The Marine Air Vector Turbo Unit with Mechanical Control VTM Dometic series completely revolutionized self contained boat marine air conditioning (cooling and heating) with patented innovations in marine air conditioning system design. The rust-free molded composite drain pan has three drains for the rapid removal of condensate water. The drain pan has a small footprint for installation flexibility. A vibration isolation mounting system results in significantly quieter, virtually vibration free performance. The enclosed blower motor eliminates overhang for reduced depth. The Turbo series was specifically engineered to harness and maximize the impressive performance of R-410A, a proven and environmentally safe refrigerant gas. The optional Turbo sound cover provides up to 50% further noise reduction. This compact, easy to install sound cover completely encases the compressor to provide a 3- to 5-dB reduction in noise.
Electro mechanical rotary-knob switch assemblies provide conventional control over basic air conditioning functions. Both 115V and 230V switches are available. The standard design is an aluminum plate covered with a modern black plastic overlay with text and graphical representations of the various functions. Many different configurations are available: Standard three knob assemblies provide function selection (OFF-FAN-RUN), fan speed control, and a room thermostat with 10 ft. (3 m) capillary tube. For chilled water systems, a special thermostat on the air handler allows automatic changeover between heating and cooling modes. A two-knob control for chilled water systems features function control (OFF-FAN-RUN) and fan speed control. It is used with a remote thermostat, or in situations where a thermostat is not needed, such as in an engine room or on a makeup air handling unit with a bypass valve. Single knob switch assemblies control fan speed (either variable or two-speed) and offer two operational modes: In the ON position, the fan will run continuously; in the AUTO position, the fan will cycle on and off with the compressor. A four-knob assembly is available for direct expansion systems, allowing control of an auxiliary electric heater. Functions are: system mode (OFF – FAN – RUN), heat mode (Reverse Cycle or Aux. Heat), thermostat, and fan speed.