Table of Contents
Advertisement
13.6.10 After installing and connecting the water and gas unit check gas and water connections for air-tightness, see p. 7.4.6 and p. 7.3.7. Gas and
water leakages are unacceptable.
13.6.11 Check the appliance's operation with a new water and gas unit.
Replacement of the water and gas unit's valve block
13.7
13.7.1 Remove the casing, see p.13.1.
13.7.2 Disconnect the cables from the valve block 14 of the water and gas unit 3.
13.7.3 Screw off the nut of the pipe of the flame igniter 13 from the valve block 14.
13.7.4 Unscrew two screws fixing the valve block 14 to the body frame of the gas unit 15 and remove the block.
13.7.5 Install a new valve block and check the joints subject to disassembling on air-tightness, see p. 7.4.6.
13.7.6 Check the appliance's working capacity with the new valve block.
Replacement of the water and gas unit's water unit
13.8
13.8.1 Remove the casing, see p. 13.1.
13.8.2 Unscrew two captive nuts from the water inlet and outlet fittings of the water unit 17.
13.8.3 Unscrew two screws fixing the water unit 17 to the body frame of the gas unit15 and remove it.
13.8.4 Install a new water unit.
13.8.5 Check the joints subject to disassembling on air-tightness, see p. 7.3.7. Water leakage is unacceptable.
13.8.6 Check the appliance's operation with the new water unit.
13.9
Replacement of the water unit membrane (membrane assembled with the plate)
13.9.1 Effectuate the works listed in pp. 13.8.1-13.8.3.
13.9.2 Unscrew six screws fixing the cover of the water unit 17 with the body frame, replace the membrane that is out of order (the membrane with a
plate) for a new one.
13.9.3 Assemble the water unit.
13.9.4 Effectuate the works listed in pp 13.8.4-13.8.6.
13.10 Replacement of the water temperature sensor
13.10.1 Remove the casing, see p. 13.1.
13.10.2 Disconnect the connector of the water temperature sensor 19 from the electronic control block 4.
Advertisement
Table of Contents
