ATS CyberChiller Series 2.8.1Pressure/Temperature Settings, 2.8.2Saturated Refrigerant Pressure Tables, Dew, Temp, Point, Point, Bubble, Pressure, R-22Refrigerant, R-407CRefrigerant

CyberChiller Series Installation, Operation & Maintenance Manual

2.8Refrigerant Characteristics

2.8.1Pressure/Temperature Settings

The following chart is provided to assist with the normal settings of the system for R-22 and R407C refrigerant. Where applicable, minimum and maximum settings are given along with normal operating pres- sures.

Pressure/Temperature Settings For R-22 & R407C

	Normal Min.		Max.
Sub-cooling°F	10	5	20
Superheat°F	15	10	20
Condensing Temperature Air-Cooled°F	125	105	140
Condensing Temperature Water-Cooled°F	105	105	140
Condensing Temperature Glycol-Cooled°F	130	105	140
Suction Pressure (psig)	70	58	84
	Opens	Closes
Low Pressure Switch (psig)	10	32
High Pressure Switch (psig)	410	Manual Reset

2.8.2Saturated Refrigerant Pressure Tables

The following refrigerant vapor pressure tables are provided for reference.

R-22 Refrigerant		R-407C Refrigerant
Temp.	Pressure	Temp.		Pressure
(°F)	(psig)	(°F)		(psig)
20	43.2		Superheat
22	45.5
24	47.8	20		37.0
26	50.2	22		39.1
28	52.6	24		41.3
		26		43.6
30	55.1
		28		46.0
32	57.7
		30		48.4
34	60.4				Dew
36	63.1	32		50.9
38	65.9	34		53.5	Point
		36		56.2
40	68.7
					(Saturated
		38		58.9
42	71.7				Vapor)
		40		61.7
44	74.7
46	77.8	42		64.6
48	81.0	44		67.6
		46		70.7
50	84.2
		48		73.8
55	92.7
		50		77.1
60	102
65	111
		Sub-cooling
70	122
75	132	95		206
		100		222
80	144
		105		239
85	156				Bubble
		110		257
90	168
95	182	115		275	Point
		120		294
100	196				(Saturated
105	210	125		315	Liquid)
110	226	130		336
		135		358
115	242
		140		381
120	260
125	278
130	296
135	316
140	337

(©October, 2006) 2-14