Worcester 28i Junior Especificações descarregar pdf (Página 5)

Remove multiway

connector from board

position ST16. Test

resistance across pins

16 and 17 ( yellow

wire). Is it between 1

kOhm and 30 kOhm?

Test resistance across

contacts 12 and 13

(red wire). Is it

between 1 kOhm and

30 kOhm?

Is there continuity

from individual pins

16 and 17 to DHW

sensor?

Check or replace

DHW sensor.

Is there continuity

from individual

contacts 12 and 13 to

CH sensor?

Repair or replace

harness.

Repair or replace

harness.

Is the multiway

connector at board

position ST16 pushed

fully home on to the

board?

Push fully home

Yes

Check the DHW

sensor. Is it correctly

fitted onto the pipe

with heat conductive

paste between the

pipe and sensor?

Yes

Re-fix sensor onto pipe

TEST E

Check or replace

CH sensor.

Test resistance across

contacts 14 and 15

(green wire).

Is it open circuit?

Turn off electrical

supply.

Remove fan connector

from board position

ST1.

Test resistance across

contacts to black &

white cables.

Is it between 75 and

175 ohms?

Check/repair fan

harness or repalce fan.

Air pressure switch

is shorting.

Check tubes for

blockage or replace

switch.

Yes

Test resistance across

contacts to black &

red cables. Is it

between 30 and 90

ohms?

Yes

3. Technical Data

MAXIMUM AVAILABLE PUMP HEAD

BOILER OUTPUT HEAD MIN. FLOW RATE

kW Metres L/min. °C

8 4.5 10.4 11

23.5 2.2 18.3 18

27.5 2.0 18.3 21

Table 3

MECHANICAL SPECIFICATIONS 24i 28i

CENTRAL HEATING FLOW - COMPRESSION 22mm 22mm

RETURN - COMPRESSION 22mm 22mm

COLD WATER INLET - COMPRESSION 15mm 15mm

DOMESTIC WATER FLOW - COMPRESSION 15mm 15mm

GAS INLET Rp

⁄4 Rp

⁄4

RELIEF VALVE DISCHARGE 15mm 15mm

CASING HEIGHT 600mm 600mm

CASING WIDTH 400mm 440mm

CASING DEPTH 325mm 325mm

WEIGHT - LIFT 22kg 23.5kg

WEIGHT - PACKAGED 37kg 40kg

WEIGHT - DRY 34.7kg 37.5kg

Table 4

FLUE DETAILS

HORIZONTAL FLUE

WALL HOLE DIAMETER EXTERNAL FIX mm 110

INTERNAL FIX mm 130

STANDARD FLUE MINIMUM LENGTH mm 275/*425

MAXIMUM LENGTH mm 725

EXTENDED FLUE MAXIMUM LENGTH mm 3000

FLUE ASSEMBLY DIAMETER mm 100

VERTICAL FLUE

VERTICAL DUCT MAXIMUM LENGTH mm 3000

TERMINAL ASSEMBLY mm 1100

Table 2.

FLOW/RETURN

DIFFERENTIAL

* NOTE : Minimum uncut length

NOMINAL BOILER RATINGS (10 Minutes After Lighting)

BOILER ADJUSTED FOR G20 (Natural Gas)

OUTPUT INPUT (Net) GAS RATE

kW kW m bar. m

8.0 9.5 1.2 1.00

27.5 30.0 14.7 3.17

BOILER ADJUSTED FOR G31 (Propane)

8.0 9.5 3.4 0.39

27.5 30.0 35.3 1.23

Table 1. 28i

BURNER

PRESSURE

NOMINAL BOILER RATINGS (10 Minutes After Lighting)

BOILER ADJUSTED FOR G20 (Natural Gas)

OUTPUT INPUT (Net) GAS RATE

kW kW m bar. m

7.5 9.5 1.4 1.00

23.5 25.9 13.6 2.74

BOILER ADJUSTED FOR G31 (Propane)

7.5 9.5 4.6 0.39

23.5 25.9 35.0 1.06

Table 1. 24i

BURNER

PRESSURE

Natural Gas: Net Input = Gross Input x 0.901 LPG (Propane): Net Input = Gross Input x 0.921

1 2 3 4 5 6 7 8 9 10 ... 21 22

Comentários a estes Manuais

Sem comentários

Worcester 28i Junior Especificações Página 5

Comentários a estes Manuais

Manuais e produtos relacionados com Termóestatos Worcester 28i Junior