FORM QTC2-eg1 (515)
QUANTECH
69
F. Motor Current Module: Capable of monitoring compressor motor current. Provides ex-
tra protection against compressor reverse rotation, phase-loss and phase imbalance.
Option consists of one module per electrical system.
G. Condenser Coil Environmental Protection:
1. Pre-Coated:Epoxycoatedaluminumnstocktoguardfromcorrosiveagentsand
insulate against galvanic potential. For mild seashore or industrial locations.
2. Post-Coated Dipped: Dipped-cured coating on condenser coils for seashore and
other corrosive applications (with the exception of strong alkalis, oxidizers, and wet
bromine,chlorineanduorineinconcentrationsgreaterthan100ppm).
H. Protective Chiller Panels (Factory or Field Mounted)
1. Louvered Panels (condenser coils only): Painted steel as per remainder of unit cabi-
net, over external condenser coil faces.
2. Wire Panels (full unit): Heavy gauge, welded wire-mesh, PVC -coated to resist cor-
rosion, to protect condenser coils from incidental damage and restrict unauthorized
access to internal components.
3. Louvered Panels (full unit): Painted steel as per remainder of unit cabinet, to protect
condenser coils from incidental damage, visually screen internal components, and
prevent unauthorized access to internal components.
4. Louvered/Wire Panels: Louvered steel panels on external condenser coil faces,
painted as per remainder of unit cabinet. Heavy gauge, welded wire-mesh, coated
to resist corrosion, around base of machine to restrict unauthorized access.
I. Flow Switch (Field-mounted): Vapor proof SPDT, NEMA 4X switch (150 PSIG), -20°F
to 250°F.
J. DifferentialPressureSwitch:Alternativetoanabovementionedowswitch.A300psi
maximum working pressure SPDT 5 amp 125/250VAC switch, with a range of 3-45
PSIG (0.2-3 barg), deadband 0.5 - 0.8 psi, with 1/4” NPTE Pressure Connections.
K. Evaporator options:
1. Provide 1½" cooler insulation in lieu of standard ¾".
2. ProvideRaisedFaceFlangesforeldinstallationoncoolernozzlesandeldpiping:
a. 150 PSIG, welded Flanges.
L. Service Isolation valves: Service suction and discharge (ball type) isolation valves are
added to unit per system. This option also includes a system high pressure relief valve
in compliance with ASHRAE 15.
M. Remote Cooler: Manufacturer shall provide separately: chiller less evaporator, leaving
and return water sensors, and liquid line components (solenoid valves, lter driers,
sight glasses, and TXVs), as discrete elements of a complete factory system. Contrac-
torshallbeelderectsystemandprovideinterconnectingrefrigerantpipingandwiring
in accordance with Manufacturer recommendations, and project plans and schedules.
Wherenototherwisespecied,Contractorprovidedsystempipingshallbeinaccor-
dance with applicable sections of ASHRAE Handbook.
Guide Specifications (Cont'd)