installation, start-up and
service instructions
SINGLE PACKAGE ROOFTOP
HIGH-EFFICIENCY HEAT PUMP UNITS
Cancels: II 549B-90-5 II 549B-90-6
Dura
Pac
Plus Series
Sizes 090-120
71/2 to 10 Tons
549B
10/15/05
IMPORTANT — READ BEFORE INSTALLING
Read and become familiar with these installation instructions before installing this unit.
Be sure the ins tallation conforms to al l applicab le local an d
national codes.
These instructions contain important information for the
proper maintenance and repair of this equipment. Retain
these instructions for future use.
CONTENTS
Page
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . 1
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-33
I. Step 1 — Provide Unit Support. . . . . . . . . . . . . . . . . 1
II. Step 2 — Field Fabricate Ductwork . . . . . . . . . . . . . 1
III. Step 3 — Install Condensate Drain Line and
External Trap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
IV. Step 4 — Rig and Place Unit . . . . . . . . . . . . . . . . . . . 3
V. Step 5 — Make Electrical Connections . . . . . . . . . . 6
VI. Step 6 — Adjust Factory-Installed Options. . . . . . 10
VII. Step 7 — Adjust Indoor-Fan Speed . . . . . . . . . . . . 19
PRE-START-UP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34-36
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36-39
TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . .40-42
INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . . . . . . CL-1
SAFETY CONSIDERATIONS
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 should be performed by trained service personnel. When working on air-conditioning equipment, observe
precautions in the literature, tags and labels attached to the
unit, and other safety precautions that 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 on disconnect. Electrical
shock could cause personal injury.
CAUTION: Ensure voltage listed on unit data
plate agrees with electrical supply provided for the
unit.
INSTALLATION
This unit is shipped in the vertical configuration. To convert
to horizontal configuration, remove the side duct opening
covers. Using the same screw s, install th e cover s on th e vertical duct openings with the insulation-side down. Seals
around duct openings must be tight.
I. STEP 1 — PROVIDE UNIT SUPPORT
A. Roof Curb
Assemble and install the accessory roof curb in acco rdance
with instructions shipped wi th the curb. See Fig. 1. Install
insulation, cant stri ps, roofing felt, and counter flashing as
shown. Ductwork must be attached to the curb. If electric control power will be routed through the basepan, use the
appropriate accessory kit listed in Fig. 1, available from your
local distributor. Attach the accessory thru-the-bottom service connections to the basepan in accordance with the accessory installa tion inst ruct ions. Conn ect ions m ust b e in stal led
before the unit is set on the roof curb.
IMPORTANT: The gasketing of the unit to the roof curb is
critical for a watertight seal. Install the gasket supplied with
the roof curb as shown i n Fig. 1. An imprope rly applie d gasket can also result in air leaks and poor unit performance.
The roof curb should be level. Unit leveling tolerances are
shown in Fig. 2. This is necessary for the unit drain to function properly. Refer to Accessory Roof Curb Installation
Instructions for additional information as required.
B. Slab Mount (Horizontal Units Only)
Provide a level concrete slab that ex te nds a m ini mum o f 6 i n.
beyond the unit cabinet. Install a gravel apron in front of the
condenser coil air inlet to prevent grass and foliage from
obstructing airflow.
NOTE: Horizontal units may be installed on a roof curb if
required.
C. Alternate Unit Support (Curb or Slab Mount)
A non-combustible sleeper ra il can be used in the unit curb
support area. If sleeper rails cannot be used, support the
long sides of the unit with a minimum of 3 equally spaced
4-in. x 4-in. pads on each side.
II. STEP 2 — FIELD FABRICATE DUCTWORK
On vertical discharge units, secure all duc ts to the roof cu rb
and building structure. Do not connect ductwork to the unit.
For horizontal applications, field-supplied flanges should be
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.
Ducts passing through a n unco nditi one d spa ce mu st be ins ulated and covered with a vapor barrier.
If a plenum return is used on a vertical unit, the return
should be ducted through the roof deck to comply w ith applicable fire codes.
A minimum clearance to combustibles is not required around
ductwork on vertical discharge units. On horizontal discharge units, a minim um c learanc e of 1 in. is re quired for the
first 12 in. of ductwork. Cabinet return-air static pressure (a
negative condition) shall not exceed 0.30 in. wg with economizer or 0.45 in. wg without economize r.
CONNECTOR PKG.
ACCY.
CRBTMPWR001A01
CRBTMPWR002A01 1
CRBTMPWR003A01
CRBTMPWR004A01
B C D ALT DRAIN HOLE GAS POWER CONTROL ACCESSORY POWER
3
2′-8
7
[827]
/16″
1′-1015/16″
[583]
13/4″
[44.5]
ROOF CURB
ACCESSORY
CRRFCURB003A01 1′-2″ [356]
CRRFCURB004A01 2′-0″ [610]
/4″ [19] NPT
1
/2″ [12.7] NPT3/4″ [19] NPT
3
/4″ [19] NPT 11/4″ [31.7]
“A”
UNIT
SIZE
549B
090-120
3
/4″ [19] NPT
1
/4″ [31.7]
1
/2″ NPT
[12.7]
1
/2″ NPT
[12.7]
NOTES:
1. Roof curb accessory is shipped disassembled.
2. Insulated panels: 1-in. thick polyurethane foam, 1
density.
3. Dimensions in [ ] are in millimeters.
4. Roof curb: 16-gage steel.
5. Attach ductwork to curb (flanges of duct rest on curb).
6. Service clearance 4 ft on each side.
1
/2″ NPT
[12.7]
7. Direction of airflow.
8. Connector packages CRBTMPWR001A01 and 2A01
are for thru-the-curb gas type. Packages
CRBTMPWR003A01 and 4A01 are for thru-the-bottom
type gas connections.
3
/4 lb
Fig. 1 — Roof Curb Details
—2—
MAXIMUM ALLOWABLE
DIFFERENCE (in.)
A-B B-C A-C
0.5 1.0 1.0
Fig. 2 — Unit Leveling Tolerances
III. STEP 3 — INSTALL CONDENSATE DRAIN LINE AND
EXTERNAL TRAP
Condensate drain connections are located on the botto m and
end 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 end drain connection, make sure
the red plug in the alternate bottom connection is tight
before installing the unit.
To use the bottom drain connection for a roof curb installation, relocate the factory-installed red plug from the bottom
connection to the end c onnectio n. The ce nter drai n plug looks
like a star connection, but can be removed with a
1
/2-in.
socket drive exten sion. See Fig. 3A. The pipin g for the condensate dr ain and e xternal t rap 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. 3B.
IV. STEP 4 — RIG AND PLACE UNIT
Inspect the unit for transportation dama ge. File any claim
with the transportation agency . Keep the unit upright and do
not drop it. Spreader bars are not required if top crating is
left on the unit. Rol lers may be used to move th e unit acro ss
a roof. Level by using the unit frame as a reference. See
Table 1 and Fig. 4 for additional information. Operating
weight is shown in Table 1 and Fig. 4.
Lifting holes are pr ovide d i n t he b ase rai ls as shown in Fig. 4
and 5. Refer to rigging instructions on the unit.
DRAIN OUTLET
NOTE: Drain plug is shown in factory-installed position.
DRAIN PLUGHORIZONTAL
Fig. 3A — Condensate Drain Connection (Side View)
NOTE: Trap should be deep enough to offset maximum unit static dif-
ference. A 4-in. trap is recommended.
Fig. 3B — Condensate Drain Piping Details
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 Table 1 for unit weight of
economizer.
4. Unit weights do not include skid.
CAUTION: All panels must be in place when rigging.
Fig. 4 — Rigging Details
UNIT
549B
090 870 395 77.42 1966.5 41.5 1054 42.12 1070
102,120 1000 454 77.42 1966.5 41.5 1054 42.12 1070
WEIGHT
lb kg in. mm in. mm in. mm
‘‘A’’ ‘‘B’’ ‘‘C’’
UNIT
OPERATING
DIMENSIONS
—3—
A. Positioning
Maintain clearance around and above the unit to provide
proper airflow and service access. See Fig. 5.
Position the unit on the roof curb so that the f oll ow in g clea rances are maintained:
1
/4-in. clearance between the roof curb
and the base rails on each side and the duct side of unit;
5
3
/16-in. clearance between t he roof cu rb and con denser s ide
of unit (see Fig. 1, section C-C).
Table 1 — Physical Data
Do not install the unit indoors. Do not locate the unit air inlet
near exhaust vents or other sources of contaminated air.
Although the unit is weatherproof, guard against water from
higher level runoff and overhangs.
After the unit is in position, remove the polyethylene shipping wrapper and rigging skid.
BASE UNIT 549B 090 102 120
NOMINAL CAPACITY (tons) 7
OPERATING WEIGHT (lb)
Unit 870 1000 1000
EconoMi$er IV 75 75 75
Roof Curb 223 223 223
COMPRESSOR Scroll
Quantity 22 2
Oil (oz) (each compr) 57 70 57
REFRIGERANT TYPE R-22
Operating Charge (lb)
Circuit 1 9.5 11.0 10.7
Circuit 2 9.5 11.0 10.8
OUTDOOR FAN Propeller
Quantity...Diameter (in.) 2...22 2...22 2...22
Nominal Cfm 6500 6500 6500
Motor Hp...Rpm
OUTDOOR COIL Enhanced Copper Tubes, Aluminum Fins, Fixed Orifice Metering Device
Rows...Fins/in. 2...17 2...17 2...17
Total Face Area (sq ft) 20.5 25.1 25.1
INDOOR FAN Centrifugal Type
Quantity...Size (in.) Standard 1...15 x 15 1...15 x 15 1...15 x 15
Type Drive Standard Belt Belt Belt
Nominal Cfm 3000 3400 4000
Maximum Continuous Bhp Standard 2.90 2.90 3.70
Motor Frame Size Standard 56 56 56
Nominal Rpm Standard 1725 1725 1725
Fan Rpm Range Standard 730-950 840-1085 860-1080
Motor Bearing Type Ball Ball Ball
Maximum Allowable Rpm 2100 2100 2100
Motor Pulley Pitch Diameter Min/Max (in.) Standard 3.4/4.4 3.4/4.4 4.0/5.0
Nominal Motor Shaft Diameter (in.) Standard
Fan Pulley Pitch Diameter (in.) Standard 8.0 7.0 8.0
Belt, Quantity...Type...Length (in.) Standard 1...A...51 1...A...51 1...A...53
Pulley Center Line Distance (in.) Standard 16.75-19.25 16.75-19.25 15.85-17.50
Speed Change per Full Turn of
Movable Pulley Flange (rpm)
Movable Pulley Maximum Full
Turns from Closed Position
Factory Setting Standard 555
Factory Speed Setting (rpm) Standard 730 840 860
Fan Shaft Diameter at Pulley (in.) 111
High-Static 1...15 x 15 1...15 x 15 1...15 x 15
High-Static Belt Belt Belt
High-Static 4.20 4.20 5.25
High-Static 56 56 56
High-Static 1725 1725 1725
High-Static 860-1080 860-1080 830-1130
High-Static 4.0/5.0 4.0/5.0 2.8/3.8
High-Static
High-Static 8.0 8.0 5.8
High-Static 1...A...53 1...A...53 1...BX...48
High-Static 16.75-19.25 16.75-19.25 15.85-17.50
Standard 45 45 45
High-Static 45 45 60
Standard 555
High-Static 556
High-Static 555
High-Static 860 860 887
INDOOR COIL Enhanced Copper Tubes, Aluminum Double-Wavy Fins,
Rows...Fins/in. 3...15 4...15 4...15
Total Face Area (sq ft) 8.9 11.1 11.1
HIGH-PRESSURE SWITCH (psig)
Standard Compressor Internal Relief 625
Cutout 428
Reset (Auto.) 320
LOSS-OF-CHARGE/LOW-PRESSURE SWITCH (Liquid Line) (psig)
Cutout 7 ± 3
Reset (Auto.) 22 ± 5
FREEZE PROTECTION THERMOSTAT
Opens (F) 30
Closes (F) 45
1
/
1
/4...1100
7
/
8
7
/
8
2
81/
1
/4...1100
7
/
8
7
/
8
2
10
1
/4...1100
7
/
8
7
/
8
Acutrol Metering Device
OUTDOOR-AIR INLET SCREEN Cleanable. Screen size and quantity vary by option selected.
RETURN-AIR FILTERS Throwaway
Quantity...Size (in.) 4...16 x 20 x 2 4...20 x 20 x 2
LEGEND
Bhp — Brake Horsepower
—4—
Fig. 5 — Base Unit Dimensions
—5—
V. STEP 5 — MAKE ELECTRICAL CONNECTIONS
C
C
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 wir e
connected to unit ground lug in control compartment,
or conduit approved for electrical ground when
installed in accordance with NEC (National Electrical
Code), ANSI/NFPA (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
3. For units with electric heat, refer to Table 2 and
Accessory Installation Instructions.
NOTE: During operation, voltage to compressor terminals
must be within the range indicated on the unit nameplate
(see Tables 3A-3D). On 3-phase units, voltages between
phases must be balanced within 2%, and the current within
10%. Use the formula shown in Tables 3A-3D, Note 2 on
page 9 to determine the percentage of voltage imbalance.
Operation on imp rop er lin e volt age or exc essiv e pha se imba lance constitutes abuse and may cause damage to electrical
components. (Such operation would invalidate any applicable Bryant warranty .)
personal injury of others.
A. Field Power Supply
All units except 208/230-v units are factory wired for the
voltage shown on the nameplate. If the 208/230-v unit will 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 c onnecting it to the
1
200-v
/4-in. male spade terminal on the transformer.
Refer to the unit label diagram for additional information.
Pigtails are provided for fie ld wire connectio ns. Use factorysupplied splices or a UL (Underwriters’ Laboratories)
approved copper/aluminum connector.
When installing units, provide a disconnect per NEC.
All field wiring must comply wi th the N E C and lo cal require-
ments. In Canada, electrical connections must be in accordance with CSA (Canadian Standards Association) C22.1
Canadian Electrical Code Part One.
Install field wiring as foll ows:
1. Install conduit through the side panel openings. For
units without electric heat, install conduit between
the disconnect and control box.
2. Install power lines to terminal connections as shown
LEGEND
— Contactor
OMP — Compressor
IFC — Indoor Fan Contactor
NEC — National Electrical Code
Field Wiring
Factory Wiring
Splice Connection
(Factory-Supplied)
Fig. 6 — Power Wiring Connections
208/230-3-60
460-3-60
in Fig. 6.
Table 2 — Electric Heating Capacities
UNIT
549B
090
102
120
*Two heater packages required to provide kW indicated.
NOTES:
1. The rated heater voltage is 240 and 480 v. If power distribution voltage varies
from rated heater voltage, heater kW will vary accordingly.
2. To determine heater kW at voltages other than those shown in table, use the
following formula:
Heater kW
2
voltage)
UNIT VOLTAGE
(60 Hz)
208/230/240
(3 phase)
460/480
(3 phase)
208/230/240
(3 phase)
460/480
(3 phase)
208/230/240
(3 phase)
460/480
(3 phase)
= Heater kW rated x (unit power distribution voltage/rated heater
new
ACCESSORY
kW
7.8/ 9.6/10.4
12.0/14.7/16.0
18.6/22.8/24.8
24.0/29.4/32.0
31.8/39.0/42.4*
12.8/13.9
15.2/16.5
25.6/27.8
30.4/33.0
38.4/41.7*
7.8/ 9.6/10.4
12.0/14.7/16.0
18.6/22.8/24.8
24.0/29.4/32.0
31.8/39.0/42.4*
12.8/13.9
15.2/16.5
25.6/27.8
30.4/33.0
38.4/41.7*
7.8/ 9.6/10.4
12.0/14.7/16.0
24.0/29.4/32.0
31.8/39.0/42.4*
37.6/46.2/50.0*
15.2/16.5
25.6/27.8
30.4/33.0
38.4/41.7*
46.2/50.0*
ELECTRIC HEATER PART NUMBER
CRHEATER---A00
017
010
011
012
012 and 017
016
013
014
015
014 and 016
117
110
111
112
112, 117
116
113
114
115
114,116
017
010
012
012 and 017
010 and 012
013
014
015
014 and 016
013 and 015
As an example:
For a 16 kW heater rated at 240 v with a power distribution voltage of 215 v
= 16 kW (215/240)
kW
new
kW
= 12.8 kW (rating at 215 v)
new
SINGLE POINT BOX PACKAGE NO.
CRSINGLE---A00
2
007
007
009
009
013
006
006
008
008
—
012
012
015
015
017
011
011
014
014
016
012
012
015
017
017
011
014
014
016
016
—6—
UNIT
549B
090
102
120
Table 3A — Electrical Data — Standard Motor Units Without Electrical Convenience Outlet
NOMINAL
VOLTAGE
(V-Ph-Hz)
208/230-3-60 187 254 12.4 88.0 1.4 7.5
460-3-60 414 508 6.4 44.0 0.7 3.4
208/230-3-60 187 254 13.9 105 1.4 7.5
460-3-60 414 508 7.9 55.0 0.7 3.4
208/230-3-60 187 254 19.3 123.0 1.4 10.6
460-3-60 414 508 10.0 62.0 0.7 4.8
VOLTAGE
RANGE
Min Max RLA LRA FLA FLA kW** FLA MCA MOCP FLA LRA
COMPRESSOR
(each)
OFM
(each)
IFM ELECTRIC HEAT* POWER SUPPLY
—
7.8/10.4
12.0/16.0
18.6/24.8
24.0/32.0
31.8/42.4
—
13.9
16.5
27.8
33.0
41.7
—
7.8/10.4
12.0/16.0
18.6/24.8
24.0/32.0
31.8/42.4
—
13.9
16.5
27.8
33.0
41.7
—
7.8/10.4
12.0/16.0
24.0/32.0
31.8/42.4
37.6/50.0
—
16.5
27.8
33.0
41.7
50.0
—
21.7/ 25.0
33.3/ 38.5
51.6/ 59.7
66.6/ 77.0
88.3/102.0
—
16.7
19.8
33.4
39.7
50.2
—
21.7/ 25.0
33.3/ 38.5
51.6/ 59.7
66.6/ 77.0
88.3/102.0
—
16.7
19.8
33.4
39.7
50.2
—
21.7/ 25.0
33.3/ 38.5
66.6/ 77.0
88.3/102.0
104.4/120.3
—
19.8
33.4
39.7
50.2
60.1
38.2/ 38.2
65.3/ 69.5
79.8/ 86.3
102.7/112.8
121.5/134.5
148.6/165.7
19.2
40.1
44.0
61.0
68.8
82.0
41.3/ 41.3
68.4/ 72.5
82.9/ 89.4
105.8/115.9
124.5/137.5
151.7/168.8
22.3
43.2
47.0
64.0
71.9
85.0
56.8/ 56.8
84.0/ 88.1
98.5/105.0
140.1/153.1
167.2/184.3
187.3/177.1
28.7
53.5
70.5
78.3
91.5
88.8
110/125
125/150
150/175
110/125
125/150
175/175
100/110
150/175
175/200
200/200
40/ 40††
70/ 70††
80/ 90
20††
45††
45††
70
70
90
45/ 45††
70/ 80††
90/ 90
25††
45††
50††
70
80
90
60/ 60††
90/ 90
30††
60††
80
80
100
100
MINIMUM UNIT
DISCONNECT
SIZE†
242/242
40/ 40
264/267
65/ 69
275/281***
79/ 85
20
39
43
59
66
78
43/ 43
68/ 72
82/ 88
23
43
46
62
69
81
60/ 60
85/ 89
98/104
30
53
69
76
88
99
294/302***
309/319***
330/344***
276/276
298/301
309/315***
328/336***
343/353***
364/378***
337/337
358/362***
370/375***
403/414***
425/439***
441/457***
100/109
117/129
142/158
103/112
120/132
145/161
136/148
161/177
180/198
121
138
141
155
161
171
143
160
163
177
183
193
170
189
203
209
220***
230***
Table 3B — Electrical Data — Standard Motor Units With Electrical Convenience Outlet
UNIT
549B
090
NOMINAL
VOLTAGE
(V-Ph-Hz)
208/230-3-60 187 254 12.4 88.0 1.4 7.5
460-3-60 414 508 6.4 44.0 0.7 3.4
208/230-3-60 187 254 13.9 105 1.4 7.5
102
460-3-60 414 508 7.9 55.0 0.7 3.4
208/230-3-60 187 254 19.3 123.0 1.4 10.6
120
460-3-60 414 508 10.0 62.0 0.7 4.8
NOTE: See legend and notes on page 9.
VOLTAGE
RANGE
Min Max RLA LRA FLA FLA kW** FLA MCA MOCP FLA LRA
COMPRESSOR
(each)
OFM
IFM ELECTRIC HEAT* POWER SUPPLY
(each)
—
7.8/10.4
12.0/16.0
18.6/24.8
24.0/32.0
31.8/42.4
—
13.9
16.5
27.8
33.0
41.7
—
7.8/10.4
12.0/16.0
18.6/24.8
24.0/32.0
31.8/42.4
—
13.9
16.5
27.8
33.0
41.7
—
7.8/10.4
12.0/16.0
24.0/32.0
31.8/42.4
37.6/50.0
—
16.5
27.8
33.0
41.7
50.0
—
21.7/ 25.0
33.3/ 38.5
51.6/ 59.7
66.6/ 77.0
88.3/102.0
—
16.7
19.8
33.4
39.7
50.2
—
21.7/ 25.0
33.3/ 38.5
51.6/ 59.7
66.6/ 77.0
88.3/102.0
—
16.7
19.8
33.4
39.7
50.2
—
21.7/ 25.0
33.3/ 38.5
66.6/ 77.0
88.3/102.0
104.4/120.3
—
19.8
33.4
39.7
50.2
60.1
43.0/ 43.0
70.1/ 74.3
84.6/ 91.1
107.5/117.6
126.3/139.3
153.4/170.5
46.1/ 46.1
73.2/ 77.3
87.7/ 94.2
110.6/120.7
129.3/142.3
156.5/173.6
61.6/ 61.6
88.8/ 92.9
103.3/109.8
144.9/157.9
172.0/189.1
192.1/181.9
21.4
42.3
46.1
63.1
71.0
84.1
24.5
45.3
49.2
66.2
74.1
87.2
30.9
55.6
72.6
80.5
93.6
91.0
45/ 45††
80/ 80
90/100
110/125
150/150
175/175
25††
45††
50††
70
80
90
50/ 50††
80/ 80
90/100
125/125
150/150
175/175
25††
50††
50††
70
80
90
70/ 70
90/100
110/110
150/175
175/200
200/200
35††
60††
80
90
100
100
MINIMUM UNIT
DISCONNECT
SIZE†
247/247
46/ 46
269/272
71/ 75
280/285***
84/ 90
23
42
46
61
68
80
49/ 49
74/ 78
87/ 93
26
45
49
64
72
84
65/ 65
90/ 94
33
55
71
78
90
102
298/307***
313/324***
335/349***
281/281
303/306
314/319***
332/341***
347/358***
369/383***
341/341
363/366***
375/380***
408/418***
430/443***
446/462***
105/115
122/134
147/163
108/118
126/138
151/166
104/110
142/154
167/183
185/204
123
140
143
157
163
174
145
162
165
179
185
196
172
191
205
211
222***
232***
—7—
Table 3C — Electrical Data — High-Static Motor Units Without
Electrical Convenience Outlet
UNIT
549B
090
102
120
NOMINAL
VOLTAGE
(V-Ph-Hz)
208/230-3-60 187 254 12.4 88.0 1.4 10.6
460-3-60 414 508 6.4 44.0 0.7 4.8
208/230-3-60 187 254 13.9 105 1.4 10.6
460-3-60 414 508 7.9 55.0 0.7 4.8
208/230-3-60 187 254 19.3 123.0 1.4 15.0
460-3-60 414 508 10.0 62.0 0.7 7.4
VOLTAGE
RANGE
Min Max RLA LRA FLA FLA kW** FLA MCA MOCP FLA LRA
COMPRESSOR
(each)
OFM
IFM ELECTRIC HEAT* POWER SUPPLY
(each)
—
7.8/10.4
12.0/16.0
18.6/24.8
24.0/32.0
31.8/42.4
—
13.9
16.5
27.8
33.0
41.7
—
7.8/10.4
12.0/16.0
18.6/24.8
24.0/32.0
31.8/42.4
—
13.9
16.5
27.8
33.0
41.7
—
7.8/10.4
12.0/16.0
24.0/32.0
31.8/42.4
37.5/50.0
—
16.5
27.8
33.0
41.7
50.0
—
21.7/ 25.0
33.3/ 38.5
51.6/ 59.7
66.6/ 77.0
88.3/102.0
—
16.7
19.8
33.4
39.7
50.2
—
21.7/ 25.0
33.3/ 38.5
51.6/ 59.7
66.6/ 77.0
88.3/102.0
—
16.7
19.8
33.4
39.7
50.2
—
21.7/ 25.0
33.3/ 38.5
66.6/ 77.0
88.3/102.0
104.4/120.3
—
19.8
33.4
39.7
50.2
60.1
41.3/ 41.3
68.4/ 72.6
82.9/ 89.4
105.8/115.9
124.6/137.6
151.7/168.8
20.6
41.5
45.4
62.4
70.2
83.4
44.4/ 44.4
71.5/ 75.6
86.0/ 92.5
108.9/119.0
127.6/140.6
154.8/171.9
23.7
44.6
48.4
65.4
73.3
86.4
61.2/ 61.2
88.4/ 92.5
102.9/109.4
144.5/157.5
171.6/188.7
191.7/181.5
31.3
56.1
73.1
80.9
94.1
96.4
45/ 45††
70/ 80
90/ 90
110/125
125/150
175/175
25††
45††
50††
70
80
90
45/ 45††
80/ 80
90/100
110/125
150/150
175/175
25††
45††
50††
70
80
90
70/ 70
90/100
110/110
150/175
175/200
200/200
35††
60††
80
90
100
100
MINIMUM UNIT
DISCONNECT
SIZE†
267/267
44/ 44
288/292
69/ 73
300/305***
82/ 88
22
41
45
60
68
80
47/ 47
72/ 76
85/ 91
25
44
48
63
71
83
65/ 65
90/ 94
33
56
72
79
91
102
318/336***
333/344***
355/369***
301/301
322/326
334/339***
352/360***
367/378***
389/403***
360/360
382/385***
393/399***
427/437***
448/462***
464/480***
103/113
121/132
145/169
106/116
124/136
149/164
103/109
141/153
166/182
185/203
134
150
153
167
173
184
156
172
175
189
195
206
181
201
215
221
231***
241***
Table 3D — Electrical Data — High-Static Motor Units With Electrical Convenience Outlet
UNIT
549B
090
NOMINAL
VOLTAGE
(V-Ph-Hz)
208/230-3-60 187 254 12.4 88.0 1.4 10.6
460-3-60 414 508 6.4 44.0 0.7 4.8
208/230-3-60 187 254 13.9 105 1.4 10.6
102
460-3-60 414 508 7.9 55.0 0.7 4.8
208/230-3-60 187 254 19.3 123.0 1.4 15.0
120
460-3-60 414 508 10.0 62.0 0.7 7.4
NOTE: See legend and notes on page 9.
VOLTAGE
RANGE
Min Max RLA LRA FLA FLA kW** FLA MCA MOCP FLA LRA
COMPRESSOR
(each)
OFM
IFM ELECTRIC HEAT* POWER SUPPLY
(each)
—
7.8/10.4
12.0/16.0
18.6/24.8
24.0/32.0
31.8/42.4
—
13.9
16.5
27.8
33.0
41.7
—
7.8/10.4
12.0/16.0
18.6/24.8
24.0/32.0
31.8/42.4
—
13.9
16.5
27.8
33.0
41.7
—
7.8/10.4
12.0/16.0
24.0/32.0
31.8/42.4
37.5/50.0
—
16.5
27.8
33.0
41.7
50.0
—
21.7/ 25.0
33.3/ 38.5
51.6/ 59.7
66.6/ 77.0
88.3/102.0
—
16.7
19.8
33.4
39.7
50.2
—
21.7/ 25.0
33.3/ 38.5
51.6/ 59.7
66.6/ 77.0
88.3/102.0
—
16.7
19.8
33.4
39.7
50.2
—
21.7/ 25.0
33.3/ 38.5
66.6/ 77.0
88.3/102.0
104.4/120.3
—
19.8
33.4
39.7
50.2
60.1
46.1/ 46.1
73.2/ 77.4
87.7/ 94.2
110.6/120.7
129.4/142.4
156.5/173.6
49.2/ 49.2
76.3/ 80.4
90.8/ 97.3
113.7/123.8
132.4/145.4
159.6/176.7
66.0/ 66.0
93.2/ 97.3
107.7/114.2
149.3/162.3
176.4/193.5
196.5/186.3
22.8
43.7
47.5
64.5
72.4
85.5
25.9
46.7
50.6
67.6
75.5
88.6
33.5
58.2
75.2
83.1
96.2
93.6
50/ 50††
80/ 80
90/100
125/125
150/150
175/175
25††
45††
50††
70
80
90
50/ 50††
80/ 90
100/100
125/125
150/150
175/200
30††
50††
60††
70
80
90
70/ 70
100/100
110/125
150/175
200/200
200/200
35††
60††
80
90
100
100
MINIMUM UNIT
DISCONNECT
SIZE†
271/271
49/ 49
293/296
74/ 78
305/310***
88/ 94
24
44
47
63
70
82
53/ 53
78/ 81
91/ 97
27
47
50
66
73
85
70/ 70
95/ 99
36
58
74
81
93
105
323/331***
338/348***
360/373***
305/305
327/330
339/344***
357/365***
372/382***
394/407***
365/365
387/390***
398/403***
431/442***
453/467***
469/485***
109/118
126/138
159/167
112/121
129/141
154/170
109/115
147/159
172/188
190/209
136
152
155
169
175
186***
158
174
177
191***
197
208
183
203
217
223***
234***
243***
—8—
LEGEND AND NOTES FOR TABLES 3A-3D
LEGEND
FLA — Full Load Amps
HACR — Heating, Air Conditioning
IFM — Indoor Fan Motor
LRA — Locked Rotor Amps
MCA — Minimum Circuit Amps
MOCP — Maximum Overcurrent
NEC — National Electrical Code
OFM — Outdoor-Fan Motor
RLA — Rated Load Amps
*Heaters are field installed only.
†Minimum unit disconnect size is used to determine minimum discon-
nect per NEC.
**Heater capacity (kW) is based on heater voltage of 208 v, 240 v,
480 v. If power distribution voltage to unit varies from rated heater
voltage, heater kW will vary accordingly.
††Fuse or HACR circuit breaker.
***Factory-installed disconnect is not available for these units when
electric heat package is installed.
NOTES:
1. In compliance with NEC requirements for multimotor and combina-
2. Unbalanced 3-Phase Supply Voltage
and Refrigeration
Protection
tion load and equipment (refer to NEC Articles 430 and 440), the
overcurrent protective device for the unit shall be fuse or HACR
breaker.
Never operate a motor where a phase imbalance in supply voltage
is greater than 2%.
cent of voltage imbalance.
% Voltage Imbalance
= 100 x
max voltage deviation from average voltage
Use the following formula to determine the per-
average voltage
Example: Supply voltage is 460-3-60.
AB = 452 v
BC = 464 v
AC = 455 v
Average Voltage =
Determine maximum deviation from average voltage:
(AB) 457 – 452 = 5 v
(BC) 464 – 457 = 7 v
(AC) 457 – 455 = 2 v
Maximum deviation is 7 v.
Determine percent of voltage imbalance:
% Voltage Imbalance = 100 x
= 1.53%
This amount of phase imbalance is satisfactory as it is below the
maximum allowable 2%.
IMPORTANT: If the supply voltage phase imbalance is more than
2%, contact your local electric utility company immediately.
3. Non-fused disconnect switch cannot be used when rooftop unit
electrical ratings exceed 80 amps.
452 + 464 + 455
3
1371
=
3
= 457
7
457
—9—
B. Field Control Wiring
Install a Bryant-approved accessory thermostat assembly
according to installation instructions included with the
accessory. Locate the thermostat assembly on a solid wall in
the conditioned spac e to sense average temperature in accordance with thermostat installation instructions.
NOTE: If using a Bryant elect ronic therm ostat, set th e thermostat configuration for “non-heat pump operation.” This
family of products does not require an “O” terminal to energize the reversing valve.
Route the therm ostat ca ble or eq uivale nt singl e leads of colored wire from the subbase terminals to the low-voltage connections on the unit (shown in Fig. 7) as described in Steps 1
through 4 below.
NOTE: For wire runs up to 50 ft, use no. 18 AWG (American
Wire Gage) insulated wire (35 C minimum). For 51 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 directl y c onnect ed to
the thermostat and will require a junction box and splice at
the thermostat.
1. If the unit is mounted on roof curb and accessory
thru-the-curb service plate connection is used, route
wire through the connection plate.
2. Pass control wires throug h the hole provided on the
unit (see connection D in Connection Sizes table
Fig. 5).
3. Feed wi re through the racew ay bu ilt into the co rner po st
to the 24-v barrier located on the left side of the control
box. See Fig. 8. The raceway provides the UL required
clearance between the high-and low-voltage wiring.
4. Connect the thermostat wires to the screw termina ls
of the low-voltage connector (se e Fig. 7).
NOTE: If thru-the-bottom power connections are used refer
to the accessory installation instructions for information on
power wiring. Refer to Fig. 5 for drilling holes in the
basepan.
C. Defrost Board
The defrost board timer cycle is set to 30 minutes. To change
the cycle time, remove the wire from defrost board connected
to the 30 minute quick-connect. See Fig. 9. Connect the wire
to the 50 to 90 minute quick-connects on the defrost board,
depending on the desired defrost time.
D. Heat Anticipator Settings
For units with electric heat, set heat anticipator settings as
shown in Table 4.
VI. STEP 6 — ADJUST FACTORY-INSTALLED OPTIONS
A. Disconnect Switch
The optional disconnect switch is non-fused. The switch can
be locked in plac e for safety pur poses. The disconn ect has a
maximum rating of 80 amperes and cannot be used if rooftop
electrical rating exceeds 80 amperes.
B. Manual Outdoor-Air Damper
The outdoor-air hood and screen are attached to the basepan
at the bottom of the unit (for shipping).
Assembly:
1. Determine the amount of ventilation requi red for the
building. Record the amount for use in Step 8.
2. Remove the filter access panel by raising the panel
and swinging it outward. The panel is now disengaged from the track and can be removed. No tools
are required to remove the filter access panel.
Remove the outdoor-air opening panel. Save panels
and screws. See Fig. 10.
3. Separate the hood and screen from the basepan by
removing the screws and brackets securing them.
Save all screws and discard brackets.
4. Replace the ou tdoor air opening pa nel.
5. Place the hood on the front of the outdoor air opening
panel. See Fig. 11 for hood details. Secure the top of
the hood with the 6 screws removed in Step 3. See
Fig. 12.
6. Remove and save the 8 scre ws (4 on each side) from
the sides of the manual outdoor-air damper.
7. Align the screw holes on the hood with the screw
holes on the sid e of manual outdoor-air dam per. See
Fig. 11 and 12. Secure the hood with the 8 screws
from Step 6.
8. Adjust the minimum position setting of the damper
blade by adjusting the manual outdoor-air adjustment screws on the front of the damper blade. See
Fig. 10. Slide the blade vertically until it is in the
appropriate position determined by Fig. 13. Tighten
the screws.
9. Remove and save the screws cu rrent ly o n the si des of
the hood. Insert the screen. Secure the screen to the
hood using the screws. See Fig. 12.
10. Replace the filter access panel. Ensure that the filter
access panel slides along the tracks and is securely
engaged.
UNIT
Heater kW*
10.4, 16.0 0.3 NA NA
549B
*kW is based on 240 or 480 v.
24.8, 32.0 0.6 0.3 0.3
42.4, 50.0 0.9 0.6 0.3 41.7, 50.0 0.6 0.3 0.3
Table 4 — Heat Anticipator Settings
208/230 460
Configuration
1-Stage
2-Stage
Stage 1 Stage 2 Stage 1 Stage 2
UNIT VOLTAGE
Heater kW*
13.9, 16.5
27.8, 33.0
—10—
Configuration
1-Stage
0.3 NA NA
2-Stage
COOL STAGE 1
FAN
HEAT STAGE 1
COOL STAGE 2
HEAT STAGE 2
24 VAC HOT
24 VAC COM
N/A
OUTDOOR AIR
SENSOR
THERMOSTAT DIPSWITCH SETTINGS
ON
OFF
B
A
C
Y1/W2
G
W/W1
Y/Y2
O/W2
R
C
S1
S2
D
R
G
Y1
Y2
W1
W2
C
IPD/X
WIRE
CONNECTIONS
TO
LOW-VOLTAGE
SECTION
(CONNECTION
BOARD)
LEGEND
Field Wiring
NOTE: Underlined letter indicates active thermostat output when configured for A/C operation.
Fig. 7 — Low-Voltage Connections With or
Without Economizer or Two-Position Damper
Fig. 9 — Defrost Board
DISCONNECT
BOARD
DISCONNECT
SWITCH
(OPTIONAL)
RACEWAY
COMPRESSOR
NO. 2
CONVENIENCE
OUTLET
HOLE IN
END
PANEL
COMPRESSOR NO. 1
Fig. 8 — Typical Field Control Wiring Raceway
FILTER
ACCESS
PANEL
OUTDOOR AIR
OPENING
PANEL
SCREWS
(SIDE)
MANUAL
OUTDOOR-AIR
ADJUSTMENT
SCREWS
DAMPER
BLADE
Fig. 10 — Damper Panel with Manual
Outdoor-Air Damper Installed
—11—
SCREW
HOLES
(TOP)
Fig. 11 — Outdoor-Air Hood Details
C. Optional EconoMi$er IV
See Fig. 14 for EconoMi$er IV component locations.
NOTE: These instructions are for installing the optional
EconoMi$er IV. Refer to the accessory EconoMi$er IV in stal lation instr uctions when field inst alling an EconoMi$er I V
accessory.
1. To remove the existing unit filter access panel, raise
the panel and swing the bottom outward. The panel is
now disengaged from the track and can be removed.
See Fig. 15.
2. The box with the economizer hood components is
shipped in the compa rtment behind the economizer.
The EconoMi$er IV controller is mounted on top of
the EconoMi$er IV in the position shown in Fig. 14.
To remove the component box f rom it s shippi ng posi tion, remove the screw holding the hood box bracket
to the top of the economizer. Slide the hood box out of
the unit. See Fig. 16.
IMPORTANT: If the power exhaust accessory is to be
installed on the unit, the hood shipped with the unit will not
be used and must be discarded. Save the aluminum filter
for use in the power exhaust hood assembly.
3. The indoor coi l acc ess pan el wi ll b e us ed a s the to p of
the hood. Remove the screws along the sides and
bottom of the indoor coil access panel. See Fig. 17.
4. Swing out indoor coil access panel and insert the hood
sides under the panel (hood top). Use the screws provided to attach the hood sides to the hood top. Use screws
provided to attach the hood sides to the unit. See Fig. 18.
HOOD
HOOD
SCREEN
LOCATION
(SCREEN
NOT
SHOWN)
Fig. 12 — Optional Manual Outdoor-Air
Damper with Hood Attached
ECONOMI$ER IV
CONTROLLER
WIRING
HARNESS
ACTUATOR
OUTSIDE AIR
TEMPERATURE SENSOR
LOW AMBIENT
SENSOR
Fig. 14 — EconoMi$er IV Component Locations
FILTER ACCESS PANEL
Fig. 13 — Outdoor Air Damper Position Setting
INDOOR COIL ACCESS PANEL
Fig. 15 — Typical Access Panel Locations
—12—
x
o
B
d
o
o
H
Fig. 16 — Hood Box Removal
HOOD BOX
BRACKET
INDOOR
COIL
ACCESS
PANEL
CAULK
HERE
SIDE
PANEL
TOP
SIDE
PANEL
INDOOR
COIL
ACCESS
PANEL
5. Remove the shipping tape holding the economizer
barometric relief damper in place.
6. Insert the hood divider between the hood sides. See
Fig. 18 and 19. Secure hood divider with 2 screws on
each hood side. The hood di vider is also used as the
bottom filter rack for the aluminum filter.
7. Open the filter clips which are located underneath
the hood top. Insert the aluminum filter into the
bottom filter rack (hood divider) . Push the filter into
position pa st th e op en fi lter c lip s . Cl ose the f ilt er c lip s
to lock the filter into place. See Fig. 19.
8. Caulk the ends of the joint between the unit top panel
and the hood top. See Fig. 17.
9. Replace the filter access panel.
10. Install all EconoMi$ er IV ac ces sori es. Ec onoM i$e r I V
wiring is shown in Fig. 20.
Barometric flow capacity is shown in Fig. 21. Outdoor air
leakage is shown in Fig. 22. Return air pressure drop is
shown in Fig. 23.
D. EconoMi$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 outdoo r-air temperature.
The outdoor-air temperature is used to determine when the
EconoMi$er IV can be used for free cooling. The sensor is
factory-installed on the EconoMi$er IV in the outdoor airstream. See Fig. 14. The operating range of temperature
measurement is 40 to 100 F.
Supply Air Temperature (SAT) Sensor
The supply air temperature sensor is a 3 K thermistor
located at the inlet of the indoor fan. See Fig. 24. This sensor
is factory installed. The operating range of temperature
measurement is 0° to 158 F. See Table 5 for sensor
temperature/resistance values.
The temperature sensor l ooks like an eyelet terminal with
wires running to it. The sensor is located in the “crimp end”
and is sealed from moisture.
Outdoor Air Lockout Sensor
The Economi$er IV is equipped with an ambient tempera-
ture lockout switch located in the outdoor airstream which is
used to lock out the compressors below a 42 F ambient temperature. See Fig. 14.
Fig. 17 — Indoor Coil Access Panel Relocation
LEFT
HOOD
SIDE
B
24 9/16”
HOOD DIVIDER
SCREW
40 3/8”
Fig. 18 — Outdoor-Air Hood Construction
22 1/4”
DIVIDER
OUTSIDE
AIR
HOOD
CLEANABLE
BAROMETRIC
RELIEF
ALUMINUM
FILTER
FILTER
Fig. 19 — Filter Installation
TOP
PANEL
INDOOR COIL
ACCESS PANEL
FILTER
CLIP
—13—
FOR OCCUPANCY CONTROL
REPLACE JUMPER WITH
FIELD-SUPPLIED TIME CLOCK
LEGEND
DCV— Demand Controlled Ventilation
IAQ — Indoor Air Quality
LA — Low Ambient Lockout Device
OAT — Outdoor-Air Temperature
POT— Potentiometer
RAT— Return-Air Temperature
Potentiometer Defaults Settings:
Power Exhaust Middle
Minimum Pos. Fully Closed
DCV Max. Middle
DCV Set Middle
Enthalpy C Setting
Table 5 — Supply Air Sensor
Temperature/Resistance Values
TEMPERATURE (F) RESISTANCE (ohms)
–58 200,250
–40 100,680
–22 53,010
–4 29,091
14 16,590
32 9,795
50 5,970
68 3,747
77 3,000
86 2,416
104 1,597
122 1,080
140 746
158 525
176 376
185 321
194 274
212 203
230 153
248 116
257 102
266 89
284 70
302 55
NOTES:
1. 620 ohm, 1 watt 5% resistor should be removed only when using differential
enthalpy or dry bulb.
2. If a separate field-supplied 24 v transformer is used for the IAQ sensor power
supply, it cannot have the secondary of the transformer grounded.
3. For field-installed remote minimum position POT, remove black wire jumper
between P and P1 and set control minimum position POT. to the minimum
position.
Fig. 20 — EconoMi$er IV Wiring
2500
2000
1500
1000
500
FLOW IN CUBIC FEET PER MINUTE (cfm)
30
25
20
15
10
5
0
FLOW IN CUBIC FEET PER MINUTE (cfm)
Fig. 22 — Outdoor Air Damper Leakage
0
0.05
0.15
STATIC PRESSURE (in. wg)
0.25
Fig. 21 — Barometric Flow Capacity
0.13 0.20 0.22 0. 25 0.30 0.35 0.40 0.45 0.50
STATIC PRESSURE (in. wg)
—14—
6000
5000
4000
3000
2000
1000
0
0.05 0.10 0.15 0. 20 0.25 0.30 0.35
FLOW IN CUBIC FEET PER MINUTE (cfm)
STATIC PRESSURE (in. wg)
Fig. 23 — Return Air Pressure Drop
SUPPLY AIR
TEMPERATURE
SENSOR
MOUNTING
LOCATION
SUPPLY AIR
TEMPERATURE
SENSOR
Fig. 24 — Supply Air Sensor Location
E. EconoMi$er IV Control Modes
Determine the EconoMi$er IV control mode before set up of the
control. Some modes of operation may require different sensors.
Refer to Table 6. The EconoMi$er IV is su pplied from the fa ctory with a supply air temperature sensor and an outdoor air
temperature sensor. This allows for operation of the
EconoMi$er IV with outdoor air dry bulb changeover control.
Additional accessories can be added to allow for different
types of changeover control and operation of the EconoMi$er
IV and unit.
Table 6 — EconoMi$er IV Sensor Usage
ECONOMI$ER IV WITH OUTDOOR AIR
APPLICATION
Outdoor Air Dry Bulb
Differential Dry Bulb CRTEMPSN002A00*
Single Enthalpy HH57AC078
Differential Enthalpy
for DCV Control
CO
2
using a Wall-Mounted
Sensor
CO
2
CO
for DCV Control
2
using a Duct-Mounted
CO2 Sensor
*CRENTDIF004A00 and CRTEMPSN002A00 accessories are used on many
different base units. As such, these kits may contain parts that will not be
needed for installation.
†33ZCSENCO2 is an accessory CO
**33ZCASPCO2 is an accessory aspirator box required for duct-mounted
applications.
††CRCBDIOX005A00 is an accessory that contains both 33ZCSENCO2 and
33ZCASPCO2 accessories.
33ZCSENCO2†
33ZCASPCO2**
DRY BULB SENSOR
Accessories Required
None. The outdoor air dry bulb sensor
is factory installed.
HH57AC078
and
CRENTDIF004A00*
33ZCSENCO2
and
sensor.
2
CRCBDIOX005A00††
OR
Outdoor Dry Bulb Changeover
The standard controller is shipped from the factory configured
for outdoor dry bulb changeover control. The outdoor air and
supply air tempe rature sensor s are included as standard. For
this control mode, the outdoor temp erature is compa red to an
adjustable set point sel ected on the control. If the outdoor-air
temperature is above the set point, the EconoMi$er IV will
adjust the outdoor-air dampers to minimum position. If the
outdoor-air temperature is below the set point, the posi tion of
the outdoor-air dampers will be con trol led to provi de free coo ling using outdoor air. When in this mode, the LED next to the
free cooling set point potentiometer will be on. The changeover
temperature set point is controlled by the free cooling set point
potentiometer located on the cont rol. See Fig. 25. The scale on
the potentiometer is A, B, C, and D. See Fig. 26 for the corresponding te mp e r ature changeover v a lue s.
Differential Dry Bulb Control
For differential dry bulb control the standard outdoor dry
bulb sensor is used in conjunction with an additional accessory dry bulb sensor (part number CRTEMPSN002A00). The
accessory senso r must be mounted in the return airstream.
See Fig. 27. Wiring is provided in th e EconoMi$e r IV wiring
harness. See Fig. 20.
In this mode of operation, the outdoor-air temperature is
compared to the return-air temper ature and the lower temperature airstream is used for cooling. When using this mode
of changeover control, turn the enthalpy set point potentiometer fully clockwise to the D setting. See Fig. 25.
Outdoor Enthalpy Changeover
For enthalpy control, accessory enthalpy sensor (part num-
ber HH57AC078) is required. Replace the standard outdoor
dry bulb temperature sensor with the accessory enthalpy
sensor in the same mounting location. See Fig. 14. When the
outdoor air enthalpy rises above the outdoor enthalpy
changeover set point, the outdoor-air damper moves to its
minimum position. The outdoor enthalpy changeover set
point is set with the ou tdoor enthalpy set poi nt potentiometer on the EconoMi$er IV controller. The set points are A, B,
C, and D. See Fig. 28. The factory-installed 620-ohm jumper
must be in place across terminals SR and SR+ on the
EconoMi$er IV controller. See Fig. 14 and 29.
Differential Ent halpy Control
For differential enthalpy control, the EconoMi$ er IV co ntrol -
ler uses two enthalpy sensors (HH57AC078 and
CRENTDIF004A00), one in the outside air and one in the
return air duct. The EconoMi$er IV controller compares the
outdoor air enthalpy to the return a ir enthalpy to de termine
EconoMi$er IV use. The controller selects the lower enthalpy
air (return or outdoor) for cooling. For example, when the
outdoor air has a lower enthalpy than the return air, the
EconoMi$er IV opens to bring in outdoor air for free cooling.
Replace the standard outside air dry bulb temperature sensor with the acc essor y enth alpy senso r in th e same mou nting
location. See Fig. 14. Mount th e return air enthalpy sen sor
in the return air duct. See Fig. 27. Wiring is provide d in the
EconoMi$er IV wiring harness. See Fig. 20. The outdoor
enthalpy changeover set point is set with the outdoor
enthalpy set point potentiometer on the EconoMi$er IV
controller. When using this mode of changeover control, turn
the enthalpy set point potentiometer fully clockwise to the D
setting.
—15—
Fig. 25 — EconoMi$er IV Controller Potentiometer
and LED Locations
19
LED ON
mA
14
18
17
16
15
13
12
11
10
9
40
LED OFF
45
D
50
60
55
DEGREES FAHRENHEIT
LED ON
C
LED OFF
65
70
LED ON
LED OFF
75
B
LED ON
A
LED OFF
100
90
95
85
80
Fig. 26 — Outside Air Temperature Changeover Set Points
ECONOMI$ER IV
CONTROLLER
ECONOMI$ER IV
GROMMET
RETURN AIR
SENSOR
RETURN DUCT
(FIELD-PROVIDED)
Fig. 27 — Return Air Temperature or Enthalpy
Sensor Mounting Location
Indoor Air Quality (IAQ) Sensor Input
The IAQ input can be used for demand control ventilation
control based on the l evel of CO
measured in the space or
2
return air duct.
Mount the accessory IAQ s ensor according to ma nufacturer
specifications. The IAQ sensor should be wired to the
AQ and AQ1 terminals of the controller. Adjust the DCV
potentiometers to correspond to the DCV voltage output of
the indoor air quality sensor at the user-determined set
point. See Fig. 30.
If a separate field-supplied transformer is used to power the
IAQ sensor, the sensor must not be grounded or the
EconoMi$er IV control board will be damaged.
Exhaust Set Point Adjustment
The exhaust set point will determine when the exhaust fan
runs based on d am p er po sit i on ( if accessory power exhaust is
installed). The set point is modified with the Exhaust Fan
Set Point (EXH SET) potentiometer. See Fig. 25. The set
point represents the damper position above which the
exhaust fans will be turned on. When there is a call for
exhaust, the EconoMi$er IV controller provides a 45 ±
15 second delay before exhaust fan activation to allow the
dampers to open. This delay allows the damper to reach the
appropriate position to avoid unneces sary fan overload.
Minimum Position C o ntrol
There is a minimum damper position potentiometer on the
EconoMi$er IV c o nt ro ll er. See Fig. 25. The minimum damper
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 compound) 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 clock wi se.
Adjust the minimum position potentiometer to allow the
minimum amount of outdoor air, as required by local codes,
to enter the building. Make minimum position adjustments
with at least 10 F temperature difference betwee n the outdoor and return-air temperatures.
To determine the minimum position setting, perform the
following procedure:
1. Calculate the appropriate mixed air temperature
using the following formula:
OA
(T
T
x
O
O
)+ (TR x
100 100
= Outdoor-Air Temperature
RA
) = T
M
OA = Percent of Outdoor Air
= Return-Air Temperature
T
R
RA = Percent of Return Air
TM = Mixed-Air Temperature
As an example, if local codes require 10% outdoor air
during occupied conditions, outdoor-air temperature
is 60 F, and return-air temperature is 75 F.
(60 x .10) + (75 x .90) = 73.5 F
2. Disconnect the supply air sensor from terminals T
and T1.
3. Ensure that the factory-installed jumper is in place
across terminals P and P1. If remote damper positioning is being used, make sure that the terminals
are wired according to Fig. 20 and that the minimum
position potentiometer is turned fully clockwise.
4. Connect 24 vac across terminals TR and TR1.
5. Carefully adjust the minimum position potentiometer
until the measured mixed-air temperature matches
the calculated value.
6. Reconnect the supply-air sensor to terminals T and T1.
—16—
CONTROL
CURVE
4
1
2
1
A
B
C
D
8
1
6
1
CONTROL POINT
APPROX. °F (°C)
AT 50% RH
73 (23)
70 (21)
67 (19)
63 (17)
P
L
HA
26
NT
E
4
2
2
2
0
2
40
(4)
35
(2)
Y
—
85
(29)90(32)95(35)
46
4
4
42
40
IR
8
3
Y A
6
DR
3
D
N
U
4
3
PO
R
32
E
P
TU
30
B
28
60
(16)
55
(13)
B
50
C
(10)
45
D
(7)
70
(21)
0
0
1
65
(18)
A
80
(27)
75
(24)
0
9
80
70
60
50
0
4
TIVE HUM
RELA
0
3
100
(38)
IDITY
20
(%
105
110
(41)
(43)
)
0
1
N1
P1
T1
AQ1
SO+
SR+
D
35
40
45
50
55
60
65
70
75
80
(2)
(4)
(7)
(10)
(13)
(16)
(18)
(21)
(24)
85
(27)
(29)90(32)95(35)
100
(38)
105
(41)
110
(43)
HIGH LIMIT
CURVE
A
B
C
APPROXIMATE DRY BULB TEMPERATURE— °F (°C)
Fig. 28 — Enthalpy Changeover Set Points
CO SENSOR MAX RANGE SETTING
2
TR1
EXH
2V 10V
EXH
Open
2V 10V
DCV
2V 10V
Free
Cool
B
A
DCV
DCV
C
D
Set
Min
Pos
Max
Set
N
P
T
AQ
SO
SR
TR
24
24 Vac
Vac
COM
HOT
_
+
12
5
4
3
EF1
EF
6000
5000
4000
3000
2000
1000
RANGE CONFIGURATION (ppm)
0
Fig. 30 — CO
2345678
DAMPER VOLTAGE FOR MAX VENTILATION RATE
Sensor Maximum Range Setting
2
800 ppm
900 ppm
1000 ppm
1100 ppm
Fig. 29 — EconoMi$er IV Control
—17—
Remote control of the EconoMi$er IV damper is desirable
when requiring additional temporary ventilation. If a
field-supplied remote potentiometer (Honeywell part number S963B1128) is wired to the E co no Mi$er IV controller, the
minimum position of the damper can be controlled from a
remote location.
To control the minimum damper position remotely, remove
the factory-insta lled jumper on the P and P1 terminals on
the EconoMi$er IV controller. Wire the field-supplied potentiometer to the P and P1 termina ls on the EconoMi$er IV
controller. See Fig. 29.
Damper Movement
Damper movement from full open to full closed (or vice
1
versa) takes 2
/2 minutes.
Thermostats
The EconoMi$er IV control works with conventional thermo-
stats that have a Y1 (cool stage 1), Y2 (cool stage 2), W1
(heat stage 1), W2 (heat stage 2), and G (fan). The
EconoMi$er IV control does not support space temperature
sensors. Connections are made at the thermostat terminal
connection board located in the main control box.
Occupancy Control
The factor y default configuration for the EconoMi$er IV con-
trol is occupied mode. Occupied status is provided by the
black jumper from terminal TR to terminal N. When unoccupied mode is desired, install a field-supplied timeclock function in place of the jumper between TR and N. See Fig. 20.
When the timeclock contacts are clos ed, the EconoMi$e r IV
control will be in occupied mode. When the timeclock contacts are open (r emoving the 24-v signal from terminal N),
the EconoMi$er IV will be in un occupied mode.
Demand Controlled Ventilation (DCV)
When using the Ec onoM i $er I V for dem a nd cont roll e d ven ti -
lation, 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 b e eva lua ted for de sig n c ondi tions. T he maxi mum
damper position must be calculated to provide the desired
fresh air.
Typically the maximum ventilation rate will be about 5 to
10% more than the typical cfm required per person, using
normal outside air design criteria.
A proportional anticipatory strategy should be taken with
the following conditions: a zone with a large area, varied
occupancy, and equipmen t that cannot exceed the required
ventilation rate at design conditions. Exceeding the required
ventilation rate mea ns the equipmen t can conditi on air at a
maximum ventilation rate that is great er than the required
ventilation rate for maximum occupancy. A proportionalanticipatory strategy will cause the fresh air supplied to
increase as the room CO
CO
set point has not been reached. By the time the CO
2
level increases even though the
2
level reaches the set point, the damper will be at maximum
ventilation and should maintain the set point.
In order to have the CO
sensor control the economizer
2
damper in this manner, first determine the damper voltage
output for minimum or base ventilation. Base ventila tion is
the ventilation required to remove contaminants during
unoccupied periods. The following equation may be u sed 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.
OA
(T
T
x
O
O
)+ (TR x
100 100
= Outdoor-Air Temperature
RA
) = T
M
OA = Percent of Outdoor Air
TR = Return-Air Temperature
RA = Percent of Return Air
TM = Mixed-Air Temperature
Once base ventilation has been determined, set the minimum damper position potentiometer to the correct position.
The same equation can be used to determine the occupied or
maximum ventilation rate to the building. For example, an
output of 3.6 volts to th e ac t uato r provi des a ba se ve ntil at io n
rate of 5% and an output of 6.7 volts provides the maximum
ventilation rate of 20% (or base plus 15 cfm per person). Use
Fig. 30 to determine the maximum setting of the CO
For example, a 1100 ppm set point relates to a 15 cfm per
person design. Use the 1100 ppm curve on Fig. 30 to find the
point when the CO
sensor output will be 6.7 volts. Line up
2
the point on the graph with the left side of the chart to determine that the range configuration for the CO
2
be 1800 ppm. The Eco noMi$er IV control ler will output the
6.7 volts f rom the CO
sensor to the actuator when the C O
2
concentration in the spac e is at 1100 ppm . The DC V set po int
may be left at 2 volts since the CO2 sensor voltag e will be
ignored by the EconoMi$er IV controller until it rises above
the 3.6 volt setting of the minimum position potentiometer.
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 maxim um
position as this can result in over-ventilation to the space
and potential high-humidity levels.
CO
Sensor Configuration
2
The CO2 sensor has preset standard voltage settings that
can be selected anytime afte r the sensor is pow ered up. See
Table 7.
Use setting 1 or 2 for Bryant equipment. See Table 7.
1. Press Clear and Mode buttons. Hold at least 5 seconds until the sensor enters the Edit mode.
2. Press Mode twice. The STDSET Menu will appear.
3. Use the Up/Down button to select the preset number.
See Table 7.
4. Press Enter to lock in the selection.
5. Press Mode to exit and resume normal operation.
The custom settings of the CO
sensor can be changed any-
2
time after the sensor is en ergized. Follow the steps belo w to
change the non-standard settings:
1. Press Clear and Mode buttons. Hold at least 5 sec-
2
onds until the sensor enters the Edit mode.
2. Press Mode twice. The STDSET Menu will appear.
3. Use the Up/Down button to toggle to the NONSTD
menu and press Enter.
4. Use the Up/Down button to toggle through each of
the nine variables, starting with Altitude, until the
desired setting is reached.
5. Press Mode to move through the variables.
6. Press Enter to lock in the selection, then press Mode
to continue to the next variable.
sensor.
2
sensor sho uld
2
—18—
Table 7 — CO2 Sensor Standard Settings
SETTING EQUIPMENT OUTPUT
1
Interface w/Standard
2 Proportional Any
Building Control System
3 Exponential Any
4
5 Proportional 20
Economizer
6 Exponential 15
7 Exponential 20
8 Health & Safety Proportional —
Parking/Air Intakes/
9
Loading Docks
LEGEND
ppm — Parts Per Million
Proportional Any
Proportional 15
Proportional —
VENTILATION
RATE
(cfm/Person)
Dehumidification of Fresh Air with DCV Control
Information from ASHRAE indicates that the largest humid-
ity load on any zone is the fresh air introduced. For some
applications, an energy recovery unit is added to reduce the
moisture content of the fresh air being brought into the
building when the enthalpy is high. In most cases, the normal heating and coolin g processe s are more than ade quate t o
remove the humidity loads for most commercial applications.
If normal rooftop heating and cooling operation is not adequate for the outdoor humidity level, an energy recovery unit
and/or a dehum idification opti on should be considered.
VII. STEP 7 — ADJUST INDOOR-FAN SPEED
Adjust the indoor -fa n spee d to me et j obsi te requir eme nts.
For units with electric heat, required minimum cfm is
2250 for 549B090 and 102 and 3000 for 549B120 with the
following except io ns :
UNIT
549B
120
UNIT
VO LTAGE
208/230 42.4 Horizontal 3200
208/230 50.0 Horizontal 3200
460 50.0
HEATER
kW
UNIT
CONFIG-
URATION
Horizontal
or
Vertical
REQUIRED
MINIMUM
CFM
3200
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
0-10V
4-20 mA
0-10V
4-20 mA
CO
CONTROL RANGE
2
(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
0-9999 5000 500
0-2000 700 50
OPTIONAL
RELAY SETPOINT
(ppm)
RELAY
HYSTERESIS
(ppm)
Table 8 shows indoor-fan moto r data . Table 9 s hows fa n rpm
at motor pulley settings for standard and alternate motors.
Tables 10 and 11 show FIOP/accessory static pressure. Refer
to Tables 12-23 to determine fan speed settings. Fan motor
pulleys are factory set for speed shown in Table 1.
To change fan speed s:
1. Shut off the unit power supply and tag disconnect.
2. Loosen belt by loosening fan motor mounting nuts
See Fig. 31 and 32.
3. Loosen the movable pulley flange setscrew (see
Fig. 33).
4. Screw the movable flange toward the fixed flange to
increase speed and away from the fixed flange to
decrease speed. Increasing fan speed increases the
load on the motor. Do not exceed the maximum speed
specified in Table 1.
5. Set the movable flange at the nea rest keyway of the
pulley hub and tighten the setscrew. (See Table 1 for
speed change for each full turn of the pulley flange.)
To align fan and motor pulleys:
1. Loosen the fan pulley setscrews.
2. Slide the fan pulley along the fan shaft.
3. Make angular alignm ent by loo se ning the mo t or fro m
the mounting plate.
—19—
To adjust belt tension:
1. Loosen the fan motor mounting plate nuts.
2. Size 090 and 102 — Slide the motor mounting plate
away from the fan scroll for prop er belt tension (5/8-in.
deflection with 8 to 10 lb of force) and tighten the
mounting nuts (see Fig. 31).
Size 120 — Slide the motor mounting plate down-
5
ward to tighten belt tension (
/8-in. deflection with 5
to 10 lb of force). Secure the motor mounting plate
nuts. See Fig. 32.
3. Adjust the bolt and nut on the mounting plate to
secure the motor in a fixed position.
MOTOR MOUNTING
PLATE NUTS
Fig. 32 — Typical Belt-Drive Motor
Mounting for Size 120
Fig. 31 — Typical Belt-Drive Motor
Mounting for Sizes 090 and 102
Fig. 33 — Indoor-Fan Pulley Adjustment
Table 8 — Indoor-Fan Motor Performance
UNIT
549B
090 and
102
120
LEGEND
Bhp — Brake Horsepower
*Extensive motor and electrical testing on these units ensures that the full horsepower range of the motors
can be utilized with confidence. Using fan motors up to the horsepower ratings shown in this table will not
result in nuisance tripping or premature motor failure. Unit warranty will not be affected.
INDOOR-FAN
MOTOR
Standard
High Static
Standard
High Static
UNIT
VOLTAGE
208/230
460 3.9
208/230
460 5.5
208/230
460 5.5
208/230
460 8.5
MAXIMUM ACCEPTABLE
CONTINUOUS BHP*
2.90 2615
4.20 3313
3.70 3313
5.25 4400
MAXIMUM ACCEPTABLE
OPERATING WATTS
MAXIMUM
AMP DRAW
8.6
11.7
11.7
17.3
—20—
Table 9 — Fan Rpm at Motor Pulley Settings*
UNIT
549B
1
0
/
2
11
1
/
2
MOTOR PULLEY TURNS OPEN
22
1
/
2
33
1
/
2
44
1
/
2
55
1
/
2
090† 950 930 905 885 865 840 820 795 775 750 730 — —
090** 1080 1060 1035 1015 990 970 950 925 905 880 860 — —
102† 1085 1061 1036 1012 987 963 938 914 889 865 840 — —
102** 1080 1058 1036 1014 992 970 948 926 904 882 860 — —
120† 1080 1060 1035 1015 990 970 950 925 905 880 860 — —
120** 1130 1112 1087 1062 1037 1212 987 962 937 912 887 862 830
*Approximate fan rpm shown.
†Indicates standard motor and drive package.
**Indicates high-static motor and drive package.
Table 10 — Accessory/FIOP Electric Heaters Static Pressure* (in. wg) — 549B090-120
COMPONENT
2250 2500 3000 3500 4000 4500 5000 5500 6000 6250
1 Heater Module 0.02 0.03 0.05 0.07 0.08 0.10 0.12 0.14 0.16 0.17
2 Heater Modules 0.03 0.05 0.07 0.09 0.12 0.14 0.16 0.19 0.21 0.20
LEGEND
FIOP — Factory-Installed Option
*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 tables to determine blower rpm and watts.
CFM
6
Table 11 — Accessory/FIOP EconoMi$er IV Static Pressure* (in. wg)
COMPONENT
2250 2500 2750 3000 3250 3500 3750 4000 4250 4500 4750 5000 5250 6250
Vertical EconoMi$er IV 0.06 0.075 0.09 0.115 0.13 0.15 0.17 0.195 0.22 0.25 0.285 0.325 0.36 —
Horizontal EconoMi$er IV — 0.1 0.125 0.15 0.18 0.21 0.25 0.275 0.3 0.34 0.388 — — —
LEGEND
FIOP — Factory-Installed Option
*The static pressure must be added to external static pressure. The sum and the evaporator entering-air cfm
should be used in conjunction with the Fan Performance tables to determine indoor blower rpm and watts.
CFM
GENERAL FAN PERFORMANCE NOTES
1. Extensive motor and electrical testing on these units ensures that the full
range of the motor can be utilized with confidence. Using fan motors up
to the ratings shown will not result in nuisance tripping or premature
motor failure. Unit warranty will not be affected. For additional information on motor performance refer to Fan Motor Performance, Table 8.
2. Values include losses for filters, unit casing, and wet coils. See Tables 10
and 11 for FIOP/accessory static pressure information.
3. Use of a field-supplied motor may affect wire sizing. Contact your Bryant
representative to verify.
4. Interpolation is permissible. Do not extrapolate.
—21—
Table 12 — Fan Performance 549B090 — Vertical Discharge Units; Standard Motor (Belt Drive)*
AIRFLOW
CFM
2250 511 0.53 492 591 0.73 680 660 0.95 885 722 1.19 1106 779 1.44 1342
2300 519 0.56 518 597 0.76 709 666 0.98 916 727 1.22 1140 784 1.48 1378
2400 534 0.61 571 611 0.82 768 678 1.05 982 739 1.30 1210 795 1.56 1453
2500 550 0.67 629 624 0.89 832 690 1.13 1051 750 1.38 1285 805 1.64 1533
2550 558 0.71 660 631 0.93 866 697 1.17 1088 756 1.42 1324 811 1.69 1574
2600 565 0.74 691 638 0.97 901 703 1.21 1125 762 1.46 1365 816 1.73 1617
2700 581 0.81 758 652 1.04 974 716 1.29 1204 774 1.55 1449 828 1.83 1707
2800 597 0.89 829 667 1.13 1051 729 1.38 1287 786 1.65 1538 839 1.93 1801
2900 613 0.97 905 681 1.22 1133 742 1.48 1376 799 1.75 1632 851 2.04 1900
3000 630 1.06 985 696 1.31 1220 756 1.58 1469 811 1.86 1731 863 2.15 2004
3100 646 1.15 1071 711 1.41 1313 770 1.68 1568 824 1.97 1835 875 2.27 2114
3200 663 1.25 1162 726 1.51 1411 784 1.79 1672 837 2.09 1944 888 2.39 2229
3300 679 1.35 1259 741 1.62 1514 798 1.91 1781 851 2.21 2060 900 2.52 2351
3400 696 1.46 1361 756 1.74 1623 812 2.03 1896 864 2.34 2181 913 2.66 2478
3500 713 1.58 1469 772 1.86 1737 827 2.16 2017 878 2.48 2308 926 2.80 2610
3600 729 1.70 1583 787 1.99 1857 841 2.30 2144 892 2.62 2441 — — —
3700 746 1.83 1703 803 2.13 1985 856 2.44 2277 906 2.77 2580 — — —
3750 755 1.89 1766 811 2.20 2051 864 2.52 2346 913 2.84 2653 — — —
AIRFLOW
CFM
2250 832 1.71 1592 882 1.99 1855 928 2.29 2131 973 2.59 2420 ———
2300 837 1.75 1630 886 2.03 1896 933 2.33 2174 977 2.64 2463 ———
2400 847 1.83 1710 896 2.12 1980 942 2.43 2262 986 2.74 2556 ———
2500 857 1.92 1794 905 2.22 2069 951 2.52 2355 995 2.84 2653 ———
2550 862 1.97 1838 910 2.27 2114 956 2.58 2403 999 2.90 2704 ———
2600 867 2.02 1884 915 2.32 2162 961 2.63 2453 ——————
2700 878 2.12 1978 926 2.42 2261 971 2.74 2556 ——————
2800 889 2.23 2077 936 2.54 2365 981 2.86 2664 ——————
2900 900 2.34 2181 947 2.65 2474 — — — — — — — — —
3000 912 2.46 2290 958 2.78 2588 —————————
3100 923 2.58 2406 969 2.90 2708 —————————
3200 935 2.71 2526 — — — — — — — — — — — —
3300 947 2.84 2652 — — — — — — — — — — — —
3400 ———————————————
3500 ———————————————
3600 ———————————————
3700 ———————————————
3750 ———————————————
Bhp — Brake Horsepower Input to Fan
Watts — Input Watts to Motor
*Motor drive range: 730 to 950 rpm. All other rpms require field-
supplied drive.
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
LEGEND
0.2 0.4 0.6 0.8 1.0
1.2 1.4 1.6 1.8 2.0
EXTERNAL STATIC PRESSURE (in. wg)
EXTERNAL STATIC PRESSURE (in. wg)
NOTES:
1. Boldface indicates a field-supplied drive is required.
2. Maximum continuous bhp is 2.90.
3. See page 21 for general fan performance notes.
—22—
Table 13 — Fan Performance 549B090 — Vertical Discharge Units; High-Static Motor (Belt Drive)*
AIRFLOW
CFM
2250 511 0.53 492 591 0.73 680 660 0.95 885 722 1.19 1106 779 1.44 1342
2300 519 0.56 518 597 0.76 709 666 0.98 916 727 1.22 1140 784 1.48 1378
2400 534 0.61 571 611 0.82 768 678 1.05 982 739 1.30 1210 795 1.56 1453
2500 550 0.67 629 624 0.89 832 690 1.13 1051 750 1.38 1285 805 1.64 1533
2550 558 0.71 660 631 0.93 866 697 1.17 1088 756 1.42 1324 811 1.69 1574
2600 565 0.74 691 638 0.97 901 703 1.21 1125 762 1.46 1365 816 1.73 1617
2700 581 0.81 758 652 1.04 974 716 1.29 1204 774 1.55 1449 828 1.83 1707
2800 597 0.89 829 667 1.13 1051 729 1.38 1287 786 1.65 1538 839 1.93 1801
2900 613 0.97 905 681 1.22 1133 742 1.48 1376 799 1.75 1632 851 2.04 1900
3000 630 1.06 985 696 1.31 1220 756 1.58 1469 811 1.86 1731 863 2.15 2004
3100 646 1.15 1071 711 1.41 1313 770 1.68 1568 824 1.97 1835 875 2.27 2114
3200 663 1.25 1162 726 1.51 1411 784 1.79 1672 837 2.09 1944 888 2.39 2229
3300 679 1.35 1259 741 1.62 1514 798 1.91 1781 851 2.21 2060 900 2.52 2351
3400 696 1.46 1361 756 1.74 1623 812 2.03 1896 864 2.34 2181 913 2.66 2478
3500 713 1.58 1469 772 1.86 1737 827 2.16 2017 878 2.48 2308 926 2.80 2610
3600 729 1.70 1583 787 1.99 1857 841 2.30 2144 892 2.62 2441 939 2.95 2749
3700 746 1.83 1703 803 2.13 1985 856 2.44 2277 906 2.77 2580 953 3.10 2894
3750 755 1.89 1766 811 2.20 2051 864 2.52 2346 913 2.84 2653 959 3.18 2969
AIRFLOW
CFM
2250 832 1.71 1592 882 1.99 1855 928 2.29 2131 973 2.59 2420 1015 2.92 2720
2300 837 1.75 1630 886 2.03 1896 933 2.33 2174 977 2.64 2463 1020 2.97 2766
2400 847 1.83 1710 896 2.12 1980 942 2.43 2262 986 2.74 2556 1028 3.07 2861
2500 857 1.92 1794 905 2.22 2069 951 2.52 2355 995 2.84 2653 1037 3.18 2962
2550 862 1.97 1838 910 2.27 2114 956 2.58 2403 999 2.90 2704 1041 3.23 3014
2600 867 2.02 1884 915 2.32 2162 961 2.63 2453 1004 2.95 2755 1045 3.29 3068
2700 878 2.12 1978 926 2.42 2261 971 2.74 2556 1013 3.07 2862 1055 3.41 3180
2800 889 2.23 2077 936 2.54 2365 981 2.86 2664 1023 3.19 2975 1064 3.54 3297
2900 900 2.34 2181 947 2.65 2474 991 2.98 2778 1033 3.32 3094 1073 3.67 3419
3000 912 2.46 2290 958 2.78 2588 1001 3.11 2897 1043 3.45 3217 1083 3.80 3547
3100 923 2.58 2406 969 2.90 2708 1012 3.24 3022 1053 3.59 3347 1093 3.95 3682
3200 935 2.71 2526 980 3.04 2834 1023 3.38 3152 1064 3.73 3482 1103 4.10 3821
3300 947 2.84 2652 992 3.18 2966 1034 3.53 3289 1075 3.89 3623 — — —
3400 959 2.99 2785 1003 3.33 3103 1045 3.68 3432 1086 4.04 3771 ———
3500 972 3.13 2923 1015 3.48 3246 1057 3.84 3581 — — — — — —
3600 984 3.29 3068 1027 3.64 3396 1068 4.01 3736 — — — — — —
3700 997 3.45 3218 1040 3.81 3553 1080 4.18 3897 — — — — — —
3750 1004 3.54 3296 1046 3.90 3633 — — — — — — — — —
Bhp — Brake Horsepower Input to Fan
Watts — Input Watts to Motor
*Motor drive range: 860 to 1080 rpm. All other rpms require field-
supplied drive.
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
LEGEND
0.2 0.4 0.6 0.8 1.0
1.2 1.4 1.6 1.8 2.0
EXTERNAL STATIC PRESSURE (in. wg)
EXTERNAL STATIC PRESSURE (in. wg)
NOTES:
1. Boldface indicates a field-supplied drive is required.
2. Maximum continuous bhp is 4.20.
3. See page 21 for general fan performance notes.
—23—
Table 14 — Fan Performance 549B102 — Vertical Discharge Units; Standard Motor (Belt Drive)*
AIRFLOW
CFM
2500 489 0.41 386 564 0.54 506 629 0.67 625 688 0.80 745 741 0.93 866
2600 502 0.45 424 576 0.59 548 640 0.72 672 697 0.85 797 750 0.99 923
2700 515 0.50 465 587 0.64 594 650 0.77 723 707 0.91 852 760 1.05 982
2800 529 0.55 508 599 0.69 642 661 0.83 776 718 0.98 910 769 1.12 1044
2900 542 0.59 555 611 0.74 693 672 0.89 832 728 1.04 970 779 1.19 1109
3000 556 0.65 604 623 0.80 748 684 0.95 891 738 1.11 1034 789 1.26 1177
3100 569 0.70 656 636 0.86 805 695 1.02 953 749 1.18 1100 799 1.34 1249
3200 583 0.76 712 648 0.93 865 707 1.09 1018 760 1.26 1170 809 1.42 1323
3300 597 0.83 770 661 1.00 929 718 1.17 1086 771 1.33 1244 820 1.50 1401
3400 611 0.89 832 674 1.07 996 730 1.24 1158 782 1.42 1320 831 1.59 1483
3500 625 0.96 898 687 1.14 1066 742 1.32 1233 794 1.50 1400 841 1.68 1567
3600 639 1.04 967 700 1.22 1140 754 1.41 1312 805 1.59 1484 852 1.78 1656
3700 654 1.11 1040 713 1.31 1218 767 1.50 1395 817 1.69 1571 863 1.87 1748
3800 668 1.20 1116 726 1.39 1299 779 1.59 1481 828 1.78 1662 874 1.98 1844
3900 683 1.28 1197 739 1.48 1385 792 1.69 1572 840 1.88 1758 886 2.08 1943
4000 697 1.37 1281 753 1.58 1474 804 1.79 1666 852 1.99 1857 897 2.20 2048
4100 712 1.47 1370 766 1.68 1567 817 1.89 1764 864 2.10 1960 909 2.31 2155
4200 726 1.57 1462 780 1.79 1665 830 2.00 1866 876 2.22 2067 920 2.43 2268
4300 741 1.67 1559 794 1.89 1767 843 2.12 1973 889 2.34 2179 932 2.56 2384
AIRFLOW
CFM
2500 791 1.06 988 837 1.19 1112 881 1.33 1236 922 1.46 1362 962 1.60 1490
2600 799 1.12 1049 845 1.26 1177 889 1.40 1306 930 1.54 1436 969 1.68 1568
2700 808 1.19 1113 854 1.34 1245 897 1.48 1378 938 1.62 1513 977 1.77 1648
2800 817 1.26 1179 863 1.41 1316 905 1.56 1454 946 1.71 1592 985 1.86 1732
2900 827 1.34 1249 872 1.49 1390 914 1.64 1532 954 1.80 1675 993 1.95 1819
3000 836 1.42 1322 881 1.57 1467 923 1.73 1613 963 1.89 1761 1001 2.05 1909
3100 846 1.50 1398 890 1.66 1547 932 1.82 1698 972 1.98 1849 1010 2.15 2002
3200 856 1.58 1477 899 1.75 1631 941 1.92 1786 980 2.08 1942 1018 2.25 2099
3300 866 1.67 1559 909 1.84 1718 950 2.01 1878 989 2.19 2038 1027 2.36 2199
3400 876 1.76 1645 919 1.94 1808 960 2.12 1972 998 2.29 2137 1036 2.47 2303
3500 886 1.86 1734 929 2.04 1902 969 2.22 2071 1008 2.40 2240 1045 2.58 2410
3600 897 1.96 1827 939 2.14 2000 979 2.33 2173 1017 2.52 2347 1054 2.70 2521
3700 907 2.06 1924 949 2.25 2101 989 2.44 2279 1027 2.63 2457 1063 2.83 2636
3800 918 2.17 2025 959 2.37 2207 999 2.56 2389 1036 2.76 2571 — — —
3900 929 2.28 2130 970 2.48 2316 1009 2.68 2502 1046 2.88 2690 — — —
4000 940 2.40 2238 980 2.61 2429 1019 2.81 2620 — — — — — —
4100 951 2.52 2351 991 2.73 2547 — — — — — — — — —
4200 962 2.65 2468 1002 2.86 2668 — — — — — — — — —
4300 973 2.78 2589 — — — — — — — — — — — —
Bhp — Brake Horsepower Input to Fan
Watts — Input Watts to Motor
*Motor drive range: 840 to 1085 rpm. All other rpms require field-
supplied drive.
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
LEGEND
0.2 0.4 0.6 0.8 1.0
1.2 1.4 1.6 1.8 2.0
EXTERNAL STATIC PRESSURE (in. wg)
EXTERNAL STATIC PRESSURE (in. wg)
NOTES:
1. Boldface indicates a field-supplied drive is required.
2. Maximum continuous bhp is 2.90.
3. See page 21 for general fan performance notes.
—24—
Table 15 — Fan Performance 549B102 — Vertical Discharge Units; High-Static Motor (Belt Drive)*
AIRFLOW
(Cfm)
2500 489 0.41 386 564 0.54 506 629 0.67 625 688 0.80 745 741 0.93 866
2600 502 0.45 424 576 0.59 548 640 0.72 672 697 0.85 797 750 0.99 923
2700 515 0.50 465 587 0.64 594 650 0.77 723 707 0.91 852 760 1.05 982
2800 529 0.55 508 599 0.69 642 661 0.83 776 718 0.98 910 769 1.12 1044
2900 542 0.59 555 611 0.74 693 672 0.89 832 728 1.04 970 779 1.19 1109
3000 556 0.65 604 623 0.80 748 684 0.95 891 738 1.11 1034 789 1.26 1177
3100 569 0.70 656 636 0.86 805 695 1.02 953 749 1.18 1100 799 1.34 1249
3200 583 0.76 712 648 0.93 865 707 1.09 1018 760 1.26 1170 809 1.42 1323
3300 597 0.83 770 661 1.00 929 718 1.17 1086 771 1.33 1244 820 1.50 1401
3400 611 0.89 832 674 1.07 996 730 1.24 1158 782 1.42 1320 831 1.59 1483
3500 625 0.96 898 687 1.14 1066 742 1.32 1233 794 1.50 1400 841 1.68 1567
3600 639 1.04 967 700 1.22 1140 754 1.41 1312 805 1.59 1484 852 1.78 1656
3700 654 1.11 1040 713 1.31 1218 767 1.50 1395 817 1.69 1571 863 1.87 1748
3800 668 1.20 1116 726 1.39 1299 779 1.59 1481 828 1.78 1662 874 1.98 1844
3900 683 1.28 1197 739 1.48 1385 792 1.69 1572 840 1.88 1758 886 2.08 1943
4000 697 1.37 1281 753 1.58 1474 804 1.79 1666 852 1.99 1857 897 2.20 2048
4100 712 1.47 1370 766 1.68 1567 817 1.89 1764 864 2.10 1960 909 2.31 2155
4200 726 1.57 1462 780 1.79 1665 830 2.00 1866 876 2.22 2067 920 2.43 2268
4300 741 1.67 1559 794 1.89 1767 843 2.12 1973 889 2.34 2179 932 2.56 2384
AIRFLOW
(Cfm)
2500 791 1.06 988 837 1.19 1112 881 1.33 1236 922 1.46 1362 962 1.60 1490
2600 799 1.12 1049 845 1.26 1177 889 1.40 1306 930 1.54 1436 969 1.68 1568
2700 808 1.19 1113 854 1.34 1245 897 1.48 1378 938 1.62 1513 977 1.77 1648
2800 817 1.26 1179 863 1.41 1316 905 1.56 1454 946 1.71 1592 985 1.86 1732
2900 827 1.34 1249 872 1.49 1390 914 1.64 1532 954 1.80 1675 993 1.95 1819
3000 836 1.42 1322 881 1.57 1467 923 1.73 1613 963 1.89 1761 1001 2.05 1909
3100 846 1.50 1398 890 1.66 1547 932 1.82 1698 972 1.98 1849 1010 2.15 2002
3200 856 1.58 1477 899 1.75 1631 941 1.92 1786 980 2.08 1942 1018 2.25 2099
3300 866 1.67 1559 909 1.84 1718 950 2.01 1878 989 2.19 2038 1027 2.36 2199
3400 876 1.76 1645 919 1.94 1808 960 2.12 1972 998 2.29 2137 1036 2.47 2303
3500 886 1.86 1734 929 2.04 1902 969 2.22 2071 1008 2.40 2240 1045 2.58 2410
3600 897 1.96 1827 939 2.14 2000 979 2.33 2173 1017 2.52 2347 1054 2.70 2521
3700 907 2.06 1924 949 2.25 2101 989 2.44 2279 1027 2.63 2457 1063 2.83 2636
3800 918 2.17 2025 959 2.37 2207 999 2.56 2389 1036 2.76 2571 1073 2.95 2755
3900 929 2.28 2130 970 2.48 2316 1009 2.68 2502 1046 2.88 2690 1082 3.09 2877
4000 940 2.40 2238 980 2.61 2429 1019 2.81 2620 1056 3.02 2812 1092 3.22 3004
4100 951 2.52 2351 991 2.73 2547 1029 2.94 2743 1066 3.15 2939 1102 3.36 3136
4200 962 2.65 2468 1002 2.86 2668 1040 3.08 2869 1076 3.29 3070 1112 3.51 3271
4300 973 2.78 2589 1013 3.00 2794 1050 3.22 2999 1087 3.44 3205 1122 3.66 3411
Bhp — Brake Horsepower Input to Fan
Watts — Input Watts to Motor
*Motor drive range: 860 to 1080 rpm. All other rpms require field-
supplied drive.
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
LEGEND
0.20.40.60.81.0
1.21.41.61.82.0
EXTERNAL STATIC PRESSURE (in. wg)
EXTERNAL STATIC PRESSURE (in. wg)
NOTES:
1. Boldface indicates a field-supplied drive is required.
2. Maximum continuous bhp is 4.20.
3. See page 21 for general fan performance notes.
—25—
Table 16 — Fan Performance 549B120 — Vertical Discharge Units; Standard Motor (Belt Drive)*
AIRFLOW
(Cfm)
3000 556 0.65 604 623 0.80 748 684 0.95 891 738 1.11 1034 789 1.26 1177
3100 569 0.70 656 636 0.86 805 695 1.02 953 749 1.18 1100 799 1.34 1249
3200 583 0.76 712 648 0.93 865 707 1.09 1018 760 1.26 1170 809 1.42 1323
3300 597 0.83 770 661 1.00 929 718 1.17 1086 771 1.33 1244 820 1.50 1401
3400 611 0.89 832 674 1.07 996 730 1.24 1158 782 1.42 1320 831 1.59 1483
3500 625 0.96 898 687 1.14 1066 742 1.32 1233 794 1.50 1400 841 1.68 1567
3600 639 1.04 967 700 1.22 1140 754 1.41 1312 805 1.59 1484 852 1.78 1656
3700 654 1.11 1040 713 1.31 1218 767 1.50 1395 817 1.69 1571 863 1.87 1748
3800 668 1.20 1116 726 1.39 1299 779 1.59 1481 828 1.78 1662 874 1.98 1844
3900 683 1.28 1197 739 1.48 1385 792 1.69 1572 840 1.88 1758 886 2.08 1943
4000 697 1.37 1281 753 1.58 1474 804 1.79 1666 852 1.99 1857 897 2.20 2048
4100 712 1.47 1370 766 1.68 1567 817 1.89 1764 864 2.10 1960 909 2.31 2155
4200 726 1.57 1462 780 1.79 1665 830 2.00 1866 876 2.22 2067 920 2.43 2268
4300 741 1.67 1559 794 1.89 1767 843 2.12 1973 889 2.34 2179 932 2.56 2384
4400 755 1.78 1660 807 2.01 1873 856 2.23 2084 901 2.46 2295 944 2.69 2505
4500 770 1.89 1766 821 2.13 1984 869 2.36 2200 914 2.59 2415 956 2.82 2630
4600 785 2.01 1876 835 2.25 2099 882 2.49 2320 926 2.72 2541 968 2.96 2760
4700 800 2.14 1991 849 2.38 2219 895 2.62 2445 939 2.86 2670 980 3.10 2895
4800 815 2.26 2111 863 2.51 2344 909 2.76 2575 952 3.01 2805 993 3.25 3034
4900 829 2.40 2235 877 2.65 2473 922 2.91 2709 965 3.16 2944 1005 3.41 3178
5000 844 2.54 2365 891 2.80 2608 936 3.06 2849 978 3.31 3089 1018 3.57 3328
AIRFLOW
(Cfm)
3000 836 1.42 1322 881 1.57 1467 923 1.73 1613 963 1.89 1761 1001 2.05 1909
3100 846 1.50 1398 890 1.66 1547 932 1.82 1698 972 1.98 1849 1010 2.15 2002
3200 856 1.58 1477 899 1.75 1631 941 1.92 1786 980 2.08 1942 1018 2.25 2099
3300 866 1.67 1559 909 1.84 1718 950 2.01 1878 989 2.19 2038 1027 2.36 2199
3400 876 1.76 1645 919 1.94 1808 960 2.12 1972 998 2.29 2137 1036 2.47 2303
3500 886 1.86 1734 929 2.04 1902 969 2.22 2071 1008 2.40 2240 1045 2.58 2410
3600 897 1.96 1827 939 2.14 2000 979 2.33 2173 1017 2.52 2347 1054 2.70 2521
3700 907 2.06 1924 949 2.25 2101 989 2.44 2279 1027 2.63 2457 1063 2.83 2636
3800 918 2.17 2025 959 2.37 2207 999 2.56 2389 1036 2.76 2571 1073 2.95 2755
3900 929 2.28 2130 970 2.48 2316 1009 2.68 2502 1046 2.88 2690 1082 3.09 2877
4000 940 2.40 2238 980 2.61 2429 1019 2.81 2620 1056 3.02 2812 1092 3.22 3004
4100 951 2.52 2351 991 2.73 2547 1029 2.94 2743 1066 3.15 2939 1102 3.36 3136
4200 962 2.65 2468 1002 2.86 2668 1040 3.08 2869 1076 3.29 3070 1112 3.51 3271
4300 973 2.78 2589 1013 3.00 2794 1050 3.22 2999 1087 3.44 3205 1122 3.66 3411
4400 985 2.91 2715 1024 3.14 2924 1061 3.36 3134 1097 3.59 3345 ———
4500 996 3.05 2845 1035 3.28 3059 1072 3.51 3274 — — — — — —
4600 1008 3.20 2979 1046 3.43 3199 1083 3.67 3418 ——————
4700 1020 3.34 3119 1058 3.58 3343 — — — — — — — — —
4800 1032 3.50 3263 — — — — — — — — — — — —
4900 1044 3.66 3413 — — — — — — — — — — — —
5000 ———————————————
Bhp — Brake Horsepower Input to Fan
Watts — Input Watts to Motor
*Motor drive range: 860 to 1080 rpm. All other rpms require field-
supplied drive.
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
LEGEND
0.2 0.4 0.6 0.8 1.0
1.2 1.4 1.6 1.8 2.0
EXTERNAL STATIC PRESSURE (in. wg)
EXTERNAL STATIC PRESSURE (in. wg)
NOTES:
1. Boldface indicates a field-supplied drive is required.
2. Maximum continuous bhp is 3.70.
3. See page 21 for general fan performance notes.
—26—
Table 17 — Fan Performance 549B120 — Vertical Discharge Units; High-Static Motor (Belt Drive)*
AIRFLOW
(Cfm)
3000 556 0.65 604 623 0.80 748 684 0.95 891 738 1.11 1034 789 1.26 1177
3100 569 0.70 656 636 0.86 805 695 1.02 953 749 1.18 1100 799 1.34 1249
3200 583 0.76 712 648 0.93 865 707 1.09 1018 760 1.26 1170 809 1.42 1323
3300 597 0.83 770 661 1.00 929 718 1.17 1086 771 1.33 1244 820 1.50 1401
3400 611 0.89 832 674 1.07 996 730 1.24 1158 782 1.42 1320 831 1.59 1483
3500 625 0.96 898 687 1.14 1066 742 1.32 1233 794 1.50 1400 841 1.68 1567
3600 639 1.04 967 700 1.22 1140 754 1.41 1312 805 1.59 1484 852 1.78 1656
3700 654 1.11 1040 713 1.31 1218 767 1.50 1395 817 1.69 1571 863 1.87 1748
3800 668 1.20 1116 726 1.39 1299 779 1.59 1481 828 1.78 1662 874 1.98 1844
3900 683 1.28 1197 739 1.48 1385 792 1.69 1572 840 1.88 1758 886 2.08 1943
4000 697 1.37 1281 753 1.58 1474 804 1.79 1666 852 1.99 1857 897 2.20 2048
4100 712 1.47 1370 766 1.68 1567 817 1.89 1764 864 2.10 1960 909 2.31 2155
4200 726 1.57 1462 780 1.79 1665 830 2.00 1866 876 2.22 2067 920 2.43 2268
4300 741 1.67 1559 794 1.89 1767 843 2.12 1973 889 2.34 2179 932 2.56 2384
4400 755 1.78 1660 807 2.01 1873 856 2.23 2084 901 2.46 2295 944 2.69 2505
4500 770 1.89 1766 821 2.13 1984 869 2.36 2200 914 2.59 2415 956 2.82 2630
4600 785 2.01 1876 835 2.25 2099 882 2.49 2320 926 2.72 2541 968 2.96 2760
4700 800 2.14 1991 849 2.38 2219 895 2.62 2445 939 2.86 2670 980 3.10 2895
4800 815 2.26 2111 863 2.51 2344 909 2.76 2575 952 3.01 2805 993 3.25 3034
4900 829 2.40 2235 877 2.65 2473 922 2.91 2709 965 3.16 2944 1005 3.41 3178
5000 844 2.54 2365 891 2.80 2608 936 3.06 2849 978 3.31 3089 1018 3.57 3328
AIRFLOW
(Cfm)
3000 836 1.42 1322 881 1.57 1467 923 1.73 1613 963 1.89 1761 1001 2.05 1909
3100 846 1.50 1398 890 1.66 1547 932 1.82 1698 972 1.98 1849 1010 2.15 2002
3200 856 1.58 1477 899 1.75 1631 941 1.92 1786 980 2.08 1942 1018 2.25 2099
3300 866 1.67 1559 909 1.84 1718 950 2.01 1878 989 2.19 2038 1027 2.36 2199
3400 876 1.76 1645 919 1.94 1808 960 2.12 1972 998 2.29 2137 1036 2.47 2303
3500 886 1.86 1734 929 2.04 1902 969 2.22 2071 1008 2.40 2240 1045 2.58 2410
3600 897 1.96 1827 939 2.14 2000 979 2.33 2173 1017 2.52 2347 1054 2.70 2521
3700 907 2.06 1924 949 2.25 2101 989 2.44 2279 1027 2.63 2457 1063 2.83 2636
3800 918 2.17 2025 959 2.37 2207 999 2.56 2389 1036 2.76 2571 1073 2.95 2755
3900 929 2.28 2130 970 2.48 2316 1009 2.68 2502 1046 2.88 2690 1082 3.09 2877
4000 940 2.40 2238 980 2.61 2429 1019 2.81 2620 1056 3.02 2812 1092 3.22 3004
4100 951 2.52 2351 991 2.73 2547 1029 2.94 2743 1066 3.15 2939 1102 3.36 3136
4200 962 2.65 2468 1002 2.86 2668 1040 3.08 2869 1076 3.29 3070 1112 3.51 3271
4300 973 2.78 2589 1013 3.00 2794 1050 3.22 2999 1087 3.44 3205 1122 3.66 3411
4400 985 2.91 2715 1024 3.14 2924 1061 3.36 3134 1097 3.59 3345 1132 3.81 3555
4500 996 3.05 2845 1035 3.28 3059 1072 3.51 3274 1108 3.74 3489 1142 3.97 3704
4600 1008 3.20 2979 1046 3.43 3199 1083 3.67 3418 1118 3.90 3638 1152 4.14 3857
4700 1020 3.34 3119 1058 3.58 3343 1094 3.83 3567 1129 4.07 3792 1163 4.31 4016
4800 1032 3.50 3263 1069 3.74 3492 1105 3.99 3721 1140 4.24 3950 1174 4.48 4179
4900 1044 3.66 3413 1081 3.91 3646 1117 4.16 3880 1151 4.41 4113 1184 4.66 4347
5000 1056 3.82 3566 1093 4.08 3805 1128 4.34 4044 1162 4.59 4282 1195 4.85 4520
Bhp — Brake Horsepower Input to Fan
Watts — Input Watts to Motor
*Motor drive range: 830 to 1130 rpm. All other rpms require field-
supplied drive.
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
LEGEND
0.20.40.60.81.0
1.21.41.61.82.0
EXTERNAL STATIC PRESSURE (in. wg)
EXTERNAL STATIC PRESSURE (in. wg)
NOTES:
1. Boldface indicates a field-supplied drive is required.
2. Maximum continuous bhp is 5.25.
3. See page 21 for general fan performance notes.
—27—
Table 18 — Fan Performance 549B090 — Horizontal Discharge Units; Standard Motor (Belt Drive)*
AIRFLOW
(Cfm)
2250 465 0.43 402 555 0.64 596 629 0.86 802 694 1.10 1021 753 1.34 1252
2300 471 0.45 421 560 0.66 618 634 0.89 828 699 1.13 1050 757 1.38 1283
2400 483 0.49 461 571 0.71 665 644 0.94 881 708 1.19 1109 766 1.45 1348
2500 495 0.54 503 581 0.77 715 654 1.01 937 717 1.26 1171 775 1.52 1416
2550 501 0.56 526 587 0.79 740 659 1.04 967 722 1.29 1204 779 1.56 1452
2600 507 0.59 549 592 0.82 767 664 1.07 996 727 1.33 1237 784 1.60 1488
2700 519 0.64 597 603 0.88 823 674 1.14 1059 737 1.40 1306 793 1.68 1563
2800 532 0.70 649 614 0.95 882 684 1.21 1125 746 1.48 1378 803 1.76 1641
2900 544 0.75 703 625 1.01 944 695 1.28 1194 756 1.56 1453 812 1.85 1723
3000 557 0.82 761 637 1.08 1009 705 1.36 1266 766 1.64 1533 822 1.94 1808
3100 570 0.88 823 648 1.16 1079 716 1.44 1342 776 1.73 1615 831 2.03 1897
3200 583 0.95 888 660 1.23 1151 727 1.53 1422 787 1.82 1702 841 2.13 1991
3300 596 1.03 957 672 1.32 1228 738 1.61 1506 797 1.92 1792 851 2.24 2088
3400 609 1.10 1030 684 1.40 1308 749 1.71 1593 808 2.02 1887 861 2.35 2188
3500 622 1.19 1106 696 1.49 1392 760 1.81 1685 818 2.13 1985 872 2.46 2294
3600 635 1.27 1187 708 1.59 1481 771 1.91 1781 829 2.24 2088 882 2.58 2403
3700 649 1.36 1272 720 1.69 1573 783 2.02 1881 840 2.35 2195 892 2.70 2517
3750 655 1.41 1316 726 1.74 1621 789 2.07 1932 845 2.41 2250 897 2.76 2575
AIRFLOW
(Cfm)
2250 806 1.60 1494 856 1.87 1747 903 2.15 2009 947 2.45 2282 988 2.75 2564
2300 811 1.64 1528 860 1.91 1784 907 2.20 2048 950 2.49 2323 992 2.80 2607
2400 819 1.71 1599 868 1.99 1859 915 2.28 2129 958 2.58 2410 1000 2.89 2698
2500 828 1.79 1672 877 2.08 1938 923 2.37 2214 966 2.68 2499 ———
2550 832 1.83 1710 881 2.12 1979 927 2.42 2258 971 2.73 2545 ———
2600 836 1.88 1749 885 2.17 2021 931 2.47 2302 975 2.78 2592 ———
2700 845 1.96 1830 894 2.26 2107 940 2.57 2394 983 2.88 2689 ———
2800 854 2.05 1914 903 2.36 2197 948 2.67 2488 — — — — — —
2900 864 2.15 2002 912 2.46 2290 957 2.77 2587 ——————
3000 873 2.24 2093 921 2.56 2388 966 2.89 2691 ——————
3100 882 2.35 2189 930 2.67 2489 — — — — — — — — —
3200 892 2.45 2288 939 2.78 2595 — — — — — — — — —
3300 901 2.56 2391 948 2.90 2704 — — — — — — — — —
3400 911 2.68 2499 — — — — — — — — — — — —
3500 921 2.80 2610 — — — — — — — — — — — —
3600 ———————————————
3700 ———————————————
3750 ———————————————
Bhp — Brake Horsepower Input to Fan
Watts — Input Watts to Motor
*Motor drive range: 730 to 950 rpm. All other rpms require field-
supplied drive.
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
LEGEND
0.2 0.4 0.6 0.8 1.0
1.2 1.4 1.6 1.8 2.0
EXTERNAL STATIC PRESSURE (in. wg)
EXTERNAL STATIC PRESSURE (in. wg)
NOTES:
1. Boldface indicates a field-supplied drive is required.
2. Maximum continuous bhp is 2.90.
3. See page 21 for general fan performance notes.
—28—
Table 19 — Fan Performance 549B090 — Horizontal Discharge Units; High-Static Motor (Belt Drive)*
AIRFLOW
(Cfm)
2250 465 0.43 402 555 0.64 596 629 0.86 802 694 1.10 1021 753 1.34 1252
2300 471 0.45 421 560 0.66 618 634 0.89 828 699 1.13 1050 757 1.38 1283
2400 483 0.49 461 571 0.71 665 644 0.94 881 708 1.19 1109 766 1.45 1348
2500 495 0.54 503 581 0.77 715 654 1.01 937 717 1.26 1171 775 1.52 1416
2550 501 0.56 526 587 0.79 740 659 1.04 967 722 1.29 1204 779 1.56 1452
2600 507 0.59 549 592 0.82 767 664 1.07 996 727 1.33 1237 784 1.60 1488
2700 519 0.64 597 603 0.88 823 674 1.14 1059 737 1.40 1306 793 1.68 1563
2800 532 0.70 649 614 0.95 882 684 1.21 1125 746 1.48 1378 803 1.76 1641
2900 544 0.75 703 625 1.01 944 695 1.28 1194 756 1.56 1453 812 1.85 1723
3000 557 0.82 761 637 1.08 1009 705 1.36 1266 766 1.64 1533 822 1.94 1808
3100 570 0.88 823 648 1.16 1079 716 1.44 1342 776 1.73 1615 831 2.03 1897
3200 583 0.95 888 660 1.23 1151 727 1.53 1422 787 1.82 1702 841 2.13 1991
3300 596 1.03 957 672 1.32 1228 738 1.61 1506 797 1.92 1792 851 2.24 2088
3400 609 1.10 1030 684 1.40 1308 749 1.71 1593 808 2.02 1887 861 2.35 2188
3500 622 1.19 1106 696 1.49 1392 760 1.81 1685 818 2.13 1985 872 2.46 2294
3600 635 1.27 1187 708 1.59 1481 771 1.91 1781 829 2.24 2088 882 2.58 2403
3700 649 1.36 1272 720 1.69 1573 783 2.02 1881 840 2.35 2195 892 2.70 2517
3750 655 1.41 1316 726 1.74 1621 789 2.07 1932 845 2.41 2250 897 2.76 2575
AIRFLOW
(Cfm)
2250 806 1.60 1494 856 1.87 1747 903 2.15 2009 947 2.45 2282 988 2.75 2564
2300 811 1.64 1528 860 1.91 1784 907 2.20 2048 950 2.49 2323 992 2.80 2607
2400 819 1.71 1599 868 1.99 1859 915 2.28 2129 958 2.58 2410 1000 2.89 2698
2500 828 1.79 1672 877 2.08 1938 923 2.37 2214 966 2.68 2499 1008 3.00 2793
2550 832 1.83 1710 881 2.12 1979 927 2.42 2258 971 2.73 2545 1012 3.05 2842
2600 836 1.88 1749 885 2.17 2021 931 2.47 2302 975 2.78 2592 1016 3.10 2891
2700 845 1.96 1830 894 2.26 2107 940 2.57 2394 983 2.88 2689 1024 3.21 2993
2800 854 2.05 1914 903 2.36 2197 948 2.67 2488 991 2.99 2790 1032 3.32 3099
2900 864 2.15 2002 912 2.46 2290 957 2.77 2587 1000 3.10 2894 1041 3.44 3209
3000 873 2.24 2093 921 2.56 2388 966 2.89 2691 1008 3.22 3003 1049 3.56 3323
3100 882 2.35 2189 930 2.67 2489 975 3.00 2798 1017 3.34 3115 1057 3.69 3441
3200 892 2.45 2288 939 2.78 2595 984 3.12 2909 1026 3.47 3233 1066 3.82 3564
3300 901 2.56 2391 948 2.90 2704 993 3.24 3024 1035 3.60 3353 1075 3.96 3690
3400 911 2.68 2499 958 3.02 2817 1002 3.37 3144 1044 3.73 3479 1084 4.10 3821
3500 921 2.80 2610 967 3.15 2935 1011 3.50 3268 1053 3.87 3608 — — —
3600 931 2.92 2726 977 3.28 3057 1021 3.64 3396 1062 4.01 3743 — — —
3700 941 3.05 2847 987 3.41 3184 1030 3.78 3529 1071 4.16 3882 — — —
3750 946 3.12 2908 992 3.48 3249 1035 3.86 3597 — — — — — —
Bhp — Brake Horsepower Input to Fan
Watts — Input Watts to Motor
*Motor drive range: 860 to 1080 rpm. All other rpms require field-
supplied drive.
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
LEGEND
0.20.40.60.81.0
1.21.41.61.82.0
EXTERNAL STATIC PRESSURE (in. wg)
EXTERNAL STATIC PRESSURE (in. wg)
NOTES:
1. Boldface indicates a field-supplied drive is required.
2. Maximum continuous bhp is 4.20.
3. See page 21 for general fan performance notes.
—29—
Table 20 — Fan Performance 549B102 — Horizontal Discharge Units; Standard Motor (Belt Drive)*
AIRFLOW
(Cfm)
2500 462 0.37 348 541 0.50 467 614 0.64 594 681 0.78 728 744 0.93 868
2600 474 0.41 381 551 0.54 505 622 0.68 635 688 0.83 773 750 0.98 916
2700 486 0.45 417 561 0.58 545 630 0.73 679 695 0.88 820 756 1.04 967
2800 498 0.49 456 571 0.63 587 639 0.78 725 702 0.93 870 762 1.09 1020
2900 510 0.53 497 581 0.68 632 648 0.83 774 710 0.99 922 768 1.15 1076
3000 523 0.58 541 592 0.73 680 657 0.88 825 718 1.05 977 775 1.22 1135
3100 536 0.63 587 603 0.78 730 666 0.94 879 726 1.11 1035 783 1.28 1196
3200 549 0.68 637 614 0.84 783 676 1.00 936 735 1.17 1096 790 1.35 1260
3300 562 0.74 689 626 0.90 839 686 1.07 996 743 1.24 1159 798 1.42 1328
3400 575 0.80 744 637 0.96 898 696 1.14 1059 752 1.31 1226 806 1.50 1398
3500 588 0.86 802 649 1.03 961 707 1.21 1125 762 1.39 1296 815 1.58 1472
3600 601 0.93 864 661 1.10 1026 717 1.28 1194 771 1.47 1369 823 1.66 1548
3700 614 1.00 929 673 1.17 1095 728 1.36 1267 781 1.55 1445 832 1.75 1629
3800 628 1.07 997 685 1.25 1167 739 1.44 1343 791 1.64 1525 841 1.84 1712
3900 641 1.15 1069 697 1.33 1243 750 1.53 1423 801 1.72 1608 850 1.93 1799
4000 655 1.23 1144 709 1.42 1322 761 1.61 1506 812 1.82 1695 860 2.03 1890
4100 668 1.31 1223 722 1.51 1405 773 1.71 1593 822 1.92 1786 870 2.13 1984
4200 682 1.40 1305 734 1.60 1492 784 1.80 1683 833 2.02 1880 880 2.23 2082
4300 696 1.49 1392 747 1.70 1582 796 1.91 1777 844 2.12 1979 890 2.34 2184
AIRFLOW
(Cfm)
2500 804 1.09 1013 861 1.25 1164 915 1.41 1319 967 1.59 1479 1017 1.76 1642
2600 809 1.14 1065 864 1.31 1219 918 1.48 1378 969 1.65 1541 1018 1.83 1708
2700 813 1.20 1119 869 1.37 1277 921 1.54 1439 972 1.72 1606 1021 1.90 1776
2800 819 1.26 1176 873 1.43 1337 925 1.61 1503 975 1.79 1673 1023 1.98 1847
2900 824 1.32 1235 878 1.50 1400 929 1.68 1569 978 1.87 1742 1026 2.06 1920
3000 830 1.39 1298 883 1.57 1466 934 1.76 1638 982 1.95 1815 1029 2.14 1996
3100 837 1.46 1363 889 1.65 1534 938 1.83 1710 986 2.03 1891 1033 2.23 2075
3200 843 1.53 1431 894 1.72 1606 944 1.91 1785 991 2.11 1969 1037 2.31 2157
3300 850 1.61 1502 901 1.80 1680 949 2.00 1863 996 2.20 2051 1041 2.40 2242
3400 858 1.69 1576 907 1.88 1758 955 2.09 1944 1001 2.29 2135 1046 2.50 2331
3500 865 1.77 1653 914 1.97 1838 961 2.18 2029 1007 2.38 2223 1051 2.60 2422
3600 873 1.86 1733 921 2.06 1922 967 2.27 2116 1012 2.48 2314 1056 2.70 2516
3700 881 1.95 1816 928 2.16 2010 974 2.37 2207 1019 2.58 2409 1062 2.80 2615
3800 889 2.04 1904 936 2.25 2100 981 2.47 2302 1025 2.69 2507 — — —
3900 898 2.14 1995 944 2.35 2195 988 2.57 2399 1032 2.80 2608 — — —
4000 907 2.24 2089 952 2.46 2293 996 2.68 2501 — — — — — —
4100 916 2.35 2187 960 2.57 2395 1004 2.80 2607 — — — — — —
4200 925 2.45 2289 969 2.68 2500 — — — — — — — — —
4300 934 2.57 2395 978 2.80 2610 — — — — — — — — —
Bhp — Brake Horsepower Input to Fan
Watts — Input Watts to Motor
*Motor drive range: 840 to 1085 rpm. All other rpms require field-
supplied drive.
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
LEGEND
0.2 0.4 0.6 0.8 1.0
1.2 1.4 1.6 1.8 2.0
EXTERNAL STATIC PRESSURE (in. wg)
EXTERNAL STATIC PRESSURE (in. wg)
NOTES:
1. Boldface indicates a field-supplied drive is required.
2. Maximum continuous bhp is 2.90.
3. See page 21 for general fan performance notes.
—30—
Table 21 — Fan Performance 549B102 — Horizontal Discharge Units; High-Static Motor (Belt Drive)*
AIRFLOW
(Cfm)
2500 462 0.37 348 541 0.50 467 614 0.64 594 681 0.78 728 744 0.93 868
2600 474 0.41 381 551 0.54 505 622 0.68 635 688 0.83 773 750 0.98 916
2700 486 0.45 417 561 0.58 545 630 0.73 679 695 0.88 820 756 1.04 967
2800 498 0.49 456 571 0.63 587 639 0.78 725 702 0.93 870 762 1.09 1020
2900 510 0.53 497 581 0.68 632 648 0.83 774 710 0.99 922 768 1.15 1076
3000 523 0.58 541 592 0.73 680 657 0.88 825 718 1.05 977 775 1.22 1135
3100 536 0.63 587 603 0.78 730 666 0.94 879 726 1.11 1035 783 1.28 1196
3200 549 0.68 637 614 0.84 783 676 1.00 936 735 1.17 1096 790 1.35 1260
3300 562 0.74 689 626 0.90 839 686 1.07 996 743 1.24 1159 798 1.42 1328
3400 575 0.80 744 637 0.96 898 696 1.14 1059 752 1.31 1226 806 1.50 1398
3500 588 0.86 802 649 1.03 961 707 1.21 1125 762 1.39 1296 815 1.58 1472
3600 601 0.93 864 661 1.10 1026 717 1.28 1194 771 1.47 1369 823 1.66 1548
3700 614 1.00 929 673 1.17 1095 728 1.36 1267 781 1.55 1445 832 1.75 1629
3800 628 1.07 997 685 1.25 1167 739 1.44 1343 791 1.64 1525 841 1.84 1712
3900 641 1.15 1069 697 1.33 1243 750 1.53 1423 801 1.72 1608 850 1.93 1799
4000 655 1.23 1144 709 1.42 1322 761 1.61 1506 812 1.82 1695 860 2.03 1890
4100 668 1.31 1223 722 1.51 1405 773 1.71 1593 822 1.92 1786 870 2.13 1984
4200 682 1.40 1305 734 1.60 1492 784 1.80 1683 833 2.02 1880 880 2.23 2082
4300 696 1.49 1392 747 1.70 1582 796 1.91 1777 844 2.12 1979 890 2.34 2184
AIRFLOW
(Cfm)
2500 804 1.09 1013 861 1.25 1164 915 1.41 1319 967 1.59 1479 1017 1.76 1642
2600 809 1.14 1065 864 1.31 1219 918 1.48 1378 969 1.65 1541 1018 1.83 1708
2700 813 1.20 1119 869 1.37 1277 921 1.54 1439 972 1.72 1606 1021 1.90 1776
2800 819 1.26 1176 873 1.43 1337 925 1.61 1503 975 1.79 1673 1023 1.98 1847
2900 824 1.32 1235 878 1.50 1400 929 1.68 1569 978 1.87 1742 1026 2.06 1920
3000 830 1.39 1298 883 1.57 1466 934 1.76 1638 982 1.95 1815 1029 2.14 1996
3100 837 1.46 1363 889 1.65 1534 938 1.83 1710 986 2.03 1891 1033 2.23 2075
3200 843 1.53 1431 894 1.72 1606 944 1.91 1785 991 2.11 1969 1037 2.31 2157
3300 850 1.61 1502 901 1.80 1680 949 2.00 1863 996 2.20 2051 1041 2.40 2242
3400 858 1.69 1576 907 1.88 1758 955 2.09 1944 1001 2.29 2135 1046 2.50 2331
3500 865 1.77 1653 914 1.97 1838 961 2.18 2029 1007 2.38 2223 1051 2.60 2422
3600 873 1.86 1733 921 2.06 1922 967 2.27 2116 1012 2.48 2314 1056 2.70 2516
3700 881 1.95 1816 928 2.16 2010 974 2.37 2207 1019 2.58 2409 1062 2.80 2615
3800 889 2.04 1904 936 2.25 2100 981 2.47 2302 1025 2.69 2507 1068 2.91 2716
3900 898 2.14 1995 944 2.35 2195 988 2.57 2399 1032 2.80 2608 1074 3.03 2821
4000 907 2.24 2089 952 2.46 2293 996 2.68 2501 1038 2.91 2713 1080 3.14 2930
4100 916 2.35 2187 960 2.57 2395 1004 2.80 2607 1046 3.03 2822 1087 3.26 3042
4200 925 2.45 2289 969 2.68 2500 1011 2.91 2716 1053 3.15 2935 1094 3.39 3159
4300 934 2.57 2395 978 2.80 2610 1020 3.03 2828 1061 3.27 3052 1101 3.52 3279
Bhp — Brake Horsepower Input to Fan
Watts — Input Watts to Motor
*Motor drive range: 860 to 1080 rpm. All other rpms require field-
supplied drive.
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
LEGEND
0.20.40.60.81.0
1.21.41.61.82.0
EXTERNAL STATIC PRESSURE (in. wg)
EXTERNAL STATIC PRESSURE (in. wg)
NOTES:
1. Boldface indicates a field-supplied drive is required.
2. Maximum continuous bhp is 4.20.
3. See page 21 for general fan performance notes.
—31—
Table 22 — Fan Performance 549B120 — Horizontal Discharge Units; Standard Motor (Belt Drive)*
AIRFLOW
(Cfm)
3000 523 0.58 541 592 0.73 680 657 0.88 825 718 1.05 977 775 1.22 1135
3100 536 0.63 587 603 0.78 730 666 0.94 879 726 1.11 1035 783 1.28 1196
3200 549 0.68 637 614 0.84 783 676 1.00 936 735 1.17 1096 790 1.35 1260
3300 562 0.74 689 626 0.90 839 686 1.07 996 743 1.24 1159 798 1.42 1328
3400 575 0.80 744 637 0.96 898 696 1.14 1059 752 1.31 1226 806 1.50 1398
3500 588 0.86 802 649 1.03 961 707 1.21 1125 762 1.39 1296 815 1.58 1472
3600 601 0.93 864 661 1.10 1026 717 1.28 1194 771 1.47 1369 823 1.66 1548
3700 614 1.00 929 673 1.17 1095 728 1.36 1267 781 1.55 1445 832 1.75 1629
3800 628 1.07 997 685 1.25 1167 739 1.44 1343 791 1.64 1525 841 1.84 1712
3900 641 1.15 1069 697 1.33 1243 750 1.53 1423 801 1.72 1608 850 1.93 1799
4000 655 1.23 1144 709 1.42 1322 761 1.61 1506 812 1.82 1695 860 2.03 1890
4100 668 1.31 1223 722 1.51 1405 773 1.71 1593 822 1.92 1786 870 2.13 1984
4200 682 1.40 1305 734 1.60 1492 784 1.80 1683 833 2.02 1880 880 2.23 2082
4300 696 1.49 1392 747 1.70 1582 796 1.91 1777 844 2.12 1979 890 2.34 2184
4400 710 1.59 1482 760 1.80 1677 808 2.01 1876 855 2.23 2081 900 2.46 2290
4500 723 1.69 1577 773 1.90 1775 820 2.12 1978 866 2.35 2187 910 2.57 2400
4600 737 1.80 1675 785 2.01 1877 832 2.24 2085 877 2.46 2297 921 2.70 2514
4700 751 1.91 1778 798 2.13 1984 844 2.35 2195 889 2.59 2412 932 2.82 2633
4800 765 2.02 1885 812 2.25 2095 856 2.48 2310 900 2.71 2531 942 2.95 2756
4900 779 2.14 1996 825 2.37 2210 869 2.61 2430 912 2.85 2654 953 3.09 2883
5000 793 2.26 2112 838 2.50 2330 881 2.74 2554 923 2.98 2782 965 3.23 3014
AIRFLOW
(Cfm)
3000 830 1.39 1298 883 1.57 1466 934 1.76 1638 982 1.95 1815 1029 2.14 1996
3100 837 1.46 1363 889 1.65 1534 938 1.83 1710 986 2.03 1891 1033 2.23 2075
3200 843 1.53 1431 894 1.72 1606 944 1.91 1785 991 2.11 1969 1037 2.31 2157
3300 850 1.61 1502 901 1.80 1680 949 2.00 1863 996 2.20 2051 1041 2.40 2242
3400 858 1.69 1576 907 1.88 1758 955 2.09 1944 1001 2.29 2135 1046 2.50 2331
3500 865 1.77 1653 914 1.97 1838 961 2.18 2029 1007 2.38 2223 1051 2.60 2422
3600 873 1.86 1733 921 2.06 1922 967 2.27 2116 1012 2.48 2314 1056 2.70 2516
3700 881 1.95 1816 928 2.16 2010 974 2.37 2207 1019 2.58 2409 1062 2.80 2615
3800 889 2.04 1904 936 2.25 2100 981 2.47 2302 1025 2.69 2507 1068 2.91 2716
3900 898 2.14 1995 944 2.35 2195 988 2.57 2399 1032 2.80 2608 1074 3.03 2821
4000 907 2.24 2089 952 2.46 2293 996 2.68 2501 1038 2.91 2713 1080 3.14 2930
4100 916 2.35 2187 960 2.57 2395 1004 2.80 2607 1046 3.03 2822 1087 3.26 3042
4200 925 2.45 2289 969 2.68 2500 1011 2.91 2716 1053 3.15 2935 1094 3.39 3159
4300 934 2.57 2395 978 2.80 2610 1020 3.03 2828 1061 3.27 3052 1101 3.52 3279
4400 944 2.69 2504 986 2.92 2723 1028 3.16 2946 1068 3.40 3173 1108 3.65 3403
4500 954 2.81 2618 996 3.05 2840 1037 3.29 3067 1076 3.54 3297 — — —
4600 963 2.93 2736 1005 3.18 2962 1045 3.42 3192 1085 3.67 3426 ———
4700 974 3.07 2858 1014 3.31 3088 1054 3.56 3322 — — — — — —
4800 984 3.20 2985 1024 3.45 3219 — — — — — — — — —
4900 994 3.34 3116 1034 3.60 3353 — — — — — — — — —
5000 1005 3.49 3251 — — — — — — — — — — — —
Bhp — Brake Horsepower Input to Fan
Watts — Input Watts to Motor
*Motor drive range: 860 to 1080 rpm. All other rpms require field-
supplied drive.
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
LEGEND
0.2 0.4 0.6 0.8 1.0
1.2 1.4 1.6 1.8 2.0
EXTERNAL STATIC PRESSURE (in. wg)
EXTERNAL STATIC PRESSURE (in. wg)
NOTES:
1. Boldface indicates a field-supplied drive is required.
2. Maximum continuous bhp is 3.70.
3. See page 21 for general fan performance notes.
—32—
Table 23 — Fan Performance 549B130 — Horizontal Discharge Units; High-Static Motor (Belt Drive)*
AIRFLOW
(Cfm)
3000 523 0.58 541 592 0.73 680 657 0.88 825 718 1.05 977 775 1.22 1135
3100 536 0.63 587 603 0.78 730 666 0.94 879 726 1.11 1035 783 1.28 1196
3200 549 0.68 637 614 0.84 783 676 1.00 936 735 1.17 1096 790 1.35 1260
3300 562 0.74 689 626 0.90 839 686 1.07 996 743 1.24 1159 798 1.42 1328
3400 575 0.80 744 637 0.96 898 696 1.14 1059 752 1.31 1226 806 1.50 1398
3500 588 0.86 802 649 1.03 961 707 1.21 1125 762 1.39 1296 815 1.58 1472
3600 601 0.93 864 661 1.10 1026 717 1.28 1194 771 1.47 1369 823 1.66 1548
3700 614 1.00 929 673 1.17 1095 728 1.36 1267 781 1.55 1445 832 1.75 1629
3800 628 1.07 997 685 1.25 1167 739 1.44 1343 791 1.64 1525 841 1.84 1712
3900 641 1.15 1069 697 1.33 1243 750 1.53 1423 801 1.72 1608 850 1.93 1799
4000 655 1.23 1144 709 1.42 1322 761 1.61 1506 812 1.82 1695 860 2.03 1890
4100 668 1.31 1223 722 1.51 1405 773 1.71 1593 822 1.92 1786 870 2.13 1984
4200 682 1.40 1305 734 1.60 1492 784 1.80 1683 833 2.02 1880 880 2.23 2082
4300 696 1.49 1392 747 1.70 1582 796 1.91 1777 844 2.12 1979 890 2.34 2184
4400 710 1.59 1482 760 1.80 1677 808 2.01 1876 855 2.23 2081 900 2.46 2290
4500 723 1.69 1577 773 1.90 1775 820 2.12 1978 866 2.35 2187 910 2.57 2400
4600 737 1.80 1675 785 2.01 1877 832 2.24 2085 877 2.46 2297 921 2.70 2514
4700 751 1.91 1778 798 2.13 1984 844 2.35 2195 889 2.59 2412 932 2.82 2633
4800 765 2.02 1885 812 2.25 2095 856 2.48 2310 900 2.71 2531 942 2.95 2756
4900 779 2.14 1996 825 2.37 2210 869 2.61 2430 912 2.85 2654 953 3.09 2883
5000 793 2.26 2112 838 2.50 2330 881 2.74 2554 923 2.98 2782 965 3.23 3014
AIRFLOW
(Cfm)
3000 830 1.39 1298 883 1.57 1466 934 1.76 1638 982 1.95 1815 1029 2.14 1996
3100 837 1.46 1363 889 1.65 1534 938 1.83 1710 986 2.03 1891 1033 2.23 2075
3200 843 1.53 1431 894 1.72 1606 944 1.91 1785 991 2.11 1969 1037 2.31 2157
3300 850 1.61 1502 901 1.80 1680 949 2.00 1863 996 2.20 2051 1041 2.40 2242
3400 858 1.69 1576 907 1.88 1758 955 2.09 1944 1001 2.29 2135 1046 2.50 2331
3500 865 1.77 1653 914 1.97 1838 961 2.18 2029 1007 2.38 2223 1051 2.60 2422
3600 873 1.86 1733 921 2.06 1922 967 2.27 2116 1012 2.48 2314 1056 2.70 2516
3700 881 1.95 1816 928 2.16 2010 974 2.37 2207 1019 2.58 2409 1062 2.80 2615
3800 889 2.04 1904 936 2.25 2100 981 2.47 2302 1025 2.69 2507 1068 2.91 2716
3900 898 2.14 1995 944 2.35 2195 988 2.57 2399 1032 2.80 2608 1074 3.03 2821
4000 907 2.24 2089 952 2.46 2293 996 2.68 2501 1038 2.91 2713 1080 3.14 2930
4100 916 2.35 2187 960 2.57 2395 1004 2.80 2607 1046 3.03 2822 1087 3.26 3042
4200 925 2.45 2289 969 2.68 2500 1011 2.91 2716 1053 3.15 2935 1094 3.39 3159
4300 934 2.57 2395 978 2.80 2610 1020 3.03 2828 1061 3.27 3052 1101 3.52 3279
4400 944 2.69 2504 986 2.92 2723 1028 3.16 2946 1068 3.40 3173 1108 3.65 3403
4500 954 2.81 2618 996 3.05 2840 1037 3.29 3067 1076 3.54 3297 1115 3.79 3531
4600 963 2.93 2736 1005 3.18 2962 1045 3.42 3192 1085 3.67 3426 1123 3.93 3664
4700 974 3.07 2858 1014 3.31 3088 1054 3.56 3322 1093 3.82 3560 1131 4.08 3801
4800 984 3.20 2985 1024 3.45 3219 1063 3.71 3456 1102 3.96 3697 1139 4.23 3943
4900 994 3.34 3116 1034 3.60 3353 1073 3.85 3594 1111 4.12 3839 1148 4.38 4088
5000 1005 3.49 3251 1044 3.74 3492 1082 4.01 3737 1119 4.27 3986 1156 4.55 4238
Bhp — Brake Horsepower Input to Fan
Watts — Input Watts to Motor
*Motor drive range: 830 to 1130 rpm. All other rpms require field-
supplied drive.
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts
LEGEND
0.20.40.60.81.0
1.21.41.61.82.0
EXTERNAL STATIC PRESSURE (in. wg)
EXTERNAL STATIC PRESSURE (in. wg)
NOTES:
1. Boldface indicates a field-supplied drive is required.
2. Maximum continuous bhp is 5.25.
3. See page 21 for general fan performance notes.
—33—
PRE-START-UP
WARNING: Failure to observe the following warn-
ings could result in serious personal injury:
1. Follow recognized safety practices and wear
protective goggles when checking or servicing
refrigerant system.
2. Do not operate th e compressor or provide any
electric power to the unit unless the compressor
terminal cover is in place and secured.
3. Do not remove the compressor terminal cover
until all electrical sources are disconnected and
tagged.
4. Relieve all pressure from the system before
touching or disturbing anything inside the compressor termin al b ox if a re fr ig e ran t le ak is suspected around the compressor terminals. Use
accepted methods to recover refrigerant.
5. Never attempt to repair a sol dered connection
while the refrigerant system is under pressure.
6. Do not use a torch to remove any component.
The system contains oil and refrigerant under
pressure. To remove a compone nt, wear prote ctive goggles and proceed as follows :
a. Shut off electrical power to the unit.
b. Recover refrigerant to relieve all pressure
from the system using both high-pressure
and low-pressure ports.
c. Cut the component connection tubing with a
tubing cutter, and remove the component
from the unit.
d. Carefully unsweat the remaining tubing
stubs when necessary. Oil can ignite when
exposed to torch flame.
Proceed as follows to ins pect and prep are the unit f or initial
start-up:
1. Remove all access panels.
2. Read and follow instructions on all WARNING, CAUTION, and INFORMATION labels attached to or
shipped with the unit.
3. Make the following inspectio ns:
a. Inspect for shipping and handling damages such
as broken lines, loose parts, or disconnected wires.
b. Inspect for oil at all refrigerant tubing connections
and on the unit base. Detecting oil generally i ndicates a refrigerant leak. Leak-test all refrigerant
tubing connections using an electronic leak detector, halide torch, or liquid-soap solution.
c. Inspect all field-wiring a nd factory-wiring connec-
tions. Be sure that connections are completed and
tight. Ensure that electrical component wiring
does not come in contact with refrigerant tubing.
d. Inspect coil fins. If damaged during shipping and
handling, carefully straighten the fins with a fin
comb.
4. Verify the following conditions:
a. Make sure that the outdoor-fan blades are cor-
rectly positioned in the fan orifice. Refer to the
Outdoor-Fan Adjustment section on page 37 for
more details.
b. Make sure that the air filter(s) is in place.
c. Make sure that the condensate drain trap is filled
with water to ensure proper drainage.
d. Make sure that all tools and miscellaneous loose
parts have been removed.
START-UP
I. UNIT PREPARATION
Make sure that the unit has been installed in accordance
with these installation instructions and applicable codes.
Make sure that the Start-Up Checklist, located on the back
page of this manual, has been completed and filled out.
II. RETURN-AIR FILTERS
Make sure that the correct air filters are installed in the unit
(see Table 1). Do not operate the unit without return-air
filters.
III. OUTDOOR-AIR INLET SCREENS
Outdoor-air inlet screen must be in place b efore operat ing the
unit.
IV. COMPRESSOR MOUNTING
Compressors are internally spring mounted. Do not loosen or
remove compressor holddown bolts.
V. INTERNAL WIRING
Check all electrical connections in the unit control boxes;
tighten as required.
VI. REFRIGERANT SERVICE PORTS
Each refrigerant system has 3 Schrader-type service gage
ports: one on the suction line, one on the cooling mode liquid
line, and one on the compressor discharge line.
Be sure that caps on the ports are tight. The port on the cooling mode liquid line and one port on the discharge line have
protective devices installed on them.
A. High-Flow Refrigerant Valves
These are two high flow va lves; on e is loca ted on th e hot gas
tube coming out of the compressor. The second is located on
the suction tube going in to the compressor. Large black plastic caps with O-rings inside identify these valves. No field
access to these valves is available at this time. Ensure that
the plastic caps remain on the valves and a re tight or the
possibility of refrigerant leakage could occur.
VII. COMPRESSOR ROTATION
It is important to be certain that the scroll compressor is
rotating in the proper direction. To determine whether or not
compressor is rotating in the proper direction:
1. Connect service gages to the suction and discharge
pressure fittings.
2. Energize the compressor.
3. The suction pressure should drop and the discharge
pressure should rise, as is normal on any start-up.
If the suction pressure does not drop and the discharge pressure does not rise to normal levels:
1. Note that the indoor fan is probably also rotating in
the wrong direction.
2. Turn off power to the unit and tag disconnect.
3. Reverse any two of the unit power leads.
4. Turn on power to the unit and re-energize compressor.
The suction and discharge pressure levels should now move
to their normal start-up levels.
NOTE: When the compressor is rotating in the wrong direction, the unit makes more noise and does not provide heating/
cooling. Compressor failure will occur if rotation direction is
not corrected.
—34—
VIII. COOLING
To start the unit, turn on main power supply. Set the system
selector switch at COOL pos ition and fan switch at AUTO
position. Adjust the thermostat to a setting below room
temperature. The compressor, reversing valve, outdoor-fan
contactor and indoor blower motor are energized.
Check the unit charge. Refer to Refrigerant Charge section
on page 37.
Reset the thermostat at a position above room tempera ture.
The compressor will shut off.
A. To Shut Off Unit
Set the system selector switch at OFF position. Resetting the
thermostat at a position above room temperature shuts unit
off temporarily until the space temperature exceeds the thermostat setting.
Compressor restart is a ccomplished by manual reset a t the
thermostat by turning the selector switch to OFF position
and then ON position.
IX. HEATING
To start the unit, turn on the main power supply.
Set thermostat at HEAT position and a setting above room
temperature, and set fan at AUTO. position.
The first stage of the thermostat energizes the indoor fan
motor, compress or, and outdoor fan; the second sta ge energizes the electr ic hea ter el emen ts i f inst all ed. Check h ea ti ng
effects at air supply grille(s).
If accessory el ectric heaters do not energize, reset the li mit
switch (located on indoor-fan scroll) by press ing the button
located between the terminals on the switch.
A. To Shut Off Unit
Set the system selector switch at OFF position. Resetting the
heating select or lever below room temp erature temporarily
shuts the unit off until the space temperature falls below the
thermostat setting.
X. SAFETY RELIEF
A soft solder joint in the suction line at the loss-of-charge/
low-pressure switch fitting provides pressure relief under
abnormal temperature and pressure conditions.
XI. VENTILATION (Continuous Fan)
Set the fan and system selector switches at ON and OFF
positions, respective ly. The indoor fan opera tes con tinuousl y
to provide constant air circulation.
XII. OPERATING SEQUENCE
A. Cooling, Units without Economizer
When thermost at calls for cooli ng, terminals G and Y1 ar e
energized. The indoor-fan contactor (IFC), reversing valve
solenoid (RVS1) and compressor contactor no. 1 (C1) are
energized and ind oor-fan motor, compressor no. 1, and outdoor fan(s) starts. The outdoor-fan motor(s) runs continuously while unit is cooling. If the thermostat calls for a
second stage of cooling by energ izing Y2, c ompres sor conta ctor no. 2 (C2) and reversing valve solenoid (RVS2) are energized and compressor no. 2 starts.
B. Heating, Units without Economizer
Upon a request for heating from the space thermostat, terminal W1 will be ener gized with 24 v. The IFC, outdoor-fan
contactor (OFC), C1, and C2 wil l be ener gized. Th e reve rs ing
valves switch position and the indoor fan, outdoor fan(s),
compressor no. 1, and compressor no. 2 are energized.
If the space temperature continues to fall while W1 is
energized, W2 will be energized with 24 v, and the heater
contactor(s) (HC) will be energized, which will energize the
electric heater(s).
When the space thermostat is satisfied, W2 will be deenergized first, and the electric heater(s) will be deenergized.
Upon a further rise in space temperature, W1 will be
deenergized, and the reversing valve solenoids (RVS1 and
RVS2) will be energized.
C. Cooling, Units With EconoMi$er IV
When free cool ing is not available, the com pressors will be
controlled b y th e zo ne th ermost at. When f re e cool ing i s a vailable, the outdoor-air damper is modulated by the
EconoMi$er IV control to provide a 50 to 55 F supply-air
temperature into the zone. As the supply-air temperature
fluctuates above 55 or be lo w 5 0 F, the dampers will be modulated (open or close) to bring the supply-air temperature
back within the set point limits.
For EconoMi$er IV operation, there must be a thermostat
call for the fan (G). This will move the damper to its minimum position during the occupied mode.
Above 50 F supply-air temperature, the dampers will modulate from 100% open to the minimum open position. From
50 F to 45 F supply-air temperature, the dampers will maintain at the minimum open position. Below 45 F the dampers
will be completely shut. As the supply-air temperature rises,
the dampers will come back open to the minimum open position once the supply air temperature rises to 48 F.
If optional power exhaust is installed, as the outdoor-air
damper opens and closes, the power exhaust fans will be
energized and deenergized.
If field-installed accessory CO
sensors are connected to the
2
EconoMi$er IV control, a demand controlled ventilation
strategy will begin to opera te. As the CO
increases abo ve the CO
set point, the minimum position of
2
level in the zone
2
the damper will be increased proportionally. As the CO2 level
decreases because of the increase in fresh air, the outdoor-air
damper will be proportionally closed. Damper position will
follow the higher demand condition from DCV mode or free
cooling mode.
Damper movement from full closed to full open (or vice
versa) will take between 1
1
/2 and 21/2 minutes.
If free cooling can be used as determined from the appropriate changeover com mand (switch, dr y bulb, enthalpy curve,
differential dry bulb, or differential enthalpy), a call for cooling (Y1 closes at the thermostat) will cause the control to
modulate the dampers open to maintain the supply a ir temperature set point at 50 to 55 F.
As the supply-air temperature drops below the set point range
of 50 to 55 F, the control will modulate the outdoor-air dampers closed to maintain the proper supply-air temperatur e .
D. Heating, Units with EconoMi$er IV
When the room temperature calls for heat through terminal
W1, the indoor fan contactor (IFC) and he ater contac tor no . 1
(HC1) are energized. On units equipped for 2 stages of heat,
when additional heat is needed, heater contactor no. 2 is
energized through W2. The ec onomizer damper moves to the
minimum position. When the thermostat is satisfied, the
damper moves to the fully closed position.
—35—
E. Defrost
When the temperature of the outdoor coil drops below 28 F as
sensed by the defrost thermostat (DFT2) and the defrost
timer is at the end of the timed period (adjustable at 30, 50, or
90 minutes), the reversing valve solenoids (RVS1 and RVS2)
are energized and the OFC is deenergized. This switches the
position of the reversing valves and shuts off the outdoor fans .
The electric heaters (if installed) will be energ iz ed.
The unit continues to defrost until the coil temperature as
measured by DFT2 reaches 65 F, or the defrost cycle completes a 10-minute period.
During the Defrost mode, if circuit 1 defrosts first, RVS1 will
oscillate betw een Heati ng and Coo ling mod es (dep ending on
DFT1 switch position) until the Defrost mode is complete.
At the end of the defrost cycle, the electric heaters (if
installed) will be dee nergized; the reversing valves deenergize and the outdoor-fan motors will be energized. The unit
will now operate in the Heating mode.
If the space thermostat is satisfied during a defrost cycle, the
unit will continue in the Defrost mode until the time or temperature constraints are s atisfied.
SERVICE
CAUTION: When servicing the unit, shut off all
electrical power to the unit a nd tag to avoid shock hazard or injury from rotating parts.
Clean 2-row coils as follows:
1. Turn off the unit power and install lockout tag on
disconnect.
2. Remove the top panel screws on the outdoor end of
the unit.
3. Remove the outdoor coil corner post. See Fig. 34. To
hold the top panel open, place the coil corner post
between the top panel and center post. See Fig. 35.
4. Remove the device holding the coil sect ions together
at the return end of the outdoor coil. Carefully separate the outer coil section 3 to 4 in. from the inner coil
section. See Fig. 36.
5. Use a water hose or other suitable equipment to flush
down between the 2 coil s ections to remove dirt and
debris. Clean the outer surfaces with a stiff brush in
the normal manner.
6. Secure the sectio ns together. Reposition the coil sections, and remove the c oil corner post from be tween
the top panel and center post. Install the coil corner
post and coil center post, and replace all screws.
I. CLEANING
Inspect the unit interior at the beginning of each heating
and cooling season or as operating con ditions require.
A. Indoor Coil
1. Turn the unit p o wer o ff and install lockout tag o n di sconnect. Remove the filter access panel and indoor
coil access panel.
2. If the economizer or accessory two-position damper is
installed, remove the economizer/two-position damper
by disconnecting the economizer plug and removing
mounting screws. Refer to Accessory Economizer or
Two-Position Damper Installation Instructions for
more details.
3. Slide filters out of unit.
4. Clean the coil using a commercial coil cleaner or dishwasher detergent in a pressurized spray canister.
Wash both sides of the coil and flush with clean
water. For best results, backflush toward the returnair section to remove for eign material.
5. Flush the condensate pan after completion.
6. Reinstall the economizer/two-position damper and
filters.
7. Reconnect wiring.
8. Replace the access panels.
B. Outdoor Coil
Inspect the coil monthly. Clean the outdoor coil annually , and
as required by location and outdoor-air conditions.
Fig. 34 — Cleaning Outdoor Coil
Fig. 35 — Propping Up Top Panel
—36—
Fig. 36 — Separating Coil Sections
C. Condensate Drain
Check and clean each year at the start of the cooling season.
In winter, protect against freeze-up.
D. Filters
Clean or replace at the start of each heating and cooling
season, or more often if operating conditions require it.
Replacement filters must be the same dimensions as original
filters.
E. Outdoor-Air Inlet Screen
Clean the screen with stream or hot water and a mild detergent. Do not use disposable filters in place of screens.
II. LUBRICATION
A. Compressors
Each compressor is charged with the correct amount of oil at
the factory.
B. Fan-Motor Bearings
Fan-motor bearings are permanently lubricated. No lubrication of outdoor or indoor-fan motors is required.
III. OUTDOOR-FAN ADJUSTMENT (Fig. 37)
1. Shut off the unit power supply, and install lockout tag
on disconnect.
2. Remove the outdoor-fan assembly (grille, motor,
motor cover, and fan) and loosen the fan hub
setscrews.
3. Adjust the fan height as shown in Fig. 37.
4. Tighten the setscrews and replace the outdoor-fan
assembly.
IV. BLOWER BELT ADJUSTMENT
Inspect the blower belt for wear, proper belt tension, and
pulley alignment as conditions require or at the beginning of
each heating and air condition ing season.
Refer to Step 7 — Adjust I ndoor-Fan Speed on page 19 for
adjustment and alignment procedu r e.
V. ECONOMI$ER IV ADJUSTMENT
Refer to Optional EconoMi$er IV section on page 12.
VI. HIGH-PRESSURE SWITCH
Located on the compressor hot gas line is a high-pressure
switch with a Schrader core depressor. This switch opens at
428 psig and closes at 320 psig. No adjustment is necessary.
Refer to Table 1.
VII. LOSS OF CHARGE SWITCH
Located on the outdoor liquid line is a low-pressure switch
which functions as a loss-of-charge switch. This switch contains a Schrader core depressor. This switch opens at 7 psig
and closes at 22 psig. No adjustment is necessary. Refer to
Table 1.
VIII. FREEZESTAT
Located on the “hair pin” end of the indoor coil is a bimetal
temperature s ensing switch. T his swi tch prot ects the i ndoor
coil from free ze- up due to lack of airflow. The switch opens at
30 F and closes at 45 F. No adjustment is necessary. Refer to
Table 1.
IX. REFRIGERANT CHARGE
The amount of re fri ger an t char ge i s li s ted o n the u nit na m eplate (also refer to Table 1).
Unit panels must be in place when the unit is operating during charging procedure. The unit must operate for a minimum of 10 minutes before checking or adjusting the charge.
A. No Charge
Use standard evacuating techniques. After evacuating the
system to 500 microns, weigh in the specified amount of
refrigerant (refer to Table 1).
B. Low Charge Cooling
Use Cooling Charging Charts, Fig. 38-40. Vary refrigerant
until the conditions of the appropriate chart are met. Note
that charging charts are different from the type normally
used. The charts are b ased on charging the units to the correct superheat for the various operat ing cond iti ons. An accurate pressure gage and temperature sensing device are
required. Connect the pressure gage to th e service port on
the suction line. Mount the temperature sensing device on
the suction line and insulate it so that outdoor ambient temperature does not affect the reading. Indoor-air cfm must be
within the normal operating range of the unit.
UNIT VOLTAGE ‘‘A’’ in.
208/230 V 2.75
460 V 3.50
Fig. 37 — Outdoor Fan Adjustment
—37—
C. To Use Cooling Charging Charts
Take the outdoor ambient temperature and read the suction
pressure gage. Refer to the appropriate chart to determine
what the suction temperature should be. If the suction temperature is high, add refrigerant. If the suction temper ature
is low, carefully recover some of th e charge. Recheck the s uction pressure as the charge is adjusted.
EXAMPLE: (Fig. 38; Circuit 1)
Outdoor Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . .85 F
Suction Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70 psig
Suction Temperature should be . . . . . . . . . . . . . . . . . . . .51 F
(Suction Temperature may vary ± 5° F.)
D. Heating Charge
Do not attempt to adjust the refrigerant charge while the
unit is operating in the Heating mode. If the charge amount
is believed to be incorrect, recover refrigerant and weigh in
the amount listed on the unit rating plate.
X. TYPICAL WIRING
Refer to Fig. 41 for a typical unit wiring diagram.
XI. REPLACEMENT PARTS
A complete list of replacement parts may be obtained from
any Bryant distributor.
100
689
95
621
90
85
552
80
75
483
70
SUCTION LINE PRESSURE PSIG
65
SUCTION LINE PRESSURE (KILOPASCALS)
414
60
42
32
47
SUCTION LINE TEMPERATURE DEG F
5
10
SUCTION LINE TEMPERATURE DEG F
57
52
62
15
Fig. 39 — Cooling Charging Chart, 549B102
OUTDOOR
TEMP
C
F
64
125
46
115
41
105
35
95
29
85
24
75
67
72
77
20
25
Fig. 38 — Cooling Charging Chart, 549B090
Fig. 40 — Cooling Charging Chart, 549B120
—38—
AWG — American Wire Gage
C—Contactor, Compressor
CAP — Capacitor
CB — Circuit Breaker
CLO — Compressor Lockout
COMP — Compressor Motor
DFT — Defrost Thermostat
EQUIP — Equipment
FPT — Freeze Up Protection Thermostat
FU — Fuse
GND — Ground
HC — Heat Contactor
HPS — High-Pressure Switch
HR — Heater Relay
IFC — Indoor-Fan Contactor
IFM — Indoor-Fan Motor
IFMOVL — Indoor Fan Motor Overload Switch
LPS — Low-Pressure Switch
Fig. 41 — Typical Wiring Schematic (208/230-3-60 Unit Shown)
LEGEND
LSM — Limit Switch
MCA — Minimum Circuit Amps
OFC — Outdoor-Fan Contactor
OFM — Outdoor-Fan Motor
P—Plug
PL — Plug Assembly
QT — Quadruple Terminal
RVS — Reversing Valve Solenoid
SAT — Supply Air Temperature Sensor
TB — Terminal Board
TRAN — Transformer
Field Splice
Marked Wire
Terminal (Marked)
Terminal (Unmarked)
—39—
Terminal Block
Terminal Econ 2 Position Board
Splice
Splice (Marked)
Factory Wiring
Field Control Wiring
Field Power Wiring
Accessory or Optional Wiring
To indicate common potential only;
not to represent wiring.
TROUBLESHOOTING
I. UNIT TROUBLESHOOTING
Refer to Table 24 for troubleshooting information.
Table 24 — Heating and Cooling Troubleshooting
PROBLEM CAUSE REMEDY
Compressor and
Outdoor Fan
Will Not Start.
Compressor Will Not
Start But Outdoor Fan
Runs.
Compressor Cycles
(Other Than Normally
Satisfying Thermostat).
Compressor Operates
Continuously.
Excessive Head
Pressure
Head Pressure
Too Low.
Excessive Suction
Pressure.
Suction Pressure
Too Low.
Power failure. Call power company.
Fuse blown or circuit breaker tripped. Replace fuse or reset circuit breaker.
Defective thermostat, contactor, transformer, or control relay. Replace component.
Insufficient line voltage. Determine cause and correct.
Incorrect or faulty wiring. Check wiring diagram and rewire correctly.
Thermostat setting too high. Lower thermostat setting below room
High-pressure switch tripped. See problem ‘‘Excessive head pressure.’’
Low-pressure switch tripped. Check for leaks, repair, and recharge.
Freeze-up protection thermostat tripped. See problem ‘‘Suction pressure too low.’’
Faulty wiring or loose connections in compressor circuit. Check wiring and repair or replace.
Compressor motor burned out, seized, or internal
overload open.
Defective overload. Determine cause and replace.
One leg of 3-phase power dead. Replace fuse or reset circuit breaker.
Refrigerant overcharge or undercharge. Recover refrigerant, evacuate system, and
Defective compressor. Replace and determine cause.
Insufficient line voltage. Determine cause and correct.
Blocked outdoor coil or dirty air filter. Determine cause and correct.
Defective overload. Determine cause and replace.
Defective thermostat. Replace thermostat.
Faulty outdoor-fan (cooling) or indoor-fan (heating) motor or
capacitor.
Restriction in refrigerant system. Locate restriction and remove.
Dirty air filter. Replace filter.
Unit undersized for load. Decrease load or increase unit size.
Thermostat set too low. Reset thermostat.
Low refrigerant charge. Locate leak, repair, and recharge.
Leaking valves in compressor. Replace compressor.
Air in system. Recover refrigerant, evacuate system, and
Outdoor coil dirty or restricted. Clean coil or remove restriction.
Dirty air filter. Replace filter.
Dirty outdoor coil. Clean coil.
Refrigerant overcharged. Remove excess refrigerant.
Air in system. Recover refrigerant, evacuate system, and
Condensing air restricted or air short-cycling. Determine cause and correct.
Low refrigerant charge. Check for leaks, repair, and recharge.
Compressor valves leaking. Replace compressor.
Restriction in liquid tube. Remove restriction.
High heat load. Check for source and eliminate.
Compressor valves leaking. Replace compressor.
Refrigerant overcharged. Recover excess refrigerant.
Dirty air filter (cooling) or dirty outdoor coil (heating). Replace filter or clean coil.
Low refrigerant charge. Check for leaks, repair, and recharge.
Metering device or low side restricted Remove source of restriction.
Insufficient indoor airflow (cooling mode). Increase air quantity. Check filter and replace if
Temperature too low in conditioned area. Reset thermostat.
Field-installed filter drier restricted. Replace.
Outdoor ambient temperature below 25 F. Install low-ambient kit.
temperature.
Determine cause. Replace compressor.
Determine cause.
recharge to nameplate.
Replace.
recharge.
recharge.
necessary.
—40—
II. ECONOMI$ER IV TROUBLESHOOTING
See Table 25 for EconoMi$er IV logic.
A functiona l view of the EconoMi$er IV is shown in Fig. 42.
Typical settings, sensor ranges, and jumper positions are also
shown. An EconoMi$er IV simulator program is available
from Bryant to help with EconoMi$er IV training and
troubleshooting.
A. EconoMi$er IV Preparation
This procedure is used to prepare the EconoMi$er IV for
troubleshooting. No troubleshooting or testing is done by
performing the following procedure.
NOTE: This procedure requires a 9-v battery, 1.2 kilo-ohm
resistor, and a 5.6 kilo-ohm resistor which are not supplied
with the EconoMi$er IV.
IMPORTANT:
Be sure to record the positions of all potentiometers
before starting troubleshooting.
1. Disconnect power at TR and TR1. All LEDs should be
off. Exhaust fan contacts should be open.
2. Disconnect device at P and P1.
3. Jumper P to P1.
4. Disconnect wires at T and T1. Place 5.6 kilo-ohm
resistor across T and T1.
5. Jumper TR to 1.
6. Jumper TR to N.
and +.
R
and +.
O
7. If connected, remove sensor from terminals S
Connect 1.2 kilo-ohm 4074EJM checkout resistor
across terminals S
and +.
O
8. Put 620-ohm resistor across terminals S
9. Set minimum position, DCV set point, and exhaust
potentiometers fully CCW (counterclockwise).
10. Set DCV maximum position potentiometer fully CW
(clockwise).
11. Set enthalpy potentiometer to D.
12. Apply power (24 vac) to terminals TR and TR1.
B. Differential Enthalpy
To check differential enthalpy:
1. Make sure Econ o Mi $er IV pr ep ar at io n pro ce d ur e h as
been performed.
2. Place 620-ohm resistor across S
3. Place 1.2 kilo-ohm resistor across S
and +.
O
and +. The Free
R
Cool LED should be lit.
4. Remove 620-ohm resistor across S
and +. The Free
O
Cool LED should turn off.
5. Return EconoMi$er IV settings and wiring to normal
after completing troubleshooting.
C. Single Enthalpy
To check single enthalpy:
1. Make sure Econ o Mi $er IV pr ep ar at io n pro ce d ur e h as
been performed.
2. Set the enthalpy potentiometer to A (fully CCW). The
Free Cool LED should be lit .
3. Set the enthalpy potentiometer to D (fully CW). The
Free Cool LED should turn off.
4. Return EconoMi$er IV settings and wiring to normal
after completing troubleshooting.
D. DCV (Demand Controlled Ventilation) and Power
Exhaust
To check DCV and Power Exhaust:
1. Make sure Econ o Mi $er IV pr ep ar at io n pro ce d ur e h as
been performed.
2. Ensure terminals AQ and AQ 1 a r e o pen . The LE D for
both DCV and Exhaust should be off. The actuator
should be fully closed.
3. Connect a 9-v battery to AQ (positive node) and AQ1
(negative node). The LED for both DCV and Exhaust
should turn on. The a ctua tor s hou ld dri ve to be tween
90 and 95% open.
4. Turn the Exhaust potentiometer CW until the
Exhaust LED turns off. The LED should turn off
when the potentiometer is approximately 90%. The
actuator should remain in position.
5. Turn the DCV set point potentiometer CW until the
DCV LED turns off. The DCV LED should turn off
when the potentiometer is approximately 9 v. The
actuator should drive fully closed.
6. Turn the DCV and Exhaust potentiometers CCW
until the Exhaust LED turns on. The exhaust contacts will close 30 to 120 seconds afte r the Exhaust
LED turns on.
7. Return EconoMi$er IV settings and wiring to norm al
after completing troubleshooting.
E. DCV Minimum and Maximum Position
To check the DCV minimum and maximum position:
1. Make sure Econ o Mi$ er I V pr epa ra tio n pr oce dur e h as
been performed.
2. Connect a 9-v battery to AQ (positive node) and AQ1
(negative node). Th e DCV LED should turn on. The
actuator should drive to between 90 and 95% open.
3. Turn the DCV Maximum Position potentiometer to
midpoint. The actuator should drive to between 20
and 80% open.
4. Turn the DCV Maximum Position potentiometer to
fully CCW. The actuator should drive fully closed.
5. Turn the Minimum Position potentiometer to midpoint. The act uator should drive to be tween 20 and
80% open.
6. Turn the Minimum Position Potentiometer fully CW.
The actuator should drive fully open.
7. Remove the jumper from TR and N. The actuator
should drive fully closed.
8. Return EconoMi$er IV settings and wiring to norm al
after completing troubleshooting.
F. Supply-Air Input
To check supply-air input:
1. Make sure Econ o Mi$ er I V pr epa ra tio n pr oce dur e h as
been performed.
2. Set the Enthalpy potentiometer to A. The Free Cool
LED turns on. The actuator should drive to between
20 and 80% open.
3. Remove the 5.6 kilo-ohm resistor and jumper T to T1.
The actuator should drive fully open.
4. Remove the jumper across T and T1. The actuator
should drive fully closed.
5. Return EconoMi$er IV settings and wiring to norm al
after completing troubleshooting.
G. EconoMi$er IV Troubleshooting Completion
This procedure is used to return the EconoMi$er IV to operation. No trouble shooting or testi ng is done by performing the
following procedure.
1. Disconnect power at TR and TR1.
2. Set enthalpy potentiometer to previous sett ing.
—41—
3. Set DCV maximum position po tentiometer to previous setting.
4. Set minimum position, DCV set point, and exhaust
potentiometers to previous settings.
5. Remove 620-ohm resistor from terminals S
and +.
R
6. Remove 1.2 kilo-ohm checkout resistor from terminals SO and +. If used, reconnect sensor from terminals SO and +.
Table 25 — EconoMi$er IV Input/Output Logic
INPUTS OUTPUTS
Demand Control
Ventilation (DCV)
Below set
(DCV LED Off)
Above set
(DCV LED On)
*For single enthalpy control, the module compares outdoor enthalpy
to the ABCD set point.
†Power at N terminal determines Occupied/Unoccupied setting:
24 vac (Occupied), no power (Unoccupied).
**Modulation is based on the supply-air sensor signal.
††Modulation is based on the DCV signal.
High
(Free Cooling LED Off)
Low
(Free Cooling LED On)
High
(Free Cooling LED Off)
Low
(Free Cooling LED On)
Enthalpy*
Outdoor Return
Low On On On On Minimum position Closed
High On On On Off Modulating** (between min.
Low On On On On Modulating†† (between min.
High On On On Off Modulating*** Modulating†††
Y1 Y2
On Off On Off
Off Off Off Off
On Off Off Off
Off Off Off Off Minimum position Closed
On Off On Off
Off Off Off Off
On Off Off Off
Off Off Off Off
7. Remove jumper from TR to N.
8. Remove jumper from TR to 1.
9. Remove 5.6 kilo-ohm resistor from T and T1. Reconnect wires at T and T1.
10. Remove jumper from P to P1. Rec onnect device at P
and P1.
11. Apply power (24 vac) to terminals TR and TR1.
Compressor N Terminal†
Stage1Stage
2
position and full-open)
position and DCV maximum)
***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).
†††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).
Occupied Unoccupied
Damper
Modulating** (between
closed and full-open)
Modulating†† (between
closed and DCV
maximum)
Fig. 42 — EconoMi$er IV Functional View
—42—
Access panels
12
Barometric flow capacity 14
Charging chart, refrigerant 38
Clearance 2, 5
CO2 sensor
Configuration 18
Settings 17, 19
Compressor
Lubrication 37
Mounting 34
Rotation 34
Condensate drain
Cleaning 37
Location 3
Control circuit
Wiring 10
Wiring raceway 11
Convenience outlet 7, 8
Defrost board 10, 11
Demand control ventilation 18
Dehumidification 19
Dimensions 2, 5
Ductwork 1
EconoMi$er IV 12-18
Adjustment 37
Components 12
Control mode 15
Damper movement 18
Demand ventilation control 18
Dry bulb temperature sensor 15
Enthalpy sensor 15
Troubleshooting 41, 42
Usage 15
Wiring 14
Electrical connections 6
Electrical data 7-9
Electric heat 6
Enthalpy changeover set points 17
Factory-installed options
Convenience outlet 7, 8
EconoMi$er IV 12-18
Manual outdoor air damper 10-12
Filter
Cleaning 37
Installation 13
Size 4
Freeze protection thermostat 4, 37
Heat anticipator settings 10
High flow valves 34
High pressure switch 4, 37
Horizontal units 1
Indoor air quality sensor 16
Indoor coil 4
Cleaning 36
Indoor fan motor
Lubrication 37
Motor data 20
Performance 22-33
Pulley adjustment 20
Pulley setting 4, 21
Speed 4
Low pressure switch 4, 37
Manual outdoor air damper 10-12
Mounting
Compressor 34
Unit 3, 4
Non-fused disconnect switch 10
INDEX
Operating sequence
Cooling 35
Defrost 36
EconoMi$er IV 35
Heating 35
Outdoor air hood 12, 13
Outdoor air temperature sensor 13
Outdoor air inlet screens
Cleaning 37
Outdoor coil 4
Cleaning 36
Outdoor fan 4
Adjustment 37
Physical data 4
Power supply
Wiring 6
Pressure, drop
Heater 21
Pressure switches
High pressure 4, 37
Low pressure 4, 37
Pre-start-up 34
Refrigerant
Charge 4, 37
Type 4
Refrigerant service ports 34
Replacement parts 38
Return air filter 4, 34
Return air temperature sensor 16
Rigging unit 3
Roof curb
Assembly 1
Dimensions 2
Connector package 2
Leveling tolerances 3
Weight 4
Safety considerations 1
Safety relief 35
Service 36-39
Service ports 34
Slab mount 1
Start-up 34-36
Start-up checklist CL-1
Thermostat 10, 11, 18
Troubleshooting 40-42
Ventilation 35
Wei gh t
Corner 5
EconoMi$er IV 4, 5
Unit 4, 5
Wiring
EconoMi$er IV 14
Power connections 6
Thermostat 11
Unit 39
—43—
Copyright 2005 Bryant Heating & Cooling Systems Printed in U.S.A. CATALOG NO. 04-53549002-01
START-UP CHECKLIST
(Remove and Store in Job File)
I. PRELIMINARY INFORMATION
MODEL NO.:_______________________________________
DATE: _____________________________________________
SERIAL NO. _________________________________________ __
TECHNICIAN: _________________________________________
BUILDING LOCATION: ________________________________
II. PRE-START-UP (insert checkmark in box as each item is completed)
VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTALLATION INSTRUCTIONS
CHECK ALL ELECTRICAL CONNECTIONS AND TERMINALS FOR TIGHTNESS
ENSURE ELECTRICAL WIRING DOES NOT COME IN CONTACT WITH
REFRIGERANT TUBING OR SHARP EDGES
CHECK THAT RETURN (INDOOR) AIR FILTERS ARE CLEAN AND IN PLACE
VERIFY THAT UNIT INSTALLATION IS LEVEL
CHECK FAN WHEEL AND PROPELLER FOR LOCATION IN HOUSING/ORIFICE
AND SETSCREW TIGHTNESS
CHECK PULLEY ALIGNMENT AND BELT TENSION PER INSTALLATION INSTRUCTIONS
VERIFY CORRECT ROTATION OF SCROLL COMPRESSORS
VERIFY INSTALLATION OF ECONOMI$ER IV HOOD (IF EQUIPPED)
CUT ALONG DOTTED LINE
III. START-UP
ELECTRICAL
SUPPLY VOLTAGE L1-L2 L2-L3 L3-L1
CIRCUIT NO. 1 COMPRESSOR AMPS L1 L2 L3
CIRCUIT NO. 2 COMPRESSOR AMPS L1 L2 L3
INDOOR FAN AMPS L1 L2 L3
TEMPERATURES
OUTDOOR-AIR TEMPERATURE DB WB
RETURN-AIR TEMPERATURE DB WB
COOLING SUPPLY AIR DB WB
PRESSURES (COOLING MODE)
REFRIGERANT SUCTION, CIRCUIT 1 PSIG F
REFRIGERANT SUCTION, CIRCUIT 2 PSIG F
REFRIGERANT DISCHARGE, CIRCUIT 1 PSIG F
REFRIGERANT DISCHARGE, CIRCUIT 2 PSIG F
VERIFY REFRIGERANT CHARGE USING COOLING CHARGING CHARTS ON PAGE 38.
CUT ALONG DOTTED LINE
GENERAL
SET ECONOMI$ER IV MINIMUM VENT AND CHANGEOVER SETTINGS TO MATCH JOB REQUIREMENTS
(IF EQUIPPED)
Copyright 2005 Bryant Heating & Cooling Systems Printed in U.S.A. CL-1 CATALOG NO. 04-53549002-01
Loading...