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530.18-N6Y
General ................................................................................ 1
Inspection............................................................................. 1
Reference............................................................................. 1
Approvals ............................................................................. 1
Nomenclature....................................................................... 2
Limitations............................................................................ 3
Location ............................................................................... 3
Rigging and Handling .......................................................... 3
Clearances........................................................................... 3
Ductwork .............................................................................. 3
Fixed Outdoor Air Intake Damper ........................................ 4
Condensate Drain ................................................................ 4
Compressors........................................................................ 4
Filters ................................................................................... 4
Service Access .................................................................... 4
Thermostat........................................................................... 5
Power and Control Wiring .................................................... 5
Combustion Discharge ........................................................ 5
Gas Piping ........................................................................... 5
Gas Connection ................................................................... 6
L.P . Units, Tanks and Piping ................................................. 6
Vent and Combustion Air Hoods.......................................... 6
Optional Economizer/Mot. Damper Rain Hood ................... 7
Optional Power Exhaust Rain Hood .................................... 9
Cooling System.................................................................. 15
Preliminary Operation Cooling........................................... 15
Cooling Sequence of Operation......................................... 15
Safety Controls (Cooling)................................................... 15
Heating System.................................................................. 15
Safety Controls (Heating)................................................... 16
Heat Anticipator Setpoints ................................................. 16
Pre-Start Check List........................................................... 16
Operating Instructions........................................................ 17
Post-Start Check List ......................................................... 17
Manifold Gas Pressure Adjustment ................................... 17
Pilot Checkout .................................................................... 17
Burner Instructions............................................................. 17
Burner Air Shutter Adjustment........................................... 18
Checking Supply Air CFM.................................................. 18
Adjustment of Temperature Rise........................................ 19
Checking Gas Input ........................................................... 19
Secure Owner's Approval .................................................. 19
PRODUCT CATEGORY
D = Single Package Air Conditioner
(Air Cooled)
PRODUCT GENERATION
2 = 2nd Generation
PRODUCT IDENTIFIER
CG = Gas/Electric
2
TABLE OF CONTENTS
PRODUCT NOMENCLATURE
D
2
C
G
1
8
NOMINAL COOLING
CAPACITY
180 = 15 Tons
240 = 20 Tons
MAINTENANCE & TROUBLESHOOTING
Normal Maintenance ......................................................... 20
Cleaning Flue Passages and Heating Elements ............... 20
Troubleshooting.................................................................. 21
Replacement Parts ............................................................ 23
No.
1
Unit Application Data ..................................
2
Control Wire Sizes ......................................
3
Gas Heat Application Data .........................
4
Pipe Sizing ..................................................
5
Physical Data ..............................................
6
Electrical Data.............................................
7
Four And Six Point Loads ...........................
8
Supply Air Blower Perf. 15 Ton....................
9
Supply Air Blower Perf. 20 Ton....................
10
Static Resistances ......................................
11
Power Exhaust Performance ......................
12
Blower Motor and Drive Data......................
13
Limit Control Setting ...................................
14
Gas Rate - Cubic Feet Per Hour.................
No.
1
Typical Rigging............................................
2
Center of Gravity.........................................
3
Fixed Outdoor Air Damper Assembly .........
4
Recommended Drain Piping.......................
5
Typical Field Wiring .....................................
6
External Supply Connection .......................
7
Bottom Supply Connection .........................
8
Vent and Combustion Air Hoods.................
9
Adjusting Enthalpy Setpoint........................
10
Dimensions and Clearances.......................
11
Four and Six Point Loads............................
12
Gas Valve Piping.........................................
13
Gas Valve and Controls ..............................
14
Typical Gas Valve ........................................
15
Proper Flame Adjustment...........................
16
Typical Flame Appearance .........................
17
Belt Adjustment...........................................
18
Pressure Drop versus Supply Air CFM ......
19
Typical Flue Baffle Installation ....................
0
N
2
4
0
2
NOMINAL HEATING
OUTPUT CAPACITY
GAS
240 = 240 MBH
320 = 320 MBH
FACTORY INSTALLED
HEAT
N = Natural Gas
TABLES
Description
FIGURES
Description
5
E
C
FACTORY INSTALLED
OPTION CODE
EC = Sing. Input Economizer
DK = Diff. Input Economizer
FD = Sing. Input Economizer
w/Power Exhaust
CF = Diff. Input Economizer
w/Power Exhaust
BG = Motor Outdoor Air
Damper
VOLTAGE CODE
25 = 208/230-3-60
46 = 460-3-60
58 = 575-3-60
Unitary Products Group
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