Kodiak
Recirculating Chiller Technical Manual
Manual# 820-0043 Rev N, 11/25/2019
9
General Information
Chiller System Description
Your chiller consists of a refrigeration system, a coolant loop, associated controls and
plumbing. The pump draws coolant from the internal reservoir and pumps it out to cool your
equipment, and then the coolant flows back to the chiller. It flows through the evaporator,
where the heat is removed, and then flows back into to the reservoir.
Coolant Loop (flow control)
Kodiak chillers are designed to operate with continuous coolant flow through a closed loop.
This loop contains the system pump, temperature sensor, reservoir, internal and external
plumbing lines and fittings, and the external heat load. The external plumbing and the heat
loads are provided by the end user and are generally unique to the user’s process and/or
location.
****CAUTION****
Do not put valves in the system that can stop flow while the chiller is operating.
Refrigeration System and Hot Gas Bypass
The chiller uses a standard refrigeration system to keep the coolant at the process temperature
set point. The compressor compresses the refrigerant vapor (gas), which then passes through
the condenser where it is cooled and turns to a liquid. The refrigerant in its liquid state then
passes through the evaporator. The coolant also flows into the evaporator, through passages
separated by thin layers of metal from the refrigerant. The refrigerant evaporates, drawing heat
from the coolant. The refrigerant vapor returns to the compressor and continues the cycle.
Kodiak
Recirculating Chiller
(FRONT VIEW)
