ECH 200 BD
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Pa r03 Heating mode configuration off during heating On during heating (depending
on anti-freeze electrical heater
control)
Pa r04 Configuration of electrical heater control
probe in heating mode
controlled on the basis of AI1
(refer to connection diagrams)
if Pa H05 (config. AI1)= 1
otherwise off
Controlled on the basis of AI2
(refer to connection diagrams)
if Pa H06 (config. AI2)= 1
otherwise off
Pa r05 Configuration of control probe in cooling
mode
controlled on the basis of AI1
(refer to connection diagrams)
if Pa H05 (config. AI1)= 1
otherwise off
Controlled on the basis of AI2
(refer to connection diagrams)
if Pa H06 (config. AI2)= 1
Otherwise off
Pa r06 Configuration when OFF or on stand-by Off when instrument is OFF or
on stand-by
On when instrument is OFF or
on stand-by
6.5.1 Supplementary electrical heaters
If Pa r15 =1 electrical heaters become anti-freeze/supplementary electrical heaters.
Their operating mode is described in the paragraph on the supplementary electrical heater control
6.6 External anti-freeze electrical heaters
External anti-freeze electrical heaters are used on water-water machines with gas reversal.
They are connected to the triac TK output (refer to connection diagram) and controlled on the basis of probe AI3 (refer
to analogue inputs) .
They are active only if:
• output TK is configured for anti-freeze electrical heaters, on a water-water machine with gas reversal (Pa F01=
2)
• AI3 is configured as an NTC anti-freeze input on a water-water machine with gas reversal (Pa H07= 4)
6.7 Boiler
The output for boiler controller is relay NO4 (refer to connection diagram) with a suitable configuration.
The boiler output may operate in two different ways:
• to supplement another heating resource
• to provide heating with boiler only.
SUPPLEMENTARY BOILER:
The output is active if:
• relay 4 configuration parameter, Pa H24= 2.
• heat pump is declared present, Pa H28= 1.
• AI4 is configured as an outdoor probe, Pa H08= 3.
HEATING BOILER:
The output is active if:
relay 4 configuration parameter, Pa H24= 2.
heat pump is declared not present (H28= 0)
The boiler is turned off if:
• the device is operating in cooling mode
• the device is on stand-by or OFF
• there is a boiler shutdown alarm (refer to table of alarms)