Servicing Schedule; Instructions For Inspection And Servicing - Lattner Boiler Company Alkon 90 Installation And Servicing Manual

Alkon 90 condensing gas boiler

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Table of Contents

INSPECTION AND SERVICING SCHEDULE

CAUTION

To ensure the continued safe and efficient

operation of the boiler it is highly

recommended that it is checked at regular

intervals and serviced when necessary, and

that only original spare parts are used.

Regular attention will prolong the life of the

boiler.

DANGER

If the boiler is not checked and serviced

regularly it could cause material and personal

damages.

For this reason LATTNER recommends that a ser vicing

contract should be made with our authorized After Sales

Service Assistance Centre.

The boiler must have regular maintenance and cleaning in

order to ensure reliable and efficient operation. Regular

attention will prolong the life of the boiler.

The frequency of servicing will be determined by the service

engineer and will depend on the appliance's state of condition.

TABLE OF THE RESISTANCE VALUES IN FUNCTION OF THE HEATING SENSOR (SR) AND RETURN HEATING SENSOR

TEMPERATURE (SRR)

T° F (C)

32 (0)

32755

50 (10)

20003

68 (20)

12571

86 (30)

8112

104 (40)

5363

122 (50)

3627

140 (60)

2504

152 (70)

1762

176 (80)

1263

194 (90)

920

Relation between the temperature (°C) and the nom.

resistance (Ohm) of the heating sensor SR and the return

heating sensor SRR.

33.8 (1)

35.6 (2)

37.2 (3)

31137

29607

28161

19072

18189

17351

12019

11493

10994

7775

7454

7147

5152

4951

4758

3491

3362

3238

2415

2330

2249

1703

1646

1592

1222

1183

1146

892

865

INSTRUCTIONS FOR INSPECTION AND

SERVICING

Before servicing always carry out the following steps:

Disconnect the mains electricity supply.

Separate the appliance from the electrical supply by me-

ans of a separating device with an opening contact of at

least 3 mm (for example safety devices or power switches)

and ensure yourself that it cannot be accidentally reinser-

ted.

Close the on-off valve fitted upstream of the boiler.

If necessary, and in function of the type of work to be car-

ried out, close any on-off valves fitted on the CH flow and

return pipes, as well as the cold water inlet valve.

Remove the appliance's front panel.

After having carried out all the necessary maintenance work

always follow these steps:

Open the CH flow and return valves as well as the cold

inlet valve (if previously closed),

Purge and, if necessary, proceed with restoring the hea-

ting system's pressure until a pressure of 0,8/1 bar is rea-

ched.

Open the on-off gas cock.

Reconnect the appliance to the electrical supply and switch

on the mains electrical supply.

Test for gas soundness, on the gas side and on the water

side.

Replace the appliance's front panel.

39.2 (4)

41 (5)

26795

25502

16557

15803

10519

10067

6855

6577

4574

4398

3119

3006

2171

2096

1539

1488

1110

1075

839

814

790

Ex:

At 101 °F (25°C), the nominal resistance is 10067 Ohm

At 194 °F (90°C), the nominal resistance is 920 Ohm