CCT+White+Sturgeon - Consolidated - Part 2 - General notes and key notes for HVAC

Oct 23, 2026

General notes and key notes outline HVAC coordination and installation responsibilities for a system described as an interlinked louver and exhaust fan arrangement. Requirements specify that the louver opens fully before the fan enables, control wiring and conduit responsibilities are assigned to the mechanical contractor, and connections to a central PLC fall under the electrical contractor. Additional routing and exhaust discharge distance/height criteria reference 2021 IMC and prescribe constant low-speed operation with refrigerant leak detection behavior.

LanguageEnglish

CategoryHealthcare

FormatPDF

Pages38

Reading Time1 h 36 min

AccessFree to download

General notes

Key notes

USER: CAMPBELL, K IM : LAST SAVED: 2024/06/05 : PLOT DATE: 6/5/24 | D
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GENERAL NOTES
1. COMBINATION LOUVER INTERLINKED WITH EXHAUST FAN OPERATION. LOUVER SHALL OPEN FULLY PRIOR TO FAN ENABLING. 2. THERMOSTAT AND SENSOR WIRE SHOWN ON THIS DRAWING ARE TO BEIN CONDUIT. THE MECHANICAL CONTRACTOR IS RESPONSIBLE FOR THE LOW VOLTAGE CONTROL WIRING AND CONDUIT FOR FCU-1, CU-1, ERV-1, DAMPERS, REFRIGERANT DETECTION AND UNIT HEATERS. 3.
CONNECTIONS TO THE CENTRAL PLC ARE THE RESPONSIBILITY OF THE ELECTRICAL CONTRACTOR.
KEY NOTES
1. ROUTE FAN COIL CONDENSATE TO UTILITY SINK WASTE PIPE.
2. MACHINERY ROOM EXHAUST SHALL TERMINATE NO LESS THAN 15' ABOVE GRADE AND NO LESS THAN 20' FROM ANY BUILDING EXITS, WINDOWS, OR AIR INTAKES PER 2021 IMC 1106.4. ROOF HEIGHT AT LOCATION SHOWN IS 15'-0" ABOVE GRADE, CONTRACTOR SHALL CONFIRM CRITERIA LISTED ARE MET PRIOR TO INSTALLATION.
3. MACHINERY ROOM EXHAUST SHALL OPERATE CONSTANTLY AT LOW
SPEED ACCORDING TO EQUIPMENT SCHEDULE. REFRIGERANT LEAK DETECTION SYSTEM SHALL ACTIVATE HIGH SPEED UNTIL MANUALLY RESET.

~~ ~~=-0N"~~ ~~ICAL~~ ~~HVAC~~ ~~FLOOR~~ ~~PLAN~~ ~~
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FAQs

What must the louver do before the exhaust fan enables?

The louver shall open fully prior to fan enabling.

Who is responsible for low-voltage control wiring and conduit for specified HVAC components?

The machinery room exhaust must terminate no less than 15 ft above grade and at least 20 ft from building exits, windows, or air intakes per 2021 IMC 1106.4.

How should the machinery room exhaust operate under normal and leak-detection conditions?

It should operate constantly at low speed according to the equipment schedule; the refrigerant leak detection system should activate high speed until manually reset.

Oct 23, 2026

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