Siemens QFA3212.FWxN, QFA32SS.FWxN, FA3212.EWxN, QFA32SS.EWxN, FA3232.EWxN Installation Instructions Manual

Installation Instructions

Series

2200 and 3200 Relative

Humidity

and Temperature Room Units

CAUTION

Docume nt No. 129-104

Decemb er 11, 2017

Product Description

These room units measure relative humidity and
temperature in the occupied space in which they are
install ed. Models wit h display allow users to view the
measured temperature value. A version with
temperature setpoint adjustment is also off ered.

The effective sensing range is 32°F to 122°F (0°C to
50°C), and the setpoi nt range is 55°F to 95°F (13°C
to 35°C). The humidity measuring range is 0 to
100% RH.

Hardware is included for installation on drywall or on
a 2” × 4” electrical box.

Product Numbers

QFA3212.FWxN QFA32SS.FWxN
QFA3212.EWxN QFA32SS.EWxN
QFA3232.EWxN

Accessories

AQA2200-INTL Room Unit Back Plate

(10-pack)

563-102 GSKT KIT Room Sensor Insulating

Gasket (10-pack)
(For hollow wall installations)

Expected Installation Time

20 minutes

Required Tools

• Sizes 1 and 2 Phillips screwdrivers

• Small and medium flat-blade screwdrivers

• 1/16-inch hex key

• Medium-duty electric drill

• 3/16-inch (4.8 mm) drill bit

• One-inch (25 mm) hole saw

• Small level

• Tape measure

• Marker or pencil

Prerequisites

• Review these instructions before beginning.

• Installed: appropriate field wiring within the

maximum wiring run length for the individual
equipment controller. The maximum
recommended length is 750 feet (229 m) for
18 AWG; 300 feet (91 m) for 22 AWG.

• All wiring must comply with National Electric
Code (NEC) and local regulations.

Caution Notations

Equipm ent damage or l oss of
data may occur if you do not
follow a procedure as
specified.

Item Number 129-104, Rev. JA

Figure 1. Typical Temperature Room Unit.

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Document No. 129-104
Installation Instructions
December 11, 2017

Mounting Information

Always mount the room unit vertically.
Locate the room unit:

• according to design specifications and local
regulations.

• where the air circulates around it freely (not in
recessed areas or behind doors).

• allowing a minimum of 4 inches (10 cm) free
space above and below for proper airflow, the
front cover removal tool, and the computer
communicati on cabl e.

• away from drafts caused by doors, windows,
outside walls, air registers, pipes, return air
plenums, etc.

• away from heat sources such as strong lights,
fireplaces, direct sunlight, etc.

• on an inside wall (preferably), about 5 feet
(1.5 m) above the finished floor, or per code
(ANSI, ADA, or local regulation).

Drywall Mounting (No Rough-in),
Typical

Base Plate Mounting and Wiring

1. Mark the center (cable) hole and the mounting hole
locations, using t he room unit base plate as a
template. See Figure 3.

Figure 2. Insulating Gasket.

4. Pull about three inches (75 mm) of the cable through
the hole in the base plate.

5. Mount the room unit base plate on the wall, noting
the UP arrow:

NOTE: If required, position the back plate behind

the room unit base, aligning the top and
bottom mounting holes, prior to mounting
to the wall:

a. Install the two mounting screws prov ided, but

do not tighten.
b. Level the room unit base plate for appearance.
c. Ti ghten the two mounting screws to the room

unit base plate.

6. Cut the cable, leaving about three inches (75 mm)
on the room unit side of the drywall. Ensure that pin
Number 1 connects to the same wire at each end of
the cable.

2. Drill two 3/16-inch (4.8 mm) mounting holes and
mount the two plastic wall anchors flush to below the
wall surface for stable mounting of the device.

3. Cut a 1-inch (25 mm) center hole with a hole saw.

NOTE: It is recommended that you use the

optional Insulating Gasket* on the back
of the Unit Base for hollow wall
install ati ons.

When applying the adhesive-backed
gasket to the back of the unit base, orient
the gasket so that the cut-out arrow
portion of the gasket is in the upper
lefthand quadrant of the unit base. The
sensor base has an UP arrow mol ded
into the surf ace in the same quadrant
location (see Figure 6).

*Insulating gasket s are sold in 10-packs
(Part Number 563-102 GSKT KIT).

Page 2 of 4 Siemens Industry, Inc.

NOTE: See Figure 2 for details on optional Gasket

application.

Figure 3. Drywall Mounting (No Rough-in), Typical.

7. Terminate the wires to the termination blocks on the

CAUTION:

room unit's base plate. (See Figure 6.)

8. Feed the extra cable back through the hole.

Unit Set-up

Figure 4. Circuit Board

(Located inside Room Unit Cover.

1. If the device has a switch, determine if voltage or

current output is needed.

Document No. 129-104

Installation Instructions

December 11, 2017

Figure 5. Changing Display to °C.

3. Snap the room unit cover to the room unit base plate
by first hooking the room unit front to the top latches,
and then rotating the cover downward until it latches.

4. Loosen the safety set screw at the bottom of the
base one or two revoluti ons to lock the cover to the
base. Be careful not to loosen too far as the screw
can be completely removed from the base.

Electrical Box and Rough-in
Mounting, Typical

• For current, set t he switch in the down position
(I).

• For voltage, set the switch in the up position (V).

NOTE: The output setting applies to all outputs

(humidity, t em perature, and setpoint).

2. If selecting voltage, set the jumper:

• Use the top and middle pins for 0 to 5V.

• Use the bottom and mi ddle pins f or 0 to 10V.

NOTE: If the jumper is missing or removed, the

output voltage will default to
0 to 10V.

NOTE: The factory default for displayed temperature

units is °F. To change the display to °C, snip the
wire jumper (0 Ohm resistor R64) on the back of
the PCA.

1. If a locator is attached to the rough-in device,
remove the locator by removing the two screws and
lightly rocking the locator to pull it free.

2. Untie the twist tie and pull about three inches
(75 mm) of the room unit cable through the hole in
the base plate.

3. Mount the room unit base plate on the wall, noting

the UP arrow:

a. Install the two room unit mounting screws

provided, but do not tighten.

b. Level the room unit base plate for appearance

only.

c. Ti ghten the two mounting screws to the room

unit base plate.

Over-tightening may cause the room unit
base plate to crack or bend.

4. Continue with Drywall Mounting (No Rough-in),

Typical, Steps 6 through 8, and Unit Set-up.

Page 3 of 4

Document No. 129-104

CAUTION:

CAUTION:

Units with Blank Fr ont

Units with Displa y

Installation Instructions
December 11, 2017

To prevent equipment dam age, do the
following:

If the room unit is powered by AC:

• AC Supply must be type NEC Class 2
and earth grounded at the secondary
neutral.

• Room Unit ACN (GND) must be
con nected to the controll er common.

• If the controller has a floating common,
that common must be connected to the
same earth ground point as the controller
AC supply.

If the room unit is powered by isolated
DC:

• Where power is current limited up to 300
mA, it is not required to earth ground the
controller isolated common.

Figure 6. Typical Wiring Base.

(All terminals may not be present.)
Pin No. Function

• Room Unit DC-(GND) must be connected

to the controller common.

Follow manufacturer’s Installation
Instructions and Wiring Guidelines for
connecting the controller to the Room
Unit.

For Siemens Controll ers:

• APOGEE Controllers with common already
earth grounded are TXIO used on PXC
Modular, PXC Compact 36 Expansion and
P1 BIM or PTM used on MBC and RBC.
These do not require the earth ground wire
to be connected to the controller.

• APOGEE Controllers with floating common

are PXC Compact 16/24/36, MEC, PXM,
LON TEC and PPM. These require the
earth ground wire to be connected to the
controller.

1 DC+ or ACH
2 DC- or ACN (GND)
3 Temp Output
4 Humidity Output
5* Passive Temp
6* Passive Temp Common

1 DC+ or ACH
2 DC- or ACN (GND)
3 Temp Output
4 Humidity Output
5* Passive Temp
6* Passive Temp Common
7 Setpoint Out put
8 Override
9 Override Common

* Not available on “SS” models.

NOTE: If active temperature (0 to 5V/0 to 10V/4 to

20 mA) (Pin 3) rather than passive/resistive
temperature is used, Passive Temp Common
(Pin 6) does not need to be termi nated.

The install ation is now complete.

Information in this publication is based on curr ent specifications. The company reserves the rig ht to make changes in specifications and models as
design i mprovements are introduced. APOGEE is a r egistered trademark or Siemens Industry, Inc. Other pr oduct or company names mentioned herein
may be th e t rademarks of their respective owners. © 2017 Siemens Industry, Inc.

Siemens Industry, Inc.

Building Technologies Division
1000 Deerfield Parkway
Buffalo Grove, IL 60089
USA
+ 1 847-215-1000

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Document No. 129-104

Printed in the USA

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