Technical Specifications - Beretta HRT-177WS Manual De Instalacion Y Uso

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PAR.
DESCRIPTION
FROST PROTECTION TEMPERATURE: The
weekly room thermostat has an internal an-
EN
EN
ti-frost function that switches on the boiler (only
when the boiler is properly set to allow the room
thermostat to activate/deactivate the boiler, i.e.
boiler in winter mode) if the room temperature
drops below the selected temperature. This
function is active all the time whatever the pro-
gramming time or the set temperature. By en-
02
tering the 02 parameter it is possible to adjust
the frost protection temperature: the factory
setting is 5°C, the 02 parameter can be adjus-
ted between 3°C and 10°C. the frost protection
selected temperature becomes the minimum
settable value for the economy temperature (in-
side the main menu). WARNING! This anti-frost
protection is not intended to be the main con-
trol to protect the entire heating system and the
boiler during a freezing period.
HYSTERESIS OFF: The value selected with
this parameter indicates when the heat request
is stopped. The factory setting is 0,4°C, val-
03
ues range between 0,0°C and 2,0°C. Heat re-
quests switch OFF when the room temperature
reaches the room target temperature plus the
hysteresis OFF value.
PAR.
DESCRIPTION
HYSTERESIS ON: The value selected with this
parameter indicates when the heat request is
activated. The factory setting is 0,2°C, values
04
range between 0,0°C and 2,0°C. Heat requests
switch ON when the room temperature drop
below the room target temperature minus the
hysteresis ON value.

TECHNICAL SPECIFICATIONS

Relay switching capacity:
• Min 1mA,
• Max 2A a 30 Vc.c.
• Max 0,25 A a 230 VAC
Power rating: 2 x 1,5AAA - Alkaline batteries
Temperature setting: 3°C to 35°C in 0.2°C increments.
Display temperature: -9,9°C to 50°C in 0.2°C increments.
Install the thermostat in an environment with normal pol-
lution level.
The manufacturer reserves the right to change specifi ca-
tion without prior notice - Consumers statutory rights are
not affected.
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