Navien LCB700-21RS Installation & Operation Manual page 16

Combi Internal Model
Supply Connections
Symbol Description
A Flue Exhaust
Central
B Heating
Supply
Central
C Heating
Return
D DCW Inlet
E DHW Outlet
Oil Supply
F
Inlet
Condensate
G
Drain
Internal Model
Right View
16 About the Boiler
LCB700
21LC, LCX 28LC, LCX 36LC, LCX
Φ60/100
Φ22 Φ22 Φ22(Φ28)
Φ22 Φ22 Φ22(Φ28)
1
/ " Ball Valve (Female)
4
More than Φ21.5 (Plastic Pipe)
1 / " Ball Valve (Female)
4
More than Φ21.5 (Plastic Pipe)
Back View
Combi External Model
Top View
F A G
External Model
Right View
D E
B C
Back View