General Information; Operating Conditions; Connecting Pipework - BAC VCL Operating And Maintenance Instructions Manual

VCL
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GENERAL INFORMATION

Operating Conditions

BAC cooling equipment is designed for the operating conditions specified below, which must not be exceeded
during operation.
• Wind Load: For safe operation of unshielded equipment exposed to wind speeds above 120 km/h installed at a
height above 30 m from the ground, contact your local BAC-Balticare representative.
• Seismic Risk: For safe operation of equipment installed in moderate and high hazard area's contact your local
BAC-Balticare representative.
Standard electrical motors are suitable for an ambient temperature range from -25°C to +40°C.
• Design pressure: 23 bar (std.) or 28 bar (option) according to PED
• Refrigerant inlet temperature: max. 120°C
• Refrigerant outlet temperature: min. - 20°C
• Suitable refrigerants: R-717, Halocarbon Refrigerants, HFC`s.
Standard condenser coils are manufactured from black steel and hot dip galvanised after fabrication and may
contain certain contaminants, such as carbon, iron oxyde or welding particles. The interior condition of the coil,
including humid air must be considered, when using halocarbon (or HFC) refrigerants and sensitive system
components, such as electronic expansion devices or semi hermetic compressors. The installer must take the
necessary precautions on site to safeguard the operation of these components in conjunction with the condenser
coils.
Maximum spray pressure: 14 kPa (If pump(s) are installed by others, it is recommended to install a pressure gauge
at the inlet of the water distribution system.)
At ambient temperatures above 40°C ensure spray water pump remains running, even if condenser is idle. This
prevents unwanted discharge of refrigerant through safety valves (by others).
Stand-by pump arrangements for evaporative fluid coolers and condensers require alternating operation of
each pump at least twice per week to avoid stagnant water conditions and bacteriological growth.
PURGE REQUIREMENTS
The installer of BAC condensers must provide a proper system purging, which enables purging air from the coils
prior to operation.
Entrained air can obstruct free drainage of cooling medium and reduce thermal capacity. All connections (installed
by others) must be leak free and tested accordingly.
To verify absence of non condensables in the refrigeration system, follow the instructions in the BAC Application
Handbook – EU Edition (http://www.baltimoreaircoil.eu/sites/BAC/files/BAC_Application_Handbook_EU-
EDV.pdf), Section "Condenser Engineering Guidelines" on page 51".

Connecting Pipework

All piping external to BAC cooling equipment must be supported separately.
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2 General Information
2 General Information