GENERALmini HE --- Installation & Servicing61 BOILER WATER CONNECTION4008037003525716315065 (2 9/16”)83 (3 1/4”)65 (2 9/16”)52 (2”)64 (2 1/2”)CH returnCH flowDHW cold inlet *Gas inletDHW hot outlet *WallmountingPlateCondensatedrainconnectionareaPipe size O.D. mmCH flow 22CH return 22Gas inlet 22DHW cold inlet 15DHW hot outlet 152 BOILER CLEARANCESAll dimensions in mm (in.)The following minimum clearances must be maintained foroperation and servicing. Additional space will be required forinstallation, depending upon site conditions.25 (1”) 50 (2”)200 (7 7/8”)200 (7 7/8”)Bottom clearanceThe bottom clearance, after installation, can be reduced to20mm. However, 200mm must be available for servicing.Front clearanceThe minimum front clearance when built into a cupboard is50mm (2”) from the cupboard door. However 450mm(17 3/4”) overall clearance is still required, with the cupboarddoor open, to allow for servicing.Side and Rear Fluea. Provided that the flue hole is cut accurately, e.g. with a coredrill, the flue can be installed from inside the building wherewall thickness does not exceed 600 mm (24”).Where the space into which the boiler is going to be installedis less than the length of flue required the flue must be fittedfrom the outside.installation from inside ONLYb. If a core boring tool is to be used inside the building thespace in which the boiler is to be installed must be at leastwide enough to accommodate the tool.190 (7 1/2”)95 ()273 (10 3/4”) 127 (5”)