17
3.6
SMOKE PRESSURE
SWITCH
The air pressure switch is factory set to
the values 42-52 Pa (
“25 HE”
model),
52-62 Pa (
“30 HE”
model) and 65-75 Pa
(
“35 HE”
model) to guarantee boiler func-
tioning even with intake and flue pipes at
the maximum permitted length.
The value of the signal to the pressure
switch is measured using a special instru-
ment connected to the pressure intake
(10-18 fig. 3).
3.7
ELECTRICITY
CONNECTION
FOR ZONE SYSTEMS
When installing a system of this type, use a
separate electrical line to which room ther-
mostats with their local valves will be con-
nected.
Connect micro switches or relay contacts
on terminals 15-16 of the
“TA”
connector
of the electronic card after removing the
existing jumper (fig. 17).
L
CR
1
CR
Connettore "TA"
Fig. 17
L
N
TA
TA
1
VZ
R
VZ
1
R
1
KEY
TA-TA1
Zone room stat
VZ-VZ1 Zone valve
R-R1
Zone relay
CR-CR1 Relay contact or micro zone valve
NOTE: Relays are used only if the area
valves have no microswitches.
“TA” connector
Содержание ECOMFORT 30 HE
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Страница 33: ...Ecomfort 30 HE User instructions GB PLEASE LEAVE THIS INSTRUCTION WITH THE USER ...
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