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Frequently Asked Questions - Performance & Characteristics

1 What is the maximum pipe run and what are the pipe sizes for my unit?

Answer Please refer to sales brochure, which lists this information

2 What interconnecting wiring is required and what are the start and run currents for my unit, what power supply is required?

Answer Please refer to sales brochure and enquiry data section

3 What is the refrigerant pre-charge and additional refrigerant charge for my unit?

Answer Please refer to enquiry data section

4 What are the dimensions of my unit?

General dimensions of units can be found in our Product Guide and on the sales brochure - April 2001. For detailed information please see the technical manual specific to your unit, which can be downloaded from this site. (see downloads section)

5 What are the noise levels and air flow for my unit?

Answer Please refer to enquiry data section

6 Is there a facility for introducing fresh air into Mitsubishi Heavy Industries units?

Fresh air can be introduced into all our indoor units excluding the SR and FDK and FDE ranges. For detailed information please see the technical manual specific to your unit, which can be downloaded from this site. (see enquiry data section)

7 Is the KX4 system auto changeover from heat to cool?

Auto changeover is available on our 2-pipe system, however, it is a unanimous decision only (not partial or majority). For further information please contact the Purley office.

8 Does the Wired Remote Controller RCE-1 include a 7-Day Programmable Timer?

The RCE-1 includes a 7-Day / 24 Hour Programmable Timer, with 2 'on' functions and 2 'off' functions each 24 hour period.   Each day can be set to different on & off times, with day omission if required.

The RCE-1 can be wired to all KX indoor units, all FD-A Spilt and Multi Systems, to SRK63 & 71 systems, to STM Multi Cassette units, and, via and adaptor, to SRK Inverter indoor units (limited diagnostic functions on SRK systems).

9 How far do the lift pumps in the units pump?

Condensate lift pumps are included in all units which fir in, or above the ceiling, i.e. Cassette units (FDTA & FDTCA), and Ducted units (FDUMA, & FDQMA). The maximum lift height is 600mm from the outlet of the unit. It is important not to exceed the stated pipe diameter for the discharge piping, to avoid flood-back when the unit is switched off. If a higher pump lift is required, HRP stocks an extensive range of Condensate Pumps.