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Heat exchanger
ET - NU25 - ET - NU40 - ET - NU60 - ET - NU90
ET - CA25 - ET - CA40 - ET - CA60 - ET - CA90
INSTALLATION AND OPERATING INSTRUCTIONS
To be read carefully and kept for future reference
CHAUFFAGE ET DÉSHUMIDIFICATION
FR | PAGE 1 - EN | PAGE 15 - DE | SEITE 29 - ES | PÁGINA 43
2020/11 - Indice de révision : J - Code : 33035
15/56
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Summary of Contents for BWT ET-NU 25 kW
- Page 1 Heat exchanger ET - NU25 - ET - NU40 - ET - NU60 - ET - NU90 ET - CA25 - ET - CA40 - ET - CA60 - ET - CA90 INSTALLATION AND OPERATING INSTRUCTIONS To be read carefully and kept for future reference FR | PAGE 1 - EN | PAGE 15 - DE | SEITE 29 - ES | PÁGINA 43 15/56 CHAUFFAGE ET DÉSHUMIDIFICATION...
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Page 2: Table Of Contents
1. TECHNICAL DATA ..................17 2. INSTALLATION OF THE HEAT EXCHANGER ..........17 Installation site ........................17 Hydraulic connections ......................17 3. ELECTRICAL WIRING .................. 18 4. STARTING UP THE HEAT EXCHANGER ............20 5. OPERATING CONTROLS ................20 6. WINTERIZING ....................21 7. -
Page 3: Technical Data
TECHNICAL DATA Unit Primary °C Secondary °C Power Primary 0.72 1.74 Flow rate Secondary Primary connections Threading 3/4ʺ Secondary connections PVC union, female, solvent 50 to 63 mm Pool water 2 to 40 °C Operating temperature Primary 45 to 90 °C water loop Primary 2 bars... -
Page 4: Electrical Wiring
The heat exchanger was originally designed for a pool water flow from left to right. The water from the boiler enters from the left, flows through the heat exchanger in the opposite direction to the pool water and exits on the same side lower down. The temperature sensor is inserted into the recess on the left-hand side of the heat exchanger (at the pool water entry point). - Page 5 Live Neutral Earth Filtration contact Slaving the exchanger circulation pump to the filtration pump. If the circulation pump is not slaved to the filtration pump, shunt the two terminals using the shunt provided. When a heating demand is detected the circulation pump will start up even if the filtration pump is not running.
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Page 6: Starting Up The Heat Exchanger
STARTING UP THE HEAT EXCHANGER Once the exchanger is plumbed in and wired, do the following: • Start up the filtration pump and make sure that there are no leaks on the hydraulic circuit. • Open the isolating valves on the boiler’s primary circuit. •... -
Page 7: Winterizing
Drain the heat exchanger body (using the drain valve on the installation or by loosening one of the unions. TABLE OF CODES Code Description 9200200 Heat exchanger BWT ET-NU 25 kW 9200400 Heat exchanger BWT ET-NU 40 kW 9200600 Heat exchanger BWT ET-NU 60 kW 9200900... -
Page 8: Technical Data
TECHNICAL DATA Head loss on the primary circuit (BOILER) 25 kW 40 kW 60 kW 90 kW Primary circuit flow rate (m3/h) Head loss on the secondary circuit (POOL) 25 and 40 kW 60 kW 90 kW Secondary circuit flow rate (m3/h) 22/56 2020/11 - Indice de révision : J - Code : 33035 CHAUFFAGE ET DÉSHUMIDIFICATION... - Page 9 - Heat exchanger BWT 25 kW - Power output as a function of the boiler and pool water temperatures pool water at 10°C pool water at 20°C pool water at 30°C Temperature BOILER (°C) - Heat exchanger BWT 40 kW -...
- Page 10 - Heat exchanger BWT 60 kW - Power output as a function of the boiler and pool water temperatures pool water at 10°C pool water at 20°C pool water at 30°C Temperature BOILER (°C) - Heat exchanger BWT 90 kW -...
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Page 11: Foot Print Of The Heat Exchanger
FOOT PRINT OF THE HEAT EXCHANGER 176.6 176.6 196.1 196.1 25/56 CHAUFFAGE ET DÉSHUMIDIFICATION 2020/11 - Indice de révision : J - Code : 33035... -
Page 12: Footprint Of The Presassembled Heat Exchanger
FOOTPRINT OF THE PRESASSEMBLED HEAT EXCHANGER 131.7 26/56 2020/11 - Indice de révision : J - Code : 33035 CHAUFFAGE ET DÉSHUMIDIFICATION... - Page 13 27/56 CHAUFFAGE ET DÉSHUMIDIFICATION...
- Page 14 28/56 2020/11 - Indice de révision : J - Code : 33035 CHAUFFAGE ET DÉSHUMIDIFICATION...
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