NH3 COOMERCIAL CEILING UNIT COOLERS
Applications and models
Industrial NH3 ceiling evaporators are placed in storage and refrigeration chambers of all kinds. The range consists of 4 main series for high (IPHA), medium (IPHM), low (IPHB) and very low temperatures (IPHT).
Industrial ceiling evaporators features
Its high performance evaporator coils are built in AISI-316 stainless steel tube with TIG ORBITAL welding and corrugated aluminum fins with 4.2 spacings; 6; 8 and 10mm. On the other hand, the frame, which is made of aluminum sheet, is provided with protection collars and has a Venturi type production system for the application of thermostatic expansion valves. The manifold and connection sleeve are made of stainless steel.
Regarding its external structure, the manufacture is made of aluminum painted in high resistance RAL-9018 polyester color. Thanks to the fact that the entire structure is compact and highly rigid, vibrations are avoided. It should be noted that all parts are removable, which facilitates maintenance.
The units come standard with helical fans with high-performance protection grids and are equipped with 400, 540, 630 and 800mm diameter motors, 400V / 50Hz three-phase, with IP-54 protection degree, with external rotor and low consumption. The bearings are provided with a special grease for low temperatures down to -50ºC. All motors can be connected to a general watertight box, according to IP-55 regulations.
Finally, defrosting is carried out with 230V electric heaters built in armored stainless steel tube. Thanks to its vulcanized ends, derivations are avoided. These resistors and are introduced inside the battery and the tray and are connected to a watertight junction box.
Models in this range can be supplied with defrost heaters.
In order to configure the equipment to obtain its maximum performance, there are different options to take into account when making the request. These options allow, for example, to modify the fins, change the type of coolant, incorporate heat batteries, etc.
Regarding defrosting, you can choose to reverse cycle or defrost by hot gas, or by water , etc.
These and other possible modifications to the fans can be consulted in more detail in the downloadable brochure on this page. span >
In the case of wanting to include one or more options to the equipment, these must be made upon request and under the prior study of the Intersam. technical department
The powers of the forced draft evaporators are tested in a dry atmosphere according to the ENV-328 standard. The nominal powers indicated in this catalog correspond to the test powers (SC2) multiplied by a coefficient (latent heat factor), in order to include the increase in capacity caused by the condensation of water vapor on the surface of the evaporator. This factor varies with chamber conditions: it increases for high interior temperatures and decreases for low interior temperatures.