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TM_i-BX(-N)_NC05_00_06_20_EN
4.13.5
DHW STORAGE TANK ANTIFREEZE
Protection is related to the value read by the DHW storage tank temperature probe (B3)
The involved resource is the DHW storage tank heater (NO10).
This function can be enabled by setting parameter 0228 = YES, and has the purpose of protecting the DHW storage tank from the formation of ice,
by activating the corresponding immersion heater when the water temperature falls to a certain value, which can be set using parameter 0229.
The heater is activated based on the function described below:
For the default values of the various parameters, see the parameters table
4.14
DEFROST
The defrost function can be enabled using the Manufacturer Menu (Mnu13), while the set defrost start and end parameters, time scales, etc., can be
found in the Assistance Menu (Mnu08).
The defrost type may be selected through parameter 132R.
The "PRESSURE" type defrost follows the logic of the chart below:
MEHITS S.p.A.
●
TECHNICAL MANUAL
DHW heater
DHW antifreeze hysteresis (0230)
ON
OFF
DHW antifreeze setpoint
(0229)
Revolution
[rps]
(Max. 10 min)
Max or less
20 sec
5-10 sec
Hot-gas by pass
134G
By pass
134H
open
DHW storage tank T
(B3) [°C]
Defrost
Max. acceleration ratio:
10rps/sec
Max. deceleration ratio:
2rps/sec
20 sec
1-2 min
Time
By pass
134I
closed
51
Version NC05 - Translation of the Original Instructions
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