York DM 300 User Manual
262259-YTG-B-0107
Unitary Products Group
9
NOTE: All gas units are two-stage heating.
First stage is 50% of total.
S.S.E. = Steady State Efficiency (80%) - output divided by input.
First stage is 50% of total.
S.S.E. = Steady State Efficiency (80%) - output divided by input.
TABLE 1: SOUND POWER RATING
1
UNIT
SIZE
CFM
ESP
BLOWER
SOUND POWER (db 10
-12
Watts)
Octave Band Centerline Frequency (Hz)
SWL
dB(A)
dB(A)
@
10Ft.
2
IWG
RPM
BHP
63
125
250
500
1,000
2,000
4,000
8,000
180
6,000
1.00
1,080
4.60
99
99
89
82
84
77
72
67
89
56
240
8,000
1.00
1,120
6.65
102
102
92
85
87
80
75
70
92
59
300
10,000
1.30
1160
12.5
108
108
98
91
93
86
81
76
98
65
1. These values have been accessed using a model of sound propagation from a point source into the hemispheric\free field. The
dBA values provided are to be used for reference only. Calculation of dBA values cover matters of system design and the fan
manufacture has no way of knowing the details of each system. This constitutes and expectation to any specification or guarantee
requiring a dBA value or sound data in any other form than sound power level ratings.
manufacture has no way of knowing the details of each system. This constitutes and expectation to any specification or guarantee
requiring a dBA value or sound data in any other form than sound power level ratings.
2. At a distance of 10 feet from the blower.
TABLE 2: CAPACITY RATINGS - (ARI 360)
1
1. Certified in accordance with the Unitary Large Equip-
ment certification program which is based on ARI Stan-
dard 340/360.
dard 340/360.
MODEL
MBH
EER
2
2. EER = Energy Efficiency Ratio at full load - the cooling
capacity in Btu’s per hour (Btuh) divided by the power
input in watts, expressed in Btuh per watt (Btuh/watt).
input in watts, expressed in Btuh per watt (Btuh/watt).
IPLV
3
3. IPLV = Integrated Part Load Value.
COOLING ONLY
DM180C/E00
176
8.7
9.2
DM240C/E00
234
8.6
8.05
DM300C/E00
272
8.5
9.2
COOLING WITH GAS HEAT
DM180N/S
176
8.5
9.0
DM240N/S
232
8.5
8.05
DM300N/S
272
8.5
9.0
COOLING WITH ELECTRIC HEAT
DM180E18
176
8.7
9.2
DM180E36
176
8.6
9.1
DM180E54
174
8.5
8.7
DM180E72
174
8.5
8.7
DM240E18
234
8.5
8.05
DM240E36
234
8.5
8.05
DM240E54
232
8.5
8.05
DM240E72
232
8.5
8.05
DM300E18
272
8.5
9.1
DM300E36
272
8.5
9.1
DM300E54
270
8.5
9.0
DM300E72
270
8.5
9.0
TABLE 3: GAS HEAT RATIINGS
MODEL
MBH INPUT
MBH OUTPUT
DM180N/S24
300
240
DM180N/S32
400
320
DM240N/S24
300
240
DM240N/S32
400
320
DM300N/S24
300
240
DM300N/S32
400
320
For units with VFD and electric or gas heat, the
speed of the indoor blower motor continues to
be controlled by duct static pressure via the
VAV control board.
speed of the indoor blower motor continues to
be controlled by duct static pressure via the
VAV control board.
If there are VAV boxes present in the duct sys-
tem, the boxes must be driven to the full-open
position using a customer-supplied power
source to assure adequate airflow across elec-
tric heating elements or gas heat exchanger
tubes.
tem, the boxes must be driven to the full-open
position using a customer-supplied power
source to assure adequate airflow across elec-
tric heating elements or gas heat exchanger
tubes.