CAIRfricostar CAU Controller with Remote Control SUPPLEMENT TO OPERATION MANUAL

CAIRfricostar CAU Controller with Remote Control SUPPLEMENT TO OPERATION MANUAL

Table of Contents CAIRfricostar CAU Controller Table of Contents 1 Functional description of the unit... 3 1.1 Operation mode with dehumidification demand... 3 1.2 System and controls scheme... 4 2 Mounting... 5 2.1 Unit assembly... 5 2.2 Unit function... 6 3 Electrical Connection... 7 3.1 Standard control functions... 7 3.2 Compressor start-up control... 8 3.3 Heater control... 9 3.4 Operating switch in switch box... 10 3.5 Mounting remote control... 10 3.6 Operating remote control... 10 3.7 Wiring diagrams... 11 3.7.1 Control cabinet... 11 3.7.2 Re-heater valve: heater pump (external)... 12 3.7.3 Remote control (external)... 12 Notice! This document presents a supplement to the regular operation manual. Consider the given supplement supplied with the regular operation manual. Make sure to follow the safety instructions, consider the range of application and proper use in the regular manual. Copyright note Disclosing, copying, distributing or taking any action in reliance on the contents of this document is strictly prohibited without express prior consent. Violations entail liability for any damages or other liability arising. All rights in relation to patents, utility patents or design patents are reserved. 2 FG_DC-2013-0109-GB_R2-2018-08 Subject to modufications

CAIRfricostar CAU Controller Functional description of the unit Typ CAU 1 Functional description of the unit The CAIRfricostar CAU is mainly designed for private swimming pools and can be delivered in 4 sizes. The unit operates to dehumidify and heat air in swimming pools in a recirculating-air mode. The unit is supplied with a standard electric controls comprising a remote control sensor in the pool area for dehumidification and reset switch. Two LED-lamps indicate operating and error messages of the unit. For energy saving purposes, air is recirculated without being dehumidified in recirculating-air mode and only reduced air flow is heated. In the second speed the unit starts operating with normal air flow and regular dehumidification mode. At the same time the compressor is activated and humid air is dried using the evaporator. In addition air is heated using condenser oil. At this point install the temperature sensor in the pool water circuit. IMPORTANT DAMAGE TO THE UNIT! Please consider that the water flow through pool water condenser is limited to 700 l/h. A larger water flow causes irreparable damage to the pool water condenser. 1.1 Operation mode with dehumidification demand Supply air fan runs at high speed. The necessary transmission heat is supplied by the re-heater coil. Using an optional pool water condenser a certain amount of excess energy can be fed back into swimming pool water. FG_DC-2013-0109-GB_R2-2018-08 Subject to modufications 3

Functional description of the unit Typ CAU CAIRfricostar CAU Controller 1.2 System and controls scheme M M M M1 M p P P M M p DI AI DO AO Control and regulation system The switch box is supplied with the following main components: Consists of a separate switch box for mounting on units with all necessary components for control functions, wired according to VDE specifications. Electrical connection (via plug or screw terminals) between switch box and unit using factory prepared lines. Power supply for controlling the mixing valve and re-heater pump (including controls). Possible output for pool water pump. The switch box is supplied loose, including fixing material for mounting on the unit. All electronic control and regulation components can be easily replaced. Main isolating switch for all pole downtime of the electrical unit. Group fuses for fan and compressor; safety fuse for pump re-heater circuit 230V, control fuse and control voltage supply unit 24V (safety extra-low voltage or SELV); control of supply-air fan using motor full protection device via PTC temperature sensor and electronic motor-protection trigger device. Control compressor motor with thermal motor protection and interlock for safety chain and control card, control of icing protection, ND, HD. Electronic control card for compressor regulation with minimum run and standstill time as clock protection, service reset button, status messages for timer control and light diode for faults of the refrigeration circuit. Hydrostatic humidity control as a remote control for mounting in the swimming pool, with status, malfunction indicator light and operation switch; operation with protective extra-low voltage; setpoint setting 30-90% r.h.; white colour; surface mounting, dimensions: W/H/D 145/80/30 (mm); supplied separately. Electronic three-point PI-controller for extract-air temperature control with setpoint setting on the switch box including installed NTC extract-air temperature sensor. Output 230V for modulating 3-way valve motor in re-heater circuit. If necessary FläktGroup pool water temperature control for controlling pool water pump consisting of an integrated immersion thermostat, interlocking with compressor operation and output for pool water pump 230V (only control output max. 2A) and time control for registration of actual values (only in combination with pool water condenser). Output for collective error message signal (floating change-over contact). Control possibility of an extract air fan by others, 2-speed, 230 V/max. 150 W 4 FG_DC-2013-0109-GB_R2-2018-08 Subject to modufications

CAIRfricostar CAU Controller Mounting 2 Mounting 2.1 Unit assembly Notice! Here you will find information on how to assemble and install the unit. Mounting and installation shall only be completed by a qualified staff. Qualified licensed staff or other individuals with proper professional training must be experienced in the relevant accident prevention regulations, as well as other generally recognized safety and occupational health codes. 27 1 Supply-air fan 2 Re-heater 3 Air condenser 5 Pool water condenser 8 Return-air filter 11 Evaporator 12 Compressor 13 Switch box 16 Condensate drain 17 Unit identification plate 18 Controls 19 Condensate tray 21 Pool water thermostat (supplied separately) 22 Supply-air sensor 23 Temperature sensor 24 Pressure switch filter 27 Remote control FG_DC-2013-0109-GB_R2-2018-08 Subject to modufications 5

Mounting CAIRfricostar CAU Controller 2.2 Unit function Return air Supply air Indoor swimming pool by others Duct system Return air by others Duct system Supply air CAIRfricostar CAU Notice! NOTE ON UNIT CONFIGURATION! The installer's job is to connected the CAIRfricostar CAU to the duct system. Data on unit installation and mounting: see user information. Specifications: Refer to the detailed order issued by factory or sales office. Electric lines: Refer to detailed wiring diagrams supplied with the unit. 6 FG_DC-2013-0109-GB_R2-2018-08 Subject to modufications

CAIRfricostar CAU Controller Electrical Connection 3 Electrical Connection 3.1 Standard control functions Unit ON Move main switch or operator switch from 0-Position Fan in 1st speed if not manually set in 2nd speed No Hall humidity setpoint using 1/2 switch dirrerence 913.F06 913.120 Yes No Heating with temperature controller 913.T02 913.030 Yes Fan speed 2 ON Valve control in re-heater circuit No Compressor minimumum runtime 3 min expired Yes FG_DC-2013-0109-GB_R2-2018-08 Subject to modufications 7

Electrical Connection CAIRfricostar CAU Controller Compressor ON No Pool water below setpoint temp. -0.5K dip therm. Yes Pool water condenser pump output [230 V] ON Min. 5 min No Pool water above setpoint temp. +0.5K dip therm. Yes Pool water condenser pump output [230 V] OFF No Hall air humidity below setpoint 1/2 switching difference 913.F06 913.120 Yes Min. runtime 5 min. expired Compressor OFF 8 FG_DC-2013-0109-GB_R2-2018-08 Subject to modufications

CAIRfricostar CAU Controller Electrical Connection 3.2 Compressor start-up control Compressor (2-point operation) Setpoint % r.h. 3.3 Heater control Open Close Mixing valve Re-Heater (PI Function) Setpoint FG_DC-2013-0109-GB_R2-2018-08 Subject to modufications 9

Electrical Connection CAIRfricostar CAU Controller 3.4 Operating switch in switch box 1 1 Filter error signal reported by filter maintenance 2 2 Main switch unit ON/OFF Notice! Consider the risk of freezing of the re-heater coil in cases of extended shutting-down periods in the swimming pool or unit decommissioning. 3 3 Temperature control setpoint for hall temperature 3.5 Mounting remote control Installation of the remote control within the swimming pool enables to measure average air humidity. Humidity setpoint in the swimming hall amounts to 40-60% r.h. Mount the remote control at a height of 1.5 to 1.8 m and a minimum 1 m from away from doors, windows and radiator/ heating surfaces. Open the casing, mark the screw holes and use the appropriate fixing material to secure the casing on the wall. Avoid direct solar radiation, contact with cold walls and components and direct air discharge caused by FläktGroup CAIRfricostar unit. Protect the remote control against splash water! 3.6 Operating remote control 1 2 3 1 Operator switch with functions I (ON) and 0 (OFF); is also used as a Reset in cases of errors. 2 Rotary switch for setting the required relative air humidity in the hall 3 Error display (red) 4 Operating display (green) 4 10 FG_DC-2013-0109-GB_R2-2018-08 Subject to modufications

CAIRfricostar CAU Controller Electrical Connection 3.7 Wiring diagrams 3.7.1 Control cabinet Notice! Further details are available in the wiring diagram for the switch box. Pool water thermostat external Pool water pump 230 V/max. 500 W Outgoing-air fan 230 V/max. 150 W FG_DC-2013-0109-GB_R2-2018-08 Subject to modufications 11

Electrical Connection CAIRfricostar CAU Controller 3.7.2 Re-heater valve: heater pump (external) With NE pump operation with final position switch Remove the jumper! 4-pipe Valve open Contact closed! 3-pipe 3.7.3 Remote control (external) ON/OFF FAULT OPERATION 12 FG_DC-2013-0109-GB_R2-2018-08 Subject to modufications

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FG_DC-2013-0109-GB_CAIRfricostar_CAU_OM_R2-2018-08_150dpi Copyright 2018 FläktGroup WWW.FLAKTGROUP.COM CAIRfricostar FläktGroup is the European market leader for smart and energy efficient Indoor Air and Critical Air solutions to support every application area. We offer our customers innovative technologies, high quality and outstanding performance supported by more than a century of accumulated industry experience. The widest product range in the market, and strong market presence in 65 countries worldwide, guarantee that we are always by your side, ready to deliver Excellence in Solutions. PRODUCT FUNCTIONS BY FLÄKTGROUP Air Treatment Air Movement Air Diffusion Air Distribution Air Filtration Air Management Air Conditioning & Heating Controls Service» Learn more on www.flaktgroup.com or contact one of our office