Hanging The Boiler - Worcester Greenstar 25Si Compact Installation, Commissioning And Servicing Instructions

5.5

HANGING THE BOILER

CAUTION: Lifting the boiler
▶ Do not lift the boiler using the control panel as a hand
hold.
▶ There are two handling holes incorporated into the
inner casing left and right in the lower section of the
appliance.
NOTICE: Before hanging the boiler remove:
▶ the plastic strip fitted to pipes.
▶ the red cap from the expansion vessel.
▶ the red plug in the expansion vessel connection in the
hydraulic manifold.
▶ Ensure the clip on the hydraulic manifold connection
is fully released
▶ Protect the floor from residual water.
The expansion vessel is secured to a bracket on the wall
frame in a "Pre-Installation" position.
Ensure that the control panel is in the closed position
before hanging the boiler.
There is no requirement to re-fit the bottom screws at
this time.
▶ Stand the boiler upright to gain access to the rear of the hydraulic
manifold.
▶ Release the wire retaining clip securing the red plastic blanking plug.
1. Before hanging the boiler:
▶ Remove the blanking plug from the expansion vessel connection at
the hydraulic manifold.
▶ Lubricate the expansion vessel "O" ring with silicone grease.
▶ Ensure that the wire retaining clip is still fully released so that the
expansion vessel pipe connection can be made into the hydraulic
manifold.
Fig. 32 Removing the blanking plug
Refer to figure 33
1. Ensure that the plastic protection cap is removed from the expansion
vessel connection pipe.
2. Remove the PRV pre-plumbing connector:
▶ Unscrew the PRV outlet pipe from the pre-plumbing connector.
▶ Remove the two screws (1) holding the pre-plumbing connector in
place.
▶ Remove the temporary PRV pre-plumbing connector, and discard.
Greenstar Si Compact ErP - 6 720 813 278 (2015/07)
1.
▶ Replace the two screws (1) removed earlier and tighten firmly.
▶ The boiler is mounted on the wall frame utilising the two mounting
points, indicated on figure 33, left and right at the top of the wall
frame.
1
Fig. 33 Mounting points
▶ Hang the boiler on to the wall mounting frame utilising the two
mounting points positioned left and right at the top rear of the
appliance.
The expansion vessel is shown removed for clarity.
Fig. 34 Hanging the boiler
WARNING: Bonded washer (gas)
▶ The bonded washer must be used on the gas pipe
isolating valve connection.
▶ Connect the PRV discharge pipe onto the PRV outlet pipe work, and
hand tighten only.
▶ Ensure that the gas and water connections to the isolating valves are
made using the fibre washers supplied in the Literature/Hardware
pack. Tighten the gas and water connections firmly.
INSTALLATION
1.
2.
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