AristonThermoUK
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2 years ago
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COMBI A - Instruction Manual

  • Text
  • Wwwaristoncom
  • Manual
  • Instruction
  • Combi
  • Installation
  • Electrical
  • Display
  • Appliance
  • Valve
  • Heating
  • Boiler
  • Flue

18.3 Access to the Water

18.3 Access to the Water Circuit Important! Before any component is removed, the boiler must be drained of all water. 18.3.1 Drain down DHW : close the DHW inlet tap and open a tap on the installation / CH : Close the flow and return isolating valve and open the pressure relief valve. 18.3.2 Removing the 3 way valve 1. Carry out step 18.1.1 and 18.1.2; 2. Disconnect the wire from the 3 way valve; 3. Remove the clip “P2” and the 3 way valve motor (see Figs. 80 and 81); 4. Unscrew the two screws “P3” (Fig. 85) and remove the 4 clips “Q1* - Q4” (see Figs. 82 to 84); 5. Remove the 3 way valve body by pulling it toward you (see Fig. 86); 6. Reassemble in reverse order; * See the paragraph 18.3.1 before removing the clips. P2 Q4 Fig. 81 P1 Fig. 84 Q1 Q2 Q3 Fig. 82 Fig. 80 P3 Fig. 83 Fig. 85 Fig. 86 18.3.3 Removing the float of the flow switch 1. Remove the clip “Q1” fixing the brass connector (see Fig. 82); 2. Disconnect the connecting pipe; 3. Pull down the brass connector and catch simultaneously the float (see Figs. 87 & 88); 4. Reassemble in reverse order; Fig. 87 Fig. 88 48

18.3.4 Removing the secondary heat exchanger 1. Carry out step 18.1.1 and 18.1.2; 2. Remove the 3 way valve motor as in step 18.3.2; 3. Disconnect the expansion vessel pipe. 4. Unscrew the two fixing screws R and pull the heat exchanger toward you (see Figs. 89 & 90); 5. Reassemble in reverse order; The heat exchanger is so designed that it cannot be remounted incorrectly; R Fig. 89 Fig. 90 18.3.5 Removing the pump 1. Carry out step 18.1.1; 2. Lower the electrical box cover as in step 18.1.2; 3. Remove the PCB cover; 4. Remove the pump plug from the control board and earth plug from earth socket (see Fig. 91) 5. Unscrew the pump nut (see Fig. 92); 6. Remove the clip S2 on the pump volute (see Fig. 93); Fig. 91 Fig. 92 7. Pull the pump toward you and remove the clip S3 securing the pressure gauge (see Fig. 94); 8. Reassemble in reverse order. S2 S3 Fig. 93 Fig. 94 49

MANUALS

AristonThermoUK
Views
2 years ago
Flag

COMBI A - Instruction Manual

  • Text
  • Wwwaristoncom
  • Manual
  • Instruction
  • Combi
  • Installation
  • Electrical
  • Display
  • Appliance
  • Valve
  • Heating
  • Boiler
  • Flue

18.3 Access to the Water

18.3 Access to the Water Circuit Important! Before any component is removed, the boiler must be drained of all water. 18.3.1 Drain down DHW : close the DHW inlet tap and open a tap on the installation / CH : Close the flow and return isolating valve and open the pressure relief valve. 18.3.2 Removing the 3 way valve 1. Carry out step 18.1.1 and 18.1.2; 2. Disconnect the wire from the 3 way valve; 3. Remove the clip “P2” and the 3 way valve motor (see Figs. 80 and 81); 4. Unscrew the two screws “P3” (Fig. 85) and remove the 4 clips “Q1* - Q4” (see Figs. 82 to 84); 5. Remove the 3 way valve body by pulling it toward you (see Fig. 86); 6. Reassemble in reverse order; * See the paragraph 18.3.1 before removing the clips. P2 Q4 Fig. 81 P1 Fig. 84 Q1 Q2 Q3 Fig. 82 Fig. 80 P3 Fig. 83 Fig. 85 Fig. 86 18.3.3 Removing the float of the flow switch 1. Remove the clip “Q1” fixing the brass connector (see Fig. 82); 2. Disconnect the connecting pipe; 3. Pull down the brass connector and catch simultaneously the float (see Figs. 87 & 88); 4. Reassemble in reverse order; Fig. 87 Fig. 88 48

18.3.4 Removing the secondary heat exchanger 1. Carry out step 18.1.1 and 18.1.2; 2. Remove the 3 way valve motor as in step 18.3.2; 3. Disconnect the expansion vessel pipe. 4. Unscrew the two fixing screws R and pull the heat exchanger toward you (see Figs. 89 & 90); 5. Reassemble in reverse order; The heat exchanger is so designed that it cannot be remounted incorrectly; R Fig. 89 Fig. 90 18.3.5 Removing the pump 1. Carry out step 18.1.1; 2. Lower the electrical box cover as in step 18.1.2; 3. Remove the PCB cover; 4. Remove the pump plug from the control board and earth plug from earth socket (see Fig. 91) 5. Unscrew the pump nut (see Fig. 92); 6. Remove the clip S2 on the pump volute (see Fig. 93); Fig. 91 Fig. 92 7. Pull the pump toward you and remove the clip S3 securing the pressure gauge (see Fig. 94); 8. Reassemble in reverse order. S2 S3 Fig. 93 Fig. 94 49

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