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Unformatted text preview: ndicating thereon the name of manufacturer or installer,
kind and total number of kgs. of refrigerant contained in the system and field test pressure
applied. 8.9 In refrigerating plants of more than 45 kg. refrigerant, masks and helmets shall be used.
These shall be kept in a suitable cabinet outside the machine room when not in use. 8.10 Not more than 136 kgs. of refrigerant in approved containers shall be stored in a machine
room at any given time. 8.11 Where ammonia is used, the discharge may be into a tank of water, which shall be used
for no other purpose except ammonia absorption. At least one gallon of water shall be
provided for every 0.4536 kg. of ammonia in the system. 8.12 Refrigerant piping crossing a passageway in any building shall not be less than 2.3 meters
above the floor. 8.13 In a refrigerating system containing more than 9 kgs., stop valves shall be installed in
inlets and outlets of compressors, outlets of liquid receivers, and in liquid and suction
branch header. 8.14 Window type Acs shall be provided with drain pipe or plastic tubing for discharging
condensate water into a suitable container. 8.15 Window type AC installed on ground floors of buildings shall not be less than 2.13
meters from the ground. 8.16 Wind type Acs shall be provided with exhaust ducts if the exhaust is discharged into
corridors/hallways/arcades/sidewalks etc. 8.17 Window type ACs installed along corridors/hallways above the first floor shall not be less
than 2.13 meters above the floor level. 9. Water Pumping for Buildings/Structures:
9.1 Installation of pumping equipment to supply buildings/structures from existing water
supply system shall only be allowed if there is always water in the mains. 9.2 To maintain water pressure in all floors of a building/structure, the following systems
may be used:
9.2.1 Overhead tank supply - may be installed above the roof supported by the
building/structure or on a separate tower.
18.104.22.168 Water tanks shall be provided with a vent and an overflow pipe leading to
a storm drain and shall be fully covered. 9.2.2 Pneumatic tank - an unfired pressure vessel, initially full of air, into which water
from mains is pumped.
22.214.171.124 A suitable pressure which shall stop the pump when pressure required is
126.96.36.199 Tanks shall be designed for twice the maximum total dynamic pressure
188.8.131.52 An air volume control device shall be installed to maintain correct air
volume inside the tank. 10. Pipings:
10.1 Piping shall, as much as possible, run parallel to building walls. 10.2 Grouped piping shall be supported on racks, on either horizontal or vertical planes. 10.3 Piping on racks shall have sufficient space for pipe or chain wrenches so that any single
line can be altered/repaired/replaced without disturbing the rest. 10.4 Piping 100 millimeters in diameter and above shall be flanged. Smaller sized pipes may
be screwed. 10.5 Piping subjected to varying temperatures shall be provided with expansion joints. 10.6 Galvanized pipin...
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This note was uploaded on 09/22/2013 for the course ARIDBE AR taught by Professor Any during the Fall '12 term at Mapúa Institute of Technology.
- Fall '12