Dimplex RXPW4 User Manual

Installation and Operating Instructions

4 Zone Wall Mounted Pilot Wire Controller
Model No. RXPW4

Dimensions (mm)

Height Width Depth

120 85 31

THESE INSTRUCTIONS SHOULD BE READ AND RETAINED FOR FUTURE USE

November 2005—Issue 1

IMPORTANT SAFETY ADVICE

WARNING—This product must be installed
by a competent person or electrician in
conjunction with the current IEE Wiring
Regulations and relevant Building
Regulations

• DO NOT cover or obstruct the air inlet
or air outlet vents

• DO NOT recess the unit in to a wall,
as this will cause overheating and

potentially be a fire risk

• DO NOT install the unit in the

immediate vicinity of a bathroom or
swimming pool

Pilot Wire Connection

IMPORTANT

Do NOT connect the pilot wire to earth

Care should be taken with the installation of the pilot wire(s)
as when switching to background (setback) they become
energised at 240V although only at a current of 1mA.
In every case a suitable means of isolation must be
provided for the pilot wire and marked to indicate that two
sources of supply may be present at the heater.

Where pilot wires are installed separately from the heater
final sub-circuit they should be protected, double insulated
and carry their own integral earth continuity conductor.
Note: Pilot wire installations are appropriate for single
phase connection only

General Principle

The RXPW4 controller is compatible with Dimplex DuoHeat, EPX, EVS, RPXN,
Calidou and Apollo heaters.

The RXPW4 controller is designed to allow control of multiple Dimplex heaters
from a single point.
Each heater contains a mains cable with a fourth black pilot wire which can be
connected to heaters in a system in series.
The controller uses the pilot wire to conduct a 240V, low current signal to each
heater to change the heater mode (e.g. comfort, background or on, off)
Only one programmer is required for up to 20 heaters on the same zone. (See
Fig.1 below)

= 240V domestic supply circuit

Fig.1

Technical Specification

Installation in an environment with normal pollution levels

• Power supply—230V~AC, +/- 10%, 50Hz

• Functioning temperature—0 to +40ºC

• Storage temperature— -10ºC to 70ºC

• Type of disconnection: micro-switching / 1.C type according to EN 60730-1

• Clock back up in case of power failure—4 hours (approx.) Capacitor

• Consumption—2VA

• Class—II

• Protection—IP30

Installation and Electrical Connection

WARNING—This product must be installed by a competent person or electrician in

The RXPW4 must be wall mounted as follows:

• Remove single screw from underneath unit Fig.2 (1)

• Separate base, remove bottom centre screw from base and remove cover to expose electrical connections Fig.3 (1) and Fig.4

• Install the base with the appropriate screws and fixings for the wall type (not supplied) Fig.2 (2)

• Connect the two supply wires to the corresponding Neutral (6) and Live (8) terminals in the base and connect pilot wire(s) (1-4) Fig.4

• Position the unit on the base, first hooking the two recesses in the inside top over the hooks on the base then gently swing the unit

down so that the pins engage in the connector Fig.2 (3)

• Finally, secure with single fixing screw underneath Fig.2 (1).

Controls

Fig.2

Fig.5

Fig.3 Fig.4

1 - Time (24hr)
2 - Day of the week
3 - Current mode: *

on or off
comfort or background
comfort or frost protection

4 - Mode display for each zone
5 - Modification / override buttons
6 - Validation button

7 - Timed absence mode (e.g.holidays)
8 - Selector switch index mark
9 - Mode selector switch (see Fig.6 and Table 2 below)

Table 1

Symbol Function

*Dependant on configuration (see ‘Programming—Heater Modes’ overleaf)

AUTO Auto mode (heating runs to the preset program for each zone)

Continuous comfort (all zones)

Fig.6

PROG Set the daily programs

Table 2

Continuous set back (all zones)
Continuous frost protection (all zones)
Set the time

Off (no heat output)
Configures heater modes