Armstrong World Industries 242, 243, 302, 123, 203, 182 HWC122 Performance Test Chassis Installed

SRM-HW/HWC 8/99

Service Reference Manual TROUBLESHOOTING

9-9

Performance

Performance Checkout

HW/HWC chassis come with a pre-charged chassis assembly. The chassis assembly is designed in a way that the unit may be run indepen- dently of the HWC unit. When the chassis is run on a floor or bench, the performance measurements will be affected due to the change in static pressures, recirculated air, excessive temperatures and equal ambient temperatures from indoor to outdoor.

Two sets of tables are provided in this section to address these issues. Tables 9-1 to 9-4 are to be used when the chassis is still installed in the complete unit. Tables 9-5 and 9-6 are to be used when the chassis is run independently outside of the unit.

Note: Pressures may vary +/– 10 psi. Temperatures may vary =/– 2-3°F.

Performance Tests (Chassis Installed in Unit)

TABLE 9-1		HWC122 Performance Test (Chassis Installed)
					Outdoor Air Temperature Entering Outdoor Coil
			85°			95°			105°			115°
Enter.	Total	Suction	Suction	Liquid	Suction	Suction	Liquid	Suction	Suction	Liquid	Suction	Suction	Liquid
	Air Vol.
DB/WB		Pressure	Temp.	Temp.	Pressure	Temp.	Temp.	Pressure	Temp.	Temp.	Pressure	Temp.	Temp.
	(CFM)
	400	81	49	87	82	49	97	84	50	107	85	51	117
75°/63°	450	83	54	87	84	50	97	86	51	107	87	52	117
	500	85	60	87	86	52	97	88	52	107	89	53	117
	400	87	63	87	88	53	97	89	53	107	91	54	117
80°/67°	450	88	68	88	90	58	97	91	54	107	93	55	117
	500	90	73	88	92	63	97	93	57	107	95	56	117
85°/71°	400	92	74	88	93	64	97	94	56	108	96	57	117
	450	94	79	88	95	71	97	96	62	108	98	58	117
	500	96	84	88	97	74	97	98	65	108	100	59	117
Based on a normally installed cooling chassis

TABLE 9-2		HWC182 Performance Test (Chassis Installed)
					Outdoor Air Temperature Entering Outdoor Coil
			85°			95°			105°			115°
Enter.	Total	Suction	Suction	Liquid	Suction	Suction	Liquid	Suction	Suction	Liquid	Suction	Suction	Liquid
	Air Vol.
DB/WB		Pressure	Temp.	Temp.	Pressure	Temp.	Temp.	Pressure	Temp.	Temp.	Pressure	Temp.	Temp.
	(CFM)
	550	80	49	96	81	48	106	84	50	114	86	51	123
75°/63°	600	82	54	96	83	50	106	86	51	114	88	52	123
	650	84	59	96	85	52	106	88	52	114	90	54	124
	550	86	62	98	88	53	106	90	54	115	92	55	124
80°/67°	600	87	67	98	89	58	107	91	54	116	94	56	125
	650	99	72	98	91	62	107	93	57	116	95	56	125
85°/71°	550	91	73	99	93	64	107	95	56	116	97	58	125
	600	93	78	99	95	70	108	97	63	117	99	59	126
	650	95	83	99	97	74	108	99	66	117	101	60	126

Based on a normally installed cooling chassis