Technical data

STRATA2

Table 5

5.7.5 connecting remote fault alarms

The boiler includes a normally open volt free contact for each module, which closes in the event of a

lockout failure. See “Electrical Connection Details” section 5.7.

5.8 connecting additional boilers

A second boiler unit does not require an additional RVA 47 manager, as the manager in the first unit is

capable of controlling up to 4 burners. Connect the power supply to the second unit. Install a pair of

screened wires between the PPS connectors of boilers 1 and 2. Observe polarity.

Note: PPS connector = light blue.

5.8.1 connecting third, fourth, fifth, sixth,

seventh and eighth units

These boilers must have RVA 47 managers. To connect RVA 47 manager in additional boilers; the LPB

terminals in each boiler that includes an RVA 47 manager must be linked, i.e. all left hand LPB terminals must

be linked on to another, and all right hand LPB terminals must be linked one to another. Do not link any left

hand terminal to any right hand terminal. Screened cables required.

5.8.2 boiler manager RVA 47 installation

procedure (normally factory fitted)

Complete the following steps to install the manager:

● Remove the blank panel to the right of the display panel.

● Unpack the RVA 47 and insert it in the opening of the control panel.

● Place the first wiring harness with 6-pin connector in the bottom of the RVA 47 and click the other end

into the wiring upstand at the rear of the boiler.

● Place the second wiring harness with the 8-pin connector in the top of the RVA 47 and click the other

end into the wiring upstand at the rear of the boiler.

● Connect the boiler power supply (3 pin male connector) to the RVA 47 unit.

● Connect the PPS communication wire (Orange/Grey) to the female plug connected to the (Blue/

Grey) wire.

The following can now be connected as necessary:

SLP DHW pump or 3-way valve Beige

HKP Heating system pump Yellow

PPS Connection to second boiler Blue

LPB Connection to subsequent RVA 47 Mauve

VFO Flow sensor White

SF DHW sensor Clear

AF Outside air sensor or resistor substitute (620 Ω) Black

REO Room unit or thermostat Light blue

H1 Remote enable or (volt free) 0-10 Volt Orange

RFO Return Sensor Clear

* = Compulsory connections. All other connections as necessary.