Connecting the Gas Supply 21
WARNING
●
Before connecting the gas supply determine the gas type
,
and pressure for the boiler by referring to the rating plate Use
.
only the same gas type indicated on the rating plate Using
.
a different gas type will result in abnormal combustion and
malfunction of the boiler Gas supplies should be connected
.
by a licensed professional only
.
●
The appliance and its gas connection must be leak tested
before placing the appliance in operation
.
VESTA recommends connecting the boiler as the first device
downstream of the gas meter to ensure a sufficient gas supply
,
.
The boiler is
recommended to be
the first appliance to
be connected to the
gas supply line
.
Gas meter s capacity
Total gas
’
≥
capacity of connected appliances
Gas Supply Line
To connect the gas supply
:
1
.
Determine the gas type and pressure for the boiler by referring
to the rating plate
.
2
.
Perform a pressure test on the main gas supply line
.
3
.
Purge the gas line of any debris
.
4
.
Determine the proper size and type for the gas line Refer to
.
the tables that follow
.
5
.
Install full port valves on the gas supply line and boiler
.
6
.
Connect the gas supply line
.
7
.
Test the supply line all connection points and the boiler for
,
,
gas leaks
.
Opened
Pipe size
:
1
/
2
”
~
3
/
4
”
(
)
inner diameter
CAUTION
●
Install a manual gas shut off valve between the gas supply
-
line and the boiler
.
●
A sediment trap must be provided upstream of the gas
controls
.
4 Connecting the Gas Supply
.
gas adaptor
OPENED
Gas Adapter
.
Closed
4 1
.
Gas Pipe Sizing Tables
VC combi boiler