Amico NFPA Triplex SCD Modular Stack Mount - Manual (Page 9)

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6.3.7 General Layout
1. Place the plant in scale on the plan drawings in the designated location. Ensure that the plant has sufficient
space on all sides for maintenance access and proper ventilation. Amico Source recommends 2 ft. (24”)
minimum clearance on all sides, 3 ft (36”) in front of the control panel, but it is sometimes possible to reduce
this clearance with exact knowledge of maintenance access requirements. Consult your Local Amico Source
representative if circumstances allow for less space.
2. Place the equipment in elevation views as appropriate.
3. On the plan, finalize the routing for the intake.
4. Size the intake piping. The sizing process is iterative:
a. Start with the total actual length of piping, and make an estimate for the line size (See Figure 4).
b. By using your estimated size, add equivalent lengths for the fittings employed.
c. Check that the size of the intake piping is still suitable at the new equivalent length. Should there be
any discrepancies, re-estimate the next larger size and repeat the steps above. The line may also be
sized more precisely by conducting an actual calculation. Intake piping must be sized to induce no
more than 4 inches water column vacuum at the compressor when all compressors are operating.
(Use total capacity for this calculation with all compressors running).
For unusual lengths or other circumstances, please contact your Local Amico Source representative
for assistance.
5. Finalize the connection to the distribution piping and size the system piping.
6.3.8 Specification
1. Select the sections appropriate to the technology and system layout desired.
2. Note into the specification any exceptional requirements (soft starters, etc.) that are necessary.
3. Schedule in the drawings the medical air plant selected.
Schedule at least:
a. The capacity per compressor (per NFPA) and total system capacity.
b. Horsepower per compressor.
c. Voltage, Hz, and phase desired.
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