Dormont ES-D-GAC User Manual
For Use with Stationary Outdoor Standby Generators
ES-D-GAC_Generators
Job Name ________________________________________
Job Location ______________________________________
Engineer _________________________________________
Approval ___________________________________
Dormont® Flexible Gas
Appliance Connectors
Supr-Safe®, SafetyShield®, ULTRAflow
The flexible connection between the gas supply and the gas inlet of
a Stationary Outdoor Backup/Standby Generator.
Features
• Operating Temperature -40°F to 150°F (-40°C to 65.6°C)
• Operating Pressure MAX 0.5psi (3.45 kPa)
• Hydrostatic Burst Pressure MIN 250psi (1725 kPa)
• Flexible Tube Material Annealed 304 Stainless Steel
• Flare Nut Material Carbon Steel with Zinc Trivalent
Chromate Plating
• Flare Adapter Material Carbon Steel with Zinc Trivalent
Chromate Plating
• Optional Powder Coating Yellow Polymer
• Optional Dip Coating Gray Heavy Duty, Antimicrobial,
UV Stabilizer
CSA Group Certificate of Compliance to
Product Standards
ANSI Z21.75/CSA 6.27 – Connectors for Outdoor Gas Appliances
and Manufactured Homes
Scope states “…intended for exterior use above ground for making
non-rigid connections…between the gas supply and the gas inlet
of an appliance for outdoor installation that is not frequently moved
after installation.” In addition section 1.5.4 states the connector is
designed for occasional movement after installation. Repeated bending, flexing or extreme vibration must be avoided. Normal operation of a clothes dryer, rooftop HVAC unit or SIMILAR OUTDOOR
APPLIANCE DOES NOT constitute extreme vibration or movement.
ANSI Z21.24/CSA 6.10 – Connectors for Gas Appliances
(Excluding 60/61 Series)
Contractor ________________________________________
Approval _________________________________________
Contractor's P.O. No. _______________________________
Representative ____________________________________
SKU _____________________________________________
®
For use with
stationary outdoor backup/
standby generators.
Series 30, 30C (Yellow) and 31 (Gray)
Applicable Codes
ANSI Z223.1/NFPA 54 National Fuel Gas Code Section 9.6
International Fuel Gas Code (IFGC) Section 411.1
B149.1 – Natural Gas and Propane Installation Code (CSA Group)
Section 6.21
Uniform Mechanical Code (UMC) Section 1313.0
Uniform Plumbing Code (UPC) Section 1212.0
Additional Approvals
Commonwealth of Massachusetts Board of State Examiners
of Plumbers and Gas Fitters
Additional Testing
UL2200-2015: Stationary Engine Generator Assemblies Section 66B
Vibration Test.
Product Configurations
SERIES NomINal ID NomINal oD
in in in in
30, 30C, 31
40, 40C, 41
50, 51 1 160, 61 1-
“C” indicates Yellow Powder Coating.
"1" indicates Gray PVC Coating.
Adding "CAN" prefix indicates product supplied with both English and French instructions for Canada.
Dormont product specifications in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements, please contact Dormont Technical Service. Dormont reserves the right to change or modify product design, construction, specifications,
or materials without prior notice and without incurring any obligation to make such changes and modifications on Dormont products previously
or subsequently sold. Refer to the owner's manual for warranty information.
1
⁄
2
3
⁄
4
1
⁄
4
5
⁄
8
1 ¾ 18 - 72
1
⁄
4
1-1⁄
2
FlaRE aDaptER thREaDS
(malE oR FEmalE Npt)
½ 18 - 72
1 18 - 72
1-1⁄
4
NomINal lENgth RaNgE
18 - 72
Minimum Flow Capacity
Straight Length BTU/hr. NATURAL GAS, 0.64 SG, 1000 BTU/cu.ft., 0.5"w.c. pressure drop
CoNFIguRatIoN
SERIES Nominal ID 18" 24" 30" 36" 48" 60" 72"
in
30, 30C, 31
40, 40C, 41
1
⁄
2
3
⁄
4
164,200 150,000 136,000 125,000 106,000 93,200
318,500 290,900 270,500 255,900 217,000 187,400
50, 51 1 637,000 581,800 545,200 515,900 442,700 398,900
60, 61 1-
⁄
4
1,139,000 1,075,000 1,010,500 946,000 817,500 725,500
1
Straight Length BTU/hr. LP GAS, 1.55 SG, 2500 BTU/cu.ft., 0.5" w.c. pressure drop
CoNFIguRatIoN
SERIES Nominal ID 18" 24" 30" 36" 48" 60" 72"
in
30, 30C, 31
40, 40C, 41
1
⁄
2
3
⁄
4
262,720 240,000 217,600 200,000 169,600 149,120
509,600 465,440 432,800 409,440 344,000 315,840
50, 51 1 1,019,200 930,880 872,320 825,440 708,320 638,240
60, 61 1-
⁄
4
1,822,400 1,720,000 1,616,800 1,513,600 1,308,000 1,160,800
1
NOTICE
The minimum flow capacity values in the charts are at 0.5" w.c. pressure drop
(inlet pressure minus outlet pressure). If your gas system has more available
pressure drop then a general rule of thumb approximate calculation is as
follows:
NomINal lENgth
NomINal lENgth
86,000
173,900
347,800
634,000
137,600
278,240
556,480
1,014,400
Minimum Flow Capacity @ your pressure drop = Square Root
(your pressure drop/0.5) x value from chart
Example: What is the approximate minimum flow capacity
(natural gas) of the Dormont 30 Series x 24" @
1" wc pressure drop?
Answer: Square Root (1/0.5) x 150,000 = 212,132 BTU/hr
WARNING
All installations must completely comply with all Dormont manufacturing company warnings
and instructions, national, state and local codes and all applicable ansi standards.
A Watts Water Technologies Company
Latin America: Tel: (52) 81-1001-8600 • Fax: (52) 81-8000-7091 • Dormont.com
ES-D-GAC_Generators 1610 © 2016 Dormont
USA: Tel: (800) 367-6668 • Fax: (724) 733-4808 • Dormont.com
Canada: Tel: (905) 332-4090 • Fax: (905) 332-7068 • Dormont.ca
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