User manual HONEYWELL ZG 215N

[. . . ] With the party switch S1 the night economy option can be suspended. Air-handling system with mixing chamber LF VM TW FT ZG 215N /// /// /// ZG Control Unit VM Servomotor ZR Heating mixing valve LF Air duct sensor TW Temperature selector FT Frost protection thermo - CB2283 Poti // Air-handling system with heating coil LF TW FT VM //////// LF ZG 215N CB2286 // // ZG Control Unit VM Servomotor ZR Heating mixing valve LF Air duct sensor TW Temperature selector FT Frost protection thermo - /// Operation as an Air-handling Control (fig. left both) The operation of the air-handling control is basically the same as for warm water heating. Instead of the flow temperature, the air temperature in the supply duct is measured. The control unit calculates the necessary heat demand and regulates the drive motor so that the desired room temperature is reached. [. . . ] For most 90/70 hot water heating systems, A è 4 is correct as the basic setting. If with this setting (A è4) a constant room temperature is obtai ned and the mixing valve position remains more or less the same over a long period of time, no correction is necessary. If, however, periodic room temperature oscillations occur, because the mixing valve opens and closes intermittently, a larger proportional range is to be set (e. Description of the Operating Diagram With the setting knob A the proportional range can be set. The numeric value set on setting knob A means a proportional range in % (or °C) for an operating range of the actuator of 0 to 100 %. The smaller the numeric value on the setting knob A , the steeper the operating characteristic curve of the regulation is. A steep operating characteristic curve implies that already at a small room temperature oscillation a relatively intense heat convection to the room occurs. With large numeric values on the setting knob A the operating characteristic curve of the control unit is more level. For a small deviation in the set room temperature, the supply of heat to the room is hence changed only slightly and for fine dosing. All the characteristic curves split in the operating point to indicate the rotation of the operating characteristic curve when turning the setting knob A . The illustrated characteristic curves A è 4 and A è 9, 5 correspond to the setting values 4 and 9. 5 on the setting knob A . The operating point (settable with setting knob B ) is to be located for usual heating modes halfway between the largest required and the least possible heating flow temperature. Setting knob 2 A Xp 100 in % 2 Xp 70 in °C Xp 30 in °C Xp 20 in °C 4 4 6 6 8 8 10 10 12 14 12 14 16 16 18 18 20 20 1. 4 2. 8 4. 2 5. 5 7. 0 8. 2 9. 6 10. 9 12. 4 13. 9 0. 6 1. 2 1. 9 2. 4 2. 8 3. 4 4. 0 4. 7 5. 2 6. 0 0. 4 0. 8 1. 2 1. 6 2. 0 2. 2 2. 6 3. 2 3. 6 4. 0 B With setting knob B the operating point of the operating characteristic point can be moved. The corresponding scale is planned in "°C flow temperature" or "% valve position". Basically, the operating point is to be moved with setting knob B to the middle of the system's operating range. It is for example 45 °C for a heating system in which the execution value matches the standard Setting of the operating point: Setting knob design value and which at the lowest outdoor temperature requires a maximum heating water temperature of approx. 70 °C and a minimum temperature of approx. Experience shows that most systems are quite oversized. For the usual 70/50 radiator heating systems, the basic setting B è 45 (instead of 50 °C) is correct. Night decrease: Setting knob C On setting knob C the size of the reduction to be triggered by the timer is to be set. The setting of C gives a parallel shift of the operating characteristic curve to the left (see dotted curve II). This leads to a decrease in the room temperature. The scale division of C corresponds to a room temperature decrease of approx. Example: C è -8 means that the nighttime room temperature target value is lower by 8 K compared to the daytime value, so that the room temperature at night can decrease to approx. [. . . ] Setting knobs B C and operating mode selector S . è Check the time and switch-on point. If the problem still has not been solved after checking the settings, position the setting knob B on +7 The servomotor should now open the mixing valve and the red LED L2 should light up. If this is not the case, the control system has failed. Contact your heating technician. Manual mode In case of the breakdown of the heating mode regulation you can proceed temporarily as follows: n 1. [. . . ]