User manual VAILLANT VAI 2-035 WN TECHNICAL DOSSIER

[. . . ] WALL MOUNTED UNITS Technical Dossier WALL MOUNTED UNITS VAI 2-025 WN VAI 2-035 WN VAI 2-050 WN VAI 2-065 WN ENG 2010 1- CONTENTS 1- CONTENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2- TECHNICAL SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3- TEMPERATURE BY CAPACITIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4- WIRING DIAGRAMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] 3) Preheating release condition: If T > ºC or user turns on the machine and compressor runs, preheating function will stop. 7. 4 FAN-ONLY MODE -Temperature setting function is disabled, and no setting temperature display. -In this mode, the action of louver is the same as in cooling mode. -The action of auto fan in fan-only mode is the same as auto fan in cooling mode with setting temperature. 17 ENG 7- PCB EXPLANATION 7. 5 COOLING MODE After starting, the operation frequency of compressor submits to following rule. When the machine is running and T(=room temp. ­ setting temp. ) changes, the frequency of compressor will rise or descend a grade (7 minutes after starting). After starting, if T stays in a zone for 3 minutes, the frequency will change as follow: Zone A: Current frequency rise a grade till the maximum grade F8. Zone B: Keep the current frequency of compressor. Zone C: Descend the current frequency of compressor until F1. Zone D: Compressor stops after running as the minimum frequency F1 for 60 minutes or T is less than -ºC. Indoor heat exchanger anti-freezing function. If T is lower than 0ºC, the compressor stops and resumes when T>ºC. Outdoor unit current control in cooling mode(refer to the parameter table) Rating capacity test function 1) Set the indoor unit with remote controller as: high fan, 17ºC in cooling mode, then press "TURBO" button on controller 6 times or more within 10 seconds(make sure indoor unit receives these signals), the machine will turn into rating capacity test mode, the buzzer will make a "di" sound for seconds continuously. Also, indoor fan will change to rating speed, the frequency of compressor will be fixed as rating value. Any condition of above is not satisfied, the machine can not be turned into rating capacity test mode. ) The machine will quit from the rating capacity test mode if running for hours or changing fan speed or setting temperature. ENG Turbo function(press the "TURBO" button on remote controller) 1) Elevate current frequency to a higher grade. 3) After running for 30 minutes the machine will turn back to previous setting mode. 1) In cooling mode, indoor fan runs all the time and the speed can be selected as high, medium, low and auto. ) Auto fan in cooling mode acts as follow: 18 7- PCB EXPLANATION Condenser high temperature protection function(in cooling and drying mode) If T3>60ºC for seconds, compressor will stop immediately, and the machine will not resume until T3<ºC. 7. 6 DRYING MODE Indoor fan speed is fixed at breeze grade and can't be changed. The horizontal angle is the same as in cooling mode. Overlow room temperature protection: In drying mode, if room temperature is lower than 10, compressor will stop and not resume until room temperature climbs up to 1ºC. Evaporator anti-freezing protection, condenser high temperature protection and outdoor unit frequency limit are valid, and they are the same as that in cooling mode. Horizontal louver action is the same as that in cooling mode. 7. 7 HEATING MODE Indoor fan action: 1) Anti-cold-wind function. [. . . ] If the machine changes operation mode from heating mode to some other mode, -way valve will be delayed off minutes after compressor stop. For defrosting, please refer to the passage "defrosting mode". ENG 7- PCB EXPLANATION 7. 11 TWO SPEEDS OUTDOOR FAN FUNCTION Outdoor fan starts at the same time with compressor, but stops 30 seconds later than compressor `s stop. Outdoor fan action in heating mode(including heating in auto mode). Outdoor fan action in cooling & drying mode(including cooling in auto & forced mode). above. 7. 12 TIMER FUNCTION -Timing range is hours, and the minimum resolution is 1 minutes. [. . . ]