Lennox GCS16 Series User manual

SERVICE GCS16
UNIT
INFORMATION 6-25 TON UNITS
Page 1 1994 Lennox Industries Inc.
Corp. 9322-L3 Litho U.S.A.
GCS16 SERIES
GCS16 series units in the 6 ton and larger cooling size are
packaged combination two-stage gas heat / two-stage dx
cool units designed for commercial applications. Gas heat
sections are designed with Lennox' aluminized steel tube
heat exchangers ranging in size from 135,000 to 470,000
Btuh input. Units are designed for rooftop or side of building
installation with either bottom or horizontal discharge and
return air.
For commercial applications, the GCS16 is designed to ac
cept any of several different thermostat control systems with
minimum field wiring. Control options such as economizer,
warm up kit, Honeywell W973 control, Honeywell W7400
control or other field specified controls connect to the unit
with jack-plugs. When plugged in" the controls become an
integral part of the unit wiring. Units are also equipped with a
low voltage terminal strip to facilitate thermostat field wiring.
All specifications in this manual are subject to change.
GCS16-1853 SHOWN
TABLE OF CONTENTS
Introduction Page 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications Pages 2-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Data Page 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Blower Data Pages 11-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air Resistance Data Pages 17-18. . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Arrangement Pages 18-22. . . . . . . . . . . . . . . . . . . . . . . . . . . .
I- APPLICATION Page 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
II- UNIT COMPONENTS Pages 22-41. . . . . . . . . . . . . . . . . . . . . . . . .
Control Box Components Pages 22-25. . . . . . . . . . . . . . . . . . . . . .
Heating Components Pages 26-34. . . . . . . . . . . . . . . . . . . . . . . . . .
Cooling Components Pages 34-40. . . . . . . . . . . . . . . . . . . . . . . . . .
Blower Compartment Components Pages 40-41. . . . . . . . . . . . . .
III- ELECTRICAL CONNECTIONS Page 41. . . . . . . . . . . . . . . . . . . .
IV- PLACEMENT AND INSTALLATION Page 41. . . . . . . . . . . . . . .
V- START UP - OPERATION Pages 41-42. . . . . . . . . . . . . . . . . . . . .
Preliminary Checks Page 41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cooling / Heating Start Up Pages 41-42. . . . . . . . . . . . . . . . . . . . . .
Safety or Emergency Shut Down Page 42. . . . . . . . . . . . . . . . .
VI- COOLING SYSTEM CHECKS Page 42. . . . . . . . . . . . . . . . . . . . .
Gauge Manifold Attachment Page 42. . . . . . . . . . . . . . . . . . . . . . .
Charging Page 42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VII- HEATIING SYSTEM SERVICE CHECKS Pages 42-46. . . . . . . .
A.G.A./C.G.A. Applications and Requirements Page 42-43. . . . .
Gas Piping Page 43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Testing Gas Piping Page 43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Testing Supply Pressure Page 43. . . . . . . . . . . . . . . . . . . . . . . . . .
Check and Adjust Manifold Pressure Page 43-44. . . . . . . . . . . . .
Proper Gas Flow Page 44. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
High Altitude Derate Pages 44. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inshot Burner Pages 44-45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Heat Exchanger Page 45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ignition Control Page 45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrode Gap and Flame Sensing Pages 45-46. . . . . . . . . . . . .
Combustion Air Blower Page 46. . . . . . . . . . . . . . . . . . . . . . . . . . .
VIII- INDOOR BLOWER OPERATION / ADJUSTMENT
Pages 46-47. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Blower Operation Page 46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Determining Unit CFM Page 46. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Blower Belt Adjustment Pages 46-47. . . . . . . . . . . . . . . . . . . . . . .
IX- MAINTENANCE Page 47. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Filters Page 47. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lubrication Page 47. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Supply Air Blower Wheel Page 47. . . . . . . . . . . . . . . . . . . . . . . . . .
Evaporator and Condenser Coil Page 47. . . . . . . . . . . . . . . . . . . .
Electrical Page 47. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
X- ACCESSORIES Pages 48-63. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RMF16 Roof Mounting Frame Page 48. . . . . . . . . . . . . . . . . . . . .
OAD16 Outdoor Air Damper Page 48. . . . . . . . . . . . . . . . . . . . . . .
Economizers Pages 48-54. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transitions and Supply / Return Diffusers Page 54. . . . . . . . . . . .
Firestats Page 54. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cycle Control Kit Page 55. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low Ambient Kit Page 56. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Status Panels Pages 56-57. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Commercial Controls Hardware Pages 58-59. . . . . . . . . . . . . . . .
Optional Commecial Controls Systems Pages 59-63. . . . . . . . . .
Clocks / Timers Page 63. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
XI- WIRING DIAGRAMS / OPERATION SEQUENCE
Pages 64-79. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unit Operation Sequence Pages 64-75. . . . . . . . . . . . . . . . . . . . .
REMD16M Economizer Operation Sequence Pages 76-77. . . .
Warm Up Kit Operation Sequence Pages 78-79. . . . . . . . . . . . . .
Библиотека СОК 

Page 2
SPECIFICATIONS - GCS16823 & GCS16953
Model No. GCS16823 GCS16953
*
ARI Standard
Total cooling capacity (Btuh) 73,000 88,000
*ARI
S
tan
d
ar
d
210/240
Ratings
Total unit watts 8,110 9,780
Ratings EER (Btuh/Watts) 9.0
ARI Standard 270 SRN (Bels) 8.6
Refrigerant (22) Charge
Stage 1 5 lbs. 10 oz. 6 lbs. 4 oz.
Refrigerant (22) Charge Stage 2 5 lbs. 2 oz. 5 lbs. 14 oz.
Blower wheel nominal diameter x width (in.) 12 x 12
Evaporator Blower
Nominal motor horsepower 2
E
vaporator
Bl
ower
and
Drive Selection
***Factory
Installed
Maximum usable horsepower 2.30
Drive Selection Installed
Drives Voltage & phase 208/230/460v3ph
RPM range 740  1010
Net face area (sq. ft.) 7.75
Evaporator Coil Tube diameter (in.) & No. of rows 3/8  3
p
Fins per inch 14
Net face area (sq. ft.) 15.67
Condenser Coil Tube diameter (in.) & No. of rows 3/8  2
Fins per inch 20
Diameter (in.) & No. of blades 24  4
Condenser Air volume (cfm) 4800 5300
Condenser
Fans Motor horsepower 1/2 3/4
Motor watts 620 660
Btuh Input (low) 84,000 126,000
Two Stage
Btuh Output (low) 66,500 98,000
T
wo
S
tage
Heating Capacity
(Natural Gas Only)
Btuh Input (High) 135,000 200,000
gpy
(Natural Gas Only) Btuh Output (High) 106,000 160,000
A.G.A. Thermal Efficiency 79% 80%
Btuh Input (low) 95,000 126,000
Two Stage
Btuh Output (low) 76,000 98,000
T
wo
S
tage
Heating Capacity
(**LPG Gas Only)
Btuh Input (High) 130,000 175,000
gpy
(**LPG Gas Only) Btuh Output (High) 103,000 142,000
A.G.A. Thermal Efficiency 80% 81.5%
Gas Suppl
y
Natural
3/4
Gas
Supply
Connections fpt (in.) **LPG 3/4
Recommended Gas Natural 7
Recommended
Gas
Supply Pressure (wc. in.) **LPG 11
Condensate drain size mpt (in.) 1
No. & size of filters (in.) (4) 16 x 20 x 2
Electrical characteristics 208/230v or 460v  60 hertz  3 phase
Sound Rating Number in accordance with ARI Standard 270.
*Rated in accordance with ARI Standard 210/240; 95F outdoor air temperature and 80F db/67F wb entering evaporator air.
**For LPG units a field conversion kit is required and must be ordered extra. See Optional Accessories table.
***Using total air volume and system static pressure requirements determine from blower performance tables rpm and bhp required. Maximum usable hp of motors
furnished by Lennox are shown. If motors of comparable hp are used, be sure to keep within the service factor limitations outlined on the motor nameplate.

Page 3
SPECIFICATIONS  GCS161353 & GCS161603
Model No. GCS161353 GCS161603
*ARI St d d
Total cooling capacity (btuh) 119,000 142,000
*ARI Standard
210/240 Ratings
Total unit watts 13,220 16,820
210/240
Ratings
or
Standard 360 Ratings
EER (Btuh/Watts) 9.0 8.50
Standard 360 Ratings Integrated Part Load Value     8.8
ARI Standard 270 SRN (Bels) 8.8    
Refrigerant (22) Charge
Stage 1
7 lbs 4 oz
10 lbs. 12 oz.
Refrigerant (22) Charge Stage 2 7 lbs. 4 oz. 7 lbs. 12 oz.
Blower wheel nominal diameter x width (in.) 15 x 15
Nominal motor horsepower 2 3
**Factory
Installed
Maximum usable horsepower 2.30 3.45
Evaporator Blower
Installed
Drives Voltage & phase 208/230/460v3ph
E
vapora
t
or
Bl
ower
and
Di S l ti
Drives
RPM range 730  950
Drive Selection
**Optional
Nominal motor horsepower 3   
**Optional
Factor
y
Maximum usable horsepower 3.45    
Factory
Installed
Drives
Voltage & phase 208/230/460v3ph    
Drives RPM range 730  950    
Net face area (sq. ft.) 9.46 11.9
Evaporator
Coil
Tube diameter (in.) & No. of rows 3/8  4 3/8  3
C
o
il
Fins per inch 12
Net face area (sq. ft.) 20.0 24.4
Condenser
Coil
Tube diameter (in.) & No. of rows 3/8  2
C
o
il
Fins per inch 20 20
Diameter (in.) & No. of blades (2) 20  5 (2) 22  4
Condenser Air volume (cfm) 6400 Total 7700 Total
Condenser
Fans Motor horsepower (2) 1/3 (2) 1/2
Motor watts 875 Total 1050 Total
Btuh Input (low) 170,000
Two Stage
Btuh Output (low) 132,500
T
wo
St
age
Heating Capacity
(N t l G O l )
Btuh Input (High) 270,000
gpy
(Natural Gas Only) Btuh Output (High) 216,000
A.G.A. Thermal Efficiency 80%
Btuh Input (low) 170,000
Two Stage
Btuh Output (low) 132,500
T
wo
St
age
Heating Capacity
(***LPG G O l )
Btuh Input (High) 236,250
gpy
(***LPG Gas Only) Btuh Output (High) 192,500
A.G.A. Thermal Efficiency 81.5%
Gas Su
pp
l
y
Natural
3/4
Gas
Supply
Connections fpt (in.) ***LPG 3/4
Recommended Gas Natural 7
Recommended
Gas
Supply Pressure (wc. in.) ***LPG 11
Condensate drain size mpt (in.) 1
No. & size of filters (in.) (4) 16 x 25 x 2 (4) 20 x 25 x 2
Electrical characteristics 208/230v or 460v  60 hertz  3 phase
Sound Rating Number in accordance with ARI Standard 270.
*Rated in accordance with ARI Standard 210/240 or 360; 95F outdoor air temperature and 80F db/67F wb entering evaporator air.
**Using total air volume and system static pressure requirements determine from blower performance tables rpm and bhp required. Maximum usable hp of motors
furnished by Lennox are shown. If motors of comparable hp are used, be sure to keep within the service factor limitations outlined on the motor nameplate.
***For LPG units a field conversion kit is required and must be ordered extra. See Optional Accessories table.

Page 4
SPECIFICATIONS  GCS161853
Model No. GCS161853235 GCS161853330
Total cooling capacity (btuh) 178,000
*ARI
Standard
Total unit watts 20,300
Standard
360 EER (Btuh/Watts) 8.8
360
Ratings Integrated Part Load Value 9.6
Refrigerant
Stage 1
R
e
f
r
i
geran
t
(22)
Ch
Stage 2 7 lbs. 9 oz.
(22)
Charge Stage 3
bs 9 o
Blower wheel nominal diameter x width (in.) 18 x 18
Nominal motor horsepower 3
**Factory
Installed
Maximum useable horsepower 3.45
Evaporator
Blower
Installed
Drives Voltage & Phase 208/230/460v3ph
Bl
ower
and
Drives
RPM Range 610  780
and
Drive
Section
Nominal motor horsepower 5
S
ec
ti
on **Factory
Installed
Maximum useable horsepower 5.75
Installed
Drives Voltage & Phase 208/230/460v3ph
Drives
RPM Range 770  980
Et
Net face area (sq. ft.) 16.0
Evaporator
Coil
Tube diameter (in.) & No. of rows 3/8  3
Coil
Fins per inch 13
Cd
Net face area (sq. ft.) 30.5
Condenser
Coil
Tube diameter (in.) & No. of rows 3/8  2
Coil
Fins per inch 20
Diameter (in.) & No. of blades (2) 26  4
Condenser Air volume (cfm) 12,000 Total
Condenser
Fan(s) Motor horsepower (2) 1
Motor watts 2200 Total
Two
Btuh Input (Low) 145,000 205,000
T
wo
Stage
Hti
Btuh Output (Low) 116,000 159,900
Stage
Heating
Capacity
Btuh Input (high) 235,000 330,000
C
apac
it
y
(Natural
GOl)
Btuh Output (High) 188,000 264,000
(aua
Gas Only) A.G.A. Thermal Efficiency 80% 80%
Two
Btuh Input (Low) 164,000 237,000
T
wo
Stage
Hti
Btuh Output (Low) 131,200 189,600
Stage
Heating
Capacity
Btuh Input (High) 235,000 330,000
C
apac
it
y
(***LPG
GOl)
Btuh Output (High) 188,000 264,000
(G
Gas Only) A.G.A. Thermal Efficiency 80% 80%
Gas Suppl
y
Natural 3/4
Gas
Supply
Connections fpt (in.) ***LPG 3/4
Recommended Gas
Supply Pressure
Natural 7
Supply Pressure
(wc. in.) ***LPG 11
Condensate Drain Size mpt (in.) 1
No. & Size of filters (in.) (4) 24 x 24 x 2
Electrical characteristics 208/230 to 460 volt  60 hertz  3 phase
*Rated in accordance with ARI Standard 360; 95F outdoor air temperature and 80F db/ 67F wb entering evaporator air; minimum external duct static pressure.
**Using total air volume and system static pressure requirements determine from blower tables rpm and bhp required. Maximum usable hp of motors furnished by Lennox are
shown. If motors of comparable hp are used be sure to keep within the service factor limitations outlined on the motor nameplate.
***For LPG models a field conversion kit is required and must be ordered extra. See Optional Accessories table.

Page 5
SPECIFICATIONS  GCS162553
Model No. GCS162553235 GCS162553470
*ARI
Total Cooling Capacity (btuh) 210,000
*ARI
Standard
Total Unit Watts 21,400
Standard
360
Ratings
EER (Btuh/Watts) 9.8
Ratings Integrated Part Load Value 10.4
Refri
g
erant
(
22
)
Stage 1
18 lbs 8 oz
Refrigerant
(22)
Charge Stage 2 18 lbs. 8 oz.
Blower wheel nominal diameter x width (in.) 20 x 18
Nominal motor horsepower 5
**Factory
Installed
Maximum usable horsepower 5.75
Evaporator
Blower
Installed
Drives Voltage & phase 208/230v3ph or 460v3ph
Bl
ower
and
Di
Drives
RPM range 660  840
and
Drive
Selection
**Optional
Nominal motor horsepower 7.5
Selection
**Optional
Factor
y
Maximum usable horsepower 8.60
Factory
Installed
Drives
Voltage & phase 208/230v3ph or 460v3ph
Drives RPM range 750  905
Net face area (sq. ft.) 21.0
Evaporator
Coil
Tube diameter (in.) & No. of rows 3/8  3
C
o
il
Fins per inch 13
Net face area (sq. ft.) 48.5
Condenser
Coil
Tube diameter (in.) & No. of rows 3/8  2
C
o
il
Fins per inch 20
Diameter (in.) & No. of blades (2) 26  4
Condenser Air volume (cfm) 14,000 (Total)
Condenser
Fans Motor horsepower (2) 1
Motor watts 2100 (Total)
Btuh Input (low) 145,000 290,000
Two Stage
Btuh Output (low) 116,000 232,000
T
wo
St
age
Heating Capacity
(N t l G O l )
Btuh Input (High) 235,000 470,000
gpy
(Natural Gas Only) Btuh Output (High) 188,000 376,000
A.G.A. Thermal Efficiency 80% 80%
Btuh Input (low) 164,000 376,000
Two Stage
Btuh Output (low) 131,200 262,400
T
wo
St
age
Heating Capacity
(***LPG G O l )
Btuh Input (High) 235,000 470,000
gpy
(***LPG Gas Only) Btuh Output (High) 188,000 328,000
A.G.A. Thermal Efficiency 80%
Gas Su
pp
l
y
Natural
3/4
1
Gas
Supply
Connections fpt (in.) ***LPG 3/4 1
Recommended Gas Natural 7
Recommended
Gas
Supply Pressure (wc. in.) ***LPG 11
Condensate drain size mpt (in.) (2) 1
No. & size of filters (in.) (6) 20 x 25 x 2
Electrical characteristics 208/230v or 460v  60 hertz  3 phase
* Rated in accordance with ARI Standard 360; 95F outdoor air temperature and 80F db/67F wb entering evaporator air; minimum external duct static pressure.
**Using total air volume and system static pressure requirements determine from blower performance tables rpm and bhp required. Maximum usable hp of motors
furnished by Lennox are shown. If motors of comparable hp are used, be sure to keep within the service factor limitations outlined on the motor nameplate.
***For LPG units a field conversion kit is required and must be ordered extra. See Optional Accessories table.
208,000 Btuh and 9.6 EER at 208 volts.

Page 6
SPECIFICATIONS  GCS162753
ModelNo. GCS162753235 GCS162753470
*ARI
TotalCoolingCapacity(btuh) 240,000
*ARI
Standard TotalUnitWatts 26,700
Standard
360
Ratings
EER(Btuh/Watts) 9.0
Ratings IntegratedPartLoadValue 9.7
Refri
g
erant
(
22
)
Stage1
19 lbs 0 oz
Refrigerant

(22)
Charge Stage2 19lbs.0oz.
Blowerwheelnom.diameterxwidth(in.) 20x18
Nominalmotorhorsepower 5
**Factory
Installed
Max.usablehorsepower 5.75
Evaporator Blower
Installed
Drives Voltage&phase 208/230v3phor460v3ph
E
vapora
t
or
Bl
ower
and
Di S l ti
Drives
RPMrange 660840
DriveSelection
**Optional
Nominalmotorhorsepower 7.5
**Optional
Factor
y
Max.usablehorsepower 8.60
Factory
Installed
Drives
Voltage&phase 208/230v3phor460v3ph
Drives RPMrange 750905
Et
Netfacearea(sq.ft.) 21.0
Evaporator
Coil
Tubediameter(in.)&No.ofrows 3/83
Coil
Finsperinch 13
Cd
Netfacearea(sq.ft.) 48.5
Condenser
Coil
Tubediameter(in.)&No.ofrows 3/82
Coil
Finsperinch 20
Diameter(in.)&No.ofblades (2)264
Condenser Airvolume(cfm) 14,000(Total)
Condenser
Fans Motorhorsepower (2)1
Motorwatts 2100(Total)
BtuhInput(low) 145,000 290,000
Two Stage
BtuhOutput(low) 116,000 232,000
T
wo
St
age
HeatingCapacity
(N t l G O l )
BtuhInput(High) 235,000 470,000
gpy
(NaturalGasOnly) BtuhOutput(High) 188,000 376,000
A.G.A.ThermalEfficiency 80% 80%
BtuhInput(low) 164,000 328,000
Two Stage
BtuhOutput(low) 131,200 262,400
T
wo
St
age
HeatingCapacity
(***LPG G O l )
BtuhInput(High) 235,000 470,000
gpy
(***LPGGasOnly) BtuhOutput(High) 188,000 376,000
A.G.A.ThermalEfficiency 80% 80%
GasSuppl
y
Natural
3/4
1
Gas

Supply
Connectionsfpt(in.) ***LPG 3/4 1
RecommendedGas Natural 7
Recommended

Gas
SupplyPressure(wc.in.) ***LPG 11
Condensatedrainsizempt(in.) (2)1
No.&sizeoffilters(in.) (6)20x25x2
Electricalcharacteristics 208/230vor460v60hertz3phase
*RatedinaccordancewithARIStandard360;95Foutdoorairtemperatureand80Fdb/67Fwbenteringevaporatorair;minimumexternalductstaticpressure.
**Usingtotalairvolumeandsystemstaticpressurerequirementsdeterminefromblowerperformancetablesrpmandbhprequired.Maximumusablehpof
motorsfurnishedbyLennoxareshown.Ifmotorsofcomparablehpareused,besuretokeepwithintheservicefactorlimitationsoutlinedonthe motornameplate.
***ForLPGunitsafieldconversionkitisrequiredandmustbeorderedextra. See Optional Accessories table.
238,000 Btuh and 8.9 EER at 208 volts.

Page 7
SPECIFICATIONS  GCS163003
ModelNo. GCS163003235 GCS163003470
*ARI
TotalCoolingCapacity(btuh) •284,000
*ARI
Standard TotalUnitWatts 33,400
Standard
360
Ratings
EER(Btuh/Watts) 8.5
R
a
ti
ngs IntegratedPartLoadValue 9.1
Refri
g
erant
(
22
)
Stage1
20 lbs 0 oz
Refrigerant

(22)
Charge Stage2 20lbs.0oz.
Blowerwheelnom.diameterxwidth(in.) 20x18
Nominalmotorhorsepower 7.5
**Factory
Installed
Max.usablehorsepower 8.6
Evaporator Blower
Installed
Drives Voltage&phase 208/230v3phor460v3ph
E
vapora
t
or
Bl
ower
and
Drive Selection
Drives
RPMrange 610780
DriveSelection
Optional
Nominalmotorhorsepower 10
Optional
**Factor
y
Max.usablehorsepower 11.5
Factory
Installed
Drives
Voltage&phase 208/230v3phor460v3ph
D
r
i
ves RPMrange 770980
Netfacearea(sq.ft.) 21.0
EvaporatorCoil Tubediameter(in.)&No.ofrows 3/83
apo a o Co
Finsperinch 13
Netfacearea(sq.ft.) 48.5
CondenserCoil Tubediameter(in.)&No.ofrows 3/83
Co de se Co
Finsperinch 16
Diameter(in.)&No.ofblades (2)264
Condenser Airvolume(cfm) 14,500(Total)
Condenser
Fans Motorhorsepower (2)1
Motorwatts 2200(Total)
BtuhInput(low) 145,000 290,000
Two Stage
BtuhOutput(low) 116,000 232,000
T
wo
St
age
HeatingCapacity
(Natural Gas Only)
BtuhInput(High) 235,000 470,000
gpy
(NaturalGasOnly) BtuhOutput(High) 188,000 376,000
A.G.A.ThermalEfficiency 80% 80%
BtuhInput(low) 164,000 328,000
Two Stage
BtuhOutput(low) 131,200 262,400
T
wo
St
age
HeatingCapacity
(***LPG Gas Only)
BtuhInput(High) 235,000 470,000
gpy
(***LPGGasOnly) BtuhOutput(High) 188,000 376,000
A.G.A.ThermalEfficiency 80%
GasSuppl
y
Natural
3/4
1
Gas

Supply
Connectionsfpt(in.) ***LPG 3/4 1
RecommendedGas Natural 7
Recommended

Gas
SupplyPressure(wc.in.) ***LPG 11
Condensatedrainsizempt(in.) (2)1
No.&sizeoffilters(in.) (6)20x25x2
Electricalcharacteristics 208/230vor460v60hertz3phase
•Rated at ARI Standard 360 Test Conditions.
*RatedinaccordancewithARIStandard360;95Foutdoorairtemperatureand80Fdb/67Fwbenteringevaporatorair;minimumexternalductstaticpressure.
**Usingtotalairvolumeandsystemstaticpressurerequirementsdeterminefromblowerperformancetablesrpmandbhprequired.MaximumusablehpofmotorsfurnishedbyLen
noxareshown.Ifmotorsofcomparablehpareused,besuretokeepwithintheservicefactorlimitationsoutlinedonthemotornameplate.
***ForLPGunitsafieldconversionkitisrequiredandmustbeorderedextra.

Page 8
OPTIONAL ACCESSORIES GCS16823 & GCS16953 (Ordered Extra)
Unit Model No. GCS16823 & GCS16953
**LPG Conversion Kit LB83188A (823) 67H33
LB55755DA (953) 32G88
Roof Mounting Frame RMF1695 (32G90)
Economizer Dampers
No. & size of filters (in.)
REMD16M95 (74G22)
(2) 16 x 25 x 1
Horizontal Economizer Dampers
No. & size of filters (in.)
EMDH16M95 (24H03)
(2) 16 x 25 x 1
Exhaust Dampers (Net Face Area) GED1695/135/160 (0.43 sq. ft.) (34G80)
Differential Enthalpy Control 54G44
Horizontal Supply and Return Air Kit (LB55756BA) 34G71
Bottom Power Entry Kit (LB55757CA) 34G70
Ceilin
g
Su
pp
l
y
and StepDown RTD1195 (29G04)
Ceiling
Supply
and
Return Air
Diffusers Flush FD1195 (29G05)
Diffusers
(Net Weight) Transition SRT1695 (33G96)
Outdoor Air Dampers
No. & size of filters (in.)
OAD1695 (35G26)
(1) 16 x 20 x 1
Automatic OAD16 Damper Kit 35G21
Low Ambient Control Kit (LB57113BG) 15J80
TimedOff Control (2) LB50709BA 40G20
**For LPG units a field conversion kit is required and must be ordered extra.
OPTIONAL ACCESSORIES  GCS161353 & GCS161603 (Ordered Extra)
Unit Model No. GCS161353 GCS161603
**LPG Conversion Kit LB55755BA (32G88)
Roof Mounting Frame RMF16135/160 (32G91)
Economizer Dampers
No. & size of filters (in.)
REMD16M135
(2) 16 x 25 x 1 (74G23)
REMD16M160
(2) 20 x 25 x 1 (51G25)
Horizontal Economizer Dampers
No. & size of filters (in.)
EMDH16M135
(2) 16 x 25 x 1 (24H04)
EMDH16M160
(2) 20 x 25 x 1 (24H05)
Exhaust Dampers (Net Face Area) GED1695/135/160 (0.43 sq. ft.) (34G80)
Differential Enthalpy Control 54G44
Horizontal Supply and Return Air Kit LB55756BB (35G42) LB55756BC (51G27)
Bottom Power Entry Kit (LB55757CA) 34G70 Furnished
Ceiling Supply and
StepDown RTD11135 (29G05) RTD11185 (29G06)
C
e
ili
ng
S
upp
l
y an
d
Return Air
Diffusers
Flush FD11135 (29G09) FD11185 (29G10)
Diffusers Transition SRT16135 (97H10) SRT16160 (97H11)
Outdoor Air Dampers
No. & size of filters (in.)
OAD16135 (35G25)
(1) 16 x 20 x 1
OAD16160 (51G30)
(1) 16 x 20 x 1
Automatic OAD16 Damper Kit 35G21
Low Ambient Control Kit LB57113BH (16J86) LB57113BJ (16J87)
TimedOff Control (2) LB50709BA 40G20
**For LPG units a field conversion kit is required and must be ordered extra.

Page 9
OPTIONAL ACCESSORIES  GCS161853 (Ordered Extra)
Unit Model No. GCS161853
**LPG Conversion Kit LB81509DA (12H31)
Roof Mounting Frame RMF16185 (12H05)
Economizer Dampers with Gravity Exhaust No. & size of filters (in.) REMD16M185 (40H14) (2) 25 x 25 x 1
Differential Enthalpy Control 54G44
Model No
208/230 volt PED16185 (12H16)
Model No. 460 volt PED16185 (12H17)
Power
Exhaust Diameter (in.) & No. of Blades (2) 16  5
Exhaust
Fans
(Down

Flo Only)
Total air volume (cfm) 4200
(Down

Flo
Only)
Motor Horsepower (2) 1/4
Watts Input (total) 500
Horizontal Supply and Return Air Kit (LB55756BD) 12H04
Ceiling Supply and
StepDown RTD11185 (29G06)
C
e
ili
ng
S
upp
l
y an
d
Return Air Diffusers
(Net Weight)
Flush FD11185 (29G10)
(Net Weight) Transition SRT16185 (97H12)
Outdoor Air Dampers  No. & size of filters (in.) OAD16185 (12H03) (1) 25 x 27 x 1
Automatic OAD16 Damper Kit 35G21
Low Ambient Control Kit (LB57113BK) 16J88
**For LPG units a field conversion kit is required and must be ordered extra.
OPTIONAL ACCESSORIES  GCS162553, GCS162753 & GCS163003 (Ordered Extra)
Unit Model No. GCS162553,GCS162753&GCS163003
**LPG Conversion Kit LB81509DA(12H31) (2 required on 470)
Roof Mounting Frame RMF16300 (41H04)
Economizer Dampers with Gravity Exhaust No. & size of filters (in.) REMD16M300(44H47) (3)20x25x1
Differential Enthalpy Control 54G44
Model No
208/230v PED16300 (44H79)
Model No. 460v PED16300 (44H80)
Power
Exhaust Diameter (in.) & No. of Blades (3) 165
Exhaust
Fans
(Down

Flo Only)
Total air volume (cfm) 6300
(Down

Flo
Only)
Motor Horsepower (3)1/4
Watts Input (total) 750
Horizontal Supply and Return Air Kit (LB55756BE) 41H23
Ceiling Supply and
StepDown RTD11275 (29G07)
C
e
ili
ng
S
upp
l
y an
d
Return Air
Diffusers
Flush FD11275 (29G11)
Diffusers Transition SRT16300 (97H13)
Outdoor Air Dampers  No. & size of filters (in.) OAD16300 (1)26x31x1 (40H47)
Automatic OAD16 Damper Kit 35G21
Low Ambient Control Kit (LB57113BL) 16J89
**For LPG units a field conversion kit is required and must be ordered extra.

Page 10
ELECTRICAL DATA  GCS16823, 953, 1353 & 1603
ModelNo. GCS16823 GCS16953 GCS161353 GCS161603
Linevoltagedata60hz3phase 208/230v 460v 208/230v 460v 208/230v 460v 208/230v 460v
Com
p
ressors
Ratedloadampseach
(total)
11.4/11.4
(22.8)
5.3/5.3
(10.6)
14.8/14.1
(28.9)
7.7/7.1
(14.8)
17.3/17.3
(34.6)
9.6/9.6
(19.2)
27.1/17.9
(45.0)
14.2/10.0
(24.2)
Compressors
(2) Lockedrotorampseach
(total)
66/66
(132.0)
35/35
(70.0)
130/130
(260.0)
64/64
(128.0)
150/150
(300.0)
73/73
(146.0)
183/150
(323.0)
91/73
(164)
Condenser
Fullloadamps(total) 2.6 1.6 3.7 1.9 2.1/2.1
(4.2)
1.2/1.2
(2.4)
3.0/3.0
(6.0)
1.5/1.5
(3.0)
Condenser
FanMotor(s)
Lockedrotoramps(total) 5.9 3.3 7.3 3.7 5.1/5.1
(10.2)
2.7/2.7
(5.4)
6.2/6.2
(12.4)
3.4/3.4
(6.8)
Evaporator
Horsepower 2 2 2 2 2 3 2 3 3 3
Evaporator
Blower
Motor
Fullloadamps 7.5 3.4 7.5 3.4 7.5 10.6 3.4 4.8 10.6 4.8
Motor
Lockedrotoramps 41.0 20.4 41.0 20.4 41.0 58.0 20.4 26.8 58.0 26.8
**Recommendedmaximum fusesize(amps) 45 20 50 25 60 60 35 35 90 45
*MinimumCircuitAmpacity 36.0 17.0 44.0 23.0 51.0 54.0 28.0 29.0 69.0 36.0
Unitpowerfactor .88 .88 .88 .88 .88 .88 .88 .88 .88 .88
*RefertoNationalElectricalCodemanualtodeterminewire,fuseanddisconnectsizerequirements.
NOTEExtremesofoperatingrangeareplusandminus10%oflinevoltage.
**Wherecurrentdoesnotexceed100amps,HACRtypecircuitbreakermaybeusedinplaceoffuse.
ELECTRICAL DATA  GCS161853, 2553 & 2753
ModelNo. GCS161853 GCS162553 GCS162753 GCS163003
Linevoltagedata60hz3phase 208/230v 460v 208/230v 460v 208/230v 460v 208/230v 460v
Rated load amps
each (3) 19.2 (3) 9.6 (2) 31.0 (2) 16.8 (2) 37.1 (2) 17.8 (2) 46.5 (2) 22.2
Compressors
Ratedloadamps total 57.6 28.8 62.0 33.6 74.2 35.6 93.0 44.4
Compressors
Locked rotor amps
each (3) 124 (3) 62 (2) 205.0 (2) 104.0 (2) 239.0 (2) 120.0 (2) 269.0 (2) 135.0
Locked rotor amps total 372.0 186.0 410.0 208.0 478.0 240.0 538.0 270.0
Condenser Full load amps(total) 9.6 4.8 9.6 4.8 9.6 4.8 9.6 4.8
Condenser
FanMotors (2) Lockedrotoramps(total) 24.0 12.0 46.0 23.0 46.0 23.0 46.0 23.0
Evaporator
Horsepower 3535571/2 571/2 571/2 571/2 71/2 10 71/2 10
E
vapora
t
or
Blower
Mt
Fullloadamps 10.6 16.7 4.8 7.6 16.7 24.2 7.6 11.0 16.7 24.2 7.6 11.0 24.2 30.8 11.0 14.0
Motor Lockedrotoramps 58.0 91.0 26.8 45.6 105.0 152.0 45.6 66.0 105.0 152.0 45.6 66.0 152.0 193.0 66.0 84.0
Optional
(No.) Horsepower (2)  1/4 (2)  1/4 (3)1/4 (3)1/4 (3)1/4 (3)1/4 (3)1/4 (3)1/4
O
p
ti
ona
l
Power Exhaust
F
Fullloadamps(total) 2.8 1.4 4.2 2.2 4.2 2.2 4.2 2.2
Fans Lockedrotoramps (total) 6.5 3.3 8.7 3.9 8.7 3.9 8.7 3.9
**Recommended
max fuse size
Less exhaust fans 100 110 50 50 125 125 60 70 150 150 70 70 175 175 90 90
max. fusesize
(amps) With exhaust Fans 100 110 50 50 125 125 60 70 125 150 70 70 175 175 90 90
Unit power factor
Less exhaust fans .84 .84 .84 .84 .88 .88 .88 .88 .88 .88 .88 .88 .87 .87 .87 .87
Unit power factor With exhaust Fans .84 .84 .84 .84 .88 .88 .88 .88 .88 .88 .88 .88 .87 .87 .87 .87
*MinimumCircuit Less exhaust fans 82.0 92.0 43.0 48.0 97.0 104.0 51.0 54.0 110.0 118.0 53.0 56.0 139.0 146.0 66.0 69.0
Minimum

Circuit
Ampacity With exhaust Fans 85.0 95.0 45.0 50.0 101.0 108.0 53.0 56.0 114.0 122.0 55.0 58.0 143.0 150.0 68.0 71.0
*RefertoNationalElectricalCodemanualtodeterminewire,fuseanddisconnectsizerequirements.
NOTEExtremesofoperatingrangeareplusandminus10%oflinevoltage.
**Wherecurrentdoesnotexceed100amps,HACRtypecircuitbreakermaybeusedinplaceoffuse.

Page 11
GCS16823 BLOWER PERFORMANCE
Air
STATIC PRESSURE EXTERNAL TO UNIT  Inches Water Gauge
Ai
r
Vol ume
(f )
.20 .40 .60 .70 .80 .90 1.00 1.10 1.30 1.50
Vol ume
(cfm) RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
2200                 790 .75 835 .85 880 .90 920 1.00 960 1.10 1000 1.15 1075 1.35 1145 1.55
2400                 815 .85 860 .95 900 1.05 940 1.15 975 1.20 1015 1.30 1085 1.50 1160 1.70
2600         755 .80 840 1.00 880 1.10 920 1.20 960 1.30 995 1.40 1030 1.50 1100 1.70 1170 1.90
2800         790 .95 870 1.15 910 1.25 945 1.35 980 1.45 1020 1.55 1055 1.70 1120 1.90 1190 2.10
3000 740 .95 825 1.15 900 1.35 935 1.45 970 1.55 1005 1.65 1040 1.75 1075 1.90 1140 2.10        
3200 780 1.10 855 1.30 930 1.55 965 1.65 1000 1.75 1035 1.85 1065 2.00 1100 2.10                
3400 820 1.30 895 1.55 960 1.75 995 1.85 1030 2.00 1060 2.10 1095 2.25                        
NOTE  All data is measured external to the unit with dry coil and with the air filters in place. See Page 23 for Accessory Air Resistance data.
GCS16953 BLOWER PERFORMANCE
Air STATIC PRESSURE EXTERNAL TO UNIT  Inches Water Gauge
Vol ume .20 .40 .60 .70 .80 .90 1.00 1.10 1.30 1.50
(cfm) RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
2400                 860 .95 905 1.05 955 1.55 1000 1.25 1050 1.40 1100 1.55 1195 1.95 1285 2.25
2600                 885 1.10 930 1.20 970 1.30 1015 1.40 1060 1.55 1105 1.70 1200 2.15        
2800         830 1.05 910 1.25 955 1.35 995 1.45 1035 1.60 1075 1.70 1115 1.85 1210 2.25        
3000         860 1.20 945 1.45 980 1.55 1020 1.65 1060 1.80 1095 1.90 1135 2.05                
3200 835 1.20 905 1.40 975 1.60 1010 1.75 1050 1.90 1085 2.00                                
3400 880 1.40 945 1.60 1010 1.85 1045 2.00 1080 2.10                                        
3600 920 1.65 985 1.85 1050 2.10 1080 2.25                                                
3800 965 1.90 1025 2.15                                                                
NOTE  All data is measured external to the unit with dry coil and with the air filters in place. See Page 23 for Accessory Air Resistance data.
GCS161353 BLOWER PERFORMANCE
Air STATIC PRESSURE EXTERNAL TO UNIT  Inches Water Gauge
Vol ume .20 .40 .60 .70 .80 .90 1.00 1.10 1.30 1.50
(cfm) RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
3600         672 1.14 740 1.36 772 1.47 802 1.60 831 1.74 860 1.87 887 2.00 940 2.30 985 2.60
3800         690 1.27 760 1.48 790 1.64 820 1.78 850 1.93 878 2.06 905 2.20 950 2.46 994 2.76
4000 642 1.18 715 1.43 778 1.67 809 1.81 838 1.95 866 2.09 895 2.24 920 2.38 968 2.66 1013 2.96
4200 670 1.35 736 1.50 798 1.87 828 2.00 856 2.13 885 2.28 913 2.43 938 2.56 984 2.86 1030 3.19
4400 693 1.52 760 1.79 821 2.06 850 2.29 878 2.36 905 2.50 930 2.63 955 2.77 1003 3.08        
4600 718 1.70 785 2.00 843 2.29 872 2.44 900 2.59 923 2.71 948 2.84 974 3.00 1021 3.32        
4800 747 1.93 807 2.22 865 2.41 892 2.66 918 2.82 940 2.93 970 3.09 995 3.25                
5000 772 2.16 830 2.46 887 2.76 915 2.92 940 3.07 965 3.24 989 3.43                        
5200 800 2.41 860 2.75 915 2.92 940 3.22 965 3.42                                        
NOTE  All data is measured external to the unit with dry coil and with the air filters in place. See Page 23 for Accessory Air Resistance data.
NOTE  Data in shaded area denotes optional 3 hp drive kit.

Page 12
GCS161603 BLOWER PERFORMANCE
Air STATIC PRESSURE EXTERNAL TO UNIT  Inches Water Gauge
Vol ume .20 .40 .60 .70 .80 .90 1.00 1.10 1.30 1.50
(cfm) RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
4200         750 1.67 810 1.91 840 2.05 870 2.17 900 2.31 930 2.45 955 2.60 1010 2.90 1045 3.14
4400 710 1.59 770 1.83 830 2.10 860 2.24 890 2.39 915 2.51 945 2.67 970 2.83 1025 3.12 1060 3.39
4600 735 1.78 795 2.13 855 2.33 880 2.45 910 2.60 935 2.75 960 2.89 990 3.06 1040 3.38 1075 3.62
4800 760 2.00 820 2.27 875 2.54 905 2.70 930 2.85 955 3.01 980 3.26 1010 3.33 1055 3.63 1090 3.87
5000 790 2.26 845 2.53 900 2.80 925 2.96 950 3.11 975 3.27 1000 3.41 1025 3.58 1075 3.94 1110 4.16
5200 815 2.50 870 2.80 920 3.07 950 3.25 975 3.42 1000 3.56 1025 3.75 1045 3.88 1095 4.23 1125 4.46
5400 840 2.79 895 3.07 950 3.41 970 3.55 995 3.70 1020 3.87 1045 4.09 1070 4.22 1110 4.53 1145 4.81
5600 865 3.08 920 3.39 970 3.72 995 3.88 1020 4.05 1045 4.22 1065 4.37 1090 4.57 1130 4.89 1165 5.16
5800 895 3.38 945 3.73 995 4.05 1020 4.25 1045 4.42 1065 4.57 1090 4.76 1110 4.93 1150 5.25 1185 5.59
NOTE  All data is measured external to the unit with dry coil and with the air filters in place. See Page 23 for Accessory Air Resistance data.
NOTE  Data in shaded area requires field furnished motor and drive.
GCS161853235 BLOWER PERFORMANCE
Air
STATIC PRESSURE EXTERNAL TO UNIT  Inches Water Gauge
Ai
r
Vol ume
(f )
.20 .40 .60 .70 .80 .90 1.00 1.10 1.30 1.50
Vol ume
(cfm) RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
5000 520 1.50 580 1.75 640 2.00 670 2.30 690 2.45 715 2.65 745 2.75 770 2.95 820 3.15 865 3.45
5200 540 1.60 590 1.90 650 2.30 680 2.45 705 2.60 725 2.75 755 2.90 780 3.20 830 3.35 875 3.55
5400 550 1.70 605 2.00 665 2.45 690 2.65 710 2.75 735 2.85 760 3.05 790 3.30 840 3.50 885 3.75
5600 565 1.80 615 2.25 675 2.60 700 2.85 720 2.90 745 3.10 770 3.20 800 3.40 850 3.65 890 3.95
5800 580 2.10 625 2.40 685 2.80 710 3.00 730 3.10 760 3.25 780 3.40 810 3.55 855 3.75 900 4.05
6000 600 2.30 650 2.65 695 3.05 720 3.20 745 3.35 770 3.45 795 3.60 820 3.75 870 4.05 910 4.25
6200 610 2.45 660 2.85 705 3.25 730 3.40 755 3.50 780 3.65 805 3.85 830 3.95 875 4.30 915 4.75
6400 625 2.70 675 3.15 715 3.45 740 3.60 765 3.70 790 3.95 815 4.00 840 4.15 885 4.45 930 4.90
6600 640 2.95 690 3.45 730 3.65 755 3.75 775 3.95 805 4.10 825 4.25 850 4.40 895 4.70 935 5.10
6800 655 3.10 700 3.65 748 3.90 765 4.00 790 4.20 815 4.35 835 4.45 860 4.65 905 4.95 945 5.35
7000 670 3.50 710 3.85 755 4.10 780 4.35 800 4.45 825 4.65 845 4.75 870 4.95 910 5.25        
7200 685 3.60 735 3.90 770 4.45 790 4.60 815 4.75 835 4.90 860 5.10 880 5.25 925 5.65        
7400 700 3.80 750 4.15 780 4.55 805 4.65 825 4.85 850 5.00 875 5.25 890 5.60                
7600 710 4.00 760 4.30 790 4.65 815 4.80 835 5.00 850 5.25 880 5.50                        
NOTE  All data is measured external to the unit with dry coil and with the air filters in place. See Page 23 for Accessory Air Resistance data.
NOTE  Data in shaded area denotes optional 5 hp drive kit.

Page 13
GCS161853330 BLOWER PERFORMANCE
STATIC PRESSURE EXTERNAL TO UNIT  Inches Water Gauge
Air
Vol ume
(
cfm
)
.20 .40 .60 .70 .80 .90 1.00 1.10 1.30 1.50
(cfm)
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
5200 580 1.75 620 1.95 680 2.40 705 2.55 725 2.70 750 2.85 775 3.00 795 3.30 840 3.45 880 3.65
5400 590 1.90 640 2.15 695 2.55 715 2.75 740 2.85 765 2.95 785 3.10 810 3.35 850 3.55 890 3.80
5600 605 2.00 655 2.35 710 2.75 730 2.90 755 2.95 775 3.15 759 3.25 815 3.45 860 3.70 900 4.00
5800 615 2.20 670 2.50 720 2.90 740 3.10 765 3.15 785 3.30 810 3.50 830 3.60 870 3.80 910 4.10
6000 630 2.35 690 2.70 730 3.10 755 3.25 775 3.40 795 3.60 820 3.65 840 3.80 880 4.10 920 4.30
6200 650 2.55 705 2.95 750 3.35 770 3.50 790 3.55 810 3.75 830 3.90 850 4.00 890 4.35 930 4.80
6400 670 2.75 720 3.25 760 3.50 780 3.65 800 3.75 820 4.00 845 4.10 865 4.20 900 4.50 940 4.95
6600 690 3.15 730 3.55 775 3.75 795 3.85 810 4.05 835 4.15 855 4.30 875 4.45 910 4.75 950 5.15
6800 705 3.20 750 3.75 790 4.00 805 4.10 825 4.30 845 4.45 865 4.55 885 4.70 925 5.05 965 5.45
7000 720 3.60 760 3.95 800 4.30 820 4.45 840 4.55 860 4.75 880 4.95 895 5.05 935 5.35        
7200 740 3.85 775 4.10 810 4.50 830 4.65 850 4.80 870 4.95 890 5.05 905 5.35 945 5.70        
7400 755 3.95 790 4.25 825 4.65 845 4.75 865 4.90 885 5.15 900 5.35 930 5.65                
7600 765 4.20 800 4.40 830 4.80 850 4.90 870 5.15 890 5.40 905 5.60                        
NOTE  All data is measured external to the unit with dry coil and with the air filters in place. See Page 23 for Accessory Air Resistance data.
NOTE  Data in shaded area denotes optional 5 hp drive kit.

GCS162553235 & GCS162753235 BLOWER PERFORMANCE
Air
STATIC PRESSURE EXTERNAL TO UNIT  Inches Water Gauge
Ai
r
Volume
(f )
.30 .40 .50 .60 .70 .80 .90 1.00 1.10 1.20 1.30 1.40 1.50 1.60 1.70 1.80 1.90 2.00
Volume
(cfm) RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
6000 445 1.45 470 1.60 490 1.70 515 1.85 540 2.05 560 2.15 585 2.35 605 2.50 625 2.65 645 2.80 665 2.95 685 3.15 700 3.25 720 3.45 735 3.55 755 3.75 770 3.90 785 4.05
6250 455 1.55 480 1.75 500 1.85 525 2.05 550 2.20 570 2.35 595 2.55 615 2.70 635 2.85 655 3.05 670 3.15 690 3.35 710 3.50 725 3.65 745 3.85 760 4.00 775 4.10 790 4.25
6500 465 1.70 490 1.90 510 2.00 535 2.20 560 2.40 580 2.55 600 2.70 620 2.85 640 3.05 660 3.20 680 3.40 700 3.60 715 3.70 735 3.90 750 4.05 765 4.20 780 4.35 800 4.60
6750 475 1.85 500 2.05 520 2.20 545 2.40 570 2.60 590 2.75 610 2.90 630 3.10 650 3.25 670 3.45 685 3.60 705 3.80 725 4.00 740 4.15 755 4.30 775 4.50 790 4.65 805 4.85
7000 485 2.00 510 2.20 530 2.35 555 2.55 575 2.75 600 2.95 620 3.15 640 3.30 660 3.50 675 3.65 695 3.85 715 4.05 730 4.20 750 4.45 765 4.60 780 4.75 795 4.95 810 5.10
7250 495 2.20 520 2.40 545 2.60 565 2.75 585 2.95 610 3.15 630 3.35 650 3.55 665 3.70 685 3.90 705 4.10 720 4.30 740 4.50 755 4.65 770 4.85 790 5.05 805 5.25 820 5.45
7500 505 2.35 530 2.55 555 2.80 575 2.95 600 3.20 620 3.40 640 3.60 655 3.75 675 3.95 695 4.20 710 4.35 730 4.55 745 4.75 765 5.00 780 5.15 795 5.35 810 5.55 825 5.70
7750 520 2.60 545 2.80 565 3.00 585 3.20 610 3.45 630 3.65 650 3.85 665 4.00 685 4.25 705 4.45 720 4.65 740 4.85 755 5.05 770 5.25 785 5.40 805 5.70 820 5.85 835 6.05
8000 530 2.80 555 3.00 575 3.20 600 3.45 620 3.70 640 3.90 660 4.10 675 4.30 695 4.50 710 4.70 730 4.95 745 5.10 765 5.35 780 5.55 795 5.75 810 5.95 825 6.15 840 6.35
8250 545 3.05 565 3.25 590 3.50 610 3.70 630 3.95 650 4.15 665 4.35 685 4.55 705 4.80 720 5.00 740 5.25 755 5.45 770 5.65 790 5.90 805 6.10 820 6.30 835 6.55 850 6.75
8500 555 3.25 580 3.50 600 3.75 620 3.95 640 4.20 660 4.45 675 4.60 695 4.85 715 5.10 730 5.30 750 5.55 765 5.75 780 6.00 795 6.20 810 6.40 825 6.60 840 6.85 855 7.05
8750 570 3.55 590 3.75 610 4.00 630 4.20 650 4.45 670 4.70 690 4.95 705 5.15 725 5.40 740 5.65 755 5.85 775 6.10 790 6.35 805 6.55 820 6.75 835 7.00 850 7.25 865 7.45
9000 580 3.75 605 4.05 625 4.30 645 4.55 660 4.75 680 5.00 700 5.25 715 5.45 735 5.75 750 5.95 765 6.20 785 6.45 800 6.70 815 6.95 830 7.15 845 7.40 860 7.65 875 7.90
9250 595 4.10 615 4.35 635 4.60 655 4.85 675 5.10 690 5.30 710 5.60 725 5.80 745 6.10 760 6.30 775 6.55 790 6.75 810 7.10 825 7.30 840 7.55 855 7.80 865 7.95 880 8.25
9500 605 4.35 625 4.60 645 4.85 665 5.15 685 5.40 700 5.65 720 5.90 735 6.15 755 6.45 770 6.65 785 6.90 800 7.15 815 7.40 830 7.65 845 7.90 860 8.15 875 8.40    
9750 620 4.70 640 4.95 660 5.25 675 5.45 695 5.75 715 6.05 730 6.25 745 6.50 765 6.80 780 7.05 795 7.30 810 7.55 825 7.80 840 8.05 855 8.30 870 8.60        
10,000 630 5.00 650 5.25 670 5.55 690 5.85 705 6.05 725 6.40 740 6.60 760 6.95 775 7.20 790 7.45 805 7.70 820 7.95 835 8.20 850 8.50                
NOTE  All data is measured external to the unit with dry coil and air filters in place. See Page 23 for Accessory Air Resistance data.
Shaded area denotes optional 71/2 hp drive kit.
Page 14

GCS162553470 & GCS162753470 BLOWER PERFORMANCE
Air
STATIC PRESSURE EXTERNAL TO UNIT  Inches Water Gauge
Ai
r
Volume
(f )
.30 .40 .50 .60 .70 .80 .90 1.00 1.10 1.20 1.30 1.40 1.50 1.60 1.70 1.80 1.90 2.00
Volume
(cfm) RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
6000 450 1.50 470 1.60 495 1.75 520 1.90 545 2.10 570 2.25 590 2.45 615 2.65 635 2.80 655 3.00 675 3.20 695 3.45 715 3.65 730 3.85 750 4.05 765 4.25 785 4.55 800 4.75
6250 460 1.60 480 1.75 505 1.90 530 2.05 555 2.25 580 2.45 600 2.60 620 2.80 640 3.00 660 3.15 680 3.40 700 3.60 720 3.85 740 4.05 755 4.25 775 4.50 790 4.70 805 4.95
6500 470 1.75 495 1.90 515 2.05 540 2.25 565 2.45 585 2.60 610 2.80 630 3.00 650 3.20 670 3.40 690 3.60 710 3.85 725 4.00 745 4.25 760 4.45 780 4.70 795 4.90 815 5.20
6750 480 1.90 505 2.10 525 2.25 550 2.40 575 2.60 595 2.80 615 3.00 640 3.20 660 3.40 675 3.55 695 3.80 715 4.05 735 4.25 750 4.45 770 4.70 785 4.90 805 5.20 820 5.45
7000 490 2.10 515 2.25 540 2.45 560 2.60 585 2.85 605 3.00 625 3.20 645 3.40 665 3.60 685 3.80 705 4.05 725 4.30 740 4.45 760 4.75 775 4.95 790 5.15 810 5.45 825 5.65
7250 500 2.25 525 2.45 550 2.65 570 2.80 595 3.05 615 3.25 635 3.40 655 3.65 675 3.85 695 4.05 710 4.25 730 4.50 750 4.75 765 4.95 785 5.20 800 5.45 815 5.65 830 5.90
7500 515 2.50 540 2.70 560 2.85 580 3.05 605 3.25 625 3.45 645 3.65 665 3.90 685 4.10 705 4.35 720 4.50 740 4.75 755 4.95 775 5.25 790 5.45 805 5.70 825 6.00 840 6.20
7750 525 2.70 550 2.90 570 3.10 595 3.30 615 3.50 635 3.70 655 3.90 675 4.15 695 4.35 710 4.55 730 4.80 745 5.00 765 5.25 780 5.50 800 5.75 815 6.00 830 6.25 845 6.50
8000 540 2.95 560 3.10 585 3.35 605 3.55 625 3.75 645 3.95 665 4.20 685 4.40 700 4.60 720 4.85 740 5.10 755 5.30 770 5.50 790 5.80 805 6.05 820 6.25 835 6.50 855 6.85
8250 550 3.15 575 3.40 595 3.60 615 3.80 635 4.00 655 4.25 675 4.45 695 4.70 710 4.90 730 5.15 745 5.35 765 5.60 780 5.85 795 6.05 815 6.35 830 6.60 845 6.85 860 7.10
8500 565 3.45 585 3.65 605 3.85 625 4.05 645 4.30 665 4.50 685 4.75 705 5.00 720 5.20 740 5.45 755 5.65 775 5.95 790 6.15 805 6.40 820 6.65 835 6.90 855 7.20 870 7.50
8750 575 3.70 600 3.95 620 4.15 640 4.40 660 4.60 675 4.80 695 5.05 715 5.30 730 5.50 750 5.80 765 6.00 780 6.20 800 6.55 815 6.75 830 7.00 845 7.25 860 7.50 875 7.80
9000 590 4.00 610 4.25 630 4.45 650 4.70 670 4.90 690 5.15 705 5.35 725 5.65 740 5.85 760 6.10 775 6.35 790 6.60 805 6.80 825 7.15 840 7.40 855 7.65 870 7.90 885 8.20
9250 605 4.35 625 4.55 645 4.80 660 5.00 680 5.25 700 5.50 715 5.70 735 5.95 750 6.20 770 6.50 785 6.70 800 6.95 815 7.20 830 7.45 850 7.80 865 8.05 880 8.35 890 8.50
9500 615 4.65 635 4.85 655 5.10 675 5.35 690 5.55 710 5.80 725 6.05 745 6.30 760 6.55 780 6.85 795 7.10 810 7.35 825 7.60 840 7.85 855 8.10 870 8.40        
9750 630 5.00 650 5.25 665 5.45 685 5.70 705 5.95 720 6.15 740 6.45 755 6.70 770 6.90 790 7.25 805 7.50 820 7.75 835 8.00 850 8.25 865 8.55            
10,000 640 5.30 660 5.55 680 5.85 700 6.10 715 6.30 730 6.55 750 6.85 765 7.05 780 7.30 800 7.65 815 7.90 830 8.15 845 8.40                    
NOTE  All data is measured external to the unit with dry coil and air filters in place. See Page 23 for Accessory Air Resistance data.
Shaded area denotes optional 71/2 hp drive kit.
Page 15

Page 16
GCS163003235 BLOWER PERFORMANCE
Air
STATIC PRESSURE EXTERNAL TO UNIT  Inches Water Gauge
Air
Volume
(f )
.20 .40 .60 .80 1.00 1.20 1.40 1.60 1.80 2.00
Volume
(cfm) RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
6750 450 1.50 505 2.00 560 2.50 600 2.80 640 3.20 680 3.50 710 4.00 740 4.50 770 4.85 800 5.15
7000 465 1.70 515 2.20 565 2.70 610 3.05 650 3.40 685 3.80 720 4.30 745 4.70 775 5.05 810 5.35
7250 480 2.00 525 2.30 575 2.80 620 3.15 660 3.55 690 4.00 725 4.55 750 4.90 780 5.30 820 5.50
7500 490 2.20 540 2.55 585 3.00 625 3.35 665 3.80 700 4.20 730 4.75 760 5.15 790 5.55 825 5.80
7750 505 2.40 550 2.80 590 3.15 635 3.55 670 4.00 705 4.40 740 5.00 770 5.40 800 5.75 835 6.05
8000 515 2.60 580 3.00 605 3.40 640 3.70 680 4.20 715 4.75 745 5.30 780 5.80 810 6.00 840 6.40
8250 530 2.80 575 3.25 615 3.60 650 4.00 685 4.50 725 5.15 755 5.55 790 6.05 820 6.25 850 6.70
8500 540 3.10 585 3.45 625 3.90 660 4.35 695 4.75 730 5.40 765 5.90 800 6.30 825 6.55 855 6.90
8750 560 3.30 600 3.75 635 4.10 670 4.60 705 5.10 740 5.75 775 6.25 805 6.50 835 6.80 860 7.25
9000 570 3.60 610 3.95 645 4.40 680 4.90 715 5.45 750 6.10 785 6.60 810 6.80 840 7.20 865 7.60
9250 580 3.85 625 4.25 650 4.70 690 5.25 725 5.90 760 6.45 795 6.90 820 7.10 850 7.60 875 7.90
9500 600 4.25 635 4.55 665 5.20 700 5.60 740 6.25 770 6.85 805 7.15 825 7.40 855 7.85 880 8.75
9750 610 4.40 640 4.90 675 5.35 710 5.90 745 6.60 780 7.20 810 7.45 840 7.75 860 8.25 890 8.75
10,000 625 4.80 655 5.20 690 5.75 720 6.40 760 6.90 790 7.50 815 7.70 845 8.15 870 8.60 905 9.20
10,250 635 5.10 665 5.60 700 6.10 735 6.75 770 7.40 800 7.80 820 8.00 855 8.50 880 9.00        
10,500 645 5.50 680 6.00 710 6.60 745 7.20 780 7.85 810 8.20 830 8.40 860 8.90 890 9.50        
10,750 660 5.80 690 6.40 725 7.00 755 7.60 790 8.15 815 8.30 840 8.60 870 9.40 900 9.90        
11,000 670 6.20 705 6.75 735 7.40 765 8.00 800 8.50 820 8.70 850 9.25 880 9.75                
11,250 685 6.60 720 7.35 745 7.85 780 8.50 810 7.85 830 9.15 860 9.50 890 10.30                
11,500 700 7.15 730 7.75 760 8.35 790 8.80 815 9.10 840 9.60 870 10.25 900 10.90                
11,750 710 7.40 740 8.20 770 8.75 800 9.20 820 9.55 850 10.10 880 10.80                        
12,000 725 8.10 755 8.75 785 9.25 810 9.60 835 10.00 860 10.60                                
12,250 740 8.60 765 9.20 800 9.70 820 10.00 845 10.60 870 11.20                                
12,500 750 9.15 780 9.70 810 10.10 830 10.50 860 11.10                                        
NOTE  All data is measured external to the unit with the air filter in place.
GCS163003470 BLOWER PERFORMANCE
Air
STATIC PRESSURE EXTERNAL TO UNIT  Inches Water Gauge
Air
Volume
(f )
.20 .40 .60 .80 1.00 1.20 1.40 1.60 1.80 2.00
Volume
(cfm) RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
6750 465 1.90 510 2.00 550 2.40 590 2.70 630 3.10 660 3.35 700 3.80 730 4.20 760 4.55 790 4.85
7000 475 1.90 520 2.20 560 2.60 600 2.90 640 3.25 670 3.60 705 4.00 740 4.40 770 4.75 800 5.25
7250 490 2.00 535 2.40 580 2.80 610 3.10 650 3.50 680 4.10 715 4.25 750 4.65 780 5.10 810 5.60
7500 500 2.20 540 2.60 585 3.00 620 3.25 660 3.70 690 4.20 725 4.55 760 4.90 785 5.40 820 6.00
7750 515 2.40 560 2.80 600 3.20 640 3.60 670 4.00 700 4.40 735 4.75 765 5.20 795 5.75 830 6.40
8000 530 2.70 570 3.10 610 3.40 645 3.80 680 4.25 710 4.70 745 5.10 775 5.50 805 6.10 840 6.70
8250 545 2.90 585 3.30 620 3.65 660 4.00 690 4.50 720 4.95 755 5.40 785 5.80 815 6.40 845 7.00
8500 560 3.20 600 3.50 635 3.85 670 4.40 700 4.85 735 5.30 765 5.75 795 6.25 825 6.80 855 7.30
8750 570 3.40 610 3.80 645 4.20 680 4.70 710 5.20 745 5.60 775 6.10 805 6.60 835 7.10 865 7.70
9000 585 3.70 625 4.10 660 4.50 690 5.05 720 5.50 755 5.90 785 6.50 820 7.05 845 7.55 875 8.05
9250 600 3.90 640 4.40 675 4.90 705 5.40 740 5.85 770 6.40 800 6.80 830 7.50 855 7.90 880 8.50
9500 615 4.25 650 4.70 685 5.30 720 5.75 750 6.25 780 6.80 810 7.30 840 7.80 865 8.30 890 8.90
9750 630 4.60 665 5.10 700 5.70 730 6.20 760 6.60 790 7.20 820 7.75 850 8.25 885 8.90 905 9.40
10,000 645 4.60 680 5.50 710 6.00 745 6.60 775 7.20 800 7.60 830 8.20 860 8.60 890 9.20 915 9.85
10,250 660 5.30 695 5.90 720 7.40 760 6.95 785 7.55 820 8.10 845 8.60 870 9.05 900 9.75 935 10.60
10,500 675 5.75 705 6.30 740 6.85 770 7.40 800 7.90 830 8.60 855 8.90 880 9.50 915 10.35 940 10.90
10,750 690 6.25 720 6.70 755 7.30 780 7.80 810 8.40 840 8.95 865 9.40 890 9.90 920 10.75 945 11.30
11,000 705 6.65 735 7.20 765 7.70 795 8.25 825 8.90 850 9.35 880 9.80 905 10.50 930 11.20        
11,250 715 7.00 750 7.70 780 8.30 810 8.85 840 9.35 960 9.80 890 10.40 915 11.00                
11,500 730 7.50 760 8.20 795 8.75 820 9.35 850 9.85 875 10.35 900 11.00                        
11,750 745 8.10 775 8.65 810 9.25 840 9.80 880 10.25 885 10.80                                
12,000 760 8.55 790 9.20 820 9.75 850 10.35 875 10.80 900 11.50                                
12,250 775 9.10 805 9.70 835 10.25 860 10.80 885 11.40                                        
12,500 790 9.75 820 10.25 845 10.75 870 11.30                                                
NOTE  All data is measured external to the unit with the air filter in place.

Page 17
ACCESSORY AIR RESISTANCE
Total Resistance (inches water gauge)
Unit
Mdl
Air
Vl
Wet
REMD16M
EMDH16M
RTD11 StepDown Diffuser
FD11
Ut
Model
No.
Volume
(cfm)
Wet
Evaporator
Coil
REMD16M
Downflo
Economizer
EMDH16M
Horizontal
Economizer 2 Ends
Open
1 Side
2 Ends
Open
All Ends
& Sides
Open
FD11
Flush
Diffuser
2400 .12 .03 .03 .21 .18 .15 .14
2600 .13 .04 .04 .24 .21 .18 .17
2800 .14 .04 .04 .27 .24 .21 .20
GCS16823 3000 .16 .05 .05 .32 .29 .25 .25
GCS16823
GCS16953 3200 .18 .05 .05 .41 .37 .32 .31
3400 .19 .06 .06 .50 .45 .39 .37
3600 .21 .06 .06 .61 .54 .48 .44
3800 .23 .07 .07 .73 .63 .57 .51
3600 .12 .03 .03 .36 .28 .23 .15
3800 .13 .04 .04 .40 .32 .26 .18
4000 .14 .04 .04 .44 .36 .29 .21
4200 .15 .05 .05 .49 .40 .33 .24
GCS161353 4400 .16 .05 .05 .54 .44 .37 .27
GCS16 1353
4600 .17 .06 .06 .60 .49 .42 .31
4800 .18 .07 .07 .65 .53 .46 .35
5000 .19 .09 .09 .69 .58 .50 .39
5200 .20 .10 .10 .75 .62 .54 .43
4200 .10 .06 .06 .22 .19 .16 .10
4400 .11 .07 .07 .28 .24 .20 .12
4600 .12 .07 .07 .34 .29 .24 .15
4800 .13 .08 .08 .40 .34 .29 .19
GCS161603 5000 .14 .08 .08 .46 .39 .34 .23
GCS16 1603
5200 .15 .09 .09 .52 .44 .39 .27
5400 .16 .10 .10 .58 .49 .43 .31
5600 .17 .12 .12 .64 .54 .47 .35
5800 .18 .13 .13 .70 .59 .51 .39
5000 .07 .11     .51 .44 .39 .27
5200 .08 .12     .56 .48 .42 .30
5400 .09 .13     .61 .52 .45 .33
5600 .10 .14     .66 .56 .48 .36
5800 .11 .15     .71 .59 .51 .39
6000 .12 .16     .76 .63 .55 .42
GCS16 1853
6200 .13 .17     .80 .68 .59 .46
GCS161853 6400 .14 .18     .86 .72 .63 .50
6600 .15 .20     .92 .77 .67 .54
6800 .16 .22     .99 .83 .72 .58
7000 .17 .23     1.03 .87 .76 .62
7200 .18 .24     1.09 .92 .80 .66
7400 .19 .25     1.15 .97 .84 .70
7600 .20 .26     1.20 1.02 .88 .74
6000 .06 .01     .36 .31 .27 .29
6500 .07 .02     .42 .36 .31 .34
7000 .08 .02     .49 .41 .36 .40
GCS16

2553
7500 .09 .04     .51 .46 .41 .45
GCS16

2553
GCS162753 8000 .10 .06     .59 .49 .43 .50
GCS16 2753
GCS163003 8500 .11 .08     .69 .58 .50 .57
9000 .12 .10     .79 .67 .58 .66
9500 .13 .12     .89 .75 .65 .74
10,000 .15 .14     1.00 .84 .73 .81

Page 18
PED16185 & PED16300
POWER EXHAUST FANS PERFORMANCE
Model No.
Air Volume
(cfm
Exhausted)
Return Air System
Static Pressure
(Inches Water Gauge)
4200 0
3800 .05
PED16 185
3500 .10
PED16185
3200 .15
2700 .20
2200 .25
6300 0
5750 .05
PED16300 5200 .10
4625 .15
4050 .20
CEILING DIFFUSER AIR THROW DATA
Air Volume
*Effective Throw Range (feet)
Model No. Air Volume
(cfm) RTD11
StepDown
FD11
Flush
3000 27  33 25  30
GCS16823
GCS16

953
3375 30  37 28  34
GCS16

953
3750 34  41 31  38
4400 34  42 32  40
GCS161353 4950 38  47 36  45
GCS 6 353
5500 43  52 40  50
4200 39  46 40  48
GCS161603 5000 41  50 43  52
GCS 6 603
5800 43  52 45  54
6000 45  55 48  55
GCS161853 6750 47  56 50  58
GCS 6 853
7500 49  58 55  66
GCS16 2553
8000 39  44 53  62
GCS162553
GCS162753
GCS16 3003
9000 47  56 55  64
GCS163003 10,000 49  58 57  67
*Throw is the horizontal or vertical distance an airstream travels on leaving the outletor
diffuser before the maximum velocity is reduced to 50 ft. per minute. Four sides open.
FIGURE 1
823/953 PARTS ARRANGEMENT
COMPRESSOR
AND CONTROL BOX ACCESS
CONDENSER COIL
FILTER SECTION
HEATING
CONTROLS
BURNERS
INDOOR BLOWER
COMBUSTION
AIR BLOWER
HEAT EXCHANGER
1st STAGE
COMPRESSOR
2nd STAGE
COMPRESSOR
1st STAGE EVAPORATOR
2nd STAGE EVAPORATOR
GAS VALVE
BLOWER ACCESS
CONDENSER
FAN

Page 19
FIGURE 2
1353/1603 PARTS ARRANGEMENT
COMPRESSOR
AND CONTROL BOX
ACCESS 1st STAGE
CONDENSER COIL
2nd STAGE
CONDENSER COIL
2nd STAGE
CONDENSER FAN
FILTER SECTION
HEATING
CONTROLS
BURNERS
INDOOR BLOWER
COMBUSTION
AIR BLOWER
HEAT EXCHANGER
1st STAGE
COMPRESSOR
2nd STAGE
COMPRESSOR
1st STAGE EVAPORATOR
2nd STAGE EVAPORATOR
GAS VALVE
BLOWER ACCESS
FIGURE 3
1853 PARTS ARRANGEMENT
LEFT CONDENSER FAN
FILTER ACCESS
HEATING ACCESS
BLOWER ACCESS
COMPRESSOR/
CONTROL ACCESS
RIGHT CONDENSER COIL
LEFT
CONDENSER
COIL
FILTERS EVAPORATORS
HEAT EXCHANGER
BURNER CONTROL
BOX
BURNERS
BLOWER
BLOWER MOTOR
COMPRESSORS
CONTROL BOX
COMBUSTION AIR
BLOWER

Page 20
FIGURE 4
2553/2753/3003 PARTS ARRANGEMENT (SLAB COIL SHOWN)
CONTROL BOX
1st STAGE COMPRESSOR ACCESS
1st STAGE
CONDENSER COIL
2nd STAGE
CONDENSER COIL
2nd STAGE
CONDENSER FAN
FILTER SECTION HEATING
CONTROLS
BOX
BURNERS
GAS VALVE
INDOOR BLOWER
COMBUSTION AIR
BLOWER
HEAT EXCHANGER
CONDENSER COIL AIR INTAKE
1st STAGE
COMPRESSOR
2nd STAGE
COMPRESSOR 1st STAGE EVAPORATOR
2nd STAGE EVAPORATOR
GAS VALVE
BLOWER ACCESS
FIGURE 5
GCS16823, 953 CONTROL BOX COMPONENTS
K2 K1 K3
K13
K10
T1
T3
INDOOR BLOW
ER
CONTACTOR K3
1st STAGE
COMPRESSOR
CONTACTOR K1
2nd STAGE
COMPRESSOR
CONTACTOR K2
COMBUSTION AIR
BLOWER TRANSFORMER T3
(460V & 575V ONLY)
COMBUSTION AIR
BLOWER RELAY K13
CONDENSER FAN
RELAY K10
CONREOL
TRANSFORMER T1
FUSE F1
TERMINAL STRIP TB1
S3