ECOSAIRE EN Series, Owner'S Manual

Page: 8 / 142

Ecosaire
®
EN Series Precision Air Conditioner Owners Manual
Product Description Major Cooling Options
8 Ecosaire ® July 2009
Data subject to change without notice.
45
50
55
60
65
70
40
35
FreeCool
When the outdoor temperature is above
60°F (16°C), the Ecosaire ® unit operates
its refrigeration system to move heat into a
flow of glycol solution. Refrigeration con-
densing pressure is controlled by pressure-
controlled throttling valves.
Heat is transferred via pumped glycol-
fluid flow to an outdoor heat exchanger.
The outdoor heat exchanger has multiple
direct-drive propeller fans and is built with
aluminum body panels and copper tubes
with aluminum fans. A factory-wired control
box is supplied for field connection. The
TEFC NEMA-rated pump mounts directly to
the glycol-cooler subbase. Pre-wired fan
and pump control boxes are provided.
When the outdoor temperature is below
60°F (16°C), the Ecosaire
®
unit operates
its refrigeration system to move heat into a
flow of glycol. Refrigeration condensing
pressure is controlled by pressure-con-
trolled throttling valves.
Heat is transferred via pumped glycol-
fluid flow to an outdoor heat exchanger.
Whenever refrigeration is not needed, the
glycol flow is diverted to internal air heat
exchangers to transfer as much heat from
the room as possible. This extends the
compressor off-time.
When the outdoor temperature is below
45°F (7.2°C), the Ecosaire ® unit does not
use the refrigeration system. The glycol
flow is diverted to internal air heat
exchangers and transfers all the heat from
the room to outdoor air.
Remote Glycol Cooler
Remote Glycol Cooler
Remote Glycol Cooler
service isolation
valves (by others)
service isolation
valves (by others)
service isolation
valves (by others)
DESCRIPTION
EXAMPLE
Appearance, location, and quantity of component
s
may vary
.
Ecosaire
Ecosaire
Ecosaire