Greentrol Automation DRI-1000-A User manual
TM_DRI-1000-
A_OEM_R2A.doc
Installation, Operation and
Maintenance Technical Manual
MODEL DRI-1000-A
ENERGY RECOVERY VENTILATOR (ERV) CONTROLLER
WITH COMBINATION ANALOG AND RS-4 5 OUTPUTS FOR
DESICCANT ROTORS INTERNATIONAL – US (DRI-US)
Document TM_DRI-1000-A-OEM
Revision R2A
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LIST OF EFFECTIVE AND CHANGED PAGES
Insert latest changed pages (in bold text); remove and dispose of superseded pages. Total number of
pages in this manual is 56.
Page No Revision * Description of Change Date
1 R2A Added R -485 Output; Changed revision to R2A;............07/01/2011
2 – 4 R2A Updated List of Effective Pages and Table of Contents...07/01/2011
5,7-9, 20-26, R2A Updated content to add R -485 BACnet M /TP..............07/01/2011
32, 37, 51
All others R2A Repaginated and renumbered references as
a result of R -485 changes.................................................07/01/2011
9 R1B Figure 2 replaced with correct mechanical detail...................05/19/2011
1 through 50 R1A Initial document release........................................................ 0 /25/2010
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TABLE OF CONTENT
1. COPE.................................................................................................................................................................... 5
1.1. OVERVIEW........................................................................................................................................................ 5
2. DRI-1000-A PECIFICATION .............................................................................................................................. 7
2.1. Model DRI-1000-A Controller Mechanical Details.............................................................................................. 9
2.2. RH/Temperature Sensor Model GS-2xx-P/RH/T.............................................................................................. 10
2.3. Air Flow Probe Model S-110/01/10................................................................................................................... 11
3. DRI-1000-A FEATURE ....................................................................................................................................... 12
3.1. DRI-1000-A Controller/Display Unit.................................................................................................................. 12
3.2. RH/T Sensor Assemblies................................................................................................................................. 13
3.3. Airflow Probes.................................................................................................................................................. 13
4. IN TALLATION..................................................................................................................................................... 14
4.1. Pre-installation Site Survey and Planning........................................................................................................ 14
4.2. RH/T Sensor Installation...................................................................................................................................15
4.3. Optional Air Flow Probe Installation.................................................................................................................. 16
4.4. ERV Wheel Speed Sensor installation............................................................................................................. 1
4.4.1. Setting the SENSOR TYPE Jumper................................................................................................................. 1
4.5. Controller/Display Unit installation.................................................................................................................... 19
5. Y TEM WIRING AND INTERCONNECTION .................................................................................................. 20
5.1. Power Transformer Selection Considerations.................................................................................................. 20
5.2. DRI-1000-A Wiring Precautions........................................................................................................................ 20
5.3. 24VAC Power Connections.............................................................................................................................. 22
5.4. AOUT1, AOUT2 - Analog Output Connections................................................................................................. 22
5.5. RS-4 5 Network Connections.......................................................................................................................... 23
5.5.1. Setting DRI-1000-A Network Termination......................................................................................................... 23
5.5.2. Setting Transmitter Address............................................................................................................................. 23
5.5.3. Setting MS/TP Baud Rate................................................................................................................................ 23
5.5.4. Setting Device Instance Number...................................................................................................................... 23
5.5.5. Resetting Communications Options to Default................................................................................................. 23
5.6. RS-4 5 Network Connections and Device Settings......................................................................................... 24
5.6.1. BACnet Objects List and Properties................................................................................................................. 25
5.7. ALARM Output Connections............................................................................................................................ 27
5.7.1. Setting the Alarm LED PWR Jumper................................................................................................................ 27
5. . Connecting Sensors to the DRI-1000-A Controller/Display Unit.......................................................................27
5. .1. RH/T Sensor Connections................................................................................................................................ 27
5. .2. Wheel Speed Sensor Connections...................................................................................................................2
5. .3. Air Flow Probe Connections............................................................................................................................. 2
5. .4. Final Inspection/Cable Routing and Management........................................................................................... 2
6. INITIAL TART-UP............................................................................................................................................... 29
7. DRI-1000-A ET UP AND DEVICE CONFIGURATION....................................................................................... 30
7.1. DRI-1000-A SETUP Menu Options and Navigation......................................................................................... 30
7.2. SYSTEM INIT Menu – System Initialization Menu (Restore Factory Default Settings)....................................31
7.2.1. SYSTEM INIT Menu – Factory Default Values................................................................................................. 31
7.3. IP/SI UNITS Menu - System Units of Measurement Menu for IP SYS and SI SYS......................................... 32
7.4. SETUP Menu - System Setup Menu................................................................................................................ 33
7.5. SETUP Menu – Factory Default Values........................................................................................................... 36
7.6. COMM SETUP Menu – RS-4 5 Communications Setup Menu....................................................................... 37
7.7. DIAGNOSTICS Menu....................................................................................................................................... 3
7. . LOCK Menu...................................................................................................................................................... 40
7.9. DRI-1000-A Alarm Set Up.................................................................................................................................41
7.9.1. Programmable Alarm Indications...................................................................................................................... 41
7.9.2. Deadband Alarm - “ALR TYP = DEADB”.......................................................................................................... 42
7.9.3. High Limit Alarm - “ALR TYP = HI”................................................................................................................... 43
7.9.4. Lo Limit Alarm - “ALR TYP = LO”..................................................................................................................... 44
7.9.5. Alarm Hysteresis - “HYS = %”......................................................................................................................... 45
7.9.6. Alarm Polarity – “ALRM POL=NO”................................................................................................................... 45
7.9.7. Trouble Alarm – ALRM TYP=TRBL.................................................................................................................. 45
7.9. . ERV Wheel Speed Rotation Alarm – “ALR TYP=SPEED.................................................................................45
8. NORMAL OPERATING IN TRUCTION ............................................................................................................. 45
.1. DRI-1000-A LCD Display Features...................................................................................................................45
.1.1. Display Hold/Resume Feature.......................................................................................................................... 45
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9. FIELD ADJU TMENT ........................................................................................................................................ 46
9.1. Manual Adjustment of Factory OFFSET/GAIN Calibration............................................................................... 46
9.1.1. Procedure for 1 Point Field Adjustment............................................................................................................ 46
9.1.2. Procedure for 2 Point Field Adjustment............................................................................................................ 47
9.2. *FLOWFIL – Engaging and Adjusting the Digital Airflow Output Filter............................................................. 4
9.2.1. *FLOW BUF – Flow Buffer............................................................................................................................... 4
9.2.2. *INT TIM – Integration Time............................................................................................................................. 4
9.2.3. *INT NUM – Integration Number...................................................................................................................... 4
9.3. *ECO MODE - Setting the Economizer Mode.................................................................................................. 4
9.3.1. ECO1 - Economizer 1 Mode.............................................................................................................................4
9.3.2. ECO2 - Economizer 2 Mode.............................................................................................................................4
9.4. *LL2 – Adjusting the Low Limit Cutoff............................................................................................................... 4
9.5. Adjusting the PID Loop Values......................................................................................................................... 49
9.6. Output Scaling.................................................................................................................................................. 49
10. PRINCIPLE OF OPERATION............................................................................................................................. 50
10.1. System Overview.............................................................................................................................................. 50
10.2. System Firmware Overview..............................................................................................................................52
10.3. System Modes of Operation............................................................................................................................. 53
10.3.1. Summer Mode (OA temperature > 32F)....................................................................................................... 53
10.3.2. Winter (Frost) Mode.......................................................................................................................................... 53
10.3.3. Failure Modes................................................................................................................................................... 53
10.4. LCD Display Indications................................................................................................................................... 54
11. MAINTENANCE.................................................................................................................................................... 55
12. OEM TANDARD LIMITED PART WARRANTY............................................................................................... 56
LI T OF FIGURE
Figure 1. DRI-1000-A ERV Controller System Components........................................................................................... 5
Figure 2. DRI-1000-A Controller/Display Unit Mechanical Detail.................................................................................... 9
Figure 3. RH/Temperature Sensor Mechanical Detail................................................................................................... 10
Figure 4. S-110 Airflow Probe and Universal Bracket Detail Views............................................................................... 11
Figure 5. DRI-1000-A Controller/Display Unit Detail View............................................................................................. 12
Figure 6. RH/T Sensor Detail View................................................................................................................................ 13
Figure 7. Airflow Probe and Universal Bracket Detail View........................................................................................... 13
Figure . Typical S-110 Airflow Probe Placement Detail............................................................................................... 17
Figure 9. DRI-1000-A ERV System Controller Typical Wiring Diagram.........................................................................21
Figure 10. SYSTEM INIT – Initialization Menu Detail.................................................................................................... 31
Figure 11. SYSTEM INIT Menu – Factory Default Values............................................................................................. 31
Figure 12. IP/SI UNITS – Units of Measurement Menu Detail...................................................................................... 32
Figure 13. SETUP – System Setup Menu Detail........................................................................................................... 33
Figure 14. SETUP Menu – Factory Default Values....................................................................................................... 36
Figure 15. COMM SETUP – RS-4 5 Communications Setup Menu Detail.................................................................. 37
Figure 16. DIAGNOSTICS Menu – Sensor and System Status Menu Detail................................................................ 3
Figure 17. DIAGNOSTICS Menu – Menu Item Detail................................................................................................... 39
Figure 1 . LOCK - Menu Detail..................................................................................................................................... 40
Figure 19. Deadband Alarm Example........................................................................................................................... 42
Figure 20. High Limit Alarm Example............................................................................................................................ 43
Figure 21. Low Limit Alarm Example............................................................................................................................. 44
Figure 22. Block Diagram of Typical DRI-1000-A ERV Controller System and DRI ERV System................................51
Figure 23. Functional Block Diagram of DRI-1000-A ERV Controller System Operation.............................................. 52
LI T OF TABLE
Table 1. DRI-1000-A Models and Sensor Configuration Matrix....................................................................................... 6
Table 2. RS-4 5 BACnet Object Properties.................................................................................................................. 26
Table 3. DRI-1000-A Major Menus................................................................................................................................ 30
Table 4. IP/SI Units of Measurement............................................................................................................................. 32
Table 5. Alarm Types and Descriptions......................................................................................................................... 41
Table 6. DRI-1000-A Troubleshooting Guide................................................................................................................. 55
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DRI-1000-A Controller/Display
A
Supply Air RH/T Sensor
GS-213-P/RH/T
(optional)
EX
Exhaust Air RH/T
GS-212-P/RH/T
GS-212-P/RH/T
GS-210, GS-211, GS-212 and (optional) GS-213 Precision RH/Temperature Sensors
RA
Return Air RH/T
GS-211-P/RH/T
GS-211-P/RH/T
Outside Air RH/T Sensor
GS-210-P/RH/T
OA
Optional S-110 OA and EX Airflow Sensors OMRON Type E2F ERV Wheel Speed Sensor (customer provided)
1. SCOPE
This document provides installation, operation, maintenance and technical specifications for the DRI-
1000-A advanced ERV controller. Model DRI-1000-A is designed for specified Desiccant Rotors
International–US (DRI-US) ERV systems.
1.1. OVERVIEW
The DRI-1000-A consists of up to four accurate relative humidity/temperature (RH/T) sensors and a
microprocessor controller with LCD display to process the raw sensor signals and provide a PID loop
output control signal to the host energy recovery ventilation (ERV) system for media wheel speed control.
Both analog and RS-4 5 outputs are available from the DRI-1000-A for interface with virtually all modern
building automation systems. In addition, the Controller will accept up to two model S-110 air flow
sensors for indication of critical outside/exhaust airflows at the enthalpy wheel face. A programmable
alarm feature provides local and remote alarm/notification when outside air flow falls below a preset limit,
or if no enthalpy wheel rotation is detected by the (customer provided) wheel speed sensor in the host
ERV system. The programmable alarm output feature can be set to provide dry relay contacts (N.O. or
N.C.) or direct LED drive current (15 mA typical) for a wide range of alarm interfaces.
The DRI-1000-A is available with optional air flow probes and RH/T sensors as shown in Figure 1. Table
1 lists the system model codes and the sensors/probe complement provided with each model.
Figure 1. DRI-1000-A ERV Controller ystem Components
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Table 1. DRI-1000-A Models and ensor Configuration Matrix
2.
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System Model Controller/Display Unit Air Flow Probes Supplied RH/T Sensors Supplied
DRI-1000-A (1) DRI-1000-A No Air Flow Probes
Supplied
(1) GS-210-P/RH/T (OA)
(1) GS-211-P/RH/T (RA)
(1) GS-212-P/RH/T (EX)
(1) GS-213-P/RH/T (SA)
DRI-1000-A/01A (1) DRI-1000-A (1) S-110/01/10 (For EX) (1) GS-210-P/RH/T (OA)
(1) GS-211-P/RH/T (RA)
(1) GS-212-P/RH/T (EX)
(1) GS-213-P/RH/T (SA)
DRI-1000-A/01A/A (1) GS-210-P/RH/T (OA)
(1) GS-211-P/RH/T (RA)
(1) GS-212-P/RH/T (EX)
(No SA RH/T Sensor)
DRI-1000-A/01B (1) DRI-1000-A (1) S-110/01/10 (For OA) (1) GS-210-P/RH/T (OA)
(1) GS-211-P/RH/T (RA)
(1) GS-212-P/RH/T (EX)
(1) GS-213-P/RH/T (SA)
DRI-1000-A/01B/A (1) GS-210-P/RH/T (OA)
(1) GS-211-P/RH/T (RA)
(1) GS-212-P/RH/T (EX)
(No SA RH/T Sensor)
DRI-1000-A/02 (1) DRI-1000-A (2) S-110/01/10
(For OA and EX)
(1) GS-210-P/RH/T (OA)
(1) GS-211-P/RH/T (RA)
(1) GS-212-P/RH/T (EX)
(1) GS-213-P/RH/T (SA)
DRI-1000-A/02A (1) GS-210-P/RH/T (OA)
(1) GS-211-P/RH/T (RA)
(1) GS-212-P/RH/T (EX)
(No SA RH/T Sensor)
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3. DRI-1000-A SPECIFICATIONS
ystem
Accuracy:
Temperature Accuracy: ±0.6C (1.0 F) @ 25C
Temp. Resolution: ±0.2C (0.36F)
RH Accuracy @25C: ± 2% (20- 0% RH); ±3% (0-20%, 0-100% RH)
RH Resolution: ± 0.4%
Airflow Accuracy: ± 3% of reading typical; ± 4% max from 0 to 2,000 fpm [10.16 m/s]
Operating Temperature:
RH/T Sensors: -20 to 140°F [-2 .9 to +60C]
Airflow Sensor: -20 to 160°F [-2 .9 to 71.1°C]
Controller: -20 to 120°F [-2 .9 to 4 .9°C]
Operating Humidity: 0 to 100% non-condensing
Power Input: 24VAC ±10% (21.6 – 26.4VAC), 10VA maximum
Controller/Display Unit:
Model/Type: Model DRI-1000-A
Description: 32-bit microcontroller with 12 K Flash memory/ 16K RAM and bus speed of 24.576 MHz.
Internal reset circuit and watchdog protection. 12-bit A/D converter with true resolution of
10 bits powered by a +/- 50 ppm voltage reference for accuracy and stability.
Integral 16 character LCD display panel for monitoring system status and for system
setup and configuration via four tactile pushbutton switches.
Internal fault detection circuitry. Board-mounted 'Activity' ED indicating instrument
health/status. CD display indicating system and programmable Alarm status.
RS-4 5 interface for BACnet MS/TP.
Enclosure: Durable UL94V rated electronic housing with removable cover
Dimensions:
(HxWxD)
6.215 x 4.720 x 2.113 in [157. 6 x 119. 9 x 53.67 mm] enclosure;
Overall height with integral 0.535 in [13.59 mm] mounting flanges is 7.2 5 in [1 5.04 mm]
Mounting: Four 0.190 in [4. 3 mm] diameter holes; two on each mounting flange
Relative Humidity/Temperature ensors (requires OA, RA, EX and optional A):
Model/Type: Model GS-210-P/RH/T (OA), GS-211-P/RH/T (RA), GS-212-P/RH/T (EX) and (optional)
GS-213-P/RH/T (SA)
Description: Precision relative humidity and temperature sensing elements with custom
microcontroller and firmware for OA, RA, EX and SA operation and integral proprietary
communication interface with the DRI-1000-A controller.
Enclosure: Durable UL94V rated electronic housing with removable cover
Dimensions:
(HxWxD)
0.94 x 1.17 x 3. 3 in [23. x 29.72 x 97.2 mm] enclosure;
Overall depth with integral mounting flanges is 4.57 in [116.0 mm]
Air Flow ensor Probe (optional for OA and EX air flows):
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Model/Type: Model S-110/01/10
Description: Single sensor airflow probe with bead-in-glass and precision thermistors at each
node and universal adjustable mounting bracket. Waterproof construction with
marine grade epoxy potting compound. A 10 foot plenum rated cable is supplied with
a 5-pin DIN connector (other cable lengths optional).
Sensing Nodes: 1 sensing node per probe; maximum of 2 probes (OA, EX) per controller.
Probe Material: Type 6063 aluminum
Diameter: 0.75 in [19.05 mm]
Length: inch [203.2 mm]
Brackets: Standard adjustable universal mounting brackets included
Enthalpy Wheel peed ensor Input:
Sensor Type
Required:
Customer supplied proximity sensor, Omron type E2F 3-wire NPN/PNP sensor or
equivalent.
Analog Output Performance:
Description: Two independent, non-isolated linear analog outputs, as follows:
Analog OUT1:
(AOUT1)
Uses an optimized PID loop with custom control strategy for VFD ERV motor speed
control in specified DRI ERV systems.
Analog OUT 2:
(AOUT2)
Programmable as either exhaust dry-bulb temperature to dew point differential (TD) or
as OA airflow rate (using an optional OA airflow probe).
Output Range: Selectable 0-10VDC / 0-5VDC / 2-10VDC @20 mA maximum
Resolution: 0.011% of Full Scale (0.022% for 0-5VDC range)
Output Load: 500 min. load (20 mA max.)
R -485 Output Interface:
Description: Non-isolated BACnet MS/TP
Baud Rate: 76. kbps maximum
Alarm Output Interface:
Description: Programmable multi-function alarm with local and remote alarm interface
Alarm Types: 1. Dry relay contacts; 30VDC/24VAC, 3A max; or as direct LED drive (15 mA typ)
2. Local flashing LCD display indicating alarm condition
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3.1. Model DRI-1000-A Controller Mechanical Details
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Figure 2. DRI-1000-A Controller/Display Unit Mechanical Detail
0
BOTTOM END ONLY
2X 0.625 (15. ) DIA
0. 40
(21.37)
0. 40
(21.37)
0.7 5
(19.94)
0
4.33
(110.19)
1.750
(44.45)
6.5 6
(167.2 )
6.100
(154.94)
4.33
(110.19)
2X 0.190
(4. 3) DIA
5.510
(139.95)
6.5 6
(167.2 )
5.510
(139.95)
1.750
(44.45)
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3.2. RH/Temperature ensor Model G -2xx-P/RH/T
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Figure 3. RH/Temperature ensor Mechanical Detail
DRI-1000-A
CONTROLLER
1.17
(29.72)
0.94
(23. )
0.32 ( .13)
0.3 (9.65)
3. 3 (97.2 )
0.94
(23. )
1.1794
(29.72)
0.5 (14.73)
LOCATION
MARKER
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3.3. Air Flow Probe Model -110/01/10
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Figure 4. -110 Airflow Probe and Universal Bracket Detail Views
0. 9 (22.6)
0.1 75 DIA (2 PL)
PROBE CLAMP
0.060 (1.52)
0.475 (12.1)
TOP VIEW
0
0. 75
(22.2)
0.4375 (11.1)
1.1 (27.9)
2.525
(64.13)
3.00
(76.2)
2.11
(53.6)
PROBE
SIDE
VIEW
BRACKET
CLAMP
PROBE
FRONT
VIEW
PROBE CLAMP
304 STAINLESS
WITH EPDM
CUSHION
0.265 DIA
HOLE THRU
0.21 (5.5)
0
0.500 (12.7)
1.06 (26.9)
PROBE CLAMP DETAIL
BRACKET END VIEW
5.00 (127)
4.00 (101.6)
ADJ RANGE
ADJUSTABLE
MOUNTING
HARDWARE
PROBE
PROBE
CLAMP
1.1
(27.9)
3.00
(76.2)
0
0.1 75 (4. )
0.060 (1.52)
SIDE VIEW
4.00 (101.6)
ADJ RANGE
0.25 (6.4)
PROBE
CLAMP
PLENUM
CABLE
SENSOR
PROBE
ADJUSTABLE
MOUNTING
BRACKET
SENSOR
ELEMENTS
0.75
(19)
0
0. 75
(22.2)
0.4375 (11.1)
4.25 (10 )
5.00 (127)
.00 (203.2)
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24VAC
GND
RELAY COM.
RELAY N.O.
AOUT1
GND (AOUT COM)
AOUT2
+VDC
SIG
GND
NET COM
NET -
NET +
DISPLAY
CONTRAST
ADJUST
HUMIDITY SENSOR
CONNECTIONS
ACTIVITY LED
INDICATOR
SPEED SENSOR
CONNECTIONS
SPEED SENSOR
TYPE SELECTOR
MENU/SETUP
CONFIGURATION
PUSH BUTTONS
+VDC
BUS
GND
LCD DISPLAY
FUSE
1 AMP/250V
1A/2AG
INPUT POWER,
ALARM OUTPUT
AND ANALOG
OUTPUT
CONNECTIONS
LED PWR JUMPER
RS-4 5
ACTIVITY LED
RS-4 5
TERMINATION
SELECT
AIRFLOW PROBE
CONNECTORS
RS-4 5
INTERFACE
OA
PROBE
EX
PROBE
4. DRI-1000-A FEATURES
The DRI-1000-A ERV Control system is comprised of a Controller/Display unit, 3 to 4 RH/T Sensors and
optional Airflow Probes depending on model selected as shown in Table 1.
4.1. DRI-1000-A Controller/Display Unit
Figure 5 is a detail view of the Controller/Display unit showing the main circuit board and features. Refer
also to Figure 2 for dimensional details.
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Figure 3. DRI-1000-A Controller/Display Unit Detail View
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ADJUSTABLE
BRACKET FOR
PRECISE PLACEMENT
TO MEDIA WHEEL
FACE
RUGGED 6063
ALUMINUM
CONSTRUCTION WITH
MARINE GRADE
POTTING COMPOUND
TO SEAL
ELECTRONICS.
ADJUSTABLE
HARDWARE PERMITS
FLEXIBILITY IN
PLACEMENT IN
VIRTUALLY ANY ERV
ENCLOSURE
PLENUM RATED
SENSOR CABLE
BEAD IN GLASS AND
PRECISION SENSOR
ELEMENTS
RH/T SENSOR
LOCATION
MARKER
MOUNTING TAB
SENSOR CABLE
RH/T SENSOR
FLOW PORTS
OA
4.2. RH/T ensor Assemblies
Figure 6 is a detail view of the RH/T Sensor assembly. Refer also to Figure 3 for dimensional details.
4.3. Airflow Probes
Figure 7 is a detail view of the Airflow Probe and universal bracket. Refer also to Figure 4 for dimensional
details.
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Figure 5. Airflow Probe and Universal Bracket Detail View
Figure 4. RH/T ensor Detail View
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5. INSTA ATION
Proper installation of the DRI-1000-A ERV Control system is critical to ensure its satisfactory operation.
Read and understand all installation details prior to installing the product. Check-boxes are provided at
each step to assist in verifying installation. While every effort has been made to simplify installation, it is
recommended that these procedures be performed and verified by qualified personnel who are
knowledgeable in DRI-US ERV systems, and experienced in the application and installation of HVAC
ERV control products. Refer any questions regarding installation and operation of the DRI-1000-A ERV
Controller system to your sales representative for resolution.
Refer to the detail views and mechanical dimensions of the DRI-1000-A system components as shown in
Figures 2 through 7.
Installation is organized as follows:
Pre-installation site survey and planning
RH/T sensor installation
Optional S-110 airflow probe installation
ERV wheel speed sensor (customer supplied)
Controller/display unit installation
System wiring and interconnections
5.1. Pre-installation ite urvey and Planning
NOTE:
The DRI-1000-A is designed for specified DRI-US ERV systems, and includes
customized firmware for use with DRI-US model-specific enthalpy media types and sizes.
Installation and operation in other ERV systems is therefore not recommended.
1.Refer to Table 1 for the DRI-1000-A model selected and verify that all components have been
supplied.
2.Refer to the engineer’s drawing for the location of the DRI-1000-A system.
3.Verify that the DRI-1000-A Controller/Display unit location will permit all cables from the sensors,
optional probes, supply power and BAS network to reach the device. In addition, ensure that the
placement of the DRI-1000-A Controller/Display unit will allow visibility of the LCD display and
access to the internal DRI-1000-A for wiring and set up via the four board-mounted push button
switches.
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5.2. RH/T ensor Installation
The DRI-1000-A is supplied with 3 or 4 RH/T sensors (Figure 3) depending on the model selected as
shown in Table 1. The location of the individual RH/T sensors is critical for proper operation of the
system.
CAUTION:
The individual RH/T sensors include location-specific embedded firmware and are each
clearly marked for their intended location in the target ERV system as “OA” (for outside
air chamber); “RA” (for return air chamber); “EX” (for exhaust air chamber), and
(optionally) “SA” (for optional supply air chamber). Installation of the RH/T sensors must
be in the marked location in the ERV system, or improper ERV control will result. Refer
to DRI-US documentation for identification of each of the ERV chambers.
NOTE:
Ensure that the sensing ports on the RH/T sensors are not obstructed when installing
them in the target ERV system. In addition, orient RH/T sensors so that sensor cable
exits downward towards the bottom of the sensor to ensure that any potential cable
condensate will be directed away from the sensor.
1.Refer to DRI-US documentation to identify each of the DRI-US ERV chambers.
2.Remove DRI-US ERV access panels and mark each of the chambers prior to installing the RH/T
sensors.
3.Refer to Figure 3, and using suitable mounting hardware, mount the RH/T sensor marked OA in
the OA chamber through the integral sensor mounting tab. It is recommended that the end of the
cable be marked “OA” with a suitable permanent marker.
4.Refer to Figure 3, and using suitable mounting hardware, mount the RH/T sensor marked RA in
the RA chamber through the integral sensor mounting tab. It is recommended that the end of the
cable be marked “RA” with a suitable permanent marker.
5.Refer to Figure 3, and using suitable mounting hardware, mount the RH/T sensor marked EX in
the EX chamber through the integral sensor mounting tab. It is recommended that the end of the
cable be marked “EX” with a suitable permanent marker.
6.(Optional step for models equipped with SA RH/T Sensors.) Refer to Figure 3, and using suitable
mounting hardware, mount the RH/T sensor marked A in the A chamber through the integral
sensor mounting tab. It is recommended that the end of the cable be marked “ A” with a suitable
permanent marker.
7.Carefully route each sensor cable through DRI-US ERV panels to the intended location of the DRI-
1000-A Controller/Display unit.
.This completes RH/T sensor installation. Proceed to install optional airflow probes (if supplied) in
the following paragraph.
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5.3. Optional Air Flow Probe Installation
Optional model S-110 airflow probes may be included for EX and/or OA airflow measurement depending
upon which DRI-1000-A model is provided (see Table 1). If airflow probes are not included in the model
provided, skip this procedure and proceed directly to ERV Wheel Sensor Installation.
ERV enclosure designs are unique, and specific installation instructions for all ERV systems are beyond
the scope of this document. Airflow probe placement must be carefully determined in the field by the
installer based upon the construction and design of the specific ERV system. When planning airflow
probe installation, the installer must consider routine maintenance of the ERV system, which may require
media wheel removal for periodic inspection, cleaning or replacement as recommended by the ERV
manufacturer. In addition, placement of airflow probes must consider ERV enclosure internal
compartment layout, mechanical/slide clearances and ERV air gasketing to ensure that system efficiency
is not compromised.
Figure shows a typical installation of the airflow probe and the critical dimension from probe edge to
media face for proper operation of the system. For any questions or concerns regarding installation of the
airflow probes, please contact your local sales representative.
Observe the following precautions during installation of the airflow probes:
CAUTION:
Individual OA and EX probes are identical. The model selected will determine the
location of the probe(s) for OA and/or EX air flow, and its connection at the DRI-1000-A
Controller/Display. The OA probe MU T ALWAY be connected to the left-most
connector, and the EX probe MU T ALWAY be connected to the right-most
connector on the DRI-1000-A Controller/Display unit to ensure proper ERV control,
display and alarm functions.
Exercise care when handling the airflow probes. The sensor elements located in the
through-hole openings of the probes are fragile and should not be disturbed. Make sure
that the probe is oriented so that airflow is in the direction printed on the probe label, and
route cable downward (away) from the probe to ensure that any cable condensate will be
diverted away from the probe.
To ensure proper performance of the DRI-1000-A ERV Controller system, maintain the
critical distance guidelines between the face of the ERV media and the airflow probe as
shown in Figure .
Ensure that adequate clearances exist during and after installation to prevent damage to
the ERV system and all moving parts, and to permit future routine inspection and
maintenance of the ERV system and media.
External insulation that interferes with mounting should be temporarily removed prior to
installation.
S110 airflow probes must be installed so that air flows first through the media, and then
through the probe in the direction indicated on the printed label on the probe as shown in
Figure . Do not install probes with airflow in the opposite direction.
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AIRFLOW
ERV ENCLOSURE
S-110 PROBE
ERV WHEEL
INSULATION
TO
DRI-1000-A
CONTROLLER/
DISPLAY UNIT
CRITICAL MEDIA
WHEEL FACE TO
SENSOR PROBE
DISTANCE:
0.50" to 1.00"
(12.7 – 25.4 mm)
The following is general guidance in the installation of the ERV airflow probes:
1.S-110 airflow probes must always be mounted at the face of the ERV system desiccant wheel so
that airflow passes first through the media wheel, and then through the airflow probe in order to
accurately measure the desired airflow. Depending on the location of internal ERV blowers/fans,
measurement of OA or EX flows may therefore require placement in the adjacent flow chamber.
2. Install the supplied universal adjustable mounting brackets as shown in Figures 4, 7 and . The
brackets can be adjusted to suit a wide variety of ERV media wheel enclosure applications.
3. Use suitable hardware in two places on each of the brackets to secure them to the ERV enclosure.
4. Adjust the brackets and probe clamp as shown in details of Figures 4, 7 and in order to establish
0.50 to 1.00 inch (12.7 to 25.4 mm) clearance between the ERV media wheel face and the airflow
probe.
5. Confirm that airflow is in the direction as printed on the S-110 airflow probe body, and that flow is
first through the media and then through the probe.
6. Confirm that the installation will not interfere with the normal operation of the ERV system, and will
permit all future routine maintenance as required by the ERV system manufacturer. Verify that
installed probes and cabling do not interfere with ERV cabinet covers, mechanical slides, etc.
7. Mark the connector end of the OA probe cable “OA” with a suitable permanent marker.
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Figure 6. Typical -110 Airflow Probe Placement Detail
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. Route the OA probe cable to the intended location of the DRI-1000-A Controller/Display unit. The
OA probe connector measures outside airflow stream and will be connected to the left (OA)
connector on the DRI-1000-A Controller unit.
9. Mark the connector end of the EX probe cable “EX” with a suitable permanent marker.
10. Route the EX probe cable to the intended location of the DRI-1000-A Controller/Display unit. The
EX probe connector measures exhaust airflow stream and will be connected to the right (EX)
connector on the DRI-1000-A Controller unit.
11. This completes installation of the optional airflow probes. Proceed to install the ERV Wheel
Sensor as outlined in the following paragraph.
5.4. ERV Wheel peed ensor installation
The DRI-1000-A wheel speed sensor input is specifically designed to accept an Omron type E2F
proximity sensor or equivalent. Refer to the sensor manufacturer mechanical details for the specific
sensor model selected. Proceed to install the sensor as outlined in the following steps:
CAUTION:
The customer supplied sensor must be electrically equivalent to the Omron E2F.
Connection of other sensor types may damage the DRI-1000-A and cause improper
operation
1. Install the wheel sensor at the recommended location using the manufacturer’s mechanical details
for the model selected.
2. Route sensor cable to the intended location of the DRI-1000-A Controller/Display unit.
3. Proceed to set SENSOR TYPE jumper as outlined in the following paragraph.
5.4.1. etting the EN OR TYPE Jumper
The SENSOR TYPE jumper on the DRI-1000-A must be set to match the polarity of the sensor
connected.
1. Refer to the manufacturer’s specifications to determine the sensor output (NPN or PNP type
output), and set the SENSOR TYPE jumper to the matching position (see Figure 5).
2. This completes installation of the customer provided wheel speed sensor. Proceed to install the
DRI-1000-A Controller/Display unit as outlined in the following paragraph.
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5.5. Controller/Display Unit installation
The DRI-1000-A is designed for use in an environment between -20 and 120°F (-2 . and 4 . °C) where
it will not be exposed to precipitation. A NEMA-4 enclosure must be provided to protect the DRI-1000-A in
locations where precipitation may be encountered.
The DRI-1000-A must be installed in a field accessible location with sufficient service clearance to permit
cover removal. The enclosure accepts signal and power wiring at the side mounted terminal blocks, and
optional airflow probes at the bottom of the enclosure as shown in Figure 5. Ensure that the planned
instrument location will allow sensor, probe, power and network wiring to reach the associated
connections on the Controller/Display unit.
CAUTION
In installations that might be exposed to precipitation, the DRI-1000-A must be enclosed
in a NEMA4 enclosure.
Provide sufficient clearance around the DRI-1000-A to permit cover removal.
Locate the DRI-1000-A in a location that can be reached by the connecting signal and
power cables.
Do not drill into the DRI-1000-A enclosure since doing so may damage the electronics.
1. Carefully unpack the DRI-1000-A and inspect for damage. If damage is noted, immediately file a
claim with the carrier.
2. Use the engineer’s plans to locate where the DRI-1000-A will be installed.
3. Refer to Figure 5 and mark the locations of the two mounting holes through the enclosure
mounting flanges.
4. Drill two holes suitable for the hardware that will secure the DRI-1000-A.
5. Secure the DRI-1000-A in two places using suitable hardware.
6. Proceed to connect sensor, probe and power wiring to the DRI-1000-A as outlined in the following
ystem Wiring and Interconnections paragraph.
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This manual suits for next models
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