1
APPLIANCE DESCRIPTION
1
1.1
Overview
2
1
3
Fig. 1.1
1 Case front panel
2 Control panel
3 Control panel cover
1.2
Control panel
4 C.h. circuit temperature and pressure gauge
5 Time switch (c.h. control) *
6 Lock---out signal lamp
7 Lockout reset button
8 Function selector and c.h. temperature control
knob
9 D.h.w. temperature control knob *
10 Appliance operation lights
1.3
Isolation valves
13
11
15
12
14
Fig. 1.2 (bottom view of the boiler)
11 C.h. return valve
12 D.c.w. inlet valve *
13 Gas inlet valve
14 D.h.w. outlet pipe *
15 C.h. flow valve
1.4
Technical data
For detailed technical data see section 4.4 or 4.5
of this manual.
10
8
9
7 6
4
5
M90D.24S
M90D.28S
M90D.24SR
M90D.28SR
Fig. 1.3
* not on M90D.24SR and M90D.28SR boilers
US
E
