Lieber 305, 375, 415 Specifications

Liebert® CW Model 305, 375, 415

Liebert® CW Mod el 305, 375, 415

Guide Specificat ions

1.0 GENERAL

1.1 SUMMARY

These specifications describe requirements for a Thermal Management system. The system shall be designed to
control temperature in rooms containing electronic equipment, with good insulation and vapor barrier. The
manufacturer shall design and furnish all equipment to be fully compatible with heat dissipation requirements of
the room.

1.2 DESIGN REQUIREMENTS

The Thermal Management system shall be a Liebert® self-contained, factory assembled unit. Standard 60 Hz
units shall be CSA certified to the harmonized U.S. and Canadian product safety standard, "CSA C22.2 No
236/UL 1995 for Heating and Cooling Equipment" and are marked with the CSA c-us logo.

1.3 SUBMITTALS

Submittals shall be provided with the agreement of the proposal and shall include: Single Line Diagrams,
Dimensional, Electrical and Capacity Data, Piping; and Electrical Connection Drawings.

1.4 SERVICEABILITY/ACCESS

The cabinet shall be designed so that all components are easily accessible for service and maintenance through
the unit's required service access location. No side access shall be required.

1.5 ACCEPTABLE ALTE RNATIVES

Acceptable alternatives shall be permitted with engineer's prior approval only. Contractor to submit a detailed
summary form listing all variations to include size deviations, electrical load differences, functional, and
component changes and savings to end user.

1.6 QUAL I TY AS S U RAN C E

The specified system shall be factory tested before shipment. Testing shall include but shall not be limited to:
Quality Control Checks, Hi-Pot. The system shall be designed and manufactured according to world class
quality standards. The manufacturer shall be ISO 9001 certified.

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Liebert® CW Model 305, 375, 415

2.0 PRODUCT

2.1 FRAME

The unit frame section and fan plenum frame shall be welded, formed sheet metal. They shall be protected
against corrosion using the autophoretic coating process. The unit section and the fan plenum shall be shipped
as two separate sections. The fan plenum shall be field mounted on top of the unit frame section.

2.1.1 AIR SUPPLY CONFIGURATIONS

2.1.1.1 Bottom Discharge

The supply air shall exit from the bottom of the unit.

2.1.1.2 Horizontal Discharge

The supply air shall exit from the front (data hall side) of the unit.

2.1.2 Air Return

The return air shall enter the unit from the top.

2.1.3 Exterior Panels

The exterior panels shall be insulated with a minimum 1-in (25 mm), 1.5 lb. (0.68 kg) density fiber insulation.
The main front panel shall have captive quarter-turn fasteners. The main unit color shall be RAL-7021 (black
gray). The fan plenum shall be painted to match the color of the main unit.

2.1.4 Electrical and Piping Options Panel Location

2.1.4.1 Data Hall or Bottom Discharge, Left Electric Panel

The main unit display and piping connections shall exit from the left hand (data hall side) of the unit.

2.1.4.2 Data Hall or Bottom Discharge, Right Electric Panel

The main unit display and piping connections shall exit from the right hand (data hall side) of the unit.

2.1.4.3 Gallery, Left Electric Panel

The main unit display and piping connections shall exit from the left hand (gallery side) of the unit.

2.1.4.4 Gallery, Right Electric Panel

The main unit display and piping connections shall exit from the right hand (gallery side) of the unit.

2.2 FILTERS

The filter chamber shall be located within the evaporator coil cabinet, and filters shall be removable from the
designated service side of the unit.

2.2.1 Filters, 4-in. MERV 8 or MERV11

Filters shall be deep-pleated, 4-in. (102 mm) filters with an ASHRAE 52.2-2007 MERV8 or MERV11 rating.
Extra Filter Set ____ extra set(s) of filters shall be provided per system.

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Liebert® CW Model 305, 375, 415

2.3 LOCKING DISCONNECT SWITCH

The manual disconnect switch shall be mounted in the high voltage section of the electrical pane l. The swi tch
shall prevent access to the high voltage electrical components until switched to the OFF position.

2.3.1 Dual Locking Disconnect with Reversing Starter and Capacitive Buffer (Optional)

The unit shall be provided with two manual disconnect switches mounted in the high voltage section of the
electrical panel. In addition, the unit shall include reversing starter with ATS (automatic transfer switch)
control. In the event of a loss of primary power, the unit will automatically switch over to a secondary power
source. Upon return of primary power, the unit will automatically return to the primary power source. Also, the
unit shall be equipped with an optional capacitive buffer to provide the Liebert
three minutes of ride-through power. The capacitive buffer shall provide power to the Liebert iCOM control
with embedded Unity functionality for continuous connectivity to Building Management System/Building
Automation Systems (where applicable). This functionality is not available with valve configured for spring
return closed.

®

iCOM™ with a minimum of

2.4 SHORT CIRCUIT CURRENT R ATING (SCCR)

The electrical panel shall provide at least 65,000A SCCR both 60 Hz and 50 Hz units.
Short circuit current rating (SCCR) is the maximum short circuit current a component or assembly can safely

withstand when protected by a specific overcurrent protective device(s) or for a specified time.

2.5 FAN SECTION

2.5.1 Backward Curved Direct Drive Fan with Variable Speed Drive

The fans shall be plug/plenum type, single inlet and dynamically balanced. The drive package shall be direct
drive and provided with variable speed drives (three drives per unit). The fans shall be located in a plenum
above the unit and will blow air over the slab coil to ensure even air distribution and maximum coil
performance. Fan motors shall be nominal 15 hp (11.2 kW) each, with a maximum operating speed of 1,800
rpm; quantity three.

2.5.2 Backward Curved Direct Drive Fan with Variable Speed Drive and Total Harmonic Distortion Device—(Optional)

The fans shall be plug/plenum type, single inlet and dynamically balanced. The drive package shall be direct
drive and provided with variable speed drives (three drives per unit). The fans shall be located in a plenum
above the unit and will blow air over the slab coil to ensure even air distribution and maximum coil
performance. Fan motors shall be nominal 15 hp (11.2 kW) each, with a maximum operating speed of 1,800
rpm; quantity three. An optional passive filter, THD mitigation device is installed behind the unit main electric
panel and wired in series between the main disconnect switch (or reversing starter) and power distribution
block.

2.6 CHILLED WATER CONTROL VALVE

The water circuit shall include a two-way modulating valve. The valve shall be designed for up to 400 PSI
(2,758 kPa) water pressure. Valve close off pressure rating is 100 PSI (689 kPa). The Liebert iCOM shall
position the valve in response to room conditions.

2.7 CHILLED WATER COIL

The chilled water co il s ha ll b e slab design and have ______ sq. ft. (_____ sq. m) face area, _______ rows deep.
It shall be constructed of rifled copper tubes and aluminum fins with a maximum face velocity of _____ ft. per
minute (_________ m/s) at __________ CFM (_________ CMH). A stainless steel condensate drain pan shall
be provided.

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Liebert® CW Model 305, 375, 415

3.0 CONTROLS

3.1 LIEBERT® ICOM™ MICROPROCESSOR CONTROL WITH 7 INCH COLOR TOUCHSCREEN

The Liebert® iCOM™ shall be microprocessor based with a 7-in., high definition, capacitive, color touchscreen
display and shall be mounted in an ergonomic, aesthetically pleasing housing. The display and housing shall be
viewable while the front panel is open or closed. The controls shall be menu driven. The system shall display
user menus for active alarms, event log, graphic data, unit view/status overview (including the monitoring of
room conditions, operational status in percentage of each function, date and time), total run hours, various
sensors, display setup and service contacts. A password shall be required to make system changes. Service
menus shall include setpoints, standby settings (lead/lag), timers/sleep mode, alarm setup, sensor calibration,
maintenance/wellness settings, options setup, system/network setup, auxiliary boards and diagnostics/service
mode. The Liebert iCOM control shall provide Ethernet/RS-485 ports dedicated for BMS connectivity (i.e.,
Base Comms).

• Password Protection—The Liebert iCOM shall contain two unique passwords to protect against

unauthorized changes. An auto hide/show feature allows the user to see applicable information based on
the login used.

• Unit Backup and Restore—The user shall be able to create safe copies of important control parameters.

The Liebert iCOM shall have the capacity for the user to automatically backup unit configuration
settings to internal memory or USB storage drive. Configuration settings may be transferred to another
unit for a more streamlined unit startup.

• Parameter Download—The Liebert iCOM shall enable the user to download a report that lists

parameter names, factory default settings and user programmed settings in .csv format for remote
reference.

• Parameter Directory—The Liebert iCOM shall provide a directory that lists all parameters in the

control. The list shall provide Line ID numbers, parameter labels, and current parameter values.

• Parameter Search—The Liebert iCOM shall have search fields for efficient navigation and parameter

lookup.

• Context Sensitive Help—The Liebert iCOM shall have an onboard help database. The database shall

provide context sensitive help to assist with setup and navigation of the menus.

• Display Setup—The user shall have the ability to configure the Liebert iCOM information based on the

specific user's preference. Language, units of measure, screen contrast, home screen layout, back light
timer, and the hide/show of certain readouts shall be configurable through the display.

• Additional Readouts—The Liebert iCOM sh all permit the user to configure custom widgets on the

main screen. Widget options shall include items such as fan speed, call for cooling, call for free cooling,
maintenance status, call for hot water reheat, call for electric reheat, call for dehumidification, call for
humidification, airflow, static pressure, fluid flow rate, and cooling capacity.

• Status LEDs—The Liebert iCOM shall provide the user with the unit's operating status using an

integrated LED. The LED shall indicate if the unit has an active alarm; if the unit has an active alarm
that has been acknowledged; or if the unit is On, Off or in standby status.

• Event Log—The Liebert iCOM shall automatically store the last 400 unit only events (messages,

warnings, and alarms).

• Service Contact Information—The Liebert iCOM shall have the ability to store the local service or sales

contact information.

• Upgradeable—Liebert iCOM firmware upgrades shall be performed through a USB connection.

• Timers/Sleep Mode—The m enu shall allow various customer settings for turning on/off unit.

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Liebert® CW Model 305, 375, 415

• Menu Layout—The menus shall be divided into two main menu screens: User and Service. The User

screen shall contain the menus to access parameters required for basic unit control and setup. The
Service screen shall be designed for service personal and provides access to advanced control setup
features and diagnostic information.

• Sensor Calibration—The menus shall allow unit sensors to be calibrated with external sensors.

• Maintenance/Wellness Settings—The menus shall allow reporting of potential component problems

before they occur.

• Options Setup—The menus shall provide operation settings for the installed components.

• Auxiliary Boards—The menus shall allow setup of optional expansion boards.

• Various Sensors—The menus shall allow setup and display of optional custom sensors. The control

shall include four customer accessible analog inputs for field provided sensors. The analog inputs shall
accept a 4 to 20mA signal. The user shall be able to change the input to 0 to 5VDC or 0 to 10VDC. The
gains for each analog input shall be programmable from the front display. The analog inputs shall be
able to be monitored from the front display.

• Diagnostics/Service Mode—The Liebert

®

iCOM™ shall be provided with self-diagnostics to aid in
troubleshooting. The microcontroller board shall be diagnosed and reported as pass/not pass. Control
inputs shall be indicated as on or off at the front display. Control outputs shall be able to be turned on or
off from the front display without using jumpers or a service terminal. Each control output shall be
indicated by an LED on a circuit board.

• Base Comms for BMS Connectivity—The Liebert iCOM controller shall provide one Ethernet port and

RS-485 Port dedicated for BMS Connectivity. Provides ground fault isolated RS-485 Modbus, BACnet
IP and Modbus IP network connectivity to Building Management Systems for unit monitoring and
management. Also, provides ground fault isolated 10/100 baseT Ethernet connectivity for unit
monitoring and management. The supported management interfaces include: SNMP for Network
Management Systems, HTTP for web page viewing, SMTP for email, and SMS for mobile messaging.
The iCOM controller can support dual IP on a single network and one 485 protocol simultaneously.

3.2 ALARMS

All unit alarms shall be annunciated through both audio and visual cues, clearly displayed on the screen,
automatically recorded in the event log and communicated to the customer's Building Management
System/Building Automation System. The Liebert iCOM shall activate an audible and visual alarm in the event
of any of the following conditions:

• High Temperature

• Low Temperature

• High Humidity

• Low Humidity

• Fan Fault

• Change Filters

• Loss of Air Flow

• Loss of Power

• Custom Alarms

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Liebert® CW Model 305, 375, 415

Custom alarm inputs shall be provided to indicate facility-specific events. Custom alarms can be identified
with programmable labels. Frequently used alarm inputs shall include:

• Leak Under Floor

• Smoke Detected

• Standby Unit On

Each alarm (unit and custom) shall be separately enabled or disabled, selected to activate the common alarm
and programmed for a delay of 0 to 255 seconds.

3.3 LIEBERT® ICOM™ CONTROL METHODS AND OPTIONS

The Liebert® iCOM™ shall be factory set to allow precise monitoring and control of the condition of the air
entering and leaving the unit. This control shall include predictive methods to control air flow and cooling
capacity based control sensors installed. Proportional and Tunable PID shall also be user-selectable options.

3.3.1 Controlling Sensor Options

The Liebert iCOM shall be flexible in the sense that it shall allow controlling the capacity and fan from multiple
different sensor selections. The sensor se lec tio ns shal l be:

Cooling Capacity

• Supply

• Remote

• Return

Fan Speed

• Supply

• Remote

• Return

• Manual (for diagnostics or to receive a signal from the BMS through Liebert remote monitoring devices

or analog input)

• Static Pressure

3.3.2 Temperature Compensation

The Liebert iCOM shall have the ability to adjust the capacity output based on supply and return temperature
conditions to meet SLA guidelines while operating to highest efficiency.

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Liebert® CW Model 305, 375, 415

3.4 MULTI-UNIT COORDINATION

Liebert® iCOM™ teamwork shall save energy by preventing multiple units in an area from operating in
opposing modes. Teamwork allows the control to optimize a group of connected units equipped with Liebert
iCOM using the U2U (Unit-to-Unit) network. There shall be three modes of teamwork operation:

• Teamwork Mode 1 (Parallel)—Is best in small rooms with balanced heat loads. The controlling

temperature and humidity sensor readings of all units in operation (fan on) are collected to be used for
an average or worst-case sensor reading (user selectable). The master unit shall send the operating
requirements to all operating units in the group. The control band (temperature, fan, and humidity) is
derived and shared among the units in the group. Each unit will receive instructions on how to operate
from the Master unit based on how far the system deviates from the setpoints. Evaporator fans and
cooling capacity are ramped in parallel.

• Teamwork Mode 2 (Independent)—The Liebert iCOM calculates the worse-case demand for heating,

cooling humidification and dehumidification. Based on the greatest demand within the group, each unit
operates independently, meaning that the unit may respond to the thermal load and humidity conditions
based on the units controlling sensors. All sensor readings are shared.

• Teamwork Mode 3 (Optimized Aisle)—May be applied in large and small rooms with varying heat

loads. Optimized Aisle is the most efficient teamwork mode that allows the unit to match cooling
capacity with heat load. In the Optimized Aisle mode, the fans operate in parallel. Fans can be
controlled exclusively by remote temperature or using static pressure with a secondary remote
temperature sensor(s) as an override to ensure that the inlet rack temperature is being met. Cooling
(Compressors, Liebert
conditions. The Liebert iCOM calculates the average or worst-case sensor reading (user selectable) for
heating, cooling humidification, and dehumidification. Based on the demand within the group, units
will be allowed to operate within that mode until room conditions are satisfied. This is the best form of
control for a room with an unbalanced load.

®

Economizer or Liebert® EconoPhase) is controlled off unit supply air

3.5 STANDBY/LEAD-LAG

The Liebert iCOM shall allow planned rotation to keep equal run time on units and provide automated
emergency rotation of operating and standby units.

3.6 STANDBY UNIT CASCADING

The Liebert iCOM cascade option shall allow the units to turn on and off based on heat load when utilizing
Teamwork Mode 3–Optimized Aisle mode with remote temperature sensors. In Teamwork Mode 3, Cascade
mode will stage units on based on the temperature and humidity readings and their deviation from setpoint.
Cascade mode coordinates the fan speed dynamically to save energy and to meet cooling demands. For
instance, with a Liebert iCOM group of six units and only 50% of the heat load, the Liebert iCOM shall operate
only four units at 80% fan speed and leave the other two units in standby. As the heat load increases, the Liebert
iCOM shall automatically respond to the new load and bring on another unit, increasing the units in operation to
five. As the heat load shifts up or down, the control shall meet the needs by cascading units on or putting them
back into standby.

3.7 VIRTUAL MASTER

As part of the robust architecture of the Liebert iCOM control, it shall allow for a virtual master that coordinates
operation. The Virtual Master function shall provide smooth control operation if the group's communication is
compromised. When the lead unit, which is in charge of component staging in teamwork, unit staging, and
standby rotation, becomes disconnected from the network, the Liebert iCOM automatically assigns a virtual
master. The virtual master shall assume the same responsibilities as the master until communication is restored.

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Liebert® CW Model 305, 375, 415

3.8 VIRTUAL BACK-DRAFT DAMPER

The Liebert® iCOM™ shall allow the use of a virtual backdraft damper, eliminating the need for a mechanical
damper. This shall allow the fans of a stand-by unit to spin in reverse at a low speed (15% or less) to act as a
damper.

3.9 WIRED SUPPLY SENSOR

Each Liebert iCOM shall have one factory supplied and connected supply air sensor that may be used as a
controlling sensor or reference. When multiple sensors are applied for control purposes, the user shall be able to
control based on a maximum or average temperature reading.

3.10 SYSTEM AUTO RESTART

The auto restart feature shall automatically restart the system after a power failure. Time delay shall be
programmable. An optional capacitive buffer may be provided for continuous control operation through a
power outage.

3.11 SEQUENTIAL LOAD ACTIVATION

On initial startup or restart after power failure, each operational load shall be sequenced with a minimum of a
one second delay to minimize total inrush current.

3.12 CW QUICK START

Each Liebert iCOM controller shall have the option to enable Chilled Water Quick Start. After a loss of power,
Liebert iCOM application normally requires approximately 60 seconds to reboot prior to the unit providing
airflow and cooling output. With CW Quick Start enabled, the end user may configure a specific airflow output
percentage and cooling capacity output percentage as desired. The unit shall operate at these configured values
within approximately 10 seconds after a power restoration all while the Liebert iCOM application is rebooting .
After Liebert iCOM has fully booted, the unit will continue normal operation.

3.13 ADAPTIVE PID – CW AUTO-TUNING

Liebert iCOM shall support the use of Liebert’s auto-tuning feature called Adaptive PID. Adaptive PID may be
used for fan speed control or cooling capacity control. With Adaptive PID selected, iCOM shall automatically
recognize oscillations across multiple subsystems relating to the PI tuning associated with either mode of
control and correct those oscillations with zero human intervention. This feature allows for better overall system
operation and responds well to increasing/decreasing system load.

3.14 SUPPLY SENSOR AGGREGATION

Each Liebert iCOM controller shall support the Supply Sensor Aggregation feature. Supply Sensor Aggregation
allows for the use of additional remote 2T temperature sensors that are used to calculate an aggregated supply
air temperature value which may be used for cooling capacity control. Each Liebert iCOM controller can
support up to five additional remote 2T sensors for supply sensor aggregation.

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Liebert® CW Model 305, 375, 415

4.0 MISCELLANEOUS OPTIONS

4.1 SMOKE SENSOR—OPTIONAL

The smoke sensor shall immediately shut down the Thermal Management system and activate the alarm system
when activated. The smoke sensor shall be mounted in the electrical panel with the sensing element in the return
air compartment. The smoke sensor is not intended to function as or replace any room smoke detection system
that may be required by local or national codes. The smoke sensor shall include a supervision contact closure.

4.2 CONDENSATE PUMP, DUAL FLOAT—OPTIONAL

The pump shall have a capacity of _______ GPM (_______ l/m) at _______ ft head (_______ kPa). It shall be
complete with integral dual-float switches, pump and motor assembly, and reservoir. The secondary float shall
send a signal to the local alarm and shut down the unit upon high water condition.

4.3 LOW VOLTAGE TERMINAL PACKAGE—OPTIONAL

Factory installed and factory wired terminals shall be provided.

• Remote Shutdown Terminals—Two additional pairs of terminals provide the customer with additional

locations to remotely shut down the unit by field-installed devices or controls.

• Extra Common Alarm Contacts—Two additional pairs of terminals provide the customer with normally

open contacts for remote indication of unit alarms.

• Main Fan Auxiliary Switch—One set of normally open contacts wired to the EC fan motor contactor

will close when EC fan operation is required. This set of dry contacts could also be used to initiate air
economizer operation. Air economizer and associated devices by others.

• Liebert

provide unit shut down. (Liebert Liqui-tect sensor is not included.)

®

Liqui-tect™ Shutdown—One pair of dry contacts for the Liebert® Liqui-tect sensor signal will

4.4 REMOTE HUMIDIFIER CONTACT—OPTIONAL

A pair of N/O contacts provided for connection to a remote humidifier that allow the unit's humidity controller
to control a humidifier outside the unit. Power to operate the remote humidifier does not come from the unit.

4.5 FAN OVERLOAD

The fan fault alarm is standard on all models.

4.6 WIRED REMOTE SENSOR(S)—OPTIONAL

Each Liebert® iCOM™ can have up to 10 2T sensors (20 sensor readings tota l) for control or ref ere nce. As pa r t
of the U2U network, those sensors shall be shared and used to control the cooling units and provide greater
flexibility, visibility, and control to respond to changes in the conditioned space. When the sensors are used for
control, the user may set the control to be based off a maximum or average of a selected highest temperature
reading.

4.7 LIEBERT® LIQUI-TECT™ SENSORS (MAXIMUM OF TWO PER UNIT)—OPTIONAL

____ (quantity) solid state water sensors shall be provided for installation under the raised floor.

4.8 FLOOR STAND—OPTIONAL FOR RAISED FLOOR APPLICATIONS

The floor stand shall be constructed of a welded steel frame. The floor stand shall have adjustable legs with
vibration isolation pads. The floor stand shall be ____ in. (______mm) high.

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Liebert® CW Model 305, 375, 415

4.9 LIEBERT® vNSA NETWORK SWITCH—OPTIONAL

The Liebert® vNSA network switch is designed for networking multiple Liebert® iCOM™ unit level controllers
together. There shall be two different styles of the vNSA14 panel available:

• Liebert

• Liebert

®

vNSA14—Enclosure with network switches only

®

vNSA14-iCOM-H—Enclosure with network switches and 9-in. Liebert iCOM color

touchscreen display

Each offering shall be housed inside a steel enclosure secured with a key lock and contain two network
switches, providing a total of 14 Ethernet ports available for iCOM controller unit-to-unit networking. The
Liebert vNSA requires field supplied, hard wiring, 16AWG, 100-240VAC universal (12V, 1.5A) single phase
input power supply for 120V or 230V operation with factory supplied power connector.

4.10 POWER MONITORING—OPTIONAL

The unit shall be equipped with factory programmed/installed power meters to monitor power characteristics
for either individual component or total unit. These meters allow the user to monitor meter connection status,
input under voltage, input RMS voltage leg-to-leg and leg to ground, input current for each phase, energy
consumption in kilowatt hours, and instantaneous power in watts. In multi-unit applications, a phase loss
protection routine shall place a unit into standby mode in the event that phase loss is detected.

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Liebert® CW Model 305, 375, 415

5.0 EXECUTION

5.1 INSTALLATION OF THERMAL MANAGEMENT UNITS

The customer or the customer's representative shall be responsible for the follow ing:

5.1.1 General

Install Thermal Management units in accordance with the manufacturer's installation instructions. Install units
plumb and level, firmly anchored in locations indicated and maintain the manufacturer's recommended
clearances.

5.1.2 Electrical Wiring

Install and connect electrical devic es furn ish ed by the m anu facturer but not spec if ied to be facto ry mounted.
Furnish copy of the manufacturer's electrical connection diagram submittal to electrical contractor.

5.2 PIPING CONNECTIONS

Install and connect devices furnished by manufacturer but not specified to be factory mounted. Furnish copy of
the manufacturer's piping connection diagram submittal to piping contractor.

5.2.1 Supply, Return, and Drain Water Piping

Connect water supply, water return, and drains to air conditioning unit. Provide pitch and trap as manufacturer's
instructions and local codes require.

5.3 FIELD QUALITY CONTROL

Start cooling units in accordance with the manufacturer's startup instructions. Test controls and demonstrate
compliance with requirements. These specifications describe requirements for a computer room environmental
control system. The system shall be designed to maintain temperature and humidity conditions in the rooms
containing electronic equipment.

The manufacturer shall design and furnish all equipment to be fully compatible with heat dissipation
requirements.

5.4 WARRANTY START-UP AN D CONTROL PROGRAMMING

Install the indoor unit in accordance with manufacturer's installation instructions provided with seismic option.
Firmly anchor maintaining manufacturer's recommended clearances. Mounting requirement details such as
anchor brand, type, embedment depth, edge spacing, anchor-to-anchor spacing, concrete strength, special
inspection, and attachment to non-building structures must be outlined and approved by the Engineer of Record
for the projection or building. Electrical, pipe, and duct connections must permit movement in three dimensions
and isolate the unit from field connections. Electrical conduit shall be flexible, having at least one bend between
the rigid connection at the unit cabinet and the connection to rigid conduit or foundation. The piping flexible
connection or loop must be suitable for the operation pressure and temperature of the system. Furnish copy of
manufacturer's piping connection diagram submittal to piping contractor.

Engage manufacturer's field service technician to provide warranty start up supervision and assist in
programming of unit(s) controls and ancillary panels supplied by them.

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