York DNH018 - WIRING DIAGRAMS AND LEGEND; CONTROL AND POWER WIRING DIAGRAMS

036-21233-002-A-0903
Unitary Products Group 19
FIGURE 2 - FIELD WIRING DIAGRAM CONTROL WIRING
FIGURE 3 - POWER WIRING FIELD DIAGRAM
TABLE 15: ADDITIONAL STATIC PRESSURE RESISTANCE 3-1/2 - 5 TON (DNH042 - 060)
1
DESCRIPTION
RESISTANCE, IWG
CFM
1,100 1,200 1,300 1,400 1,500 1,600 1,700 1,800 1,900 2,000
WET EVAPORATOR COIL .02 .03 .04 .05 .06 .07 .07 .08 .09 .09
ECONOMIZER
2
.02 .02 .02 .03 .03 .04 .04 .04 .05 .05
FILTER FRAME KIT .04 .04 .05 .05 .06 .07 .08 .09 .10 .11
1.
Deduct these resistance values from the available external static pressure shown in Table 10, 11, 12, and 13
2.
The pressure through the economizer is greater for 100% outdoor air then for 100% return air. If the resistance of the return air
duct system is less then 0.25 IWG, the unit will deliver less CFM during full economizer operation.
R
G
W
R
G
C
YY
W
C
PROGRAMMABLE
THERMOSTAT ONLY
**
*
*=Minimumwiresizeof18AWG
wire should be used for all
field installed 24 volt wire.
THERMOSTAT
UNIT TERMINAL STRIP
NOTE:
HEAT ANTICIPATOR
SHOULD BE SET AT 0.35
AMPS FOR ALL MODELS.
24 VOLT
TRANSFORMER
GROUND
LU G
REFER TO ELECTRICAL
DATA TABLES TO SIZE
THE DISCO NNECT
FIELD-SUPPLIED
DISCONNECT
CONTACTOR
FIELD-SUPPLIED
DISCONNECT
CONTACTOR
GROUND
LU G
REFER TO ELECTRICAL
DATA TABLES TO SIZE
THE DISCO NNECT
SINGLE
PHASE
PO W ER
SUPPLY
THREE
PHASE
PO W ER
SUPPLY