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Phone: 317-337-9813 www.continentalchillers.com
Fax: 317-337-9816
Continental Single Phase Chillers
UniPac™
UniPac™ Options and Selection Procedures
1. Control Transformer - For applications where a separate 115-volt power
source is not available, a transformer can be installed and wired between the line
voltage power terminal block and the 115-volt control circuit. Transformer primary
fuses are included.
2. Factory mounted and wired flow switch - This accessory is mandatory for
Continental warranty to be effective. Provides protection from chiller freezing due to
“no flow” through chiller-evaporator.
3. Factory Mounted and Wired Chiller Water Pump/Valve - Includes chilled
water circulating pump, pump starter, and isolation valve. Provides system pump for
chilled water circulation- saves field labor and material. This pump is interlocked with
the flow switch and “phased in” at the factory for proper rotation.
4. Non-fused Disconnect - Factory mounted non-fused disconnect sized for
model and voltage. This saves field labor and material.
5. Low Evaporator Pressure Freezestat - Senses low evaporator pressure and
shuts down system after sixty second time delay. Extra safety protection against low
pressure due to gas shortage or freeze conditions.
6. Pressure Gauges - Two-inch diameter gauges are factory installed and piped
to compressor. High and low pressure for each refrigerant circuit.
7. Indicator Lights - Three indicating lights show Power On, High Pressure Fail,
and No Flow/Freeze for each refrigerant circuit.
8. Vibration Isolators - Level adjusting spring type for one-inch deflection for
field mounting-reduces vibration transmission.
9. Low Ambient Controls - Standard units have fan cycling and are good for
45°F ambient.
a) For Low Ambient of 0°F. Includes a modulating solid state fan speed controller
and a single phase condenser motor(s) as well as fan cycling.
b) For Low Ambient of –20°F. Includes head pressure control valve in conjunction
with oversized heated and insulated receiver(s) and fan cycling. Receiver includes
pressure relief valve.
10. Micro-Processor Controller
11. Water Regulating Valve - Provides head pressure control for water cooled
models USWC.
12. 90/10 Cu-Ni Condenser - For water cooled models, USWC.
13. Blygold or Heresite Coated Condenser - Coil is coated with Blygold or
Heresite for protection against elements. Minimal effect on heat transfer.
14. Copper Tube/Copper Fin Condenser Coil - Seamless copper tube with die
formed copper fins, mechanically bonded to the tube. Provides maximum protection
from salt-water environment due to the elimination of dissimilar metals.
15. Complete Unit Coating - Your choice of paint, Blygold, Imron, polyester or
Heresite coating for compete unit.
16. Stainless Steel Hardware - For extra protection against corrosion.
17. Low Speed Condenser Fan Motors - For lower noise levels
18. Centrifugal Condenser Fans - For ducted applications
19. Acoustical Enclosure - Compressor is located in an acoustical enclosure
providing dampening of sound levels.
20. Dual Unit Kit - Allows operation of two or more units
21. Alarm Bell Contacts - Allows alarm bell connection to pressure controls for
signaling if unit fails on manual reset safety controls. (alarm bell is not included but
can be provided)
22. Water Flange Kit - Factory or field mounted consists of 150lb raised face
flanges to convert male pipe thread to flanged cooler connections.
23. High Return Water Thermostat - Factory mounted thermostat senses high
return water temperature at start-up. Allows unit to run un-loaded instead of shutting
down due to high head pressure
24. Brine Chilling - Modified cooler and controls for various
brines/glycols/alcohols.
25. High entering Water Process Cooling - Secondary plate heat exchanger
with pump, factory mounted and wired to protect compressor against burnouts due to
high water temperatures.
26. Potable/Ingredient Water at 34°F - For bakeries/produce or other
applications.
27. Cooler Heater with Thermostat - For freeze protection.
28. Desuperheaters - Provides “free hot water” by recovering heat from super
heated gas.
29. Compressor Circuit Breaker - Both fused and non-fused short circuit
protection for each compressor, further reducing chance of motor burnout.
30. Digital Temperature Readout
31. Compressor Cycle Counter/Hour Meters
32. Non-Ozone Depleting, Environmentally-Friendly Refrigerant
Ratings and Selection Procedures
1. Ratings: are in accordance with ARI standard for chillers. These ratings
may be interpolated for any published chilled water temperatures between 40°F
and 50°F but must not be extrapolated.
2. Chilled Water Flow: based on 2.4 GPM per Ton and 10°F chilled water
range. Limit 6°F minimum to 14°F maximum.
3. Cooler Fouling Factor: 0.00025 fouling is standard
For 0.0005 fouling capacity correction factor = 0.982 x TR, 0.994 x kW
For 0.00075 fouling capacity correction factor = 0.964 x TR, 0.989 x kW
4. Water cooled condenser fouling factor : ratings are based on 0.00025 for
condenser. For 0.00075 Condenser tons x 0.97 –kW x 1.045
5. Copper Fin Ratings: TR x 1.01 – kW x 0.99
6. Ethylene Glycol Correction Factors: Following factors are to be applied
to the standard ratings for ethylene glycol. For other glycols consult factory.
Correction Factors
% Wt.
Ethylene
Glycol
Tons
kW
VP
GPM/
°F /Ton
Freeze
Point
(°F)
10 .995 1.000 1.02 24.1 26
20 .990 0.995 1.05 24.8 16
30 .980 .990 1.10 26.0 5
40 .975 0.985 1.13 27.3 -10
50 .960 0.980 1.18 29.0 -32
Altitude: Ratings are based on altitude of sea level. For other ratings use the following
correction factors
Alt. Above
Sea Level
Capacity
Multiplier
Alt. Above
Sea Level
Capacity
Multiplier
Sea Level 1.0 4000 .971
1000 1.0 5000 .962
2000 .995 6000 .951
3000 .980 7000 .949
7. For ratings outside this catalog range consult Continental for assistance
Tel:(317)337-9813 Fax:(317)337-9816 E-mail: sales@continentalchillers.com
Selection Procedures
All units are rated in accordance with ARI Standard and cover a wide range of leaving
chilled water temperatures and ambients from 85°F to 120°F.
To select any chiller it is necessary to know:
1. Capacity: ______ Tons
2. Entering and leaving chilled water temperature: ______ °F
3. Water Flow: ______ GPM
4. Design ambient temperature: ______ °F or
5. Entering/leaving cond. water temperature, for water cooled units: ______ °F
Knowing any two of items 1,2 or 3, the third can be calculated as follows:
GPM = Tons x 24
Temp. Rise(Vt)
4