40
CVHH-SVX001G-EN
vent line connected to the outdoors.
N
No
otte
e:: Make sure there are no crosses (a derate on
the rated flow capacity for this configuration
is published in
Engineering Bulletin:
RuptureGuard Selection Guide
[E/CTV-EB-
10]), elbows, tees, or any other obstructions
within the first 9 in. (22.86 cm) of valve
discharge. Refer to ASHRAE Standard 15,
national, state, and local codes for additional
requirements on piping rupture disk and
relief valve vent lines.
Figure 27.
External vent line and drip leg (not
provided)
Purge exhaust
Rupture disk
Flange
Inlet flange
Drain line
Outlet flange
Drain valve
IIm
mp
po
orrtta
an
ntt:: If a RuptureGuard
™
is to be installed, it
MUST be installed properly. Failure to
properly install the RuptureGuard
™
will
likely result in a start-up delays and
required rework and expenses that result
from a failure to properly install the
RuptureGuard
™
will NOT be paid by Trane.
Vent Line Sizing Reference
Table 13. “C” values used to determine rupture disk
vent line sizes (lb/min); for use with the
following figure
NTON
Evap.
Size
(EVSZ)
Cond.
Size
(CDSZ)
“C” Values for Unit Components
Total
“C”
Value
Evap. Cond. Econ.
Oil
Tank
900–1200
100M
100M
112.0
48.4
40.7
18.5
4.5
900–1200
100L
100L
123.2
54.5
45.8
18.5
4.5
900–1200
130M
130M
122.4
54.0
45.4
18.5
4.5
900–1200
160M
200M
134.1
60.5
50.7
18.5
4.5
900–1200
200L
220L
160.4
75.4
62.1
18.5
4.5
900–1200
220L
220L
168.6
83.6
62.1
18.5
4.5
1500–1700
200L
200L
156.8
75.4
57.1
19.8
4.5
1500–1700
220L
220L
169.9
83.6
62.1
19.8
4.5
900–1200
100M
10HM
127.0
48.4
55.7
18.5
4.5
900–1200
130M
13HM
138.2
54.0
61.3
18.5
4.5
900–1200
160M
20HM
150.2
60.5
66.8
18.5
4.5
1500–1700
200L
20HL
174.9
75.4
75.2
19.8
4.5
1500–1700
220L
22HL
191.4
83.6
83.6
19.8
4.5
Notes:
1
.
Rupture disk diameter is 3 in.
2
.
Use the total “C” value in the following figure to determine the
vent line pipe diameter.
3
.
If piping multiple rupture disks (multiple units) to a common
vent line, first determine the total “C” value for each unit, and
then; add all “C” values together and apply the result to the
following figure.
4
.
The CVHH unit is a Simplex chiller and has (1) refrigerant circuit
and (1) relief device.
Summary of Contents for CVHH CenTraVac
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