Technical data

25
Controls Installation
The RVA46 and RVA47 controls are designed for panel
mounting. It is recommended that the controls are mounted
with the fascia exposed externally for ease of use.
All electrical connections use polarised coloured screwed
terminal blocks to ensure that once installed and
commissioned, connections are easy to relocate in their
original position, if removed.
The LPB bus communication cable between controllers and
boiler can be extended to a maximum 1400 metres length.
Cable should be (non interchangeable) two core twisted
with 1.5mm2 CSA.
Room temperature sensors, QAA10, QAA50 and QAA70,
may be located up to 50 metres from their respective RVA
controller. Wiring between controllers and the room sensors
using 2 wire (interchangeable) cable. Max 1.5mm2 CSA.
External air sensor QAC34 may be located up to maximum
120 metres from the RVA controller. Usually connected to
the RVA47, wiring using 2 wire (interchangeable) cable.
Max 1.5mm2 CSA.
Water temperature sensors, QAZ21, may be located up
to maximum 120 metres from the RVA controller.
Wiring using 2 wire (interchangeable) cable. Max 1.5mm2 CSA.
Pump outputs are volt free contacts rated to 2 amps 230V
max. It is strongly recommended that pumps and mixing
valves are connected via contactors, where higher running
currents will be experienced.
Wiring Diagram
Cascade and Heating Zone Controls
Panel cut-out dimensions for RVA46 & RVA47 controllers
The mechanical mounting allows fitting in panel
fronts that have a thickness of 2mm to 10mm.