19
Installation
Chillgard 5000
US
4.4.2 Routing and Placement
MSA recommends the use of at least two gas-monitoring points per chiller for sufficient detection
monitoring. Due to installation and application variations, each system must be analyzed individually.
Do a smoke test of the mechanical room to determine the flow pattern and allow for optimal placement
of the sample lines. Ventilation smoke tubes for this use are available from MSA (P/N 458480). For a
list of approved parts and how to order them, refer to Section 13, "Ordering Information".
Keep the total line length of a point, including the sample line and exhaust line, at less than 1200 ft
(366 m). Keep lines as short as possible to minimize the transport time of the device.
Typically, refrigerants collect near the floor. Install the sample points 12–18 in. (30–46 cm) above the
floor.
For installations where water condensation in the sample lines is likely, MSA recommends installing
a water trap filter such as a Parker P/N F504-01AHX67 or equivalent.
Transport Time
Line Length
(ft)
4pts 8pts 16pts
0 19s 19s 19s
50 19 s 19 s 19 s
100 19 s 19 s 19 s
150 19 s 19 s 19 s
200 19 s 19 s 19 s
250 19 s 19 s 19 s
300 1 m 35 s 2 m 51 s 5 m 23 s
350 1 m 35 s 2 m 51 s 5 m 23 s
400 2 m 51 s 5 m 23 s 10 m 27 s
450 2 m 51 s 5 m 23 s 10 m 27 s
500 2 m 51 s 5 m 23 s 10 m 27 s
*
Transport time is similar for all tubing configurations.
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