UNITED Fire Systems STANDPIPE-PAC SSS-101, Руководство по проектированию, установке, эксплуатации и техническому обслуживанию

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UNITED FIRE SYSTEMS
STANDPIPE-
PAC™ MODEL SSS-101
DESIGN, INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
REVISION 2.00
P/N 10-540101-001
Page 21
3.3.6. Optional Dialer Wiring. See Appendix D
3.4 Commissioning.
3.4.1 Required Supervisory Pressure
STANDPIPE-
PAC™
has been designed and engineered to meet all
requirements of Boston Fire Department TCM3-51725. Paragraph 4.1, states:
Pressure. Pressure shall be maintained in the standpipe and cross
connections at all times and shall not exceed 25 psig (172 kPag)
by utilizing nitrogen or an air compressor with an air dryer.
The
supervisory pressure shall be as determined by a registered design
professional
(italics added).
To comply with this requirement, UNITED Fire Systems adjusts the pressure
switches on
STANDPIPE-
PAC™
to:

Turn the compressor ON when the pressure falls below 13
PSIG, and OFF when the pressure reaches 18 PSIG.

Provide a LOW pressure signal at 7 PSIG, and a HIGH
pressure signal at 23 PSIG.
Maintaining the pressure between 13 and 18 PSIG should be adequate for
supervising the standpipe, and providing prompt signaling if a valve is
opened or a portion of the standpipe is removed. Setting the HIGH pressure
signal at 23 PSIG (2 PSIG less than the code allows) provides a safety
margin accounting for the accuracy of the signal switch and the pressure
gauge.
Maintaining the safety margins between pressure switch settings provides
adequate standpipe supervision without added risk of nuisance signals. Of
course, if a
registered design professional requires different settings, the
switches may be adjusted to comply.
En
Figure 13
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Figure 14
IMPORTANT
Signals from the STANDPIPE-
PAC™
are NOT fire alarm signals. UNITED Fire Systems recommends that all
devices connected to the Notification Appliance Circuit (NAC) of the STANDPIPE-
PAC™
unit be clearly
differentiated from any fire alarm signals present in the building.
IMPORTANT
The STANDPIPE-
PAC™
unit, including control unit, has been pre-wired and programed at the factory for proper
operation. DO NOT alter any factory wiring or control unit programming. Failure to follow this instruction can result in
improper STANDPIPE-
PAC™
operation and will void the factory warranty.