Connecting The Condensate Drain Pump (Option); Electrical Connections - Carrier IdroFan 42KY Installation, Operation And Maintenance Instructions

4.5. Connecting the condensate drain pump (option)

The condensate drain pump can be supplied mounted on the unit as an option. Its technical specifications are as follows:
- Maximum flow of 8.5 l/h for a head height of 2 metres and a maximum pipe length of 5 metres.
- Maximum flow of 7 l/h for a head height of 4 metres and a maximum pipe length of 5 metres.
The operation points are provided in the table below.
Connect a clear drain pipe (not supplied) with an internal diameter of 6 mm between the pump outlet and the wastewater pipe.
Table of actual flow rates for the DE05UCC pump with Ø 6 mm PVC internal pipe:
Discharge
height
1 m
2 m
4 m
10 m
Under operating conditions outside the recommended temperature and relative humidity range (page Fr-1), the discharge
pipe must be insulated to prevent condensation, which could damage the installation and the pump. We recommend using a
transparent colourless PVC type pipe with internal diameter 6 mm/external diameter 9 mm. It is essential to ensure that the pump
connections are sealed. A clamp can be used for this purpose.
Important: Check the unit selection data to determine the maximum condensate flow rate.
Note: This accessory must always be used with a valve control device, to ensure valve control of the high safety device when
the valve is closed (closure of the condensate drains).

4.6. Electrical connections

Wiring diagram for multiple units installation
Incorrect wiring for several units
TABLE OF ACTUAL FLOW RATES (l/h)
Total pipe length (internal Ø, 6 mm)
5 m 10 m
10.4 9.1
8.5 7.8
7.9 7.1
7 6
EN - 7
20 m
8.3
7
6.3
5.3
Correct wiring for several units
30 m
7.3
6.4
5.8
4.9