Dimplex SI 50ZS, SI 75ZS, SI 100ZS manual Connection on Heat Source Side, Electrical Connection

7.3Connection 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.

CAUTION! The supplied strainer must be fitted in the heat source inlet of the heat pump in order to protect the evaporator against the ingress of impurities.

In addition, a powerful vent must be installed at the highest point of the heat source system. The hydraulic plumbing diagram must be observed here.

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 products on the basis of mono- ethylene glycol or propylene glycol may be used.

The heat source system must be vented (de- aerated) and checked for leaks.

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

7.4 Electrical Connection

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

-Connection of the control wire to terminals X1: L/N/PE in the control box of the heat pump.

-Connection of the load wire to terminals X5: L1/L2/L3/PE in the control box of the heat pump.

-The control of the brine pump is effected via the controller N1/J12/N03/N + PE (max. 200 W), or a pump contactor connected to these terminals (without PE). If a motor protective switch is used, the auxiliary contact (NC contact) needs to be connected to N1/J5/ID5 and X2, instead of the wire jumper which must be removed.

All electrical components required for the operation of the heat pump are located in the control box.

MOUNTING

For more detailed instructions concerning the connection and functioning of the heat pump controller (e.g. the supplied external wall sensor) please refer to the enclosed operating manual of the controller.

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 conductors 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 35 mm˝.

CAUTION! The clockwise phase sequence must be observed when connecting the load lines (the heat pump will deliver no output and will be very noisy when the phase sequence is incorrect).

The power cable must be run through the guide tubes, inserted into the side of the control box and secured by means of the strain relief.

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