Bare coils
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GCO
Application Benets for Contractors, Architects, Engineers and End Users
RECOMMENDATION FOR MATERIAL SELECTION Depending on the material characteristics and the aggressiveness of the ambient air, the right selection of the material combination for a heat exchanger has a strong bearing on the service life, hygiene and operating safety. Benefit from our long-term experience and request our brochure Guntner Info material combinations. In order to find the best solution for the material selection, we provide a large variety of material combinations and available piping and connection systems.
SPECIAL CONSTRUCTION Our experts are happy to provide advice for the specific requirements of heat exchangers on demand by the customer. The high flexibility of Guntner manufacturing plants enables the accomplishment of even the most challenging requirements.
HIGH PROTECTION AGAINST LEAKAGES Approved, patented Guntner floating coil system for fin types F N + K , Through the patented floating coil principle the coil can expand and contract without affecting the refrigerant carrying core tubes. This helps to prevent refrigerant losses due to tube fractures and prolongs the service life of the bare coil.
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Connection diagram Installation position / Connections
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Technical information: Dimensions / Application / Possible material combinations
Fin types A.D. = air direction A.D. = air direction Tube arrangement Diameter Tube Frame material Tube material Fin material
Coolant Convector fluid
H
staggered
/8 9.53 mm
3
G/S/C
A/E/C
HFC, Water, Brine, CO2
F
staggered
1 /2 12 mm
C Z V/W
G/S/C S V/W/G G/S/C
A/E/C A/E A/E/C/V/W A/E/C
HFC, Water, Brine, CO2 R717 NH3, R717, HFC, Water, Brine, CO2 HFC, CO2 NH3, R717, HFC, Water, Brine, CO2
N
in line
5 /8 15 mm
V/W
V/W/G
A/E/C/V/W
K
staggered
7 /8 22 mm
F/V/W
F/V/W/G
F/A/E/G
NH3, CO2
Legend A = Aluminum C = Copper E = Aluminum epoxy resin coated
F = Steel, hot-dip galvanized G = AlMg3 S = Sheet steel, Steel, hot-dip galvanized
V = Stainless steel 304 W = Stainless steel 316 Z = Galvanized steel tubes
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Dimensions
Standard: x = variable dimension (2 / 50 mm) customer-specific adaptation possible
What are the maximum dimensions?
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Check-list for inquiries
Please provide us with the following data to size your heat exchanger
Application Refrigerated goods Aggressive ambient air (salt, detergents, ammonia) No Yes, which type?
Parameter Air quantity max. pressure drop of air in coil cfm in H2O Air heater Air cooler Evaporator Condenser
Air inlet temperature / room temperature F Air inlet humidity / WB temperature Air outlet temperature / capacity 1. Brine / water inlet temperature 2. Brine / water outlet temperature 3. Brine / water quantity / Capacity Brine concentration Brine type Max. pressure drop Brine / Water Evaporation temperature Superheating temperature Condensing temperature + Subcooling Hot gas temperature Recirculated rate Refrigerant Max. Dimensions 1. Lmax max. installation length (unit inst.) 2. H installation height (unit installation) 3. T installation depth L for duct installation (length of frame) inch mm inch mm inch mm inch mm psi F F % F F %
H for duct installation (height of frame) inch mm Soldered connection Threaded connection Flanged connection Installation position / Connections horizontal vertical AD (air direction) to the right vertical AD (air direction) to the left
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Construction GCO
PRESSURE TEST Heat exchangers for water/brine operation will be tested with 250 psig. For all other heat exchangers the test pressure is: 250, 500 or 725 psig.
CONNECTIONS Soldered connection / welded flanges Thread Flange acc. to ASTM A182 / ANSI B16.5
ACCESSORIES AND SPECIAL CONSTRUCTION Droplet separator Drip tray Defrosting (electrical, hot gas) Cover and bottom sheet squared, or smooth cross braced with drain hole Painted casing Breather / drain vent. Variable fin pitch
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keep(s) your quality.
