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page 16

Fig. 6

 1.12 WIRING DIAGRAM

Legend of the wire colors

a

orange

b

= blue

bi = white

g

= yellow

g/v = yellow / green

gr = grey

= brown

n

= black

r

= red

ve = green

Legend for fans speed

W and WR 8

Max. speed = black

Min. speed

= grey

W and WR 10

Max. speed = brown

Min. speed

= black

WD 8

Max. speed = 3

Min. speed

= 4

WD 10

Max. speed = 1

Min. speed

= 2

Ac

= Control equipment

Br

= Burner

Com

= Remote-control panel terminal board

Cs

= Printed circuit

Ea

= Ignition electrodes

Ef

= Flue gas expeller motor

Er

= Flame detection electrode

Ev

= Gas solenoid valve

Fr

= Noise filter

Mv

= Fan motor

Op

= Jumper for auxiliary connections

P

= Differential pressure switch

Ts

= Safety thermostat

Tv

= Fan thermostat

= Fuse

Important:

- Install a disconnection device upline with contact

opening of at least 3 mm.

- Respect the phase-neutral polarity when connecting

the 230 V, ~ 50 Hz, single-phase power supply.

J15

J14

J13

J12

J11

J10

J 9

J 8

J 7

J 6

J 5

J 4

J 3

J 2

J 1

J25

J26

J27

J28

J29

J30

J31

J32

J33

J34

J35

J36

N
L

J23

J24

L   N      1a      N

1a  N

J1

J2

L   N    SB RS

J3

N  1a

P

Ef

NO

NC

C

Ts

Br

Ea

Er

Ev

Ac

K3    K1    K2

T v

L

N

SB

RS

J22

J21

J20

J19

J18

J17

J16

3(U)

1(U)

(4)

(2)

Fr

N

L

230 V ~

50 Hz

Op

Cs

b  = common

max. speed

min. speed

Mv

a g ve g r m b n b i

r

1 2 4 5 6 7 8 9 1 0

Com

g a n

r g r b i

ve b m

9

b  = common

n = max. speed

m = min. speed

0

1

2

3

4

5

6

Mv

Variant connection

engine WD

page 21

to the standard configuration, you should
request them from ACCORRONI S.r.l.

In any case, any increases to the length of the
ducts must respect the limits specified in the
next point.

4.2.2 Duct length limits

If the duct passes directly through an outside
wall that is more than 40 cm thick, an intake and/
or exhaust duct with a diameter of 60 mm that is
1 meter long can be supplied upon request. The
length of the ducts must not exceed the limit of
6 meters, considered as the sum of the lengths
of both ducts (for example, 3 m of intake duct +
3 m of exhaust duct, etc.), otherwise the resulting
pressure drop may not allow the unit to function

properly, thus triggering the differential pressure
switch.

It should be remembered that an elbow in the
duct is the equivalent of a straight segment
of approximately 50 cm.

4.3 OUTSIDE POSITIONING OF THE FLUE

GAS EXHAUST TERMINAL

The position of the outside exhaust terminal for
combustion products with respect to windows,
ventilation openings, etc. must be in compliance
with the requirements of current applicable
regulations.

If the air heater is installed in rooms on the
ground floor and the exhaust faces sidewalks at
the level of pedestrians, a special protection

Fig. 13

POSITION (WR and WD)

min. 20 cm

Duct

Outside air intake

WD

WR

Fig. 14

POSITION (W)

min.20 cm

Fig. 15

DEFINITION OF “TYPE” IN THE REGULATIONS

Example showing the WR version - viewed from above

Type C

52

 - Outside air intake and flue gas

exhaust terminals that are not close
together. They may even be on different
walls of the building.

Type C

12

 - Outside air intake and flue gas

exhaust terminals that are close together.

Содержание W

Страница 1: ...A2B srl Via d Ancona 37 60027 Osimo An Tel 071 723991 Fax 071 7133153 Web Site www accorroni it E mail a2b a 2 b it Technical information W WR WD Gas fired convection heaters with fan W WR WD...

Страница 2: ......

Страница 3: ...al data table 7 1 10 Dimensions WR and WD versions 8 page 36 Gas fired convection heaters with fan W WR WD series Models 8 10 Technical Information Code 25259501 GB Rev 3 10 05 05 WARNING Whentheburne...

Страница 4: ...open and the electric power supply is on 10 3 2 The instructions to the control panel functions which follow refer to fig 35 a Turn the room thermostat knob E clockwise to the maximum value b Turn swi...

Страница 5: ...e user to carry out the operations indicated in point 11 1 of this manual at least once every two months 9 2 YEARLY INSPECTION 9 2 1 Control and safety devices WARNING Specific technical skills are re...

Страница 6: ...this solution would present technical or functional advantages For ceiling installation WR version in rooms where there is not enough free space on the walls For ceiling installation with duct con nec...

Страница 7: ...d a combustion chamber which houses an atmospheric burner which generates an axial flame The combustion products are exhausted outdoors by a centrifugal fan The ventilation unit which is made up of tw...

Страница 8: ...e the remodelingofbuildingunitsasresidences offices stores orworkshopsiscomplicatedbyaseriesof technical and structural problems that make it difficult to install a traditional heating system These sy...

Страница 9: ...first checking the on off valves on the delivery line Completely bleed off any residual air and restart the unit b Thegassolenoidvalvesdonotopenbecause the coils are malfunctioning or their electrica...

Страница 10: ...tch does not reset the contacts to the proper position see point 8 4 d The flue gas expeller fan s motor has failed and the differential pressure switch will not allow startup to proceed Change the fa...

Страница 11: ...y plastic caps and then using the point of a screwdriverasalevertoreleasethefastening springs in the rear d Remove the 2 screws which attach the gas supply pipe connector to the combustion chamber fig...

Страница 12: ...ses and about the importance of periodic tests which must be performed at least once every year by skilled personnel 6 GAS TYPE CHANGE 6 1 SWITCHING FROM GAS IN THE SECOND GROUP NATURAL GAS TO GAS IN...

Страница 13: ...ressure of 20 mbar Instead if gas from the third group is used LPG first carry out the operations described in point 6 1 5 1 4 Check that the gas on off valves on the meter and on the air heater are o...

Страница 14: ...the wall with a center distance of 120 mm Insert the screw anchors and attach the rear part of the panel to the wall Put the front part of the panel back by snapping it in place Ifyoushouldneedtoinse...

Страница 15: ...R and WD WARNING For your safety due to the weight of the unit and the possible difficulties of installingit itisadvisabletouseamechanical hoisting device for positioning the air heater For these same...

Страница 16: ...ts must be made on the free ends opposite the wind protection terminals Make sure that they are cut squarely and trim off any burrs NOTE The exhaust flue is the longer of the two c Insert the ducts in...

Страница 17: ...R and WD Once the unit s position has been determined bend the supplied paper template on the dashed line and apply it to the ceiling with adhesive tape fig 17 a Indicate the position of the four hole...

Страница 18: ...from ACCORRONI S r l In any case any increases to the length of the ducts must respect the limits specified in the next point 4 2 2 Duct length limits If the duct passes directly through an outside w...

Страница 19: ...between the rear part of the unit and the wall so as to permit correct air intake and to allow the filter to easily be removed for cleaning fig 13 For the WD version make sure that the air intake sys...

Страница 20: ...k making sure to observe the instructions reported on the box indicated by the special graphic symbols When delivered check that no visible damage on the packing and or on the appliance has occurred d...

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