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(© Oct, 2007)

Compact CW Series Installation, Operation & Maintenance Manual

Air Technology Systems, Inc.

1-1

1.0

INTRODUCTION

1.1

General

Congratulations, the 

Compact CW™ floor mounted

precision air conditioning system covered by this
manual is designed and manufactured by Stulz Air
Technology Systems, Inc. (SATS) using the latest,
state-of-the-art control technology. Recognized as a
world leader, SATS provides air conditioning systems
with the highest quality craftsmanship using the finest
materials available in the industry. The unit will provide
years of trouble free service if installed and maintained
in accordance with this manual. Damage to the unit
from improper installation, operation or maintenance is
not covered by the warranty.

STUDY the instructions contained in this manual.
They must be followed to avoid difficulties. Spare parts
are available from SATS to insure continuous opera-
tion. Using substitute parts or bypassing electrical or
cooling components in order to continue operation is
not recommended and will VOID THE WARRANTY.
Due to technological advancements, components are
subject to change without notice.

All 

Compact CW systems are designed to be installed

indoors, unless otherwise noted on the equipment.

1.2

Product Description

Compact CW systems are designed to be the most
versatile and flexible floor mounted precision air
conditioning systems in the industry. The unit is
available in up-flow or down-flow configurations. The
cooling capacity, in kW, will depend on the unit size,
which can range from 30 to 180 kW, (1 kW = 3415
BTU/Hr). Refer to the unit nameplate to identify the
model number and cooling capacity of your unit.

Compact CW systems operate with an external
source of chilled water. The chilled water system is a
closed loop circuit in which cold water is circulated
through a chilled water coil. On demand for cooling,
the microprocessor controller begins modulating the
chilled water valve open. Chilled water flows to the coil
at a rate that varies proportionally to the amount of
cooling required to meet the user selectable tempera-
ture setpoint. Heat from the surrounding air is trans-
ferred through the finned tubing of the coil into the cold
water. Water is then re-circulated back to the cold
water source.

Compact CW systems have been designed to supply
air to only one room.

NOTE

Compact CW systems are strictly for non-resi-
dential applications.

The functional modes of operation, in addition to
cooling, are heating, humidification and dehumidifica-
tion, which provide complete environmental control of a
conditioned space.

There are two air pattern configurations, upflow and
downflow, and several cabinet sizes based on the type
of system and capacity. Regardless of configuration,
the 

Compact CW system is compact and versatile.

See the Installation drawing provided with the unit for
the layout and dimensions of the cabinet.

The 

Compact CW unit is provided with a factory

mounted, main power disconnect switch with a lockable
handle. The disconnect switch electrically isolates the
unit during routine maintenance. The system incorpo-
rates state of the art component protection with the use
of motor start protectors and circuit breakers.

An operating manual for the system controller is
provided under separate cover. Refer to that manual for
detailed instructions on operating the system control-
ler provided with your unit.

The standard controller for 

Compact CW precision A/C

units sizes CCD/U-300 through CCD/U-900 is SATS
model C1002. For larger units, CCD/U-1500 through
CCD/U-1800, the standard controller is the SATS
model C6000. These microprocessor controllers
provide the following features: input/output monitoring
status, full integrated control of heating, cooling,
humidification and dehumidification; multi-unit control
and remote communication with building management
systems. The controller is typically factory mounted
on the front hinged access door of the unit. As an
option the controller may be remotely mounted to a
wall or control panel.

SATS offers the C6000 microprocessor controller as
an option for models CCD/U-300 through CCD/U-900
A/C units.

C1002

C6000

Summary of Contents for Compact CW Series

Page 1: ...Oct 2007 Compact CW Series Installation Operation Maintenance Manual Air Technology Systems Inc...

Page 2: ...uage 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 This document contains confiden...

Page 3: ...umidity Sensor 2 5 2 6 6 Remote Water Detector 2 6 2 7 Piping Connections 2 6 2 7 1 Chilled Water Hot Water 2 6 2 7 2 Condensate Drain 2 7 2 7 2 1 Gravity Drain 2 7 TABLE OF CONTENTS 2 7 2 2 Condensat...

Page 4: ...Installation Downflow 2 2 Figure 7 Downflow Configuration TypicalAir Patterns 2 3 Figure 8 Upflow Configuration Typical Air Patterns Top Discharge 2 4 Figure 9 Upflow Configuration TypicalAir Patterns...

Page 5: ...il at a rate that varies proportionally to the amount of cooling required to meet the user selectable tempera ture setpoint Heat from the surrounding air is trans ferred through the finned tubing of t...

Page 6: ...nc s warranty does not cover failures caused by improper installation abuse misuse misapplication improper or lack of maintenance negligence accident normaldeterioration includingwearandtear ortheuseo...

Page 7: ...le of supporting the unit When working on electrical equipment remove all jewelry watches rings etc Always disconnect the main power supply to the equipment at the main power disconnect switch before...

Page 8: ...pply air as required to offset the sensible cooling of the system during the dehumidification cycle and for the automatic heating mode As a standard electric resis tance heating elements are factory i...

Page 9: ...ller when a smoke alarm condition exists 1 6 3 Firestat Optionally mounted in the return air stream a fire detector senses high retun air temperature and signals the controller when a fire alarm condi...

Page 10: ...d inside the air conditioner unless specified otherwise by the customer The filter box or plenum box assem bly if applicable is shipped separately Unpack and store these items in a safe place unless y...

Page 11: ...ocated inside or outside the conditioned space but are designed to supply air to only one room The Compact CW systems are front accessible which allows the units to be placed in a corner or between ca...

Page 12: ...as possible The return inlet is provided with a turned in flange on top of the unit for connection of the ductwork Refer to the installation drawing provided with the unit The connection of ductwork...

Page 13: ...TLET RETURN AIR INLET Figure 8 Upflow Configuration Typical Air Patterns Top Discharge SUPPLY AIR OUTLET RETURN AIR INLET FRONT FREE RETURN REAR DUCTED RETURN Figure 9 Upflow Configuration Typical Air...

Page 14: ...nsate pump may be provided for automatically eliminating condensate and humidifier flush water from the drain pan The conden sate pump is typically installed by the factory inside the A C unit If an o...

Page 15: ...educed by the controller The user may also enter a gradient factor for humidity control Formula Newsetpoint oldsetpoint gradient startvalue actual value Example temperature 70 5 70 0 5 61 60 Example h...

Page 16: ...freezing temperatures The diameter of the drain line should be the full size of the connection NOTE Pour some water into the condensate drain pan s prior to start up This fills the trap and prevents...

Page 17: ...tions are required WARNING Verify power is turned off before making connec tions to the equipment NOTE All wiring must conform to local and national elec trical code requirements Use of copper conduc...

Page 18: ...local and national electrical code requirements 2 7 3 1 Remote Temperature Humidity Sensor The remote temperature humidity sensor requires a three conductor shielded cable with the shield terminated a...

Page 19: ...motor see Figure 14 is supplied with an adjustable sheave pulley to change blower speed and an adjustable base for belt tensioning Use the following procedure to change the blower speed 1 Turn the A...

Page 20: ...cylinder is warm to verify if the humidifier is operational In all cases 1 to 6 hours might be required to see a desired level or rise in humidity in the conditioned space Once room conditions have b...

Page 21: ...ing components as automatic con trols may start them unexpectedly 4 1 1 Compact CW Precision A C Unit 4 1 1 1 Filter The filter is usually the most neglected item in an air conditioning system To main...

Page 22: ...A change cylinder light on the humidifier cabinet will illuminate red when the cylinder requires replacement NOTE The red light may illuminate during initial start up but it doesn t necessarily mean...

Page 23: ...Low hot water flow Check hot water flow at supply source Inoperable Inspect piping for leaks or obstructions b Low hot water supply temperature Check hot water supply c Temperature setpoint too low In...

Page 24: ...ing the Auto On Off Drain switch to the Drain position 4 4 3 When drained push the Auto On Off Drain switch to the Off position 4 Turn off power at the main power disconnect switch 5 The power wires t...

Page 25: ...ges If you do not have established credit with SATS you must provide a freight carrier account number A written or faxed purchase order is required on warranty parts and must be received prior to 12 0...

Page 26: ...Oct 2007 Air Technology Systems Inc Compact CW Series Installation Operation Maintenance Manual NOTES...

Page 27: ...ith water 8 Water supply line connected to humidifier if required 9 Safety pan installed under ceiling mounted equipment if required 10 Filter box installed if required 11 Filter s installed if requir...

Page 28: ...Oct 2007 Air Technology Systems Inc Compact CW Series Installation Operation Maintenance Manual...

Page 29: ..._ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _...

Page 30: ...Oct 2007 Air Technology Systems Inc Compact CW Series Installation Operation Maintenance Manual...

Page 31: ...OB Freight on Board HACR Heating Air Conditioning Refrigeration HP Horse Power Hz Hertz IAQ IndoorAir Quality in w g Inches of Water Gauge KVA Kilo Volt Amps kW Kilowatt MAX CKT BKR Maximum Circuit Br...

Page 32: ...Oct 2007 Air Technology Systems Inc Compact CW Series Installation Operation Maintenance Manual...

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