Siemens Albatros2 AVS37 User Manual Page 81
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Siemens Switzerland Ltd User Manual CE1U2353en
HVAC Products Cooling circuit 02.06.2009
While the “Room temperature limitation“ function is active, no cooling request is sent to
the heat source.
The function is deactivated in the following circumstances:
• No room temperature sensor
• "Room temp limitation" = ---
• "Room influence“ (928) = --- (weather compensation only)
ON
TRKw-SDR
2355Z10
TRKw
TRx
P
OFF
°C
TRx Actual value of room temperature
TRKw Room temp. setpoint cooling
(with summer compensation)
SDR Room switching differential
B Pump
t Time
Mixing valve control
Line no. Operating line
938 Mixing valve cooling offset
939 Actuator type
2-position ¦ 3-position
940 Switching differential 2-pos
941 Actuator running time
945 Mixing valve in heating mode
Control ¦ Open
The refrigeration demand from the mixing valve circuit to the heat source is reduced by
the programmed value. The purpose of this reduction is to enable the mixing valve
controller to compensate for the fluctuation in temperature caused by the heat source
(2-point control action).
2-position
The controller drives the actuator with only 1 relay output. When the output delivers a
signal, the valve opens. When there is no signal, the valve will close automatically.
3-position
The controller drives the actuator with 2 relay outputs. 1 of the outputs is used for
opening the valve and 1 for closing the valve.
For the 2-position actuator, the "2-position switching differential" must also be adapted.
Three-position actuators are not affected by the switching differential.
For the 3-position actuator, the running time of the mixing valve actuator can be
adjusted. The actuator running time has no effect on two-position actuators.
Defines the position of the mixing valve (Y1/Y2) when heating mode is active.
This parameter has no effect in systems with hydraulically separate heating and cooling
circuits.
Controls The valve is used for control in heating and cooling mode.
Open
The valve is used for control in cooling mode and is open in heating
mode.
Dewpoint monitoring
Mixing valve cooling offset
A
ctuator type
Switching differential 2-
pos
A
ctuator running time
Mixing valve in heating
mode
- Building Technologies 1
- HVAC Products 1
- Contents 3
- 1 Overview 9
- 1.1 Product range overview 10
- (optionally with additional 11
- 2 Safety notes 12
- 3 Mounting and installation 13
- On DIN rail 14
- 000020RVS46.530/109 15
- Use Space Connector type 16
- AVS82.490/109 16
- AVS82.491/109 16
- X50 of the basic unit using 17
- 3.4 Operator unit AVS37.294 19
- 3.5 Operator unit AVS37.390 20
- 3.6 Room unit QAA55… 21
- 3.7 Room unit QAA75… 22
- Dimensions and drilling plan 23
- 3.8 Wireless components 24
- Operator section 27
- Testmode 27
- Radio transmitter 28
- Outside sensor 28
- 4 Commissioning 31
- 5 Handling 32
- Xxxxxxxxxxxxxxxxxxxxxxxxxxx 33
- Text3 Text4 35
- 30:Flow sensor 1 35
- 4 8 12 16 20 24 36
- 2359Z140 36
- Reset ? yes 36
- 5.1.2 Programming 37
- 5.1.3 User levels 38
- Time of day and date 39
- 5.1.4 Overview of settings 40
- 0 0 20 °C 43
- Off ¦ On 46
- 5.2 AVS37.390 54
- 2354Z1 3 55
- 3.1.2 Programming 56
- 5.2.2 User levels 57
- 5.2.3 Overview of settings 58
- 5.3 QAA55 59
- 5.3.2 Programming 61
- 6 The settings in detail 62
- 40 Used as 63
- Heating circuits 1 and P 64
- All heating circuits 64
- 6.4 Time programs 65
- 6.3 Radio 65
- 6.5 Holidays 66
- 6.6 Heating circuits 66
- Setpoints 67
- Heating curve 67
- HC1 HC2 HCP 68
- Setting line e.g 69
- 750 1050 1350 Room influence 70
- 770 1070 1370 Boost heating 71
- Quick setback 72
- Optimum start / stop control 73
- Raising the reduced setpoint 73
- 830 1130 Mixing valve boost 74
- 832 1132 Actuator type 74
- Excess heat draw 76
- Remote control 76
- 6.7 Cooling circuit 77
- Summer compensation 78
- 928 Room influence 79
- 932 Room temp limitation 80
- TRKw-SDR 81
- 950 Flow temp diff dewpoint 82
- 6.8 DHW 83
- 1620 release 84
- 1630 Charging priority 84
- 6.9 Hx pumps 86
- 6.11 Solar 87
- 3880 Antifreeze 88
- 3884 Pump capacity 88
- 6.12 DHW storage tank 89
- 0 6121824 90
- 5085 Excess heat draw 91
- 5093 With solar integration 91
- 5544 Actuator running time 91
- 6.14 Configuration 92
- 5730 DHW sensor B3 93
- Relay output QX1 93
- 1/U1 and F2/U2) 98
- 2=10VU1=0V 99
- Line no. Operating line 100
- QX extension module 102
- BX extension module 102
- H2 extension module 102
- 01234-3-4-5-6 -1 103
- RVS46.543 onl 104
- Sensor state 105
- Parameter reset 105
- Plant diagram 105
- 6.15 LPB system 106
- 6621 Summer changeover 107
- 6623 Optg mode changeover 107
- 6625 DHW assignment 107
- 6627 Refrigeration demand 107
- 6640 Clock mode 108
- 6650 Outside temp source 108
- 6.16 Faults 109
- 7140 Manual control 110
- 6.18 Input / output test 111
- 6.19 State 112
- State of DHW 113
- State of solar 113
- 6.21 Diagnostics, consumers 114
- 6.22 List of displays 115
- 6.22.2 Maintenance code 116
- 7 Plant diagrams 117
- DHW storage tank (DHW) 118
- Heating/cooling circuit 119
- Heat converter 119
- Extra functions 119
- AVS75.390 120
- Primary controller 121
- Primary DHW controller 121
- Instantaneous DHW heater 121
- Legend mains voltage 122
- Legend low-voltage 122
- 123/135 123
- 124/135 124
- temp. -20…65 °C 125
- temperature -20…65 °C 125
- Without packaging 126
- (±10 %) 126
- class 1K3, temp. -20…65 °C 127
- 8.8 Sensor characteristics 129
- 130/135 130
- 131/135 131
- HVAC Products 02.06.2009 131
- 132/135 132
- 133/135 133
- 9 Revision history 134
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