BAPI VOC Installation And Operating Instructions Manual Download Page 2

Installation and Operating Instructions

VOC Room Sensor in the BAPI-Stat 3 Enclosure 

with Differential Ground Configuration

Building Automation Products, Inc., 750 North Royal Avenue, Gays Mills, WI  54631 USA

Tel:+1-608-735-4800 • Fax+1-608-735-4804 • E-mail:[email protected] • Web:www.bapihvac.com

Specifications subject to change without notice.

29156_ins_voc_room_dif_gnd

2 of 8

rev. 06/05/18

  

Mounting

Mounting hardware is provided for both junction box and drywall 

installation (junction box installation shown).

Note: Screw the 1/16” Allen lock-down screw into the base to open the 

case. There is less chance of losing the screw this way. Back out the 

lock-down screw to secure the cover.

Junction Box

1.  Pull the wire through the wall and out of the junction box, leaving 

about six inches free.

2.  Pull the wire through the hole in the base plate.
3.  Secure the plate to the box using the #6-32 x 5/8 inch mounting 

screws provided.

4.  Terminate the unit according to the guidelines in the Termination 

section. (page 3)

5.  Mold the foam on the unit’s base to the wire bundle to prevent 

drafts. (see note below)

6.  Attach Cover by latching it to the top of the base, rotating the cover 

down and snapping it into place.

7.  Secure the cover by backing out the lock-down screw using a 

1/16” Allen wrench until it is flush with the bottom of the cover.

Drywall Mounting

1.  Place the base plate against the wall where you want to mount the sensor.
2.  Using a pencil, mark out the two mounting holes and the area where the wires will come through the wall.
3.  Drill two 3/16” holes in the center of each marked mounting hole, DO NOT punch the holes or the drywall 

anchors will not hold.  Insert a drywall anchor into each hole.

4.  Drill one 1/2” hole in the middle of the marked wiring area.
5.  Pull the wire through the wall and out of the 1/2” hole, leaving about six inches free.
6.  Pull the wire through the hole in the base plate.
7.  Secure the base to the drywall anchors using the #6 x 1 inch mounting screws provided.
8.  Terminate the unit according to the guidelines in the Termination section. (page 3)
9.  Mold the foam on the unit’s base to the wire bundle to prevent drafts. (see note below)
10. Attach cover by latching it to the top of the base, rotating the cover down and snapping it into place.
11. Secure the cover by backing out the lock-down screw using a 1/16” Allen wrench until it is flush with the bottom 

of the cover.

NOTE:  In any wall-mount application, the wall temperature and the temperature of the air within the wall cavity 

can cause erroneous readings. The mixing of room air and air from within the wall cavity can lead to condensation, 

erroneous readings and sensor failure. To prevent these conditions, BAPI recommends sealing the conduit leading 

to the junction box, filling the junction box with fiberglass insulation or sealing the wall cavity.

Fig 2: 

Mounting to a Junction Box

Summary of Contents for VOC

Page 1: ...o AC Power 0 to 5 VDC Output Units 9 to 35 VDC 50 mA Max 9 to 15 VDC recommended 0 to 10 VDC Output Units 15 to 35 VDC 50mA Max 15 VDC recommended Sensing Elements Humidity Capacitive Polymer 2 RH Accuracy VOCs Micro machined Metal Oxide Temp Sensor Thermistor RTD or Semiconductor Mounting 2 x4 J Box or drywall mount screws provided VOC Detection Range 0 to 2 000 CO2 PPM equivalent Response Time L...

Page 2: ...rywall Mounting 1 Place the base plate against the wall where you want to mount the sensor 2 Using a pencil mark out the two mounting holes and the area where the wires will come through the wall 3 Drill two 3 16 holes in the center of each marked mounting hole DO NOT punch the holes or the drywall anchors will not hold Insert a drywall anchor into each hole 4 Drill one 1 2 hole in the middle of t...

Page 3: ...DC Outputs Termination Note Unit is not ready for operation until the 15 minute start up time has elapsed Fig 3 Circuit Board Note For proper operation the jumper on PRG connector of J19 must be connected by only one leg Optional Test and Balance Switch SW1 Sensor Type Low Temp High Temp 1000 RTD 1 02K 41 2 F 1 15K 101 5 F 3000 Thermistor 7 87K 39 8 F 1 50K 106 8 F 10K 2 Thermistor 30 1K 34 9 F 4 ...

Page 4: ...hree arrow icons are used with the ARW option to show VOC levels and their meaning The main display indicates the numeric value of the quantity being displayed The minor display indicates the engineering units of the value such as VOC F C or RH Temperature Setpoint Slide Pot Moving the slide pot enough to change the setpoint by one degree will display the setpoint on the main display if equipped w...

Page 5: ...ay Information Figs 12 and 13 show how to place the unit into field setup mode to adjust the parameter offsets and display functions shown in Table 1 below Take the jumper from the BNK terminals and place it on the PRG terminals The F C jumper is omitted for clarity The major display should read P1 and the minor display should read DSP Use the UP DN buttons See Fig 14 to select the desired page Pr...

Page 6: ...splay Time in Minutes 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Zero VOC Sensor Acclimation 5 Dynamic Range Estimate Apply Test Gas Undefined Dynamic Range Calculation Adapting to Environment 22 5 Normal Operation Normal Operation Power ON ON Icon Illuminates ON Icon Extinguished Fig 19 Sensor Start up Timeline BAPI s VOC sensor contains an adaptive self adjusting Volatile Organic Compound VOC sensor ...

Page 7: ... at 450 ppm CO2 equivalent Display units will show 450 ppm equivalents B At 15 minutes the VOC sensor will terminate the start up period and begin normal operation C The VOC output will now report the VOCs present as CO2 equivalents 4 Result Analysis and Recommendations A The VOC algorithm requires a dynamic range of greater than 30 for proper operation Sensors reporting a dynamic range of 30 or l...

Page 8: ...connect sensor and check power wires for proper voltage see specs on pg 1 Wait 15 minutes after a power interruption Check all software parameters Determine if the sensor is exposed to an external environment different from the room conduit draft Check all software parameters If available check the sensor against a calibrated instrument such as a hygrometer Determine if the sensor is exposed to an...

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