Instruction manual

9
GENERAL LAYOUT of the main components of model BTS
1 Central heating supply
2 Central heating return
3 Gas inlet
4 Domestic hot water outlet
5 Cold water inlet
6 Flue gas discharge fan
7 Automatic air vent
8 Thermostat bulb pocket
9- -
10 Instrument panel
11 Temperature-pressure gauge
12 Failure lamp indicator
13 Ignition and detection electrodes
14 Burner
15 Gas manifold
16 - -
17 Gas valve
18 High limit thermostat
19 Power and circulator pump switches
20 Domestic hot water priority thermostat
21 Central heating regulation knob
22 Heater temperature control
23 Electrical control board
24 Ignition module
25 - -
26 Electrical junction box
27 Expansion tank
28 Pressure switch
29 - -
30 - -
31 - -
32 - -
33 Central heating regulation valve
34 Circulator pump
35 Transformer
36 Low water cut-off
A Flue discharge
B Air intake
Figure 4 - BTS side view