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A fan coil unit (FCU), also known as a Vertical Fan Coil Unit (VFCU), is a device consisting of a heat exchanger (coil) and a fan. FCUs are commonly used in HVAC systems of residential, commercial, and industrial buildings that use ducted split air conditioning or central plant cooling.
The original version, has 1 fan stage, 3 LP booster stages, 10 HPC stages, 2 HPT stages, and 5 LPT stages. This engine promised better fuel burn on the Airbus A320 than the competing CFM56-5A; however, initial reliability issues, coupled with insufficient thrust for the larger A321, prompted the development of the improved V2500-A5 variant.
Doing these three steps are super essential and is the key to keeping an HVAC system running for a long time. A customer should do these three steps every couple of months or when it is suspected problem with the HVAC system. [citation needed] Some signs that could lead to a potential problem is if the HVAC system does not provide air cool enough.
The main evaporator and blower system took up half of the trunk space (though this became less of a problem as trunks became larger in the post-war period). It was superseded by more efficient systems in the post-war years. It had no temperature thermostat or shut-off mechanism other than switching the blower off.
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The most notable W116 model was the high-performance, limited-production 450SEL 6.9, which was introduced in 1975. This model boasted the largest engine installed in a post-war Mercedes-Benz (and any non-American production automobile) up to that time, [ 7 ] and it also featured self-leveling hydropneumatic suspension .
The Mercedes-Benz 450SEL 6.9 (marketed in North America as simply the Mercedes-Benz 6.9) is the high-performance version of the W116 S-Class saloon. It was based on the extended-wheelbase version of the W116 S-Class platform, introduced in 1972, but equipped with an M100 V8 engine from their flagship Mercedes-Benz 600, uprated to 6.8 l, and featuring full hydropneumatic suspension, licensed ...