Vaillant ecoMAX 665 Installation And Maintenance Manual page 28

7 Inspection and maintenance
No. Step
Disconnect the appliance from the mains supply, close the gas supply and maintenance cocks,
1
depressurize the appliance on the water side (observe the pressure gauge)
2 Dismantle thermal compact module
3 Clean the integral condensation heat exchanger
4 Check whether the burner is dirty
5 Install compact thermal module. Caution: replace the seals!
Check whether the electrical plug connections and other connections are fitted tightly
6
and make adjustments, if necessary.
7 Cleaning the air intake tube
Open the maintenance cocks and fill the appliance/system up to about 1.0 - 2.0 bar
8
(depending on the static height of the system); start the venting program
Check the overall condition of the appliance, remove general dirt from the appliance
9
and the vacuum chamber
10 Check the condensate siphon in the appliance, and clean and fill it if necessary.
11 Clean the condensate paths in the appliance
12 Open the gas supply and switch on the appliance
Perform a test run on the appliance and heating system, including
13
water heating, and bleed if necessary
14 Test ignition and burner performance
15 Check whether the appliance is leaking flue gas, water or condensate
16 Check the flue system for leaks and that it is fixed properly, and make adjustments if necessary
17 Check appliance gas setting, reset and record if necessary.
18 Complete the gas commissioning checklist (Benchmark)
Table 7.1: Maintenance steps
28
Installation and maintenance manual ecoMAX 665 / 0020020159_03
To be carried out during:
Inspection Maintenance
X
X
X
X
X
X X
X
X
X X
X X
X
X X
X X
X X
X X
X X
X
X X