Step 2:
Remove the grey gauge ports from the side of the Monobloc that is to face away from the wall. Fit the supplied gauges on to
the Monobloc using PTFE tape or suitable sealant. The gauges will show the unregulated mains pressure and then the regulated
system pressure.
Step 3:
If installing the Mainsboost Monobloc as part of a ULK kit the listed components must be installed in the correct order as shown
in the schematic drawing below to ensure safe and satisfactory system operation.
Note: It is good practice to install a drain port between the vessel and the isolating valve to allow the vessel to be drained if
required.
MAINTENANCE
To maintain the Mainsboost Monobloc ULK, isolate the incoming mains supply, remove the strainer cap and drain fitting as
shown, remove any built up debrise in the strainer and replace the caps ensuring they are water tight.
Open the mains stockcock to allow supply to resume.
Fig. 3 Monobloc 22/28mm Installation
3
2
1
Inlet
Outlet
To Pump (optional)
Item Description
1
Monobloc unit
2
¼ “ BSP Pressure gauge
3
Lever isolating ball valve
4
Mainsboost vessel connector fitting
4 (under vessel)
Fig. 4 Strainer cap and drain fittings
Strainer cap
Drain fitting
