Table of Contents
Advertisement
Advertisement
Table of Contents
Related Manuals for Data Aire gForce GT series
Summary of Contents for Data Aire gForce GT series
- Page 2 Special care should be given to those area where these symbols appear. Data Aire, Inc. reserves the right to make design changes for the purposes of product improvement, or to withdraw any design without notice.
-
Page 3: Table Of Contents
Table of Contents INSTALLATION ....................6 Room Considerations .................... 6 Inspection ......................6 Rigging ........................6 Locating the Unit ....................7 1.4.1 Downflow Units...................... 7 1.4.2 Upflow Units ......................8 Paperwork ......................8 Storage ........................8 PIPING ........................ 9 Air Cooled Unit Piping ................... 9 2.1.1 Discharge Lines..................... - Page 4 Protective features ....................27 Maintenance ......................27 REGULAR MAINTENANCE ITEMS ..............28 8.1 Air filters ......................28 8.2 Humidifier Canisters .................... 28 Fuses ........................28 Heating Elements ....................28 Refrigerant Filter Drier ..................28 WARRANTY ....................... 29 10.0 CONTACT DATA AIRE ..................30...
- Page 5 Table of Contents, cont’d LINE SIZING CHART ......................31 MONTHLY MAINTENANCE INSPECTION CHECKLIST ............ 32 QUARTERLY MAINTENANCE INSPECTION CHECKLIST ..........33 SUPERHEAT and SUCTION PRESSURE TROUBLE SHOOTING GUIDE ....... 34 TEMPERATURE PRESSURE CHART ................35...
-
Page 6: Installation
Inspection This Data Aire unit has been factory run-tested and has gone through a comprehensive inspec- tion prior to its packaging and shipment to ensure that it arrives in excellent condition. However, shipping damage can occur and a visual inspection of the outer crating immediately upon delivery should be performed. -
Page 7: Locating The Unit
Warning: Improper lifting or moving of equipment may result in damage to decorative doors, panels or frame members. 1.4 Locating the Unit When installing the unit, sufficient space must be allowed for airflow clearance, wiring, plumbing and service access. It is recommended that each side and front have a clearance of at least 36” to allow the doors to swing open and for servicing the unit. -
Page 8: Upflow Units
Data Alarm Processor 4 (dap4). See the dap4 operation manual for details and recommended settings. Paperwork Each Data Aire unit ships with a start-up sheet that should be completed during installation. Also included in the paperwork is a warranty/information packet that provides important wiring diagrams, specific component literature, warranty registration cards and other valuable paperwork, including a copy of this Installation/Operation and Maintenance manual. -
Page 9: Piping
Data Aire does not assume this responsibility. The chart covers distances up to 200 equivalent feet. For installations beyond this distance, consult ASHRAE or similar references. -
Page 10: Liquid Lines
Data Aire recommends a silver/phosphorus/copper alloy with 5 to 15% silver be used to braze the refrigerant line sets to the indoor and outdoor units. Nitrogen needs to be flowing through the lines to eliminate carbon deposit build-up on the inside of the joints. Carbon could contaminate the re- frigerant and restrict the metering device. -
Page 11: Connection Sizes, Air Cooled Units
2.1.4 Connection Sizes, Air Cooled Units Model Number Hot Gas Line Liquid Line Suction Line GTA*007 1/2” O.D. 1/2” O.D. 3/4” O.D. GTA*011 1/2” O.D. 1/2” O.D. 3/4” O.D. GTA*014 1/2” O.D. 1/2” O.D. 3/4” O.D. GTA*018 1/2” O.D. 1/2” O.D. 3/4”... -
Page 12: Field Piping, Remote Condensing Unit
2.1.6 Field Piping, Remote Condenser/Condensing Unit Below Evaporator Water/Glycol Cooled Unit Piping The required field installed fluid cooler pipe sizes may or may not be the same as the connection sizes on the fluid cooler (refer to 2.2.2 and 2.2.3 for connection sizing). This will depend on the length of pipe and the calculated pressure drop of peripheral components. Water cooled units may also be connected to building water or tower water sources. Pipe size will depend on length of run and the maximum water flow required. -
Page 13: Field Piping, Glycol System
One of the most common problems in a water/glycol system is the presence of air in the condenser water loop. Air vents must be installed in various locations the piping system to purge the air. Water/glycol system piping may include a centrifugal pump (or pumps for redundancy). Pumps must be primed before operating per the pump manufacturer’s guidelines. -
Page 14: Auxiliary Chilled Water Coil Piping
GHFC-74 2-1/8” O.D. GHFC-264 2-5/8” O.D. GHFC-84 2-5/8” O.D. GHFC-281 2-5/8” O.D. GHFC-99 2-5/8” O.D. GHFC-310 2-5/8” O.D. GHFC-106 2-1/8” O.D. GHFC-352 2-5/8” O.D. Models GHFC-200 and larger are double-wide units. Although the header connection for each section is 2-5/8”, each unit comes with a factory provided header manifold kit with 3-1/8” field connections. -
Page 15: Dry Steam Humidifier
The humidifier has a drain at the bottom which is factory piped to the main condensate drain line. The dispersion tube also has a drain line. No additional field piping is required. 2.5.2 Dry Steam Humidifier The optional dry steam humidifier requires a strainer on the inlet steam line. An outlet connection with field-provided steam trap is also required. Steam pressure is typical 10-15 PSI. Leak Testing No installation is complete until the entire system has been thoroughly checked for leaks. This includes checking the refrigerant tubing, flare fittings, pressure controls, Shraeder fittings and com- pressor rota-lock service valves. Check both the field and factory connections, In addition to refrigeration system, check all condenser water lines, humidifier water make- up lines, condensate lines, condensate pumps, chilled water lines, centrifugal pumps and fluid cooler (where applicable). -
Page 16: Electrical Connections
Because of the wide variety of indoor evaporators and remote heat exchangers offer by Data Aire, the installing contractor must refer to the schematic which is provided inside the electrical control... -
Page 17: Remote Shutdown
Examples: Figure 1 - Typical Remote Heat Exchanger Interconnection Points Figure 2 - Typical Indoor Evaporator Interconnection Points Remote Shutdown Every gForce unit has remote shutdown contacts. These are intended for a field supplied dry con- tact or switch to be wired across two terminals. When the contactor or switch opens, the control circuit power is interrupted and the unit shuts down, including the control panel. The control circuit is 24 VAC and the field provided contact or switch should have a minimum rating of 10 amps. -
Page 18: Remote Alarm Contacts
Remote Alarm Contacts The unit’s controller (dap4) provides a remote alarm output contact that can be field addressed on terminals # 11 and # 13 of terminal block TB1. This is a Normally Open, Close on Alarm, dry contact, intended to be used in a control circuit not exceeding 2 amps at 250 VAC. This programmable output contact will close on a failure and remain closed until the alarm is no longer present. -
Page 19: Eev Connection
3.12 Electrical Connection to EEV (Optional Feature) The Electronic Expansion Valve (EEV) uses an electrical cable assembly with a DIN type connector to interface with EEV valve stator. The connector is indexed by one large blade connection so that the connector can only be properly mate one way. When it is necessary to making this electrical connection, this connector can only properly mate in one position as shown in the picture below (See Figure 1): DIN Connector... -
Page 20: Charging
Air Cooled Systems 4.2.1 Fan Speed Control System Charging The standard air cooled condenser provided with Data Aire gForce equipment has modulating fan speed control (FSC) on the all motors. After field refrigerant piping is properly completed connect the refrigerant drum to the low side and charge with vapor (refer to Section 2.6 LEAK TESTING and Section 2.7 EVACUATION prior to charging the system). -
Page 21: Flooded System Charging
unusual at this point and can be caused by flashing from liquid line pressure drop, low sub-cooling or low charge. It is likely that more refrigerant will be required to complete the charging procedure. Adjust the refrigerant charge until the sub-cooling is between 8-10°F. There may be flashing and/or bubbles in the sight glass when the system is properly charged. The system should be allowed to stabilize for 15 to 20 minutes before meaningful measurements can be taken. After the system is allowed to stabilize, verification of a few key measurements should be noted. -
Page 22: Water/Glycol Cooled Systems
To test the plug fan modules in manual mode, turn on blower and fan speed switch on manual over- ride modules. This will enable the fan control signal at approximately 90%. The fans will spin at near full speed if the contactors are enabled. Start the evaporator fan and verify the fan rotation. -
Page 23: Refrigerant Handling
All water/glycol cooled units have a water regulating valve. A head pressure transducer is connect- ed to a Shraeder fitting on the discharge line and water is regulated into the condenser coil (plate fin condensers are standard). Before starting a compressor, the crankcase heater should be energized for a minimum of 12 hours to reduce the possibility of liquid slugging on start-up. Failure to energize the crankcase heater could result in compressor damage. -
Page 24: Glycol Systems
GLYCOL SYSTEMS Glycol Concentration The system must be filled with water and the appropriate amount of glycol (either ethylene or pro- pylene) to protect against winter freeze-up. To achieve the approximate glycol concentration, it is necessary to know the total system volume. This consists of the sum of the fluid cooler volume, the evaporator unit volume and the volume of the inter-connecting piping. The following tables can be used for arriving at an approximate system volume. After installation, the glycol percentage should be checked. -
Page 25: Fluid Cooler Internal Volume
5.4 Internal (Fluid) Volume – Fluid Coolers FLUID COOLER VOLUME FLUID COOL- VOLUME MODEL (GALLONS) ER MODEL (GALLONS) GHFC-21 GHFC-130 13.0 GHFC-25 GHFC-141 16.3 GHFC-32 GHFC-155 16.2 GHFC-39 GHFC-176 20.3 GHFC-53 GHFC-200 24.6 GHFC-60 GHFC-215 19.6 GHFC-74 GHFC-264 26.0 GHFC-84 GHFC-281 32.6 GHFC-99... -
Page 26: Controls
Data Aire’s chilled water unit wiring diagrams will have a drawing number which starts out with the three letter designation, GFX. An example of a typical diagram, GFX-S-903. -
Page 27: Testing
TESTING To test the plug fan modules in manual mode, turn on blower and fan speed switch on manual over- ride module. This will enable the fan control signal at maximum. The fans will spin at near full speed if the contactors are enabled. PROTECTIVE FEATURES EC motors have built-in protective features that include the following: Over-Temperature protection of the (motor) electronics,... -
Page 28: Regular Maintenance Items
REGULAR MAINTENANCE ITEMS Air Filters Air filters should be checked on a regular basis and changed when they become dirty. This will en- sure efficient operation of the unit. Although the unit has a dirty filter alarm, this should not be relied on as the only determinant for replacing filters. A maladjusted filter differential pressure switch may not give a proper indication of a clogged filter. To check the pressure differential switch for proper adjustment, temporarily cover about 75% of the return air opening using heavy cardboard or similar material. The alarm should energize when 75% of the air is blocked, simulating dirty filters. If the alarm energizes prematurely or does not energize at all, the pressure switch should be adjusted. -
Page 29: Warranty
Warranty Policy Seller warrants its equipment to Buyer to be free from defects in material and workmanship for a period of eighteen (18) months from date of shipment, as long as equipment is utilized under normal conditions and service and is properly installed; however, the warranty shall not be applicable to any of the following items: refrigerant, belts, filters, humidifier, heaters not regularly cleaned, light bulbs, and any other items either consumed or worn out by normal wear and tear, or by conditions beyond Seller’s control, including (without limitation as to generally) polluted or contaminated air or... -
Page 30: Contact Data Aire
714-921-6011 Engineering 714-921-6022 Part Sales E-mail: service@dataaire.com Service engineering@dataaire.com Engineering sales@dataaire.com Sales Web site: www.dataaire.com Job/Unit Information: Data Aire Job Number: ___________________________________ Evaporator Serial Number: ________________________________ Evaporator Model Number: ________________________________ Condenser/Fluid Cooler Serial Number: ______________________ Condenser/Fluid Cooler Model Number: ______________________... -
Page 31: Line Sizing Chart
RECOMMENDED LINE SIZING for AIR COOLED SPLIT SYSTEMS HOT GAS LINES – SINGLE CIRCUIT UNITS (Up To 200 Equivalent Feet) Tonnage Tons/ 50 feet Circuit feet feet feet 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-1/8 1-3/8 1-3/8 1-1/8 1-1/8 1-3/8 1-3/8 1-1/8 1-3/8 1-3/8... -
Page 32: Monthly Maintenance Inspection Checklist
Data Aire, Inc. Monthly Maintenance Inspection Checklist Model No. __________________ Serial No. ____________________ Prepared by: _______________ Date: ___ / ___/ 201__ Condensate Drain and Pump (if applicable) Air Filters ___ Check for water leaks ___ Check for restricted air flow ___ Check for restricted air flow Air Distribution Section... -
Page 33: Quarterly Maintenance Inspection Checklist
Data Aire, Inc. Quarterly Maintenance Inspection Checklist Model No. _______________________ Serial No. ___________________________ Prepared by: _____________________ Date: ___ / ___/ 201__ Air Filters Condensate Drain and Pump (if applicable) ____ Check for restricted air flow ____ Check for water leaks and restricted flow ____ Check filter differential switch ____ Pump operation ____ Wipe filter rack section clean... -
Page 34: Superheat And Suction Pressure Trouble Shooting Guide
2. Poor air distribution 3. Poor refrigerant distribution 4. Improper compressor-evaporator balance 5. Evaporator oil logged 6. Flow from one TXV affecting another’s bulb * Data Aire has ensured that valves are size properly as the unit ships from the factory. -
Page 35: Temperature Pressure Chart
Temperature Pressure Chart Temperature (°F) R-407C R-410A 43.6 89.7 44.7 91.6 45.9 93.5 47.1 95.5 48.4 97.5 49.6 99.5 50.9 101.6 52.1 103.6 53.4 105.7 54.8 107.9 53.2 110.0 57.5 112.2 58.9 114.4 60.3 116.7 61.7 118.9 63.1 121.2 64.6 123.6 66.1 125.9... - Page 36 gForceGT_IOM 03/2019...