Envision Peripherals IM1609 10, IM1609 08 Unit Operating Parameters, Unit Operating Limits

ENVISION CONSOLE INSTALLATION MANUAL

Unit Operating Parameters

Single Speed Models

Entering				Cooling
	Water Flow
		Suction	Discharge
Water Temp				09-18	09-18	Water Temp	Air Temp
	GPM/Ton
°F		Pressure	Pressure
				Superheat	Subcooling	Rise °F	Drop °F DB
		PSIG	PSIG
50	1.5	127 - 144	205 - 225	5 - 10	10 - 14	18 - 22	18 - 22
	3.0	120 - 140	185 - 205	7 - 15	5 - 10	8 - 10	18 - 22
70	1.5	139 - 154	280 - 300	8 - 11	8 -12	18 - 22	18 - 22
	3.0	137 - 152	250 - 270	9 - 12	7 - 11	8 - 10	18 - 22
90	1.5	143 - 158	360 - 380	8 - 11	9 - 13	18 - 22	16 - 20
	3.0	141 - 156	330 - 350	9 - 12	8 - 12	8 - 10	16 - 20

Entering				Heating
	Water Flow
		Suction	Discharge			Water
Water Temp				09-18	09-18		Air Temp
	GPM/Ton
		Pressure	Pressure			Temp Drop
°F
				Superheat	Subcooling		Rise °F DB
		PSIG	PSIG			°F
30	1.5	73 - 79	279 - 304	7 - 13	2 - 6	7 -10	18 - 24
	3.0	79 - 85	285 - 310	8 - 14	2 - 6	3 - 6	20 - 26
50	1.5	103 - 109	308 - 333	8 - 12	4 - 8	8 - 11	20 - 26
	3.0	110 - 116	315 - 340	9 - 13	4 - 8	4 - 7	22 - 28
70	1.5	140 - 146	330 - 365	10 - 14	7 - 11	11 - 14	26 - 32
	3.0	146 - 153	340 - 375	10 - 14	7 - 11	7 - 10	28 - 34
Note: Cooling performance based on entering air temperatures of 80º F DB, 67º F WB.
Heating performance based on entering air temperature of 70º F DB.

Unit Operating Limits

Operating Limits		Cooling			Heating
	(°F)		(°C)	(°F)		(°C)
Air Limits
Min. Ambient Air	45		7.2	45		7.2
Rated Ambient Air	80		26.7	70		21.1
Max. Ambient Air	100		37.8	85		29.4
Min. Entering Air	50		10.0	40		4.4
Rated Entering Air db/wb	80.6/66.2		27/19	68		20.0
Max. Entering Air db/wb	110/83		43/28.3	80		26.7
Water Limits
Min. Entering Water	30		-1.1	20		-6.7
Normal Entering Water	50-110		10-43.3	30-70		-1.1
Max. Entering Water	120		48.9	90		32.2
Notes:

Minimum/maximum limits are only for start-up conditions, and are meant for bringing the space up to occupancy temperature. Units are not designed to operate at the minimum/maximum conditions on a regular basis. The operating limits are dependant upon three primary factors: 1) water temperature, 2) return air temperature, and 3) ambient temperature. When any of the factors are at the minimum or maximum levels, the other two factors must be at the normal level for proper and reliable unit operation.

42