Honeywell 800 Manual De Usuario

3

66-2069—02

CSA for CLASS I, DIV 2, GROUPS A, B, C, D & T4A

FM 7610/NEMA 4X and CLASS 1, DIV 2, GROUPS A, B, C, D 

& T4A*

SIL 3 “Fit for Use”

IECEx CSA 10.0003 Ex nA IIC T4 Gc

     -40<Ta<85ºC, -40<TA<185ºF

*IP67/NEMA 4/4X rating applies when connector ring is 

properly tightened and cable is UV shielded

CSA (C, US)

FM

1. Read these instructions carefully. Failure to follow them 

could damage the products or cause a hazardous 

condition.

2. Check the ratings given in the instructions and one the 

products to make sure the products are suitable for your 

application.

3. Installer must be a trained, experienced, flame 

safeguard control technician.

4. After installation is complete, check out product 

operation as provided in these instructions.

The 700ACSP and 700DCSP signal processors mount on a 

standard 35mm DIN rail. They snap into place and may be 

released from the rail using a flat screwdriver.

1. Connect a safety ground to the viewing head housing (if 

applicable). A ground screw is provided on the exterior 

of the viewing head housing for this purpose.

2. The viewing head and all associated cable/conduit must 

be at least 12 inches (31 cm) from any source of high 

energy or voltage (for example, igniter equipment).

3. Install a ground wire from the ignition transformer case 

to the igniter assembly.

4. Ensure all igniter wires and cables show no signs of 

wear. Replace any igniter cables or wires that are frayed 

or cracked.

5. The viewing head must be electrically isolated from the 

burner front.

a. Electrical isolation can be accomplished by 

installing an Ultem nipple (R-518-13) or an Ultem 

locking coupler adapter (R-518-PT13 or R-518-

PT13L) in conjunction with a locking coupler (R-518-

CL13-HTG) between the viewing head flange and 

the burner mount.

b. The purge air line should also be isolated from the 

viewing head. This can be accomplished by 

installing any insulating material, for example a 

rubber hose, in between the purge air line and the 

viewing head.

The Model 700ACSP power and relay connections are shown 

in Fig. 1. The AC power supply to the 700ACSP Signal 

Processor passes through a 2A fuse and an inrush current 

limiter.

The Model 700DCSP power and relay connections are shown 

in Fig. 2. The maximum current requirement for each 

700DCSP is 250mA.

In the Model 700 signal processors the flame relay (RF A/B 

ON, OFF, COM) has two sets of FORM C (SPDT) contacts 

and the self-check relay (SC ON, OFF, COM) has one set (Fig. 

1 and Fig. 2). The self-check relay is energized whenever the 

signal processor is powered and is operating normally, 

whether the flame relay is energized or not. Internally, the 

flame relay is wired in series with the self-check relay (not 

shown), which prevents the flame relay from energizing if the 

self-check relay is not energized.

Unique fail-safe circuitry for the self-check and flame relays 

ensure that in the event of any critical component failure 

occurrence, system response will be to de-energize the self-

check relay, which in turn de-energizes the flame relay.

Some of the internal power wiring of the Model 700ACSP and 

Model 700DCSP signal processors is shown in Fig. 1 and 

Fig. 2. Rectifier diodes separate the battery backup input from 

the main power bus until the battery voltage exceeds the 

internal DC voltage plus a diode voltage drop. Resettable 

fuses (shown as resistors with slashes) and conventional 

fuses prevent internal failures from loading the power sources. 

With the Model 700DCSP, if a backup battery is to be used 

with a main power supply, the two power sources would be 

wired as shown in Fig. 2. If no backup battery is to be 

installed, the main power supply can be connected at +26V 

PWR and GND as shown in Fig. 2 or it can be connected to 

the +24V BATT input and GND. It is preferable to use the 

battery connections because it takes advantage of the 

resettable fuse at the battery input; resettable fuses recover 

automatically from a fault within a few seconds after power is 

removed. At the +26V PWR input and its associated GND, 

conventional1A fuses are used because they are able to 

protect against 240VAC being applied by accident (this could 

happen if a Model 700DCSP is installed in a cabinet wired for 

a Model 700ACSP).