Honeywell S688A User Manual

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Page 1

Honeywell

S688A

Sail Switch

The cleaner, a humidifier, or other equipment in response to airflow

S688A is rnountedin the return air duct where the sail will be in the direct path of an unrestricted air stream.

■

Simplified installations with

accessible air handlers, fan motors with voltage or

phase different from controlled equipment; elimi-

nated wiring to system fan.

■

switch.

Switch activates an electronic air

the system fan. The

fans,

sail mounted on a micro switch snap

■ Top and bottom conduit knockouts for wiring

■ Low air velocity switch operation—makes at

convenience.

250 fpm and breaks at 75 fpm.

■

Removable spring counterbalances sail to allow

mounting in either vertical (up or down) or hori-

zontal air flow.

Rev. 9-91

@Honeywell Inc. 1991 ● Printed in U.S.A.

CONTENTS

Form Number 60-2103-3

Page 2

S688A

SPECIFICATIONS ● INSTALLATION ● ORDERING INFORMATION

Specifications

MODEL S688A Sail Switch. ELECTRICAL RATINGS (Amperes):

Contacts

24 120 240

Vac

Full

Rotor Resistive

SAIL DATA:

Insertion length-10 in. [254 mm]. Maximum width-5 in. [127 mm]. Approximate area-26.2 in.

Contacts: Makes-250 Breaks-75 fpm.

Makes-75 fpm. Breaks-250 fpm.

1.0 1.0

12.0 12.0 6.0 6.0 6.0 3.0

ACTION Spdt

film sealed on music wire frame.

AIRFLOW

24 120 240

Vac Vac Vac

2.5 2.5 2.5

[1690

Contacts

1.0 0.5

switch.

MAXIMUM AMBIENT TEMPERATURES:

125° F [52° C] at switches. 170° F [77° C] at sail.

CASE DIMENSIONS: 2-5/16 in. [59 mm] high, 3-3/4 in.

[95 mm]

DUCT MOUNTING HOLE DIMENSIONS: 1-1/2 in.

[38 mm] by 2-1/4 in. [57 mm].

MOUNTING MEANS: Switch mounts on return air duct

with two sheet metal screws. An adhesive backed mounting template is provided. Sail is inserted into duct through

1-1/2 in. [38 mm] by 2-1/4 in. [57 mm] hole.

MOUNTJNG POSITION: Mounts in vertical (up or down)

or horizontal airflow.

end of ease. FINISH: Zinc plated case and cover. REPLACEMENT PARTS: Part no. 123773A Replacement

wide, 2-1/8 in. [54 mm] deep.

KNOCKOUTS:

in. conduit knockout in either

sail.

UNDERWRITERS’ LABORATORIES, INCL LISTED:

File No. E4436, Guide No. XAPX. For use in ambient

temperatures normally prevailing in

which usually are not higher than 77° F [25° C] but

occasionally may be as high as 104° F [40° C] for brief

periods.

spaces,

Installation

WHEN INSTALLING THIS PRODUCT...

1. Read these instructions carefully. Failure to follow them could damage the product or cause a hazardous condition.

2. Check the ratings given in the instructions and on the product tion.

eration as provided in these instructions.

make sure the product is suitable for your applica-

3. Installer must

4. After installation is complete, check out product op

service

CAUTION

Disconnect power supply before beginning damage.

LOCATION

Locate the sail switch in the return air duct where the sail will be in the direct path of Maximum ambient temperature at the switch is 125° [52° C] and at the sail is 170° F [77° C]. The air duct at the

Ordering Information

When

purchasing replacement and modernization products from your

TRADELINE Catalog or price sheets for complete ordering number, or specify—

1. Order number, TRADELINE, if desired.

If you have additional questions, need further

1. Your local Honeywell Residential Sales Office (check white pages of phone directory).

2. Residential Division Customer Satisfaction Honeywell Inc., 1885 Douglas Drive North Minneapolis, Minnesota 554224386 (612) 542-75(XI

wholesaler

unrestricted air stream.

or your distributor, refer to the

In Canada-Honeywell Limited/Honeywell Service Offices in all Netherlands,

Taiwan, United Kingdom U.S.A.

Ontario M 1P 2V9. International Sales and

Canada, Finland, France, Germany, Japan, Mexico,

Page 3

S688A

INSTALLATION

Fig. l-Mount shown for is recommended.

ALTERNATE LOCATION. MOUNT SAIL SWITCH ON THIS SIDE OF DUCT, OPPOSITE AIR ENTRANCE.

Fig. 2-hIlount eaii switch on center iine of duct in one of angle-t positions shown for junction

duct work.

UPSTREAM

switch in one of positions

UPSTREAM

MINIMUM

RETURN AIR

in.

[381 mm] MINIMUM

DO NOT MOUNT ON

SIDE OF DUCT.

AIR DUCT

DOWNSTREAM

/ BEST LOCATION \

UPSTREAM

must beat

least 12 in. [305 mm] deep

8 in. [203 mm] wide to allow operation of the sail without affecting the smooth flow of (up or down) or horizontal.

NOTE: When S688 is mounted in warm air, the sail life may

be reduced.

Refer to Figs. 1-3 for the best duct mounting location. Mount the switch at least 6 in. [152 mm] upstream from an elbow or junction, and at least 15 in. [381 mm] downstream from an

or junction. The switch must be located on the

opposite side of the duct from the air entrance.

ADAPT SWITCH TO AIR FLOW DIRECTION

The S688A Saii Switch is provided with two counterbalancing springs in

IMPORTANT:

Never

as shown in Fig. 4. These springs

use the sail switch with both springs

attached.

Fig. 4-Adapting

tion.

switch to air flow direc-

RETURN AIR DUCT

Fig. 3-Mount shown for angle-t junction duct work. Transition in trunk is recommended.

OUCT OPPOSITE AIR ENTRANCES AS SHOWN.

--1-1

STREAM

switch in one of positions

RETURN

DOWNSTREAM

AIR DUCT

FOR VERTICAL

00WNWARO AIR FLOW

REMOVE DOWN SPRING

FOR VERTICAL UPWARO

AIR FLOW

Adapt the sail switch to mounting position. (F52 requires special instructions; see separate instructions.) Standard Application

Horizontal air flow-remove both springs. Vertical

upward air

flow-leave in place the spring that

is attached to the bracket marked up.

Remove the

spring that is attached to the bracket marked

Vertical

downward air

that is attached

the

spring that is attached to the bracket marked

flow-leave in place the spring

the bracket marked

down. Remove

up.

60-2103-3

Page 4

S688A INSTALLATION

F52 Application

Ceiling-remove both springs. All

positions-leave in place the spring that is

attached to the bracket marked

Remove the

that is attached to the bracket marked

Fig. 5-Adapting sail switch to F52 mounting

ion.

spring

4. Attach the

sail to the switch as shown in Fig. 6.

NOTE: The sail switch makes at about 250 fpm and breaks

at 75 fpm. In an average residential system that produces 500 fpm in the return air duct, the switch will make at

approximately 50% and break at

of the maximum air

flow rate. In a system where air flow maybe as high as

1000 fpm the switch will not break until the airflow drops to about 7.5% of maximum. To retain the original on-off ratios of air flow, mm the sail. Trim about 1-1/2 in.

[38 mm]

the sail for 1000 fpm air velocity and proportionally more or less for higher or lower velocity. Correct trimming is important. If sail is too long, it will flutter and the wire frame may break prematurely; if it is too short, the switch may not operate.

5. Press the sides of the wire loop together. Insert the sail

into the duct.

6. Before fastening the switch in position, check to make

certain air movement will operate the switch. In the off position, the sail should point into the direction of airflow as shown in Fig. 7.

Fig. 7-Position sail so it points into the direction of airflow when switch is off.

DUCT

MOUNT THE SWITCH (See special

instructions forF52)

The sail switch counterbalancing springs are calibrated for proper operation when the sail switch case is mounted at true level for horizontal air flow applications, or plumb for vertical air flow applications. Proceed as follows, using the mounting template provided.

1. Mount the template at desired location. BE SURE THAT THE ARROW INDICATING AIR FLOW POINTS IN THE PROPER DIRECTION. Level the long dimension shown on the template for horizontal mounting. Plumb this dimension for vertical mounting.

2. Cut the hole indicated on the template in the ductwork.

3. Center punch the screw holes indicated and drill out

with a

inch drill.

Fig. 6-Attaching sail to switch.

provided. After wiring, snap on the cover. The Honeywell trademark tab can be snapped out and rotated 180 degrees so it will be upright for any vertical mounting position.

MOUNT SAIL SWITCH ON THE F52

and small

site of the arrow stamped on the inside of the case.

the power supply. Pull wires case knockout. Using two tapered the envelope, mount the L-shaped bracket to the air cleaner. Next, remove the ground screw on the sail switch to prevent interference with the L-shaped bracket. Mount the sail switch to the L-shaped bracket with two 8-32 screws. Airflow should be in opposite direction of airflow arrow.

SAIL SWITCH

SAIL IN OFF POSITION:

POINTS INTO AIR FLOW

M301 O

7. Secure the switch by using the sheet metal screws

1. Remove the sail switch, L-shaped mounting bracket from the air cleaner wiring

2. Remove sail switch coverandremoveknockout oppo-

3. Turn the air cleaner over and rest it on the carton.

4. Mount the sail on the sail switch.

5. Locate the two black wires extending from the back of

through

L-shaped bracket and

screws from

Page 5

S688A

OPERATiON AND CHECKOUT

NOTE: Although it is not recommended, if the two-cell air

WIRING

cleaner must be mounted horizontally with the power supply on the Wtom, the sail switch must be installed at a 45 degree angle

Fig. 8-Mount sail switch on back of power supply.

vertical, see Fig. 8.

ordinances. When controlling more than one device, make certain that the total rating (see Specifications).

the sail switch are shown in Fig. normally closed refer de-energized position.

CAUTION

●

ELECTRIC SHOCK HAZARD. CAN CAUSE ELECTRICAL SHOCK OR EQUIPMENT DAMAGE.

Disconnect power supply before wiring.

All wiring must comply with

electrical codes and

does not exceed the switch

Typical wiring

that have the switching action at

Normally open and

the contacts when the switch is in the

Fig. 9—Typicsl wiring hookups using sail switch to energize electronic air cleaner.

WHITE

➤

NOTE: IF AIR CLEANER IS MOUNTED HORIZONTALLY WITH THE POWER

SUPPLY ON

A 45 DEGREE ANGLE FROM VERTICAL.

Make

M3011

and COM (common) screw terminals in the sail switch.

7. Replace sail switch cover.

Operation and Checkout

OPERATION

The

sail switch has a spdt switch, which permits different hookups for controlling auxiliary equipment in a 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

fpm, the

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.

EAC

COM.

BLACK

POWER SUPPLY- F’ROVIDEOVERLOAD F’ROTECTIONAND

DISCONNECT MEANS AS REQUIRED.

TERMINAL DESIGNATIONSARE FOR POWER OFF:

NORMALLY OPEN,

COMMON.

normally

open contacts

- NORMALLY CLOSED, COM.-

break, turning off the

the fan produces 250fpm air velocity, the normally

60-2103-3

Page 6

OPERATION AND CHECKOUT

CHECKOUT

When one complete cycle to make sure described in OPERATION section.

operateequipmentthrough

switch functions as

Fig.

wiring hookups using sail

switch to energize two-wire auxiliary equip-

WHITE

-AA

POWEFIS.PPLY-PROVlDEOVERL0ADPROTECTi0NAf4D

DISCONNECT MEANS AS REQUIRED.

WHEN CONTROLLING

SWITCH 1“ HOT (BLACK) LINE.

TERMINALDESIGNATIONSARE FOR POWER OFF: N.O.-

NORMALLY OPEN,

NORMALLY CLOSED, COM.- COMMON.

—

(HOT)

WIRE

Residential and

Building Controls Division Building Controls Division

Honeywell Inc. 1985 Douglas Drive North Golden Valley, Minnesota 55422

Honeywell 740 Scarborough, MIP 2V9

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