Unitary products group DAHC180, Installation Instruction

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2 Unitary Products Group
530.22-N5W
General................................................................................1
Inspection ............................................................................1
Reference ............................................................................1
Approvals ............................................................................1
Nomenclature ......................................................................2
INSTALLATION
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 ..........................................................................4
Power and Control Wiring ...................................................4
Optional Electric Heaters.....................................................5
Optional Economizer/Mot. Damper Rain Hood ...................5
Optional Power Exhaust Rain Hood ....................................7
OPERATION
Cooling System .................................................................14
Preliminary Operation Cooling ..........................................14
Cooling Sequence of Operation ........................................14
Safety Controls ..................................................................14
Heating Sequence of Operation ........................................14
Heat Anticipator Setpoints .................................................15
Checking Supply Air CFM .................................................15
Secure Owner's Approval..................................................16
MAINTENANCE
Normal Maintenance .........................................................16
TABLES
No. Description Page
1 Unit Application Data.................................. 3
2 Control Wire Sizes ..................................... 5
3 Electric Heat Application Data.................... 5
4 Physical Data ............................................. 8
5 Supply Air Blower Perf. 15 Ton .................. 10
6 Supply Air Blower Perf. 20 Ton .................. 11
7 Static Resistances...................................... 12
8 Power Exhaust Performance ..................... 12
9 Blower Motor and Drive Data ..................... 12
10 Electrical Data (Basic Units)....................... 13
11 Electrical Data (Units w/Elec. Heat) ........... 13
12 Heat Anticipator Setpoints.......................... 15
FIGURES
No. Description Page
1 Typical Rigging........................................... 3
2 Center of Gravity ........................................ 3
3 Fixed Outdoor Air Damper ......................... 4
4 Recommended Drain Piping ...................... 4
5 Typical Field Wiring .................................... 5
6 Adjusting Enthalpy Setpoint ....................... 8
7 Dimensions and Clearances ...................... 9
8 Belt Adjustment .......................................... 15
9 Pressure Drop versus Supply Air CFM ...... 15
TABLE OF CONTENTS
D A H C - T 0 8 8 E
PRODUCT NOMENCLATURE
PRODUCT GENERATION
A = 1st Generation
PRODUCT CATEGORY
D = Single Package Air Conditioner
(Air-Cooled)
PRODUCT IDENTIFIER
HC = Cooling only or
Electric/Electric VOLTAGE CODE
-T = 208/230-3-60
-W = 460-3-60
-X = 575-3-60
NOMINAL COOLING
CAPACITY
180 = 15 Ton
240 = 20 Ton
FACTORY INSTALLED
OPTION CODE
A = Sing. Input Economizer
C = Sing. Input Economizer
w/ Power Exhaust
R = Motorized Outdoor
Air Damper
1 1 0
NOMINAL HEATING
CAPACITY
ELECTRIC
018 = 18 KW
036 = 36 KW
054 = 54 KW
072 = 72 KW
A
FACTORY INSTALLED
HEAT
A = No Heat
E = Electric