CCPEOC – Central Chiller Plant Energy Optimization Controller ...

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15 Νοε 2013 (πριν από 3 χρόνια και 7 μήνες)

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ARCTICJACE CCPEOC SPECIFICATION

September 2013, Version 1.2

1

CCPEOC


Central Chiller

Plant Energy Optimization
Controller

Guide Specification


1.1

CCPEOC

DESCRIPTION

A.

The
Central Chiller Plant Energy Optimization Controller,
CCPEOC

or EOC
,

is a
chiller installed or
remotely installed hardware and software control system consisting of a
n open
-
protocol

Niagara Framework

Tridium


JACE platform and
chiller plant
operation software

engineered to
directly
monitor,
control
, stage

and optimize the chiller, its compressors and other connected
mechanical equipment and instrumentation

such as

cooling towers, pumps and valves

to
produce the required
thermal
duty at the lowest possible total kW/ton energy consumption
.


1.2

APPROVED SUPPLIERS

The
c
ontrol
c
ontractor shall use only the manufactur
ers listed below for the

Central Chiller Plant

Energy Optimization Controller
-

ArcticJACE EOC


ARCTIC CHILLER GROUP



Arctic Cool Chillers, Ltd
.

2100 Steeles Avenue East

Brampton, ON Canada L6T 1A7

(905) 789
-
9988


ArctiChill

200 Park Avenue

Newberry, SC 29108

(800) 849
-
7778



1.3

QUALITY ASSURANCE

A.

All
EOC

products
and manufacturer supplied connected devices and systems, and the
components used therein shall be nationally recognized and readily available brands,
new
and
currently manufactured items
.

This provision applies to the central controller hardware and the
Us
er Interface. The use of proprietary controller hardware or interface screen shall not be
acceptable. All
EOC
hardware must be readily available in local and regional industrial and
electrical equipment supply companies.

B.

Codes and Standards:
The Controls
Contractor shall m
eet al
l applicable local and national
standards, practices and codes as well as the

requirements indicated

herein
.

1.

Bear the
UL

Mark

2.

Bear the
ETL

mark

3.

Remote c
ontrol panel
provided shall
be

assembled in a
UL

or ETL Certified
facility.

4.

Hard
ware JACE


All hardware
shall

be open protocol Tridium JACE
using

Niagara
Framework technology. Execution code shall run
live

on
industrial JACE
hardware
. The use
of
SoftJACE or
compiled code
running in MS Windows Embedded
shall not be acceptable
.

5.

The
EOC

shall be designed to natively operate with all major versions of Building
Automation Systems without the use of external protocol translators.




ARCTICJACE CCPEOC SPECIFICATION

September 2013, Version 1.2

2

6.

EOC

Input/Output modules

and interface screens

shall be hardware commonly available

at
supply companies
.
EOC

con
taining proprietary hardware available from a single supplier is
not accepted.



FUNCTIONAL REQUIREMENTS

A.

General Software Requirements

1.

EOC

software

shall monitor and optimize the energy required for chilled water production
using engineered control software approaches as measured in input kW energy at each node
and the total kW of the chilled water plant with all connected components.

2.

The software an
d the user interface functionality shall be designed to provide
complete
operator
control of functions and set points as prescribed in this Specification
.

3.

The Software shall utilize control and wiring in a home
-
run method where each connected
components sh
all be directly connected to terminal blocks of the
EOC
. To facilitate
serviceability and troubleshooting the use of series control loops that connect more than one
controlled node component shall not be acceptable. Only dedicated connections and control
b
etween the
EOC

and the controlled device shall be accepted.


B.

Optimization Functions
: The
EOC

shall control

and optimize

the following
:

1.

Staging and VSD Speed Control of Chillers

a.)

Stage

entire
chillers
in and out of service as required to meet dynamic
building thermal
loads and minimize

the
total kW
required for chilled water production at each chiller
.

Dynamically set chiller sequencing based on load side variations in demand, scheduled
load timing and pull
-
down rate.

b.)

Dynamically adjust chiller sequenc
ing set points based on real time calculation of
compressor
kW
efficiency and
available
operating envelope
at that set of conditions
.

c.)

Dynamically adjust the chilled water temperature set point in response to user dictated
sequences to facilitate energy red
uction when AHU loads are reduced to a prescribed
and controller settable level and to meet demand
-
response requirements, if any.



2.

Staging and VSD Speed of Chilled Water Pumps

a.)

Stage and optimize the rotational speed and energy of connected chilled water p
umps
and their VSD drives to provide adequate flow in the chiller to maintain correct fluid
velocities and avoid laminar flow conditions.

b.)

EOC

shall correlate chiller staging with pump staging and speed and shall automatically
operate chilled water isolati
on valves at any chiller piped in parallel to assure no chilled
water or condenser water mixing occurs during chiller staging sequences and to prevent
excessive fluid velocities in parallel installations.

c.)

Dynamically set

chilled water pump VSD

speed

to mai
ntain

load
-
side AHU differential
pressure corresponding with the dynamic load
.

Continuously
monitor differential
pressure

transmitters installed at load
-
side AHU(s) to correlate chilled water pump
speed

with variations of load
.




ARCTICJACE CCPEOC SPECIFICATION

September 2013, Version 1.2

3



3.

Cooling Tower
Staging and
Co
ndenser Water Pumping

a.)

Utilize ambient temperature and RH sensors to dynamically calculate enthalpy at the
cooling towers.
EOC

shall utilize these values to set cooling tower fan speed and
condenser water pump speed and bypass valve positions to maximize
available outdoor
conditions and dynamically reduce chiller energy.

b.)

Dynamically adjust cooling

tower
staging of multiple parallel cooling towers and VSD
fan
speed

and connected condenser water pumps

to
correlate the optimum condenser
water temperature and flow rate to minimize chiller compressor energy
while
minimizin
g combined total kW of chillers,

fans

and
condenser water

pumps.

c.)

EOC

shall have settable minimum flow rates for condenser water VSD pumps t
o meet
the minimum flow requirements of the flow nozzles of the cooling tower and to assure
complete distribution of condenser water across the tower fill.

d.)

Energy optimization

methods which rely on
simple cooling tower sump temperature and
not enthalpy ca
lculations, or methods than employ simple
chiller
and drive
power input

without adaptive calculation of real
-
time compressor operating envelopes
, including so
-
called “wire
-
to
-
water”, “natural curve” and “Equal Marginal

Performance Principal”
methods

are
no
t accepted
.

EOC

shall have direct communications with the chiller
controller and use the data from each compressor in order to meet this requirement.


4.

Condenser Water Bypass

Valve

Operation

a.)

Dynamically adjust

condenser bypass
valve position to maintain
co
rrect

compressor
head pressure during cold start operations and to assure minimum capacity is met
during energy
-
optimized low condenser water temperature operation.

b.)

EOC

shall have user control settings that define the priority of capacity over energy, or
energy over available capacity and shall automatically protect the compressor from
surge and choke conditions that can be caused by reduced condenser water
temperatures b
y reducing capacity and/or changing chilled water temperature set
points to compensate.
EOC

methods that do not have the ability to correlate real
-
time
dynamic compressor envelopes with bypass valve operation, but rely on simple input
energy to the chiller

shall not be acceptable.



5.

User Interface Requirements

a.)

EOC

shall provide
an industrial
15
” or larger high
-
contrast 16
-
bit color touch
-
screen user
interface using standard non
-
proprietary hardware. The UI shall display and provide
drill
-
down capabilities
for all

current
plant optimization nodes. Valve positions,
component staging, chiller energy and
total
plant kW/ton, set points and current values
from sensors and actuators shall be clearly displayed.

b.)

The interface screen operation shall not be dependent

on the
EOC

controller hardware
so that the
EOC

can operate normally even if the screen is absent or not functioning.



ARCTICJACE CCPEOC SPECIFICATION

September 2013, Version 1.2

4

EOC

systems where the screen and controller are mutually dependent for normal plant
operation shall not be acceptable.

c.)

EOC

shall provide n
ative RJ45 Ethernet capabilities and shall provide LAN based or
Wireless WiFi based secure VPN communications for remote user access and control
using industrial grade DIN mounted and panel wired access point. Access protocols that
rely on Microsoft Window
s runtime layers or that do not provide industrial DIN mount
standard VPN connectivity or require separate VPN access licenses shall not be
acceptable.

d.)

Remote communications that rely on consumer or commercial grade static IP routers or
gateways shall not be acceptable.
EOC

manufacturers shall provide IT support for
Owners to configure secure VPN access and firewall 1:1 Network Address Translation
settings to assure reliable operation and secure remote access.

e.)

Failure of any
EOC

connected
device or
operating
condition
s

that
results in a change in
optimization functions

shall be indicated on the

display
.

To facilitate serviceability and
troubleshooti
ng, all connected devices shall be wired in home
-
run fashion. Systems that
use series BUS loops that contain more than one control or sensing node shall not be
acceptable. An

alarm
condition
shall cause the
EOC
to change registers that can be
monitored by
the building BAS control system
.

f.)

Documentation shall be accessible at the
EOC

interface and shall include at a minimum
Operations and Maintenance Manual, Sequence of Operation and Wiring Diagrams with
final, as commissioned terminal block landing locations

for all connected and separately
run nodes.

g.)

Integrated Compressor Software


The
EOC

shall include an industrial form
-
factor PC
with capability to run Danfoss Compressor Monitoring Software.



1.

SUBMITTALS

a.

The
EOC
hardware including manufacturer supplied
sub
-
systems, drives and periphery
instrumentation shall be presented in a formal Submittal within one week of Order. The
Submittal and related documents

shall be reviewed by the
consulting e
ngineer in a
timely manner

and returned with mark
-
ups or authoriza
tion to
the Manufacturer

or its
authorized representative
.


b.

Component purchasing, factory engineering or fabrication shall not commence until a
signed Submittal authorizing a release for manufacturing is received and accepted.

c.

The
CCPEOC
supplier

shall su
bmit the following within
10
days of contract award:

Hardware Submittals:

1.

Process and Instrumentation diagram showing the controller and
connected pump and fan drives, sensors and actuators that are
connected to

the
EOC

system.

2.

A
system hardware listing

of equipment indicating
unit
quant
ity,
manufacturer, model number

and
component manufacturer’s
technical
data

sheets.




ARCTICJACE CCPEOC SPECIFICATION

September 2013, Version 1.2

5

3.

D
iagrams

of connection points of all hardware devices with

reference
documents

for

power
and control
wiring
with terminal locations
.


ii.

Software Submittals
:

1.

Narrative

s
equence of
o
peration for the
EOC

optimization
control

logic

and the
connected

chillers, pumps and fan energy
nodes

under its
control
.

2.

Basic o
perator instructions with referenced screen images for
EOC

controller, interface s
creen and any control adapters utilized in the
control or communications protocol employed.

3.

Energy analysis

showing the predicted performance in kW/ton and total
projected kW consumption of the CCP across one annualized period
correlating

in 10% increments:



(a)
the
annualized
load profile of the
EOC

thermal requirement

(b)
the
annualized
condenser water temperature profile and

(c)
the CCP equipment
energy profile
including all

EOC

chiller
s

and

drives.

(d) the kW/ton effect of utilizing

chilled water resets at various load
points


4.

The
c
hiller
(s)

performance shall be AHRI Certified at AHRI conditions

and AHRI documents for the chiller(s)

models

chosen shall be provided
showing standard IPLV rating and NPLV performance under the
conditions

prescribed in the Specifications and Schedule
. NPLV
performance shall not be AHRI Certified for performance,
and

be
selected to optimize the
chosen compressor
technology to minimize
total
plant

energy consumption while meeting minimum
system

load
requirements.

5.

A list
and description
of
controller data registers

for use with

the
Building Automation System


1.5 EXECUTION



C.

The
EOC

supplier shall engineer, program and configure components to meet the load profile
requirements of the site while
minimi
zing

component and total
chiller plant energy using
optimized component staging and loading and correlating in real time chiller energy, available
condenser temperature and tower fan drive speed and other dynamic set points.

D.

The
EOC

supplier
shall provide manufacturer supplied hardware to the appropriate Mechanical
and Controls Contractors for installation.
EOC

that are engineered for remote mounting (not
inside the chiller) shall arrive in a NEMA rated ETL or UL enclosure completely assembled

and
wired.
The
EOC

manufacturer shall not be responsible for installation of cables or conduit for
the operation of the
EOC
. All installation tasks shall be the responsibility of site contractors so



ARCTICJACE CCPEOC SPECIFICATION

September 2013, Version 1.2

6

that commissioning of the
EOC

and connected components c
an take place
on one site visit

of
factory personnel.

E.

Upon completion of the installation of the
EOC

hardware and
Manufacturer
Certified
c
ommissioning,
and upon final acceptance

of

the equipment
by the
owner,

the manufacturer
shall
provide

the
services and documentation described below. The Owner shall certify in
writing that the
EOC

operation
is
accepted
and meets Engineers
specification
s
.


1.

EOC

Settings and
Commissioning



The
EOC

shall be
fully
commissioned
, including
verification and
documentation

of the
EOC

settings for

the

operation and
optimization
control sequences of all
EOC

connected chillers, fans, pumps, valves, drives and reset
functions
, to assure all communication nodes and control logic is

functioning in accordance
with
the

submittal.


2.

Project Specific Software


Software
, screen images and documentation

developed
specifically this
EOC

installation
shall
be transferred to the Owner in its source format.

3.

Owner Training and Documentation



The
EOC

supplier shall provide owner’s technical
representative(s) complete training in the use, operation and administration of the
EOC
,
including factory certified instructions regarding the chiller and its controls.

Training shall
take place at the location of
the
EOC

installation and shall be not less than one day in length.
Training shall include in
-
depth understanding of the control methods and settings.


4.

Perpetual
Use
License

for
EOC

software. Use license includes the provision for annual
maintenance and sit
e support fees as applicable.

5.

Electronic files containing

the

EOC

user

programs and
display screen software
,

if any
.

6.

Equipment
warranties for

EOC

and manufacturer
supplied

and
connected components
.

7.

First
-
Year Continuous Commissioning. The
EOC

provider shall provide at no charge to the
Owner monthly monitoring of the installation using the secure VPN internet access
provided. Internet access, RJ45wiring to the panel and/or WiFi SIM cards are the
responsibility of the Owner

and must be in place f
or Remote Continuous Commissioning to
occur. The following services shall be provided with this Service.

a.)

On a monthly basis,
EOC

personnel shall with the Owners on
-
site technician perform
analysis and adjustment of the thermal load profile, component level

energy and staging
and energy optimization settings to assure the
EOC

is operating at intended and peak
performance.

b.)

Analysis of the
chiller and
plant energy usage

versus baseline
.

c.)

Verification of operating sequence

during the previous month staging events
.

d.)

Review of previous month alarm log
s and relevant changes or insights from the logs.

e.)

Dynamic Commissioning Service
, DCS

-

After the initial year, the
EOC

provider shall offer
dynamic system monitoring, including th
e automatic secure remote server
-
based polling
and transfer of all analog and digital values on the
EOC

controller. Owners can
“Subscribe” to a web based service that provide a dashboard of current values, trended
history, and enables automatic
user
-
settab
le
triggers to alert users of changes to any
digital state or analog value. The system shall enable remote access and optional direct
control over register values and settings. This
DCS
service
shall

provide expert oversight
by experienced
EOC

personnel.






ARCTICJACE CCPEOC SPECIFICATION

September 2013, Version 1.2

7

1.2

ACCEPTANCE

AND WARRANTY

A.

Hardware: 18 Month Warranty
-

EOC
hardware

shall be warranted free from defects for a
period of twelve (12) months after date of acceptance, not to exceed 18 months from date of
shipment
. Hardware

failures during
the
warranty
period shall be adjusted, repaired, or replaced
at no charge to the Owner

when installed, configured and used as designed and commissioned.

B.

Software: Ten
-
Year Warranty
-

EOC

software shall be warranted to
operate as designed to
control and energy
-
optimize
commissioned energy nodes

for
ten

years from date of
acceptance.