York DM 060 User Manual
Page 21
036-21502-002-A-0303
Unitary Products Group
21
TABLE 14: STATIC RESISTANCES
TABLE 15: ELECTRIC HEATER CFM LIMITATIONS
1000
1200
1400
1600
1800
2000
2200
2400
2600
2800
3000
0.07
0.08
0.09
0.11
0.13
0.15
0.17
0.20
0.23
0.26
0.30
5-15KW
0.04
0.05
0.06
0.07
0.08
0.10
0.12
0.14
0.16
0.19
0.22
20-30KW
0.06
0.07
0.08
0.09
0.11
0.13
0.15
0.17
0.20
0.23
0.26
0.06
0.07
0.08
0.09
0.10
0.11
0.12
0.14
0.16
0.19
0.22
0.08
0.10
0.12
0.14
0.16
0.18
0.20
0.23
0.26
0.29
0.32
COOLING ONLY
2
RESISTANCE, IWG
CFM
DESCRIPTION
ECON
OMIZER
1 2
BOTTOM DUCT CONNECTIONS
1
ELECTRIC
HEATERS
3
1. Deduct these resistance values from the available external static pressure shown in SUPPLY AIR BLOWER PERFORMANCE Tables.
2. The pressure through the economizer is greater for 100% outdoor air than for 100% return air. If the resistance of the return air
duct system is less than 0.25 IWG, the unit will deliver less CFM during full economizer operation.
3. Add these resistance values to the available static resistance values on SUPPLY AIR BLOWER PERFORMANCE Tables.
5
7
10
15
20
30
208/230-1-60
1100
1100
1200
1200
1300
-
208/230-3-60
1100
1100
1200
1200
1300
-
460-3-60
-
1100
1200
1200
1300
-
575-3-60
-
-
1200
1200
1300
-
208/230-1-60
1300
1300
1300
1300
1300
-
208/230-3-60
1300
1300
1300
1300
1300
-
460-3-60
-
1300
1300
1300
1300
-
575-3-60
-
-
1300
1300
1400
-
208/230-1-60
1600
1600
1600
1600
1600
1600
208/230-3-60
1600
1600
1600
1600
1600
1600
460-3-60
-
1600
1600
1600
1600
1600
575-3-60
-
-
1600
1600
1600
1800
208/230-1-60
1800
1800
1800
1800
1800
1800
208/230-3-60
1800
1800
1800
1800
1800
1800
460-3-60
-
1800
1800
1800
1800
1800
575-3-60
-
-
1800
1800
1800
1800
3
4
5
6
MINIMUM SUPPLY AIR CFM
HEATER SIZE NOMINAL KW
VOLTAGE
UNIT MODEL SIZE NOMINAL
TONS