Replace The Restrictor - Worcester Greenstar 1000 GR1000W 24 C NG Installation And Maintenance Instructions Manual

Replacement parts
Assemble the gas air pipe and the fan
Ensure that the back flow prevention valve sits properly between the gas
air pipe and the fan.
2
1
Fig. 150 Assemble of the gas air pipe
[1] Screws
[2] Gas air pipe
▶ Tighten two screws ( Chapter 10.8, page 67).
During the replacement of the gas air pipe:
▶ Check if the burner door seal is assembled properly.
▶ After the complete assembly, check the gas leakage with the gas
leakage control equipment.
1
Fig. 151 Assembly of the screws on the burner door
[1] Screws
▶ Tighten two screws (Torx T25) [1].
▶ Connect all cables.
▶ Connect the condensate hose to the condensate trap.
▶ Connect the gas hose to the venturi.
76

10.18 Replace the restrictor

Disassemble the restrictor
Fig. 152 Disassembly of the gas hose and nut
▶ Take out the gas hose from the restrictor
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▶ Rotate the gas nut counter-clockwise and take it out.
1
Fig. 153 Disassembly of the restrictor
[1] Restrictor
▶ Pull the restrictor [1] upwards and turn it off the gas valve.
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1.
2.
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Greenstar 1000 – 6721835943 (2023/08)