Technical data

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3.3 Storage Tank
System shall include a ____ gal-
lon stainless-steel storage tank,
factory piped, and installed
beneath the chiller cabinet.
4.0 ACCESSORIES
4.1 Emergency Water
Switchover Module
This module shall automati-
cally switch to emergency (city)
water on either a high fluid tem-
perature alarm or loss of fluid
flow alarm. This module shall be
a pre-piped and wired assembly
that consists of an enclosure,
RCM4 monitor, on/off switch, 24
VAC control transformer pro-
tected by a circuit breaker, non-
powered alarm contacts, auto/
manual override switch, reset
switch, time delays, flow switch,
and high temperature thermo-
stat. The system shall also
include two ball valves, two
three way solenoid valves, dou-
ble check backflow preventer,
circuit setter on the drain line, a
fluid pressure gauge and valve,
and a dial thermometer on the
entering fluid line. It shall
require a 120 VAC, 60 Hz, single
phase power input.
Note: This module must not be
used on systems that circulate
glycol as the cooling medium.
4.2 Water Level Control
and Alarm System
The chiller shall have a water
level control and alarm system
that shall automatically add
water to the thermal storage
reservoir when the water level
drops below a preset level. An
alarm circuit shall activate if
the tank has not filled after a
preset time period of four min-
utes, and a lock out circuit shall
de-energize the solenoid valve
with integral strainer, double
check backflow preventer, flow
regulating valve, automatic air
vent, and time delay relays.
The module shall also include a
pre-wired RCM4 monitor with a
local display for high fluid level,
low fluid level, fluid fill and fluid
fill lockout, and separate non-
powered contacts for high fluid
level, low fluid level, and fluid
fill, and non-powered common
alarm contacts. The system
shall be field installed. It shall
require 120 VAC, 60 Hz, single-
phase power input.
4.3 Fluid Pressure Gauge
A quantity of ________2½ in.
(63.5 mm) dial gauges, suitable
for field panel mounting for sup-
ply and/or return pressure mea-
surement shall be provided. The
gauge shall have a scale from 0
to 100 PSIG (0 to 690 kPa), and
black painted steel housing, and
a bourdon tube for monitoring
pressure.
4.4 Check Valve
A brass body and swing check
valve shall be provided for field
installation in the fluid piping to
prevent backflow.
4.5 Dial Thermometer
A quantity of ______2 ½in. (63.5
mm) dial thermometers, suitable
for field panel mounting for sup-
ply and/or return fluid tempera-
ture measurement shall be
provided. The thermometers shall
have a dual scale from 20°F to
120°F and have -6.7°C to 54.4°C.
4.6 Relief Valve
A brass body valve preset at 50
PSI (344 kPa) shall be provided
for field installation in the fluid
piping.
4.7 Circuit Setter
A bronze body, calibrated bal-
ancing valve for flow balance,
metering, and shutoff shall be
provided for field installation.
4.8 Ball Valve
A quantity of _____brass body,
¼ turn ball valves for isolation
of fluid piping components and
serviceability shall be provided
for field installation.
4.9 High Temperature
Thermostat
A remote bulb adjustable thermo-
stat with an adjustable range
from 40°F to 90°F (4.4°C to
32.3°C) shall be provided for field
installation. The thermostat shall
provide a non-powered alarm con-
tact when the fluid temperature
rises above design limit.
4.10 Low Flow Switch
A brass body flow switch shall
be provided for field installation
to provide a non-powered alarm
contact when fluid flow falls
below design limit.
4.11 Wall-Mounted
Monitoring Box
A wall-mounted monitoring box
shall be provided. The box shall
include a flowmeter, 100 micron
filter, four (4) ball valves, supply
and return temperature gauges,
and supply and return pressure
gauges.
5.0 EXECUTION
5.1 Installation of
Process Fluid Chiller
5.1.1 General
Install process fluid chiller in
accordance with the manufac-
turer’s installation instructions.
Install units plumb and level,
firmly anchored in locations indi-
cated and maintain manufac-
turer’s recommended clearances.
5.1.2 Electrical Wiring
Install and connect electrical
devices furnished by manufac-
turer but specified to be field
installed. Furnish copy of manu-
facturer’s electrical connection
diagram to electrical contractor.
5.1.3 Field Quality Control
Start up process fluid chiller
units in accordance with manu-
facturer’s start up instructions.
Test controls and demonstrate
compliance with requirements.