Bard MV4000 Humidity control option, Stage Compressor Units No Economizer

Page 10

humidity control option

Note: This function is not available if controller is configured for heat pump.

The standard air conditioning system can be adapted to perform dehumidification control by addition of a simple humidity controller that closes-on-rise, and is connected to terminals H1 and H2 on the main controller board. Recommended Bard Part #8403-038 (H600A 1014). Both HVAC units must be equipped with electric heat for this sequence to work properly. See appropriate connection diagram - Figures 1 - 12 for this connection:

1.Temperature control always has priority over dehumidification. If there is any stage of cooling demand active, the dehumidification sequence is locked out.

2.If all stages of cooling are satisfied, and relative humidity is above the set point of humidity controller:

a.The green “Dehumid. Operation” light will come on, and the lag unit compressor and blower will operate until the set point of humidity controller is satisfied (or cancelled by a call for cooling).

b.If the space temperature drops to 67F, the electric heater of the lead unit will cycle to help maintain building temperature. It will cycle off at 69F.

c.If space temperature drops to 64F, the Stage 2 Heating light will come on and the lag unit compressor operating for dehumidification mode will cycle off until the building temperature rises above 65F from 1st stage heat and building load. The green “Dehumid. Operation” light stays on during this sequence, and when Stage 2 Heating light is Off, the compressor is On. The electric heater in lag unit is locked out in dehumidification mode.

Lag unit outputs G, Y1 and Y2 are all switched on during dehumidification sequence. This is true for both alternating and non-alternating controller configurations.

CAUTION

Humidity controller set point should be in 50-60% relative humidity area: Setting controller to lower settings will result in excessive operating time and operating costs for the electric reheat, and in extreme cases could cause evaporator (indoor) coil freeze-up if there are periods of light internal equipment (heat) loading.

COOLING OPERATING SEQUENCES FOR ALternatING LEAD/LAG/LEAD/LAG CONFIGURATION

1.1-Stage Compressor Units No Economizer

1st stage cooling set point is the setting (SP) input into the controller. Factory default is 77F (25C). On a call for cooling the blower of the lead unit will come on immediately (if not already on – See Blower Operation), and the Stage 1 LED will blink for 10-seconds before going solid, at which time the compressor will start.

2nd cooling set point is 4F (default setting, user selectable 2-6F) warmer than Stage 1. On a call for 2nd Stage cooling the blower of the lag unit is turned on (if not already on – See Blower Operation), and the Stage 2 LED will blink for 10-seconds before going solid, at which time the compressor will start.

3rd and 4th stages are functional outputs but there is nothing to be controlled.

2.2-Stage Compressor Units No Economizer

1st stage cooling set point is the setting (SP) input into the controller. Factory default is 77F (25C). On a call for cooling the blower of the lead unit will come on immediately (if not already on – See Blower Operation), and the Stage 1 LED will blink for 10-seconds before going solid, at which time the lead unit compressor will start in compressor Stage 1 partial capacity operation.

2nd cooling set point is 4F (default setting, user selectable 2-6F) warmer than Stage 1. On a call for 2nd Stage cooling the blower of the lag unit is turned on (if not already on – See Blower Operation), and the Stage 2 LED will blink for 10-seconds before going solid, at which time the lag unit compressor will start in compressor Stage 1 partial capacity operation.

3rd cooling set point is 2F (default setting, user selectable 2-3F) warmer than Stage 2. On a call for 3rd Stage cooling the Stage 3 LED comes on solid (no delay), and the lead unit compressor will switch to compressor Stage 2 full capacity operation.

4th cooling set point is 2F (default setting, user selectable 2-3F) warmer than Stage 3. On a call for 4th Stage cooling the Stage 4 LED comes on solid (no delay), and the lag unit compressor will switch to compressor Stage 2 full capacity operation.

Manual

2100-571A

Page

10 of 31

Page 9 Page 11
Image 10
Page 9 Page 11
Contents Installation Instructions & replacement parts list Contents American National Standards Institute For more information, contact these publishersAir Conditioning Contractors of America Bard Bard Manufacturing Company, IncMV4000 Series Master Controller Controller certificationsBard Manufacturing Company, Inc Bryan, OH Temperature sensor logic SPECIFICATIONS/FEATURES for mv4000-B ControllerTemperature sensors Mounting the controllerGen Run/Econ Shutdown Terminal Blocka Located in the MV4000 panel boxLocated on Main Controller Board Economizer Fail Terminal BlockController power-up LOW voltage field wiringController grounding Accelerate timer feature Staging delay periodsAdvance Swap lead/Lag unit feature Fire suppression circuitController Programmable Features and Default Settings General Programming OverviewHumidity control option Stage Compressor Units No EconomizerConfiguration Heating Sequence of OPERATIoN Air Conditioners with Electric HeatFor XP or Windows CB4000 Communication BoardFor Vista or Windows Log Out Button Connect to networkGenerator run / economizer shutdown feature Controller wiringSecurity Locking feature Backup dc power connectionHOOK-UP Diagram Selection Table Reference Shown AC Unit With Alarm Board & CB4000 Communication Board MIS-3063 MIS-3062 This page intentionally left blank MIS-3060 This page intentionally left blank Compressor run alarm Economizer failure alarmAlarm wiring ReFRIgerant pressure alarms 2nd stage cooling alarmEmergencY venTIlatioN sequence Manual 2100-571A Manual 2100-571A Programming instructions 27F/15C Lead SEXP-638 a Parts List

MV4000 specifications

The Bard MV4000 is a groundbreaking mobile video platform designed to revolutionize the way organizations manage and distribute video content. This versatile device is particularly notable for its robust features, advanced technologies, and user-friendly characteristics, making it an indispensable tool for various industries, including education, security, and entertainment.

One of the standout features of the Bard MV4000 is its high-definition video capture capabilities. The platform supports 4K resolution, ensuring that every detail is captured with stunning clarity. This makes it an ideal solution for applications where image quality is paramount, such as live events or surveillance operations. The MV4000 is equipped with multiple camera inputs, allowing users to connect various types of cameras, including PTZ (pan-tilt-zoom) cameras for versatile shooting options.

Another significant advantage of the Bard MV4000 is its advanced streaming technology. The device supports a wide range of streaming protocols, including RTMP and HLS, facilitating seamless content delivery across different platforms. This flexibility ensures that users can easily broadcast live events over the internet or integrate the device into existing workflows without significant technical hurdles.

The MV4000 also features an intuitive user interface, making it accessible to users of all skill levels. The touchscreen controls simplify the setup and operation of the device, allowing video producers to focus on content creation rather than technical complexities. Additionally, the platform's built-in editing tools enable users to perform real-time adjustments, enhancing the overall production quality without the need for extensive post-production work.

In terms of connectivity, the Bard MV4000 excels with its multiple options, including Wi-Fi, Ethernet, and cellular connectivity. This versatility allows users to remain connected in various environments, from remote locations to urban settings. The device further supports various storage options, ensuring that users can save and access their video content with ease.

Finally, the Bard MV4000 is designed with durability in mind. Its rugged casing and robust construction make it suited for field use, ensuring it can withstand the rigors of outdoor applications. With its combination of high-definition video capabilities, advanced streaming technologies, user-friendly interface, versatile connectivity options, and durability, the Bard MV4000 stands out as a premier mobile video solution for today’s dynamic multimedia landscape.
Top Page Image Contents