Carrier 19XRV - Check Chiller Tightness; Refrigerant Tracer

56
Table 10 — Bolt Torque Requirements, Foot Pounds
Check Chiller Tightness — Figure 29 outlines the
proper sequence and procedures for leak testing.
The 19XRV chillers are shipped with the refrigerant
contained in the condenser shell and the oil charge in the
compressor. The cooler is shipped with a 15 psig (103 kPa)
refrigerant charge. Units may be ordered with the refrigerant
shipped separately, along with a 15 psig (103 kPa) nitrogen-
holding charge in each vessel.
To determine if there are any leaks, the chiller should be
charged with refrigerant. Use an electronic leak detector to
check all flanges and solder joints after the chiller is pressur-
ized. If any leaks are detected, follow the leak test procedure.
If the chiller is spring isolated, keep all springs blocked in
both directions to prevent possible piping stress and damage
during the transfer of refrigerant from vessel to vessel during
the leak test process, or any time refrigerant is being
transferred. Adjust the springs when the refrigerant is in operat-
ing condition and the water circuits are full.
Refrigerant Tracer — Carrier recommends the use of an
environmentally acceptable refrigerant tracer for leak testing
with an electronic detector or halide torch.
Ultrasonic leak detectors can also be used if the chiller is
under pressure.
BOLT SIZE
(in.)
SAE 2, A307 GR A
HEX HEAD
NO MARKS
LOW CARBON STEEL
SAE 5, SA449
SOCKET HEAD OR HEX
WITH 3 RADIAL LINES
MEDIUM CARBON STEEL
SAE 8, SA354 GR BD
HEX HEAD
WITH 6 RADIAL LINES
MEDIUM CARBON STEEL
Minimum Maximum Minimum Maximum Minimum Maximum
1
/
4
46 69913
5
/
16
8 11 13 18 20 28
3
/
8
13 19 22 31 32 46
7
/
16
21 30 35 50 53 75
1
/
2
32 45 53 75 80115
9
/
16
46 65 75 110 115 165
5
/
8
65 95 105 150 160 225
3
/
4
105 150 175 250 260 370
7
/
8
140 200 265 380 415 590
1 210 300 410 580 625 893
1
1
/
8
330 475 545 7809851,410
1
1
/
4
460 660 770 1,100 1,3801,960
1
3
/
8
620 885 1,020 1,460 1,840 2,630
1
1
/
2
740 1060 1,220 1,750 2,200 3,150
1
5
/
8
1010 1450 1,670 2,390 3,020 4,310
1
3
/
4
1320 1890 2,180 3,110 3,930 5,610
1
7
/
8
1630 2340 2,930 4,190 5,2807,550
2 1900 2720 3,150 4,500 5,670 8,100
2
1
/
4
2180 3120 4,550 6,500 8,200 11,710
2
1
/
2
3070 4380 5,000 7,140 11,350 16,210
2
3
/
4
5120 7320 8,460 12,090 15,710 22,440
3 6620 9460 11,040 15,770 19,900 28,440
Do not use air or oxygen as a means of pressurizing
the chiller. Mixtures of HFC-134a and air can undergo
combustion.