![background image](http://html.mh-extra.com/html/carrier/hfc-134a/hfc-134a_installation-instructions-manual_2562209020.webp)
2. Provide openings in water piping for required pressure gages and thermometers. For
thorough mixing and temperature stabilization, wells in the leaving water pipe should
extend inside pipe at least 2 in. (50 mm).
3. Install air vents at all high points in piping to remove air and prevent water hammer.
4. Install pipe hangers where needed. Make sure no weight or stress is placed on waterbox
nozzles or flanges.
5. Water flow direction must be as specified in
Figure 7
,
Figure 8
,
Figure 9
,
Figure 10
and
Figure 11
.
Note: On 2-pass machines, entering water is always the lower of the 2 nozzles. Leaving water
is always the upper nozzle for cooler or condenser.
6. Water flow switches must be of vapor-tight construction and must be installed on top of pipe
in a horizontal run and at least 5 pipe diameters from any bend.
7. Install waterbox vent and drain piping in accordance with individual job data. All
connections are 3/4-in. FPT.
8. Install waterbox drain plugs in the unused waterbox drains and vent openings.
9. Install optional pumpout system or pumpout system and storage tank.
Summary of Contents for HFC-134a
Page 40: ...Figure 1 Model Number Identification ...
Page 41: ...Figure 2 Typical 19FA Installation 1400 2200 Tons 4922 7735 kW ...
Page 42: ...Figure 3 Machine Rigging Guide 3 Indicates center of gravity ...
Page 44: ...Figure 5 Machine Footprint ...
Page 45: ...Figure 6 Machine Contact Surfaces with Anchor Bolts ...
Page 51: ...Figure 12 Water Piping Oil Cooler to Chilled Water Circuit Typical ...
Page 52: ...Figure 13 Pumpout Unit ...
Page 53: ...Figure 14 Typical 19FA Relief Valve Tree for Storage Vessel ...
Page 54: ...Figure 15 Compressor Terminal Arrangement 18 Lead Rear Inlet ...
Page 55: ...Figure 16 Compressor Terminal Arrangement 18 Lead Top Inlet ...
Page 56: ...Figure 17 Compressor Terminal Arrangement 18 Lead Side Inlet ...
Page 57: ...Figure 18 Oil Pump Wiring ...
Page 58: ...Figure 19 Oil Heater and Control Power Wiring ...
Page 59: ...Figure 20 Pumpout Unit Controls ...
Page 60: ...Figure 21 Pumpout Unit Wiring Schematic ...
Page 61: ...Figure 22 Carrier Comfort Network Communication Bus Wiring ...
Page 62: ...Figure 23 COMM1 CCN Communication Wiring For Multiple Chillers Typical ...
Page 63: ...Figure 24 Typical 19FA With Free Standing Starter ...
Page 65: ...Figure 26 19FA Insulation ...