Bosch Appliances manual D7024 Control Terminal Connections

D7024

Control Terminal Connections

4.0Control Terminal Connections

Incorrect connections may result in damage to the unit and personal injury.

CAUTION

Before servicing this equipment, remove all power including the transformer, battery and phone lines.

WARNING

Shared cable is not recommended for option bus, telephone or NAC wiring.

IMPORTANT

	Typical Fire Wiring
	Loop
Input	Power		Loop	Smoke Smoke
	+	Input	Power
				Power	Power
Z-	LP+	Ref.	+	Ref.	+
		Z-	LP+	SMK	SMK
Smoke	2			-	+
Detector

2	Smoke
	Detector

EOL	EOL
Resistor
	Resistor
Typical 2-wire			EOL Relay
	Typical 4-wire smoke
smoke detector
wiring (supervised)		detector wiring.

(for a list of compatible 2-wire	For example:
	a Radionics D285 in a
smoke detectors, see Radionics
	D292 base.
Technogram P/N:34445)

Red	NC
	AC Power 2
	NC
Brown	AC Power 1

	R2
	HR2
	HT2
	T2
	R1
	RH1
	TH1
	T1
unsupervised	Relay 2

For connection to		Contacts
listed power limited
		rated at
Class 2 or Class 3
		5.0 A, 24 V
sources only.
unsupervised		Relay 1
switched	Smoke Power: 24 V, 1.0 A max. (filtered)
supervised	Refer to Technogram P/N: 34445
	for compatible devices.
unswitched	Aux. Power: 24 V, 1.0 A max.
unsupervised	(unfiltered)
	Earth Ground

Input Points 1-4:

(supervised) Points are intended for

connection of Normally Open/ Normally Closed alarm contacts. They may also be used for compatible two-wire smoke detectors.

All EOL resistors are 2.21 k Ω,

P/N: 25899 Radionics

by Detection Systems,UL listed. Initiating devices are Class B, Style B.

Two-Wire Compatibility Identifier “A”.

Supervised, Style 4

Option Power (A + B) 500mA, max

Phone Line 2 (Supervised)

Phone Line 1 (Supervised)

Refer to

Technogram

P/N:34445

Option Bus A Option Bus B

White

(supervised)

Alarm

Silenced

Power

Trouble

			Silence
1	2	3	Reset
4	5	6	Drill
7	8	9	D isable

+12 V Com

Data

Data

+12 V Com

Clear* Prog0 Cmd# Test

All wiring except battery terminal and

History

primary AC power is power-limited.

RA

BA

GA

YA

RB

BB

GB

YB

Primary AC and battery wires must be

Option bus devices may be connected

separated from other wires by at least

IMPORTANT ¼ in. (64 mm) and tied to prevent

to either Bus A or Bus B.

movement.

All option bus devices must be connected to the same bus,

either Bus A or Bus B. Do not connect some devices to Bus A

data terminals (”YA”, “GA”) and some to Bus B data terminals

(”YB”, “GB”). Power (”RA”, “RB”) and ground (”BA”, “BB”)

IMPORTANT terminals may be connected interchangeably to either set of terminals.

(-) (+)

NOTIFICATION APPLIANCE CIRCUIT:

Black

(-)

EOL

NAC 1+ +24 V while in alarm; ground while in standby.

NAC 1- Ground while in alarm; supervisory voltage while in standby.

Red

(supervised)

NOTIFICATION APPLIANCE CIRCUIT:

EOL

NAC 2+ +24 V while in alarm; ground while in standby.

(supervised)

NAC 2- Ground while in alarm; supervisory voltage while in standby.

Black

BATTERIES:

BAT -

Requires two 12 V batteries, in series, for a combined voltage of

Battery # 1

Battery # 2

Red

BAT +

24 V. Charge current = 1.1 A, max.

(+)

Use only indicating devices as listed on Technogram P/N: 34950.

Do not short terminals - explosion and burn hazard.

Battery # 1

Battery # 2

Backup Batteries

WARNING

Figure 5: D7024 Control Terminal Connections

	D7024 Operation and Installation Guide
41740F	Page 22	© 2005 Bosch Security Systems