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QPA63 Series

Technical Instructions

Document No. CM1N1958E-P25

November 21, 2006

/VOC Sensors

QPA63.1 QPA63.2

Description

Sensors designed for sensing indoor air quality in rooms or air ducts; microprocessor-

based units consisting of a selective photo-acoustic CO

sensor and a VOC

sensor

with a heated stannic dioxide semiconductor.

Operating voltage: 24 Vac

Output signals: 0 to 10 Vdc

The QPA63 VOC Sensor can detect any of the following gases:

Alcohol Ethylene Oxide n-Hexane 2

Acetone Formaldehyde n-Patene

Acrylonitriles Hydrogen Propane

Ammonia Hydrogen Sulfide R-11

Benzene Isobutane R12

Carbon Dioxide Methane R123

Carbon Monoxide Methanol R502

Chlorides Methyl Acetate Sulfur Dioxide

Dimethyl Amines Methyl Chloride Vinyl Chloride

Ethane Methyl Ether

Ethylene Methyl Ketone

1. VOC = Volatile Organic Compounds (also called mixed gas)

Application

The QPA63 Series sensors are used in HVAC applications to enhance room comfort

and to optimize energy consumption by providing demand-controlled ventilation.

The sensor monitors the following:

•

concentration as an indicator for occupancy in rooms where smoking is

prohibited.

VOC concentration as an indicator for combustible gases and room odors (tobacco

smoke, body odor, material fumes) in the air.

Siemens Building Technologies, Inc.

Summary of content (11 pages)

PAGE 1
Technical Instructions Document No. CM1N1958E-P25 November 21, 2006 QPA63 Series CO2/VOC Sensors QPA63.1 Description QPA63.2 Sensors designed for sensing indoor air quality in rooms or air ducts; microprocessorbased units consisting of a selective photo-acoustic CO2 sensor and a VOC1 sensor with a heated stannic dioxide semiconductor.
PAGE 2
Technical Instructions Document Number CM1N1958E-P25 November 21, 2006 Application, Continued QPA63 Series CO2/VOC Sensors The sensor can be used as the following: • • Room sensor to measure room air quality. Duct sensor in conjunction with the ARG64 duct mounting kit to measure exhaust air quality. Typical areas of use: • Measuring CO2 and VOC concentration. In party rooms, lounges, exhibition halls, restaurants, canteens, shopping malls, gymnasiums, sales rooms, and conference rooms.
PAGE 3
QPA63 Series CO2/VOC Sensors Technical Instructions Document Number CM1N1958E-P25 November 21, 2006 VOC Output U2 [V] SSEN0006R1 CO2 Output Function, Continued U1 [V] 10 10 8 6 5 4 2 CO2 [ppm] 0 clean air 2000 1600 1200 800 400 0 0 VOC concentration polluted air Legend: U1 Signal voltage at output U1 (VOC) in volts U2 Signal voltage at output U2 (CO2) in volts 1 ppm = 1 part per million Figure 1. Function Diagram.
PAGE 4
Technical Instructions Document Number CM1N1958E-P25 November 21, 2006 The duct mounting kit has been designed to mount the sensor in an exhaust air duct. The kit consists of a two-section plastic housing and an attached metal rod with a clamped-on, adjustable duct-mounting flange. There is an air inlet (three holes) and an air outlet at the bottom of the rod. The sensor mounting plate is installed in the lower part of the housing; the plate corresponds to the mounting plate of the QPA63...
PAGE 5
QPA63 Series CO2/VOC Sensors Commissioning Notes Technical Instructions Document Number CM1N1958E-P25 November 21, 2006 Check the CO2 /VOC sensor functions 30 minutes after applying operating voltage as follows: • • Check the CO2 function: exhale on the sensor. Check the VOC function: touch the sensor with a cotton ball dowsed in alcohol (possibly gas from lighter, without flame). Ventilation should start as soon as the preset switching level of the connected controller is reached.
PAGE 6
Technical Instructions Document Number CM1N1958E-P25 November 21, 2006 Installation Drywall Mounting QPA63 Series CO2/VOC Sensors 1. Place a small screwdriver into bottom of sensor and press in the two locking tabs located in the second air vent to remove cover. 2. Remove sub-base from back of sensor. 3. Using the sub-base (packed with sensor) as a template, mark the hole locations with a pencil. 4. Drill two 1/4-inch diameter holes for plastic wall anchors. 5.
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QPA63 Series CO2/VOC Sensors Technical Instructions Document Number CM1N1958E-P25 November 21, 2006 Installation, Continued 1 2 3 4 5 6 SSENO314R1 4321 8765 Figure 5. 4 × 4-inch Electrical Wall Box Installation. 1 Electrical wall box 4 Adapter mask * 2 Plaster ring 5 Sub-base 3 Wall box adapter * 6 Sensor cover * Included with ARG70 2 × 4-inch Electrical Wall An ARG70 wall plate adapter is required to mount QPA63 Series sensor to a 2 × 4-inch Box Mounting electrical wall box.
PAGE 8
Technical Instructions Document Number CM1N1958E-P25 November 21, 2006 Installation, Continued QPA63 Series CO2/VOC Sensors 1 3 4 5 6 SSENO315R1 4321 8765 Figure 6. 2 × 4-inch Electrical Wall Box Installation. 1 Electrical wall box 5 Sub-base 3 Wall box adapter * 6 Sensor cover 4 Adapter mask * * Included with ARG70 Wiring Diagrams (1) SSEN0007R2 G VOC U1 M (2) (5) CO2 U2 M (4) (3) Figure 7. Wiring Terminals.
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QPA63 Series CO2/VOC Sensors Technical Instructions Document Number CM1N1958E-P25 November 21, 2006 SSEN0321R1 Wiring Diagrams, Continued CO2 VOC U1 B1 G M M U2 1 2 3 4 5 X1 A1 B2 M M G B1 (BN) (GN) (YE) (WH) (GY) Figure 8. ARG64 with QPA63… Wiring Diagram. A1 B1 X1 Duct mounting kit ARG64 CO2 /VOC sensor QPA63...
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Technical Instructions Document Number CM1N1958E-P25 November 21, 2006 Dimensions, Continued QPA63 Series CO2/VOC Sensors A 4.92 (125) 1.08 (27.5) ø1.18 (ø30) 5 4 3 2 1 SSEN0009R2 6 max. 11.61 (295) min. 6.69 (170) 59 (1500) 0.98 (25) 7 B 2.11 (53.5) 4.92 125) ( 8 All dimensions in inches (millimeters) 12.60 (320) 1.65 (42) SEEN0010R2 1 (3 .18 0) 0.20 (5) 3.15 (80) 1.38 (35) 0.69 (17.5) Figure 10. ARG64 Dimensions. 1.18 (30) 2.36 (60) 2.76 (70.2) Figure 11.
PAGE 11
QPA63 Series CO2/VOC Sensors Technical Instructions Document Number CM1N1958E-P25 November 21, 2006 Dimensions, Continued 4.21(107) 4.72(120) 1.17(29.6) 1.1(28) 0.91(23) 0.91(23) 3.29(83.5) TH0513R1 0.33(8.5) 4.21(107) 1.1(28) 1.1(28) 4.72(120) 0.91(23) 0.91(23) TH0512R1 1.64(41.75) 1.64(41.75) All dimensions in inches (millimeters) 1.1(28) 1.1(28) 1.18(30) 1.18(30) 0.04(1) Figure 12. ARG70 Dimensions. Information in this publication is based on current specifications.