Install Instructions

ManualsBrandsAntunes ManualsAir Pressure Switches1/8" SPDT Air Differential Pressure Switch with FM Approval, 0.17-6 WC

Installation Information

Air Flow Interlocking Switch

Specifications

Electrical

10A @ 125, 8A @ 250, 7A @ 277 VAC

1/8 HP @ 125 VAC, 1/4 HP @ 250 VAC

Pilot Duty 125 VA @ 125/277 VAC

All Models

Maximum surge pressure: 20” W.C.

Maximum ambient temperature: 170°F

Minimum ambient temperature: -40°F

Model- SMD

You are installing one of the finest switches of its type on the

market. You will find this switch has many superior features

that insure dependable, accurate long life operation. This

switch is highly sensitive and fully approved. It is UL and

CSA listed, and has FM approval (optional).

Model - SMD

SMDI 1010802016 Rev. A 11/07

Please read this instruction sheet carefully to

assure correct installation. This equipment must

be installed only by a licensed electrician who is

experienced with combustion safeguard control

systems and understands the functions of an

interlocking switch such as gas pressure switches.

Prior to being put into operation in conjunction with

the combustion safeguard systems, all switches

should be tested for proper range setting and

proper wiring. Check piping connections and switch

housing for leaks with a soap bubble test. All

exhaust fans and blowers should be inspected and

checked for proper rotation prior to starting up.

Summary of content (4 pages)

PAGE 1
Installation Information Model- SMD Air Flow Interlocking Switch Specifications Electrical 10A @ 125, 8A @ 250, 7A @ 277 VAC 1/8 HP @ 125 VAC, 1/4 HP @ 250 VAC Pilot Duty 125 VA @ 125/277 VAC All Models Maximum surge pressure: 20” W.C. Maximum ambient temperature: 170°F Model - SMD Minimum ambient temperature: -40°F You are installing one of the finest switches of its type on the market. You will find this switch has many superior features that insure dependable, accurate long life operation.
PAGE 2
MODEL - SMD Dimensions 2 1/4” 7/8” Mounting Slots 3 19/32” 4 13/32” 1/2” Conduit Knockout O .88 NC 4 29/32” NO C 1/8” NPT Connection without fitting 3” Installation Models may be mounted in a horizontal or vertical position. All switches are tested at the factory in a vertical position. Locations of fittings and types of fittings may vary from unit to unit. Mounting in horizontal position, micro switch must be on the top.
PAGE 3
MODEL - SMD Air Connection Positive Pressure Negative Pressure Adjusting screw P v NO P v NC C Port Label (FM Only) Air Connection Tubing: Recommended as minimums: 1/4” copper or aluminum tubing; 1/8” pipe. All tubing and pipe must be clean and free from oil, dirt, and chips. If piping runs over five feet long, use larger size tubing or pipe, and reduce size at switch connection. Switch Differential @ 70º F Differential Operating Pressure Range .015” to .03” W.C. .17” - 1” W.C. .5” W.C. .
PAGE 4
Limitation of Liability It is understood and agreed that seller’s liability whether in The price stated for the equipment is a consideration in limiting contract, in tort, under any warranty, in negligence or otherwise seller’s liability. No action, regardless of form, arising out of the shall not exceed the return of the amount of the purchase transactions may be brought by purchaser more than one year price paid by purchaser and under no circumstances shall after the cause of action has accrued.