Technical Specifications

Heat Rejection
102
Figure 104 Installation data—Liebert Lee-Temp, one-circuit, high ambient six-fan model
Field-supplied main disconnect
switch in accordance with local
codes or main unit switch
ordered as optional equipment
factory-installed in condenser
control box
* Liquid line from
condenser
(Circuit 1)
96" (2438mm) receiver
shown; some systems
use smaller receivers
* Hot gas line
from unit
(Circuit 1)
Liquid return
line to unit
(Circuit 1)
Liquid line (Circuit 1)
See Note 14
Note 14
DPN000937
Pg. 2, Rev. 11
See
Note 14
Isolator
Metal
Clamp
Hot gas line
(Circuit 1)
See Note 14
Electrical service
by others
Ensure piping stays
below electricalbox and
does not protrude
C
A
D
Position elbow
to direct relief
valve downward
* Hot gas line
to condenser
(Circuit 1)
Liebert Lee-Temp Heater
Pad Electric Box
this end (See
DPN000937, Pg. 3)
(See Page 5 for piping
connection details)
5
5
7
B
Factory-Supplied Material
1. Built-in condenser control box. See electric drawing
for details and field wiring.
2. Air-cooled condenser
3. Piping access cover to be reinstalled when piping is
completed.
4. 3/8"-16 x 3/4" long bolts, 20 total; attaches legs to
condenser frame
5. 3/8"-16 x 1-1/4" long bolts, 10 total; attaches legs to
receiver; 3/8" nuts, 10 total; 3/8" washers, 20 total
6. Terminal block for 2-wire 24V interlock connection
between Liebert XDC and Liebert condenser
7. Condenser Legs: 5 legs for six-fan models
8. Liebert Lee-Temp:
A. Insulated storage receiver - storage receiver, one
per circuit; receiver size varies
B. Dual head pressure control valve assembly with
integral check valve(s), one per circuit (see
Note 14)
C. Rotalock valve, one per circuit, field-installed
D. Pressure relief valve, one per circuit,
field-installed
E. Liquid level indicator, one per circuit,
factory-installed on receiver
See Figure 108 for details on piping connections.
Mounting Instructions
1. Uncrate carton and inspect for damage to condenser and
condenser control panel
2. Assemble legs per instructions as shown.
3. Double risers are required when hot gas vertical rise is
15 ft (4.6m) or more. Refer to Liebert XDC user manual
for double riser details.
4. Wire according to electrical diagram on inside of
condenser control box and in accordance with all local
codes.
5. All condenser locations more than 200ft. (61m) of
equivalent piping length from Liebert XDC must consult
factory for special piping considerations.
6. Field to size refrigerant lines so as not to exceed 2°F
(1.1°C) saturation loss for total equivalent length (do not
use connection sizes to determine line sizes).
7. Condenser must be installed above or at the same level
as the Liebert XDC.
8. Do not run piping or wiring in the path of air flow
because it will hamper the system performance.
9. Install field-supplied inverted traps on hot gas lines
between condenser and field piping.
10. All other piping field-supplied and connected.
11. Inverted traps must be installed to allow proper
clearance to fully open condenser control box door and in
accordance with local electric codes.
12. Secure Liebert Lee-Temp receiver assembly and each
leg to condenser frame using hardware provided.
Receiver can be mounted on either side of the condenser.
13. Liebert Lee-temp Item B is shipped as a pre-piped
assembly shipped loose for field installation. Item C is
shipped loose for field installation.
14. Fasten liquid and hot gas lines using flat surface clamps
with isolators (field-provided). Support field piping
separately to avoid coil damage and loss of charge.
15. Relieve pressure at access port. Replace access port
fitting with relief valve before charging system.