Hydronic units

Description

Hydronic units for cold rooms are indirect cooling systems consisting of an air condensed glycol chiller plus an air cooler unit with glycol as secundary fluid, built-in a common control board with electronic regulation.

• Operating with propylene glycol.
• R134a low refrigerant charge.
• Control board and hydraulic group.
• Tropicalised design for ambient temperature up to 50 ºC.
• Electronic control with additional remote control.

Series:

• AHF-D series: Hydornic systems for process rooms with double-flow air cooler, from 2,1 to 13,5 kW, for cold room temperature of 10ºC.
• MHF-N series: Hydornic systems for small cold rooms with slim-type air cooler, from 0,2 to 3,4 kW, for cold room temperature of 0ºC.
• MHF-D series: Hydornic systems for conservation rooms with double-flow air cooler, from 1,6 to 8,1 kW, for cold room temperature of 0ºC.
• MHF-Q series: Hydornic systems for cold rooms with cubic-type, from 2,6 to 10,0 kW, for cold room temperature of 0ºC.

Refrigeration unit

• 230 V-I-50 Hz or 400 V-III-50 Hz power supply. Available in 60 Hz. Other voltages by request.
• Self-sopporting glycol chiller casing built in galvanized steel sheet and polyester paint coating.
• Hermetic reciprocating compressor insulated with acoustic jacket, discharge muffler, mounted on shock absorbers, with internal klixon.
• Condensing coil in L, with copper pipes and aluminium fins, tropicalised for ambient temperature up to 50 ºC.
• Low-speed condensing motor fans, with internal electronic protection, mounted on nozzles, dynamically balanced blades and external protection grille.
• Proportional control of condensing pressure (three-phase models).
• Stainless steel plate heat exchanger.
• R-134a cooling circuit, equipped with HP and LP switches, filter dryer and thermostatic expansion valve.
• Hydraulic group with glycol circulation pump, expansion tank, safety valve, strainer, air vent and filling valve.
• Electronic control board with electronic control for cold room set point temperature, glycol water temperature, defrost cycles, compressor protection and anti-ice protection.

Air cooler

• Air cooler with glycol water, self-supporting casing built in galvanized steel sheet and polyester paint coating.
• High performance cooling coil, built in copper pipes and aluminium fins.
• High-flow axial motor fans.
• Bottom cover with removable defrost drain pan in stainless steel.
• Air defrost for high temperature and electrical defrost for positive temperature.

R134a + glycol water

Hydronic systems use a solution of propylene glycol as a secondary refrigerant, and ecological R134a as refrigerant fluid in a compact circuit with very low refrigerant charge.

• Food-safe compatibility.
• Innocuous to the environment.
• In liquid state under pressure and ambient temperature.
• Thermophysical properties similar to water.
• Freezing temperature: -18 ºC.
• Biodegradable.
• Economical.

• Change to 400 V-III-50 Hz power supply.
• Proportional control of condensing pressure (single-phase models).
• Evaporator coil epoxy anti-corrosion treatment.
• Condenser coil polyurethane anti-corrosion treatment.
• Coil protection grille.
• Refrigerant R-290.