Trane AquaStream CGWN 205 Installation Operation & Maintenance page 32

Table 16 - Recommended liquid line diameters with pressure relief valve - CCUN
Unit size Unit efficiency model
Standard
205
High
Standard
206
High
Standard
207
High
208 Standard
209 Standard
210 Standard
211 Standard
Standard
212
Standard
Standard
213
Standard
Standard
214
Standard
Standard
215
Standard
Figure 17 - Installing pressure relief valve (205-211)
1 = Connection for pressure relief valve circuit 1
2 = Connection for pressure relief valve circuit 2
32
Installation
High pressure
The remote condenser must have a
service pressure equal to or higher
than the high service pressure (44.5
bar for CCUN 205-211 and 29.5 bar
for CCUN 212-215.)
Warning! CCUN 205-211 have a
high pressure sensor which is not
adjustable up to 44.5 bar. CCUN
212-215 have a high pressure
sensor which is not adjustable up to
29.5 bar.
Maximum system refrigerant
Circuit charge without pressure relief
valve (kg)
1 & 2 62
1 & 2 69
1 & 2 63
1 & 2 69
1 & 2 65
1 & 2 70
1 & 2 71
1 & 2 74
1 & 2 76
1 & 2 79
1 109
2 77
1 109
2 109
1 103
2 111
1 106
2 106
2
1
Pressure relief valve - CCUN
Above the maximum system
refrigerant charge, it is
recommended to install a pressure
relief valve. See figures below for
installation. Depending upon the
liquid line diameter selected in the
"Recommended liquid line
diameters" table, find the predicted
maximum liquid line length of
installation without pressure relief
valve installed. The recommended
pressure relief valve setting is 29 bar
for CCUN 205-211 and 21 bar for
CCUN 212-215 and shall be installed
on the low pressure side of the
refrigerant circuit.
Maximum length
Liquid line
without pressure relief
diameter
valve (m)
1"1/8 76
1"1/8 90
1"1/8 71
1"1/8 83
1"1/8 69
1"1/8 79
1"1/8 73
1"1/8 74
1"3/8 45
1"3/8 44
1"3/8 76
1"3/8 43
1"3/8 76
1"3/8 76
1"3/8 69
1"3/8 74
1"3/8 67
1"3/8 67
Figure 18 - Installing pressure relief valve (212-215)
2
1
1 = Connection for pressure relief valve circuit 1
2 = Connection for pressure relief valve circuit 2
Maximum length
Liquid line
without pressure relief
diameter
valve (m)
7/8" 120
7/8" 142
7/8" 113
7/8" 131
7/8" 108
7/8" 125
7/8" 115
7/8" 116
1"1/8 70
1"1/8 69
1" 5/8 54
1" 5/8 30
1" 5/8 54
1" 5/8 54
1" 5/8 49
1" 5/8 53
1" 5/8 48
1" 5/8 48
CG-SVX06D-E4