24
Installation
Connecting the boiler
1-2. Keep the cap on the connections
that are not used on the pipe work
headers:
Flow and return: 2" blind cap with
gasket (2 items/boiler).
Gas: 1 ¼" blind cap with gasket
(1 item/boiler).
For connections, use the supplied
gaskets. Check all connections for
leakage and gas-tightness.
3. Connecting the isolation valves to
the boiler:
Flow:2"atcouplingisolationvalve
with red handle.
Return:2"atcouplingttingcross
unionwithll/drainvalveand
isolation valve with blue handle.
The boiler is supplied with a 3 and
6 bar safety valve.
ELCOrecommendttingthe6
bar safety valve due to the control
settingsshuttingtheboileroat
6 bar.
Gas: 1¼" gas isolation valve.
Polluted test water may be
released when removing the
plastic caps on the boiler ow
and return.
For connections, use the
supplied gaskets. Check all
connections for leakage and
gas-tightness.
4. Connect the valves to the pipe work
headers:
Flow: 45mm pipe pieces with
2"atcoupling.
Return: 45mm pipe pieces with
2"atcoupling.
Gas:28mmpipepiecewith1¼"at
and28mmcompressiontting
For connections, use the
supplied gaskets. Check all
connections for leakage and
gas-tightness.
1
2
3
4