Bryant 935CA Installation, Start-Up, Operating And Service And Maintenance Instructions page 22

935CA: Installation, Start-up, Operating and Service and Maintenance Instructions
Unit Size:
Clg/CF Switch settings
5
30080C21
Clg Switches: SW2-3
Clg Default: OFF
CF Switches SW3-3
Low-Clg Default: OFF
OFF
OFF
Cooling
ON
(SW2)
ON
ON
Low-Cooling
ON
(SW3)
Maximum Clg Airflow
CF Switches SW3-3
Cont. Fan Default: OFF
OFF
OFF
OFF
Continuous Fan
ON
(SW3)
ON
ON
ON
Heating (SW1)
Heat Airflow
Unit Size:
Clg/CF Switch settings
6
66100C21
Clg Switches: SW2-3
Clg Default: OFF
CF Switches SW3-3
OFF
OFF
Cooling
OFF
(SW2)
ON
ON
Low-Cooling
ON
(SW3)
ON
Maximum Clg Airflow
CF Switches SW3-3
Cont. Fan Default: OFF
OFF
OFF
OFF
Continuous Fan
ON
(SW3)
ON
ON
ON
Heating (SW1)
Heat Airflow
1.Nominal 350 CFM/ton cooling airflow is delivered with SW1-5 and SW4-3 set to OFF.
Set SW1-5 to ON for nominal 400 CFM/ton (+15% airflow).
Set SW4-3 to ON for nominal 325 CFM/ton (-7% airflow).
Set both SW1-5 and SW4-3 on ON for nominal 370 CFM/ton (+7% airflow).
The above adjustments in airflow are subject to motor horsepower range/capacity
This applies to Cooling and Low-Cooling airflow, but does not affect continuous fan airflow.
2.Maximum cooling airflow is achieved when switches SW2-3, SW2-2, SW2-1 and SW1-5 are set to ON, and SW4-3 is set to OFF.
3.All heating CFM's are when comfort/efficiency adjustment switch (SW1-4) is set to OFF
4.Ductwork must be sized for high-heating CFM within the operational range of ESP. Operation within the blank areas of the chart is not recommended because heat operation will be above
1.0 ESP.
5.All airflows on noted 21" (533 mm) casing size furnaces are 5% less on side return only installations.
6.Side returns for noted models, require two sides, or a side and bottom to allow sufficient airflow at the return of the furnace.
7.Airflows over 1800 CFM require bottom return, two-side return, or bottom and a side return or excessive watt draw may result. A minimum filter size of 20 x 25" (508 x 635 mm) is
required.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Table 11 – Air Delivery - CFM (With Filter) (Continued)
4
COOLING AND HEATING AIR DELIVERY - CFM (Bottom Return With Filter)
(SW1-5 and SW4-3 set to OFF, except as indicated. See notes 1 and 2)
SW2-2 SW2-1 0.1
OFF OFF 1825 1830
SW3-2 SW3-1
OFF ON 695 700
ON OFF 870 885
ON ON 1045 1060
OFF OFF 1310 1315
OFF ON 1470 1475
ON OFF 1825 1830
ON ON 2170 2180
2
2230 2225
SW3-2 SW3-1
OFF OFF 695 700
OFF ON 695 700
ON OFF 870 885
ON ON 870 885
OFF OFF 870 885
OFF ON 870 885
ON OFF 870
ON ON 870
3
1425 1430
SW2-2 SW2-1 0.1
OFF OFF 1765 1775
SW3-2 SW3-1
OFF ON 630
ON OFF 805 830
ON ON 1065 1075
OFF OFF 1240 1250
OFF ON 1410 1415
ON OFF 1765 1775
ON ON 2115 2115
2 2165 2185
SW3-2 SW3-1
OFF OFF 630
OFF ON 630
ON OFF 805 830
ON ON 1020 1040
OFF OFF 1020 1040
OFF ON 1020 1040
ON OFF 1020 1040
ON ON 1020 1040
3
1790 1800
External Static Pressure (ESP)
0.2 0.3 0.4 0.5
1830 1825 1825
880 880
1070 1070 1070
1315 1315 1310
1480 1480 1480
1830 1825 1825
2180 2175 2170
2235 2230 2195
880 880
880 880
880 880
880 880
885 880 880
885 880 880
1435 1435 1435
External Static Pressure (ESP)
0.2 0.3 0.4 0.5
1790 1805 1810
1080 1085
1265 1270 1270
1435 1445 1450
1790 1805 1810
2125 2140 2145
2200 2215 2225
1050
1050
1050
1050
1050
1815 1830 1835
22
0.6 0.7 0.8
1825 1815 1810 1805
Note 4
Note 4
1070 Note 4
1300 1290 1280
1475 1465 1460 1450
1825 1815 1810 1805
2150 2080 1995 1915
2165 2110 2020 1935
Note 4
Note 4
Note 4
Note 4
Note 4
Note 4
Note 4
Note 4
1425 1420 1410 1400
0.6 0.7 0.8
1820 1820 1820 1820
Note 4
Note 4
Note 4
Note 4
1455 1460 Note 4
1820 1820 1820 1820
2150 2145 2140 2080
2240 2250 2210 2120
Note 4
Note 4
Note 4
Note 4
Note 4
Note 4
Note 4
Note 4
1845 1850 1850 1855
0.9 1.0
1785
Note 4
1440
1785
1825
1845
1390
0.9 1.0
1820
1820
1985
2030
1855