Table Of Contents; Nomenclature - York DHUC 036 Installation Instruction

530.18-N8W
General ................................................................................ 1
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
OPERATION
Cooling System.................................................................. 14
Cooling Sequence of Operation......................................... 14
Safty Controls (Cooling)..................................................... 14
Heating Sequence of Operation ........................................ 14
Safety Controls (Heating) .................................................. 14
Heat Anticipator Setpoints ................................................. 15
Pre-Start Check List........................................................... 15
START-UP
Operating Instructions........................................................ 15
Post-Start Check List (Gas) ............................................... 15
Manifold Gas Pressure Adjustment ................................... 15
Pilot Checkout.................................................................... 16
Burner Instructions............................................................. 16
Burner Air Shutter Adjustment ........................................... 16
Supply Air Blower and Temperature Rise Adjustment ....... 16
Checking Gas Input ........................................................... 17
Secure Owner's Approval .................................................. 17
PRODUCT CATEGORY
D = Single Package Air Conditioner
(Air Cooled)
PRODUCT GENERATION
B = 2nd Generation
H = 7th Generation
PRODUCT IDENTIFIER
UC = Gas/Electric
2

TABLE OF CONTENTS

PRODUCT NOMENCLATURE
D H U C - F
VOLTAGE CODE
-F = 208/230-1-60
-T = 208/230-3-60
-W = 460-3-60
-X = 575-3-60
MAINTENANCE & TROUBLESHOOTING
Normal Maintenance.......................................................... 18
Cleaning Flue Passages and Heating Elements ............... 18
Troubleshooting .........................................................18 & 19
TABLES
No. Description
1 Unit Application Data ..................................
2 Gas Heat Application Data..........................
3 Pipe Sizing .................................................
4 Static Resistances ......................................
5 Physical Data..............................................
6 Supply Air Blower Perf
7 Motor & Drive Data-Belt-Drive Blower ........
8 Supply Air Blower Perf. 3 & 4 Ton Belt-Drive
9 Supply Air Blower Perf. 5 & 6 Ton Belt-Drive 10
10 Electrical Data Direct-Drive.........................
11 Electrical Data Belt-Drive............................
12 Superheat, 036 ...........................................
13 Superheat, 048 ...........................................
14 Superheat, 060 ...........................................
15 Superheat, 072 ...........................................
16 Limit Control Setting ...................................
17 Belt Drive Supply Air Motor Pulley Adj........
18 Gas Rate - Cubic Feet Per Hour ................
FIGURES
No. Description
1 Recommended Drain Piping.......................
2 Typical Field Wiring.....................................
3 External Supply Connection .......................
4 Bottom Supply Connection .........................
5 Vent and Combustion Air Hoods.................
6 Center of Gravity.........................................
7 Dimensions and Clearances.......................
8 Gas Valve Piping.........................................
9 Gas Valves..................................................
10 Proper Flame Adjustment ...........................
11 Typical Flame Appearance .........................
12 Belt Adjustment ...........................................
13 Press. Drop versus Supply Air CFM ...........
0 3 6 N 0 5 0
NOMINAL COOLING
CAPACITY
036 = 3 Ton
048 = 4 Ton
060 = 5 Ton
072 = 6 Ton
Page
3
4
5
7
7
8
. 3 - 6 Ton Direct-Drive
8
9
11
11
11
12
12
12
15
16
17
Page
4
5
6
6
7
7
13
14
15
16
16
16
17
NOMINAL GAS HEATING
INPUT CAPACITY
050 = 50 MBH
075 = 75 MBH
100 = 100 MBH
125 = 125 MBH
FACTORY INSTALLED
HEAT
N = Gas Heat Installed
Unitary Products Group