Functional And Operating Elements - Vaillant atmoCRAFT VK 654/9 Installations- Und Wartungsanleitung

2 Description of the appliance
2.7

Functional and operating elements

10
9 8
15
Fig. 2.1 Overview of the functional elements
Key:
1 Electronic box
2 Gas fitting
3 Burner
4 Boiler filling and drain cock
5 Immersion sleeve
6 Safety temperature limiter STL
6
11
7
1
6
5
2
4
3
Operating elements of the control box:
7 Main ON/OFF switch
8 Digital information and analysis system with display
9 Feed temperature controller
10 Storage tank temperature controller
11 Mounting positions for Vaillant control units
Connections on the back of the boiler:
12 Heating feed connection (HVL)
13 Gas connection
14 Heating return connection (HRL)
15 Flow cutout
12
13
14
Installation and maintenance manual atmoCRAFT