Section 2 - Product Description; Chiller-Heater Components; Control Panel; Figure 1 - Yhau-Cgn/H-120~300Ex(H/S) And 360Ex~1600Exw3(H/S) - York EX Series Installation, Operation & Maintenance Instructions Manual

FORM 155.32-ICOM1.EN.GB
ISSUE DATE: 10/13/2017
The principle of refrigeration is the exchange of heat.
In absorption liquid chilling, there are four basic heat
exchange surfaces: the evaporator, the absorber, the
generator, and the condenser. See Figure 1 on page
15.
Like any refrigeration system, absorption chilling uses
evaporation and condensation to remove heat. The ab-
sorption cycle uses water as the refrigerant and lithium
bromide (LiBr) as the absorbent. It is the strong affin-
ity that these two substances have for one another that
makes the cycle work. The entire process occurs in al-
most a complete vacuum.

CHILLER-HEATER COMPONENTS

The absorption chiller-heater consists of the following
components:
• evaporator
• absorber
• condenser
• generators
ITEM COMPONENTS
A
Cooling Water Outlet
B Condenser
Low Temperature
C
Generator
High Temperature
D
Generator
E Burner Fan Motor
F Natural Gas Inlet
G Burner Fan
H

Control Panel

I
Solution Pump
J Cooling Water Inlet
K Chilled/Hot Water Inlet
L Evaporator
M Chilled/Hot Water Outlet
N
Absorber

FIGURE 1 - YHAU-CGN/H-120~300EX(H/S) AND 360EX~1600EXW3(H/S)

JOHNSON CONTROLS
SECTION 2 – PRODUCT DESCRIPTION
A
N
M
L
K
J
I
• solution heat exchangers to heighten the cycle
efficiency
• pumps to circulate the refrigerant and solution in
the cycle
• purge unit to remove non-condensable gas from
the machine
CONTROL PANEL
The absorption chiller-heater comes with a factory
mounted and pre-wired control system. The control
panel enclosure is equipped with a hinged access door
with lock and key. The control panel includes a touch
panel showing all system parameters in various lan-
guages with numeric data in metric units. For details
of the control panel, see SECTION 6 – OPERATION.
The unit is also equipped with two methods to start and
stop operations:
• touch panel
• external signal
B
H
G
F
2
C
D
E
15