Stulz CeilAiR Series User Manual

CeilAiR Series
Supplemental Air Conditioners
3.5 – 35 kW Systems
Ceiling Mounted, 60 Hz Data
Installation, Operation and Maintenance Manual

Stulz CeilAiR Series Specifications

General

Brand	Stulz
Model	CeilAiR Series
Category	Air Conditioner
Language	English

Summary

1.0 Introduction

1.1 General and Product Description

General information and product details of the CeilAiR OHS systems.

1.3 Control Devices

Overview of available control devices for OHS systems.

1.4 Safety Information

Safety notes, cautions, and warnings for operation.

1.5 General Design and Components

1.5.1 Electric Box Access

Procedure for accessing electrical components safely.

1.5.2 Coil(s)

Details on cooling and hot water reheating coils.

1.5.3 Blower

Information on the centrifugal blower and its motor.

1.5.4 Temperature Sensor

How the temperature sensor works with thermostats.

1.6 Optional Equipment

1.6.1 Humidistat/Dehumidistat

Details on optional humidistat/dehumidistat controls.

1.6.3 Heaters

Information on electric resistance and hot water reheat heaters.

1.6.4 Humidifier

Details on the optional electrode steam humidifier.

1.6.5 Condensate Pump

Description of the optional condensate pump system.

1.6.6 Smoke Detector

Function and placement of the smoke detector.

1.6.7 Firestat

Information on the firestat for fire detection.

1.6.8 Water Detector

Details on optional spot or strip/cable water detectors.

1.7 Free-cooling Operation

1.8 AWS Operation

2.0 Installation

2.1 Receiving and Site Preparation

Procedures for inspecting and handling delivered equipment.

2.3 Rigging

Guidelines for safely rigging and moving the unit.

2.4 Mounting

Instructions for mounting the unit in ceiling grid or above ceiling.

2.4 Installation Details

2.4.1 Indoor Equipment

Details on mounting indoor unit components.

2.4.2 Outdoor Equipment

Guidelines for installing remote condensers/units.

2.4.3 Controls

Notes on thermostat and sensor placement.

2.4.3.1 A-Tech Programmable Thermostats

Instructions for mounting A-Tech thermostats.

2.4.3.2 Advanced STULZ E2 Controller

Information on mounting the E2 controller display.

2.4.4 Optional Equipment and Sensors

2.4.4.1 Condensate Pump (Field Installed)

Instructions for installing a field-supplied condensate pump.

2.4.4.2 Non-Fused Service Switch

Details on mounting a non-fused service switch.

2.4.5 Remote Sensors

Guidelines for locating and mounting remote sensors.

2.4.5.1 Remote Temperature Sensor (A-Tech)

Instructions for installing the A-Tech remote temperature sensor.

2.4.5.2 Remote Temperature/Humidity Sensor (E2)

Instructions for mounting the E2 temperature/humidity sensor.

2.4.6 Humidistat/Dehumidistat

Mounting instructions for humidistat/dehumidistat.

2.4.7 Water Detectors and Air Distribution

2.4.7 Spot Water Detector

Placement and installation of spot water detectors.

2.4.8 Cable Type Water Detector

Installation of cable type water detectors.

2.5 Air Distribution Connection

Connecting ductwork to the unit.

2.5.1 Spot Cooler

Mounting for spot cooler units above ceiling grid.

2.5.2 Ducted Systems

Information on ducting configurations and connections.

2.6 Piping Connections

2.6.1 Refrigerant

Requirements for refrigerant piping.

2.6.1.1 Self-Contained Systems

Refrigerant connections for self-contained units.

2.6.1.2 Split Systems

Field refrigeration piping for split systems.

2.6.1.3 Remote Air Cooled Condensers (AR Models)

Guidelines for remote air-cooled condenser installation.

2.6.1.4 Remote Air Cooled Condensing Units (AHU Models)

Instructions for installing remote condensing units.

2.6.2 Chilled Water, Water/Glycol and Hot Water Reheat Piping

Piping for water/glycol and hot water reheat systems.

2.6.3 Condensate Drain Line and Humidifier

2.6.3.1 Gravity Drain

Instructions for installing the condensate gravity drain line.

2.6.3.2 Condensate Pump

Information on condensate pump installation and operation.

2.6.4 Humidifier (Optional)

Notes on humidifier installation and water supply.

2.7 Utility Connections

2.7.1 Main Power

Information on unit power requirements and nameplate data.

2.7.1.1 Single-Phase Units 208/230V

Power connection for single-phase 208/230V units.

2.7.1.2 Single-Phase Units 277V

Power connection for single-phase 277V units.

2.7.1.3 Three-Phase Units

Power connection for three-phase units.

2.7.2 Controls Wiring

2.7.2.1 A-Tech 1.1 Programmable Thermostat

Wiring for A-Tech 1.1 thermostat.

2.7.2.2 A-Tech 1.2 Programmable Thermostat

Wiring for A-Tech 1.2 thermostat.

2.7.3 Remote System Wiring

2.7.3.1 Remote Condenser

Field wiring for remote condensers.

2.7.3.2 Remote Condensing Unit

Field wiring for remote condensing units.

2.7.4 Water/Glycol Systems

Field wiring for water/glycol systems.

2.7.5 Remote Shut Down and Optional Equipment Wiring

2.7.5 Remote Shut Down

Interface for remote unit shutdown.

2.7.6 Optional Equipment

Notes on optional equipment wiring.

2.7.6.1 Condensate Pump

Power and control wiring for condensate pumps.

2.7.6.2 Humidistat/Dehumidistat

Wiring for humidistat/dehumidistat.

2.7.6.3 Remote Water Detector

Wiring for water detectors.

2.7.6.4 Remote Temperature Sensor (A-Tech)

Wiring for A-Tech temp sensors.

2.7.6.5 Remote Temperature/Humidity Sensor (E2)

Wiring for E2 temp/humidity sensors.

2.8 System Charging Procedures

2.8.1 Water/Glycol Systems

Precautions for water/glycol loop installation.

2.8.1.1 Pump

Pump operation and precautions.

2.8.2 DX Unit Charging Requirements

Best practices for DX unit charging.

2.8.3 Remote Air-Cooled Systems (AR/AHU)

Handling dry nitrogen charge.

2.8.4 R407C/R410A Refrigerant

Refrigerant properties.

2.8.5 Estimating Refrigerant Charge

Calculating refrigerant charge.

2.8.6 Preparing System For Charging

Preparing system for charging.

2.8.6.1 Evacuate the System

Evacuating the refrigeration system.

2.8.7 Refrigerant Charging Procedures

Step-by-step charging procedures.

2.8.7.1 Initial System Charge

Initial refrigerant charging steps.

2.8.7.2 Fine Tuning The System Charge

Adjusting charge while running.

2.8.7.3 0 °F Fan Cycling and -20 °F Variable Speed Control

Charging for fan cycling/variable speed.

2.8.7.4 -30 °F Flooded Head Pressure Control

Charging for flooded head pressure control.

2.10 System Settings and Adjustments

2.10.1 Low/High Pressure Limit Switch

High/low pressure limit switches.

2.10.2 Head Pressure Controls-Air Cooled Systems

Head pressure controls for air-cooled.

2.10.2.1 Condenser Fan Cycling (Condenser Model SCS-AA, 0 °F)

Fan cycling for SCS-AA.

2.10.2.2 Condenser Multi-Speed Fan Switch (Model HES-CAA, 0°F)

Multi-speed fan switch for HES-CAA.

2.10.2.3 Variable Condenser Fan Speed (Condenser Model SCS-SA, -20 °F)

Variable fan speed for SCS-SA.

2.10.2.4 Intelligent Control (Condenser Model SCS-EC Only, -20 °F)

Intelligent control for SCS-EC.

2.10.5 Blower Adjustment

Adjusting blower speed.

2.10.5.1 Belt Drive Blower

Steps for belt drive blower speed change.

2.10.7 Hot Gas Reheat and Bypass

2.10.7 Hot Gas Reheat (Optional)

Operation of the hot gas reheat feature.

2.10.8 Hot Gas Bypass (Optional)

Systems for hot gas bypass control.

2.10.8.1 Snap Acting Hot Gas Bypass

Operation of snap acting bypass.

2.10.8.2 Full Floating Hot Gas Bypass

Operation of full floating bypass.

3.0 Commissioning, Operation, and Decommissioning

3.1 Commissioning the Unit

Steps to prepare and start up the unit.

3.1.1 Commissioning Steps

Detailed commissioning steps.

3.2 Operating the Unit

3.2.1 Shutdown Procedure

Safely shutting down the unit.

3.2.2 Start-up Procedure

Steps for starting up the unit.

3.3 Programming the Thermostat

Thermostat programming.

3.3.1 A-Tech Controller

A-Tech controller features.

3.3.2 E2 Controller

E2 controller overview.

3.4 Decommissioning the Unit

3.4.1 Recovering Refrigerant

3.4.2 Labeling Decommissioned Equipment

4.0 MAINTENANCE

4.1 Periodic General Maintenance

Schedule for periodic maintenance.

4.1.1 A/C Unit Maintenance

4.1.1.1 Compressor

Verifying compressor operation.

4.1.1.2 Heater

Heater inspection.

4.1.1.3 Air Filters

Air filter inspection.

4.1.1.4 Blower

Blower checks.

4.1.1.5 Coils

Coil cleaning and inspection.

4.1.1.6 Drain Pan

Drain pan inspection.

4.1.1.7 Condensate Pump and 4.1.1.8 Humidifier

4.1.1.7 Condensate Pump

Condensate pump inspection.

4.1.1.8 Humidifier

Humidifier cylinder maintenance.

4.1.2 Condenser/Condensing Unit

5.0 PRODUCT SUPPORT

5.1 Factory Authorized Start Up/Warranty Inspection

Benefits of authorized start-up.

5.2 Technical Support

5.3 Obtaining Warranty Parts

5.4 Obtaining Spare/Replacement Parts

Appendix A OHS Preventive Maintenance Inspection Checklist

Appendix B - Acronyms and Abbreviations

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