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INSTALLATION, OPERATION AND MAINTENANCE
BEFORE YOU BEGIN INSTALLATION READ THE
MANUAL CAREFULLY
WARNING
Only qualified personnel, should install and maintain this equipment.
Unauthorized alteration or improper maintenance of this unit may release
the manufacturer from any warranty claims.
Check all electrical connections to all components within the heater for
tightness. Connections can become loose during shipment and handling,
this can cause electrical components to burn out.
CAUTION
The heater must be installed in accordance with the country/regional
requirements & regulations. In any event the work must be carried out by a
suitably qualified electrician, who will provide a certificate of conformity
upon the completion of work. The power supply must be fitted with an RCD.
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Summary of Contents for Thermalec 12THR
- Page 1 INSTALLATION, OPERATION AND MAINTENANCE BEFORE YOU BEGIN INSTALLATION READ THE MANUAL CAREFULLY WARNING Only qualified personnel, should install and maintain this equipment. Unauthorized alteration or improper maintenance of this unit may release the manufacturer from any warranty claims. Check all electrical connections to all components within the heater for tightness.
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Page 2: Important Safety Instructions
IMPORTANT SAFETY INSTRUCTIONS When using this electrical equipment, basic safety precautions should always be followed, including the following. 1) READ AND FOLLOW ALL INSTRUCTIONS. 2) TO REDUCE THE RISK OF INJURY: The water in a pool or tub should never exceed 40°C (104°F). A water temperature more than 40°C (104°F) is considered unsafe for all persons. - Page 3 , we are justly proud of our electric pool heaters. In the few pages that follow, you will find ® outline details of the range and of some of the features that make Thermalec heaters the natural quality choice for any size or type of pool or spa. This manual provides installation procedures, operating and ®...
- Page 4 (113°F) and has one manual reset type high temperature limit thermostat set at 48°C (118°F). Installation: Location Thermalec swimming pool heaters are quiet, do not emit exhaust fumes and may be conveniently located in a shed or basement. Normal positioning of the pool heater should be near the pool filtration system.
- Page 5 Installation: Plumbing Pipe the heater as shown in Fig. 1 to the inlet (left) and outlet (right) openings on the side. Connect the heater in line between the filter discharge and pool. The water line coming from the filter should be connected to the heater inlet, and the discharge line to the pool should be connected to the outlet.
- Page 6 The maximum flow rates are only recommended flow rates to minimize scale formation and to reduce wear on the elements. The heater is fitted with a pressure relief valve set to lift at 2 Bar (29 psi). Maximum flow rates throughout your system will depend on your system configuration. Flow Rate 3 kW 4 kW...
- Page 7 Reverse two probes. Controller probe is situated at the left-hand end of the element plate; the safety thermostat probe at the right (marked with a short length of white sheathing); Reinstate the top cover before reconnecting connecting electrical supplies. Pipe connections are stub flanges to suit 1 1/2" (12kW) nominal bore pipe (uPVC or ABS). If using ABS, the solvent jointing compound must be suitable for both materials.
- Page 8 To access the terminals, remove the heater cover and the plastic terminal cover. Single-phase. All 12THR heaters are delivered configured for single-phase operation. It is vital that all wires are firmly terminated into the appropriate terminal (L+, N or E). Ensure that the cable is of sufficient diameter to ensure a good clamp is made.
- Page 9 Three-phase. The standard 7.5, 9 and 12kW heaters can be configured to operate on three-phase by carrying out the following modification: Remove brown wire from between L+ terminal block and contactor pole L2 Remove brown wire from between L+ terminal block and contactor pole L3 Connect L1 incoming phase wire to terminal block L+ Connect L2 incoming phase wire directly to contactor pole L2 Connect L3 incoming phase wire directly to contactor pole L3...
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Page 10: Fault Finding
FAULT – FINDING Safety Warning. The electrical supplies to the heater are potentially lethal. All maintenance and repair operations should be carried out by trained personnel, supported by appropriate safe systems of work. Before removing the top cover ensure that, both the main power supply and, the pump interlock supply, are both isolated. - Page 11 Total Bromine: Max 4.5 mg/litre Total Dissolved Solids (TDS) / Calcium hardness 200 - 1,000ppm Thermalec® heaters are suitable for use with salt water pools with a salt concentration up to 8000ppm (8g/litre). Water chemistry is complicated if in doubt seek expert advice.
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