MINIPACK
X:/Aquatech-Pressmain Instruction manuals/current/MINIPACK
9
1.3.3 PIPEWORK
1.3.3.1 Mains Water Supply
i.
Fit an isolating valve in the supply to enable the unit to be isolated from the supply for maintenance.
Make
sure the float valve restrictor is fitted if the mains water inlet pressure exceeds 1.5 Bar. If the mains
water inlet pressure is less than 1.5 Bar, the restrictor should not be fitted.
ii.
Float Valve Instructions as follows: -
iii.
For category 4 & 5 installations remove the filler tube to comply with local water regulations.
1.3.3.2 System
Connection
i.
The unit must be connected with any expansion vessels and cooling vessels, to the underside of the return
header on the suction side of the circulating pumps and boiler/chiller (see Location 1.3.1)
ii.
The system connection on the pressurisation unit is 15mm compression/1/2” BSP at the side of the cabinet.
An isolating valve must be fitted to isolate the unit from the system.
iv.
All hydraulic accumulators and expansion vessels fitted to the system must have isolating and drain off
valves to enable them to be serviced.
v.
All hydraulic accumulators and expansion vessels fitted to the system must have connecting pipework that
is removable to give access for replacing vessel diaphragm, and must be large enough to avoid friction
losses.
