DCV-R Retrofit
ITEM NO. _______________
MODEL “DCV-R”
DEMAND CONTROL VENTILATION
WITH SMART READ AND REACT TECHNOLOGY
Standard DCV Control Cabinet
GENERAL SPECIFICATIONS AND DESCRIPTION
Furnish Gaylord Demand Control Ventilation (DCV) with smart read and react technology
Model “DCV-R” as shown on plans and in accordance with the following specifications:
DCV-R SMART READ AND REACT DEMAND CONTROL VENTILATION SYSTEM: The
purpose of a demand control ventilation system is to save energy, reduce operational
costs, and optimize HVAC efficiencies for a commercial kitchen ventilation (CKV) system.
The system modulates based on the equipment operation, activity level and the ambient
room temperature. The system also includes provisions to automatically activate the
exhaust fan complying with IMC 507.2.1.1 and will automatically shut down once daily
cooking operations have ended unless the exhaust fan is manually activated.
The DCV-R Smart Read and React Technology requires multiple resistance temperature
devices (RTD’s) mounted inside the hood canopy section to accurately read and react
to the thermal plume generated from the cooking equipment and the activity level of
the chef to regulate ventilation rates.
Height
The DCV-R System utilizes Gaylord’s patent-pending customizable algorithms that can be
adjusted specifically for the cooking equipment under each hood section. Each algorithm
is set during the commissioning process allowing the system to be fully customized for
each individual cook line providing maximum energy saving for the end user.
The DCV-R Smart Read and React Demand Control Ventilation System shall include:
•
One (1) processor board for each hood section mounted in a DCV Control Cabinet at
the end of the hood or in the kitchen within 50 feet of the hood. Each DCV Control
Cabinet can control up to four (4) exhaust fans and up to six (6) hood sections.
•
A maximum of three (3) resistance temperature devices (RTD’s) will be provided
in each wall hood canopy section. A maximum of four (4) RTD’s will be provided
in each island hood canopy section.
•
One (1) RTD shall be installed in each exhaust duct collar.
•
Multi-conductor cabling to be provided by Gaylord to connect the resistance
temperature device (RTD) sensors in the hood to the DCV Control Cabinet.
•
Each system will include one (1) room ambient temperature sensor per exhaust
fan. The room temperature sensor will work together with the hood resistance
temperature devices (RTD’s) to provide an intelligent read and react process to
minimize exhaust volumes while maintaining capture and containment.
•
A 100% Fan Override button will be provided to send the fan(s) to 100% for five
(5) minutes in the event the user wishes to increase the ventilation rate. The 100%
Fan Override button will be on the face of the DCV Control Cabinet and needs to
be mounted in the kitchen within 50 feet of the exhaust hood by an Electrician.
•
A Fan Start/Stop button will be provided if needed to turn on the exhaust fan(s)
to a minimum set point and turn off the fan(s) when conditions allow. The Fan
Start/Stop button will be on the face of the DCV Control Cabinet and needs to
be mounted in the kitchen within 50 feet of the exhaust hood by an Electrician.
•
Upon hood activation, the controller shall close a set of dry contacts sending the
system to its minimal exhaust rate where a 4 to 20 mA signal will modulate the
exhaust rate between the minimum and maximum set points.
•
Wiring to the Variable Frequency Drives (VFD’s) and/or Building Management
System (BMS) by others.
•
The System will comply with IMC 507.2.1.1.
Exhaust Fan
Start/Stop
Button
100% Fan
Button
Cabinet (Height x Depth x Width)
Number Of
Hood Sections
Height In Inches
1-2
25
3-4
36
5-6
40
Cabinet Depth: 7” or 8”
Note: If the DCV Control Cabinet is recessed mounted, a
1-1/2” stainless steel trim ring (not illustrated) is supplied.
DCV- R
RETROFIT
DCV-R PROGRAMMING SPECIFICATIONS: Gaylord provides a programming specification for the following configurations:
Option 1 Exhaust and Supply fan(s) VFD by Gaylord
Option 2 Exhaust and Supply fan(s) VFD by others. Gaylord will provide a programming specification for other Variable Frequency Drives (VFD’s)
GENERAL NOTES:
1. No substitution of Gaylord components allowed except cables.
2. All motors must be inverter rated as specified in NEMA Std. 1, part 31.
3. Confirm there is access to the top of the hood to install the canopy temperature sensors (RTD’s) and wiring. Contact a Gaylord CSA
Representative for additional details if required.
4. Gaylord CSA is responsible for coordinating high voltage wiring connections, conduit, providing or pulling low voltage wiring, control cable, running of the Gaylord sensor or VFD cabling, and any conduit, ceiling or wall penetrations.
5. Minimum air flows are to be set for a maximum turndown with the Test Balance Technician responsible for any necessary field adjustments
to fan sheaves.
6. ETL Certified to UL 508A, UL 710.
7. Gaylord Operation Maintenance Manuals (O&M’s) are available online at www.gaylordventilation.com.
SEQUENCE OF OPERATION: See Gaylord Technical Manual.
CAPTURE AND CONTAINMENT:
Shall be per ASHRAE STD 154.
CONSTRUCTION:
The DCV Control Cabinet housing shall
be constructed of 300 series stainless
steel with a #4 finish complying with NSF/
ANSI 2-2010. The resistance temperature
device (RTD) exterior shall be constructed
of stainless steel.
ACCEPTANCE & APPROVALS:
DCV System will comply with current IMC
507.2.1.1. The DCV Control shall be listed
to UL 508A. The DCV Control Cabinet
shall be compliant with NSF Standard
No. 2. The sensors shall be ETL Listed
recognized components to UL 710 when
installed in a Listed hood. The VFD drive
assembly, if provided by Gaylord, shall
have an open type industrial control
listing to UL 508A.
Resistance Temperature Devices
(RTD’s)
Resistance Temperature Devices
(RTD’s)
GAYLORD INDUSTRIES
The manufacturer reserves the right to modify the materials and specifications resulting
from a continuing program of product improvement or the availability of new materials.
10900 SW AVERY ST • TUALATIN, OREGON 97062 U.S.A.
PHONE: 800.547.9696 • FAX: 503.692.6048 • email: info@gaylordventilation.com
www.gaylordventilation.com
Form No. DCVR-1112-21921
© Copyright 2012, Gaylord Industries
Litho USA