Related Manuals for Stulz CeilAIR Series
Summary of Contents for Stulz CeilAIR Series
- Page 1 CeilAiR OHS Series Installation, Operation & Maintenance Manual (Mar, 2012) Air Technology Systems, Inc.
- Page 2 CeilAiR OHS Series Installation, Operation & Maintenance Manual MODEL NOMENCLATURE OHS-040-G-FC AWS = Alternate Water Source = Free Cooling = Low Profi le Confi guration = Same-Face Air Pattern OHS = Overhead System = Special Confi guration AHU = Air Handling Unit = Air-Cooled Remote (Split) Nominal Capacity in 1,000’s of BTU/Hr = Air-Cooled Self-Contained...
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Page 3: Table Of Contents
CeilAiR OHS Series Installation, Operation & Maintenance Manual TABLE OF CONTENTS Introduction ..........1-1 2.7.3.3 Remote Water Detector ......2-15 General.............1-1 2.7.4 Air-Cooled Split Systems......2-16 Product Description ........1-1 2.7.4.1 Remote Condenser ........2-16 Controls ............1-2 2.7.4.2 Remote Condensing Unit .......2-16 Product Warranty ........1-3 2.7.5 Glycol Systems ........2-16 Safety ............1-4... - Page 4 No part of this document may be photocopied, reproduced, or translated into another language for use by anyone other than the owner of the equipment for which this manual is written without the prior written consent of Stulz Air Technology Systems, Inc. (SATS).
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Page 5: Introduction
2’ x 4’ frame for units Thank you for your selection of the CeilAiR® ceiling- ranging from 12,000 to 40,000 BTU/Hr (spot cooler mounted air conditioning system made by Stulz Air or ducted) or a larger frame for units ranging from Technology Systems, Inc. -
Page 6: Product Warranty
Order Entry and Start-Up has been validated by Product Support. The 12 Month Precision A/C Limited Warranty provided by Stulz Air Technology Systems, Inc. (SATS) warrants your purchase to be free from defects in material and workmanship. SATS’ obligation under this warranty is to... - Page 7 Compressor 1 Serial #: Compressor 2 Serial #: Stulz Air Technology Systems, Inc. (SATS) warrants your purchase to be free from defects in material and workmanship for 60 months (original standard 24 months and purchased additional 36 months). SATS’ obligation under this warranty is to repair or replace, at its option, free of charge to the customer, any part or parts which are determined by SATS to be defective for a period of 60 months from the date of start-up.
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Page 8: Safety
1.5.1 General To prevent personal injury, stay clear of rotating components as automatic controls may start Stulz Air Technology Systems, Inc. uses notes along them unexpectedly. Turn off power to the unit with caution and warning symbols throughout this unless you are performing tests that require manual to draw your attention to important opera- power. - Page 9 CeilAiR OHS Series Installation, Operation & Maintenance Manual WARNING CAUTION This unit employs high voltage equipment with Certain maintenance or cleaning procedures rotating components. Exercise extreme care to may call for the use and handling of chemi- avoid accidents and ensure proper operation. cals, solvents, or cleansers.
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Page 10: General Design
CeilAiR OHS Series Installation, Operation & Maintenance Manual 1.6 General Design The CeilAiR unit is housed in an aluminum frame type cabinet and is rated for indoor use. Access panels are lo- cated on the front and rear of the cabinet for easy access to all components. Additional access may be obtained to some components through the bottom of the unit on spot cooler confi... - Page 11 CeilAiR OHS Series Installation, Operation & Maintenance Manual 1.6.5 Optional Equipment ing during the dehumidifi cation cycle. Hot compres- sor discharge gas is diverted from the condenser to a 1.6.5.1 Humidistat/Dehumidistat hot gas heating coil mounted in the supply air stream. As an option for systems utilizing an A-Tech 1.1 or 1.6.5.4 Humidifi...
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Page 12: Installation
CeilAiR OHS Series Installation, Operation & Maintenance Manual 2.0 Installation NOTE Working clearance requirements need to be 2.1 Receiving the Equipment established prior to the mounting of the unit. Refer to local and national electrical codes. Your CeilAiR OHS system has been tested and inspected prior to shipment. -
Page 13: Mounting
CeilAiR OHS Series Installation, Operation & Maintenance Manual 2.4.2 Outdoor Equipment CAUTION Install remote condensers/condensing units in a se- When moving the unit, it must be kept level and in cure location where the unit cannot be tampered with the horizontal position to prevent damage. and the power service switch cannot be inadvertently turned off. -
Page 14: Optional Equipment
CeilAiR OHS Series Installation, Operation & Maintenance Manual Mount the thermostat upright on an inside wall within 1. Pull dial knob off, loosen screw (located at bot- the conditioned room that best represents the aver- tom of unit) and remove cover. age room temperature. -
Page 15: Condensate Pump (Field Inst.)
CeilAiR OHS Series Installation, Operation & Maintenance Manual 2.4.4.2 Condensate Pump (Field Installed) 2. Remove the cover by pulling it out and up at the bottom. The condensate pump should be as near to the air 3. Remove the circuit board from the base by conditioning system as possible. -
Page 16: Cable Type Water Detector
CeilAiR OHS Series Installation, Operation & Maintenance Manual 2.5 Air Distribution Connection CAUTION 2.5.1 Spot Cooler (See Figure 2) The probes must not touch the mounting sur- face. Failure to adhere to this may result in For units that are not ducted, the air conditioner should improper operation of equipment. -
Page 17: Ducted Systems
CeilAiR OHS Series Installation, Operation & Maintenance Manual 2.5.2 Ducted Systems (See Figure 3) There are three basic confi gurations of airfl ow patterns: 90º/Right Angle, Straight-Thru and In/Out Same-Face. When determining ducting requirements, always consult your local and state codes. The duct system should be designed to allow the air to move with as little resistance as possible. - Page 18 CeilAiR OHS Series Installation, Operation & Maintenance Manual Wrap wet rags around the pipes between the areas RECOMMENDED DISCHARGE LINE SIZES to be soldered and any nearby refrigeration compo- Model No. / * Equivalent Length Ft. nents to keep excessive heat from traveling through Total Unit Capacity the pipe and causing damage.
- Page 19 CeilAiR OHS Series Installation, Operation & Maintenance Manual 2.6.2 Chilled Water, Water/Glycol and Hot RECOMMENDED SUCTION LINE SIZES Water Reheat Piping *Equivalent Length Ft. Model No./ The piping connections for water/glycol, chilled water Total Unit Capacity 50’or less 100’or less and systems with hot water reheat are sweat connec- tions.
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Page 20: Condensate Drain Line
CeilAiR OHS Series Installation, Operation & Maintenance Manual 2.6.3 Condensate Drain Line 2.6.4 Humidifi er (Optional) CeilAiR systems utilize an electrode steam humidifi er. 2.6.3.1 Gravity Drain The humidifi er empties into the condensate drain A 7/8 inch OD copper (sweat type) line is provided line during the fl... -
Page 21: Utility Connections
CeilAiR OHS Series Installation, Operation & Maintenance Manual 2.7 Utility Connections 2.7.1 Main Power The CeilAiR product offering is available in single or three phase variations and a wide range of voltages. It is imperative that the unit nameplate be examined to determine the operating voltage, frequency and phase of the system (see Figure 5). -
Page 22: Figure 6 Transformer Schematic
CeilAiR OHS Series Installation, Operation & Maintenance Manual disconnect switch to the surface of the unit. If the 2.7.1.2 Single-Phase Units 277V factory installed, non-fused service switch option was Single-phase units require that the hot leg of power purchased, the main power and ground connection be connected to terminal L1 and the neutral wire to shall be located at the non-fused service switch, terminal L2 of the main power distribution block. -
Page 23: Controls
CeilAiR OHS Series Installation, Operation & Maintenance Manual Upon examination of the buck/boost transformer, it After all wiring connections are complete, check the may be observed that the labeled primary voltage voltage at the main power distribution block in the is 120, 240 and/or 480 while the secondary voltage unit’s electrical box to ensure the unit has the correct is 12, 16, 24, 32 and/or 48 but not limited to these... -
Page 24: Figure 7 A-Tech-1.1 Control Wiring
CeilAiR OHS Series Installation, Operation & Maintenance Manual 2.7.2.1 A-Tech-1.1 Programmable Thermostat (Single Stage Unit; See Figure 7) Set the dip switches located on the circuit board according to the application needs. Refer to the chart below for factory settings. The thermostat requires four conductors wired to the control terminal board located within the unit electrical box. - Page 25 CeilAiR OHS Series Installation, Operation & Maintenance Manual 2.7.2.2 A-Tech-1.2 Programmable Thermostat (Dual Stage Unit; See Figure 8) Set the dip switches located on the circuit board according to the application needs. Refer to the following chart provided for factory settings. The thermostat requires seven conductors wired to the control terminal board located within the unit electrical box.
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Page 26: Optional Equipment
CeilAiR OHS Series Installation, Operation & Maintenance Manual Figure 8- A-Tech-1.2 Control Wiring box. Two control conductors must be wired to the 2.7.3 Optional Equipment control terminal board located within the unit electric NOTE box. The condensate pump provides pigtail leads for All customer provided wiring must be in accor- splice type wire connections with twist on connectors dance with local and national electrical code... -
Page 27: Remote Water Detector
CeilAiR OHS Series Installation, Operation & Maintenance Manual remote condenser control box. A separate equip- 2.7.3.3 Remote Water Detector ment ground lug is provided within the electrical box Spot Type: for termination of the earth ground wire. A remote spot type water detector requires three The installer must also wire two control conductors conductors to be wired to the control terminal board from the terminal board within the evaporator unit to... - Page 28 CeilAiR OHS Series Installation, Operation & Maintenance Manual 6 CNDCT. PHONE TYPE 3 CONDUCTOR NON-SHIELDED CABLE SHIELDED CABLE SEE NOTE 3 REMOTE TEMPERATURE/ E² CONTROLLER DISPLAY HUMIDITY SENSOR E² DISPLAY PLUGS DIRECTLY INTO THE (OPTIONAL) CONTROLLER INSIDE THE ELECTRIC BOX REMOTE TEMPERATURE SENSOR (OPTIONAL) SEE NOTE 3...
- Page 29 CeilAiR OHS Series Installation, Operation & Maintenance Manual 6 CNDCT. PHONE TYPE 3 CONDUCTOR NON-SHIELDED CABLE SHIELDED CABLE SEE NOTE 3 REMOTE TEMPERATURE/ E² CONTROLLER DISPLAY HUMIDITY SENSOR E² DISPLAY PLUGS DIRECTLY INTO THE (OPTIONAL) CONTROLLER INSIDE THE ELECTRIC BOX SEE NOTE 3 REMOTE CONDENSING UNIT 3.
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Page 30: Remote Shut Down
CeilAiR OHS Series Installation, Operation & Maintenance Manual for 2 hours. Ensure no portion of system has 2.7.6 Remote Shut Down been isolated from the evacuation process NOTE (liquid, suction or discharge lines). All wiring must be provided in accordance with local CAUTION and national electrical code requirements for Class 2 circuits. -
Page 31: R407C Refrigerant Charging Procedures
CeilAiR OHS Series Installation, Operation & Maintenance Manual temperature-measuring device being well CAUTION insulated. The sub-cooling temperature should An adequate heat load must be supplied to the unit be approximately 10-20ºF. to ensure a proper charge. NOTE 3. After starting the system, immediately supply Under cold climate conditions it is recommended to do R22 vapor to the suction port until the liquid line the following:... -
Page 32: System Settings & Adjustments
CeilAiR OHS Series Installation, Operation & Maintenance Manual 7. Slowly meter R407C liquid refrigerant through the CAUTION suction side while watching for the sight glass to POE oil is used in systems with R407C refrigerant. clear of bubbles. POE oil quickly absorbs moisture when exposed to CAUTION air. -
Page 33: Head Pressure Controls-Air Cooled Systems
CeilAiR OHS Series Installation, Operation & Maintenance Manual 2.9.2 Head Pressure Controls- speed. The controller is factory installed in the outdoor condenser/condensing unit. The fan speed Air Cooled Systems controller requires no adjustment. 2.9.2.1 Condenser Fan Cycling The fan speed controller will automatically control the (Condenser Model SCS-AA, 0°F) head pressure. -
Page 34: Humidifi Er Adjustment
CeilAiR OHS Series Installation, Operation & Maintenance Manual This method of controlling head pressure allows the with the valve types which can be differentiated by condenser fan to run continuously. While the fan is the maximum water pressure rating of the valve, running, the fl... -
Page 35: Thermal Expansion Valve
CeilAiR OHS Series Installation, Operation & Maintenance Manual blower speed. If the motor pulls too much current, slow the blower down by opening the adjustable sheave one half turn at a time until the motor current is at or below the nameplate FLA. 12. - Page 36 CeilAiR OHS Series Installation, Operation & Maintenance Manual 2.9.8.1 Snap Acting Hot Gas Bypass psig (suction pressure) read from the suction (low) side of the compressor as it operates in full hot gas The snap acting hot gas bypass system provides for bypass operation.
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Page 37: Refrigerant Pressure Characteristics
CeilAiR OHS Series Installation, Operation & Maintenance Manual 2.10 Refrigerant Characteristics 2.10.2 Saturated Refrigerant Pressure Tables 2.10.1 Pressure / Temperature Settings The following refrigerant pressure tables are provided The following chart is provided to assist with the for reference. normal settings of the system. Where applicable, minimum and maximum settings are given along with normal operating pressures. -
Page 38: Start-Up / Commissioning
CeilAiR OHS Series Installation, Operation & Maintenance Manual 3.0 Start-Up / Commissioning a manual mode, refer to the separate Controller Operations Manual sent with your unit. 3.1 Operation 4. Test cooling operation by setting the temperature setpoint below the actual room temperature. The For new installations, ensure the unit is ready to compressor should come on and the discharge operate by going through the completed installation... -
Page 39: Thermostat Programming
CeilAiR OHS Series Installation, Operation & Maintenance Manual 3.3 Thermostat Programming pens, simply repeatedly press the PROGRAM button until you get back to where you left off. 3.3.1 A-Tech-1.1 (See Figure 14) The information you have already entered has been retained. The A-Tech-1.1 is a programmable thermostat that represents one of the most advanced, solid-state, If it is desired at any time to change the clock, sched-... - Page 40 CeilAiR OHS Series Installation, Operation & Maintenance Manual 3.3.1.2 Setback Feature - Setting the STEP 8 - Repeat programming steps 2 through 7 for Weekday Program Schedule and each desired event. Heating Temperatures NOTE STEP 1 - Press and release the MODE button until You may wish to use only 2 schedules, such word HEAT and the heating symbol as morning and night.
- Page 41 CeilAiR OHS Series Installation, Operation & Maintenance Manual 3.3.1.4 Setback Feature - Setting 3.3.1.5 Reviewing Scheduled the Weekday and Weekend Times and Temperatures Cooling Temperatures To review your programming schedules, press and Since the programmed time schedules are the same release the MODE button to advance to desired for both heating and cooling, you only need to set mode (heating or cooling).
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Page 42: A-Tech-1.2
CeilAiR OHS Series Installation, Operation & Maintenance Manual 3.3.2 A-Tech-1.2 (See Figure 15) plete the program schedule chart provided before beginning programming. The A-Tech-1.2 is a programmable thermostat that NOTE represents one of the most advanced, solid-state, microcomputer temperature controllers available. The While programming you must press a button, A-Tech-1.2 programmable thermostat provides the at least every 15 seconds or the thermostat... - Page 43 CeilAiR OHS Series Installation, Operation & Maintenance Manual STEP 2 - Press and release the CLOCK button 3.3.2.3 Setting Heating Temperatures again. Display will fl ash the hour (12: _ _) and (AM) STEP 1 - Press and release the MODE button until or (PM).
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Page 44: Advanced E² Controller
CeilAiR OHS Series Installation, Operation & Maintenance Manual Program Schedule Desired Time Schedule Thermostat Event Temperature Symbol M o Tu We Setting heat = Morning Cool = heat = Cool = heat = Evening Cool = heat = Night Cool = 3.3.2.7 Temperature Override 3.3.2.9 Continuous Auto/Fan... -
Page 45: Maintenance
CeilAiR OHS Series Installation, Operation & Maintenance Manual 4.0 Maintenance WARNING 4.1 Periodic General Maintenance Phosgene, a deadly, poisonous gas, is gen- erated when refrigerant is exposed to fl ame. Systematic, periodic general maintenance of the Always ensure adequate ventilation during CeilAiR unit is recommended for optimum system refrigeration repairs. -
Page 46: Condensing Unit
CeilAiR OHS Series Installation, Operation & Maintenance Manual 4.1.1.5 Condensate Pump 4.1.2 Condensing Unit The optional condensate pump should be inspected Maintenance access to the condensing unit is semiannually and cleaned. Ensure that the fl oat through one or two removable panels (depending works freely. - Page 47 CeilAiR OHS Series Installation, Operation & Maintenance Manual SYMPTOM PROBABLE CAUSE RECOMMENDATION Evaporator Coil Ices (Cont.) 2. Check for and clear any obstructions across or in the (supply) discharge airstream. 3. Check correct rotation of evaporator blower. b. Temperature setting Increase temperature too low (68°F min.).
- Page 48 CeilAiR OHS Series Installation, Operation & Maintenance Manual SYMPTOM PROBABLE CAUSE RECOMMENDATION Condenser Pressure Too High 2. Valves not open or partially open. (Cont.) Repair/replace as needed. 3. Air in system - bleed system. 4. Check all strainers and clean if needed.
- Page 49 CeilAiR OHS Series Installation, Operation & Maintenance Manual SYMPTOM PROBABLE CAUSE RECOMMENDATION Compressor Short Cycles a. Low line voltage causing Check power source for cause ofl ow compressor to overheat. line voltage. b. Dirty or iced over evaporator coil. Defrost and/or clean coil. c.
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Page 50: Field Service
CeilAiR OHS Series Installation, Operation & Maintenance Manual 4.3 Field Service 4.3.4 General Common Repairs/ Component Replacement NOTE Do not attempt to make repairs without the 4.3.4.1 Compressor Failure proper tools. The compressor is the most important component of the air conditioner. Numerous safety devices are It may be necessary to perform repairs on the re- provided to protect the compressor from failing. -
Page 51: Standard Cleanout Procedure
CeilAiR OHS Series Installation, Operation & Maintenance Manual 2. Turn off power to the unit at the main power CAUTION disconnect switch. Damage to a replacement compressor caused 3. Remove the burned-out compressor and install by improper system cleaning constitutes abuse the new compressor. -
Page 52: Filter Replacement
CeilAiR OHS Series Installation, Operation & Maintenance Manual up to disengage it from the humidifi er. CAUTION 12. Place the new cylinder on the side mounting slots Failure to replace the cylinder at the end of within the unit, ensuring the cylinder mounting cylinder life may result in humidifi... -
Page 53: Product Support
Product Support by fax (301) 620- 1396, telephone (240) 529-1399 or E-mail (parts@ • Description of Problem stulz-ats.com). Quotes are given for specifi ed listed parts for a specifi c unit. 5.2 Obtaining Warranty Parts SATS accepts Visa and MasterCard. SATS may ex- Warranty inquires are to be made through the Techni- tend credit to its customers;... - Page 54 CeilAiR OHS Series Installation, Operation & Maintenance Manual NOTES (Mar, 2012) Air Technology Systems, Inc.
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Page 55: Condensing Unit (A-Tech-20)
CeilAiR OHS Series Installation, Operation & Maintenance Manual Frederick, Maryland USA 21704 Air Technology Systems, Inc. OHS Series Precision Air Conditioner Telephone: (301) 620-2033 Facsimile: (301) 620-1396 Appendix A - Forms Checklist for Completed Installation Proper clearances for service access have Duct work completed or optional plenum been maintained around equipment. - Page 56 CeilAiR OHS Series Installation, Operation & Maintenance Manual (Mar, 2012) Air Technology Systems, Inc.
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Page 57: Periodic General Maintenance Checks And Service Checklist
CeilAiR OHS Series Installation, Operation & Maintenance Manual Frederick, Maryland USA 21704 Air Technology Systems, Inc. Telephone: (301) 620-2033 Facsimile: (301) 620-1396 OHS Series Precision Air Conditioner Periodic General Maintenance Checks and Services Checklist Date: ____________________________ Prepared By: ___________________________ Model Number: ____________________________ Serial Number: __________________________ Item Number: ____________________________... - Page 58 CeilAiR OHS Series Installation, Operation & Maintenance Manual (Mar, 2012) Air Technology Systems, Inc.
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Page 59: Appendix B - Glossary
CeilAiR OHS Series Installation, Operation & Maintenance Manual Appendix B – Glossary Defi nition of Terms and Acronyms SATS - Stulz Air Technology Systems, Inc. MAX FUSE - Maximum Fuse BTU/Hr - British Thermal Units Per Hour MCA - Minimum Circuit Ampacity... - Page 60 CeilAiR OHS Series Installation, Operation & Maintenance Manual (Mar, 2012) OCH0006-B; March, 2012 OHS Series Installation, Operation & Maintenance 03/11- Specifi cations are subject to change without notice. Air Technology Systems, Inc.
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