Dantherm CC 3000, Руководство по обслуживанию

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Product description : System operation strategy
System operation strategy
This section describes the operation strategy according to the possible operation modes: Free
cooling mode, Standard mode, Energy save mode and Air Con mode.
The basic operation strategy of the CC 3000 can be described in the following way:
• Connected heater (optional) starts, when temperature is too low (on/off set points for
heater can be adjusted).
• Free cooling unit(s) start(s) up slowly, when temperature rises above Min °C set point and
fan will increase speed gradually (according to P-band) until Max °C set point is reached.
• P-band starts at Min °C set point and stops at Max °C set point.
• Most setups will only need a P-band, which continues from Min °C to Max °C without
interruption. The set point for Mid
1
and Mid
2
will in this case be exactly the same.
• The P-band can be separated into two parts, interrupted by Mid
1
and Mid
2
as illustrated
in Fig. 4.
• Air Conditioner(s) is/are activated, when the set point for A/C on is reached and stops
again, when temperature drops below set point for A/C off.
• Emergency operation is a special boost operation, where all connected cooling units
(both free cooling and A/C) starts up at the same time, until temperature drops below
emergency off.
Fig. 4
This table describes the diffferent settings, which can be adjusted with the CC 3000 controller.
Abbr . Description
OFF Temperature when fan stops
ON Temperature when fan starts
Heat Temperature where heater will be active (optional)
Set point Desired indoor temperature
•
fan speed will be adjusted between min °C and max °C
Min °C Temperature at bottom of P-band
Mid
1
Top of P-band 1
Mid
2
Bottom of P-band 2
Max °C Temperature at top of P-band
P-band (1 & 2) Regulating fan speed proportionally according to indoor temperature
A/C 1 on External Air con unit 1 starts up if connected
A/C 1 off External Air con unit 1 stops if connected
A/C 2 on External Air con unit 2 starts up if connected
A/C 2 off External Air con unit 2 stops if connected
Emergency on Fan runs 100% (Free cooling and Air conditioner active, if installed)
Emergency off Fan returns to nominal speed
Default values for the above set points can be found in the manual for the free cooling unit.
Introduction
Generic example
en