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Siemens Building Technologies
Basic Documentation RVD110, RVD130
CE1P2381E
HVAC Products
14 Function block D.h.w. heating
27.05.2004
14
Function block D.h.w. heating
14.1 Operating lines
Line
Function, parameter
Unit
Factory setting
Range
101 Release of d.h.w. heating
0
0...3
102 Release of circulating pump (RVD130 only)
1
0...2
103 D.h.w. switching differential
K
5
1...20
104 Legionella function
6
---
/ 1...7, 1-7
105 Setpoint legionella function
°C
65
60…95
106 D.h.w. priority
4
0...4
107 Overrun time charging pump Q3
min
4
0...40
108 Overrun time charging pump Q7
min
4
0...40
109 Max. time d.h.w. heating
min
150
---
/ 5...250
14.2 Mode of operation and settings
This function block contains all d.h.w. parameters, with the following exceptions:
•
Parameters for the control of the actuators
•
Parameters on the locking function level
These parameters are accommodated in separate function blocks.
14.3 General d.h.w. functions
14.3.1 Setpoints
The d.h.w. setpoints can be selected by the end-user on operating lines 41 and 42.
Refer to section 7.3.
14.3.2 Release
of
d.h.w. heating
The type of release of d.h.w. heating can be selected on operating line 101:
•
In the case of d.h.w. heating with storage tanks (plant types no. 2, 3 and 8), there are
4 choices available (see table below)
•
In the case of instantaneous d.h.w. heating systems (plant types no. 4 and 5), d.h.w.
heating is always released. This means that d.h.w. is always available and there are
no settings on the controller required
•
In the case of instantaneous d.h.w. heating systems with storage tank (plant types
no. 6 and 7), there are 4 choices available (see table below).
Release phases with plant types no. 2, 3 and 6 through 8:
Setting Release
0
D.h.w. heating is always released (24 h/day)
1
Release takes place according to the d.h.w. program entered on operating
lines 18 through 23
2
Release takes place according to the heating circuit program entered on
operating lines 6 through 12
3
Release takes place according to the heating circuit program entered on
operating lines 6 through 12. However, the start of the first release phase is
always shifted forward by the time entered on operating line 109 (maximum
time).
With plant types no. 4 and 5, operating line 109 is inoperative. In that case,
setting 3 is identical with setting 2
Release means that the d.h.w. is heated to the nominal setpoint (operating line 41).
At the end of the release phase, the d.h.w. setpoint will change to the reduced setpoint
(operating line 42).
Содержание RVD110
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