Little Giant EC-1-DV User Manual

EC-1-DV ‘Suction Lift’ Condensate Pump
The EC-1-DV model is designed to accommodate multiple electrical requirements within one pump.
The DV suffix indicates that the pump is capable of operating from a wider range of supply voltages
to maintain consistent performance. Similar to our EC-1 model, this model incudes improved noise
reduction, reliable solid-state switching technology, and easy to install mounting brackets to create a
pump that benefits contractors, installers, and end-users.
• Normally-closed relay rated at 8 A resistive - 250 V
alarm
• 21 dB(A)
• 6 mm pump discharge outlet
• Elastomeric mounting grommets on pump housing
bracket
• Elastomeric passive vibration isolator used to
dampen pump vibration
• Separate wall bracket for pump and reservoir
(included)
• Thermal protection: 80 °C
• 1.5 m power cable
• 1 m communications cable (pump to reservoir)
• Ambient temperature range: 0 °C - 60 °C
• Maximum water temperature: 60 °C
• Clear reservoir for instant visual inspection of water level, float, and filter
• Hall effect on/off level sensors with high water safety sensor feature
• Extra-large filter screen for longer intervals between cleaning
• Multi-step drain hose adapter (14 mm, 16 mm, 18 mm, and 20 mm)
• Simple to open reservoir for easy maintenance
• Height: 104mm Length: 46mm Width: 58mm
Suction Lift:
1m
Shut Off:
10m
Liquid Temp:
60°C
Discharge:
6. mm
Electrical:
230V, 50Hz
MODEL:
553502
NOTE: Use on A/C units up to 6kW…
No larger!
IMPORTANT
INSTALLATION BY HVAC-R
PROFESSIONALS ONLY

Little Giant EC-1-DV Specifications

General

Model	EC-1-DV
Category	Water Pump
Power Source	Electric
Voltage	115V
Switch Type	Automatic
Material	Thermoplastic
Discharge Size	3/8 in.
Outlet Size	3/8 in.
Cord Length	6 ft
Type	Condensate Pump

Summary

Introduction to EC-1-DV Condensate Pump

Introduction

Provides essential information for safe ownership and operation of the Little Giant pump.

Safety Guidelines

General Safety Precautions

Critical safety rules to prevent personal injury, property damage, and ensure correct usage.

Installation Procedures

Installing the Collection Reservoir

Step-by-step guide for positioning and securing the reservoir, ensuring proper drainage.

Installing the Control Unit/Pump

Instructions for mounting the pump unit, emphasizing its non-submersible nature and water protection.

Drain Hose-to-Reservoir Inlet Tubing

Guidance on connecting the air handler drain hose to the reservoir inlet, including adapter use.

Reservoir-to-Pump Tubing

Connects reservoir to pump intake, ensuring secure connections and no kinks in the tubing.

Pump Discharge Tubing

Instructions for connecting discharge tubing to the pump and directing it to a suitable drain.

Vent Tubing

Connects vent tubing from reservoir cover to prevent overflow, ensuring upward routing.

General Installation Notes

Final checks for component positioning, wire/tubing management, and connection testing.

Electrical Connections

Safe wiring procedures for connecting the pump to power, adhering to electrical codes and standards.

Power Supply and Overflow Protection

Power Cord Connections

Details on connecting power cord wires, color coding, and recommended fuse ratings for different models.

Overflow Protection Switch Connections

How to wire the overflow switch for normally closed (compressor off) or normally open (alarm) configurations.

Testing Overflow Protection Switch

Procedure to test the overflow protection switch operation after installation is complete.

Service Instructions

Reservoir Cleaning and Maintenance

Procedures for cleaning the reservoir, mesh screen, and float, and reassembly instructions.