NYC 9/11 Public Portal Document
1" W.G. Damper actuators (U.L. approved) and EP’s shall be provided by the damper
manufacturer.
Dampers shall have a fusible link which melts on heat causing damper to close and lock
in a close position.
2. Add paragraph 1.2.A. 11
Air conditioning units AC-4, AC-5 and AC-6 are equipped with the water side
economizer coil. Provide an adjustable aquastat (set for 55°±) on condenser water supply
line to activate free cooling mode. If free cooling operation cannot satisfy space load,
mechanical cooling shall be activated.
SECTION 15190
1. Paragraph 1.3.B revised as follows:
130 GPM of water from 99.8°F to 84.4°F at 78°F wet bulb.
2. Paragraph 1.3.C revised as follows:
change: “galvanized steel” to “stainless steel.”
3. Paragraph 1.3.D
add: “Provide a variable pitch fan drive.”
4. Paragraph 1.3.F
change: “PVC” to “galvanized.”
5. Paragraph 1.3.G
change: “2 HP pump motor”... to “1-1/2 HP pump motor.”
6. Paragraph 1.3.H
change: “.... Specially formulated PVC to “galvanized steel.”
7. Paragraph 1.3.0
Delete in its entirety.
8. Paragraphs 1.4.A.11
NYC-WTC_000173388
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