
SECTION
NOTE: On units without economizers, the components
are attached to the unit basepan. To access the compo-
Fig. 14 -- Outdoor-Air Hood Compartment
Shipping Location
23
TOP HOOD
SECTION
SEAL
STRIP
HOOD
SIDE
ADD
SEAL
STRIP
ADD
STRIP
INNER
FILTER
ADD
SEAL
STRIP
HOOD
SECTION
ADD
SEAL
GUIDE
FILTER
FINER
HOOD
SIDE
DAMPER
(IF EQUIPPED)
NOTE:
Units
with
manual
damper
only
UNIT
BACK
PANEL
use one filter.
Fig. 15 -- Outdoor-Air Hood Details
MOVEABLE
DAMPER
AIR FILTER POSITION
Fig. 16 -- Outdoor-Air
Hood Assembled
j
MOVEABLE
Fig. 17 -- Manual Damper Details
24
DAMPER
Step 9 -- Position Optional Power Exhaust or
Barometric Relief Damper Hood -- The optional
power exhaust or barometric
relief dampers are shipped
assembled and tilted back into the unit for shipping. Brackets and extra screws are shipped in shrink wrap around the
dampers.
1. Remove 9 screws holding each dmnper assembly in
place. See Fig. 18. Each damper assembly is secured with
3 screws on each side and 3 screws along the bottom.
Save screws.
From the inside of the corner post, attach the handle
mounting screws to file handle. Slide the shaft fully into
file handle and tighten the set screws(s) on the disconnect
to lock file shall. Tighten file screws that attach the handle
to the corner post.
8.
Rotate the handle back to the "OFF" position.
9.
Replace _fll panels and doors.
10.
Restore power to unit.
Step 11 -- Install All Accessories
--After
all of
the factory-installed
options have been adjusted, install all
field-inst_dled accessories. Refer to the accessory installation
instructions included with each accessory. Consult the C_urier
Price Pages for accessory package numbeLs for particular
applications.
Use cme when tilting blower assembly. Hoods and blowers
me heavy and can cause injury if diopped.
2.
7.
Pivot the damper assembly outwaM until top edge of
damper assembly rests against inside wall of unit.
3.
Secure each damper assembly to unit with 6 screws
across top (3 screws provided) and bottom (3 screws
from Step 1) of dampo:
4. With screws saved from Step 1, install brackets on each
side of &tmper assembly. See Fig. 19.
5.
Remove tape from damper blades.
Step 10 -- Non-Fused
Disconnect -- The handle
for the factory-installed non-fused disconnect is shipped inside
the unit to prevent the handle from &tmage during shipping.
Follow these steps to complete inst_fllation of the handle.
@
©
Be sure power is shut off to file unit fiom tile building
power supply. Electrical shock could cause personal injury.
1. Open the control box access dool:
2. Remove the small cover plate located on the unit corner
post near the control section.
3. Remove the inner control box covel: The handle and shaft
are located in a plastic bag at the bottom of the control
box.
4.
Insert the square shaft into the disconnect with the pins
vertical. On the 100 amp disconnect the shaft is keyed
into the disconnect and can only be installed one way
with the pins vertical.
5.
Insert the handle through the corner post and onto the
shaft with the handle positioned so that "OFF' is on top.
6.
Rotate the handle to the "ON" position to lock the pins
into the handle.
Fig. 19-
Bracket
and Hood Positioning
__
REMOVE
_
SCREWS
REMOVE
SCREWS\
REMOVE
SCREWS
Fig. 18 -- Power Exhaust or Barometric Relief Damper Mounting Details
25
PRE-START-UP
Unit Preparation
accordance
ble codes.
-- Check that unit has been installed in
with these installation instructions and all applica-
Compressor MountingFailure to observe the following warnings could result in
serious personal injuu:
1. Follow recognized safety practices and wear protective
goggles when checking or servicing refiigerant system.
2. Do not operate compressor or provide any electric power to unit unless compressor terminal cover is in place
and secured.
spring mounted.
down bolts.
Crankcase heaters are energized as long as there is power to the unit and the compressor is
not operating.
I
IMPORTANT: Unit power must be on for 24 hours prior to
start-up. Otherwise, damage to compressor may result.
Compressor
I
Phasing
hnproper wiring will cause compressor stoppage and possible unit &image. Correct wiring by switching leads as indicated below.
On 3-phase units, it is important to be certain the compressors are rotating in the proper direction. To determine whether
or not compressors are rotating in the proper direction, use a
phase-rotation
meter on the unit input power to check for
L I -L2-L3 or clockwise rotation. If the compressor is rotating in
the wrong direction, the suction pressure will not diop and the
discharge pressure will not rise.
NOTE: Indoor or outdoor fan rotation direction may not
indicate proper input power phase sequence, as some 3-phase
units use single-phase fan motors. Check fan rotation where
applicable.
1. Remove all access panels.
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 and handling &_mages such as
broken lines, loose parts, or disconnected wires.
b. Inspect for oil at all refrigerant tubing connections
and on unit base. Detecting oil generally indicates a
refrigerant leak. Leak-test all refrigerant tubing connections using electronic leak detector, halide torch,
or liquid-soap solution.
c. Inspect all field-wiring and factoq-wiring
connections. Be sure that connections are completed and
tight.
d. Inspect coil fins. If damaged during shipping and
handling, ctu'elhlly straighten fins with a fin comb.
4. Verify the following:
a. Make sure that condenser-fan
blades are correctly
positioned in fan orifice. Refer to Condenser-Fan
Adjustment section on page 45 for more details.
b. Make sure that air filters are in place.
c. Make sure that condensate drain trap is filled with
water to ensure proper di'ainage.
d. Make sure that all tools and miscellaneous loose parts
have been removed.
To correct the wrong compressor
the following procedure:
rotation direction, perform
1. Turn off power to the unit and lock out the power.
2.
Switch any two of the incoming unit power leads.
3.
Turn on power to the unit.
4.
Verify corrected
where applicable.
compressor
rotation
Internal Wiring-
Check all electric_d
unit control boxes; tighten as required.
and fan rotation
connections
in
Evaporator
FanFan belt and vmiable pulleys are
factory-inst;dledi See Tables 6-12 for fan performance data. Be
sure that fans rotate in the proper direction. See Table 13 for air
quantity limits. See Table 14 for evaporator fan motor specifications. See Table 15 for fan rpm at v;uious motor pulley settings. See Table 16 for electric resistance heater &_ta. See
Tables 17 and 18 for accessory/FIOP
static pressure.To alter
fan performance, see Evaporator Fan Performance Adjustment
section on page 44.
Condenser Fans and Motors -- Condenser fans and
motors _u'e factory set. Refer to Condenser-Fan
Adjustment
section (page 45) as required.
Return-Air FiltersCheck that correct filters are installed in filter tracks (see Table 1). Do not operate unit without
return-air filters.
has been pertubing.
NOTE: For units with 4-in. filter option, units ;ue shipped with
standard 2-in. filteLs. To install 4-in. filters, the filter spacers
must be removed.
START-UP
Use the following inforlnation and St_ut-Up Checklist
page CL-I to check out unit PRIOR to start-up.
hold-
Crankcase Heater(s)-
Proceed as follows to inspect and prepare the unit for initkd
st¢ut-up:
NOTE: Ensure wiring does not contact any refiigemnt
compressor
Each independent refi'igerant system has a total of 3 Schmder-type
service gage
ports per circuit. One port is located on the suction line, one on
the complessor disch;uge line, and one on the liquid line. Be
sure that caps on the ports are tight.
a. Shut off electrical power to unit and inst_dl lockout tag.
b. Relieve all pressme from system using both high-and
low-pressme ports. Use accepted methods to recover
refrigerant.
c. Cut component connection tubing with tubing cutter
and lemove component from unit.
d. Carefully unsweat remaining tubing stubs when necesstu'y. Oil can ignite when exposed to torch flmne.
Make sure that the st_ut-up checklist
formed and filled out.
Compressors are internally
or remove
Refrigerant Service Ports--
3. Do not remove compressor terminal cover until all electrical sources are disconnected and properly tagged.
4. Relieve all pressure fiom system before touching or disturbing anything inside terminal box if refrigerant leak is
suspected _u_ound compressor
terminals. Use accepted
methods to recover refrigerant.
5. Never attempt to repair soldered connection 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,
wetu _ protective goggles and proceed as
follows:
e.
Do not loosen
on
Outdoor-Air Inlet Screens --Outdoor-air
must be in place before operating unit.
26
inlet screens
Table 6 -- Fan Performance -- 50HJ020 Vertical
AIRFLOW
(Cfm)
35O0
4000
4500
5000
5500
6000
6500
7000
7500
8000
8500
EXTERNAL
STATIC
0.6
PRESSURE
(in.
wg)
0.8
1.0
Rpm
Watts
Bhp
Rpm
Watts
Bhp
Rpm
Watts
Bhp
Rpm
Watts
Bhp
Rpm
Watts
Bhp
423
454
487
522
559
598
637
677
718
759
801
522
675
859
1077
1330
1621
1953
2327
2745
3209
3722
0.60
0.78
0.99
1.24
1.53
1.86
2.25
2.68
3.16
3.69
4.28
521
545
572
601
632
664
698
734
770
808
846
715
884
1082
1311
1573
1873
2212
2593
3018
3489
4007
0.82
1.02
1.24
1.51
1.81
2.15
2.54
2.98
3.47
4.01
4.61
605
625
648
673
700
729
759
791
824
858
893
906
1093
1307
1550
1826
2137
2486
2876
3309
3787
4311
1.04
1.26
1.50
1.78
2.10
2.46
2.86
3.31
3.81
4.36
4.96
679
697
717
739
763
789
817
846
876
907
940
1093
1299
1529
1789
2080
2405
2766
3167
3609
4095
4628
1.26
1.49
1.76
2.06
2.39
2.77
3.18
3.64
4.15
4.71
5.32
747
762
780
800
822
846
871
898
926
956
986
1278
1502
1750
2026
2332
2671
3046
3459
3913
4410
4952
1.47
1.73
2.01
2.33
2,68
3,07
3,50
3,98
4.50
5,07
5.69
Bhp
2.30
2.64
3.01
3.40
3.83
4.29
4.78
5.32
5.90
6.53
7.21
Rpm
1024
1034
1045
1058
1073
1090
1108
1128
1150
1173
1197
Watts
2176
2490
2826
3185
3570
3986
4434
4917
5436
5995
6596
AIRFLOW
(Of m)
3500
4000
4500
5000
5500
6000
6500
7000
7500
8000
8500
AVAILABLE
0.4
0.2
Discharge Units*
AVAILABLE EXTERNAL
1.4
1.2
Rpm
810
823
839
857
877
899
923
948
975
1002
1031
Watts
1461
1703
1969
2261
2583
2937
3327
3753
4219
4727
5280
Bhp
1.68
1.96
2.26
2.60
2.97
3.38
3.83
4.32
4.85
5.44
6.07
Rpm
868
880
894
911
930
950
972
996
1021
1047
1075
Watts
1642
1902
2185
2494
2832
3202
3606
4045
4525
5045
5609
Bhp
1.89
2.19
2.51
2.87
3.26
3.68
4.15
4.65
5.20
5.80
6.45
Rpm
923
934
947
962
979
999
1020
1042
1066
1091
1117
LEGEND
STATIC PRESSURE (in. wg)
1.6
1.8
Watts
1821
2100
2400
2726
3080
3465
3883
4337
4829
5362
5938
Bhp
2.09
2.42
2.76
3.14
3.54
3.98
4.47
4.99
5.55
6.17
6.83
Rpm
975
985
997
1011
1027
1045
1065
1086
1109
1133
1158
Watts
1999
2296
2613
2956
3326
3726
4159
4627
5134
5680
6268
2.0
Bhp
2.50
2.86
3.25
3.66
4.11
4.58
5.10
5.65
6.25
6.90
7.59
NOTES:
1. Maximum continuous bhp is:
Low Range: Not Used
Mid-Low Range: 4.25 (208/230 and 460-v), 3.45 (575-v)
Mid-High Range: 5.75
High Range: 8.63
2. See below for general fan performance notes.
Bhp
-- Brake Horsepower Input to Fan
Watts -- Input Watts to Motor
*Motor drive ranges:
Low Range: Not Used
Mid-Low Range: 647-886 (208/230 and 460-v), 810-1072 (575-v)
Mid-High Range: 897-1139 (208/230 and 460-v). 873-1108 (575-v)
High Range: 1078-1274
All other rpms require field-supplied drive.
GENERAL FAN PERFORMANCE
NOTES:
1. Values include losses for filters, unit casing, and wet coils. See
Tables 17 and 18 for accessory/factory-installed
option static
pressure information.
2. Extensive motor and electrical testing on these units ensures
that the full range of the motor can be utilized with confidence.
Using the fan motors up to the wattage ratings shown will not
NOTES
result in nuisance tripping or premature motor failure. Unit warranty will not be affected. See Evaporator-Fan Motor Performance in Table 14 on page 33 for additional information.
3. Use of a field-supplied motor may affect wire sizing. Contact
your Carrier representative for details.
4. Interpolation is permissible. Do not extrapolate.
27
Table 7 -- Fan Performance -- 50HJ024 Vertical Discharge Units*
AIRFLOW
(Cfm)
5,000
5,500
6,000
6,500
7,000
7,500
8,000
8,500
9,000
9,500
10,000
Rpm
533
571
610
650
691
732
775
817
860
903
947
AIRFLOW
(Cfm)
5,000
5,500
6,000
6,500
7,000
7,500
8,000
8,500
9,000
9,500
10,000
AVAILABLE EXTERNAL
0.4
0.2
Watts
1106
1366
1666
2007
2391
2820
3297
3823
4400
5031
5715
Bhp
1.27
1.57
1.92
2.31
2.75
3.24
3.79
4.40
5.06
5.79
6.57
Rpm
611
643
676
712
748
786
824
863
904
944
985
Watts
2294
2625
2990
3391
3830
4311
4835
5405
6022
6691
7412
Bhp
1.54
1.86
2.21
2.61
3.06
3.57
4.12
4.74
5.41
6.14
6.93
Rpm
682
711
740
772
805
839
874
911
948
986
1025
Bhp
2.64
3.02
3.44
3.90
4.40
4.96
5.56
6.22
6.93
7.70
8.52
Rpm
918
938
960
984
1008
1035
1062
1091
1121
1152
1184
Watts
2527
2875
3254
3670
4123
4617
5153
5735
6364
7042
7773
Bhp
2.91
3.31
3.74
4.22
4.74
5.31
5.93
6.60
7.32
8.10
8.94
Rpm
969
988
1008
1030
1054
1079
1105
1133
1161
1191
1222
LEGEND
Bhp
Watts
Watts
1582
1867
2188
2548
2949
3395
3887
4428
5019
5663
6360
Bhp
1.82
2.15
2.52
2.93
3.39
3.91
4.47
5.09
5.77
6.51
7.32
Rpm
748
773
800
829
859
891
924
958
993
1028
1065
(in. wg)
0.8
Watts
1822
2121
2456
2829
3242
3698
4200
4749
5347
5998
6703
1.0
Bhp
2.10
2.44
2.82
3.25
3.73
4.25
4.83
5.46
6.15
6.90
7.71
Rpm
808
832
857
883
911
941
972
1003
1036
1070
1105
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
1.4
1.6
1.8
1.2
Rpm
865
886
910
935
961
989
1018
1048
1079
1112
1145
Watts
1342
1613
1922
2271
2663
3100
3585
4118
4702
5339
6030
STATIC PRESSURE
0.6
Watts
2760
3123
3518
3948
4415
4922
5472
6065
6706
7395
8135
Bhp
3.17
3.59
4.05
4.54
5.08
5.66
6.29
6.98
7.71
8.51
9.36
Rpm
1018
1035
1054
1075
1098
1122
1147
1173
1201
1229
1259
Watts
2990
3369
3779
4224
4706
5227
5790
6396
7048
7749
8500
Wa_s
2059
2374
2724
3110
3536
4004
4516
5075
5683
6343
7055
2.0
Bhp
3.44
3.87
4.35
4.86
5.41
6.01
6.66
7.36
8.11
8.91
9.78
Rpm
1065
1081
1099
1118
1140
1163
1187
1212
1239
1266
1295
Watts
3219
3614
4040
4499
4996
5530
6106
6725
7390
8102
8864
NOTES:
1. Maximum continuous bhp is:
Low Range: 4.25 (208/230 and 460-v), 5.75 (575-v)
Mid-Low Range: 5.75
Mid-High Range: 8.63
High Range: 11.50
2. See page 27 for general fan performance notes.
--Brake Horsepower Input to Fan
-- Input Watts to Motor
*Motor drive ranges:
Low Range: 685-939 (208/230 and 460-v), 751-954 (575-v)
Mid-Low Range: 949-1206
Mid-High Range: 941-1176
High Range: 1014-1297
All other rpms require field-supplied drive.
28
Bhp
2.37
2.73
3.13
3.58
4.07
4.61
5.19
5.84
6.54
7.29
8.11
Bhp
3.70
4.16
4.65
5.18
5.75
6.36
7.02
7.73
8.50
9.32
10.20
Table 8 -- Fan Performance -- 50HJ028 Vertical Discharge Units*
AIRFLOW
(Cfm)
6,500
7,000
7,500
8,000
8,500
9,000
9,500
10,000
10,500
11,000
11,500
12,000
12,500
EXTERNAL
STATIC
0.6
PRESSURE
(in.
wg)
0.8
1.0
Rpm
Watts
Bhp
Rpm
Watts
Bhp
Rpm
Watts
Bhp
Rpm
Watts
Bhp
Rpm
Watts
Bhp
734
728
746
786
827
870
913
957
1002
1047
1092
1137
1182
2384
2506
2738
3148
3611
4125
4691
5312
5988
6719
7507
8356
9264
2.74
2.88
3.15
3.62
4.15
4.74
5.40
6.11
6.89
7.73
8.63
9.61
10.65
752
792
831
869
905
940
975
1010
1047
1086
1126
1168
1210
2482
2911
3375
3868
4384
4921
5480
6073
6715
7416
8180
9009
9903
2.85
3.35
3.88
4.45
5.04
5.66
6.30
6.98
7.72
8.53
9.41
10.36
11.39
803
844
884
925
964
1003
1042
1079
1115
1150
1185
1220
1256
2,752
3,220
3,734
4,292
4,891
5,529
6,202
6,906
7,635
8,388
9,163
9,975
10,835
3.16
3.70
4.29
4.94
5.63
6.36
7.13
7.94
8.78
9.65
10.54
11.47
12.46
848
887
927
968
1008
1049
1089
1128
1167
1205
1242
1278
1314
2,998
3,484
4,023
4,612
5,251
5,939
6,674
7,453
8,275
9,133
10,025
10,945
11,891
3.45
4.01
4.63
5.30
6.04
6.83
7.68
8.57
9.52
10.50
11.53
12.59
13.68
891
928
966
1006
1046
1086
1127
1167
1207
1247
1286
1325
--
3,250
3,742
4,293
4,901
5,564
6,281
7,053
7,876
8,751
9,674
10,642
11,654
--
3.74
4.30
4.94
5.64
6.40
7.22
8.11
9.06
10.06
11.13
12.24
13.40
--
AIRFLOW
(Cfm)
6,500
7,000
7,500
8,000
8,500
9,000
9,500
10,000
10,500
11,000
11,500
12,000
12,500
AVAILABLE
0.4
0.2
AVAILABLE
1.4
1.2
EXTERNAL
STATIC
1.6
PRESSURE
(in. wg)
1.8
2.0
Rpm
Watts
Bhp
Rpm
Watts
Bhp
Rpm
Watts
Bhp
Rpm
Watts
Bhp
Rpm
Watts
Bhp
934
967
1003
1041
1081
1121
1161
1202
1242
1282
1322
3,521
4,010
4,565
5,181
5,859
6,595
7,390
8,244
9,154
10,118
11,136
4.05
4.61
5.25
5.96
6.74
7.59
8.50
9.48
10.53
11.64
12.81
978
1007
1040
1076
1114
1153
1193
1233
1273
1314
1354
3,822
4,297
4,847
5,465
6,150
6,899
7,710
8,584
9,519
10,514
11,568
4.40
4.94
5.57
6.29
7.07
7.93
8.87
9.87
10.95
12.09
13.30
1023
1048
1078
1111
1147
1184
1223
1263
1303
1343
1384
4,160
4,612
5,148
5,762
6,448
7,202
8,025
8,913
9,866
10,884
11,964
4.78
5.30
5.92
6.63
7.42
8.28
9.23
10.25
11.35
12.52
13.76
1071
1090
1116
1146
1179
1215
1253
1291
1331
1371
......
4,540
4,960
5,474
6,076
6,756
7,512
8,340
9,237
10,203
11,237
5.22
5.70
6.30
6.99
7.77
8.64
9.59
10.62
11.73
12.92
1119
1134
1155
1181
1212
1246
1282
1319
1358
1397
4,961
5344
5,830
6,412
7,081
7,832
8,660
9,563
10,537
11,584
5.71
6.15
6.71
7.37
8.14
9.01
9.96
11.00
12.12
13.32
LEGEND
NOTES:
1.Maximum continuous bhp is:
Low Range: 5.75
Mid-Low Range: 5.75
Mid-High Range: 8.63
High Range: 11.50
2.See page 27 for general fan performance
Bhp
-- Brake Horsepower Input to Fan
Watts -- Input Watts to Motor
*Motor drive ranges:
Low Range: 687-873
Mid-Low Range: 805-1007
Mid-High Range: 941-1176
High Range: 1014-1297
All other rpms require field-supplied
drive.
29
notes.
Table 9 -- Fan Performance -- 50HJ020 Horizontal Discharge Units*
AIRFLOW
(Of m)
AVAILABLE
0.4
0.2
EXTERNAL
STATIC
0.6
PRESSURE
(in. wg)
0.8
1.0
Rpm
Watts
Bhp
Rpm
Watts
Bhp
Rpm
Watts
Bhp
Rpm
Watts
Bhp
Rpm
Watts
Bhp
445
484
524
566
608
651
695
740
785
831
878
546
718
923
1166
1450
1777
2152
2576
3051
3581
4167
0.63
0.83
1.06
1.34
1.67
2.04
2.47
2.96
3.51
4.12
4.79
526
559
596
634
672
712
753
794
836
878
922
712
896
1116
1373
1667
2002
2381
2807
3282
3810
4394
0.82
1,03
1.28
1,58
1,92
2,30
2,74
3,23
3.77
4,38
5.05
603
627
658
692
729
766
805
844
885
925
966
892
1079
1308
1576
1884
2232
2623
3059
3544
4077
4664
1.03
1.24
1.50
1.81
2.17
2.57
3.02
3.52
4.08
4.69
5.36
681
694
717
747
780
815
852
890
929
969
1008
1102
1280
1508
1781
2099
2459
2863
3312
3807
4352
4948
1.27
1.47
1.73
2,05
2,41
2,83
3,29
3,81
4,38
5,01
5.69
761
763
777
800
829
862
897
933
971
1009
1048
1346
1505
1724
1996
2318
2686
3100
3561
4069
4625
5233
1.55
1.73
1.98
2.30
2.67
3.09
3.57
4.10
4.68
5.32
6.02
3500
4000
4500
5000
5500
6000
6500
7000
7500
8000
8500
AIRFLOW
(Of m)
35O0
4000
4500
5000
5500
6000
6500
7000
7500
8000
8500
AVAILABLE
1.4
1.2
Rpm
Watts
Bhp
833
838
854
878
907
939
974
1010
1047
1085
1759
1961
2226
2546
2918
3339
3809
4328
4896
5515
2.02
2,26
2.56
2.93
3.36
3.84
4.38
4.98
5.63
6.34
EXTERNAL
STATIC
1.6
PRESSURE
(in.
wg)
1.8
2,0
Rpm
Watts
Bhp
Rpm
Watts
Bhp
Rpm
Watts
Bhp
Rpm
Watts
Bhp
............
900
909
927
952
981
1013
1047
1083
1120
2223
2473
2787
3158
3583
4059
4587
5165
5795
2.56
2.84
3.21
3.63
4.12
4.67
5.28
5.94
6.66
962
964
976
996
1022
1052
1084
1118
1154
2507
2740
3042
3408
3834
4314
4848
5435
6074
2,88
3.15
3.50
3.92
4.41
4.96
5.58
6.25
6.99
......
1020
1026
1041
1063
1090
1120
1153
1187
3029
3315
3672
4094
4575
5112
5706
6353
3.48
3.81
4.22
4.71
5.26
5.88
6.56
7.31
-1077
1087
1105
1128
1156
1187
1220
-3606
3950
4364
4843
5382
5980
6634
-4.15
4.54
5.02
5.57
6.19
6.88
7.63
LEGEND
NOTES:
1.
Bhp
--Brake Horsepower Input to Fan
Watts -- Input Watts to Motor
Maximum
continuous
bhp is:
Low Range: Not Used
Mid-Low
Range: 4.25 (208/230
Mid-High
Range: 5.75
High Range: 8.63
*Motor drive ranges:
Low Range: Not Used
Mid-Low Range: 647-886 (208/230 and 460-v), 810-1072 (575-v)
Mid-High Range: 897-1139 (208/230 and 460-v), 873-1108 (575-v)
High Range: 1078-1274
All other rpms require field-supplied drive.
2.
30
See page
27 for general
and 460-v),
fan performance
3.45
notes.
(575-v)
Table 10AIRFLOW
(Cfm)
5,000
5,500
6,000
6,500
7,000
7,500
8,000
8,500
9,000
9,500
10,000
Rpm
575
619
663
708
753
800
847
894
941
989
1037
Watts
1193
1483
1817
2198
2629
3112
3650
4244
4896
5610
6386
Bhp
1.37
1.71
2.09
2.53
3.02
3.58
4.20
4.88
5.63
6.45
7.34
Rpm
642
682
723
765
807
850
894
939
983
1029
1075
Watts
862
886
916
949
984
1021
1059
1099
1138
1179
1220
2260
2586
2965
3395
3875
4406
4988
6623
6312
7057
7860
Watts
1400
1702
2048
2435
2871
3357
3897
4491
5145
5858
6634
Bhp
1.61
1.96
2.35
2.80
3.30
3.86
4.48
5.17
5.92
6.74
7.63
AVAILABLE
1,4
1,2
Rpm
50HJ024 Horizontal Discharge Units*
AVAILABLE EXTERNAL
0.4
0.2
AIRFLOW
(Cfm)
5,000
5,500
6,000
6,500
7,000
7,500
8,000
8,500
9,000
9,500
10,000
Fan Performance-
Bhp
2.60
2.97
3.41
3.90
4.46
5.07
5.74
6.47
7.26
8.12
9.04
Rpm
700
737
776
816
857
898
940
982
1025
1069
1113
EXTERNAL
STATIC PRESSURE
0,6
Watts
1603
1918
2276
2677
3125
3621
4169
4770
5428
6145
6923
STATIC
1,6
Bhp
1.84
2.21
2.62
3.08
3.59
4.16
4.80
5.49
6.24
7.07
7.96
Rpm
754
788
825
863
902
942
982
1024
1065
1108
1150
PRESSURE
(in. wg)
0.8
Watts
1810
2134
2503
2916
3377
3885
4445
5056
5723
6447
7231
1.0
Bhp
2.08
2.45
2.88
3.35
3.88
4.47
5.11
5.82
6.58
7.41
8.32
Rpm
808
837
871
906
944
982
1022
1062
1103
1144
1186
(in. wg)
1.8
Wat_
2028
2355
2731
3155
3626
4146
4717
5340
6018
6753
7546
Bhp
2.33
2.71
3.14
3.63
4.17
4.77
5.43
6.14
6.92
7.77
8.68
2,0
Rpm
Watts
Bhp
Rpm
Watts
Bhp
Rpm
Watts
Bhp
Rpm
Watts
Bhp
917
935
960
990
1023
1059
1095
1133
1172
1212
1282
2510
2829
3207
3641
4127
4666
6258
6903
6603
7359
8174
2.89
3.25
3.69
4.19
4.75
5.37
6.05
6.79
7.59
8.46
9.40
972
985
1005
1032
1062
1095
1130
1167
1205
1244
1283
2781
3089
3461
3894
4383
4928
5528
6182
6893
7660
8485
3.20
3.55
3.98
4.48
5.04
5.67
6.36
7.11
7.93
8.81
9.76
1028
1035
1050
1073
1100
1131
1165
1200
1237
1276
1313
3073
3365
3728
4157
4647
5195
5800
6463
7182
7959
8794
3.53
3.87
4.29
4.78
5.34
5.98
6.67
7.43
8.26
9.15
10.11
1084
1086
1096
1114
1139
1167
1199
1232
1268
1305
1342
3384
3660
4009
4430
4918
5468
6077
6745
7472
8258
9103
3.89
4.21
4.61
5.10
5.66
6.29
6.99
7.76
8.59
9.60
10.47
LEGEND
NOTES:
1. Maximum continuous bhp is:
Low Range: 4.25 (208/230 and 460-v), 5.75 (575-v)
Mid-Low Range: 5.75
Mid-High Range: 8.63
High Range: 11.50
2. See page 27 for general fan performance notes.
Bhp -- Brake Horsepower Input to Fan
Watts -- Input Watts to Motor
*Motor drive ranges:
Low Range: 685-939 (208/230 and 460-v), 751-954 (575-v)
Mid-Low Range: 949-1206
Mid-High Range: 941-1176
High Range: 1014-1297
All other rpms require field-supplied drive.
3!
Table 11 -- Fan Performance -- 50HJ028 Horizontal Discharge Units*
AIRFLOW
(Cfm)
6,500
7,000
7,500
8,000
8,500
9,000
9,500
10,000
10,500
11,000
11,500
12,000
12,500
Rpm
Watts
Bhp
Rpm
759
810
862
913
965
1017
1069
1121
1173
1226
1278
1331
2,517
3,020
3,581
4,206
4,894
5,651
6,477
7,376
8,350
9,401
10,532
11,745
2.89
3.47
4.12
4.84
5.63
6.50
7.45
8.48
9.60
10.81
12.11
13.51
804
2,753
853
3,274
903
3,856
953
4,500
1003
5,209
1054
5,988
1105
6,834
1156
7,755
1207
8,751
1259
9,823
1310
10,975
............
AIRFLOW
(Cfm)
Watts
STATIC PRESSURE
0.6
Watts
3,710
4,245
4,854
5,535
6,289
7,115
8,016
8,993
10,048
11,183
Bhp
4.27
4.88
5.58
6.37
7.23
8.18
9.22
10.34
11.56
12.86
Rpm
1003
1037
1075
1116
1159
1204
1249
1296
1343
1390
Watts
4,005
4,527
5,129
5,808
6,563
7,394
8,301
9,286
10,351
11,496
Watts
Bhp
Rpm
Watts
Bhp
Rpm
Watts
Bhp
3.17
3.77
4.43
5.18
5.99
6.89
7.86
8.92
10.06
11.30
12.62
844
891
939
988
1037
1087
1137
1187
1238
1288
1339
2,975
3,509
4,105
4,765
5,491
6,285
7,150
8,089
9,103
10,194
11,366
3.42
4.04
4.72
5.48
6.32
7.23
8.22
9.30
10.47
11.72
13.07
883
928
974
1021
1069
1118
1167
1216
1266
1316
1366
3,202
3,743
4,348
5,019
5,758
6,567
7,446
8,400
9,430
10,538
11,726
3.68
4.30
5.00
5.77
6.62
7.55
8.56
9.66
10.85
12.12
13.49
922
964
1008
1053
1100
1147
1195
1243
1292
1342
--
3,445
3,986
4,596
5,274
6,022
6,841
7,733
8,699
9,744
10,866
--
3.96
4.58
5.29
6.07
6.93
7.87
8.89
10.01
11.21
12.50
--
Bhp
5.41
5.95
6.61
7.36
8.22
9.18
10.22
11.37
12.61
Rpm
1135
1155
1182
1214
1249
1288
1329
1371
--
Watts
5,103
5,547
6,091
6,733
7,467
8,289
9,198
10,193
--
Bhp
4.61
5.21
5.90
6.68
7.55
8.50
9.55
10.68
11.90
13.22
3250
3350
3450
3550
3650
3750
3850
3950
4050
4250
4450
4650
4850
5050
5250
5450
5650
5850
ESP
0.32
0.23
0.17
0.13
0.09
Bhp
1.41
1.44
1.46
1.47
1.49
2.0
Bhp
5.87
6.38
7.01
7.74
8.59
9.53
10.58
11.72
--
notes.
Power Exhaust Fan Performance
ESP
0.70
0.63
0.59
0.56
0.53
0.51
0.48
0.45
0.40
Bhp
1.49
1.52
1.55
1.56
1.58
1.60
1.62
1.64
1.67
V
Watts
1670
1700
1730
1745
1765
1790
1810
1835
1865
208 V
HIGH SPEED
230,460,575
V
208 V
230,460,575
V
ESP
Bhp
Watts
ESP
Bhp
Watts
ESP
Bhp
Watts
ESP
Bhp
Watts
0.60
0.55
0.49
0.43
0.39
0.33
0.27
0.22
0.17
0.00
1.51
1.54
1.56
1.59
1.62
1.64
1.66
1.68
1.74
1.79
1690
1720
1750
1780
1815
1835
1860
1885
1945
2005
0.82
0.78
0.73
0.68
0.64
0.59
0.54
0.49
0.40
0.30
0.22
0.16
0.12
1.62
1.64
1.67
1.70
1.72
1.74
1.76
1.79
1.84
1.89
1.94
1.98
2.02
1810
1840
1870
1900
1930
1950
1975
2000
2060
2115
2170
2215
2260
0.60
0.56
0.51
0.41
0.31
0.20
0.11
0.04
1.85
1.87
1.89
1.92
1.97
2.04
2.09
2.13
2070
2095
2120
2145
2205
2280
2335
2385
-----
0.73
0.69
0.65
0.56
0.47
0.37
0.30
0.23
0.17
0.12
0.07
0.04
1.99
2.01
2.04
2.06
2.12
2.19
2.24
2.28
2.33
2.38
2.40
2.42
2230
2255
2280
2310
2370
2450
2505
2555
2610
2665
2690
2710
LEGEND
Bhp -ESP --
Watts
4,701
5,174
5,744
6,403
7,149
7,978
8,890
9,884
10,960
MEDIUM SPEED
230,460,575
Watts
1580
1610
1635
1645
1665
Rpm
1090
1115
1145
1180
1219
1260
1302
1346
1391
drive.
LOW SPEED
208 V
Bhp
4.98
5.56
6.24
7.01
7.88
8.83
9.88
11.02
12.25
(in. wg)
1.8
NOTES:
1. Maximum continuous bhp is:
Low Range: 5.75
Mid-Low Range: 5.75
Mid-High Range: 8.63
High Range: 11.50
2. See page 27 for general fan performance
Table 12AIRFLOW
(Cfm)
STATIC PRESSURE
1.6
Rpm
Watts
1045
4,334
1075
4,836
1110
5,424
1148
6,096
1189
6,849
1232
7,681
1276
8,591
1321
9,582
1367
10,655
.........
--Brake Horsepower Input to Fan
-- Input Watts to Motor
*Motor drive ranges:
Low Range: 687-873
Mid-Low Range: 805-1007
Mid-High Range: 941-1176
High Range: 1014-1297
All other rpms require field-supplied
1.0
Rpm
LEGEND
Bhp
Watts
(in. wg)
0.8
Bhp
AVAILABLE EXTERNAL
1.4
1.2
Rpm
962
1000
1041
1085
1129
1175
1222
1270
1318
1366
6,500
7,000
7,500
8,000
8,500
9,000
9,500
10,000
10,500
11,000
11,500
12,000
12,500
AVAILABLE EXTERNAL
0.4
0.2
Brake Horsepower
External Static Pressure (in. wg)
32
Table 13 -- Operation Air Quantity Limits
50HJ
UNIT
SIZE
Minimum Cfm
COOLING
020
5,400
Maximum
Cfm
ELECTRIC
HEAT
(Vertical)
MINIMUM
CFM
ELECTRIC HEAT
(Horizontal)
MINIMUM
CFM
4,500
5,400
3,750
4,800
Low Heat (25 kW)
3,750
3,750
High Heat (75 kW)
4,500
5,400
3,750
4,800
Low Heat (25 kW)
3,750
3,750
High Heat (75 kW)
4,500
5,400
3,750
4,800
3,750
3,750
ELECTRIC
HEAT
High Heat (75 kW)
024
9,000
5,500
028
Medium
10,000
Medium
11,500
6,000
Medium
Heat (50 kW)
Heat (50 kW)
Heat (50 kW)
Low Heat (25 kW)
Table 14 -- Evaporator Fan Motor Specifications
5OHJ
UNIT SIZE
DRIVE
Low
Mid-Low
Mid-High
High
ORIENTATION
Vertical
Vertical
Vertical
Vertical
O2O
Low
Mid-Low
Mid-High
High
Horizontal
Horizontal
Horizontal
Horizontal
MOTOR
PIN
NOMINAL
HP
VOLTAGE
----
EFFICIENCY
%
MAX
BHP
MAX
BkW
MAX
AMPS
N/A
N/A
208
N/A
N/A
N/A
N/A
N/A
N/A
N/A
230
N/A
N/A
N/A
N/A
N/A
N/A
N/A
460
N/A
N/A
N/A
N/A
N/A
N/A
N/A
575
N/A
N/A
N/A
N/A
N/A
HD60FK651
3.7
208
3698
85.8
4.25
3.17
10.6
HD60FK651
3.7
230
3698
85.8
4.25
3.17
9.6
HD60FK651
3.7
460
3698
85.8
4.25
3.17
4.8
HD58DL575
3
575
3149
81.7
3.45
2.57
3.9
HD60FL650
5
208
4900
87.5
5.75
4.29
16.7
HD60FL650
5
230
4900
87.5
5.75
4.29
15.2
HD60FL650
5
460
4900
87.5
5.75
4.29
7.6
HD60FL575
5
575
4900
87.5
5.75
4.29
6.1
HD62FL650
7.5
208
7267
88.5
8.63
6.43
24.2
HD62FL650
7.5
230
7267
88.5
8.63
6.43
22
HD62FL650
7.5
460
7267
88.5
8.63
6.43
11
HD62FL575
7.5
575
7267
88.5
8.63
6.43
9
N/A
N/A
208
N/A
N/A
N/A
N/A
N/A
N/A
N/A
230
N/A
N/A
N/A
N/A
N/A
N/A
N/A
460
N/A
N/A
N/A
N/A
N/A
N/A
N/A
575
N/A
N/A
N/A
N/A
N/A
HD60FK651
3.7
208
3698
85.8
4.25
3.17
10.6
HD60FK651
3.7
230
3698
85.8
4.25
3.17
9.6
HD60FK651
3.7
460
3698
85.8
4.25
3.17
4.8
HD58DL575
3
575
3149
81.7
3.45
2.57
3.9
HD60FL650
5
208
4900
87.5
5.75
4.29
16.7
HD60FL650
5
230
4900
87.5
5.75
4.29
15.2
HD60FL650
5
460
4900
87.5
5.75
4.29
7.6
HD60FL575
5
575
4900
87.5
5.75
4.29
6.1
HD62FL650
7.5
208
7267
88.5
8.63
6.43
24.2
HD62FL650
7.5
230
7267
88.5
8.63
6.43
22
HD62FL650
7.5
460
7267
88.5
8.63
6.43
11
HD62FL575
7.5
575
7267
88.5
8.63
6.43
9
LEGEND
Bhp
N/A
P/N
MAX
WATTS
Brake Horsepower
Not Applicable
Part Number
33
Table 14 -- Evaporator Fan Motor Specifications
50HJ
UNIT SIZE
DRIVE
Low
Mid-Low
Mid-High
High
ORIENTATION
Vertical
Vertical
Vertical
Vertical
O24
Low
Mid-Low
Mid-High
High
Low
Mid-Low
Mid-High
High
Horizontal
Horizontal
Horizontal
Horizontal
Vertical
Vertical
Vertical
Vertical
028
Low
Mid-Low
Mid-High
High
Horizontal
Horizontal
Horizontal
Horizontal
MOTOR
PIN
NOMINAL
HP
VOLTAGE
MAX
WATTS
(cont)
EFFICIENCY
%
MAX
BHP
MAX
BkW
MAX
AMPS
HD60FK651
3.7
208
3698
85.8
4.25
3.17
10.6
HD60FK651
3.7
230
3698
85.8
4.25
3.17
9.6
HD60FK651
3.7
460
3698
85.8
4.25
3.17
4.8
HD60FL575
5
575
4900
87.5
5.75
4.29
6.1
HD60FL650
5
208
4900
87.5
5.75
4.29
16.7
HD60FL650
5
230
4900
87.5
5.75
4.29
15.2
HD60FL650
5
460
4900
87.5
5.75
4.29
7.6
HD60FL575
5
575
4900
87.5
5.75
4.29
6.1
HD62FL650
7.5
208
7267
88.5
8.63
6.43
24.2
HD62FL650
7.5
230
7267
88.5
8.63
6.43
22
HD62FL650
7.5
460
7267
88.5
8.63
6.43
11
HD62FL575
7.5
575
7267
88.5
8.63
6.43
9
HD64FL650
10
208
9582
89.5
11.5
8.58
30.8
HD64FL650
10
230
9582
89.5
11.5
8.58
28
HD64FL650
10
460
9582
89.5
11.5
8.58
14
HD64FL575
10
575
9582
89.5
11.5
8.58
11
HD60FK651
3.7
208
3698
85.8
4.25
3.17
10.6
HD60FK651
3.7
230
3698
85.8
4.25
3.17
9.6
HD60FK651
3.7
460
3698
85.8
4.25
3.17
4.8
HD60FL575
5
575
4900
87.5
5.75
4.29
6.1
HD60FL650
5
208
4900
87.5
5.75
4.29
16.7
HD60FL650
5
230
4900
87.5
5.75
4.29
15.2
HD60FL650
5
460
4900
87.5
5.75
4.29
7.6
HD60FL575
5
575
4900
87.5
5.75
4.29
6.1
HD62FL650
7.5
208
7267
88.5
8.63
6.43
24.2
HD62FL650
7.5
230
7267
88.5
8.63
6.43
22
HD62FL650
7.5
460
7267
88.5
8.63
6.43
11
HD62FL575
7.5
575
7267
88.5
8.63
6.43
9
HD64FL650
10
208
9582
89.5
11.5
8.58
30.8
HD64FL650
10
230
9582
89.5
11.5
8.58
28
HD64FL650
10
460
9582
89.5
11.5
8.58
14
HD64FL575
10
575
9582
89.5
11.5
8.58
11
HD60FL650
5
208
4900
87.5
5.75
4.29
16.7
HD60FL650
5
230
4900
87.5
5.75
4.29
15.2
HD60FL650
5
460
4900
87.5
5.75
4.29
7.6
HD60FL575
5
575
4900
87.5
5.75
4.29
6.1
HD60FL650
5
208
4900
87.5
5.75
4.29
16.7
HD60FL650
5
230
4900
87.5
5.75
4.29
15.2
HD60FL650
5
460
4900
87.5
5.75
4.29
7.6
HD60FL575
5
575
4900
87.5
5.75
4.29
6.1
HD62FL650
7.5
208
7267
88.5
8.63
6.43
24.2
HD62FL650
7.5
230
7267
88.5
8.63
6.43
22
HD62FL650
7.5
460
7267
88.5
8.63
6.43
11
HD62FL575
7.5
575
7267
88.5
8.63
6.43
9
HD64FL650
10
208
9582
89.5
11.5
8.58
30.8
HD64FL650
10
230
9582
89.5
11.5
8.58
28
HD64FL650
10
460
9582
89.5
11.5
8.58
14
HD64FL575
10
575
9582
89.5
11.5
8.58
11
HD60FL650
5
208
4900
87.5
5.75
4.29
16.7
HD60FL650
5
230
4900
87.5
5.75
4.29
15.2
HD60FL650
5
460
4900
87.5
5.75
4.29
7.6
HD60FL575
5
575
4900
87.5
5.75
4.29
6.1
HD60FL650
5
208
4900
87.5
5.75
4.29
16.7
HD60FL650
5
230
4900
87.5
5.75
4.29
15.2
HD60FL650
5
460
4900
87.5
5.75
4.29
7.6
HD60FL575
5
575
4900
87.5
5.75
4.29
6.1
HD62FL650
7.5
208
7267
88.5
8.63
6.43
24.2
HD62FL650
7.5
230
7267
88.5
8.63
6.43
22
HD62FL650
7.5
460
7267
88.5
8.63
6.43
11
HD62FL575
7.5
575
7267
88.5
8.63
6.43
9
HD64FL650
10
208
9582
89.5
11.5
8.58
30.8
HD64FL650
10
230
9582
89.5
11.5
8.58
28
HD64FL650
10
460
9582
89.5
11.5
8.58
14
HD64FL575
10
575
9582
89.5
11.5
8.58
11
34
Table 15 -- Fan Rpm and Motor Pulley Settings*
50HJ
UNIT SIZE
MOTOR
RANGE
PULLEY
21/2
TURNS
3
OPEN
0
1/2
1
11/2
2
31/2
4
41/2
5
51/2
6
Mid-Low Range Vertical
647
667
687
707
727
747
767
786
806
826
846
866
886
Mid-High
897
917
937
958
978
998
1018
1038
1058
1079
1099
1119
1139
1078
1094
1111
1127
1143
1160
1176
1192
1209
1225
1241
1258
1274
647
667
687
707
727
747
767
786
806
826
846
866
886
897
917
937
958
978
998
1018
1038
1058
1079
1099
1119
1139
1078
1094
1111
1127
1143
1160
1176
1192
1209
1225
1241
1258
1274
Mid-Low Range Vertical
810
832
854
876
897
919
941
963
985
1007
1028
1050
1072
Mid-High
873
893
912
932
951
971
991
1010
1030
1049
1069
1088
1108
1078
1094
1111
1127
1143
1160
1176
1192
1209
1225
1241
1258
1274
810
832
854
876
897
919
941
963
985
1007
1028
1050
1072
873
893
912
932
951
971
991
1010
1030
1049
1069
1088
1108
High Range Horizontal
1078
1094
1111
1127
1143
1160
1176
1192
1209
1225
1241
1258
1274
Low Range Vertical
685
706
727
749
770
791
812
833
854
876
897
918
939
Mid-Low Range Vertical
949
970
992
1013
1035
1056
1078
1099
1120
1142
1163
1185
1206
Low Range Vertical
020
(230 and 460 volt)
Range Vertical
High Range Vertical
Low Range Horizontal
Mid-Low Range Horizontal
Mid-High
Range Horizontal
High Range Horizontal
Low Range Vertical
020
(575 volt)
Range Vertical
High Range Vertical
Low Range Horizontal
Mid-Low Range Horizontal
Mid-High
Range Horizontal
941
961
980
1000
1019
1039
1059
1078
1098
1117
1137
1156
1176
High Range Vertical
1014
1038
1061
1085
1108
1132
1156
1179
1203
1226
1250
1273
1297
Low Range Horizontal
685
706
727
749
770
791
812
833
854
876
897
918
939
Mid-Low Range Horizontal
949
970
992
1013
1035
1056
1078
1099
1120
1142
1163
1185
1206
Mid-High
024
(230 and 460 volt)
Range Vertical
941
961
980
1000
1019
1039
1059
1078
1098
1117
1137
1156
1176
High Range Horizontal
1014
1038
1061
1085
1108
1132
1156
1179
1203
1226
1250
1273
1297
Low Range Vertical
751
768
785
802
819
836
853
869
886
903
920
937
954
Mid-Low Range Vertical
949
970
992
1013
1035
1056
1078
1099
1120
1142
1163
1185
1206
Mid-High
Range Horizontal
941
961
980
1000
1019
1039
1059
1078
1098
1117
1137
1156
1176
High Range Vertical
1014
1038
1061
1085
1108
1132
1156
1179
1203
1226
1250
1273
1297
Low Range Horizontal
751
768
785
802
819
836
853
869
886
903
920
937
954
Mid-Low Range Horizontal
949
970
992
1013
1035
1056
1078
1099
1120
1142
1163
1185
1206
Mid-High
024
(575 volt)
Range Vertical
941
961
980
1000
1019
1039
1059
1078
1098
1117
1137
1156
1176
High Range Horizontal
1014
1038
1061
1085
1108
1132
1156
1179
1203
1226
1250
1273
1297
Low Range Vertical
687
703
718
734
749
765
780
796
811
827
842
858
873
Mid-Low Range Vertical
805
822
839
856
872
889
906
923
940
957
973
990
1007
Mid-High
Range Horizontal
941
961
980
1000
1019
1039
1059
1078
1098
1117
1137
1156
1176
High Range Vertical
1014
1038
1061
1085
1108
1132
1156
1179
1203
1226
1250
1273
1297
Low Range Horizontal
687
703
718
734
749
765
780
796
811
827
842
858
873
Mid-Low Range Horizontal
805
822
839
856
872
889
906
923
940
957
973
990
1007
Mid-High
O28
(all voltages)
Mid-High
Range Vertical
*Approximate
941
961
980
1000
1019
1039
1059
1078
1098
1117
1137
1156
1176
1014
1038
1061
1085
1108
1132
1156
1179
1203
1226
1250
1273
1297
Range Horizontal
High Range Horizontal
fan rpm shown.
Table 1650HJ
UNIT
SIZE
020,
024,028
HEATER kW
Unit Voltages
240 460 480
Electric Resistance Heater Data
MINIMUM
HEATER
STAGES
% HEAT
PER
STAGE
MAXIMUM
STAG ES*
208
230
575
600
19
23
25
23
25
23
25
2
50/50
2
38
46
50
46
50
44
48
2
50/50
2
56
69
75
69
75
72
78
2
50/50
2
*Maximum number of stages using accessory low-ambient temperature
and low-ambient temperature kit.
NOTE: Heaters are rated at 208,240, 480, and 600 v.
Heating Cfm
Cfm
L/s
4800
2265
HEATER AMPS
208
230
240
460
480
575
600
52.0
58.0
60.0
29.0
30.0
23.0
24.0
104.0
115.0
120.0
58.0
60.0
44.0
48.0
156.0
173.0
180.0
86.0
90.0
72.0
75.0
kit or head _ressure control device
35
Table 17 -- Accessory/FlOP
COMPONENT
EconoMi$er
IV
COMPONENT
EconoMi$er
IV
I
4,000
0.02
I
8,500
0.11
I
I
EconoMi$er IV Static Pressure (in. wg)*
4,500
5,000
5,500
0.03
0.04
0.05
9,000
9,500
0.12
0.13
I
IoF°I
6,000
6,500
7,000
7,500
0.06
0.07
0.08
0.09
IcFMI
10,000
0.15
10,500
11,000
0.16
0.17
I
11,500
0.19
I
I
8,000
0.10
12,000
0.20
LEGEND
FlOP --
Factory-Installed
Option
*The static pressure must be added to external static pressure. The sum and the evaporator entering-air
should then be used in conjunction with the Fan Performance tables to determine blower rpm and watts.
cfm
Table 18 -- Accessory Electric Heat Static Pressure (in. wg)
ELECTRIC
UNIT
50HJ
Unit
Voltages
208/240-3-60
020,
024,028
480-3-60
575-3-60
Cfm
Nominal
Heater Size
(kW)
Pressure Drop
(in. wg)
---
Pressure Drop
(in. wg)
Nominal
Heater Size
(kW)
Pressure Drop
(in. wg)
4,800
0.01
0.02
0.03
5,000
0.01
0.02
0.04
6,000
7,000
0.02
0.04
0.06
0.03
0.06
0.08
8,000
9,000
0.04
0.08
0.12
0.05
0.10
0.15
10,000
0.06
0.13
0.20
11,500
4,800
0.09
0.18
0.27
0.01
0.02
0.03
5,000
0.01
0.02
0.04
6,000
0.02
0.04
0.06
7,000
0.03
0.06
25
50
0.08
0.04
0.05
0.10
0.15
10,000
0.06
0.13
0.20
11,500
0.09
0.18
0.27
4,800
0.01
0.02
0.03
5,000
6,000
0.01
0.02
0.04
0.02
0.04
0.06
7,000
8,000
0.03
0.06
0.08
0.04
0.08
0.12
9,000
0.05
0.10
0.15
10,000
0.06
0.13
0.20
11,500
0.09
0.18
0.27
2.
Brake Horsepower
Factory-Installed Option
NOTES:
1. Heaters are rated at 240 v, 480 v, and 600 v.
36
0.08
75
8,000
9,000
LEGEND
Bhp
FlOP
HEATERS
Nominal
Heater Size
(kW)
0.12
The static pressure must be added to external static pressure.
The sum and the evaporator entering-air cfm should then be
used in conjunction with the Fan Performance table to determine blower rpm, bhp, and watts.
ECONOMISER
IV CONTROLLER
WIRING AND OPERATIONAL MODES -- Determine the EconoMiSer IV control
mode before set up of the control. Some modes of operation may
require different sensors. Refer to Table 19. The EconoMiSer IV
is supplied fiom the factory with a supply-air temperature
sensor and an outdoor air temperature sensol: This allows for
operation of the EconoMi$er
IV with outdoor air dry bulb
changeover control. Additional accessories can be added to
_dlow for different types of changeover control and operation
of the EconoMiSer IV and unit.
Optional
EconoMiSer IV -- See Fig. 20 for EconoMi$er
IV component locations. The optional EconoMi$er IV comes
fi_m the factory fi.dly wiled and assembled. No field wMng or
assembly is required for standard outdoor &-y bulb changeover
operation. Field wiring of accesso U sensors is required for
diffelent operational modes.
ECONOMI$ER
IV STANDARD SENSORS
Outdoor Air Temperature
(OAT) Sensor -- The outdoor air
temperature sensor (HH57AC074)
is a 10 to 20 mA device
used to measure the outdoor-air temperature. The outdoor-air
temperature is used to determine when the EconoMi$er IV can
be used for free cooling. The sensor is factory-installed
on the
EconoMiSer IV in the outdoor airstream. See Fig. 21. The operating range of temperature measurement is 40 to 100 E
Outdoor D U Bulb Changeover
-- The standard controller is
shipped from the factory configmed for outdoor dry bulb
changeover control. The outdoor air and supply-air temperature
sensors me included as stand_u'd. For this control mode, the outdoor temperature is compaled to an adjustable set point selected
on the control. If the outdoor-air temperatme is above the set
point, the EconoMi$er IV will adjust the outdoor-air dampers to
minimum position. If the outdoor-air temperature is below the
set point, the position of the outdoor-air dalnpel_ will be controlled to provide free cooling using outdoor ail: When in this
mode, the LED next to the free cooling set point potenfiometer
will be on. The changeover temperature set point is controlled
by the free cooling set point potentiometer located on the control. The sc_de on the potentiometer is A, B, C, and D. See
Fig. 22 for the corresponding temperature changeover values.
Supply-Air Temperature
(SAT) Sensor
-The supply-air
temperature sensor is a 3 K thermistor located at the outlet of
the indoor fan. See Fig. 21. This sensor is factoly installed. The
operating range of temperature measmement is 0 ° to 158 E
The temperature sensor is a short probe with blue wires
running to it.
Outdoor Air Lockout Sensor
-- The Economi$er
IV is
equipped with an ambient temperature lockout switch located
in the outdoor airstream which is used to lock out the compressors below a 42 F ambient temperature.
Table 19 -- EconoMi$er IV Sensor Usage
APPLICATION
ECONOMI$ER
IV WITH OUTDOOR
DRY BULB SENSOR
Accessories
Outdoor
Differential
Single
Air Dry Bulb
None. The outdoor
Dry Bulb
CO2 for DCV Control using a
Wall-Mounted CO2 Sensor
CO2 Sensor
Required
air dry bulb sensor
CRTEMPSN002A00*
Accessories
is factory
installed.
(2) CRTEMPSN002A00*
None. The single
_)
enthalpy
sensor
is factory
installed.
CRENTDIF004A00*
33ZCSENCO2
and
33ZCSENCO2133ZCASPCO2**
Required
CRTEMPSN002A00*
HH57AC078
and
CRENTDIF004A00*
Differential Enthalpy
Duct-Mounted
ECONOMISER
IV WITH SINGLE
ENTHALPY
SENSOR
HH57AC078
Enthalpy
CO2 for DCV Control using a
AIR
33ZCSENC02
CRCBDiOX005A001-1-
and
33ZCSENCO2133ZCASPCO2**
*CRENTDiF004A00
and CRTEMPSN002A00
accessories
are used on many different base units. As such, these
needed for installation.
1-33ZCSENCO2
is an accessory CO2 sensor.
**33ZCASPCO2
is an accessory aspirator box required for duct-mounted
applications.
1-1-CRCBDIOX005A00
is an accessory that contains both 33ZCSENCO2
and 33ZCASPCO2
accessories.
37
CRCBDIOX005A001-1-
kits may contain
parts that will not be
DAMPER
ASSEMBLY
WIRE
HARNESS
DAMPER
ACTUATOR
ECONOMIZER
BLOCK OFF
Fig. 20 i
EconoMiSer IV Component
Locations (Exploded
View)
19
LED
_ON
18
17
16-
LED ON
- LED OFF
15
<
E14
LED O_
13
12
LED ON-
--
11
10
9
4O
45
50
55
60
65
DEGREES
Fig. 21 i
Supply-Air Temperature Sensor Location
Fig. 22 i
38
70
75
80
85
90
95
100
FAHRENHEIT
Outdoor-Air Temperature Changeover
Set Points
Differential Dry Bulb Control -- For differentkd cfly bulb
control the stan&u_d outdoor dry bulb sensor is used in conjunction with an additional accessory c_h_bulb sensor (part number
CRTEMPSN002A00).
Tile accessory sensor must be mounted
in the return ail_tream. Wiring is provided in file EconoMi$er
IV wiling h_u'ness. See Fig. 23.
In this mode of operation, the outdoor-air temperature is
compared to the return-air temperature and the lower temperature airstream is used for cooling. When using this mode of
changeover control, turn file enth_flpy set point potentiometer
fully clockwise to the D setting.
Outdoor Enthalpy Changeover -- For enth_dpy control, accesso U enthalpy sensor (p_ut number HH57AC078)
is required.
Replace the standmd outdoor @ bulb temperature sensor with
the accessory enthalpy sensor in file same mounting location.
When file outdoor air enthalpy rises above the outdoor enthalpy
changeover set point, the outdoor-air &tmper moves to its minimum position. The outdoor enthalpy changeover set point is set
with the outdoor enth_dpy set point potentiometer
on the
EconoMiSer IV controllel: The set points me A, B, C, and D.
See Fig. 24. The factory-installed 620-ohm jumper must be in
place across termin_ds SR and + on the EconoMiSer IV controllel: See Fig. 23.
Differential Enthalpy Control
-- For differentkd
enthalpy
control, the EconoMiSer
IV controller uses two enthalpy
sensors (HH57AC078
and CRENTDIF004A00),
one in the
outside air and one in the return air duct. The EconoMiSer [V
controller compares file outdoor air enthalpy to the return air
enthalpy to determine
EconoMi$er
[V use. The controller
selects the lower enthalpy air (return or outdoor) for cooling.
For example, when file outdoor air has a lower enthalpy than
the return ail: the EconoMiSer IV opens to bring in outdoor air
for free cooling.
Replace file standard outside air dry bulb temperature
sensor with the accessory enthalpy sensor in the same mounting location. Mount the return air enth_dpy sensor in the return
air duct. Wiring is provided in the EconoMiSer
IV wiring
harness. See Fig. 23. The outdoor enth_dpy changeover
set
point is set with the outdoor enthalpy set point potentiometer
on file EconoMi$er
IV controllel: When using this mode of
changeover control, turn the enthalpy set point potentiometer
fully clockwise to the D setting. See Fig. 25.
Indoor Air Quality (IAQ) Sensor Input -- The IAQ input
can be used for demand control ventilation control based on the
level of CO2 measured in the space or return air duct.
Mount the optional IAQ sensor according to manufacturer
specifications. The IAQ sensor should be wired to the AQ and
AQI terminals of the controllel: Adjust the DCV (demand
controlled ventilation)
potentiometels
to correspond
to the
DCV voltage output of file indoor air quzdity sensor at the
user-determined
set point. See Fig. 26.
If a separate field-supplied transformer is used to power the
IAQ sensor, the sensor must not be grounded
or the
EconoMi$er IV control board will be dmnaged.
Exhaust Set Point Adjustment
-- The exhaust set point will
determine when the exhaust fan runs based on dmnper position
(if accessory power exhaust is insLdled). The set point is modified with the Exhaust Fan Set Point (EXH SET) potentiometel:
See Fig. 25. The set point represents the damper position above
which the exhaust fans will be turned on. When there is a c_dl
for exhaust, the EconoMiSer IV controller provides a 45 _+15
second delay before exhaust fan activation to _dlow the dampers to open. This delay allows the damper to reach the appropriate position to avoid unnecessmy fan overload.
LEGEND
-4RA_>Pu-6
PU-B _I_BLU']
-_LU_> _i-S
I
PLH
ECB
I
<_-- --
-RED-N
I
-- --RED ---_
-p_
_
PL1-9
[_>
IA --Indoor Air
IAQ -- Indoor Air Quality
OA -- Outdoor Air
OAS-- Outdoor-Air Temperature Sensor
PL -- Plug
RAS-- Return-Air Temperature Sensor
SAT -- Supply-Air Temperature Sensor
PLI-12
ORN
_ Pu-l
N
MINIMUM
BI
•
I
GRA
I
..I FPNK_
-- -BLU-_C)--
_
1_--
BLK
IED
A_.I_BLK-O
PLI-IO (_-
1
-- -GRA@
-REI:
,,i
i
Tf"
I
I;i +L
L,_U--,&'
14
I
SAT
1
'-"-'
...........
L _
_I
BR _
\\
Loo_c-Yl
I;_-_
OR_
_
PL.
"k
RED
\
_[_
_D41EN
Fig. 23 -- EconoMi$er IV Wiring
39
_STALLINO
IA ENTHALPY
OR
RETURN
AIR SENSOR REMOVE
6L_O_'_
RESISTOR _ETWEEN
SR+ & _
AN0
":|
(_--IS BISE_CEO
WHEN
DA ENII.IALPYIS INSTALLED
_c_iz_
SVTTCH
ENA_-E
ACCY
CDNNZCT
BLU &
ORN
VIES
CONTROL
CONTROL
85
90
95
100
105
110
(29)
(32)
(35)
(38)
(41)
(43)
POINT
CURVE
APPROX. °F (°C)
AT 50% RH
A
73 (23)
B
70/21 )
C
D
67 (19)
63 (17)
LIMIT
CURVE
35
40
45
50
55
60
65
70
75
80
85
90
95
100
105
110
(2)
(4)
(7)
(10)
(13)
(16)
(18)
(21)
(24)
(27)
(29)
(32)
(35)
(38)
(41)
(43)
DRY
BULB
APPROXIMATE
TEMPERATURE
Fig. 24 -- Enthalpy
i
°F (°C)
Changeover
Set Points
CO 2 SENSOR MAX RANGE SETTING
EXHAUST
FAN SETPOtNT
6000
LED LIGHTS
WHEN EXHAUST
CONTACT tS MADE
MINIMUM
POSITION
5000
DAMPER
SETTING
z
2
MAXIMUM DAMPER
DEMAND CONTROL
VENTILATION
SET POINT
+800
3000
LED LIGHTS WHEN_
DEMAND CONTROL
VENTILATION
INPUT
IS ABOVE SET POINT
_1000
z
+1100
2000
_900
w
z
<
DEMAND CONTROL
VENTILATION SET POINT
LED LIGHTS WHEN
OUTDOOR AIR IS
2
ENTHALPY
SET POINT
Fig. 25 -- EconoMi$er
IV Controller
and LED Locations
ppm
ppm
ppm
ppm
1000
3
4
5
6
7
DAMPER VOLTAGE FOR MAX VENTILATION
FREE
COOLING
SUITABLE
FOR
CHANGEOVER
4000
8
RATE
Fig. 26 -- 002 Sensor Maximum Range Setting
Potentiometer
40
Minimum Position Control -- There is a minimum damper
position potentiometer on the EconoMiSer IV controllel: See
Fig. 25. The minimum dmnper position maintains the minimum airflow into the building during the occupied period.
When using demand ventilation, the minimum damper
position represents the minimum ventilation position for VOC
(volatile organic compounds)
ventilation requirements.
The
maximum demand ventilation position is used for fully occupied ventilation.
When demand ventilation control is not being used, the
minimum position potentiometer should be used to set the occupied ventilation position. The maximum demand ventilation
position should be turned fully clockwise.
Adjust the minimum position potentiometer
to fdlow the
minimum amount of outdoor air. as required by local codes, to
enter the building. Make minimum position adjustments with
fit least 10° F temperature difference between the outdoor and
return-air temperatures. To determine the minimum position
setting, perfoml the following procedure:
1. Calculate the appropriate mixed air temperature
following formula:
OA
RA
(To x l-q--if(57 + (TR x l-q--if(57 = TM
is provided by the black jumper from terminal TR to terminal
N. When unoccupied mode is desired, install a field-supplied
timeclock lhnction in place of the jumper between TR and N.
See Fig. 23. When the timeclock contacts are closed, the
EconoMiSer IV control will be in occupied mode. When the
timeclock contacts are open (removing the 24-v signal from
terminal N), the EconoMiSer IV will be in unoccupied mode.
Demand Control Ventilation
-- When using the EconoMiSer IV for demand control ventilation, there are some equipment selection criteria which should be considered. When
selecting the heat capacity and cool capacity of the equipment,
the maximum ventilation rate must be evfduated for design
conditions. The maximum damper position must be calculated
to provide the desired fresh all:
Typically the maximum ventilation rate will be about 5 to
10% more than the typical cfm required per pel.son, using normfd outside air design criteria.
A proportional anticipatory strategy should be taken with
the following conditions:
a zone with a large area, varied
occupancy, and equipment that cannot exceed the required
ventilation rote fit design conditions. Exceeding file required
ventilation rate means the equipment can condition air at a
maximum ventilation rate that is greater than the required
ventilation rate for maximum
occupancy.
A proportionalanticipatory
strategy will cause file fresh air supplied to
increase as the room CO2 level increases even though the CO2
set point has not been reached. By the time the CO2 level
reaches the set point, the damper will be fit maximum ventilation and should maintain the set point.
In order to have the CO2 sensor control the economizer
damper in this manner, first determine the damper voltage
output for minimum or base ventilation. Base ventilation is the
ventilation required to remove contaminants
during unoccupied periods. The following equation may be used to determine
the percent of outside-air entering the building for a given
damper position. For best results there should be at least a
10 degree difference in outside and return-air temperatures.
using the
To = Outdoor-Air Temperature
OA = Percent of Outdoor Air
TR = Return-Air Telnperature
RA = Percent of Return Air
TM = Mixed-Air Temperature
As an exmnple, if local codes require 10% outdoor
during occupied conditions, outdoor-air temperature
60 IF.and return-air temperature is 75 IF.
air
is
(60 x. 10) + (75 x .90) = 73.5 F
2.
Disconnect
TI.
the supply-air
3.
Ensure that
terminals P
used, make
Fig. 23 and
turned lully
Connect 24
the factory-installed jumper is in place across
and PI. If remote damper positioning is being
sure that the terminals are wired according to
that the minimum position potentiometer
is
clockwise.
vac across terminals TR and TRI.
4.
5.
sensor from terminals
T and
OA 7 + (TR x l-q--if(5-7
RA
(To x l-q--if(5= TM
To = Outdoor-Air Temperature
OA = Percent of Outdoor Air
TR = Return-Air Temperature
RA = Percent of Return Air
TM = Mixed-Air Temperature
Cmefully adjust the minimum position potentiometer
until file measured mixed-air temperature matches the
caiculated vaiue.
Once base ventilation has been determined, set the minimum damper position potentiometer to the correct position.
6. Reconnect the supply-air sensor to terminals T and Tl.
Remote control of the EconoMiSer IV dmnper is desirable
when
requiring
additional
temporary
ventilation.
If a
field-supplied remote potentiometer (Honeywell pfut number
$963B11287 is wired to the EconoMiSer
IV controller, the
minimum position of the damper can be controlled from a remote location.
To control the minimum damper
the factory-installed jumper on the
EconoMiSer IV controllel: Wire the
ter to the P and PI termimds on file
See Fig. 23.
The same equation can be used to determine the occupied or
maximum ventilation rote to the building. For exmnple, tin
output of 3.6 volts to the actuator provides a base ventilation
rate of 5% and tm output of 6.7 volts provides the maximum
ventilation rate of 20% (or base plus 15 cfm per person). Use
Fig. 26 to determine the maximum setting of the CO2 sensor.
For example, a 1100 ppm set point relates to a 15 cfin per
person design. Use the 1100 ppm curve on Fig. 26 to find the
point when the CO2 sensor output will be 6.7 volts. Line up the
point on the graph with the left side of the chmt to determine
that the range configuration for the CO2 sensor should be 1800
ppm. The EconoMiSer IV controller will output the 6.7 volts
fi_m the CO2 sensor to the actuator when the COo concentration in the space is fit 1100 ppm. The DCV set point may be left
fit 2 volts since the CO2 sensor voltage will be ignored by the
EconoMi$er
IV controller until it rises above the 3.6 volt
setting of the minimum position potentiometel:
position remotely, remove
P and PI terminals on the
field-supplied potentiomeEconoMiSer IV controllel:
Damper Movement -- Damper movement from full open to
full closed (or vice versa) takes up to 21/2 minutes.
Thermostats
-- The EconoMi$er IV control works with conventional thermostats that have a YI (cool stage 1), Y2 (cool
stage 27, WI (heat stage 1), W2 (heat stage 27, and G (fan). The
EconoMiSer IV control does not support space temperature
sensors like the T55 or T56. Connections are made at the thermostat terminal connection board located in the main control
box.
Once the fully occupied damper position has been determined, set the maximum damper demand control ventilation
potentiometer
to this position. Do not set to the maximum
position as this can result in over-ventilation
to the space and
potential high-humidity levels.
Occupancy Control -- The factory default configuration for
the EconoMiSer IV control is occupied mode. Occupied status
41
Operating
Sensor Configuration
-- Tile CO2
sensor
has preset
standard voltage settings that can be selected anytime after the
sensor is powered up. See Table 20.
CO.2
Use setting 1 or2 for Carrier equipment. See Table 20.
1. Press Clem" and Mode buttons. Hold at least 5 seconds
until the sensor enters the Edit mode.
2.
Press Mode twice. The STDSET
3.
Use the Up/Down
Table 20.
Menu will appeal:
4.
Press Enter to lock in file selection.
button to select the preset numbec
See
5. Press Mode to exit and resume normal operation.
The custom settings of the CO2 sensor can be changed anytime after the sensor is energized. Follow the steps below to
change the non-standard settings:
1. Press Cletu and Mode buttons. Hold at least 5 seconds
until the sensor enters the Edit mode.
2.
Press Mode twice. The STDSET
3.
Use the Up/Down
and press Enter.
4.
Use the Up/Down button to toggle through each of the
nine vmiables, starting wifll Altitude, until file desired
setting is reached.
Press Mode to move through the vmiables.
5.
6.
If more cooling is required, the thermostat will call for a
second stage of cooling, energizing Y2. This will _dlow relay
CRI to energize, which in turn energizes the compressor
contactor
(C.CI
on three-compressor
units or C.BI on
two-compressor
units). The second stage compressor
(CI on
three-compressor
units or B I on two-compressor
units is then
started.
Menu will appeal:
button to toggle to the NONSTD
menu
HEATING.
Press Enter to lock in the selection,
continue to the next variable.
20 -- 002 Sensor
OUTPUT
VENTILATION
RATE
(ofm/Person)
Proportional
Any
Proportional
Any
3
Exponential
Any
4
Proportional
15
Proportional
20
6
Exponential
15
7
Exponential
20
1
2
Interface w/Standard
Building Control System
5
Economizer
8
9
Health & Safety
Parking/Air Intakes/
Loading Docks
ECONOMIZER
units have 2 stages of electric heat.
If additional heating is required, file thermostat will call for
a second stage of heating, energizing W2. This will energize
the second stage of electric heat.
COOLING. UNITS WITH ECONOMISER
IV -- When free
cooling is not available, the compressol_ will be controlled by
the zone themlostat.
When free cooling is available, the
outdoor-air damper is modulated by the EconoMi$er IV control to provide a 50 to 55 F mixed-air temperature into the zone.
As the mixed-air temperature fluctuates above 55 or below 50
K the dampel_ will be modulated (open or close) to bring the
mixed-air temperatme back within control.
If normal rooftop heating and cooling operation is not
adequate for the outdoor humidity level, an energy recovery
and/or a dehumidification
option should be considered.
EQUIPMENT
WITHOUT
When the thermostat calls for one stage of heating, Wl is
energized. The themlostat must be configured such that the
blower output (G) is energized when there is a WI call for
heating. The indoor-fan contactor (IFC) and first stage electric
heat contactor(s) me energized and the indoor-fan motol: and
first stage electric heater me started.
Dehumidification
of Fresh Air with DCV Control -- Information from ASHRAE
(American
Society
of Heating,
Refi'igeration, and Air Conditioning Engineers) indicates that
the largest humidity load on any zone is the fresh air introduced. For some applications, a device such as a 62AQ energy
recovery unit is added to reduce the moisture content of the
fiesh air being brought into the building when the enthalpy is
high. In most cases, the norm_d heating and cooling processes
are more than adequate to remove the humidity loads for most
commercial applications.
SETTING
UNITS
NOTE: The 50HJ020-028
then press Mode to
Table
Sequence
COOLING.
UNITS WITHOUT
ECONOMIZER
-- When
the thermostat calls for one stage of cooling, YI and G are energizedi The indoor-fan conmctor (IFC) and complessor contactor(s) (C.AI and C.BI on three-compressor
units or C.AI
only on two-compressor
units), and outdoor-fan
contactors
(OFCI and OFC2 when outdoor temperature is above FCS
[fan control switch] setting) are energized and the indoor-fan
motol: compressor(s) (A 1 and BI on three-compressor
units or
A 1 only on two-compressor
units), and outdoor fans controlled
by OFCI are sttutedi If the outdoor temperature is above the
setting of the fan control switch, the outdoor fans controlled by
OFC2 are _dso stm-ted.
Standard
ANALOG
OUTPUT
0-10V
4-20 mA
2-10V
7-20 mA
0-10V
4-20 mA
0-10V
4-20 mA
0-10V
4-20 mA
0-10V
4-20 mA
0-10V
4-20 mA
Settings
CO2
CONTROLRANGE
(ppm)
OPTIONAL
RELAY SETPOINT
(ppm)
RELAY
HYSTERESIS
(ppm)
0-2000
1000
50
0-2000
1000
50
0-2000
1100
50
0-1100
1100
50
0- 900
900
50
0-1100
1100
50
0- 900
900
50
Proportional
0-10V
4-20 mA
0-9999
5000
500
Proportional
0-10V
4-20 mA
0-2000
700
50
LEGEND
ppm -- Parts Per Million
42
Above 50 F supply-air temperature, the dmnpers will modulate from 100% open to the minimum open position. From 50 F
to 45 F supply-air temperature, the &Lmpers will maintain at
the minimum open position. Below 45 F the dampers will be
completely shut. As the supply-air temperature rises, the dampers will come back open to the minimum open position once
the supply-air temperature nses to 48 E
panel is removed, the insulation behind the access panel will
need to be cut away. Carefully cut the insulation with a knife or
blade on three sides so the insulation can be folded out of the
way during cleaning. Be cmeful not to damage components behind the insulation while cutting. Once cleaning is completed,
fold the insulation back into place and secure the access panel
in the original position.
If optional power exhaust is installed, as the outdoor-air
damper opens and closes, the power exhaust fans will be energized and deenergized.
FILTERS -- Clean or replace at stm-tof each heating and cooling season, or more often if operating conditions require. Refer
to Table 1 for type and size.
OUTDOOR-AIR INLET SCREENS -- Clean screens with
steam or hot water grada mild detergent. Do not use throwaway
filters in place of screens. See Table 1 for quantity and size.
If field-installed accessory CO2 sensors are connected to the
EconoMiSer IV control, a demand controlled ventilation strategy will begin to operate. As the CO2 level in the zone increases
above the CO2 set point, the minimum position of the &_mper
will be increased proportionally. As the CO2 level decreases
because of the increase in fresh aik the outdoo>air &tmper will
be proportionally closed.
For EconoMi$er
IV operation, there must be a thermostat
call for the fan (G). This will move the damper to its minimum
position.
Lubrication
COMPRESSORS -- Each compressor is chmged with the corlect mnount of oil at the factory. Conventiomd white oil (Zerol
150T or Sontex SA32) is used. White oil is compatible with 3GS
oil, and 3GS oil may be used if the addition ofoil is required. See
compressor nmneplate for origimd oil chmge. Oil mchmge
amount is shown in Table 1. When a compressor is exchanged in
the field it is possible that a major portion of the oil from the mplaced compressor may still be in the system. While this will not
affect the reliability of the replacement compmssol, the extra oil
will add rotor drag and increase power usage. To remove this excess oil, an access v_dvemay be added to the lower portion of the
suction line at the inlet of the compressol: The compressor
should then be mn for 10 minutes, shut down and the access
valve opened until no oil flows. This should be repeated twice to
make sure the proper oil level has been achieved.
FAN SHAFT BEARINGS -- Lubricate betuings at least eveU 6 months with suitable bearing grease. Typical lubricants
me given below:
When the EconoMi$er IV control is in the occupied mode
and a call for cooling exists (YI on the thermostat), the control
will first check for indoor fan operation. If the fan is not on,
then cooling will not be activated. If the fan is on, then the
control will open the EconoMi$er IV dmnper to the minimum
position.
Damper movement from full closed to full open (or vice
veLsa) will take between 11/2and 21/2 minutes.
If free cooling can be used as determined from the appropriate changeover command (switch, din bulb, enthalpy curve,
differential dry bulb, or differential enthalpy), then the control
will modulate the dampeLs open to maintain the mixed air temperature set point at 50 to 55 E
If there is a further demand for cooling (cooling second
stage -- Y2 is energized), then the control will bring on
compressor stage 1 to maintain the mixed-air temperature set
point. The EconoMiSer IV &unper will be open at maximum
position. EconoMiSer
IV operation is limited to a single
compressoE
HEATING, UNITS WITH ECONOMI$ER
IV -- When the
room temperature calls for heat, the heating controls am energized as described in the Heating, Units Without Economizer
section. The IFM is energized and the EconoMiSer IV damper
modulates to the minimum position. When the thermostat is
satisfied, the damper modulates closed.
Texaco
Mobil
MANUFACTURER
Sunoco
Texaco
]
Regal AFB-2*
Mobilplex EP No. 1
LUBRICANT
Prestige 42
Multifak 2
*Preferred lubricant because it contains rust and oxidation inhibitors.
CONDENSER
AND
EVAPORATOR-FAN
MOTOR
BEARINGSThe condenser and evaporator-fan
motors
have permanently
sealed bearings, so no field lubrication is
necessary.
Evaporator
Fan Service
and Replacement -- The
50HJ units feature a slide-out fan deck for easy servicing of the
indoor-fan motor, pulleys, belt, and bearings. To service components in this section, perform the following procedure:
SERVICE
1. Shut offunit
Before performing service or maintenance operations on
unit, turn off main power switch to unit. Electrical shock
could cause personal injury.
2.
3.
Open the fan section access panel.
Remove three no. 10 screws at front of slide-out fan deck.
Save screws. See Fig. 27.
4.
Disconnect the electrical plugs
slide-out fan deck (evaporator
mistor, and fan status switch,
&_maged if not disengaged.
Fan deck can now be slid
Cleaning -- Inspect unit interior at beginning of each heating and cooling season and as operating conditions require. Remove unit top panel and/or side panels for access to unit interioc
EVAPORATOR COIL -- Clean as required with commercial
coil cleanel:
power supply.
5.
and wires connected to the
fan plug, supply air therif installed). Wires may be
out to access
serviceable
components.
CONDENSER COIL--Clean
condenser coil annually and
as required by location and outdoo>air conditions. Inspect coil
monthly; clean as required.
CONDENSATE DRAIN -- Check and clean each year at the
start of the cooling season. In winter, keep diains and traps diN.
An access panel is located above the condensate connection to
allow easy clean out of the condensate pan. The first time the
DO NOT SLIDE FAN DECK OUT PAST THE STOP
BRACKET. [f further access is required, the fan deck must
be suppolled. Make sum plugs and wiring are not pinched
between fan housing and unit center post. Damage to unit
may result.
43
6. Toreplace
fandecktooperating
position,
slidefandeck
backintotheunit.Secure
withthethreeno.10screws
removed
inStep3.
7. Re-attach
electrical
plugs
andwires.
8. Close
fansection
access
door.
9.
Restore power to unit.
Evaporator
Fan
Performance
(Fig. 27 and 28)
-- Fan motor
for speed shown in Table 1.
MOTOR
- PULLEY
(HIDDEN)
FAN
PULLEY"
Adjustment
pulleys are factoq
set
- MOTOR
To change fan speeds:
1. Shut off unit power supply.
2. Ix)osen nuts on the 4 caniage bolts in file mounting base.
Using adjusting bolts and plate, slide motor and remove
belt.
3.
4.
5.
6.
7.
MOUNTING
-BASE
SLIDE-OUT
FAN DECK
[
Ix_osen movable-pulley
flange setsclew (see Fig. 28).
Screw movable flange toward fixed flange to increase
speed and away fiom fixed flange to decrease speed. Incleasing fan speed increases load on motol: Do not exceed maximum speed specified in Table 1.
Fig. 27 --
Evaporator-Fan
See Table 13 for air quantity limits.
Set movable flange at nearest keyway of pulley hub and
tighten setscrew. (See 321ble 1 for speed change for each
full turn of pulley flange.)
STRAIGHTEDGE
PARALLEL
WITH BELT
Replace and tighten belts (see Belt Tension Adjustment
section below).
Restore power to unit.
Motor
Adjustment
MUST
PULLEY
To align fan and motor pulleys:
1. Ix_osen fan pulley setscrews.
2.
3.
Slide fan pulley along fan shaft.
Make angular alignment
by
mounting plate.
4.
Restore power to unit.
Belt Tension
2.
3.
4.
5.
6.
loosening
motor
fi_m
PULLEY
Adjustment
1. Shut offpowerto
MOVABLE
FLANGES
MOTOR AND FAN
SHAFTS MUST BE
PARALLEL
-- Toadjust belt tension:
SETSCREWS_
unit.
Slide out fan deck to service position as shown in Evaporator Fan Service and Replacement section above.
Ix_osen fan motor bolts.
FIXED FLANGES
SINGLE-GROOVE
Move motor mounting plate to adjust to proper belt tension. See Table 21. Motor adjuster bolts may be used to
tighten belts. See Fig. 27.
Check for proper belt alignment. Adjust if necessary.
7.
Tighten motor mounting plate bolts to lock motor in
pint,per position.
Return fan deck back into operating position.
8.
Restore power to unit.
Table
50HJ
10
B,K
4.9
C,L
5.1
D,M
5.7
E,N
NA
F,P
4.9
G,Q
5.1
H,R
5.7
460
NA
4.9
5.1
5.7
NA
4.9
5.1
5.7
575
NA
3.9
5.2
5.7
NA
3.9
5.2
5.7
4.8
5.1
5.6
4.5
4.8
5.1
5.6
4.5
460
4.8
5.1
5.6
4.5
4.8
5.1
5.6
4.5
575
5.3
5.1
5.6
4.5
5.3
5.1
5.6
4.5
4.5
5.4
5.9
4.5
4.5
5.4
5.9
4.5
460
4.5
5.4
5.9
4.5
4.5
5.4
5.9
4.5
575
4.5
5.4
5.9
4.5
4.5
5.4
5.9
4.5
208/230
028
Adjustment
A,J
NA
208/230
024
Belt Tension
BELT TENSION
(Ib)
Unit Model Number Position
VOLTAGE
208/230
020
21 --
Fig. 28 -- Evaporator-Fan Alignment and
Adjustment
44
Condenser-Fan
Adjustment
(Fig. 29)
I.
2.
Shut off unit power supply.
Remove condenser-fan
assembly (grille, motor,
cover, and fan) and loosen fan hub setscrews.
3.
4.
Adjust fan height as shown in Fig. 29.
Tighten setscrews and replace condenser-fan
CHARGING CHART fALLCIRCUITS)
ALL OUTDOOR FANS MUST BE OPERATING
motor
assembly.
/
3,4!.
Fig. 29 -- Condenser-Fan
Adjustment
LIOUIO
Power Failure
-- Dampers have a spnng return. In event
of power failure, &Empel.s will return to fully closed position
until power is restored. Do not manually ol)e_z_te damper
PRESSURE [NTERIN6
TXV.
[psigl
Fig. 30 -- Cooling Charging
50HJ020 Units
Chart
--
lifO[OF.
Refrigerant Charge
-- Amount of refrigerant charge is
listed on unit nameplate and in Table 1. Refer to C;urier GFAC
II; Module 5; Charging, Recovery, Recycling, and Reclmnation
section for ch;uging methods and procedures. Unit panels must
be in place when unit is operating during charging procedure.
NOTE: Do not use recycled
contaminants.
refrigerant
as it may
CHARGING
IIIIIllllllllllllllllllllllllllllllllllll
IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII
IIIIIllllllllllllllllllllllllllllllllllll
IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII
IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII
contain
@_AGD
CHARGE
IF ABOVE
THECURVE
IllllllllIIlllllll
IIIIIIIIIIIIIIIIII
llllllIIIlllllllII
IllllllllIIlllllll
IlllllIIIIIlllllII
Illllllllllllllll_
IIIIIIIIIIIIIIIA_?I
IIIIIIIIIIIIA_IIIII
NO CHARGE -- Use standard evacuating techniques. After
evacuating system, weigh in the specified mnount of refrigerant (refer to Table 1).
LOW CHARGE
COOLING -- Using cooling charging chart
(see Fig. 30-32), add or remove refrigenmt until conditions of
the chart are met. An accurate pressure gage and temperaturesensing device is required. Charging is accomplished by ensuring the proper amount of liquid subcooling. Measure liquid line
pressure at the liquid line service valve using pressure gage.
Connect temperature sensing device to the liquid line ne;u the
liquid line service valve and insulate it so that outdoor ambient
temperature does not affect reading.
TO USE THE COOLING CHARGING
CHART -- Use the
above temperature and pressure readings, and find the intersection point on the cooling charging chart. If intersection point on
ch_ul is above line, add refrigerant. If intersection point on
chmt is below line, cmefully recover some of the charge. Recheck suction pressme as charge is adjusted.
NOTE: Indoor-air cfm must be within normal operating
of unit. All outdoor fans must be operating.
CHART FALL CSRCUST$)
ALL OUTDOORFANS MUST BE OPERATZNG
I I I I I I I I I l--F'l
IIIIIIIIII]_H-IIIII
llllllLg_i_lllllllll
lll]_rllllllllIIll
],H_]IIIIIIIIIIIIIII
llllIIIIIlllllIIII
llllllllllllllllII
llllllIIIlllllllII
llllIIllllllllIIll
I I I I I I
REMOVE CHARGE IF BELOW
THE CURVE
{III
N_{{IIIII{{ ,,,,,, ,,,,,,
II.M"IIIIIIIIIIIIII
.i/[llllililllllllil
IIIIIIIIIIIIIIIIII
IIIIII
IIIlil
IIIIII
IIIIll
Illill
IIIIll
444+FH_°E_°_GE_H
IIIlll
IIIIIIIIllllllllll
leo
IIIIII
l_e
LIOUID
2oo
PRESSURE
ENTERING
TXV,
IIIIll
aee
[psigl
Fig. 31 -- Cooling
Charging
50HJ024
Units
CHARGING
HJ024
zso
Chart
--
CHART FALL CIRCUITS)
ALLOUTDOOR
tANSMUSt OPrRATING
range
The TXV (thermostatic expansion valve) is set to maintain
between 10 and 15 degrees of superheat at the compressors.
The valves are factory set and should not requile re-adjustment.
Filter Drier
-- Replace
posed to atmosphere.
Protective
COMPRESSOR
whenever
refrigerant
system is ex-
Devices
PROTECTION
Overcurrent -- Each compressor has internal line break motor
protection.
Overtemperature
-- Each compressor has an internal protector
to protect it against excessively high dischmge gas temperatures.
2_o
LIOUID
Compressor Lockout -- If any of the safeties (high-pressure,
low-pressure, freeze protection thermostat, compressor internal
thermostat) trip, or if there is loss of power to the compressors,
the CLO (compressor lockout) will lock the compressors off.
To reset, manually move the thermostat setting.
PRESSURE
ENTERING
TXV,
[psig]
Fig. 32 -- Cooling
Charging
50HJ028
Units
45
Chart
--
EVAPORATOR
FANMOTORPROTECTION
-- A manual reset,calibrated
trip, magnetic
circuitbreakerprotects
against
overcurrent.
Donotbypass
connections
orincrease
the
sizeoffilebreaker
tocorrect
trouble. Determine file cause and
correct it before resetting the breaker.
CONDENSER-FAN
MOTOR
PROTECTION
condenser-fan
motor
is
internally
protected
overtemperature.
--
FREEZE PROTECTION
THERMOSTAT
(FPT) -- An FPT
is located on the top and bottom of the evaporator coil. It detects frost build-up and turns off the compressor, allowing the
coil to clear Once the frost has melted, file compressor can be
reenergized.
Each
against
Relief
Devices
-- All units have relief devices to protect
against &image from excessive pressures (i.e., fire). These
devices protect the high and low side.
Fuses m'e also located in the control box and feed power to
the condenser fan motors. Always replace blown fuses with the
correct size fuse as indicated on file unit fuse label.
Control Circuit, 24-V-
HIGH-PRESSURE
AND LOW-PRESSURE
SWITCHES -If either switch trips, or if the complessor overtempemture
switch activates, that refrigerant circuit will be automatically
locked out by the CLO. To reset, manually move file thermostat setting.
Replacement
Each control circuit is protected against overcurrent
by a 3.2 amp circuit breakel:
Breaker can be reset. If it trips, determine cause of trouble
before resetting. See Fig. 33-35 for unit wiring.
parts may
request.
Parts
be obtained
-- A complete list of replacement
from any Carrier distributor upon
LEGEND
Fig. 33 -Fig. 34 -.A
AHA
AUX
-=
=
.B
--
.C
--
C
CAP
CB
CCH
CLO
COMP
CR
ECB
FCS
FlOP
FPT
FU
GND
HACR
HERM
HPS
IA
IAQ
IFC
IFCB
IFM
=
=
------------------
Low Voltage
Power Schematic
Control
and Fig. 35 --
Circuit A
Adjustable Heat Anticipator
Auxiliary Contact
Circuit B
Circuit C
Compressor, Contactor
Capacitor
Circuit Breaker
Crankcase Heater
Compressor Lockout
Compressor
Compressor Relay
EconoMi$er Control Board
Fan Cycling Switch
Factory-Installed Option
Freeze Protection Thermostat
Fuse
Ground
Heating, Air Conditioning and Refrigeration
Hermetic
High-Pressure Switch
Indoor Air
Indoor Air Quality
Indoor-Fan Contactor
Indoor Fan Circuit Breaker
Indoor-Fan Motor
LPS
OA
OFC
OFM
PEC
PEM
QT
RAS
RAT
SAT
TB
TRAN
-----
Common
Fan
Thermostat Power
1st Stage of Heating
Component
m
m
m
m
m
m
m
m
m
m
m
m
©
Arrangement
Low-Pressure Switch
Outdoor Air
Outdoor-Fan Contactor
Outdoor-Fan Motor
Power Exhaust Contactor
Power Exhaust Motor
Quadruple Terminal
Return-Air Sensor
Return-Air Thermistor
Supply-Air Temperature
Terminal Block
Transformer
Terminal (Unmarked)
Terminal Block
Splice
Factory Wiring
Field Wiring
....
To Indicate FlOP or Accessory
To Indicate Common Potential Only,
Not To Represent Wiring
THERMOSTAT
C
G
R
Wl
Schematic,
MARKINGS
W2
X
Y1
Y2
-----
2nd Stage of Heating
Alarm Output
1st Stage of Cooling
2nd Stage of Cooling
NOTES:
1. Factory wiring is in accordance with the National Electrical Codes. Any field
modifications or additions must be in compliance with all applicable codes.
2. Use 75 ° C minimum wire for field power supply. Use copper wires for all units.
3. All circuit breakers "Must Trip Amps" are equal to or less than 156% RLA
(rated load amps).
4. Compressor and fan motors are thermally protected. Three-phase motors
protected against primary single phase conditions.
5. The CLO locks out the compressor to prevent short cycling on compressor
overload and safety devices. Before replacing CLO, check these devices.
46
.........
RED
\
LS _
,C
AI
_?_AN I
c
>C _1
>IFC
>CLO _1
>CLO_I
>¢R1
x
CLO BI
is _I$CO_NECI[D_[N ACC?
OA [NI_ALPY IS I_STALL[D
Fig. 33 -- Low Voltage
47
Control
Schematic
\
\
o,
W
I:::::_:::_:o:o:o:o:o:o:o:o:o:o:o_:o:,:,_::;::::::o:o>:o:o:o:o:o:o:o:o_::::::
t
E
_m
o
E
o
I
€_
_
°°
LJ
49
TROUBLESHOOTING
Unit Troubleshooting
troubleshooting
--
Refer to Tables 22 and 23 for
details.
Table 22 -- Cooling
PROBLEM
Compressor
Service Analysis
CAUSE
and
REMEDY
Power failure.
Condenser Fan
Will Not Start.
Call power company.
Fuse blown or circuit breaker tripped.
Defective thermostat,
relay.
Insufficient
Replace fuse or reset circuit breaker.
contactor, transformer,
or control
line voltage.
Determine cause and correct.
Incorrect or faulty wiring.
Compressor
Thermostat setting too high.
Faulty wiring or loose connections
Will Not
Start but Condenser
Runs.
Fan
Compressor
load open.
Replace component.
Check wiring diagram and rewire correctly.
in compressor
circuit.
motor burned out, seized, or internal over-
Lower thermostat setting below room temperature.
Check wiring and repair or replace.
Determine cause. Replace compressor.
Defective overload.
Determine cause and replace.
Compressor
Determine cause for safety trip and reset lockout.
locked out
One leg of 3-phase power dead.
Replace fuse or reset circuit breaker.
Determine cause.
Compressor
Cycles
(other than normally
Refrigerant
Recover refrigerant,
to nameplate.
satisfying
Defective compressor.
Replace and determine cause.
Insufficient line voltage.
Blocked condenser.
Determine cause and correct.
Determine cause and correct.
Defective overload.
Determine cause and replace.
thermostat).
overcharge or undercharge.
Defective thermostat.
Faulty condenser-fan
Compressor
Operates
Continuously.
Replace thermostat.
motor.
Replace.
Restriction in refrigerant system.
Locate restriction and remove.
Dirty air filter.
Unit undersized for load.
Replace filter.
Decrease load or increase unit size.
Thermostat
Reset thermostat.
set too low.
Low refrigerant charge.
Excessive
Head
Pressure.
Locate leak, repair, and recharge.
Air in system.
Recover refrigerant,
Condenser coil dirty or restricted.
Dirty air filter.
Clean coil or remove restriction.
Replace filter.
Dirty condenser
Clean coil.
Refrigerant
coil.
overcharged.
Excessive
Too Low.
Suction
Pressure.
Air in system.
1. Check TXV bulb mounting and secure tightly to
suction line.
2. Replace TXV if stuck open or closed.
Recover refrigerant, evacuate system, and recharge.
Condenser air restricted or air short-cycling.
Determine cause and correct.
Low refrigerant charge.
Restriction in liquid tube.
Check for leaks, repair, and recharge.
Remove restriction.
High heat load.
Check for source and eliminate.
Faulty TXM
1. Check TXV bulb mounting and secure tightly to
suction line.
2. Replace TXV if stuck open or closed.
Refrigerant
Suction
Pressure Too
Low.
overcharged.
Recover excess refrigerant.
Dirty air filter.
Replace filter.
Low refrigerant charge.
Check for leaks, repair, and recharge.
Metering device or low side restricted.
Faulty TXM
Remove source of restriction.
1. Check TXV bulb mounting and secure tightly to
suction line.
2. Replace TXV if stuck open or closed.
Insufficient
Increase air quantity. Check filter and replace if
necessary.
evaporator airflow.
Temperature too low in conditioned
Field-installed
area.
Reset thermostat.
filter drier restricted.
Replace.
LEGEND
TXV -- Thermostatic
evacuate system, and recharge.
Recover excess refrigerant.
Faulty TXV.
Head Pressure
evacuate system, and recharge
Expansion Valve
5O
Table 23 -- Heating Service Analysis
PROBLEM
CAUSE
No Heat.
REMEDY
Power failure.
Call power company.
Fuse blown or circuit breaker tripped.
CB1, CB2, CB3.
Replace fuse or reset circuit breaker.
Thermostat
Check thermostat.
not calling for heating.
No 24 vac at primary contactor.
Check transformer
No power (high voltage) to L2 of
primary contactor.
Bad electrical elements.
Check safety switches, one shot backup,
and auto limit.
EconoMiSer
IV Troubleshooting
for EconoMi$er
IV logic.
-- See Table 24
3.
power at TR and TRI, All LEDs
fan contacts should be open,
2,
Disconnect
device
3,
Jumper
4,
Disconnect
wires
across T and TI.
5.
Jumper
TR to 1.
6.
Jumper
TR to N.
7.
If connected,
remove
Connect
1.2 kilo-ohm
terminals
So and +.
8.
Put 620-ohm
9.
Set minimum
potentiometers
should
be
4.
5,6 kilo-ohm
sensor
fiom terminals
So find +.
4074EJM
checkout
resistor across
6.
across
terminals
SR and +.
position,
DCV
set point,
fully CCW (counterclockwise).
10.
Set DCV
(clockwise).
maximum
11.
Set enthalpy
potentiometer
12.
Apply
(24 vac) to termimds
power
DIFFERENTIAL
resistor
5.
resistor
position
and
exhaust
lully
Make
sine
EconoMiSer
IV
check
prepfuation
differential
procedure
Place
620-ohm
resistor
3.
Place
1.2 kilo-ohm
resistor
Cool LED should be lit.
4.
Remove
620-ohm
Cool LED should
5.
Return
EconoMi$er
after completing
across
resistor
turn off.
IV
So and +.
across
SR find +. The
settings
So
and
and
wiring
+. The
to
Turn the DCV Maximum
point. The actuator should
open.
Turn the DCV Maximum
CCW. The actuator should
Free
Position potentiometer to middrive to between 20 and 80%
Position potentiometer
drive fully closed.
to fully
5.
Turn the Minimum Position potentiometer to midpoint.
The actuator should drive to between 20 find 80% open.
6.
Turn the Minimum Position Potentiometer
actuator should drive fully open.
7.
Remove the jumper fiom TR and N. The actuator
c_kivefully closed.
normal
51
has
3.
Free
troubleshooting.
procedure
Connect a 9-v battery to AQ (positive node) and AQI
(negative node). The DCV LED should turn on. The
actuator should drive to between 90 and 95% open.
4.
across
IV preparation
2.
has
been perfomled.
2.
Turn the DCV and Exhaust potentiometers
CCW until
the Exhaust LED turns on. The exhaust contacts will
close 30 to 120 seconds after the Exhaust LED turns on.
1. Make sure EconoMiSer
been performed.
TR and TRI.
enthalpy:
1.
Turn the Exhaust potentiometer
CW until the Exhaust
LED turns off. The LED should turn off when the
potentiometer is approximately 90%. The actuator should
remain in position.
Turn the DCV set point potentiometer CW until the DCV
LED turns off. The DCV LED should turn off when the
potentiometer is approximately 9 v. The actuator should
c_kivefully closed.
Return EconoMiSer
IV settings and wiring to normal
after completing troubleshooting.
DCV MINIMUM AND MAXIMUM POSITION -- To check
the DCV minimum and maximum position:
CW
to D.
To
to D (fully CW). The Free
7.
potentiometer
ENTHALPY--
The
1. Make sure EconoMiSer
IV preparation procedure has
been performed.
2. Ensure terminals AQ and AQI are open. The LED for
both DCV and Exhaust should be off. The actuator
should be fully closed.
3. Connect a 9-v battery to AQ (positive node) and AQI
(negative node). The LED for both DCV and Exhaust
should turn on. The actuator should drive to between 90
find 95% open.
at P and Pl,
Place
Set the enthalpy potentiometer
Cool LED should turn off.
has
Return EconoMi$er
IV settings and wiring to normal
after completing troubleshooting.
DCV (Demand
Controlled
Ventilation)
AND POWER
EXHAUST -- To check DCV and Power Exhaust:
P to PI.
at T and TI,
-- To check single enthalpy:
4.
of all poten-
Disconnect
off, Exhaust
ENTHALPY
1. Make sure EconoMi$er
IV preparation procedure
been performed.
2. Set the enthfdpy potentiometer
to A (fully CCW).
Free Cool LED should be lit.
NOTE: This procedure lequires a 9-v battery. 1.2 kilo-ohln
resistor, and a 5.6 kilo-ohm resistor which are not supplied
with the EconoMiSer IV.
1,
With power off, remove high voltage wires and
check resistance of heater. Replace if open.
SINGLE
ECONOMISER
IV PREPARATION
-- This procedure
is
used to prepare the EconoMi$er
IV for troubleshooting.
No
troubleshooting or testing is done by pellorming the following
procedure.
A fiJnctional view of the EconoMi$er
IV is shown in
Fig. 36. Typicfd settings, sensor ranges, and jumper positions
are also shown. An EconoMi$er
IV simulator program is
available fiom Canier to help with EconoMiSer IV training
and troubleshooting.
tiometers
before Bestarting
IMPORTANT:
sure totroubleshooting,
record the positions
and circuit breaker.
fully CW. The
should
8. Return
EconoMiSer
IV settings
andwiringto normal
al_er
completing
troubleshooting.
SUPPLY-AIR
INPUT-- Tocheck
supply-air
input:
1. MakesureEconoMiSer
IV preparation
procedure
has
beenperformed.
2. SettheEnthalpy
potentiometer
toA.TheFreeCoolLED
turnson.Theactuator
should
&iveto between
20and
80%open.
3. Remove
the5.6kilo-ohm
resistor
andjumperT toTI.
Theactuator
should
drivefullyopen.
4. Remove
thejumper
across
T andTI.Theactuator
should
drivefullyclosed.
5. Return
EconoMiSer
IV settings
andwiringto normal
al_er
completing
troubleshooting.
ECONOM[$ER
IV TROUBLESHOOTING
COMPLETION-- Thisprocedure
isused
toreturntheEconoMiSer
IV
tooperation.
Notroubleshooting
ortesting
isdonebyperformingthefollowing
procedure.
1. Disconnect
power
atTRandTRI.
2. Setenthalpy
potentiometer
toprevious
setting.
3. SetDCVmaximum
position
potentiometer
toprevious
setting.
4. Setminimumposition,DCVsetpoint,andexhaust
potentiometers
toprevious
settings.
5. Remove
620-ohm
resistor
fromterminals
SRand+.
6. Remove
1.2kilo-ohm
checkout
resistor
fromterminals
Soand+.If used,
reconnect
sensor
fromterminals
Soand
+.
7. Remove
jumperfromTRtoN.
8. Remove
jumperfromTRto1.
9. Remove
5.6kilo-ohm
resistor
fromTandTI.Reconnect
wiresatTandTI.
10. Remove
jumperfromPtoPI.Reconnect
device
atPand
PI.
11.Applypower(24vac)totermimds
TRandTRI.
Table 24 -- EconoMi$er IV Input/Output
Logic
INPUTS
Demand Control
Ventilation (DCV)
Below set
(DCV LED Off)
Above set
(DCV LED On)
OUTPUTS
Enthalpy*
Outdoor
N Terminalt
Compressor
Return
Y1
Y2
Stage
1
High
(Free Cooling LED Off)
Low
On
On
On
Off
On
On
On
Off
Off
Off
Off
Off
Low
(Free Cooling LED On)
High
On
On
On
Off
On
Off
Off
Off
High
(Free Cooling LED Off)
Low
On
On
On
Off
Off
Low
(Free Cooling LED On)
High
On
On
Off
*For single enthalpy control, the module compares
enthalpy to the ABCD set point.
1-Power at N terminal determines Occupied/Unoccupied
24 vac (Occupied), no power (Unoccupied).
**Modulation is based on the supply-air sensor signal.
1-1-Modulation is based on the DCV signal.
Stage
2
Occupied
Unoccupied
Dam )er
Minimum position
Closed
Off
Off
Modulating** (between min.
position and full-open)
Modulating** (between
closed and full-open)
Off
Off
Minimum position
Closed
On
On
On
Off
Modulating1-1- (between min.
position and DCV maximum)
Off
Off
Off
Modulating1-1- (between
closed and DCV
maximum)
On
Off
On
Off
Off
Off
Modulating***
Modulating1-1-1-
Off
Off
Off
outdoor
***Modulation is based on the greater of DCV and supply-air sensor signals, between minimum position and either maximum
position (DCV) or fully open (supply-air signal).
I-I-I-Modulation is based on the greater of DCV and supply-air sensor signals, between closed and either maximum position (DCV)
or fully open (supply-air signal).
setting:
52
Fig. 36 -- EconoMiSer IV Functional View
53
SERVICE
Packaged
Service
discussed
A large
Training
in this manual,
selection
materials.
Classroom
are an excellent
way
to increase
• Maintenance
• Installation
• Operating
of product,
Overview
theory,
video and/or
Training
and skills
slides,
which
CALL
] Packaged
includes
FOR
Service
programs
plus companion
increased confidence
that really pays dividends
and schedules
are in our catalog.
[
your
knowledge
of the
equipment
including:
• Unit Familiarization
All include
Service
programs
TRAINING
"hands-on"
are available,
Training
using
popular
video-based
formats
and
book.
experience
in faster troubleshooting
FREE
Sequence
CATALOG
[
with the products
and fewer
in our labs can mean
callbacks.
Course
descriptions
1-800-644-5544
] Classroom
Service
Training
Copyright 2005 Carrier Corporation
Manufacturer reserves the right to discontinue, or change at any time, specifications
Catalog
No. 04-53500013-01
Printed in U.S.A.
or designs without notice and without incurring obligations.
Form 50HJ-30SI
Pg 54
10-05
Replaces:
50HJ-26SI
START-UP
MODEL
CHECKLIST
NO.:
SERIAL
DATE:
NO.:
TECHNICIAN:
PRE-START-UP:
[]
VERIFY
THAT ALL PACKING
[]
VERIFY
INSTALLATION
MATERIALS
[]
VERIFY
THAT CONDENSATE
[]
VERIFY
THAT ALL ELECTRICAL
[]
CHECK
THAT RETURN-AIR
[]
CHECK
THAT OUTDOOR
[]
VERIFY
THAT UNIT IS LEVEL
[]
CHECK FAN WHEEL
IS TIGHT
[]
VERIFY
THAT FAN SHEAVES
[]
VERIFY
THAT SCROLL
[]
VERIFY
INSTALLATION
[]
VERIFY
THAT CRANKCASE
OF OUTDOOR
HAVE BEEN REMOVED
CONNECTION
IS INSTALLED
CONNECTIONS
FILTERS
FROM UNIT
AIR HOOD
ARE CLEAN
AIR INLET SCREENS
AND PROPELLER
PER INSTRUCTIONS
AND TERMINALS
ARE TIGHT
AND IN PLACE
ARE IN PLACE
FOR LOCATION
IN HOUSING/ORIFICE,
AND VERIFY
SETSCREW
LU
ARE ALIGNED
COMPRESSORS
AND BELTS ARE PROPERLY
ARE ROTATING
TENSIONED
IN THE CORRECT
2:
C_
DIRECTION
LU
I--
OF THERMOSTAT/SPACE
SENSOR
rm
HEATERS
HAVE BEEN ENERGIZED
FOR AT LEAST
24 HOURS
Z
o,
II. START-UP
<
D
o
ELECTRICAL
SUPPLY
VOLTAGE
COMPRESSOR
L 1-L2
AMPS
L2-L3
L3-L 1
COMPRESSOR
AI
LI
L2
L3
COMPRESSOR
B1
LI
L2
L3
CI (020, 024 ONLY)
LI
L2
L3
LI
L2
L3
-- COMPRESSOR
SUPPLY FAN AMPS
ELECTRIC
HEAT AMPS (IF EQUIPPED)
TEMPERATURES
OUTDOOR-AIR
RETURN-AIR
TEMPERATURE
F DB (Dry Bulb)
FDB
TEMPERATURE
COOLING
SUPPLY
AIR
ELECTRIC
HEAT
SUPPLY
AIR (IF EQUIPPED)
U3
F
WB (Wet Bulb)
F
F
rm
U3
PRESSURES
REFRIGERANT SUCTION
z
Z
o
CIRCUIT A
CIRCUIT B
PSIG
PSIG
CIRCUIT C
CIRCUIT A
CIRCUIT B
PSIG (020, 024 ONLY)
PSIG
PSIG
CIRCUIT C
PSIG (020, 024 ONLY)
<
o
REFRIGERANT DISCHARGE
[]
VERIFY
REFRIGERANT
CHARGE
USING CHARGING
CHARTS
ON PAGE 45.
GENERAL
[]
[]
ECONOMIZER MINIMUM VENT AND CHANGEOVER SETTINGS TO JOB REQUIREMENTS
VERIFY INSTALLATION OF ALL OH'IONS AND ACCESSORIES
Copyright 2005 Carrier Corporation
Manufacturerreserves the rightto discontinue,or changeat any time, specificationsor designswithout noticeand without incurringobligations.
Book 111
Catalog No. 04-53500013-01
Printed in U,S.A.
Form 50HJ-30SI
Pg CL-1
10-05
Replaces: 50HJ-26SI
Tab
F
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