Honeywell S688A User Manual

Honeywell
S688A
Sail Switch
The Sail Switch activates an electronic air
cleaner, a humidifier, or other equipment in
response to airflow j?om the system fan. The
S688A is rnountedin the return air duct where the
sail will be in the direct path of an unrestricted
air stream.
■ Simplified installations with mukispeed fans, in-
■ Top and bottom conduit knockouts for wiring
accessible air handlers, fan motors with voltage or
convenience.
phase different from controlled equipment; elimi-
nated wiring to system fan.
■ Low air velocity switch operation—makes at
■ Polyesterfihn sail mounted on a micro switch snap
250 fpm and breaks at 75 fpm.
switch.
■ Removable spring counterbalances sail to allow
mounting in either vertical (up or down) or hori-
zontal air flow.
CONTENTS
J.H. “ Rev. 9-91 “ @Honeywell Inc. 1991 ● Printed in U.S.A. “ Form Number 60-2103-3

Honeywell S688A Specifications

General

Brand	Honeywell
Model	S688A
Category	Switch
Language	English

Summary

Specifications

Electrical Ratings

Amperage ratings for N.O. and N.C. contacts at various voltages.

Sail Data

Dimensions and material specifications for the sail.

Minimum Airflow

Air velocity thresholds (fpm) for N.O. and N.C. contact operation.

Maximum Ambient Temperatures

Temperature limits for the switch and the sail.

Case Dimensions

Physical size of the sail switch enclosure.

Duct Mounting Hole Dimensions

Required size for mounting the switch in a duct.

Mounting Position

Allowed orientations for installing the sail switch.

Wiring Knockouts

Conduit knockout locations for wiring.

Replacement Parts

Part number for ordering a replacement sail.

Underwriters' Laboratories Listed

Safety listing and usage conditions.

Installation

Installation Caution

Important safety warning before starting installation.

Location

Recommended placement of the sail switch in the air duct.

Adapt Switch to Air Flow Direction

Instructions for adjusting the sail switch for different airflow orientations.

F52 Application

Specific mounting instructions for F52 applications.

Mount the Switch

General steps for mounting the sail switch using a template.

Mount Sail Switch on the F52

Detailed steps for mounting the sail switch onto an F52 unit.

Operation and Checkout

Operation

Explanation of the sail switch's SPDT function and how it controls auxiliary equipment.

Wiring

Safety precautions and typical wiring hookups for the sail switch.

Checkout

Procedure to verify the sail switch functions correctly after installation.