Installation and servicing air-conditioning equipment can be
hazardous due to system pressure and electrical components. Only trained and qualified service personnel should
install, repair, or servic e air-conditioning equipment.
Untrained personnel can perform basic maintenance functions of cleaning coils and filters and replacing filters. All
other operations sh o uld be perfor me d by trai ne d se rvi ce 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.
WARNING: Before performing service or maintenance operations on unit, turn off main power switch
to unit and install lockout tag. Electrical shock could
cause personal injury.
CAUTION: Ensure voltage listed on unit data
plate agrees with electrical supply provided for the
unit.
INSTALLATION
Unit is shipped in the vertical discharge configuration. To
convert to horizontal configu rat ion, remov e scre ws from horizontal duct opening covers and remove covers. Using the
same screws, install covers on duct openings in basepan of
unit with the insulation-side down. Seals around duct openings must be tight. See Fig. 1.
Confirm before installation of unit that voltage, amperage
and circuit protection requirements listed on unit data plate
agree with power supply provided.
I. STEP 1 — PROVIDE UNIT SUPPORT
A. Roof Curb
Assemble and install access ory roof curb in accorda nce with
instructions shipped with curb. See Fig. 2. Install insulation,
cant strips, roofi ng fe lt, and counter flashing as shown. Duct-work must be attached to curb, not to unit. If electric control
power is to be routed through the basepan, attach the accessory thru-the-bottom service connec tions to the roof curb in
accordance with the accessory installa tion instructions. Connection must be installed before unit is set on roof curb.
IMPORTANT: The gasketing of the unit to the roof curb is
critical for a watertight seal. Install gasket supplied with the
roof curb as shown in Fig. 2. Improperly applied gasket can
also result in air leaks and poor unit performance.
Curb should be level. This is necessar y for unit drain to function properly. Unit leveling tolerances are shown in Fig. 3.
Refer to Accessory Roof Curb Installation Instructions for
additional information as required.
B. Alternate Unit Support
When the curb or adapter cannot be used, support unit with
sleeper rails using unit curb or adapter support area. If
sleepers cannot be used, support long sides of unit with a
minimum of three 4-in. x 4-in. pads, 2 at the unit’s corners
and one at the center of gravity. If more than 3 are used,
equally space out pads along unit side.
C. Slab Mount (Horizontal Units Only)
Provide a level concrete slab that ex te nds a m ini mum o f 6 i n.
beyond unit cabinet. Install a 6-in. gravel apron in front of
outdoor-coil air inlet to prevent grass and foliage from
obstructing airflow.
NOTE: Horizontal units may be installed on a roof curb if
required.
II. STEP 2 — FIELD FABRICATE DUCTWORK
On vertical discharge un its, secure all ducts to ro of c urb and
building structure. Do not connect ductwork to unit. For horizontal applications, field-supplied isolation flanges should b e
attached to horizontal discharge openi ngs and all ductwork
attached to the flanges. Insulate and weatherproof all e xternal ductwork, joints, and roof openings with counter flashing
and mastic in accordance with applicable codes.
Fig. 1 — Horizontal Conversion Panels
Ducts passing through a n unc ondit i one d spa ce must be insulated and covered with a vapor barrier.
If plenum return is used on a vertical unit, the return should
be ducted through the roo f deck to comply with applicable
fire codes.
If electrical connections are to be routed thro ugh the bottom of
the unit, atta ch ac cess ory th ru-t he- bottom s ervi ce con nect ions
to the basepan in accordance with installation instructions.
A minimum clearance is not required around ductwork. Cabinet return-air static pressure (a negative condition) should
not exceed 0.30 in. wg with economizer or 0.45 in. wg
without economizer.
III. STEP 3 — INSTALL EXTERNAL TRAP FOR
CONDENSATE DRAIN
The unit’s
3
/4-in. condensate drain connections are located on
the bottom and side of the unit. Unit discharge connections
do not determine the use of drain connections; either
drain connection can be used with vertical or horizontal
applications.
When using the standard side drain connection, ensure the
plug in the alternate bottom connection (in center of pan) is
tight before installing the unit.
To use the bottom drain connection for a roof curb installation, relocate the factory-installed plug from the bottom connection to the side connection. See Fig. 4. The piping for the
condensate drain and external trap can be completed after
the unit is in place.
All units must have an external trap for condensate drainage. Install a trap at least 4 in. deep and protect against
freeze-up. If a dra in line is installe d downstream from the
external trap, pitch the line away from the unit at 1 in. per
10 ft of run. Do not use a pipe size smaller than the unit
connection (
3
/4-in.). See Fig. 5.
The center drain plug looks lik e a star conne ctio n, however it
can be removed with a
1
/2 in. socket drive extensio n.
IV. STEP 4 — RIG AND PLACE UNIT
Inspect unit for transportation damage. File any claim with
transportation agency. Keep unit upright and do not drop.
Spreader bars are not required if top crating is left on unit.
Rollers may be used to move unit across a roof. Level by
using unit frame as a reference. See Tables 1A and 1B and
Fig. 6 for additional inf ormat ion. Op era ting we ight is s hown
in Tables 1A and 1B and Fig. 6.
Lifting holes are provided in base rails as shown in Fig. 6
and 7A and 7B. Refer to rigging instructions on unit.
CAUTION: All panels m ust be in place when rigging and lifting. Unit is not designed for handling by a
fork truck. Damage to unit may result.
A. Positioning
Maintain clearance around and above unit to provide proper
airflow and service access. See Fig. 7A and 7B.
Position unit on roof curb so that the following clearances are
maintained:
1
/4-in. clearance between roof curb and base
rails on duct end, front and back of unit; 35/16-in. clearance
between roof curb and condenser fan end of un it (see Fig. 2,
sections A-A and C-C).
Do not install unit in an indoor l ocation. Do not locate unit
air inlet near exhaust vents or other sources o f c ontam ina t ed
air.
Although unit is weatherproof, guard against water from
higher level runoff and overhangs.
After unit is in position, remove shipping materials and rigging skid.
8. Connector packages CRBTMPWR001A01
and 2A01 are for thru-the-curb gas type.
Packages CRBTMPWR003A01 and 4A01
are for the thru-the-bottom type gas
connections.
Fig. 2 — Roof Curb Details
—3—
MAXIMUM ALLOWABLE
DIFFERENCE (in.)
A-BB-CA-C
0.51.01.0
Fig. 3 — Unit Leveling Tolerance
NOTE:
Trap should be deep enough to offset maximum unit static differ-
ence. A 4-in. trap is recommended.
Fig. 5 — Condensate Drain Piping Details
DRAIN OUTLET
NOTE: Drain plug is shown in factory-installed position.
DRAIN PLUGHORIZONTAL
Fig. 4 — Condensate Drain Connection (Side View)
NOTES:
1. Dimension in ( ) is in millimeters.
2. Hook rigging shackles through holes in base rail, as shown in detail
‘‘A.’’ Holes in base rails are centered around the unit center of gravity. Use wooden top skid when rigging to prevent rigging straps
from damaging unit.
3. Unit weights do not include economizer. See Tables 1A and 1B for
unit weight of economizer.
CAUTION: All panels must be in place when rigging. Unit
is not designed for handling by a fork truck. Damage to unit may
result.
OUTDOOR-AIR INLET SCREENSCleanable. Screen size and quantity varies by option selected.
RETURN-AIR FILTERSThrowaway
Quantity...Size (in.)4...16 x 20 x 24...16 x 20 x 24...20 x 20 x 24...20 x 20 x 2
LEGEND
Al— Aluminum
Bhp — Brake Horsepower
Cu — Copper
1
1
/4...1100
5
/
5
/
7
/
/
2
8
8
8
*Evaporator coil fin material/condenser coil fin material. Contact your local Bryant repre-
sentative for details about coated fins.
†Weight of 14-in. roof curb.
81/
1
/4...1100
5
/
—
7
/
2
8
8
10121/
1
/4...1100
5
/
8
7
/
8
7
/
8
1
/4...1100
7
/
7
/
—
2
8
8
NOTE: High-static motor not available on size 150 and 151 units.
—8—
V. STEP 5 — MAKE ELECTRICAL CONNECTIONS
WARNING: Unit cabinet must have an uninter-
rupted, unbroken electrical ground to minimize the
possibility of personal injury if an electrical fault
should occur. This ground may consist of elec tric al wire
connected to unit ground lug in control compartment,
or conduit approved for electrical ground when
installed in accordance with NEC (Nati onal Electrical
Code), ANSI/NFPA (American National Standards
Institute/National Fire 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.
A. Field Power Supply
All units except 208/230-v units are factory wired for the
voltage shown on the na meplate. If the 208/230-v un it is to
be connected to a 208-v power supply, the transformer must
be rewired by moving the black wire from the 230-v
1
/4-in.
male spade terminal on the transformer and connecting it to
the 200-v
1
/4-in. male spade terminal on the transformer.
Refer to unit label diagram for additional information . Pigtails are provided for field wire connecti ons.
When installing units, provide a disconnect per NEC. Use
copper conductors only when splice connectors are used.
NOTE: When accessory thru-the-bottom connections are
used, refer to the accessory installation instructions for
information on power wiring. Refer to Fig. 7A and 7B for
drilling locations.
All field wiring must comply with NEC and local requirements. In Canada, electr ical connections must be in accordance with CSA (Canadian Standards Association) C22.1
Canadian Electrical Code Part One.
Install field wiring as follows (see Fig. 8-10):
1. Instal l conduit th rough side p anel opening s between
disconnect and single point box (see Fig. 9 and 10).
2. Install powe r w ire s to t erm ina l conn ect ions as sho wn
in Fig. 8.
Voltage to compressor terminals during operation must be
within voltage range indicated on unit nameplate (see
Tables 2A-2D). On 3-phase units, voltages between phases
must be balanced within 2% and the current within 10%.
Use the formula shown in the legend for Tables 2A and 2B,
Note 2 to determine the percentage of voltage imbalance.
Operation on improper line voltage or excessive phase imbalance constitutes abuse and may cause damage to electrical
components. (Such operation would invalidate any applicable Bryant warranty.)
B. Field Control Wiring
Install a Bryant-approved accessory thermostat assembly
according to installation instructions included with the
accessory. Locate thermostat assembly on a solid wall in the
conditioned space to sense average temperature in accordance with thermostat installation instructions.
Route thermostat ca ble or equivalent si ngle leads of col ored
wire from subbase terminals to low-voltage connections on
unit (shown in Fig. 11) as described in Steps 1-5 below.
NOTE: For wire runs up to 50 ft, 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 ft, use no. 14 AWG insulated wire (35 C minimum). All
wire larger than no. 18 AWG cannot be directly c onn ected to
the thermost at and wi ll requi re a junct ion box and splic e at
the thermostat.
1. If unit is mounte d on roof curb and accessory thruthe-bottom connection is used, route wire through
connector provided in accessory kit through the unit
basepan.
2. Pass control wires thro ugh the hole prov ided on unit
(see connection D, Connection Sizes Table, Fig. 7A
and 7B).
3. Feed wire through the raceway built into the corner
post to the 24-v barrier located on the left side of the
control box. See Fig. 12. The raceway provides the
UL-required (Underwriters’ Laboratories) clearance
between the high-and low-voltage wiring.
4. Connect thermos tat wires to screw term inals of lowvoltage terminal board.
5. If unit is to be equipped with electric resistance heat,
ensure thermostat on a call for heat “W” energizes
“G” output. This allows fan operation on a call for
heat.
575-3-60
208/230-3-60
(090-121),
460-3-60
208/230-3-60
(150,151)
C—ContactorTerminal Block
IFC— Indoor (Evaporator)
NEC— National Electrical CodeField Wiring
TB— Terminal BlockFactory Wiring
Fan Contactor
LEGEND
ConnectionCOMP(S)— Compressor(s)
Splice Connection
Fig. 8 — Power Wiring Connections
—9—
558F
UNIT
SIZE
090
102
NOMINAL
V-P h- Hz
208/230-3-60
460-3-60
575-3-60
208/230-3-60
460-3-60
575-3-60
Table 2A — Electrical Data (Units Without Convenience Outlet) (558F090, 102, 120, 150)
Table 2A — Electrical Data (Units Without Convenience Outlet) (558F090, 102, 120, 150) (cont)
558F
UNIT
SIZE
120
NOMINAL
V-P h- Hz
208/230-3-60
460-3-60
575-3-60
VO LTAGE
RANGE
IFM
TYPE
MinMaxRLALRAQty Hp FLA
Std
18725415.8130.02
Alt7.5
High15.0
Std
Alt
4145087.964.02
High
Std
Alt3.4
5186326.652.02
High7.4
LEGEND
FLA— Full Load Amps
HACR — Heating, Air Conditioning and Refrigeration
IFM— Indoor (Evaporator) Fan Motor
LRA — Locked Rotor Amps
MCA — Minimum Circuit Amps
MOCP — Maximum Overcurrent Protection
NEC — National Electrical Code
OFM — Outdoor (Condenser) Fan Motor
RLA — Rated Load Amps
*Used to determine minimum disconnect per NEC.
†Fuse or HACR circuit breaker per NEC.
**Fuse only.
††Compres sor no. 1 is shown in table.
208/230-3-60: Compressor no. 2 RLA is 14.1 amps and LRA is 105 amps.
460-3-60: Compressor no. 2 RLA is 7.1 amps and LRA is 55 amps.
575-3-60: Compressor no. 2 RLA is 6.4 amps and LRA is 40 amps.
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%.
the following formula to determine the percent of voltage imbalance.
% Voltage Imbalance
= 100 x
Determine maximum deviation from average voltage.
(AB) 457 – 452 = 5 v
(BC) 464 – 457 = 7 v
(AC) 457 – 455 = 2 v
Maximum deviation is 7 v.
Determine percent of voltage imbalance.
% Voltage Imbalance = 100 x
This amount of phase imbalance is satisfactory as it is below the maximum allowable 2%.
max voltage deviation from average voltage
average voltage
Example: Supply voltage is 460-3-60.
AB = 452 v
BC = 464 v
AC = 455 v
Average Voltage =
= 1.53%
7
457
452 + 464 + 455
1371
=
= 457
3
COMPRESSOR
3
(ea)
OFM
(ea)
1
/41.4
1
/40.7
1
/40.7
Use
ELECTRIC
IFM
FLA
5.8
2.6
3.4
7.4
2.6
IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your local electric
utility company immediately.
3. For units with power exhaust: If a single power source is to be used, size wire to include
4. Determine heater capacity using multiplication factors table below:
HEAT
Nominal
kW
——43.1/ 43.150/ 5045/ 45
7.8/10.421.7/ 25.043.1/ 43.150/ 5045/ 45
12.0/16.033.4/ 38.548.9/ 55.460/ 6045/ 51
24.0/32.066.7/ 77.090.6/103.5100/110**83/ 95
31.8/42.488.4/102.0117.7/134.8125/150**108/124
37.6/50.0104.2/120.3137.5/127.5150/150**
——44.8/ 44.850/ 5047/ 47
7.8/10.421.7/ 25.044.8/ 44.850/ 5047/ 47
12.0/16.033.4/ 38.551.1/ 57.560/ 6047/ 53
24.0/32.066.7/ 77.092.8/105.6100/110**85/ 97
31.8/42.488.4/102.0119.9/136.9125/150**110/126
37.6/50.0104.2/120.3139.7/129.7150/150**128/147
——52.3/ 52.360/ 6056/ 56
7.8/10.421.7/ 25.052.3/ 52.360/ 6056/ 56
12.0/16.033.4/ 38.560.4/ 66.960/ 80**56/ 62
24.0/32.066.7/ 77.0102.1/115.0110/125**94/106
31.8/42.488.4/102.0129.2/146.3150/150**119/135
37.6/50.0104.2/120.3149.0/139.0150/175**137/156
——21.02522
16.519.828.13026
27.833.445.05041
33.039.752.96049
41.750.265.970**61
50.060.163.470**72
——21.82523
16.519.829.13027
27.833.446.05042
33.039.753.96050
41.750.266.970**62
50.060.164.470**73
——25.83027
16.519.834.13531
27.833.451.06047
33.039.758.96054
41.750.271.980**66
50.060.169.480**78
——17.92019
17.017.123.92522
34.034.145.35042
51.051.253.86061
——18.52519
17.017.124.72523
34.034.146.15042
51.051.254.66062
——21.72523
17.017.128.73526
34.034.150.16046
51.051.258.670**66
power exhaust MCA and MOCP. Check MCA and MOCP when power exhaust is powered
through the unit (must be in accordance with NEC and/or local codes). Determine the
new MCA including the power exhaust using the following formula:
MCA New = MCA unit only + MCA of Power Exhaust
For example, using a 558FPX091000 unit with MCA = 40.1 and MOCP = 45, with
CRPWREXH030A01 power exhaust.
MCA New = 40.1 amps + 1.6 amps = 41.7 amps
If the new MCA does not exceed the published MOCP, then MOCP would not change.
The MOCP in this example is 45 amps, the MCA New is below 45, therefore the MOCP is
acceptable. If “MCA New” is larger than the published MOCP, raise the MOCP to the next
larger size. For separate power, the MOCP for the power exhaust will be 15 amps per
NEC.
NOTE: The following equation converts kW of heat energy to Btuh: kW x 3.412 = Btuh.
EXAMPLE: 32.0 kW (at 240 v) heater on 208 v
FLAMCAMOCP†FLALRA
PAR T N O.
200 208 230 240 380 440 460 480 550 575 600
= 32.0 (.751 mult factor)
= 24.0 kW capacity at 208 v
POWER
SUPPLY
MCA
(230 v)
MCA
(460 v)
ACTUAL HEATER VOLTAGE
MCA
(575 v)
DISCONNECT
SIZE*
127/145
MOCP
(for separate
power source)
307/307
326/326
374/374
152
191
185
107
139
134
—11—
Table 2A — Electrical Data (Units Without Convenience Outlet) (558F090, 102, 120, 150) (cont)
558F
UNIT
SIZE
150
NOMINAL
V-P h- Hz
208/230-3-60
460-3-60
575-3-60
VO LTAGE
RANGE
IFM
TYPE
MinMaxRLALRAQty HpFLA
Std
18725423.0146.021/41.4
Alt15.0
Std
41450810.473.021/40.7
Alt7.4
Std
5186328.358.421/40.7
Alt7.4
LEGEND
FLA— Full Load Amps
HACR — Heating, Air Conditioning and Refrigeration
IFM— Indoor (Evaporator) Fan Motor
LRA — Locked Rotor Amps
MCA — Minimum Circuit Amps
MOCP — Maximum Overcurrent Protection
NEC — National Electrical Code
OFM — Outdoor (Condenser) Fan Motor
RLA — Rated Load Amps
*Used to determine minimum disconnect per NEC.
†Fuse or HACR circuit breaker per NEC.
**Fuse only.
††Compres sor no. 1 is shown in table.
208/230-3-60: Compressor no. 2 RLA is 14.1 amps and LRA is 105 amps.
460-3-60: Compressor no. 2 RLA is 7.1 amps and LRA is 55 amps.
575-3-60: Compressor no. 2 RLA is 6.4 amps and LRA is 40 amps.
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%.
the following formula to determine the percent of voltage imbalance.
% Voltage Imbalance
= 100 x
Determine maximum deviation from average voltage.
(AB) 457 – 452 = 5 v
(BC) 464 – 457 = 7 v
(AC) 457 – 455 = 2 v
Maximum deviation is 7 v.
Determine percent of voltage imbalance.
% Voltage Imbalance = 100 x
This amount of phase imbalance is satisfactory as it is below the maximum allowable 2%.
max voltage deviation from average voltage
average voltage
Example: Supply voltage is 460-3-60.
AB = 452 v
BC = 464 v
AC = 455 v
Average Voltage =
= 1.53%
=
7
457
452 + 464 + 455
1371
3
= 457
COMPRESSOR
3
(ea)
OFM
(ea)
Use
ELECTRIC
IFM
FLA
10.6
4.8
4.8
IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your local electric
utility company immediately.
3. For units with power exhaust: If a single power source is to be used, size wire to include
4. Determine heater capacity using multiplication factors table below:
power exhaust MCA and MOCP. Check MCA and MOCP when power exhaust is powered
through the unit (must be in accordance with NEC and/or local codes). Determine the
new MCA including the power exhaust using the following formula:
MCA New = MCA unit only + MCA of Power Exhaust
For example, using a 558FPX091000 unit with MCA = 40.1 and MOCP = 45, with
CRPWREXH030A01 power exhaust.
MCA New = 40.1 amps + 1.6 amps = 41.7 amps
If the new MCA does not exceed the published MOCP, then MOCP would not change.
The MOCP in this example is 45 amps, the MCA New is below 45, therefore the MOCP is
acceptable. If “MCA New” is larger than the published MOCP, raise the MOCP to the next
larger size. For separate power, the MOCP for the power exhaust will be 15 amps per
NEC.
NOTE: The following equation converts kW of heat energy to Btuh: kW x 3.412 = Btuh.
EXAMPLE: 32.0 kW (at 240 v) heater on 208 v
FLAMCAMOCP†FLALRA
51.258.670**66
PAR T N O.
200 208 230 240 380 440 460 480 550 575 600
= 32.0 (.751 mult factor)
= 24.0 kW capacity at 208 v
POWER
SUPPLY
MCA
(230 v)
MCA
(460 v)
ACTUAL HEATER VOLTAGE
MCA
(575 v)
DISCONNECT
SIZE*
383/383
406/406
MOCP
(for separate
power source)
192
203
154
163
—12—
Table 2B — Electrical Data (Units Without Convenience Outlet) (558F091, 103, 121, 151)
558F
NOMINAL
UNIT
SIZE
FLA— Full Load Amps
HACR — Heating, Air Conditionin g and Refrigeration
IFM— Indoor (Evaporator) Fan Motor
LRA— Locked Rotor Amps
MCA — Minimum Circuit Amps
MOCP — Maxim um Overcurrent Protection
NEC— National Electrical C ode
OFM — Outdoo r (Condenser) Fan Motor
RLA— Rated Load Amps
*Used to determine minimum disconnect per NEC.
†Fuse or HACR circuit breaker per NEC.
**Fuse only.
††Compressor no. 1 is shown in table.
208/230-3-60: Com pressor no. 2 RLA is 14.1 am ps and LRA is 105 am ps.
460-3-60: Compres sor no. 2 RLA is 7.1 amps an d LRA is 55 amps.
575-3-60: Compres sor no. 2 RLA is 6.4 amps an d LRA is 40 amps.
NOTES:
1. In compliance with NEC requirem ents for multimotor a nd combination lo ad equipment ( refer to NEC
2. Unbalanced 3-Phase Supply Voltage
V-P H-H z
208/230-3-60
091
460-3-60
575-3-60
LEGEND
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.
Never operate a motor where a ph ase imbalance in sup ply voltage is greater than 2%.
following formula to determine the percent of voltage imbalance.
% Voltage Imbalance
= 100 x
Determine maximum deviation from average voltage.
(AB) 457 – 452 = 5 v
(BC) 464 – 457 = 7 v
(AC) 457 – 455 = 2 v
Maximum deviation is 7 v.
Determine perc ent of voltage imbalance.
% Voltage Imbalance = 100 x
This amount of phas e imbalance is satisfacto ry as it is below the max imum allowable 2%.
max voltage deviation from averag e voltage
Example: Supply voltag e is 460-3-60.
AB = 452 v
BC = 464 v
AC = 455 v
IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your local electr ic utility
company immediately.
ELECTRIC HEATPOWER SUPPLY
Nominal
kW
—/——/—40.1/ 40.1 45/ 4542/ 42 229/229—
3. For units with power exhaust: If a single power source is to be used, size wire to include power
exhaust MCA and MOC P. Check MCA and MOCP whe n power exhaust is powered throu gh the
unit (must be in accordance with NEC and/or local codes). Determine the new MCA including the
power exhaust using the following form ula:
MCA New = MCA unit only + MCA of Power Exhaust
For example, using a 558FPX091000 unit with MCA = 40.1 and MOCP = 45, with
CRPWREXH030A01 power exhaust.
MCA New = 40.1 amps + 1.6 amps = 41.7 amps
If the new MCA does not exceed the published MO CP, then MOCP would not change. The MOCP
in this example is 45 amps, the MCA New is below 45, therefore the MOCP is acceptable. If “MCA
New” is larger than the published MOCP, raise the MOCP to the next larger size. For separate
power, the MOCP for the power exhaust will be 15 amps per NEC.
01533.039.752.96049149011
014 and 01641.750.265 .970 **61149014
013 and 01550.060.178 .480 **72149014
NONE——22.82524188—
01316.519.829.13027188011
01427.833.446.04542188011
01533.039.753.96050188011
014 and 01641.750.266 .970 **62188014
013 and 01550.060.179 .480 **73188014
NONE——26.83029182—
01316.519.834.14031182011
01427.833.451.06047182011
01533.039.758.96054182011
014 and 01641.750.271 .980 **66182014
013 and 01550.060.184 .490 **78182014
NONE——17.42018119—
01817.017.123.92522119011
01934.034.145.34042119011
018 and 01951.051.266 .670 **61119014
NONE——18.02019151—
01817.017.124.72523151011
01934.034.146.14542151011
018 and 01951.051.267 .470 **62151014
NONE——21.22523146—
01817.017.128.73526146011
01934.034.150.15046146011
018 and 01951.051.271 .480 **66146014
ELECTRIC HEATPOWER SUPPLY
Nominal
kW
FLAMCAMOCP†FLALRA
DISCONNECT
SIZE*
SINGLE POINT
BOX P/N
CRSINGLE---A 00
—14—
Table 2B — Electrical Data (Units Without Convenience Outlet) (558F091, 103, 121, 151) (cont)
558F
NOMINAL
UNIT
V-P H-H z
SIZE
208/230-3-60
151
460-3-60
575-3-60
FLA— Full Load Amps
HACR — Heating, Air Conditionin g and Refrigeration
IFM— Indoor (Evaporator) Fan Motor
LRA— Locked Rotor Amps
MCA — Minimum Circuit Amps
MOCP — Maxim um Overcurrent Protection
NEC— National Electrical C ode
OFM — Outdoo r (Condenser) Fan Motor
RLA— Rated Load Amps
*Used to determine minimum disconnect per NEC.
†Fuse or HACR circuit breaker per NEC.
**Fuse only.
††Compressor no. 1 is shown in table.
208/230-3-60: Com pressor no. 2 RLA is 14.1 am ps and LRA is 105 am ps.
460-3-60: Compres sor no. 2 RLA is 7.1 amps an d LRA is 55 amps.
575-3-60: Compres sor no. 2 RLA is 6.4 amps an d LRA is 40 amps.
NOTES:
1. In compliance with NEC requirem ents for multimotor a nd combination lo ad 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 ph ase imbalance in sup ply voltage is greater than 2%.
following formula to determine the percent of voltage imbalance.
% Voltage Imbalance
= 100 x
Determine maximum deviation from average voltage.
(AB) 457 – 452 = 5 v
(BC) 464 – 457 = 7 v
(AC) 457 – 455 = 2 v
Maximum deviation is 7 v.
Determine perc ent of voltage imbalance.
% Voltage Imbalance = 100 x
This amount of phas e imbalance is satisfacto ry as it is below the max imum allowable 2%.
LEGEND
max voltage deviation from averag e voltage
VOLTAGE
RANGE
IFM
TYPE
Min Max Qty RLA LRA Qty Hp FLA
STD
187 2542191562
ALT15
STD
414 50829752
ALT7.4
STD
518 63227.4542
ALT7.4
average voltage
Example: Supply voltag e is 460-3-60.
AB = 452 v
BC = 464 v
AC = 455 v
Average Voltage =
457
= 1.53%
7
COMPRESSOR
452 + 464 + 455
1371
=
3
= 457
(ea)
3
OFM (ea)
1
/41.4
1
/40.7
1
/40.7
IFM
FLA
10.6
HEATER
MODEL NO.
CRHEATER---A00
012 and 01731.8/42.488.4/102.0 123.7/140.8 125/150** 114/129 359/359015
010 and 01237.6/50.0 104.2/120.3 143.5/163.6 150/175** 132/151 359/359015
012 and 01731.8/42.488.4/102.0 129.2/146.3 150/150** 119/135 378/378015
010 and 01237.6/50.0 104.2/120.3 149.0/169.1 150/175** 137/156 378/378015
4.8
014 and 01641.750.268.770**63174014
013 and 01550.060.181.290**75174014
014 and 01641.750.271.980**66213014
013 and 01550.060.184.490**78213014
IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your local electr ic utility
company immediately.
3. For units with power exhaust: If a single power source is to be used, size wire to include power
exhaust MCA and MOC P. Check MCA and MOCP whe n power exhaust is powered throu gh the
unit (must be in accordance with NEC and/or local codes). Determine the new MCA including the
power exhaust using the following form ula:
MCA New = MCA unit only + MCA of Power Exhaust
For example, using a 558FPX091000 unit with MCA = 40.1 and MOCP = 45, with
CRPWREXH030A01 power exhaust.
MCA New = 40.1 amps + 1.6 amps = 41.7 amps
If the new MCA does not exceed the published MO CP, then MOCP would not change. The MOCP
in this example is 45 amps, the MCA New is below 45, therefore the MOCP is acceptable. If “MCA
New” is larger than the published MOCP, raise the MOCP to the next larger size. For separate
power, the MOCP for the power exhaust will be 15 amps per NEC.
4. Deter mine heater capa city using multiplicatio n factors table below:
HEATER
VOLTAGE
NOTE: The following equation converts kW of heat energy to Btuh: kW x 3.412 = Btuh.
= 32.0 (.751 mult factor)
= 24.0 kW capacity at 208 v
MCA
(230 v)
ACTUAL HEATER VOLTAGE
—15—
558F
UNIT
SIZE
090
102
NOMINAL
V-P h- Hz
208/230-3-60
460-3-60
575-3-60
208/230-3-60
460-3-60
575-3-60
Table 2C — Electrical Data (Units With Convenience Outlet) (558F090, 102, 120, 150)
VO LTAGE
RANGE
IFM
TYPE
MinMaxRLALRAQty HpFLA
Std
and
Alt
18725414.091.021/41.4
High10.6
Std
and
Alt
4145086.442.021/40.7
High4.8
Std
and
Alt
5186325.239.021/40.7
High4.8
Std
18725416.0137.021/41.4
High10.6
Std
4145088.369.021/40.7
High4.8
Std
5186326.458.021/40.7
High4.8
COMPRESSOR
(ea)
OFM
(ea)
ELECTRIC
IFM
FLA
5.8
2.6
2.6
5.8
2.6
2.6
HEAT
Nominal
kW
——46.1/ 46.150/ 5048/ 48
7.8/10.421.7/ 25.046.1/ 46.150/ 5048/ 48
12.0/16.033.4/ 38.553.9/ 60.460/ 70**51/ 56
18.6/24.851.7/ 59.776.9/ 86.880/ 90**72/ 81
24.0/32.066.7/ 77.095.6/108.5100/110**89/101
31.8/42.488.4/102.0122.7/139.8125/150**114/130
——50.9/ 50.960/ 6053/ 53
7.8/10.421.7/ 25.050.9/ 50.960/ 6053/ 53
12.0/16.033.4/ 38.559.9/ 66.470/ 70**56/ 62
18.6/24.851.7/ 59.782.9/ 92.890/100**77/ 86
24.0/32.066.7/ 77.0101.6/114.5110/125**94/106
31.8/42.488.4/102.0128.7/145.8150/150**119/135
——21.12522
13.916.726.82525
16.519.830.83528
27.833.447.85044
33.039.755.66051
41.750.268.670**63
——23.32524
13.916.729.53027
16.519.833.53531
27.833.450.46046
33.039.758.36054
41.750.271.380**66
——17.62018
34.034.148.05044
——19.42520
34.034.150.16046
——50.6/ 50.660/ 6052/ 52
7.8/10.421.7/ 25.050.6/ 50.660/ 6052/ 52
12.0/16.033.4/ 38.553.9/ 60.460/ 70**52/ 56
18.6/24.851.7/ 59.776.9/ 86.880/ 90**72/ 81
24.0/32.066.7/ 77.095.6/108.5100/110**89/101
31.8/42.488.4/102.0122.7/139.8125/150**114/130
——55.4/ 55.460/ 6058/ 58
7.8/10.421.7/ 25.055.4/ 55.460/ 6058/ 58
12.0/16.033.4/ 38.559.9/ 66.470/ 70**58/ 62
18.6/24.851.7/ 59.782.9/ 92.890/100**77/ 86
24.0/32.066.7/ 77.0101.6/114.5110/125**94/106
31.9/42.488.4/102.0128.7/145.8150/150**119/135
——25.43026
13.916.726.83026
16.519.830.83528
27.833.447.75044
33.039.755.66051
41.750.268.670**63
——27.63026
13.916.729.53029
16.519.833.53531
27.833.450.46046
33.039.758.36054
41.750.271.380**66
——20.32520
34.034.149.95044
——22.12522
34.034.150.16046
FLAMCAMOCP†FLALRA
POWER
SUPPLY
DISCONNECT
SIZE*
233/233
277/277
110
132
10017.017.126.62524
11717.017.128.83026
325/325
369/369
164
186
13817.017.126.62524
15517.017.128.83026
—16—
Table 2C — Electrical Data (Units With Convenience Outlet) (558F090, 102, 120, 150) (cont)
558F
UNIT
SIZE
120
NOMINAL
V-P h- Hz
208/230-3-60
460-3-60
575-3-60
VO LTAGE
RANGE
IFM
TYPE
MinMaxRLALRAQty Hp FLA
Std
Alt7.5
18725415.8130.021/41.4
High15.0
Std
Alt
4145087.964.021/40.7
High
Std
Alt3.4
5186326.652.021/40.7
High7.4
LEGEND
FLA— Full Load Amps
HACR — Heating, Air Conditioning and Refrigeration
IFM— Indoor (Evaporator) Fan Motor
LRA — Locked Rotor Amps
MCA — Minimum Circuit Amps
MOCP — Maximum Overcurrent Protection
NEC — National Electrical Code
OFM — Outdoor (Condenser) Fan Motor
RLA — Rated Load Amps
*Used to determine minimum disconnect per NEC.
†Fuse or HACR circuit breaker per NEC.
**Fuse only.
††Compres sor no. 1 is shown in table.
208/230-3-60: Compressor no. 2 RLA is 14.1 amps and LRA is 105 amps.
460-3-60: Compressor no. 2 RLA is 7.1 amps and LRA is 55 amps.
575-3-60: Compressor no. 2 RLA is 6.4 amps and LRA is 40 amps.
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%.
the following formula to determine the percent of voltage imbalance.
% Voltage Imbalance
= 100 x
Determine maximum deviation from average voltage.
(AB) 457 – 452 = 5 v
(BC) 464 – 457 = 7 v
(AC) 457 – 455 = 2 v
Maximum deviation is 7 v.
Determine percent of voltage imbalance.
% Voltage Imbalance = 100 x
This amount of phase imbalance is satisfactory as it is below the maximum allowable 2%.
max voltage deviation from average voltage
average voltage
Example: Supply voltage is 460-3-60.
AB = 452 v
BC = 464 v
AC = 455 v
Average Voltage =
= 1.53%
7
457
452 + 464 + 455
1371
=
3
= 457
COMPRESSOR
3
(ea)
OFM
(ea)
Use
ELECTRIC
IFM
FLA
5.8
2.6
3.4
7.4
2.6
IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your local electric
utility company immediately.
3. For units with power exhaust: If a single power source is to be used, size wire to include
4. Determine heater capacity using multiplication factors table below:
power exhaust MCA and MOCP. Check MCA and MOCP when power exhaust is powered
through the unit (must be in accordance with NEC and/or local codes). Determine the
new MCA including the power exhaust using the following formula:
MCA New = MCA unit only + MCA of Power Exhaust
For example, using a 558FPX091000 unit with MCA = 40.1 and MOCP = 45, with
CRPWREXH030A01 power exhaust.
MCA New = 40.1 amps + 1.6 amps = 41.7 amps
If the new MCA does not exceed the published MOCP, then MOCP would not change.
The MOCP in this example is 45 amps, the MCA New is below 45, therefore the MOCP is
acceptable. If “MCA New” is larger than the published MOCP, raise the MOCP to the next
larger size. For separate power, the MOCP for the power exhaust will be 15 amps per
NEC.
NOTE: The following equation converts kW of heat energy to Btuh: kW x 3.412 = Btuh.
EXAMPLE: 32.0 kW (at 240 v) heater on 208 v
FLAMCAMOCP†FLALRA
PAR T N O.
200 208 230 240 380 440 460 480 550 575 600
= 32.0 (.751 mult factor)
= 24.0 kW capacity at 208 v
POWER
SUPPLY
MCA
(230 v)
MCA
(460 v)
ACTUAL HEATER VOLTAGE
MCA
(575 v)
DISCONNECT
SIZE*
311/311
330/330
378/378
MOCP
(for separate
power source)
154
194
188
110
141
136
—17—
Table 2C — Electrical Data (Units With Convenience Outlet) (558F090, 102, 120, 150) (cont)
558F
UNIT
SIZE
150
NOMINAL
V-P h- Hz
208/230-3-60
460-3-60
575-3-60
VO LTAGE
RANGE
IFM
TYPE
Min MaxRLALRAQty Hp FLA
Std
18725423.0146.021/41.4
Alt15.0
Std
41450810.473.021/40.7
Alt7.4
Std
5186328.358.421/40.7
Alt7.4
LEGEND
FLA— Full Load Amps
HACR — Heating, Air Conditioning and Refrigeration
IFM— Indoor (Evaporator) Fan Motor
LRA — Locked Rotor Amps
MCA — Minimum Circuit Amps
MOCP — Maximum Overcurrent Protection
NEC — National Electrical Code
OFM — Outdoor (Condenser) Fan Motor
RLA — Rated Load Amps
*Used to determine minimum disconnect per NEC.
†Fuse or HACR circuit breaker per NEC.
**Fuse only.
††Compres sor no. 1 is shown in table.
208/230-3-60: Compressor no. 2 RLA is 14.1 amps and LRA is 105 amps.
460-3-60: Compressor no. 2 RLA is 7.1 amps and LRA is 55 amps.
575-3-60: Compressor no. 2 RLA is 6.4 amps and LRA is 40 amps.
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%.
the following formula to determine the percent of voltage imbalance.
% Voltage Imbalance
= 100 x
Determine maximum deviation from average voltage.
(AB) 457 – 452 = 5 v
(BC) 464 – 457 = 7 v
(AC) 457 – 455 = 2 v
Maximum deviation is 7 v.
Determine percent of voltage imbalance.
% Voltage Imbalance = 100 x
This amount of phase imbalance is satisfactory as it is below the maximum allowable 2%.
max voltage deviation from average voltage
average voltage
Example: Supply voltage is 460-3-60.
AB = 452 v
BC = 464 v
AC = 455 v
Average Voltage =
= 1.53%
=
7
457
452 + 464 + 455
1371
3
= 457
COMPRESSOR
3
(ea)
OFM
(ea)
Use
ELECTRIC
IFM
FLA
10.6
4.8
4.8
IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your local electric
utility company immediately.
3. For units with power exhaust: If a single power source is to be used, size wire to include
4. Determine heater capacity using multiplication factors table below:
power exhaust MCA and MOCP. Check MCA and MOCP when power exhaust is powered
through the unit (must be in accordance with NEC and/or local codes). Determine the
new MCA including the power exhaust using the following formula:
MCA New = MCA unit only + MCA of Power Exhaust
For example, using a 558FPX091000 unit with MCA = 40.1 and MOCP = 45, with
CRPWREXH030A01 power exhaust.
MCA New = 40.1 amps + 1.6 amps = 41.7 amps
If the new MCA does not exceed the published MOCP, then MOCP would not change.
The MOCP in this example is 45 amps, the MCA New is below 45, therefore the MOCP is
acceptable. If “MCA New” is larger than the published MOCP, raise the MOCP to the next
larger size. For separate power, the MOCP for the power exhaust will be 15 amps per
NEC.
NOTE: The following equation converts kW of heat energy to Btuh: kW x 3.412 = Btuh.
EXAMPLE: 32.0 kW (at 240 v) heater on 208 v
FLAMCAM OCP†FLALRA
PAR T N O.
200 208 230 240 380 440 460 480 550 575 600
= 32.0 (.751 mult factor)
= 24.0 kW capacity at 208 v
POWER
SUPPLY
80/ 80**
80/ 80**
110/125**
150/150**
150/150**
90/ 80**
90/ 80**
110/125**
150/175**
175/175**
80**
80**
70**
80**
80**
MCA
(230 v)
MCA
(460 v)
ACTUAL HEATER VOLTAGE
MCA
(575 v)
DISCONNECT
SIZE*
74/ 74
74/ 74
94/106
119/135
138/156
79/ 79
79/ 79
99/111
124/140
143/161
66
77
57
69
80
(for separate
power source)
387/387
410/410
195
206
156
165
MOCP
—18—
Table 2D — Electrical Data (Units With Convenience Outlet) (558F091, 103, 121, 151)
558F
NOMINAL
UNIT
V-P H-H z
SIZE
208/230-3-60
091
460-3-60
575-3-60
FLA— Full Load Amps
HACR — Heating, Air Conditionin g and Refrigeration
IFM— Indoor (Evaporator) Fan Motor
LRA— Locked Rotor Amps
MCA — Minimum Circuit Amps
MOCP — Maxim um Overcurrent Protection
NEC— National Electrical C ode
OFM — Outdoo r (Condenser) Fan Motor
RLA— Rated Load Amps
*Used to determine minimum disconnect per NEC.
†Fuse or HACR circuit breaker per NEC.
**Fuse only.
††Compressor no. 1 is shown in table.
208/230-3-60: Com pressor no. 2 RLA is 14.1 am ps and LRA is 105 am ps.
460-3-60: Compres sor no. 2 RLA is 7.1 amps an d LRA is 55 amps.
575-3-60: Compres sor no. 2 RLA is 6.4 amps an d LRA is 40 amps.
NOTES:
1. In compliance with NEC requirem ents for multimotor a nd combination lo ad 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 ph ase imbalance in sup ply voltage is greater than 2%.
following formula to determine the percent of voltage imbalance.
% Voltage Imbalance
= 100 x
Determine maximum deviation from average voltage.
(AB) 457 – 452 = 5 v
(BC) 464 – 457 = 7 v
(AC) 457 – 455 = 2 v
Maximum deviation is 7 v.
Determine perc ent of voltage imbalance.
% Voltage Imbalance = 100 x
This amount of phas e imbalance is satisfacto ry as it is below the max imum allowable 2%.
LEGEND
max voltage deviation from averag e voltage
Example: Supply voltag e is 460-3-60.
AB = 452 v
BC = 464 v
AC = 455 v
IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your local electr ic utility
company immediately.
ELECTRIC H EATPOWER SUPPLY
Nominal
kW
3. For units with power exhaust: If a single power source is to be used, size wire to include power
exhaust MCA and MOC P. Check MCA and MOCP whe n power exhaust is powered throu gh the
unit (must be in accordance with NEC and/or local codes). Determine the new MCA including the
power exhaust using the following form ula:
MCA New = MCA unit only + MCA of Power Exhaust
For example, using a 558FPX091000 unit with MCA = 40.1 and MOCP = 45, with
CRPWREXH030A01 power exhaust.
MCA New = 40.1 amps + 1.6 amps = 41.7 amps
If the new MCA does not exceed the published MO CP, then MOCP would not change. The MOCP
in this example is 45 amps, the MCA New is below 45, therefore the MOCP is acceptable. If “MCA
New” is larger than the published MOCP, raise the MOCP to the next larger size. For separate
power, the MOCP for the power exhaust will be 15 amps per NEC.
01533.039.755.66051151011
014 and 01641.750.268 .770 **63151014
013 and 01550.060.181 .190 **75151014
NONE——25.03026190—
01316.519.831.83029190011
01427.833.446.04545190011
01533.039.756.66052190011
014 and 01641.750.269 .770 **64190014
013 and 01550.060.182 .190 **76190014
NONE——29.03531184—
01316.519.836.84034184011
01427.833.451.06049184011
01533.039.761.670**57184014
014 and 01641.750.274 .780 **69184014
013 and 01550.060.187 .190 **80184014
NONE——19.12520121—
01817.017.126.12524121011
01934.034.147.44544121011
018 and 01951.051.268 .870 **63121014
NONE——19.72521152—
01817.017.126.92525152011
01934.034.148.24544152011
018 and 01951.051.269 .670 **64152014
NONE——22.92525148—
01817.017.130.93528148011
01934.034.152.25048148011
018 and 01951.051.273 .680 **68148014
ELECTRIC HEATPOWER SUPPLY
Nominal
kW
FLAMCAMOCP†FLALRA
DISCONNECT
SIZE*
SINGLE POINT
BOX P/N
CRSINGLE---A 00
—20—
Table 2D — Electrical Data (Units With Convenience Outlet) (558F091, 103, 121, 151) (cont)
558F
NOMINAL
UNIT
V-P H-H z
SIZE
208/230-3-60
151
460-3-60
575-3-60
FLA— Full Load Amps
HACR — Heating, Air Conditionin g and Refrigeration
IFM— Indoor (Evaporator) Fan Motor
LRA— Locked Rotor Amps
MCA — Minimum Circuit Amps
MOCP — Maxim um Overcurrent Protection
NEC— National Electrical C ode
OFM — Outdoo r (Condenser) Fan Motor
RLA— Rated Load Amps
*Used to determine minimum disconnect per NEC.
†Fuse or HACR circuit breaker per NEC.
**Fuse only.
††Compressor no. 1 is shown in table.
208/230-3-60: Com pressor no. 2 RLA is 14.1 am ps and LRA is 105 am ps.
460-3-60: Compres sor no. 2 RLA is 7.1 amps an d LRA is 55 amps.
575-3-60: Compres sor no. 2 RLA is 6.4 amps an d LRA is 40 amps.
NOTES:
1. In compliance with NEC requirem ents for multimotor a nd combination lo ad 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 ph ase imbalance in sup ply voltage is greater than 2%.
following formula to determine the percent of voltage imbalance.
% Voltage Imbalance
= 100 x
Determine maximum deviation from average voltage.
(AB) 457 – 452 = 5 v
(BC) 464 – 457 = 7 v
(AC) 457 – 455 = 2 v
Maximum deviation is 7 v.
Determine perc ent of voltage imbalance.
% Voltage Imbalance = 100 x
This amount of phas e imbalance is satisfacto ry as it is below the max imum allowable 2%.
LEGEND
max voltage deviation from averag e voltage
VOLTAGE
RANGE
IFM
TYPE
Min Max Qty RLA LRA Qty Hp FLA
STD
187 2542191562
ALT15
STD
414 50829752
ALT7.4
STD
518 63227.4542
ALT7.4
average voltage
Example: Supply voltag e is 460-3-60.
AB = 452 v
BC = 464 v
AC = 455 v
Average Voltage =
457
= 1.53%
7
COMPRESSOR
452 + 464 + 455
1371
=
3
= 457
(ea)
3
OFM (ea)
1
/41.4
1
/40.7
1
/40.7
IFM
FLA
10.6
HEATER
MODEL NO.
CRHEATER---A00
012 and 01731.8/42.488.4/102.0 129.7/146.2 150/150** 119/135 364/364015
010 and 01237.6/50.0 104.2/120.3 149.6/169.0 150/175** 138/156 364/364015
012 and 01731.8/42.488.4/102.0 135.2/151.7 150/175** 124/140 383/383015
010 and 01237.6/50.0 104.2/120.3 155.1/174.5 175/175** 143/161 383/383015
4.8
014 and 01641.750.271.480**66176014
013 and 01550.060.183.990**77176014
014 and 01641.750.274.780**69215014
013 and 01550.060.187.190**80215014
IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your local electr ic utility
company immediately.
3. For units with power exhaust: If a single power source is to be used, size wire to include power
exhaust MCA and MOC P. Check MCA and MOCP whe n power exhaust is powered throu gh the
unit (must be in accordance with NEC and/or local codes). Determine the new MCA including the
power exhaust using the following form ula:
MCA New = MCA unit only + MCA of Power Exhaust
For example, using a 558FPX091000 unit with MCA = 40.1 and MOCP = 45, with
CRPWREXH030A01 power exhaust.
MCA New = 40.1 amps + 1.6 amps = 41.7 amps
If the new MCA does not exceed the published MO CP, then MOCP would not change. The MOCP
in this example is 45 amps, the MCA New is below 45, therefore the MOCP is acceptable. If “MCA
New” is larger than the published MOCP, raise the MOCP to the next larger size. For separate
power, the MOCP for the power exhaust will be 15 amps per NEC.
4. Deter mine heater capa city using multiplicatio n factors table below:
HEATER
VOLTAGE
NOTE: The following equation converts kW of heat energy to Btuh: kW x 3.412 = Btuh.