ACV E-tech W 09 Installation, Operating And Servicing Instructions page 4

deScRIptIon oF the SpecIFIcAtIonS:
This wall hung electric boiler is available in 7 models:
• The models Single phase 09 and 15 are supplied with 230 V.
• The models Tri phase 09, 15 , 22, 28 and 36 are supplied with 400 V.
The maximum power can be adjusted for all models by acting on
the switches on the control panel.
The maximum power can be adjusted for this models by acting on
the terminals bridges.
Models
09 single phase
15 single phase
22 tri phase
28 tri phase
36 tri phase
lInInG
The boiler is protected by a steel lining that first of all undergoes
a degreasing and phosphation process before being lacquered
and burnt at 220°C.
heAtInG body
The boiler heat exchanger is constructed from mild steel with
welded joints. It is hydraulic tested under a pressure of 4.5 bar
(maximum working pressure = 3 bar).
heAtInG elementS
Immersion heaters, constructed from stainless steel Incoloy
800 and mounted in the top of the boiler, provide the power
source for the Boiler.
equIpment
The boiler is equipped with all the necessary components to
allow direct connection to a heating system without the need for
a feed and expansion cistern.
These components include; primary 10 litre expansion vessel
(suitable for a system water content of up to 160 litres),
pressure and temperature gauge, safety valve, circulating
pump, low water pressure switch, control and high limit
thermostats, on/off and power level switches.
connectIon
The boiler is suitable for connection to most heating and hot
water systems, with a maximum working pressure of 3 bar and
a maximum temperature of 85°C. It can also be used in multiple
boiler installations allowing greater outputs to be achieved.
The boiler, and connection glands for both the main power supply
and optional external controls are provided, suitable for single
or three phase electrical supply depending upon boiler output
required.
An internal 3 amp MCB is provided to protect the internal
control circuit, from which optional controls can be connected
e.g. internal or external timeclock, room thermostat or
Honeywell Sundial controls.
664Y4700 • D
INTRoDuCTIoN
Adjustable power
Min Max
5.6 kW 8.4 kW
9.6 kW 14.4 kW
14.4 kW 21.6 kW
14.4 kW 28.8 kW
18 kW 36 kW
EN • 4
duAl StAGe theRmoStAt
The temperature of the boiler is controlled by a dual stage
thermostat which is set by the user to give the desired boiler
temperature.
When the boiler has heated up to within 7°C of the set
temperature, the thermostat switches off one power stage and
therefore reduces
the heat input. Thanks to this simple but effective form of
modulation, the boiler has longer working cycles and requires
less stops and starts, thus resulting in a more even temperature
across the boiler.
It also means less wear and tear on components and, importantly
it uses less power once it has reached working temperature.
ceRtIFIcAtIon
The boilers have been manufactured to comply with the following
standards BS EN60335-2-35: 1998, BS EN55014-2:1997
and BS EN50081-1-1: 1992.
leGend
1. Control circuit
2. Relay
3. Timer
4. Control terminals
5. Power terminals
6. Power terminals with fusible 25A or 32A
2
4
1
2
4
1
3
5
3
6