Table of Contents
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GW A4/2 HP SGS
Gas Pressure Switch
Installation Instructions
Table of Contents
Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . Page 1
Approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 1
Attention . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 1
Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 2
Mounting and Pressure Connection. . . . . . . . . Page 3
Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 3
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 3
Installation Position . . . . . . . . . . . . . . . . . . . . . . Page 4
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 5
Approvals
CSA Certified:
CSA C22.2 No.14
CSA C22.2 No.0
UL 508
File # 2620681
Attention
Explanation of symbols
1, 2, 3 ...
= Action
•
= Instruction
1 ... 6
USA
CDN
The installation and maintenance
of this product must be done
under the supervision of an ex-
perienced and trained specialist.
Never perform work if gas pres-
sure or power is applied, or in
the presence of an open flame.
Please read the instruction be-
fore installing or operating. Keep
the instruction in a safe place. You
find the instruction also at www.
dungs.com. If these instructions
are not heeded, the result may
be personal injury or damage to
property.
Any adjustment and application-
specific adjustment values must
be made in accordance with
the equipment manufacturers
instructions.
[V] [A]
[Hz] [VA]
Safety
first
O.K.
IFGC
CSA
UL
ANSI
NFPA
Check the ratings in the specifica-
tions to verify that they are suit-
able for your application.
On completion of work on the
pressure switch, perform a leak-
age and function test.
This product is intended for
installations covered by, but not
limited to, the following fuel gas
codes and standards: NFPA 54
or IFGC (International Fuel Gas
Code) or the following equipment
codes and standards: NFPA 37,
NFPA 85, NFPA 86, ANSI Z83.4/
CSA 3.7, ANSI Z83.18/CSA 4.9,
ANSI Z21.13, CSD-1.
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Table of Contents
Summary of Contents for MICROWATT DUNGS GW A4/2 HP SGS Series
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Page 1: Table Of Contents
GW A4/2 HP SGS Gas Pressure Switch Installation Instructions Table of Contents Table of Contents ......Page 1 Approvals . -
Page 2: Specification
Specification GW...HP SGS High/Low ventless gas pressure switch (SPDT). Pressure acts via the diaphragm against the force of the setting spring on the microswitch. The pressure switch operates without any auxiliary power. Max. Operating Pressure (MOP) Ambient / Medium Temperature °F GW 500 2* bar (30 PSI) Ambient: +5 °F ... -
Page 3: Mounting And Pressure Connection
Mounting and Pressure Connection Threaded Connection 1 Pressure connection (+) 1/4 G, Gas or Air. (1/4 G to 1/4” NPT adapter with gasket Order No. 231944) Mounting Procedure • Apply suitable pipe sealant to the male threads only. • Use 13/16” Wrench to secure the switch to the pipe. DO NOT Exceed 177 lb-in of Torque on 1/4” Connections •... -
Page 4: Adjustment & Reset
Adjustment & Reset Adjusting the Set Point 1. Remove the cover � from the switch. 2. Adjust the switch to the desired set point by turning the dial. � The arrow on the dial indicates the set point �. The arrow might not indicate the actual set point due to two factors. One is the set point tolerance of the switch, which can be ±15 % of the set point. -
Page 5: Dimensions
Dimensions Dimensions in milimeters 4 self-aligning pan-head screws M3x14 0.8 slot and DIN 7962-Z Phillips head G 1/4 pressure connection M20 x 1.5 gas or air Maintenance & Testing • Apply appressure to the + air pressure connection, and Annually check the switch for proper operation confirm that the NC contact breaks when pressure rises Set Point Calibration •... -
Page 6: Accessories & Replacement
Accessories & Replacement Accessory for pressure switch Order No. 1/4 G to 1/4” NPT adapter with gasket 231944 We reserve the right to make modifications in the course of technical development. Karl Dungs, Inc. Karl Dungs GmbH & Co. KG 3890 Pheasant Ridge Drive NE P.O. Box 12 29 Suite 150 D-73602 Schorndorf, Germany Blaine, MN 55449, U.S.A. Phone + 49 (0)7181-804-0 Phone 763 582-1700 Fax +49 (0)7181-804-166 Fax 763 582-1799 e-mail info@dungs.com e-mail info@karldungsusa.com Internet http://www.dungs.com Internet http://www.dungs.com/usa/ 6 … 6...
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