4-3.22 Post-Installation Checkout - Kidde Fire Systems ECS Manual

4-3.22 Post-Installation Checkout
After an HFC-227ea system installation has been completed, perform the following inspections
and tests.
1. Verify that the cylinders of correct weight and pressure are installed in accordance with in-
stallation drawings.
2. Verify that the cylinder brackets and straps are properly installed and all fittings are tight.
3. The piping distribution system must be inspected for compliance with the system drawings,
NFPA 2001, design limitations within this manual and the computerized hydraulic calcula-
tions associated with each independent piping and nozzle configuration.
4. Check that the discharge manifold, discharge piping and actuation piping are securely
hung. Ensure all fittings are tight and securely fastened to prevent agent leakage and haz-
ardous movement during discharge. The means of pipe size reduction and installation po-
sition of the tees must be checked for conformance to the design requirements.
5. The piping distribution system must be cleaned, blown free of foreign material and inspect-
ed internally to ensure that oil or particulate matter will not soil the hazard area or reduce
the nozzle orifice area and affect agent distribution.
6. System piping should be pressure tested in accordance with the requirements of NFPA
2001.
7. Ensure that the check valves are installed in the proper location as indicated on the instal-
lation drawings and that the equipment is installed with the arrow pointing in the direction
of flow.
8. Verify the nozzles are installed in the correct locations and have the correct part numbers
and orifice sizes as indicated on installation drawings. Discharge nozzles must be oriented
such that optimum agent dispersal can be achieved. Check the nozzle orifices for any ob-
structions.
9. The discharge nozzles, piping and mounting brackets must be installed such that they will
not cause injury to personnel. The agent must not be discharged at head height or below
where people in a normal work area could be injured by the discharge. The agent must not
directly impinge on any loose objects or shelves, cabinet tops or similar surfaces where
loose objects could be propelled by the discharge.
10. For systems with a main/reserve capability, the MAIN/RESERVE switch must be clearly
identified and properly installed where it is readily accessible.
11. Manual pull stations must also be clearly identified and properly installed where they are
readily accessible. All manual stations that activate HFC-227ea systems should be properly
identified as to their purpose. Particular care should be taken where manual pull stations
for more than one system are in close proximity and could be confused and the wrong sys-
tem actuated. In this case, manual stations should be clearly identified as to which hazard
area they affect.
12. Perform the electric control head test outlined in Paragraph 5-4.3.1 on all cylinders
equipped with electric control heads.
13. Perform the pressure switch test outlined in Paragraph 4-2.3.1 for all pressure switches in-
stalled.
14. All acceptance testing shall be in accordance with NFPA 2001.
06-236115-001 4-39
Design and Installation
October 2014