Hysteresis For Maximum Limitation Of The Collector Temperature; Collector Frost Protection Temperature - Siemens SIGMAGYR RVP540 Basic Documentation

Benefit
Description
Setting
Effect
Benefit
Description
Setting
Effect
Siemens Building Technologies
HVAC Products
5.20 Hysteresis for maximum limitation of the
collector temperature
• Adjustable hysteresis for maximum limitation of the collector temperature
The switch-off point for the collector pump can be set via a hysteresis. When there are
2 collectors, the same hysteresis will apply to both collectors.
Setting range
1...20
When maximum limitation of the collector temperature is reached, the collector pump
will be switched on and switched off again via the hysteresis (if a diverting valve is
used, it will be driven to the respective position).
P
on
off
125
130 135
P Collector pump(s)
TK Collector temperature on sensor B6 (and B61)
300 and
EXP
301 Maximum limitations of the collector temperature
EXP
302

Hysteresis for maximum limitation of the collector temperature

EXP

5.21 Collector frost protection temperature

• Adjustable temperature for frost protection for the collector
Frost protection for the collector prevents the collector(s) from freezing at low outside
temperatures. When there are 2 collectors, the setting applies to both.
Setting range
--- / -20...+5
Entry:
--- Frost protection for the controller is switched off.
For plants with sufficient amounts of glycol added.
-20...5 Frost protection for the collector is switched on.
For plants with little or no glycol added to the collector circuit.
If the temperature at the collector sensor falls below the adjusted level,
the collector pump will be activated and the bypass valve driven to the required
position so that heat from the storage tank is supplied to the solar system.
As soon as the temperature at the collector sensor lies 1 K above the adjusted
value, the collector pump will be deactivated while observing an overrun time
of one minute.
Basic Documentation RVP540 / RVP550
Description of the EXP settings
Unit
°C
TK
140 °C
Unit
°C
Factory setting
5
Factory setting
- - -
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CE1P2488en
18.10.2002