SKY-COM HI-CAP SERIES. Precise Environmental Control SKY-COM 15 & 20 TON Series. Suited for Telecommunications, Laboratories and Computer Rooms

Transcription

1 SKY-COM HI-CAP SERIES Precise Environmental Control SKY-COM 15 & 20 TON Series Suited for Telecommunications, Laboratories and Computer Rooms

2 GENERAL MECHANICAL SPECIFICATIONS AIRFLOW CONFIGURATION Units are available in a variety of airflow configurations to suit a wide variety of applications. Basic airflow arrangement may be either upflow or downflow. Downflow models are designed for free air return through the top of the unit, with either ducted or free discharge through the bottom of the unit. Upflow models may be free return via the standard front return air grille, or through the bottom return air access. Alternatively, the return air may be ducted into the rear of the unit. The upflow unit discharge can be ducted from the top of the unit, or optional plenums may be ordered for free discharge into the conditioned space. FRAME AND CABINET The structural frame of the unit is constructed of heavy gauge welded steel tube and formed steel sections. The frame is powder coated after assembly for maximum corrosion protection. All external panels are removable for total service access. The electrical compartment and compressor/piping access panels may be removed for service and monitoring without interrupting unit operation. Panels are retained with quick-opening captive fasteners. The steel panels include 1 inch thick, 1-1/2 pound insulation to ensure quiet operation. All exterior panels are powder coated to provide maximum durability and appearance. FAN AND MOTOR The high capacity fan assembly features two forward curved, double width, double inlet centrifugal blowers with selfaligning and lifetime lubricated ball bearings. The fans are selected to provide system airflow at low RPM, enhancing quiet operation. The fan assembly is employed in a drawthrough design to ensure an even airflow pattern across the coil and filter sections. Motors are NEMA T-frame designs, provided with manual reset overloads mounted in the high voltage control compartment. The motor is mounted on a heavy duty adjustable slide base. Variable pitch drive pulleys allow field adjustment of the system airflow capacity. EVAPORATOR COIL FILTERS All units are provided with deep pleated, 4 inch thick, 30 % efficiency filters (efficiency rating as per ASHRAE Std ). Filters can be quickly and easily changed on all models. Filter access is from the top or both sides on downflow models, and from the right hand side on upflow models. Higher filter efficiencies may be substituted as an option. ELECTRICAL PANEL The user interface for the microprocessor control system is flush mounted on the front of the unit. Access to all control components is through this hinged vertical front panel. The high voltage section is protected by a self-latching inner panel, allowing access to the low voltage circuits without risk to operating personnel. The high voltage section contains all contactors, transformers, overload devices, and terminal connections. Independent overcurrent protection is provided for all internal branch circuits. REFRIGERATION CIRCUITS Dual independent refrigeration circuits include high efficiency 'Scroll' compressors. Scroll compressors provide unmatched efficiency, durability, and reliability. The compressors are mounted on vibration isolators to further enhance their low operating sound levels. Each compressor is protected by a auto-reset internal overload, and external high and low pressure switches. The compressor compartment may be accessed without interrupting system operation. Liquid line sight glasses/moisture indicators are provided for visual inspection of adequate system refrigerant charge, or if moisture has contaminated the system. A high capacity refrigerant filter-drier is installed in each circuit to ensure long term system reliability. Externally equalized thermal expansion valves are installed on both evaporator coil circuits. The valves feature a balanced port design to ensure optimum refrigerant flow modulation through a wide cooling load range. The A-frame direct expansion refrigerant coil features two completely interwoven circuits to ensure that maximum coil surface is active under all load conditions. The coil design features enhanced fin and tube surfaces for maximum heat transfer and efficiency. The large face area result in low air velocity with minimum turbulence. The state-of-the-art coil design results in a consistently high sensible heat ratio, under all operating conditions, which is most desired for applications involving cooling of electronic equipment. The entire coil assembly sits in a corrosion free stainless steel drain pan. The drain outlet connection is conveniently accessible, through the front access panel, for inspection and cleaning. 2

3 SYSTEMS ELECTRIC REHEAT The two-stage electric reheat elements are of an open wire design with low thermal mass for immediate response to system demand. The reheat has sufficient capacity to maintain dry bulb temperatures during the dehumidification cycle. The low watt density grid spans a significant percentage of the air path area, resulting in minimal temperature stratification through the unit. The electric coil wires are supported by ceramic insulating bushings in a rigid steel frame. Overheat protection is provided by a fast acting thermal switch. STEAM HUMIDIFIER An electric steam generating humidifier, with proportional output, injects hygienic vapor directly into the air stream. The humidifier features a disposable cylinder, electronic controls, an auto-flush cycle, and self-diagnostics. Water borne impurities are removed at the electrodes and deposited in the removable cylinder where they are periodically flushed out through the automatic drain sequence. Solid mineral scale sinks to the bottom of the cylinder, which is easily removed and replaced. The control unit provides an indication to advise when cylinder replacement is required. AIR-COOLED SYSTEMS Condenser Outdoor remote condensers feature multiple direct-drive propeller fans with one variable speed fan for low ambient head pressure control. Condensers are selected to provide the required heat rejection for the indoor system. The condenser casing is constructed from heavy gauge galvanized steel. Cabinet is sectioned with individual fan chambers. Coils are constructed of aluminum fins mechanically bonded to copper tubes. Fan motors are individually wired to a weather resistant control panel with weather resistant harnesses. Separate fusing is provided for each motor. The standard head pressure control system features a dual input electronic speed controller which senses the head pressure of both compressor circuits and varies the speed of one fan to maintain consistent condensing pressure. The other fan motors are cycled by pressure actuated switches. This system allows for operation to ambient temperatures as low as 0 F. WATER-COOLED SYSTEMS Condenser High efficiency shell and tube counterflow condensers are solidly mounted within the unit to provide the required heat rejection. Condensers are constructed of enhanced copper inner tubes within a steel outer shell. Pressure controlled water regulating valves are provided to maintain consistent condensing pressures at various water temperatures and flow rates. Three-way regulating valves may be ordered to allow constant water flow through the unit and tower pump circuit. GLYCOL-COOLED SYSTEMS Condenser High efficiency shell and tube counterflow condensers are solidly mounted within the unit to provide the required heat rejection. Condensers are constructed of enhanced copper inner tubes within a steel outer shell. Pressure controlled glycol regulating valves are provided to maintain consistent condensing pressures at various fluid temperatures and flow rates. These three-way regulating valves allow constant glycol flow through the unit and dry-cooler, to prevent dead-heading of the pump circuit. Glycol Dry-cooler Outdoor glycol dry-coolers feature multiple direct-drive propeller fans. The dry-cooler casing is constructed from heavy gauge galvanized steel. The cabinet is sectioned with individual fan chambers. Coils are constructed of aluminum fins mechanically bonded to copper tubes. Fan motors are individually wired to a weather resistant control panel with weather resistant harnesses. Separate fusing is provided for each motor. Dry-cooler capacity is controlled by fan cycling. CHILLED WATER SYSTEMS A - Frame Chilled Water Coil The multi-circuited chilled water coil is designed for maximum fluid heat transfer, at low water pressure drop. The entire coil surface is active under all cooling conditions, resulting in maximum dehumidification capacity. The entire coil assembly sits in a corrosion free stainless steel drain pan. Chilled Water Control Valve The fully modulating valve is throttled in response to the cooling ramp output signal from the microprocessor control system. Cooling output is proportional to setpoint deviation. The valve features a direct coupled actuator with no external linkages to adjust. The valve configuration may be either 3- way (standard) or 2-way, as required by the circulating water loop arrangement. 3

4 SYSTEM OPTIONS & ACCESSORIES SYSTEM OPTIONS AIR-COOLED SYSTEMS Refrigerant Head Pressure Control The outdoor air-cooled condenser may be outfitted with a liquid flooding system to maintain consistent condensing pressures under extreme low ambient conditions. The system includes heated and insulated receivers, check valves, and three-way head pressure control valves. This package allows system startup and operation at ambient temperatures to -30F. WATER/GLYCOL-COOLED SYSTEMS Hot Gas Reheat The heat reclaim coil is suspended below the A-frame evaporator. Hot discharge gas is routed through the reclaim coil to provide the first stage of reheat. Water-cooled units include an additional supplemental electric coil, employed to ensure sufficient reheat capacity to offset the compressor capacity during dehumidification. The hot gas reheat circuit includes a one row reclaim coil and a three-way solenoid operated valve. (This option not available on upflow units) Free-cooling Option An auxiliary chilled water coil is located upstream of the DX evaporator coil and piped in series with the refrigerant condensers. Depending on the entering fluid temperature this coil can provide partial or full cooling capacity, equal to the mechanical refrigeration system output. The microprocessor control system monitors the entering fluid temperature versus the room temperature to determine sufficient differential for free-cooling. A motorized three-way valve diverts fluid flow to the auxiliary coil. In order to allow full fluid flow through the unit at all times, three-way regulating valves are provided on the refrigerant condensers. The Deluxe Microprocessor Control must be ordered with this option. High Pressure Water Circuit The standard 150 psig condenser water circuit rating may be increased with the option of two-way, 230 psig or 350 psig rated water regulating valves. The coaxial condenser is rated for maximum working pressure of 400 psig on the fluid side. ACCESSORIES Unit Mounted Disconnect Switch A panel mounted non-fused disconnect is installed in the line voltage section of the electrical panel. This rotary action selector handle is mounted through the external front electrical access panel. The switch mechanism prevents opening of the panel unless the selector is in the 'OFF' position. (A hidden interlock bypass is provided to allow access by qualified personnel.) Hot Gas Bypass Bypass regulators are provided on both compressor circuits. Hot gas from the compressor discharge is diverted to the evaporator coil inlet, to maintain evaporator pressure at a preset minimum. The resulting reduction in cooling capacity allows extended compressor operation at minimal loads. Hydronic Reheat Hot water or steam reheat coils are factory installed and piped in all downflow models (upflow models - coils are mounted in discharge plenum; shipped loose). Control is by a modulating output signal from the microprocessor, to a motorized two-way valve. The reheat coil capacity is selected with sufficient output to maintain space temperatures during the dehumidification process. Upflow Discharge Plenum Discharge plenums are available in standard heights of 20", 24", and 36". Plenums are fully insulated with front mounted, double deflection discharge grilles. High Efficiency Filters The standard 30% efficient filters may be upgraded to 4 inch thick 60-65% or 80-85% efficient filters. Condensate Pump A high temperature condensate pump is factory mounted in the unit (Upflow models only - Downflow models; pump ships loose for field mounting under the floor). Condensate pump is complete with high capacity sump, factory wired motor, and automatic control. Water Detectors Single point water detectors provide indication of fluid leakage from the unit or associated piping. The detectors alert the microprocessor of the presence of water, which signals a visual and audible alarm. Multiple detectors may be connected in parallel to the alarm inputs. Floorstand Floorstands are adjustable + 2 inches. The floorstand allows installation and connection of the unit independent of the raised floor structure. 4

5 CONTROLS STANDARD MICROPROCESSOR CONTROLS The standard electronic control provides for the complete management of precision air-conditioners. The control is flush mounted in the unit, with a front LCD display and five programming keys for operator interface. The control system allows selection and programming of temperature and humidity setpoints, alarm parameters, and operating configuration. Multi-level passwords are required to make changes to the system setup and configuration parameters. CONTROL FEATURES Control Type: The user shall be able to select the type of control regulation that the microprocessor will use. Selection will be either proportional or proportional plus integral (P+I). If P+I is selected, the user shall be able to set the integration time constant. Compressor Short-Cycle Control: The control system includes time constants for compressor minimum on-time and minimum off-time. Compressor Rotation: Compressor run times are automatically equalized to maximize operating life. Sequential Load Activation: During start-up the microprocessor sequences operational loads to minimize inrush current. Auto Restart: The system will automatically restart after a power interruption. Time delay on restart is adjustable. Data Collection: The microprocessor shall maintain accumulative operating hours of all rotating components (fan motor and compressor motors). In the event of an alarm condition the alarm code, hour, minute and date are recorded, up to a maximum of 300 signals. Data logs are protected by a battery back-up in the event of power failure. ALARM FUNCTIONS The control system monitors unit operation and activates an audible and visual alarm upon occurrence of the following conditions: High Temperature Low Temperature High Humidity Low Humidity Humidifier Fault High Head Pressure (C1 or C2) Low Suction Pressure (C1 or C2) Heater Overload (Electric Reheat only) Loss of Airflow Change Filters Loss of Cooling Operating Hours exceeded Water under floor (opt) Operational alarms, that are not safety related, can be programmed for a time delay of 0 to 250 seconds to prevent nuisance alarm trips. COMMUNICATIONS Two sets of output contacts for monitoring of alarm conditions are provided. Master alarm contact shall be activated by any condition defined as "serious alarm" by the user. The secondary contact is activated by non-safety related alarms. Serial connection to generic supervisory systems is available through optional external gateway devices. Up to sixteen peripheral devices may be connected through each gateway, depending on the communication protocol (i.e. Modbus TM, BACnet TM ). Sensor Calibration: Temperature and humidity sensors are capable of being calibrated, using the front monitor panel controls, to achieve readings consistent with other temperature and humidity sensors in the room. DISPLAY PARAMETERS The front monitor panel allows visual monitoring of room temperatures and humidity levels, adjustment and display of each control setpoint, displays active functions (cooling, heating, dehumidification), and indicates any active alarms. ACTIVE DISPLAY FUNCTIONS Temperature Setpoint - 60 F to 85 F Temperature Differential - +/-1 to +/-10 F Humidity Setpoint - 40% to 60% RH Humidity Differential - +/-1% to +/-10% RH High Temperature Alarm - 60 F to 95 F Low Temperature Alarm - 50 F to 85 F High Humidity Alarm - 40% to 80% RH Low Humidity Alarm - 20% to 60% RH 5

6 CONTROLS DELUXE MICROPROCESSOR CONTROL SYSTEM The optional electronic control system offers enhanced features for management of precision air-conditioners. The control is flush mounted in the unit, with a backlit LCD display and fifteen programming and menu short-cut keys for operator interface. An optional large LCD display allows graphical presentation of acquired variables. An optional interface board is available for direct connection to a serial printer. The control system allows selection and programming of temperature and humidity setpoints, alarm parameters, and operating configuration. Multi-level passwords are required to make changes to the system setup and configuration parameters. CONTROL FEATURES Control Type: The user shall be able to select the type of control regulation that the microprocessor will use. Selection will be either proportional or proportional plus integral (P+I). If P+I is selected, the user shall be able to set the integration time constant. Compressor Short-Cycle Control: The control system includes time constants for compressor minimum on-time and minimum off-time. Compressor Rotation: Compressor run times are automatically equalized to maximize operating life. Sequential Load Activation: During start-up the microprocessor sequences operational loads to minimize inrush current. Auto Restart: The system will automatically restart after a power interruption. Time delay on restart is adjustable. Manual Control: The user may manually operate the output devices connected to the control system. All safety interlocks and protective functions remain enabled. Free-Cooling Mode: User may select from two energy saving sequences; free-cool only, or free-cooling with compressor supplement. When conditions are not favorable for free-cooling, the compressor stages operate normally. Data Collection: The microprocessor shall maintain accumulative operating hours of all rotating components (fan motor and compressor motors). In the event of an alarm condition the alarm code, hour, minute and date are recorded, up to a maximum of 300 signals. Data logs are protected by a battery back-up in the event of power failure. Sensor Calibration: Temperature and humidity sensors are capable of being calibrated, using the front monitor panel controls, to achieve readings consistent with other temperature and humidity sensors in the room. DISPLAY PARAMETERS The front monitor panel allows visual monitoring of room temperatures and humidity levels, adjustment and display of each control setpoint, displays active functions (cooling, heating, dehumidification), and indicates any active alarms. ACTIVE REGULATION VARIABLES Temperature Setpoint - 60 F to 85 F Temperature Differential - +/-1 to +/-10 F Humidity Setpoint - 40% to 60% RH Humidity Differential - +/-1% to +/-10% RH High Temperature Alarm - 60 F to 95 F Low Temperature Alarm - 50 F to 85 F High Humidity Alarm - 40% to 80% RH Low Humidity Alarm - 20% to 60% RH ALARM FUNCTIONS The control system monitors unit operation and activates an audible and visual alarm upon occurrence of the following conditions: High Temperature Low Temperature High Humidity Low Humidity Humidifier Fault High Head Pressure (C1 or C2) Low Suction Pressure (C1 or C2) Heater Overload (Electric Reheat only) Loss of Airflow Fan Motor Overload Change Filters Loss of Cooling Manual Control Operating Hours exceeded Condensate Drain Pan Overflow Water under floor (opt) Smoke/Fire detected (opt) Loss of water flow (opt) Generic Alarm (user-defined) Operational alarms, that are not safety related, can be programmed for a time delay of 0 to 250 seconds to prevent nuisance alarm trips. 6

7 COMMUNICATIONS COMMUNICATIONS Two sets of output contacts for monitoring of alarm conditions are provided. Master alarm contact shall be activated by any condition defined as "serious alarm" by the user. The secondary contact is activated by non-safety related alarms. Multiple systems may be connected into a local network, allowing monitoring and control of up to thirty-one units from one user interface panel. A dedicated supervisory interface may be located up to a distance of 600 feet from the nearest control board. A site supervision software package is available for networked monitoring and control of multiple unit installations. This Windows TM based software allows centralized control of up to 800 compatible devices. Serial connection to generic supervisory systems, without external gateway devices, using embedded multiprotocol software. The unit control can be directly connected to remote management systems currently operating on the Modbus TM, BACnet TM, or Echelon standard. Skymark Model # Nomenclature Code Product Type Accessory Options Unit Type Airflow Configuration Reheat Option Cooling Capacity Cooling Source Humidifier Option Voltage System Control Option 7

8 AIR COOLED FLOOR MOUNTED UNITS Model PVA_180 PVA_235 Net Cooling Performance (Btu/hr), Standard 0.5 in wg ESP 80 F DB/67 F WB 75 F DB/62.5 F WB 75 F DB/61 F WB 72 F DB/60 F WB 72 F DB/58.6 F WB Total 204, ,900 Sensible 166, ,700 Total 189, ,600 Sensible 162, ,600 Total 187, ,600 Sensible 175, ,100 Total 180, ,900 Sensible 158, ,700 Total 182, ,900 Sensible 173, ,400 Reheat/Heat Data (Btu/hr) - Includes Blower Motor Heat Electric - BTUH (Kw) 100,800 (25) 125,700 (30) Quantity of Stages 3 3 Hot Water F EWT, 75 F EAT 1) Capacity (Btu/hr) 118, ,700 Flow Rate (gpm) Pressure Drop (ft wc) Steam - 15 PSIG Steam, 75 F EAT 1) Capacity (Btu/hr) 136, ,600 Humidification - Steam Canister with Adjustable Output Capacity (lb/hr) Control Evaporator Blower Data - Centrifugal, Belt Drive Proportional Quantity of Blowers 2 2 Standard Motor (Hp) CFM with Standard Motor 8,150 10,000 Design ESP (in wg) with Standard Motor Oversize Motor (Hp) n/a n/a MAX ESP (in wg) with Oversize Motor n/a n/a Evaporator Coil-Copper Tubes, Aluminum Fins Face Area (sq ft) Rows 3 4 Filters - Qty/Size (in) Downflow 4/24x24x4 4/24x24x4 Upflow 6/25x16x4 6/25x16x4 Compressor-Type/Qty. Scroll / 2 Outdoor Condenser Data (95 F) - Propeler Fan, Direct Drive Model ACC180 ACC240 CFM Motor (Hp) / Qty. 0.5 / / 4 Condenser Coil-Copper Tubes, Aluminum Fins Face Area (sq ft) Rows/FPI 2/10 3/10 Connection Sizes Hot Gas 7/8OD 1-1/8OD Liquid Line 5/8OD 5/8OD Condensate Drain 7/8OD Humidifier Inlet 1/4OD Hot Water Inlet/Outlet 5/8OD Steam Inlet/Outlet 3/4MPT Max. Weight (lb) ) Hot water and steam reheat will reduce blower performance. Consult factory for details. 8

9 WATER COOLED FLOOR MOUNTED UNITS Model PVW_190 PVW_245 Net Cooling Performance (Btu/hr), Standard 0.5 in wg ESP 80 F DB/67 F WB 75 F DB/62.5 F WB 75 F DB/61 F WB 72 F DB/60 F WB 72 F DB/58.6 F WB Total 217, ,000 Sensible 172, ,600 Total 200, ,900 Sensible 168, ,000 Total 196, ,100 Sensible 180, ,000 Total 190, ,500 Sensible 163, ,000 Total 187, ,000 Sensible 175, ,500 Reheat/Heat Data (Btu/hr) - Includes Blower Motor Heat Electric - BTUH (kw) 100,800 (25) 125,700 (30) Quantity of Stages 3 3 Hot Gas 1) Total Capacity (Btu/hr) / (Electric Capacity - kw) 104,400 / (10) 130,500 / (10) Hot Water F EWT, 75 F EAT 1) Capacity (Btu/hr) 118, ,700 Flow Rate (gpm) Pressure Drop (ft wc) Steam - 15 PSIG Steam, 75 F EAT 1) Capacity (Btu/hr) 136, ,600 Humidification - Steam Canister with Adjustable Output Capacity (lb/hr) Control Proportional Evaporator Blower Data - Centrifugal, Belt Drive Quantity of Blowers 2 2 Standard Motor (Hp) CFM with Standard Motor 8,150 10,000 Design ESP (in wg) with Standard Motor Oversize Motor (Hp) n/a n/a MAX ESP (in wg) with Oversize Motor n/a n/a Evaporator Coil-Copper Tubes, Aluminum Fins Face Area (sq ft) Rows 3 4 Filters - Qty/Size (in) Downflow 4/24x24x4 4/24x24x4 Upflow 6/25x16x4 6/25x16x4 Compressor-Type/Qty. Scroll / 2 Shell & Tube Condenser Data - 75 F DB/62.5 F WB EAT Water Flow (GPM) 85 o F EWT - 10 o F dt Pressure Drop (psi) (Includes regulating valve) Standard Head Pressure Control 2-way, 150PSIG Water Regulating Valve Connection Sizes Water In 1-5/8 OD 2-1/8 OD Water Out 1-5/8 OD 2-1/8 OD Condensate Drain 7/8OD Humidifier Inlet 1/4OD Hot Water Inlet/Outlet 5/8OD Steam Inlet/Outlet 3/4MPT Max. Weight (lb) ) Hot gas, hot water and steam reheat will reduce blower performance. Consult factory for details. 9

10 GLYCOL COOLED FLOOR MOUNTED UNITS Model PVG_185 PVG_240 Net Cooling Performance (Btu/hr), Standard 0.5 in wg ESP 80 F DB/67 F WB 75 F DB/62.5 F WB 75 F DB/61 F WB 72 F DB/60 F WB 72 F DB/58.6 F WB Total 210, ,900 Sensible 178, ,300 Total 194, ,300 Sensible 173, ,600 Total 192, ,100 Sensible 185, ,800 Total 185, ,800 Sensible 169, ,000 Total 187, ,200 Sensible 181, ,200 Reheat/Heat Data (Btu/hr) - Includes Blower Motor Heat Electric - BTUH (Kw) 100,800 (25) 125,700 (30) Quantity of Stages 3 3 Hot Gas 1) Capacity (Btu/hr) 105,800 / (10) 132,300 / (10) Hot Water F EWT, 75 F EAT 1) Capacity (Btu/hr) 118, ,700 Flow Rate (gpm) Pressure Drop (ft wc) Steam - 15 PSIG Steam, 75 F EAT 1) Capacity (Btu/hr) 136, ,600 Humidification - Steam Canister with Adjustable Output Capacity (lb/hr) Control Proportional Evaporator Blower Data - Centrifugal, Belt Drive Quantity of Blowers 2 2 Standard Motor (Hp) CFM with Standard Motor 8,150 10,000 Design ESP (in wg) with Standard Motor Oversize Motor (Hp) n/a n/a MAX ESP (in wg) with Oversize Motor n/a n/a Evaporator Coil-Copper Tubes, Aluminum Fins Face Area(sq ft) Rows 3 4 Filters - Qty/Size (in) Downflow 4/24x24x4 4/24x24x4 Upflow 6/25x16x4 6/25x16x4 Compressor-Type/Qty. Scroll / 2 Shell & Tube Condenser Data - 75 F DB/62.5 F WB EAT Glycol Flow (GPM) 105 F EGT 10 o F dt Pressure Drop (ft wc) Standard Head Pressure Control 3-way, 150PSIG Water Reg. Valve Drycooler Data - 95 F Outdoor Air, 40% Solution Model ACG185 ACG240 CFM 24,000 38,400 Motor (Hp)/Number Used 0.5/4 0.5/6 Pressure Drop (ft wc) Connection Sizes Glycol In 1-5/8 OD 2-1/8 OD Glycol Out 1-5/8 OD 2-1/8 OD Condensate Drain 7/8OD Humidifier Inlet 1/4OD Hot Water Inlet/Outlet 5/8OD Steam Inlet/Outlet 3/4MPT Max. Weight (lb) ) Hot gas, hot water and steam reheat will reduce blower performance. Consult factory for details. 10

11 CHILLED WATER FLOOR MOUNTED UNITS Model PVF_195 PVF_250 Net Cooling Performance (Btu/hr), 45F EWT, 10F water temp rise Total 335, , F DB/67 F WB 75 F DB/62.5 F WB 75 F DB/61 F WB 72 F DB/60 F WB 72 F DB/58.6 F WB Sensible 234, ,700 Flow Rate (GPM) Press. Drop (PSI) Total 235, ,640 Sensible 198, ,900 Flow Rate (GPM) Press. Drop (PSI) Total 219, ,800 Sensible 206, ,100 Flow Rate (GPM) Press. Drop (PSI) Total 190, ,300 Sensible 177, ,100 Flow Rate (GPM) Press. Drop (PSI) Total 185, ,400 Sensible 183, ,200 Flow Rate (GPM) Press. Drop (PSI) Reheat/Heat Data (Btu/hr) - Includes Blower Motor Heat Electric - BTUH (kw) 100,800 (25) 125,700 (30) Quantity of Stages 3 3 Hot Water F EWT, 75 F EAT 1) Capacity (Btu/hr) 119, ,200 Flow Rate (gpm) Pressure Drop (ft wc) Steam - 15 PSIG Steam, 75 F EAT 1) Capacity (Btu/hr) 136, ,600 Humidification - Steam Canister with Adjustable Output Capacity (lb/hr) Control Proportional Evaporator Blower Data - Centrifugal, Belt Drive Quantity of Blowers 2 2 Standard Motor (Hp) CFM with Standard Motor 8,700 10,500 Design ESP (in wg) with Standard Motor Oversize Motor (Hp) n/a n/a MAX ESP (in wg) with Oversize Motor n/a n/a Chilled Water Coil-Copper Tubes, Aluminum Fins Face Area(sq ft) Rows 4 5 Valve Type 3-Way 3-Way Valve Actuation Modulating Modulating Filters - Qty/Size (in) Downflow 4/24x24x4 4/24x24x4 Upflow 6/25x16x4 6/25x16x4 Connection Sizes Water In 2-1/8 OD Water Out 2-1/8 OD Condensate Drain 7/8OD Humidifier Inlet 1/4OD Hot Water Inlet/Outlet 5/8 OD Steam Inlet/Outlet 1/2MPT Max. Weight (lb) ) Hot water and steam reheat will reduce blower performance. Consult factory for details. 11

12 12 PRECISION UPFLOW UNIT 15 & 20 TON

13 PRECISION DOWNFLOW UNIT 15 & 20 TON 13

14 ELECTRICAL DATA- STANDARD MOTORS Note: 1) Values shown are for the PV unit only. Outdoor condensers or drycoolers require a separate electrical service. 2) Ratings are based on dehumidification with single compressor stage only. Contact Skymark for ratings with two stage dehumidification. 14

15 ELECTRICAL DATA- HOT GAS REHEAT WITH STANDARD MOTORS Note: 1) Values shown are for the PV unit only. Outdoor condensers or drycoolers require a separate electrical service. 2) Ratings based on dehumidification with single compressor stage only. Contact Skymark for ratings with two stage dehumidification. 15

16 CHILLED WATER UNIT ELECTRICAL DATA- STANDARD MOTORS MODEL VOLTAGE EVAP. FAN HEATER HUMIDIFER MCA MAX FUSE / # HP FLA AMP AMP CCT. BKR. AMP PVF* /3/ PVF* /3/ PVF* /3/ PVF* /3/ PVF* /3/ PVF* /3/ PVF* /3/ PVF* /3/ PVF* /3/ PVF* /3/ PVF* /3/ PVF* /3/ PVF* /3/ PVF* /3/ PVF* /3/ PVF* /3/ PVF* /3/ PVF* /3/ PVF* /3/ PVF* /3/ PVF* /3/ PVF* /3/ PVF* /3/ PVF* /3/ PVF* /3/ PVF* /3/ PVF* /3/ PVF* /3/ PVF* /3/ PVF* /3/ PVF* /3/ PVF* /3/

17 OUTDOOR AIR-COOLED CONDENSER DATA - 15 & 20 TON CONDENSER ELECTRICAL DATA MODEL NUMBER ACC180 ACC240 UNIT VOLTAGE FLOODED CONDENSER CONTROL FAN SPEED CONTROL FLA MCA MFS FLA MCA MFS /1/ /3/ /3/ /3/ CONDENSER DIMENSIONAL DATA MODEL NUMBER HOT GAS LIQUID WEIGHT DIM'N DIM'N FAN SPEED CONTROL FLOODED CONDENSER HP QTY (lbs.) A L ACC180 2 X 1-1/8 OD 2 X 7/8 OD 2 X 5/8 OD 1/ ACC240 2 X 1-3/8 OD 2 X 1-1/8 OD 2 X 3/4 OD 1/ FANS 17

18 GLYCOL DRY-COOLER DATA 15 & 20 TON DRYCOOLER ELECTRICAL DATA MODEL NUMBER ACG180 ACG240 UNIT VOLTAGE FLA MCA MFS /1/ /3/ /3/ /3/ /1/ /3/ /3/ /3/ DRYCOOLER DIMENSIONAL DATA MODEL NUMBER IN / OUT CONNECTIONS FANS VOLUME WEIGHT DIM'N DIM'N HP QTY (gal.) (lbs.) A L ACG /2 MPT 1/ ACG /2 MPT 1/

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20 SKYMARK PRODUCT WARRANTY Skymark International warrants to the original owner/user of the Skymark International unit identified above to be free of original defects in material or workmanship for a period of one year from the effective date of this warranty. This warranty extends to twelve (12) months from the date of start-up, but no longer than eighteen (18) months from the date of shipment. The warranty does not include the filter. This warranty on the unit obligates Skymark International to repair or replace, free of charge, any part or parts that show evidence of being defective in material and workmanship and are so deemed so defective by authorized personnel of Skymark International. The part must be returned for replacement with the proper information when requested. Skymark International assumes no obligation for labor required to replace the defective part or parts nor the freight or postage required to return or to secure the part which shall be at the cost and expense of the original Owner/User. Skymark International will replace the defective part or parts within 21 days after the return to Skymark International of such defective part or parts provided notice of such defect was given by the original Owner/User within the Warranty period. An optional, additional four year protection plan on the compressor is available at modest cost at the time of original unit sale only. This obligates Skymark International to replace f.o.b. factory, a defective compressor of equal capacity free of charge. No responsibility is assumed by Skymark International for refrigerant, labor, or freight to and from the factory. THIS WARRANTY IS IN LIEU OF ALL OTHER EXPRESSED WARRANTIES. ALL IMPLIED WARRANTIES, INCLUDING WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE ARE LIMITED IN DURATION TO ONE (1) YEAR FROM EFFECTIVE DATE OF THIS WARRANTY. SKYMARK INTERNATIONAL IS NOT LIABLE FOR CONSEQUENTIAL DAMAGES RESULTING FROM ANY DEFECT IN PART. THERE ARE NO OTHER OBLIGATIONS ON THE PART OF SKYMARK INTERNATIONAL. WARRANTY OF FITNESS Skymark International does not provide a warranty of fitness since, in good faith, Skymark International cannot anticipate or control the many different conditions under which Skymark International information and products may be used. City of New York Department of Buildings MEA Skymark maintains a continuous product improvement policy, therefore specifications are subject to change without notice. PHONE: FAX: TOLL FREE: SKYMARK ( ) WEB: 10/04