Honeywell S7999B Manual De Usuario

65-0303—05

10

4. Drill 3/16 in. holes for mounting the display.

5. Secure the OI Display to the panel using the four #6-32 

screws and nuts, as shown in Fig. 10. (Standoffs are pro-

vided for mounting the OI Display from the back of the 

door.)

1. Select a location inside the enclosure for mounting the 

power supply.

2. Using the power supply as a template, mark the loca-

tions of two mounting holes in the enclosure.

3. Remove the power supply.

4. Drill 1/4 in. holes through the panel at the marked loca-

tions and secure the power supply with the two #6-32 

screws and nuts provided.

The S7999C OI display must be appropriately wired for both 

power and communications.

1. Wire the power supply and the RS-485 communication 

cables per Table 2 and the wiring diagram in Fig. 11.

• Y and G are connected directly to the display and 

either SOLA Control connector J3 Modbus (MB1) or 

Modbus (MB2).

2. Make sure the 12 Vdc power supply (supplied with the 

S7999C) is connected securely to the 120 Vac power 

source.

Line voltage is present at the power supply.

M29868

SPACER (4)

WALL

CUTOUT

OPTIONAL
CUTOUT

Y

Data (-) Output (Modbus b)

+

12Vdc input

-

12Vdc Input

G

Data (+) Output (Modbus a)

M32008

A B C A B C 1 2 3

MB1

MB2

ECOM J3

R7910 HYDRONIC CONTROL OR

R7911 STEAM CONTROL

DO NOT CONNECT S7999C TO TERMINALS 1 2 3 AS THIS WILL RENDER 

THE DISPLAY INOPERABLE.

S7999C CAN BE

CONNECTED TO

EITHER MB1 OR 

MB2 A, B, C 

TERMINALS

S7999C MID-

LEVEL DISPLAY

Y + − G

120

VAC

L2
L1

V-INFINITY

FSC-S5-12U

V+

V–

N

L

WIRING KEY

LINE VOLTAGE

LOW VOLTAGE

DATA

1

1