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Accessing the internal humidity sensor AES1-HT-Ax

MAINTENANCE

1.  With a Phillips-type screw driver of size #2, un-tighten the front holding 

screw to loosen the front part to the mounting plate. This screw is located 
on the front lower side of the unit. (TCI models only).

2.  Locate the notch in the bottom of the front cover. Using the screw driver, 

carefully lift the front cover until the cover loosens from the mounting-plate.

3.  Slide the front cover off to expose the circuit board and pins for the AES1-

HT-Ax sensor. See Figure 22-1.

4.  If present, slide the existing AES1-HT-Ax out of the pins and replace with a 

new one. 

5.  Follow the installation instructions starting on Page 10 to put back 

together.

6.  Change parameters according to Table 21-1.

FIGURE 22-1: ACCESSING THE INTERNAL HUMIDITY SENSOR

OM-8133

22

DRISTEEM TCI AND TRI2 HUMIDISTAT INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

Summary of Contents for Humidistat TRI2

Page 1: ...Humidistat Model TCI W11 U H TCI W11 U Model TRI2 with BACnet Humidistat Installation Operation and Maintenance Manual Read and save these instructions DRISTEEM HUMIDISTATS...

Page 2: ...nergized electrical circuits can cause serious injury from electrical shock Disconnect electrical power to the humidifier before starting installation CAUTION 1 Do not set humidity higher than recomme...

Page 3: ...ters 12 BACnet communication with DriSteem humidistats 13 Configuration of BACnet humidistat devices 15 Object list 17 Description of available objects 20 Model TRI2 BACnet humidistat parameters 21 MA...

Page 4: ...humidity display default 0 and 100 Calibrate sensor Tune the PI control loop Enable security to prevent user from changing parameters Convert between Fahrenheit or Celsius display Change BACnet commun...

Page 5: ...play value of humidity Either room humidity or duct humidity Right Option Parameter setting ENTER to select menu option accept parameter change FIGURE 5 1 USING THE DRISTEEM MODEL TCI HUMIDISTAT DISPL...

Page 6: ...value of humidity Either room humidity or duct humidity Right Option Parameter setting ENTER to select menu option accept parameter change FIGURE 6 1 USING THE MODEL TRI2 BACNET DRISTEEM HUMIDISTAT D...

Page 7: ...1 Repeatability 0 1 Stability 0 5 year Signal Outputs Analog output Output signal DC 0 to 10V 0 to 20mA Resolution 9 76 mV 0 019 mA Maximum load Voltage 5k Current 250 1k Insulation strength between...

Page 8: ...3 X 72 mm 0 6 X 4 5 X 2 8in Power case 50 x 50 mm 2 0 x 2 0 RoHS compliant according to 2011 65 EU Weight including package 253 g 8 9 oz 184 g 6 5 oz Network Hardware interface RS485 in accordance wit...

Page 9: ...m 2 84 72 mm FIGURE 9 2 TRI2 HUMIDISTAT DIMENSIONS SPECIFICATIONS Dimensions OM 8131 2 3 59 mm 1 38 35 mm 0 5 13 mm 2 1 54 mm 0 6 15 mm 2 64 67 mm 2 0 50 mm 2 4 60 mm 0 6 15 mm 4 4 113 mm 2 4 60 mm 2...

Page 10: ...art into the hooks at the upper side of the mounting plate 5 Carefully lower the front part until the interconnector reaches the mounting plate Continue pressing in a gentle way until the front part i...

Page 11: ...ND Ground 1 1 V 24VAC 21VDC 2 2 AO1 Control output 3 3 UI6 Duct sensor input 10 BACnet 5 5 BACnet 6 6 INSTALLATION FIGURE 11 1 TRI2 WIRING DIAGRAM OM 8132 TRI2 wiring diagram 11 DRISTEEM TCI AND TRI2...

Page 12: ...immediately 8 Select the parameters with the UP DOWN buttons Change a parameter by pressing the RIGHT button Arrows 8 to 10 show up and indicate that the parameter may be modified now Use UP or DOWN...

Page 13: ...applications which are monitored by a BACnet MS TP network Table 13 1 Supported BACnet Interoperability Blocks BIBB The BACnet interface conforms to the B ASC device profile BACnet Application Specif...

Page 14: ...PPORTED STANDARD OBJECT TYPES Device Analog input Analog value Binary value Multi state Value LED INDICATORS The BACnet interface features a green LED and a red LED for indication of traffic on the RS...

Page 15: ...arrows are displayed to indicate that the parameter may be modified Use UP DOWN buttons to adjust the value 7 After you are done press OPTION to save the new value and return to the selection level a...

Page 16: ...aud rate which is supported by the AEX BAC The baud rate detection mode will be entered once at hardware start up and after a prolonged communication failure 2 Auto increment function When this functi...

Page 17: ...led by firmware a number of loops b number of passive inputs c number of universal inputs d number of binary outputs e number of analog outputs String R Number_of_APDU_Retries Number of retransmission...

Page 18: ...ber String R Description Description of the input 16 Bytes R W 1 Preset_Value Current value of input writable only if out of service is set Floating Point R W 2 Status_Flags In_Alarm Fault Overridden...

Page 19: ...Description of the input 16 Bytes R W 1 Preset_Value Unsigned Integer 8bit R W Status_Flags In_Alarm Fault Overridden Out_Of_Service Flags R Event_State Always NORMAL Flags R Out_Of_Service Writing to...

Page 20: ...6 16 bytes Duct RH R AV 106 UI 06 OS Universal Input 06 Offset 16 bytes Duct RH Offset R W Alarms MV 601 AL 01 Alarm 1 Not Active Active Need confirmation 16 bytes Hi Low Input R W 1 Control Loops AV...

Page 21: ...N OFF ON 0 10V 0 20mA OFF 2 10V 4 20mA ON 1A 03 Minimum limitation of output signal default and in loop heating mode 0 100 0 1A 04 Maximum limitation of output signal default and in loop heating mode...

Page 22: ...carefully lift the front cover until the cover loosens from the mounting plate 3 Slide the front cover off to expose the circuit board and pins for the AES1 HT Ax sensor See Figure 22 1 4 If present...

Page 23: ...imits Output will cease Troubleshooting and replacement parts TROUBLESHOOTING AND REPLACEMENT PARTS Table 23 2 Replacement parts Model Description Part Number TRI2 HUMIDISTAT CONTROLLER BACNET DUCT 0...

Page 24: ...and are filed for trademark registration in Canada and the European community Product and corporate names used in this document may be trademarks or registered trademarks They are used for explanatio...

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