Dimplex S1 7KS operating instructions Connection on Heat Source Side, Electrical Connection

pump installations where a power failure cannot readily be detected (e.g. holiday houses), the heating circuit must contain a suitable antifreeze product.

The integrated expansion vessel has a capacity of 24 litres.This capacity is appropriate for buildings with a heated living space floor area of up to 200 m2.

The planner of the heating system should verify that the capacity of the expansion vessel is adequate. An additional expansion vessel may have to be installed, if required (as per DIN 4751 Part 1). Charts in manufacturer catalogues facilitate the proper selection of the proper size according to the amount of water in the system.

CAUTION! With large-capacity heating circuits, the installed expansion vessel (24 litres, 1.0 bar admission pressure) must be supplemented by an additional vessel.

7.3 Connection on Heat Source Side

The following procedure must be observed when making the connection:

Connect the brine line to the flow and return pipe of the heat pump. The supplied strainer and vent must be field-installed in the brine inlet of the heat pump.

The powerful vent must be installed at the highest point of the heat source system

The hydraulic block schematic must be taken into account when so doing.

The brine liquid must be produced prior to charging the system. The brine concentration must be at least 25 %. Freeze protection down to -14 °C can thus be ensured.

Only antifreeze agents on a monoethylene glycol or propylene glycol basis are to be used.

The heat source system has to be vented and leak- tested.

CAUTION! The brine solution must contain at least 25 % of an antifreeze and corrosion protection agent on a monoethylene glycol or propylene glycol basis.

MOUNTING

7.4 Electrical Connection

The following electrical connections must be established on the heat pump.

-Connection of the load wire to the control panel of the heat pump.

-Connection of the control voltage wire to the control panel of the heat pump.

All electrical components required for the operation of the heat pump are located on the control panel..

For detailed instructions concerning the connection of external components and the operation of the heat pump controller refer to the heat pump terminal dia- gram and the operating manual of the controller.

Connection of the load wire to the control panel via terminals X1: L1/L2/L3/PE.

An all-pole disconnecting device with a contact gap of at least 3 mm (e.g. utility company disable contac- tor or power contactor) as well as a 3-pole circuit breaker with simultaneous tripping of all external conductors must be provided . The required cross- sectional area of the conductor is to be selected according to the power consumption of the heat pump, the technical connection requirements of the relevant utility company and all applicable regula- tions. Power consumption data of the heat pump is provided in the product literature and on the nameplate. The terminals are designed for a max. conductor cross-section of 10 mm˝.

CAUTION! The clockwise phase sequence must be observed when connecting the electric load lines (in the case of an incorrect phase sequence the heat pump will deliver no output and generate a lot of noise).

Connection of the control voltage wire is effected via terminals X1: L/N/PE.

If a more powerful brine pump is required than the one integrated, a motor contactor and an appropriate motor protecting switch need to be installed. The contactor must be connected to the terminals of the internal brine pump (controller terminals J12/N03 and X1-N). The power supply of the larger pump must be provided by the mains supply.

7