QUANTECH
FORM QWC3-EG1 (217)
66
2.06 POWER CONNECTION AND DISTRIBUTION
A. Power Panels:
1. NEMA 1 (IP32), powder painted steel cabinets with hinged, latched, and gasket
sealed outer doors. Provide main power connection(s), control power connections,
compressor start contactors, current overloads, and factory wiring.
2. Power supply shall enter unit at a single location, be 3 phase of scheduled voltage,
and connect to individual terminal blocks per compressor. Separate disconnecting
means and/ or external branch circuit protection (by Contractor) required per ap-
plicable local or national codes.
B. Exposed compressor and control power wiring shall be routed through liquid tight
conduit.
C. Power Supply Connection shall be:
1. Single Point Power Supply: Single point Terminal Block for field connection and in-
terconnecting wiring to the compressors. Separate external protection must be sup-
plied, by others, in the incoming power wiring, which must comply with the National
Electric Code and/or local codes.
2.07 ACCESSORIES AND OPTIONS
Some accessories and options supersede standard product features. Your Quantech
Sales Representative will be pleased to provide assistance.
A. Power Supply Connections (Factory Mounted):
1. Single Point Disconnect Switch: Single point Non-Fused Disconnect and lockable
external handle (in compliance with Article 440-14 of N.E.C.) can be supplied to
isolate the unit power voltage for servicing. Separate external fusing must be sup-
plied, by others, in the incoming power wiring, which must comply with the National
Electric Code and/or local codes.
2. Single Point Circuit Breaker: Single point Terminal Block with Circuit Breaker and
lockable external handle (in compliance with Article 440 14 of N.E.C.) can be sup-
plied to isolate power voltage for servicing. Incoming power wiring must comply with
the National Electric Code and/or local codes.
3. Multiple Point Circuit Breaker: Multiple point circuit breakers with lockable external
handles (in compliance with Article 440-14 of N.E.C.) can be supplied to isolate
power for servicing. Incoming power wiring must comply with the National Electric
Code and/or local codes.
B. Control Power Transformer (Factory Mounted): Converts unit power voltage to 120-
1-60 (500 VA capacity). Factory mounting includes primary and secondary wiring be-
tween the transformer and the control panel.
C. Flow Switch (Field-mounted): Vapor proof SPDT, NEMA 3R switch (150 PSIG), -20°F
to 250°F. Available with evaporator.
D. Differential Pressure Switch (Field mounted): Alternative to the paddle-type flow switch.
3-45 PSIG (0.2-3 bar) range with ¼” NPTE pressure connections. Available with evap-
orator.
Guide Specifications (Cont'd)
Summary of Contents for QWC3
Page 1: ...MODEL QWC3 WATER COOLED SCROLL LIQUID CHILLER 50 200 TONS 60Hz R 410a FORM QWC3 EG1 217 ...
Page 4: ...QUANTECH FORM QWC3 EG1 217 4 THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 39: ...FORM QWC3 EG1 217 QUANTECH 39 Unit Dimensions Four Compressor Cont d ...
Page 41: ...FORM QWC3 EG1 217 QUANTECH 41 Unit Dimensions Five Six Compressor Cont d ...
Page 56: ...QUANTECH FORM QWC3 EG1 217 56 Typical Control Panel Wiring 4 COMPRESSOR UNITS LD21794a ...
Page 57: ...FORM QWC3 EG1 217 QUANTECH 57 Typical Control Panel Wiring Cont d 4 COMPRESSOR UNITS LD21794b ...