Unit coolers
Industrial ceiling

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Applications and models

Ceiling unit coolers, best suited for installation in the ceiling of cold rooms and the cooling of all kind of products. Intersam dual discharge evaporators range includes four main different Series for high (IPIA), medium (IPIM), low (IPIB) and extremly low temperatures (IPIT).

General features

Coils

High performance finned coils, built in 1/2” grooved copper tube, smooth 5/8” tube and corrugated aluminium with 4,2, 6, 8 and 10mm. fin spacing. The frame is manufactured in aluminium sheet, protected by collars. They have a Venture type distribution system for the application of thermostatic expansion valves.

External structure

Manufactured in RAL-9018 colour polyester high resistance aluminium. The whole structure is compact and highly rigid to avoid vibrations. All pieces are easily dismantled for maintenance.

Fans

Helicoidal fans with high performance protection grids and 400V / 50Hz three phase motor fans diameters 400, 500, 630 and 800mm., with IP-54 protection grade, external rotor and low power consumption. Ball bearing are supplied with low temperature grease for -50ºC. All the motors are wired to the centralized waterproof junction box, according to IP-55 standards.

Defrosting heaters

Defrosting is carried out by 230V electric heaters, built in shielded stainless steel tube, with vulcanized ends avoiding shunts, inserted in the coil and tray and wired to the waterproof junction box.

All the models may be supplied with defrosting heaters.

Options

Coils

- Copper fins for corrosive environments
- Prelacquered aluminium fins
- Bronz Glow protection
- Heating coil incorporation
- Stainless steel tube
- Tinned copper tube
- Copper tube thickness = 0,63mm.

Defrosting

- Electrical defrost in coil and drip tray
- Hot gas in coil, with coil in drip tray
- Double insulated drip tray

Fans

- 230-400V / 50Hz and 60Hz triphase motors for 400, 500 and 630mm. diameters
- Fans with EC regulation
- High pressure fans

Options will only be ordered following consultations with the Intersam technical department.


Refrigerant capacity

The capacities of the unit coolers are tested in dry atmosphere (sensible heat) according to ENV-328.

The nominal capacities of the catalogue (sensible heat + latent heat) are refered to the tested capacities (SC2) multiplied by a coefficient (latent heat factor) to consider the increasing of capacity (latent heat) due the condensation of steam water on the unit cooler surface.

This factor depends on the cold room conditions, for high room temperatures is increasing and for low room temperatures is decreasing, as indicated in the table here below according ENV-328.

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