LCX
RG66010687_rev.00
72
16.3 PUMPING AND STORAGE SYSTEMS
LCX units may be equipped with 6 types of pumping systems, complete with expansion tank and buffer
tanks:
- single pump (low LP head );
- single high-head pump (HP uprated);
- standard pump and back-up pump (OR – low head);
- standard pump and back-up pump (OR – low head);
- low-head pump for combined operation (AND);
- high-head pump for combined operation (AND);
In the case of pump systems including a back-up pump, the microprocessor controls the pumps in such a
way as to equally divide the hours of operation, changing over the pumps in the event of a fault.
LCX
042
052
062
072
082
091_2_4
Standard type of pump - OR / AND version
Available head, LCX with standard pump (nom. flow rate) OR
kPa
118
115
126
133
119
131
Available head, LCX with standard pump (nom. flow rate) AND
kPa
90
89
104
113
102
155
Uprated type of pump - OR / AND version
Available head, LCX with uprated pump (nom. flow rate) OR
kPa
188
177
183
184
168
181
Available head, LCX with uprated pump (nom. flow rate) AND
kPa
176
166
150
148
131
181
Uprated type of pump - OR / AND (FC) version
Available head, LCX F with uprated pump (nom. flow rate) OR
kPa
151
131
150
152
129
151
Available head, LCX F with uprated pump (nom. flow rate) AND
kPa
139
120
115
116
91
151
Expansion tank
dm
3
8 8 8 8 8 12
LCX
101_2
_4
121_2
_4
141_2
_4
161_2
_4
174
194
Standard type of pump - OR / AND version
Available head, LCX with standard pump (nom. flow rate) OR
kPa
120
109
152
149
157
136
Available head, LCX with standard pump (nom. flow rate) AND
kPa
144
135
120
119
137
130
Uprated type of pump - OR / AND version
Available head, LCX with uprated pump (nom. flow rate) OR
kPa
179
189
173
170
189
258
Available head, LCX with uprated pump (nom. flow rate) AND
kPa
179
193
181
185
201
194
Uprated type of pump - OR / AND (FC) version
Available head, LCX F with uprated pump (nom. flow rate) OR
kPa
113
129
100
78
-
164
Available head, LCX F with uprated pump (nom. flow rate) AND
kPa
115
139
116
104
-
121
Expansion tank
dm
3
12 24 24 24 - 24
LCX
214
244
274
294
324
364
Standard type of pump - OR / AND version
Available head, LCX with standard pump (nom. flow rate) OR
kPa
150
173
170
152
137
131
Available head, LCX with standard pump (nom. flow rate) AND
kPa
124
177
178
163
150
143
Uprated type of pump - OR / AND version
Available head, LCX with uprated pump (nom. flow rate) OR
kPa
237
293
289
271
256
233
Available head, LCX with uprated pump (nom. flow rate) AND
kPa
188
210
210
195
182
177
Uprated type of pump - OR / AND (FC) version
Available head, LCX F with uprated pump (nom. flow rate) OR
kPa
128
189
207
175
148
141
Available head, LCX F with uprated pump (nom. flow rate) AND
kPa
103
110
132
103
79
72
Expansion tank
dm
3
24 24 24 24 24 24
In the case of the dual pump - combined operation option, the advanced type of microprocessor is
mandatory, since it controls the switching on of the second pump according to the number of partialization
steps required at every moment; this means that the unit will operate in a cost-effective manner for most
of its life given that, based on well-known analyses, chillers operate under a regimen of partialization for
97% of their lifetime.