Dtfs: Fullspeed; Mintemp Collector; Maxtemp Tank2; Dton Tank2 - Watts Water Technologies LCD+ Bedienungsanleitung

dT = T1 –
T2
dtMax 85%
Maxtemp
Tank1
dt Fs
100
%
0%
OFF 100% Control
3.4

dTFS: Fullspeed

- Difference between collector temperature T1 and Tank1
temperature T2 to have the full speed (100%) on the pump.
(Adjustable between minimum "dTMax tank1" and maximum
50°C (default value 35°C))
3.5

Mintemp collector

- This setting level is used to define a minimum temperature on
the collector to authorize the solar loading. (Adjustable
between 0°C and 99°C.(default value 25°C))
The following settings are only available with two tanks (2 and
3).
3.6

Maxtemp tank2

- Maximum value of desired water temperature on the tank2.
(Adjustable 15 to 95°C with factory value 65°C)
3.7

DtON tank2

- Difference between collector temperature T1 and Tank2
temperature T4 to start the main pump1 with system2 or
pump2 with system3.
(Adjustable 3 to 40°C with factory value 15°C)
3.8

dTOFF tank2

- Difference between collector temperature T1 and Tank2
temperature T4 to stop the main pump1 with system2 or
pump2 with system3. (Adjustable 2°C bis 35°C (dTMin <=2°C
dTMax Tank 2) with factory value 7°C)
Note:
With a system with two tanks the priority tank can be chosen in
the "Service" menu in submenu "System", and also choose
the time of the loading cycle for the secondary tank in
submenus "Prio tank load" and "Prio tank break".
dt Fs
dtMin dtMax
100%
Control 100%
Collector
T1 (°F) The following settings are only available with system 6.
Tank1
T2 (°F)
3.9

dTON return

- Difference between Tank1 temperature T2 and external
space heating return T4 to start the preheating of this external
space heating return throuhgh tank1. (Adjustable between 3 to
40°C (default value 15°C))
P
1 3.10

dTOFF return

Available only with the system 6
OFF
- Difference between Tank1 temperature T2 and external
space heating return T4 to stop the preheating of the external
circuit. (Adjustable 2 to (dTMax return -2°C) with factory value
7°C)
EXTRA FUNCTIONS SETTINGS ADJUSTMENT
The Extra adjustments will be only available if one Extra
function is chosen on an output in the "output configuration"
menu.
3.11

Thermostat Function

Available only if extra function "thermostat" is selected on the
output P3
T3 start +

hysteresis

T3 start

3.11.1 Start

- setting level to start the additional heat (P3) when the
water temperature on the top of tank (T3) decreases under
this setting level.
(Adjustable 20 to 90°C with factory value 55°C)
3.11.2 Hysteresis
- Value of the hysteresis to stop the additional heat (P3)
when the water temperature on the top of tank (T3) is more
than the start temperature plus the hysteresis value.
(Adjustable 2 to 30°C with factory value 10°C)
The following Timer parameters are available for the
following extra functions, "Thermostat", "Cooling" &
"Diffcontrol".

3.11.3 Delay

- Time delay to start the output (P3).
If adjusted on minus value "-xxxs", the relay P3 will start "xxx
seconds" before the startup demand.
If adjusted on plus value "+xxxs", the relay P3 will stop "xxx
seconds" after the stop demand.
(Adjustable -900s to +900s with default value "0")

3.11.4 Legionella

- The Number of days to activate the legionellosis function.
This function is generally used when the tank is filled with
D.H.W., it heats with the extra output (P3) the tank up to
65°C (T3) if the water inside the tank did not reach this level
during the previous number of days selected. (Adjustable 1
to 7 days with factory value 1).
14
Water temperature on top of tank1 T3 (°C)
Extra P3