Procedures And Checks Before Connecting The Range; Feedwater Characteristics - Cadel DEMETRA Installation, Use And Maintenance Manual

Hydraulic connection diagrams Demetra: with boiler and security exchanger.
EN
10.11

PROCEDURES AND CHECKS BEFORE CONNECTING THE RANGE

1 - Carefully wash all the pipes in the system in order to remove any manufacturing residue which might
compromise the correct operation of the pumps, valves, etc.
2 - Ensure that the chimney flue does not have chocked section, that there is a good draft and that the flue is
made in compliance with the laws in force.
It is advisable to install a draft regulator to limit the suction of the flue to 16 Pa, in order to avoid unexpected
increases in power. Joints should be checked in the existing flues.
3 - Verify the air entrance on the rear will not be chocked.
10.12

FEEDWATER CHARACTERISTICS

Chemical and physical characteristics of water are fundamental to guarantee long life and an efficient
operation of the range.
Scale deposits are the most frequent problems affecting heat exchange surfaces, caused by bad-quality water.
The low heat conductivity of scale generates localised overheating, detrimental for the range.
22
Fig. 23 - Connection 3
LEGEND Fig. 23 page 22
VEA
Open expansion tank
IR
Heating system
AI System supply
SI
Flue damper
VR
Check valve
PI System pump
RI
System return
SC
Drain
EAF
Cold water inlet
UAC
Hod water outlet
B Boiler
PB
Boiler pump
AB
Boiler supply
RB Boiler return
S
Coil
TS
Safety pipe
VST
Download thermical valve
DEMETRA