Installation 5
0020244995_02
ecoTEC
pro
Installation
and
maintenance
instructions
13
5.1.3
Using the correct type of gas
Using the incorrect type of gas may cause fault shutdowns in
the product. Ignition and combustion noise may occur in the
product.
▶
Only use the gas type listed on the data plate.
5.1.4
Required preliminary work
1.
Install a stop cock in the gas line.
2.
Make sure that the existing gas meter is capable of
passing the rate of gas supply required.
3.
Install a system separator (to be provided on-site) dir-
ectly on the cold water connection for the combination
unit.
4.
Check that the volumetric capacity of the expansion
vessel is sufficient for the system volume.
Conditions
: The volume of the installed expansion vessel is insufficient
▶
Install an additional expansion vessel, connected as
close to the product as possible, in the heating return.
Conditions
: External expansion vessel installed and warm start active
▶
Install a non-return valve in the product outlet (heating
flow) or decommission the internal expansion vessel
in order to prevent the warm start function from being
increasingly activated due to backflow.
5.
Install a tundish with siphon for the condensate dis-
charge and the exhaust pipe on the expansion relief
valve. Lay as short a drain line as possible, at a down-
ward gradient away from the tundish.
6.
Insulate bare pipes exposed to environmental influ-
ences to protect them from frost using suitable insu-
lating material.
5.2
Installing the gas connection
1.
Install the gas pipe in accordance with the recognised
rules of technology.
2.
Connect the product to the gas line as shown in ac-
cordance with the recognised rules of good engineering
practice.
3.
Remove the residues from the gas line by blowing
through the gas line beforehand.
4.
Purge the gas line before start-up.
5.3
Checking the gas line for leak-tightness
▶
Check the entire gas line properly for leak-tightness.
5.4
Installing the hot and cold water connection
1.
Make the water connections as shown in accordance
with the relevant standards.
2.
Ensure correct water pressure and flow requirements
and that any expansion can be accommodated with the
cold supply pipe work.
5.5
Connecting the heating flow and heating
return
▶
Make the heating connections as shown in accordance
with the relevant standards.
