Liebert XDC user manual See for details on piping connections

Piping and Filling with Refrigerant: R-134a and R-407c Circuits

Figure 25 Installation data—Lee-Temp, one-circuit, high ambient six-fan model

				Field-supplied main disconnect switch in
* Liquid line from				accordance with local codes or main unit
condenser				switch ordered as optional equipment
(Circuit 1)				factory-installed in condenser control box.
B
* Hot gas line
from unit￿
(Circuit 1)
5
Lee-Temp heater
pad electric		C
box this end
(See DPN000937,Pg. 3)
* Hot gas line to condenser (Circuit 1)			5	Hot gas line	Electrical service
96" (2438mm) receiver			7	(Circuit 1)	by others
shown; some systems			Liquid return	See Note 14	Ensure piping stays
use smaller receivers	A	D	line to unit		below electrical box
				Liquid line
Position elbow to direct			(Circuit 1)	(Circuit 1) See Note 14	and does not protrude

relief valve downward	Metal		Isolator	See Page 5 for piping connection details
Mounting Instructions	Clamp
		Note 14
1. Uncrate carton and inspect for damage to
condenser and condenser control panel.			Materials Supplied by Liebert
2. Assemble legs per instructions as shown.
			1 Built-in condenser control box. See electrical drawin
3. When piping long, vertical rises, oil traps are
recommended on hot gas line every 25 ft. (7.6m)				for details and field wiring.
(see 2.6 Install Double Discharge Risers).			2	Air-cooled condenser.
4. Wire according to electrical diagram on inside			3 Piping access cover to be reinstalled when piping is
of condenser control box and in accordance with
			4 3/8"-16 x 3/4" long bolts - (20 total) attaches legs to
all local codes.
5. All condenser locations more than 200 ft. (61m) of				condenser frame.
equivalent piping length away from Liebert XDC unit			5 3/8"-16 x 1-1/4" long bolts - (10 total) attaches legs t
must consult factory for special piping considerations.				receiver. 3/8" nuts (10 total). 3/8" washers (20 total)
6. Field to size refrigerant lines so as not to exceed
			6	Terminal block for 2 wire 24 volt interlock connection
2°F (1.1°C) saturation loss for total equivalent length
(do not use connection sizes to determine line sizes).				Liebert XDC unit and Liebert condenser.
7. Condenser installation is limited to a maximum of￿			7	Condenser legs - (5) fivelegs for (6) six-fan models.
15 ft. (4.6m) location below Liebert XDC unit.			8	Lee-Temp:
8. Do not run piping or wiring in the path of air flow
				a. Insulated storage receiver - storage
as this will hamper the system performance.
				receiver (1) per circuit. Receiver size varies.
9. Install field-supplied inverted traps on hot
				b. Dual head pressure control valve assembly
gas lines between condenser and field piping.
				with integral check valve(s) - (1) one per circuit (S
10. All other piping field-supplied and field-connected.
				c. Rotalock valve - (1) one per circuit, field-installed.
11. Inverted traps must be installed to allow proper
				d. Pressure relief valve - (1) one per circuit, field-inst
clearance to fully open condenser control box door
				e. Liquid level indicator - (1) per circuit
and in accordance with local electric codes.				factory-installed on receiver.
12. Secure Lee-Temp receiver assembly and each leg to
condenser frame using hardware provided. Receiver				DPN000937
can be mounted on either side of condenser.
				Pg. 02, Rev. 09
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			See Figure 29 for details on piping connections.
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.

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