Lennox GCWB95W-205

38
240012994 Rev. B [08/31/2020]
9 - START UP PROCEDURE
9.1 Central Heating System Connections - Combi
GCWB95W-150 COMBI
MANIFOLD
GCWB95W-205 COMBI
LEGEND 150 205
A Pressure Gauge -
B Pressure Relief Valve 30.00 psi [2.11 bar]
C Heating return connection 3/4" [22.2 mm] 1" [25.4 mm]
D
Cold DHW inlet tap / system lling
connection for Combi
1/2"
[15.9 mm]
3/4" NPT
E Gas shuto connection 3/4" [22.2 mm]
F Boiler Fast Fill External to Boiler NA
G DHW outlet
1/2"
[15.9 mm]
3/4" NPT
H Drain connection for condensate
13/16" [21 mm] ID
Hose
3/4 NPT
I Heating supply connection 3/4" [22.2 mm] 1" [25.4 mm]
K
5 g p m D H W  o w r e st r i ct o r
(Factory installed) (205 only)
na
3/4"
[22.2 mm]
H
B
G
A
E
D
C
I
K
F
GCWB95W-150/205
A
B
H
I
C
G
E
K
D