Technical data

8
GEMINI HSC
9.0 system schematics (contd)
typical multiple calorifiers open vented application
Open
Vent
Cold
Feed
Flow
From
Boiler
Drain at
Low Level
Secondary
Pump
3 Way Vent Valve
Return to Boiler
Divertor
Valve
Reg
Valve
IV
IV
typical multiple calorifiers
unvented-direct-on-mains/boosted supply application
Cold
Supply
Pressure Control
with Strainer
Stop Valve
Flow from
Boiler
IV
IV
NRV
Motorised Valve
Tundish
Drain at
Low Level
Temperature &
Pressure Relief Valve
3 Way Vent Valve
Return to Boiler
Secondary Pump
Balanced
Pressure
Cold Water
Take Off
Pressure
Operated
Bypass Valve
Expansion
Valve
Expansion
Vessel
NRV
IV IVNRV
IV
Fig 5.
Fig 6.
unvented application detail of
core manifold assembly
Expansion Relief
Valve Set 6 bar
Core Manifold Inc
Non Return Valve
Remove and Discard
Plug. Connect
Expansion Vessel To
This Port
Pressure Limiting Valve
Set 3-5 bar Inc Strainer
Plugged Tapping For
The Take-Off of A
“Balanced Pressure”
Cold Supply if Req’d.
Fig 7.
Note
See also Fig.4.