Guide Specifications Uniflair LE High Capacity Chilled Water Units THIS GUIDE SPECIFICATION IS WRITTEN IN ACCORDANCE WITH THE CONSTRUCTION SPECIFICATIONS INSTITUTE (CSI) MASTER FORMAT. THIS SECTION MUST BE CAREFULLY REVIEWED AND EDITED BY THE ARCHITECT OR THE ENGINEER TO MEET THE REQUIREMENTS OF THE PROJECT. COORDINATE THIS SECTION WITH OTHER SPECIFICATIONS SECTIONS IN THE PRODUCT MANUAL AND WITH THE DRAWINGS. WHERE REFERENCE IS MADE THROUGHOUT THIS SECTION TO "PROVIDE", "INSTALL", "SUBMIT", ETC., IT SHALL MEAN THAT THE CONTRACTOR, SUBCONTRACTOR, OR CONTRACTOR OF LOWER TIER SHALL "PROVIDE", INSTALL", "SUBMIT",ETC., UNLESS OTHERWISE INDICATED. THIS SECTION IS WRITTEN TO INCLUDE THE 2004 MASTER FORMAT AND THE 1995 MASTER FORMAT VERSIONS. WHERE APPLICABLE THESE ITEMS ARE BRACKETED AND, IN EACH CASE, UNLESS OTHERWISE INDICATED, THE FIRST CHOICE APPLIES TO THE 2004 MASTER FORMAT AND THE SECOND CHOICE APPLIES TO THE 1995 MASTER FORMAT. PART 1 - GENERAL A. The environmental control system shall be designed specifically for precision temperature and humidity control applications. It shall automatically monitor and control cooling, heating, humidifying and dehumidifying, as well as filtering functions for the conditioned space. The system shall be built to the highest quality engineering and manufacturing standards and shall be floor mounted and configured for downflow applications. The draw through air pattern shall provide uniform air distribution over the entire face of the cooling coil. The system shall be described in the following specification as manufactured by Schneider Electric Model: Total cooling capacity: kw (MBH) Reheat capacity: kw (MBH) Sensible cooling capacity: kw (MBH) Return air temperature: ºC (ºF) DB Return air temperature: ºC (ºF) WB Humidity: % RH Air quantity: L/s (CFM) External Static Pressure Pa (in. WC) Humidifier capacity: kg/hr (lbs/hr) Electrical supply: V, ph, 60 Hz Submittal are provided with the proposal and shall include the following: capacity data, electrical data, physical data, and Uniflair LE HDCV Guide Specifications Page 1
PART 2 - PRODUCTS A. The structure of the unit shall be characterized by a metal framework and internal parts made from hot zinc plated sheet steel. B. These profiles are connected together by structural rivets designed to ensure sturdy assembly and which are capable of withstanding severe transportation and handling conditions. The units are also equipped with internal panels for shutting off the compartments affected by airflow; these internal panels are made from hot zinc plated sheet metal and ensure the following: 1. Reduction in the noise transmitted through the paneling 2. Air tightness even without external panels so that the units can also operate with the doors open during servicing 3. The possibility of inspecting the internal elements without interfering with the operation of the unit and, more importantly, with the unit in operation C. External Panels 1. The external panels shall be 1-mm thick, coated on the external side with epoxy-polyester paint, which guarantees long-term durability. 2. The front panels are attached to the framework by means of rapid coupling fasteners. 3. The standard external panels are double-walled, lined with fiberglass heat-insulating and soundproof material made of melamin covered by a protective film 20-mm deep with a density of 10 kg/m 3 (.000361 lbs/ in. 3 ). Melamin is an exceptional high-quality product featuring a high fire resistance (class B1 according to DIN 4102, BS 476 part 7, VO according to UL94, ASTM E84, class M1 according to NFP92-502). A. Shall be available as MERV 8 (standard), MERV 11 High-Efficiency Bag Filter (optional), or MERV 13 (optional). B. Box type air filters are made from self-extinguishing, synthetic fiber cellular material. The frame containing the filter material is made of metal. The pleated arrangement of the filters extends the surface area ensuring a high filtering efficiency and low pressure drops. The filters are front accessible, mounted inside the equipment, and mounted upstream from the coil. C. Shall be pleated 101-mm (4-in.) deep. A. Electronically Commutated (EC) Fans 1. Shall be plug/type, single inlet, and are dynamically balanced. The drive package is direct drive, electronically commutated (EC), and variable speed. The fans shall be located to draw air over the coil to ensure even air distribution and maximum coil performance. a. HDCV4500: The triple fan motors shall be 4 hp each and able to generate a nominal 30 000 CMH (17,600 CFM) at 50.0 Pa (0.20 in. WC) external static pressure. b. HDCV5000: The quadruple fan motors shall be 4 hp each and able to generate a nominal 40 000 CMH (23,540 CFM) at 50.0 Pa (0.20 in. WC) external static pressure. Page 2 Uniflair LE HDCV Guide Specifications
A. Discharge Temperature 1. A proportional and integral regulation on the discharge temperature of the cooling unit. 2. Operates by managing the regulation of the on-board three-way valve. The regulation logic is based on a proportional band that is not the tolerance band but a tuning band. The combination of the sets of (1) Integral Time, (2) Proportional Time, and (3) Dead Band ensures that the air temperature is maintained within tolerance. B. Moisture Control 1. During the dehumidification phase, a dedicated control function is activated. 2. In order to maximize the dehumidification capacity, the valve shall open at the maximum position, which shall be adjustable. 3. Minimizes the humidification and dehumidification processes and maximizes energy efficiency. A. The microprocessor controller shall utilize proportional/integral/derivative (PID) logic as a precision control method, allowing for custom tuning of control variables to achieve desired system response. 1. Shall manage unit operation 2. The controls shall be composed of the following components. a. Microprocessor control board housed inside the electrical cabinet. b. Seven-inch LCD touch screen display (color) externally mounted and viewed from the front of the unit. 3. The microprocessor control board shall contain the settings and programs of all the stored operating parameters which can be used, viewed, and set on the user display interface (touch screen display). 4. The user interface (7-in. LCD touch screen display) shall be externally mounted, password protected, and menu driven. 5. The user interface (7-in. LCD touch screen display) shall allow modification of adjustable parameters. B. Control System Functions 1. Temperature and humidity control based on setpoints programmed on the display interface. 2. Alarm signaling local or via remote interface. 3. Recording of all alarms/events and holding a minimum of 100 of the most recent events. 4. Programmable automatic restart after power is restored. 5. Remote unit On/Off. 6. Ability to communicate with a supervision system, via the RS485 serial board, LON FTT10, by TCP/IP, TREND, and BACNET. PCOWEB is standard. 7. Alarm signals contacts configured on the display interface. 8. Calculating operating hours and start-up cycles of major components. 9. Manages local network with the possibility of programming up to 10 units. 10. Stand-by unit sequencing available for one or two units. 11. Manual Override function which allow manual control of the main components without excluding possible remote control. 12. Possibility of setting a dual setpoint for temperature (in both cooling and heating) and humidity (both when dehumidifying and humidifying), which can be modified remotely using BMS. 13. Automatic floor pressurization system (AFPS) shall be configurable. Uniflair LE HDCV Guide Specifications Page 3
C. User Interface (LCD Touch Screen Display) 1. The user interface shall consist of the following: a. Seven-inch LCD touch screen display to move between screens and change parameters. b. Network Management Card 2. The microprocessor board is connected to the user interface (display) by a mini-hdmi cable. D. Measurement Selection 1. Imperial Measurement Selection: Shall display options for conversion of the following parameters: a. Celsius to Fahrenheit b. Bar to PSI c. Pascal to inches H 2 O E. Program Identification 1. Program Identification: Shall display the firmware configuration of the system. a. Firmware configurations of the system b. Firmware revision number c. Firmware revision date d. Product family F. User Interface (Touch Screen Display) Menu 1. Overview Screen: The user interface normally displays a screen with essential information on the system state. a. Displays room temperature and the percentage of humidity (if the probe is installed). b. Displays the information regarding unit status. c. Displays active alarms. d. Flashing icon indicates mode of operation. 2. Home Screen: Used to navigate to other screens. 3. Alarms Screen: Used to display active alarms. 4. About Screens: Used to display software version, bios, boot, and unit serial number. 5. On/Standby Screen: Used to put the system into operation or standby mode. 6. Set Points Screen: Used to adjust the setpoint values 7. Configuration Screen: Used to configure (cooling unit is pre-set in the factory: any changes will require a pass code). a. The unit parameters b. Display (Imperial or Metric) c. Factory system defaults d. Network connectivity 8. Logs Screen: Used to display the event log and export log data. Page 4 Uniflair LE HDCV Guide Specifications
G. Setpoints 1. Temperature and humidity setpoints shall be pre-set at the factory so the control functions correctly, maintaining standard conditions in the room. This screen shall display the following: a. Return Air Setpoint b. Supply Air Setpoint c. Return Air Temperature Sensitivity d. Supply Air Temperature Sensitivity e. Humidification Setpoint, Relative Humidity f. Humid. Proportional Band g. Dehumidification Setpoint h. Dehumidification Proportional Band i. Temperature Control Mode j. Supply Air High Temperature Alarm Enable k. Supply Air Temperature Compensation l. Second Return Air Setpoint m. Second Supply Air Setpoint 2. Sleep Mode: Shall allow a standby unit to activate and take control of the room conditions. The activation from "Sleep Mode" shall be programmed according to desired environmental conditions. This "Sleep Mode" shall be used in a "Cooling Assist Mode" in conjunction with grouping to allow a standby unit in the group to activate when the following is not met: a. Cooling Setpoint b. Fan Cycle c. Fan Cycle Time d. Dehumidification Setpoint e. Humidification Setpoint 3. Run Hour Meter: Shall enable setting the maintenance intervals for the components of the unit, establishing a threshold for operation hours. When a component reaches the limit, the microprocessor shall signal the maintenance request on the user interface (touch screen display). 4. Alarm Relay Settings: Shall enable a status change of the alarm signal contact type (N.C. or N.O) for Alarm "A" and "B". 5. LAN (Grouping) Settings: Uniflair LE microprocessor shall enable through the user interface (touch screen display) the automatic management of a local network (LAN) connected to more than one (1) unit, (up to maximum of ten (10)), of which some are in primary operation and other units are in standby mode, (up to maximum of two (2) units can be in standby mode. H. Unit Settings 1. Sensor Offsets a. Return Air Temperature Sensor Offset: 9.9 9.9ºC ( 17.8 17.8ºF) b. Supply Air Temperature Sensor Offset: 9.9 9.9ºC ( 17.8 17.8ºF) c. Return Air Relative Humidity Sensor Offset: 9.9 20 RH% d. Circuit Entering Chilled Water Temperature Sensor Offset: 9.9 9.9ºC ( 17.8 17.8ºF) Uniflair LE HDCV Guide Specifications Page 5
2. Digital Inputs a. Digital Input(s) 2, 4, 5, 6 b. Remote On/Off on input contact c. Unit off on water detection d. CW valve closed on water detection e. Alarm Signaling: Generates an alarm when the input state changes. f. Emergency Working: Sets up an input signal from an outside component, such as a UPS, to trigger the units to run only certain components as defined below. 3. Fan Settings a. Fan Speed: Sets fan speed b. Fan Off Delay: Sets delay for turning off fan c. Fan Speed Control by CW Valve: Enable/Disable d. Fan Control Type with CW Valve Speed Control: Together/Sequential e. Min. Fan Speed When Controlled by CW Valve Position: 40 100% f. Max. Fan Speed When Controlled by CW Valve Position: 40 100% g. Fan Speed Modulation with CW Valve Position Proportional Band:0.5 9.9ºC (0.9 17.8ºF) 4. Automatic Floor Pressurization System (AFPS) a. Fan: Controlled by AFPS: Enables the fans to be controlled by an AFPS. b. Fan: AFPS on Unit: Enables the fans on the AFPS. c. AFPS Setpoint: 0.0 100.0 Pa. d. AFPS Low Air Pressure Threshold: 0.0 625 Pa. e. AFPS Max. Fan Speed: 40 100% f. AFPS Min. Fan Speed CW: 40 100% g. Fan AFPS Control Type: 1. Standard: Uses standard proportional-integral-derivative controller (PID) control settings. 2. Advanced: Uses a wider range of PID control. h. Fan AFPS Dead Band: 0.0 100 Pa. i. AFPS Proportional Band: 0.0 999.8 Pa. 5. Damper Settings a. Motorized Damper: Enable/Disable operation of the damper b. Motorized Damper Opening Time: Set the damper opening time within a range of 20 300 seconds. During this period, the start of the fan and the air flow alarm are delayed. c. Motorized Damper Output Contact Normal State: Select the contact state (Normally Open/Closed) for the damper. 6. Heating and Humidification Settings a. Dehumidification Control: Enable/Disable control of dehumidification. b. Fan Speed Dehumidification: Set desired fan speed during dehumidification. c. Chiller Set Point Dehumidification: Enables digital output (DO4) to close during dehumidification in order to trigger the chiller to lower the water temperature. Page 6 Uniflair LE HDCV Guide Specifications
7. LAN (Grouping) Settings a. LAN Address: Displays the LAN address for the unit. b. Number LAN Units: Specifies the number of cooling units in the group. A minimum of 1 and maximum of 2 standby units are possible. c. Automatically Switch Over to Standby Unit: Enables unit rotation within the group based on time and/or alarm conditions. d. Number of Standby Units: Specifies the number (1, 2) of standby units. e. Sensor Values Used: Select if Local Values (per individual unit) or Mean Values of sensor readings are used to control the environment. f. Delta Temperature to Switch to Local Control: Setpoint for the temperature difference (0 9.9ºC (0 17.8ºF)) between local and group mean values at which local sensor readings will be used as primary. g. Unit Rotation Time: Sets the time (0 999 hours) at which cooling operations are rotated to another unit in the group. If 0 hours is selected, the test mode is activated, which rotates the standby unit every two minutes. h. Rotate to Standby Unit Only on Alarm: Enable/Disable rotation of cooling operations from the unit to a standby unit only when a specified alarm is triggered. i. Exclude from Rotation: Selects which units to Include/Exclude from rotation. j. Switch Over on Power Loss: Enable/Disable for switching over to the standby unit in the event of a power loss to an active unit. k. Number of Days Between Rotation: Selects number of days between rotation of units in a group. l. Hour of Rotation: Selects the hour of the day (0 23) at which the rotation occurs. m. Minute of Rotation: Selects the minute (0 60) of the hour at which the rotation occurs. n. Rotation Weekday: Selects the day (Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday) on which the rotation occurs. This option is only used in Number of Days Between Rotation is set to 7. 8. User Interface (Display) Settings a. Language Selection 1. Language selection 2. Date and time b. System Settings 1. Alarm volume 2. Button volume: Enable/Disable audible button function 3. Brightness: Controls the visibility of the display interface. 4. Enable backlight Time Out: Enable/Disable backlight time out settings. Time out range is 1 60 minutes. 5. Intensity: Select the visibility of the display interface during Backlight Timeout Setup. c. Security Settings 1. New user accounts are created on this screen and existing accounts can be modified. 2. Auto Log Off: Automatically signs current user out of the system after the specified amount of time. Time out range is 1 60 minutes. Uniflair LE HDCV Guide Specifications Page 7
9. Network Settings I. Alarms a. The Uniflair LE display interface shall be configured through the main menu by selecting Configuration and the Network screen is used to set network information for the network management card (NMC). 1. TCP/IPv4 enables and configures IPv4 if applicable. 2. TCP/IPv6 enables and configures IPv6 if applicable. 1. Event Log: The event log shall keep a record of all alarms and events. Each event log contains the following: a. Time/Date Stamp b. Operating conditions at the occurrence c. The controller displays run time, in hours, for major components (Filters, fans, and Condensate Pump). 2. Description of 35 Alarm Events: All possible alarm messages shall be displayed on the display interface. a. High/Low Temperature Threshold Exceeded b. Return Air Sensor Error Detected c. Supply Air Temperature Threshold Exceeded d. Supply Air Sensor Error Detected e. High/Low Airflow f. Air Filter Clogged g. Water Detected Fault h. High/Low Humidity Threshold Exceeded i. Humidity Sensor Error Detected j. Humidifier k. Electric Heater Over Temperature l. Wrong Password m. No Chilled Water Flow Alarm n. Chilled Water High Temperature Threshold Alarm o. Entering/Leaving Chilled Water Temperature Sensor Alarm p. Chilled Water High Temperature for Dehum Alarm q. Digital 2/4/6 Input r. Air Filter Run Hours Violation s. Humidifier Run Hours Violation t. EEPROM Error Detected u. Unit Run Hours Violation v. Smoke/Fire Detected w. Standby Mode Run Hours Exceeded x. Primary Power Source Error y. Primary/Secondary Power Source Unavailable z. Input Power Frequency Not Detected aa. AFPS Low Air Pressure Threshold Exceeded bb. AFPS Expansion Board Error Detected Page 8 Uniflair LE HDCV Guide Specifications
cc. AFPS Air Pressure Sensor Error Detected dd. Unexpected Number of Units in LAN ee. Dehumidification Mode Run Hours Exceeded A. Schneider Electric Uniflair LE HDCV Chilled Water Cooling Units shall use the availability of chilled water to control room conditions. The microprocessor shall control the modulating action of the 2- or 3-way chilled water valve to give precise temperature control. 1. The actuator shall have the ability to be manual overridden. 2. The two- or three-way valves shall have a bypass port on the valve has an orifice to maintain a constant pressure drop through the entire valve stroke to minimize pressure differentials between flow to the coil and through the bypass port. The chilled water valve shall be designed for water pressure of 2413 kpa (350 psi). The chilled water valve size shall be 2 in. A. The chilled water coil shall be designed with a large surface area in order to have an elevated SHR and a low air velocity through the coil. This prevents condensation carryover and reduces thermal pressure in the unit; therefore providing a more efficient heat exchange during the cooling and dehumidification processes. B. The evaporator coil shall be made from copper tubes mechanically expanded on aluminum fins, complete with a hydrophilic coating to reduce the surface tension between the water and the metal fin surface promoting sheeting of the condensation and avoiding the risk of condensation carryover. C. The coil shall be pressure tested to 2413 kpa (350 psi). D. Bleed valves shall be incorporated into the high points of the chilled water coil to facilitate air removal from the system. E. Designed with a minimum of m 2 ( ft 2 ) face area, rows deep. The coil shall be controlled by a 3-way/2-way modulating control valve. The coil shall have a maximum face velocity of m/s ( ft per minute) at CMH ( CFM). The water circuit shall be designed to distribute water into the entire coil face area. The coil shall be supplied with ºC ( ºF) entering water temperature with a ºC ( ºF) temperature rise. The coil shall require l/s ( GPM) of chilled water and the pressure drop shall not exceed kpa ( PSI). A. Dual Power Connection 1. Dual Power with Automatic Transfer Switch (ATS) shall automatically change from the A power source to the B power source upon failure of the A power source. 2. Dual Power without Automatic Transfer Switch (ATS) shall provide a manual change from the A power source to the B power source upon failure of the A power source. Uniflair LE HDCV Guide Specifications Page 9
B. Ultracapacitor 1. The Ultracapacitor shall be a lead-free, uninterruptible power supply to maintain control of the unit during a brief power outage. 2. Shall ensure the microprocessor remains active in the event of a loss of supply power for up to two minutes. 3. Shall provide a quick restart once the supply power is restored. 4. Shall recharge in 10 minutes once supply power is restored. C. Humidification 1. Steam generating humidifier shall be able to modulate capacity. 2. Steam generating humidifier shall be self-contained, steam-generating type, factory piped and wired, with disposable cylinder and automatic solid-state control circuit. 3. The humidifier controller shall communicate directly to the microprocessor and provide complete status and control at the display interface (touch screen display). 4. Humidifier canisters shall be disposable. D. Electric Heat 1. Shall consist of aluminum-finned heating elements, complete with manual reset over temperature thermostat to cut off the power supply to the heater and activate an alarm in the event of overheating. 2. The electric heat is shall be divided into three stages to allow for reduced electrical consumption. These stages result in excellent temperature regulation according to the needs of the room. 3. The finned heater elements shall be high-efficiency in order to maintain a lower power density on the surfaces, therefore limiting overheating of the heater elements and increasing their durability. Low surface temperature of the heating elements limits the effects of air ionization. 4. The electric heat has two functions: a. Heating the air to bring it up to the room setpoint. b. Reheating during the dehumidification phase in order to bring the temperature of the air to the room setpoint. The installed heating capacity is capable of maintaining the dry bulb temperature of the room during operation in dehumidification mode. E. Condensate Pump with Dual Float 1. Shall have a high-temperature condensate pump available for all applications. 2. Rated pump capacity is 1158 LPH (306 GPH) at 14.5 m (48 ft). Maximum lift is 18.2 m (60 ft). Integral dual float switch, pump motor assembly, and one gallon reservoir. The secondary float shall send a signal to the local alarm and shut down the unit upon a high-water condition. The pump shall be rated for 230 V or 400 V with a 9.5 mm (3/8 in.) compression fitting for the discharge connection. The maximum inlet water temperature shall be 100ºC (212ºF). 3. Shall be factory installed and powered by the unit. 4. Shall be available for applications which include a humidifier and have a capacity of 1158 LPH (306 GPH) at 14.6 m (48 ft.) with a maximum lift of 18.2 m (60 ft.). F. Active Floor Pressurization System (AFPS) 1. Shall provide automatic airflow to maintain a nominal pressure (from 20 to 80 Pa) underneath the raised access floor by managing fan speed. 2. AFPS shall consists of the following: a. Precision air conditioning units featuring modulating fan control (by means of an inverter or continuous current fans). b. Microprocessor regulation system with dedicated regulation software. Page 10 Uniflair LE HDCV Guide Specifications
c. Pressure transducer that can be installed underneath the raised access floor and is able to monitor the static pressure. d. Pressure sensor with anti-fouling and filtering system of the moving components. e. An assembly system for the pressure transducer ensuring reliable readings not influenced by dynamic effects. f. A communication and management system of the LAN parameters integrated in the microprocessor control of the perimeter units. G. Water Detection Options (Tape or Spot) 1. Tape Water Leak Detection Sensor: Shall include a control module to be installed inside the electrical panel and an external water sensor to be field installed. The maximum wiring distance is 500 m (1640 ft). The water detector sensors can be configured to stop the unit from running upon activating a water detection alarm. 2. Spot Water Detection Sensor: Shall include a control module to be installed inside the electrical panel and an external water sensor to be field installed. The maximum wiring distance is 500 m (1640 ft). The water detector sensors can be configured to stop the unit from running upon activating a water detection alarm. H. Smoke Detector / Firestat Factory Installed 1. Smoke/Firestat Option a. Shall have a Smoke and Fire Sensor comprising a control module to be installed inside the electrical panel and an external sensor. The smoke/fire stat shuts the unit down and provides a visual and audible alarm at the user interface (LCD touch screen display). 2. Remote Fire and Smoke Relay a. Shall provide a 24-V relay for external connection of the smoke or fire sensor. The fire stat shuts the unit down and provides a visual and audible alarm at the user interface (LCD touch screen display). I. Communication Options 1. TCP/IP serial adapter: This field-installed serial adapter card shall plug directly into the microprocessor and allow communication between the microprocessor and the customer network or supervision system via a single Ethernet connection in BACNet IP (pcoweb), SNMP, Modbus IP, and TCP/IP simultaneously. 2. RS485 serial adapter: Field-installed serial adapter card that shall plug directly into the microprocessor to allow communication via an RS485 connection between the microprocessor and the supervision system of the customer using modus RTU or Johnson Controls Metasys protocol. 3. LON serial adapter: Field-installed serial adapter card that shall plug directly into the microprocessor to allow communication between the microprocessor and the LON supervision system of the customer. 4. RS232 serial adapter: This is a field installed serial adapter card that shall plug directly into the microprocessor to allow communication between the microprocessor and a supervision system modem via an RS232 connection. J. Floor Stands 1. Floor Stands shall be fabricated from steel offered in fixed heights: 76 mm (3 in.) or 356 mm (14 in.). Uniflair LE HDCV Guide Specifications Page 11
K. Motorized Dampers a. The motorized damper shall be 152 mm (6 in.) in height, and consist of dampers, a 24-V damper drive motor, and the 152-mm (6-in.) plenum. L. Top Mounted Return Plenum 1. Top Return Air Plenum shall be 305-mm (12-in.) high. The external panels shall be 1-mm (0.039-in.) thick and are coated on the external side with RAL 9003 epoxy-polyester paint for long-term durability. The external panels shall be double walled and lined internally with fiberglass heatinsulating material 15-mm (0.59-in.) thick, 20 kg/m 3 (0.00072 lb/in. 3 ) of density. The plenum shall be assembled with screws. 2. Top Mounted Return Plenums a. Filters shall be available as MERV 11 or MERV 13. b. Air intake plenum shall be 500-mm (20-in.) high and installed between the top of the unit and a false ceiling or to the air delivery ducting. The external panels shall be 1-mm (0.039-in.) thick and are coated on the external side with RAL 9003 epoxy-polyester paint for long-term durability. The external panels shall be double walled and lined internally with fiberglass heat-insulating material 15-mm (0.59-in.) thick, 20 kg/m 3 (0.00072 lb/in. 3 ) of density. c. As an option to maximize the efficiency of the unit, a plenum shall be available with integrated bag filters that minimize pressure drops. This feature shall provide lower fan power consumption. d. The filters shall be mounted outside the equipment, upstream from the coil Page 12 Uniflair LE HDCV Guide Specifications
PART 3 - EXECUTION A. General 1. End user shall install cooling units in accordance with the manufacturer unpacking and installation instructions and guidelines. Install units plumb and level and securely attached in locations indicated. Maintain manufacturers recommended service clearances. B. Electrical 1. End user shall install and connect electrical devices furnished by manufacturer that are field installed per installation instructions and wiring diagrams supplied with the equipment. Ensure the electrical schematic of the system is submitted to electrical contractor for reference. C. Piping Connections 1. Equipment mechanical connections shall be installed per installation documentation provided by the manufacturer. Ensure the mechanical piping schematic of the system is submitted to the mechanical contractor for reference. All equipment piping and connections shall meet local code requirements as well as field leak-checking procedures. A. End user shall start-up cooling units per guidance provided with manufacturer operation and maintenance documentation. Test controls and operation of the system to demonstrate compliance with the site requirements and specifications. Uniflair LE HDCV Guide Specifications Page 13