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Operation And Checkout - Honeywell S688A Manual

Sail switch

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NOTE: Although it is not recommended, if the two-cell air
cleaner must be mounted horizontally with the power
supply on the Wtom, the sail switch must be installed at
a 45 degree angle Ilom vertical, see Fig. 8.
Fig. 8-Mount sail switch on back of power
supply.
NOTE: IF AIR CLEANER IS MOUNTED HORIZONTALLY WITH THE POWER
SUPPLY ON BOITOM, THE SAIL SWITCH MUST BE MOUNTED AT
A 45 DEGREE ANGLE FROM VERTICAL.
6.
Make wiringcomectionstotheN.C. (norrnallyclosed)
and COM (common) screw terminals in the sail switch.
7. Replace sail switch cover.
OPERATION
sail switch has a spdt switch, which permits different
The
hookups for controlling auxiliary equipment in a heating-
cooling system. The hookups in Figs. 9 and 10, show systems
where the controlled equipment operates only when the
system fan operates. When the fan produces 250 fpm air
velocity, the normally open contacts make, turning on the
auxiliary equipment. When the air velocity decreases to 75
WIRING
CAUTION
ELECTRIC SHOCK HAZARD.
CAN CAUSE ELECTRICAL SHOCK OR
EQUIPMENT DAMAGE.
Disconnect power supply before wiring.
All wiring must comply with local electrical codes and
ordinances. When controlling more than one device, make
certain that the total elect.ricaiload does not exceed the switch
rating (see Specifications).
Typical wiring hcmkups that have the switching action at
the sail switch are shown in Fig.
normally closed refer to the contacts when the switch is in the
de-energized position.
Fig. 9—Typicsl wiring hookups using sail
switch to energize electronic air cleaner.
EAC
M3011
DISCONNECT MEANS AS REQUIRED.
COMMON.

Operation and Checkout

fpm, the
normally
auxiliary equipment. The hookup in Fig. 10 shows a system
where auxiliary equipment operates when the system fan is
closed contacts break, turning off the auxiliary equipment.
When the air velocity decreases to 75 fpm, the normally
closed contacts make, turning on the auxiliary equipment.
5
9.
Normally open and
WHITE
C O M . N.O.
BLACK
FOR POWER OFF:
open contacts
break, turning off the
60-2103-3
S688A
L1

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