York D2CG 072 User Manual
General ................................................................................ 1
Inspection............................................................................. 1
Reference ............................................................................ 1
Approvals ............................................................................. 1
Nomenclature....................................................................... 2
Inspection............................................................................. 1
Reference ............................................................................ 1
Approvals ............................................................................. 1
Nomenclature....................................................................... 2
INSTALLATION
Limitations ............................................................................ 3
Location ............................................................................... 3
Rigging and Handling .......................................................... 3
Clearances........................................................................... 3
Ductwork .............................................................................. 3
Filters ................................................................................... 4
Condensate Drain ................................................................ 4
Service Access..................................................................... 4
Thermostat ........................................................................... 4
Power and Control Wiring .................................................... 4
Blower Speed Selection....................................................... 4
Scroll Compressors.............................................................. 4
Combustion Discharge ........................................................ 4
Disconnect Switch Bracket For Optional Belt-Drive ............ 5
Gas Piping ........................................................................... 5
Gas Connection ................................................................... 6
L.P. Units, Tanks and Piping ................................................ 6
Low NOx Application............................................................ 6
Vent and Combustion Air Hoods.......................................... 7
Optional Economizer Rain Hood ................................... 7 & 8
Location ............................................................................... 3
Rigging and Handling .......................................................... 3
Clearances........................................................................... 3
Ductwork .............................................................................. 3
Filters ................................................................................... 4
Condensate Drain ................................................................ 4
Service Access..................................................................... 4
Thermostat ........................................................................... 4
Power and Control Wiring .................................................... 4
Blower Speed Selection....................................................... 4
Scroll Compressors.............................................................. 4
Combustion Discharge ........................................................ 4
Disconnect Switch Bracket For Optional Belt-Drive ............ 5
Gas Piping ........................................................................... 5
Gas Connection ................................................................... 6
L.P. Units, Tanks and Piping ................................................ 6
Low NOx Application............................................................ 6
Vent and Combustion Air Hoods.......................................... 7
Optional Economizer Rain Hood ................................... 7 & 8
OPERATION
Cooling System.................................................................. 15
Cooling Sequence of Operation......................................... 15
Safety Controls (Cooling)................................................... 15
Heating Sequence of Operation ........................................ 15
Safety Controls (Heating) .................................................. 15
Heat Anticipator Setpoints ................................................. 16
Pre-Start Check List........................................................... 16
Cooling Sequence of Operation......................................... 15
Safety Controls (Cooling)................................................... 15
Heating Sequence of Operation ........................................ 15
Safety Controls (Heating) .................................................. 15
Heat Anticipator Setpoints ................................................. 16
Pre-Start Check List........................................................... 16
START-UP
Operating Instructions........................................................ 16
Post-Start Check List (Gas) ............................................... 16
Manifold Gas Pressure Adjustment ................................... 16
Pilot Checkout.................................................................... 17
Burner Instructions............................................................. 17
Burner Air Shutter Adjustment ........................................... 17
Supply Air Blower and Temperature Rise Adjustment ....... 17
Checking Gas Input ........................................................... 18
Secure Owner’s Approval .................................................. 18
Post-Start Check List (Gas) ............................................... 16
Manifold Gas Pressure Adjustment ................................... 16
Pilot Checkout.................................................................... 17
Burner Instructions............................................................. 17
Burner Air Shutter Adjustment ........................................... 17
Supply Air Blower and Temperature Rise Adjustment ....... 17
Checking Gas Input ........................................................... 18
Secure Owner’s Approval .................................................. 18
MAINTENANCE & TROUBLE SHOOTING
Normal Maintenance.......................................................... 19
Cleaning Flue Passages and Heating Elements ............... 19
Troubleshooting ......................................................... 19 & 20
Cleaning Flue Passages and Heating Elements ............... 19
Troubleshooting ......................................................... 19 & 20
TABLES
No. Description Page
1
Unit Application Data ..................................
3
2
Gas Heat Application Data..........................
4
3
Pipe Sizing .................................................
5
4
Static Resistances ......................................
8
5
Physical Data ..............................................
9
6
Supply Air Blower Perf
. 3 - 6 Ton Direct-Drive
9
7
Motor & Drive Data-Belt-Drive Blower ........
9
8
Supply Air Blower Perf. 3 & 4 Ton Belt-Drive
10
9
Supply Air Blower Perf. 5 & 6 Ton Belt-Drive 11
10
Electrical Data Direct-Drive.........................
12
11
Electrical Data Belt-Drive............................
12
12
Superheat, 036 ...........................................
12
13
Superheat, 048 ...........................................
13
14
Superheat, 060 ...........................................
13
15
Superheat, 072 ...........................................
13
16
Limit Control Setting ...................................
16
17
Belt Drive Supply Air Motor Pulley Adj........
17
18
Gas Rate - Cubic Feet Per Hour ................
18
FIGURES
No. Description Page
1
Recommended Drain Piping.......................
4
2
Typical Field Wiring.....................................
5
3
External Supply Connection .......................
6
4
Bottom Supply Connection .........................
6
5
Vent and Combustion Air Hoods.................
7
6
Economizer Rain Hood Assembly ..............
7
7
Enthalpy Setpoint Adjustment.....................
8
8
Center of Gravity.........................................
9
9
Dimensions and Clearances.......................
14
10
Gas Valve Piping.........................................
15
11
Gas Valves..................................................
16
12
Proper Flame Adjustment ...........................
17
13
Typical Flame Appearance .........................
17
14
Belt Adjustment ...........................................
17
15
Press. Drop versus Supply Air CFM ...........
18
TABLE OF CONTENTS
D
7
C
G
4
N
PRODUCT NOMENCLATURE
PRODUCT GENERATION
2 = 2nd Generation
7 = 7th Generation
PRODUCT CATEGORY
D = Single Package Air Conditioner
(Air Cooled)
(Air Cooled)
PRODUCT IDENTIFIER
CG = Gas/Electric
VOLTAGE CODE
06 = 208/230-1-60
25 = 208/230-3-60
46 = 460-3-60
58 = 575-3-60
25 = 208/230-3-60
46 = 460-3-60
58 = 575-3-60
NOMINAL GAS HEATING
OUTPUT CAPACITY
036 = 3 Ton
048 = 4 Ton
060 = 5 Ton
072 = 6 Ton
048 = 4 Ton
060 = 5 Ton
072 = 6 Ton
0
0
3
0
6
2
5
FACTORY INSTALLED
HEAT
N = Gas Heat Installed
NOMINAL COOLING
CAPACITY
040 = 40 MBH
060 = 60 MBH
079 = 79 MBH
099 = 99 MBH
530.18-N8Y
2
Unitary Products Group