Viessmann J3HA, Инструкции по установке и обслуживанию для подрядчиков

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15
Outside temperature sensor
!
For fitting the wireless outside temperature sensor
(wireless accessory):
Wireless base station installation and service
instructions
Fitting location for outside temperature sensor
■ North or north-western wall, 2 to 2.5 m above ground
level; in multi storey buildings, in the upper half of the
second floor
■ Not above windows, doors or vents
■ Not immediately below balconies or gutters
■ Never render over
Outside temperature sensor connection
2-core lead, length max. 35 m with a cross-section of
1.5 mm
2
External demand via switching contact
Connection options:
■ EA1 extension (accessory, see separate installation
instructions)
■ Plug
lH
When the contact is closed, burner operation is load-
dependent. The boiler water is heated to the set value
selected in coding address "9b" in group
"General"/1 .
The boiler water temperature is limited by this set
value and by the electronic maximum limit (coding
address "06" in group
"Boiler"/2 ).
!
Please note
Live contacts lead to short circuits or phase fail-
ure.
The external connection
must be floating and
meet the requirements of protection class II.
Plug
lH
EA1 extension
A
lH
N
?
1 L
A Floating contact (when connected, remove jumper
between L and 1)
B
[{S
DE
[{D
DE
[{A
DE
A
A
Floating contact
B
EA1 extension
Codes
■
"4b:1" in group "General"/1
■
Effect of the function on the relevant heating circuit
pump:
coding address "d7" in group
"Heating circuit" (only
for weather-compensated control units)
■
Effect of the function on the circulation pump for cylin-
der heating:
coding address "5F" in group
"DHW"/3
Codes
■
Set "3A" (DE1), "3b" (DE2) or "3C" (DE3) to 2 in
group
"General"/1
■
Effect of the function on the relevant heating circuit
pump:
coding address "d7" in group
"Heating circuit" (only
for weather-compensated control units)
■
Effect of the function on the circulation pump for cylin-
der heating:
coding address "5F" in group
"DHW"/3
External demand via 0
–
10 V input
Connection at 0
–
10 V input at EA1 extension .
Installation sequence
Electrical connections
(cont.)
5686 293 GB
Installation