Potter Releasing Systems - Manual (Page 60)

60
System Installation
• Read and Understand All Instructions Before Proceeding
• Follow the manufacturers instructions
• Never connect or disconnect wiring or circuit boards with any power applied!
• Test release panel completely before bringing it to the job site. This will eliminate the possibility of installing
a defective panel
• Perform power calculations to determine if system power supply and wiring are sufficient
• Perform battery calculations to determine proper battery size
• Fire circuits cannot be run in the same raceway, cable or conduit as high voltage circuits
• When not in conduit, fire circuits should not be strapped to high voltage conduit, as electrical “noise” can
interfere with the fire circuits
• Prepare a carefully laid out drawing of the complete system, including wiring hookup. A copy of this drawing
should be secured in the panel cabinet
• Locate the panel for convenience and serviceability
• Carefully remove the panel and any associated modules from the cabinet
• Mount the cabinet and complete all conduit connections
• Pull all system wiring through conduit, tag and mark wires
• Install panel and any associated modules in cabinet
• Check integrity of field wiring
Before making any external circuit connections:
1. Power up the panel using only the end of line devices. The panel should be in a normal condition
2. Power down
3. Connect one circuit
4. Power up, panel should be in a normal condition
5. Repeat steps 2-4 until installation is complete
Battery Size Calculations
To use Calculation Table
1. List in column #1 all devices used in the system, include all modules, bells, horns, door holders, and smoke
detectors (see table #1 or manufacturers specifications).
2. List in column #2 the quantity of each device.
3. List in column #3 the standby current of each device (exclude all signal indicating devices).
4. List in column #5 the alarm current of each device.
5. For each line, multiply the figure in column #2 by the figure in column #3 and enter the product in column
#4. Then multiply the figure in column #2 by the figure in column #5 and enter the product in column #6.
6. Add the figures in columns #3 and #6, enter the sums in the appropriate Total mA box.
7. Convert these figures from mill amperes to amperes by multiplying by 0.001, enter the product in the
appropriate Total A box.
8. Multiply the standby total amperes by required time in hours from table 2.
9. Divide the alarm total amperes by 12 (5 mins.).
10. Add the standby AH and the alarm AH and divide this sum by 0.85 (efficiency factor). Select a battery that
has an AH rating above this figure but not less than 6.5AH.