Site Preparation and Installation
29 Liebert
®
Mini-Mate2
™
5.4.3 Condensate Pump Kit Installation
All Units
1. Refer to the instructions and drawings supplied with the pump.
2. Disconnect all power to the unit.
3. Remove the access panels.
4. Use mounting brackets if the pump is not attached to ductwork. Pump inlet must be at least
1/2 in. (13mm) below evaporator drain. Mount the pump to the unit exterior as shown in
Figure 17.
5. Connect 3/4 in. flexible rubber tubing with a hose clamp (both supplied with pump kit) to the
3/4 in. hose barb fitting on the pump.
6. Connect the evaporator drain to 3/4 in. NPT female hose assembly on the pump inlet using 3/4 in.
hard pipe. Do not install a trap in the line. Provide at least 1 in. (25mm) clearance between the
access panel and the drain line. Support the piping as required.
7. Connect a drain line to the pump discharge 3/8 in. O.D. Cu (compression fitting provided).
8. Connect electric leads L1 and L2 to the line voltage terminal block. Connect the ground lead to
the lug near the terminal block.
9. Connect wires from the auxiliary pump contacts to terminals TB1-8 and TB1-9 to shut down the
unit upon high water condition in the pump.
10. Reinstall the access panels.
11. Reconnect power to the unit.
12. Run the unit to make sure the pump works properly. Operate the pump and check the drain line
and discharge line for leaks. Correct as needed.
Figure 17 Condensate pump
WARNING
Risk of electric shock. Can cause injury or death.
Disconnect all local and remote electric power supplies before working within the unit.
Line side of factory disconnect remains energized when disconnect is Off.
NOTE
Remove the shipping band from the float switch in the evaporator pan
Drain Line
(field supplied)
Power Supply from
Electric Service Power
Block in Unit
Condensate Pump
Support Brace
Unit
(Optional)
Humidifier Supply
Connection
7/8" (22.2mm) Dia.
Electrical Entrance or
Condensate Pump
Connection
3/4" (19mm) N.P.T. Female
Condensate Drain Connection
Drain is trapped inside unit
Field-Supplied
Rigid Piping
(support as required)
3/4" (19mm) FPT
Customer
Connection
Flexible Rubber Tubing
3/4" (19mm)
Hose Barb
Supplied on
Pump Tank
Condensate Pump
NOTE:
3/4" (19mm) Flexible Rubber Tubing Assembly (supply with pump kit)
must be installed on pump end of rigid piping (support as required).
Back of Unit
DPN000174
Rev. 0
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