Home > BMS System BEMS (BMS) Controls systems overview Building Energy Management Systems (or BEMS) are computer-based systems that help to manage, control and monitor building technical services (HVAC, lighting etc.) and the energy consumption of devices used by the building. They provide the information and the tools that building managers need both to understand the energy usage of their buildings and to control and improve their buildings’ energy performance.Last Updated: October 27, 2010 The Department will continue to recognize previously-issued MEA and BSA product approvals, as per section 28-113.2.6 of the administrative code. Furthermore, previously-issued approvals must comply with all relevant Code sections, Rules, Bulletins and other regulations. MEA Resolutions (reports of accepted MEA products referenced by MEA Number valid as of July 1, 2008), can be obtained via the published MEA Index and the online MEA Index and MEA Report databases. The online MEA Index is a partial database of previously issued MEA Resolutions listed by Major Category.

A complete set of the published MEA Index through 2003, including listings by MEA Number, Manufacturer and Subject, may be obtained from the New York CityStore. 2008 * 2007 * 2006 * 2005 * 2004 * 2003 * 2002 * 2001 * 2000 * 1999 * 1998 * 1997 * 1996 * 1995 * 1994 * 1993 * 1992 * 1991 * 1990 * 1989 * 1988 * 1987 * 1986 * 1985 * 1984 * 1983 * 1982 * 1980 * 1976The Daikin VRV system is a multi-zone air conditioner with variable refrigerant flow control. It gives you the ability to maintain individual zone control in each room and floor of a commercial building. VRV provides a total solution for heating, cooling, ventilation, hot water production, air curtains and central control. VRV systems optimise seasonal performance with highly efficient outdoor, and indoor units, with heat recovery and inverter technology, smart energy management control, etc. Controlling each floor or room individually saves energy. This versatility makes VRV ideal for buildings with multiple tenants.

VRV systems provide fresh air at the right temperature, with the correct humidity level and at minimum sound level. Including Variable Refrigerant Temperature technology and continuous heating to prevent cold draft. VRV’s modular approach is very flexible for balancing heat loads in different parts of the building. VRV IV includes the VRV configurator for easy commissioning. VRV is the world’s first individual air conditioning system with variable refrigerant flow control. First marketed by Daikin in 1982, the VRV name is derived from technology that we call ‘Variable Refrigerant Volume’. Geothermal VRV uses ground energy as a renewable source to minimise CO2 emissions. It has excellent energy efficiency because the water and ground temperatures are relatively constant, unlike outdoor air temperatures. Daikin VRV heat recovery reuses heat extracted from cooling processes to provide inexpensive heat for fresh air ventilation, air curtains, hot water or for heating rooms.

Daikin gives you a single point of contact for an entire system. Specifiers get expert support and software tools, and we simplify commissioning and maintenance for installers.hvac blower motor lowes 4 side heat exchangertypes of hvac systems vav 14 posts, read 73,215 timesdanby window ac units Originally Posted by accorda Is this a NEW problem? Or has it always been like this? HVAC guy replaced the thermostat controls... 25,521 posts, read 52,492,518 timesit won't turn off unless I lower the temperature manually You are describing TWO DIFFERENT THINGS! If the unit truly NEVER shuts off that is one kind of problem. If the unit shuts off at a setting say 65 when you want the temp in the home to be 71 that is a whole other problem.

The "never ever shuts off" problem might be a problem with the basic wiring and / or controller inside the unit. The second scenario is very likely a faulty thermostat, possible bad delay / temp variation sensor adjustment or user error... All thermostats have a way to adjust the delay / temp variation -- typically the installer reads the recommended setting from the furnance / heat pump manufacturer and tests out the system. In practice this often means for a set point of say 71 degrees the unit runs until maybe 71.5 / 72 and then won't kick back on until the temp falls to say 68.5/69 -- if you are "fiddling" with the temp setting you may be defeating the design intent of the delay. BTW when toutside temps are too low for the heat pump to maintain indoor temps the unit ought to have backup resistance heat that kicks in and the "run time" ought not be continuous! The situations you describe should have be explained by any qualified HVAC technicians. Originally Posted by chet everett

I'm pretty much leaving the temperature at a consistent setting: 71 - I figure the place should be comfortable at that temp. The only reason I turn it down is after HOURS of hearing it blow and the place is at a good temperature. If the place was freezing, I would guess that the heat pump is still working. But the temperature is comfortable. Also, when I leave for work, I set the temperature for around 62 - no point in having the heat running if no one's there to enjoy it I would've set up the thermostat to raise and lower temperatures for when I'm at work but since the thing isn't working anyway, I haven't bothered. I'm renting an apartment in a fairly large building. Initially, when I used the heat, I got very cold air. The heat pump did turn on and off, like a regular unit, but just wasn't warming up the place. I complained to my propety manager and the HVAC guy they hired replaced my very old fashioned thermostat with a newer digital one and I started getting warm air.