Glow-worm Inset BBU50 - Manual (Page 10)

10 221723B
4 Installation
Diagram 4.4
FITTING THE
INJECTOR
22mm CENTRAL
HEATING RETURN
28mm DOMESTIC HOT
WATER FLOW
(Must rise to allow air to
escape from the system)
22mm CENTRAL
HEATING FLOW
Note: If the tee piece is
fitted away from the
boiler, the central
heating flow pipe must
be increased to 28mm
as shown.
28mm DOMESTIC
HOT WATER
RETURN
28mm
COPPER
PIPE
22mm
CENTRAL
HEATING
RETURN
28mm
DOMESTIC
HOT WATER
FLOW
28mm
DOMESTIC
HOT
WATER
RETURN
22mm COPPER
PIPE SUPPLIED
WITH APPLIANCE
(Do not cut)
METHOD B
22mm CENTRAL
HEATING FLOW
(Must run down
to allow air in
system to
escape)
22mm COPPER
PIPE SUPPLIED
WITH APPLIANCE
(Do not cut)
FIXED
DIMENSION
FIXED
DIMENSION
22mm COPPER
PIPE SUPPLIED
WITH APPLIANCE
(Do not cut)
22mm COPPER PIPE
SUPPLIED WITH
APPLIANCE
(Do not cut)
METHOD A
8027
8026
8025
INJECTOR
(Supplied)
22mm CENTRAL
HEATING RETURN
FIXED
DIMENSION
22mm COPPER PIPE
SUPPLIED WITH
APPLIANCE
(Do not cut)
UNEQUAL TEE
(supplied)
22mm
28mm
A
A
SECTION A-A
6763
BRAZED
JOINT
RETURN PIPE
ASSEMBLY
22mm
COPPER PIPE
SUPPLIED
WITH
APPLIANCE
(Do not cut)