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Siemens Building Technologies
HVAC Products
4.254
Summer- / wintertime changeover .........................................................261
Input H1 262
4.255
Function selection input H1....................................................................262
4.255.3 Heat generation lock oil / gas or heat pump Setting 4 or 11.................265
4.255.4 Heat demand Setting 5 .........................................................................265
4.256
Minimum setpoint of the flow temperature, contact H1 (TVHw) ............266
4.257
Maximum value of heat demand DC 0...10 V (H1) ................................267
4.258
Operating action of the contact connected to H1...................................267
Input E1 268
4.259
Display of hours run, input E1................................................................268
4.260
Display of number of starts, input E1 .....................................................268
4.261
Function selection input E1....................................................................268
4.262
Operating action of voltage signal at input E1 .......................................270
Output P1 (PWM) ..................................................................................................270
4.263
Function selection P1.............................................................................270
4.264
PWM signal logic P1 ..............................................................................271
4.265
Display of PWM output P1 .....................................................................272
4.266
Output test PWM signal P1....................................................................272
Output Ux (DC 0...10 V)........................................................................................272
4.267
Function selection output Ux..................................................................272
4.268
Maximum value of heat demand Ux ......................................................274
4.269
Voltage output signal logic Ux................................................................275
4.270
Displaying voltage output Ux .................................................................275
4.271
Output test voltage output Ux ................................................................275
276
4.272
Resetting the heating engineer parameters...........................................276
5
Description of the EXP settings .............................................................277
EXP general ..........................................................................................................277
5.1
General frost protection for the plant .....................................................277
5.1.1
Frost protection for the plant ..................................................................278
Oil- / gas-fired boiler EXP......................................................................................279
5.2
5.3
5.4
Switching differential of the boiler temperature (SDK)...........................279
5.5
Minimum limitation of the burner running time.......................................281
5.6
Release integral of burner stage 2.........................................................282
5.7
Reset integral of burner stage 2.............................................................283
5.8
Pump overrun time.................................................................................284
5.9
Operating mode of the boiler .................................................................285
5.10
Protective boiler startup .........................................................................286
Basic Documentation RVP540 / RVP550
Contents
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CE1P2488en
18.10.2002
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