Liebert Extreme Density Chiller XDC - Manual (Page 31)

Piping and Filling with Refrigerant: R-134a and R-407c Circuits
25
Figure 25 Installation data—Lee-Temp, one-circuit, high ambient six-fan model
Mounting Instructions
1. Uncrate carton and inspect for damage to
condenser and condenser control panel.
2. Assemble legs per instructions as shown.
3. When piping long, vertical rises, oil traps are
recommended on hot gas line every 25 ft. (7.6m)
(see 2.6 Install Double Discharge Risers).
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 200 ft. (61m) of
equivalent piping length away from Liebert XDC unit
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 installation is limited to a maximum of
15 ft. (4.6m) location below Liebert XDC unit.
8. Do not run piping or wiring in the path of air flow
as this 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 field-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 Lee-Temp receiver assembly and each leg to
condenser frame using hardware provided. Receiver
can be mounted on either side of condenser.
13. 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.
1 Built-in condenser control box. See electrical drawin
for details and field wiring.
2 Air-cooled condenser.
3 Piping access cover to be reinstalled when piping is
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 t
receiver. 3/8" nuts (10 total). 3/8" washers (20 total)
6 Terminal block for 2 wire 24 volt interlock connection
Liebert XDC unit and Liebert condenser.
7 Condenser legs - (5) fivelegs for (6) six-fan models.
8 Lee-Temp:
a. Insulated storage receiver - storage
receiver (1) per circuit. Receiver size varies.
b. Dual head pressure control valve assembly
with integral check valve(s) - (1) one per circuit (S
c. Rotalock valve - (1) one per circuit, field-installed.
d. Pressure relief valve - (1) one per circuit, field-inst
e. Liquid level indicator - (1) per circuit
factory-installed on receiver.
Materials Supplied by Liebert
Field-supplied main disconnect switch in
accordance with local codes or main unit
switch ordered as optional equipment
factory-installed in condenser control box.
Electrical service
by others
Ensure piping stays
below electrical box
and does not protrude
See Page 5 for piping connection details
Hot gas line
(Circuit 1)
See Note 14
Note 14
Metal
Clamp
Isolator
Liquid line
(Circuit 1) See Note 14
Liquid return
line to unit
(Circuit 1)
Position elbow to direct
relief valve downward
* Hot gas line to condenser (Circuit 1)
96" (2438mm) receiver
shown; some systems
use smaller receivers
Lee-Temp heater
pad electric
box this end
(See DPN000937,Pg. 3)
* Hot gas line
from unit
(Circuit 1)
* Liquid line from
condenser
(Circuit 1)
DPN000937
Pg. 02, Rev. 09
A D
7
5
C
5
B
See Figure 29 for details on piping connections.