Bard WA421, WA482 Recommended Airflow, Maximum ESP of Operation Electric Heat only

TABLE 8

RECOMMENDED AIRFLOW

	Rated	Rated	Recommended
Model	CFM *	ESP *	Airflow Range
WA421	1400	.30	1600 - 1150
WA482	1550	.20	1750 - 1285
WA602	1700	.30	1950 - 1375

* Rated CFM and ESP on high speed tap.

TABLE 9

MAXIMUM ESP OF OPERATION

ELECTRIC HEAT ONLY

Model	WA421		WA482		WA602
	High	Low	High	Low	High	Low
KW	Speed	Speed	Speed	Speed	Speed	Speed
-A05	.50	.50	.50	.50	.50	.50
-A10	.50	.50	.50	.50	.50	.50
-A15	.50	.50	.50	.50	.50	.50
-A20	.50	.45	.50	.45	.50	.40
-B00	.50	.50	.50	.50	.50	.50
-B09	.50	.50	.50	.50	.50	.50
-B15	.50	.50	.50	.50	.50	.50
-B18	.50	.50	.50	.50	.50	.50
-C09	.50	.50	.50	.50	.50	.50
-C15	.50	.50	.50	.50	.50	.50

Values shown are for units equipped with standard 1 inch throwaway filter or 1 inch washable filter. Derate ESP by .15 for 2 inch pleated filters.

TABLE 10

PRESSURE TABLE

COOLING					Air Temperature Entering Outdoor Coil °F
		Return Air
	Model	Temperature	Pressure	75	80	85	90	95	100	105	110	115
		75 deg. DB	Low Side	68	71	74	76	78	80	81	83	84
		62 deg. WB	High Side	213	228	243	259	274	290	305	321	337
	WA421	80 deg. DB	Low Side	72	76	79	82	84	86	88	89	90
		67 deg. WB	High Side	218	234	249	265	281	297	313	330	346
		85 deg. DB	Low Side	78	82	85	88	90	92	94	96	97
		72 deg. WB	High Side	226	242	258	274	290	307	323	341	358
		75 deg. DB	Low Side	73	74	76	78	79	80	82	83	84
		62 deg. WB	High Side	204	217	232	248	265	284	304	325	348
	WA482	80 deg. DB	Low Side	78	79	81	82	84	86	87	89	90
		67 deg. WB	High Side	210	223	238	254	272	291	312	334	357
		85 deg. DB	Low Side	84	85	87	88	90	92	93	95	97
		72 deg. WB	High Side	217	231	247	264	282	302	323	345	369
		75 deg. DB	Low Side	71	72	74	75	76	77	78	78	79
		62 deg. WB	High Side	233	247	262	278	295	313	331	351	371
	WA602	80 deg. DB	Low Side	76	78	79	80	81	82	83	84	85
		67 deg. WB	High Side	237	253	269	285	303	321	340	390	381
		85 deg. DB	Low Side	84	85	85	86	87	88	89	90	91
		72 deg. WB	High Side	245	261	278	296	314	333	353	373	394

Low side pressure ± 2 PSIG

High side pressure ± 5 PSIG

Tables are based upon rated CFM (airflow) across the evaporator coil. If there is any doubt as to correct operating charge being in the system, the charge should be removed, system evacuated and recharged to serial plate instructions.

NOTE: Pressure table based on high speed condenser fan operation. If condensing pressures appear elevated check condenser fan wiring. See “Condenser Fan Operation” on Page 14.

Manual 2100-218

Page 18