Bosch D340 Manual de usuario

Duct smoke housing, 2-wire

D340/D340P

en Installation manual

Duct smoke housing, 2-wire Notices | en 3

Bosch Security Systems, Inc. Installation manual 2017.04 | 7.0 | F.01U.071.685

1 Notices

These instructions cover the installation of the D340 Duct smoke housing and D340P Duct

smoke kit in a fire system supervised by a fire alarm control panel (FACP) or a combination

Burglary/Fire control panel.

Before installing the module, become familiar with the Installation and Operation Guide for the

control panel you are using.

Warning!

Follow these instructions to avoid personal injury and damage to equipment.

Install, test and maintain the module according to these instructions, NFPA codes, local codes,

and the authority having jurisdiction (AHJ). Failure to follow these instructions can result in

failure of a detector to initiate an alarm event. Bosch Security Systems, Inc. is not responsible

for improperly installed, tested or maintained devices.

NFPA72 requires that you perform a complete system wide functional test following any

modifications, repair, upgrades or adjustments made to the system’s components, hardware,

wiring, programming and software/firmware.

Trademarks

All hardware/software product names used in this document are likely to be registered

trademarks and must be treated accordingly.

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2017.04 | 7.0 | F.01U.071.685 Installation manual Bosch Security Systems, Inc.

2 Description

2.1 Overview

The D340 Duct smoke housing is designed to mount to the ducts of heating, ventilation, and

air-conditioning (HVAC) systems to monitor the presence of smoke in the conditioned air. It

operates on a two‑wire loop, and requires a smoke detector head.

Use the housing with the D285DH Duct smoke head (provided separately or with the D340P

kit). The detector is combined with an efficient housing design to sample the air passing

through a duct and detect potentially hazardous conditions. When it detects smoke, the

detector sends an alarm signal to the control panel. The control panel initiates the necessary

action to shut off fans and blowers or to switch to other air handling systems.

Test the system by placing an external magnet on the housing or by turning the D344‑RT’s key

switch to TEST. Reset control requires a 24V supply from the control panel or an external

power supply.

You can reset the detector by shutting down zone power. If your system has a D344‑RT

Remote test/indicator plate, you can reset the system using the key switch.

The D340 includes:

– One housing, power card, and cover assembly

– Two #10-24 x 1 in. machine screws for mounting

– Two #10-24 jack nuts

– One exhaust tube

– Two tube clamps with four screws

– Two foam gaskets

– Two air filters

– One drilling template

– One cover gasket

The D340P also includes a smoke detector head and 1.5ft (0.5m) tube.

2.2 Compatibilities

Bosch Security Systems, Inc. (Bosch) makes no claim either written, oral, or implied that the

D340 Duct smoke housing with its associated D285DH Duct smoke head works with any

control panel other than those listed in the Two‑wire Smoke Detectors Technical Service Note

that covers the following products:

– D285, D285TH, D285DH, D286, D263, D263TH, D263THC, D263THS smoke detectors

– D603, D604, D605 heat detectors

– D340 Duct smoke detector housing

Two‑wire smoke detector compatibility information is available in the documents for this

product on our website (www.boschsecurity.com).

The D340 Duct smoke housing with its associated D285DH Duct smoke head are compatible

with the following accessory products:

Accessory products

Active:

D344-1.5 Sample tube, duct 1.5ft/45.7cm

D344-3 Sample tube, duct 3ft/91.4cm

D344-5 Sample tube, duct 5ft/152cm

D344-RL Remote indicator plate

Duct smoke housing, 2-wire Description | en 5

Bosch Security Systems, Inc. Installation manual 2017.04 | 7.0 | F.01U.071.685

Accessory products

D344-RT Remote test/indicator plate, 24V

D344-TF Duct tube filters, 20pcs

DRA-5 Remote indicator plate, 5V

PAM-4 Relay module, form C, 10A 12/24V

Legacy:*

D306 Remote Indicator Plate

D307 Remote Test and Indicator Plate

SMK-TM Smoke Test Magnet

* Legacy products are not available for purchase.

2.3 Setting the jumpers

For the locations of the tamper jumper and reset jumper on the power card, see the following

figure.

Figure2.1: Jumper locations

1 Power card 2 Tamper jumper

3 Reset jumper

The tamper jumper enables or disables the housing cover tamper switch. When this jumper is

enabled, a trouble is indicated if the cover is removed. The reset Jumper enables or disables

the remote reset (D344-RT keyswitch). The power off reset from the control panel zone

functions normally regardless of the jumper setting.

Notice!

Disable the reset jumper whenever you are not using the D344-RT (D307).

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2017.04 | 7.0 | F.01U.071.685 Installation manual Bosch Security Systems, Inc.

For enabled and disabled jumper positions, see the following figure.

Figure2.2: Jumper settings

1 Disabled 2 Enabled

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Bosch Security Systems, Inc. Installation manual 2017.04 | 7.0 | F.01U.071.685

3 Mounting

3.1 Preparing the duct

Before installing the duct detector, you must verify the duct air flow and velocity. The detector

is designed for use in air handling systems with air velocities between 300ft/min and 4000ft/

min (1.5m/s to 20.3m/s). Check the HVAC engineering specifications to ensure the air

velocity in the duct falls within these parameters. If necessary, use a velocity meter to check

the air velocity in the duct.

3.2 Determining mounting location

To obtain a representative air sample, avoid stratification and dead air space. These

conditions can be caused by return duct openings, sharp turns, connections, or long,

uninterrupted runs. For this reason, place the duct housing in the range of six to ten times the

width of the duct from any uninterrupted run (see the following figure).

Figure3.1: Typical duct detector placement

1 Bend or other obstruction 2 6 to 10 times the width oft he duct

3 Width of duct 4 Return air inlet

The D340 can be mounted in any direction of 90° increments without regard to the air flow

direction (see the following figure).

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2017.04 | 7.0 | F.01U.071.685 Installation manual Bosch Security Systems, Inc.

Figure3.2: Mounting positions

1 Air flow 2 Acceptable mounting positions

3 Unacceptable mounting positions

3.3 Preparing sample tubes

The sample tubes must extend across the width of the duct. The three sizes of sample tubes

are:

– D344-1.5 (1.5 ft [0.46 m])

– D344-3 (3 ft [0.91 m])

– D344-5 (5 ft [1.52 m])

Sample tubes include an end plug that must be installed in the narrow end of the tube (see

the following figure).

Figure3.3: Sample tube

1 Set screw 2 End plug

When using the D344‑1.5 in installations where the duct width is between 12in. (31cm) and

18in. (46cm), cover some of the sample holes. The D344‑1.5 has 19 sample holes, but only

12 are required for normal installations. Depending on the length, you might have to cover

some of the holes with duct tape. Use even spacing when covering the sample holes to allow

an even sample across the width of the duct (see the following figure).

Figure3.4: Covering sample tube holes

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Bosch Security Systems, Inc. Installation manual 2017.04 | 7.0 | F.01U.071.685

1 Place tape over these sample holes

You can combine or cut sample tubes to make different lengths. A sample tube can be a

maximum length of 10ft (3m) or a minimum length of 1ft (0.3m). For example, you can join

a 3ft (1m) and a 5ft (1.5m) to make an 8ft (2.4m) sample tube.

Notice!

Sample tubes must have at least 12 sample holes within the duct. Do not cut a sample tube

to less than 12 sample holes.

Notice!

Sample tubes over 3ft (1m) must be supported at the end opposite the duct detector. The

support hole should be 1in. to 2in. (2.5cm to 5cm) below the entry hole to allow for

possible moisture drainage (see the figure following step 4 of the following procedure).

To combine sample tubes:

1. Remove the roll pin and set screw from one of the sample tubes.

2. Remove the end plug from the other sample tube.

3. Push the flared end over the sample tube you want to lengthen.

4. Align the holes, insert the set screw, and reinstall the end plug. For example, if you want

a 7ft (2m) sample tube, combine a 3ft (1m) sample tube and a 5ft (1.5m) sample

tube. Then cut 1ft (0.3m) from the narrow end to get the necessary length.

Figure3.5: Support hole position

1 1in. to 2in. (2.5cm to 5cm)

5. Seal the gap between duct and sample tube. You can remove up to 6in. (15cm) from the

D344‑1.5 for 1ft (0.3m) duct installations.

3.4 Mounting the detector

1. Locate the D340 mounting template and remove it from its backing. Place the template

over the desired location on the duct (see the following figure).

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2017.04 | 7.0 | F.01U.071.685 Installation manual Bosch Security Systems, Inc.

Figure3.6: Mounting template placement

1 Duct 2 Mounting template

3 16.70in. (40.8cm) 4 Two 0.375in. (9.5mm) holes for

mounting the housing to the duct

5 Two 1.75in. (45mm) diameter holes

for the sample tubes

6 6.5in. (16.6cm)

2. Drill out the required holes and remove any remaining debris.

3. Remove the template.

4. Place a #10‑24 jack nut (see the following figure) in each of the 3/8in. (9.5mm) holes.

Figure3.7: Jack nuts

5. Insert the #10-24x1in. machine screws into the jack nuts and firmly tighten. This

attaches the jack nuts to the duct. You might have to hold the jack nuts with a installer

wrench or a pair of pliers while tightening the screws to stop the jack nut from spinning

in the hole. Remove the screws for later use.

6. Place the two foam gaskets over the sample and exhaust ports on the back of the housing

(see the following figure).

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