Bally Refrigerated Boxes BVC Generation C – Direct Drive Air-Cooled – Vertical Air - Manual (Page 36)

Fig. 2
Ensure the unit is placed in a level position (to ensure
proper drainage of liquid refrigerant and oil). The legs
should be securely anchored to the building structure,
sleeper or concrete pad. The weight of the condenser is not
enough to hold in place during a strong wind,
the
legs must be anchored.
REFRIGERANT PIPING
All refrigeration piping must be installed by a qualified
refrigeration mechanic. The importance of correct
refrigerant pipe sizing and layout cannot be over-
emphasized. Failure to observe proper refrigerant piping
practices can result in equipment failure which may not be
covered under warranty.
All air cooled condensers are supplied complete with
headers and refrigerant connections sized for connecting
Air cooled condensers are large, heavy mechanical equip-
ment and must be handled as such. A fully qualified and
properly equipped crew with necessary rigging should be
engaged to set the condenser into position.
Lifting brackets or holes have been provided at the
corners for attaching lifting slings. Spreader bars must be
used when lifting so that the lifting force must be applied
vertically. See Fig. 2.
Under no circumstances should
the coil headers or return bends be used in lifting or
moving the condenser.
to standard refrigeration tubing.These connections may not
be the same as the actual line sizes required for the field
installation. Refer to a recognized source (ASHRAE charts,
manufacturer’s engineering manuals etc.) for line sizing.
DISCHARGE LINES
The proper design of discharge lines involves following
objective:
(1) to minimize refrigerant pressure drop, since high
pressure losses increase the required compressor
horsepower per ton of refrigeration.
Discharge lines must be pitched away from the compressor
to ensure proper drainage of oil being carried in the line.
A discharge check-valve at the bottom of a vertical riser will
prevent oil (and liquid refrigerant) from draining back to the
compressor during the off-cycle. When the vertical lift
exceeds 30 feet (9 m), insert close-coupled traps in the
riser at 30 feet (9 m) intervals.
An alternate method of handling the oil problem would be
the addition of an oil separator see Figure 4 (b).
A reverse trap should be installed at the top of all vertical
risers. The top of the reverse trap should be the highest
point in the discharge line and should have an access
valve installed to allow the reclaimation of non-condensible
gas from the system.
Pulsation of the hot gas in the discharge line is an inherent
characteristic of systems utilizing reciprocating
compressors. The discharge line must be rigidly supported
along its entire length to prevent transmission of vibration
and movement of the line.
CONDENSATE LINES
The condensate line must be designed to allow free
drainage of refrigerant from the condenser coil to the
receiver. Refer to Fig. 5 for typical condensate line piping
when utilizing head pressure regulating valves.
INSTALLATION
- 36 -
LEG INSTALLATION INSTRUCTIONS
CENTRE LEG
WITH SUPPORT
CHANNEL
(RIGHT HAND SIDE SHOWN) USED ON
CONDENSERS LONGER THAN 177” 4500 mm)
Fig. 1
CORNER LEG
1) Assemble R.H. center leg L.H. center leg and 90” (or 45” on single
row) channel as shown.
Remove 2 bolts from bottom flange of unit side panels that match the
hole pattern on the top flanges of both legs. Attach center leg and
channel assembly using hardware provided at divider panel locations
required for applicable model as shown in dimensional data.
Replace bolts that were removed from side panels to secure leg
assembly to bottom flanges of side panels.
2) Assemble four corner legs to bottom flanges on unit side panels and
end panels using hardware provided, at matching mounting hole
patterns. All corner legs are the same.