York MagnaDRY - Blower Performance 7-1;2 Ton Optional Motor - Downshot (Imperial); Blower Performance 7-1;2 Ton Optional Motor - Downshot (Metric)

265485-XTG-B-1208
22 Johnson Controls Unitary Products
NOTES FOR TABLES 9 THROUGH 16:
• “Turns Open” refers to the setting of the variable pitch
motor sheave, where “0 Turns Open” is fully closed.
• Blower performance includes dry coil and 2” (51mm)
throw-away filters.
• Blower performance for gas heat includes the maximum
number of heat tubes available for each tonnage.
• ESP (External Static Pressure) given is that available for
the supply and return air duct system. All internal resis
-
tances have been deducted from the total static pressure
of the blower.
TABLE 15: BLOWER PERFORMANCE 7-1/2 TON OPTIONAL MOTOR - DOWNSHOT (IMPERIAL)
ESP
(iwg)
Turns Open
0 1 2 3 4 5
CFM Watts BHP CFM Watts BHP CFM Watts BHP CFM Watts BHP CFM Watts BHP CFM Watts BHP
0.2
-
-
-
- - - - - - - - - 3786 1702 1.83 3476 1489 1.60
0.4
-
-
-
- - - - - - 3727 1791 1.92 3409 1570 1.68 3099 1357 1.46
0.6
-
-
-
3994 2117 2.27 3661 1881 2.02 3335 1652 1.77 3018 1431 1.54 2708 1218 1.31
0.8
-
-
-
3590 1969 2.11 3256 1733 1.86 2931 1504 1.61 2613 1283 1.38 2304 1070 1.15
1.0
3516
2053
2.20
3174 1809 1.94 2841 1573 1.69 2515 1344 1.44 2198 1123 1.21 - - -
1.2
3091
1880
2.02
2749 1636 1.76 2416 1400 1.50 2090 1171 1.26 - - - - - -
1.4
2658
1692
1.82
2316 1448 1.55 - - - - - - - - - - - -
1.6
2218
1486
1.59
- - - - - - - - - - - - - - -
TABLE 16: BLOWER PERFORMANCE 7-1/2 TON OPTIONAL MOTOR - DOWNSHOT (METRIC)
ESP
(Pa)
Turns Open
0 1 2 3 4 5
m
3
/s
In
(kW)
Out
(kW)
m
3
/s
In
(kW)
Out
(kW)
m
3
/s
In
(kW)
Out
(kW)
m
3
/s
In
(kW)
Out
(kW)
m
3
/s
In
(kW)
Out
(kW)
m
3
/s
In
(kW)
Out
(kW)
50
-
-
-
- - - - - - - - - 1.79 1.70 1.36 1.64 1.49 1.19
100
-
-
-
- - - - - - 1.76 1.79 1.43 1.61 1.57 1.26 1.46 1.36 1.09
149
-
-
-
1.89 2.12 1.69 1.73 1.88 1.50 1.57 1.65 1.32 1.42 1.43 1.15 1.28 1.22 0.97
199
-
-
-
1.69 1.97 1.58 1.54 1.73 1.39 1.38 1.50 1.20 1.23 1.28 1.03 1.09 1.07 0.86
249
1.66
2.05
1.64
1.50 1.81 1.45 1.34 1.57 1.26 1.19 1.34 1.08 1.04 1.12 0.90 - - -
299
1.46
1.88
1.50
1.30 1.64 1.31 1.14 1.40 1.12 0.99 1.17 0.94 - - - - - -
349
1.25
1.69
1.35
1.09 1.45 1.16 - - - - - - - - - - - -
398
1.05
1.49
1.19
- - - - - - - - - - - - - - -