Bryant 558D installation instructions Alternate Belt Drive Motor Airflow

Table 6 Ð 558D036 Air Delivery Ð Vertical Discharge Units (Alternate Motor)

										ALTERNATE BELT DRIVE MOTOR
AIRFLOW											External Static Pressure (in. wg)
(Cfm)	0.1						0.2		0.3		0.4					0.5			0.6			0.7			0.8
		Rpm	Watts			Rpm		Watts	Rpm	Watts	Rpm		Watts		Rpm		Watts	Rpm		Watts	Rpm		Watts	Rpm		Watts
900	581		119			673		179	736	219	805		249		865		288	911		338	957		388	988		428
1000	644		189			709		219	782	279	835		298		900		348	937		378	992		438	1039		487
1100	687		219			746		259	806	298	867		348		929		398	964		398	1013		487	1068		547
1200	733		259			785		318	843	348	903		408		960		467	994		497	1045		557	1090		637
1300	754		288			826		378	891	428	942		477		991		527	1047		597	1075		637	1122		696
1400	810		348			868		448	937	507	984		567		1032		617	1067		666	1110		726	1160		766
1500	841		418			911		527	985	607	1029		656		1073		716	1109		766	1150		816	1190		855
								ALTERNATE BELT DRIVE MOTOR
AIRFLOW								External Static Pressure (in. wg)
(Cfm)			0.9				1.0				1.1			1.2
		Rpm		Watts				Rpm	Watts	Rpm		Watts		Rpm			Watts
900		1039			448		1061		487	1083		527		1105		567
1000		1061			507		1086		547	1111		587		1136		627
1100		1090			577		1109		607	1127		637		1145		666
1200		1109			647		1156		676	1203		706		1250		736
1300		1152			716		1190		756	1228		796		1266		836
1400		1181			806		1237		845	1293		885		1349		925
1500		1225			895		1271		945	1317		995		1363		1044

NOTES:

1.Boldface indicates a ®eld-supplied drive is required. (See Note 7.)

2. indicates ®eld-supplied motor and drive are required.

3.indicates maximum usable watts of a factory-supplied motor.

4.Maximum usable watts input is 1000. Extensive motor and electrical testing on these units ensures that the full range of the motor can be utilized with con®dence. Using your fan motors up to the wattage ratings shown will not result in nuisance tripping or premature motor failure. Unit warranty will not be affected. For additional information on motor performance, refer to Table 4.

5.Values include losses for ®lters, unit casing, and wet coils.

6.Use of a ®eld-supplied motor may affect wire sizing. Contact your distributor to verify.

7.Alternate motor drive range: 760 to 1090 rpm. All other rpms require ®eld-supplied drive.

8.To convert watts to bhp:

bhp =

watts input x motor efficiency

746

Motor efficiency = .75

Table 7 Ð 558D048 Air Delivery Ð Vertical Discharge Units (Standard Motor)

				STANDARD DIRECT DRIVE MOTOR
AIRFLOW			Low Speed					High Speed
(Cfm)		208 v		230, 460, 575 v			208 v		230, 460, 575 v
	ESP		Watts	ESP	Watts	ESP		Watts	ESP	Watts
1200	0.93		458	0.94	506	0.94		572	0.99	632
1300	0.86		471	0.87	521	0.87		589	0.92	651
1400	0.78		503	0.79	556	0.79		616	0.87	681
1500	0.70		536	0.73	593	0.73		631	0.80	698
1600	0.61		557	0.64	616	0.66		654	0.76	723
1700	0.51		584	0.54	646	0.58		678	0.68	750
1800	0.40		610	0.44	674	0.51		698	0.63	772
1900	0.29		629	0.37	696	0.46		720	0.56	796
2000	0.25		651	0.30	720	0.39		744	0.50	823

LEGEND

ESP Ð External Static Pressure (in. wg)

NOTES:

1.Values include losses for ®lters, unit casing, and wet coils.

2.Extensive motor and electrical testing on these units ensures that the full range of the motor can be utilized with con®dence. Using your fan motors up to the wattage ratings shown will not result in nuisance tripping or premature motor failure. Unit warranty will not be affected. For additional information on motor performance, refer to Table 4.

3.Use of a ®eld-supplied motor may affect wire sizing. Contact your distributor to verify.

4.To convert watts to bhp:

bhp =

watts input x motor efficiency

746

Motor efficiency = .66

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