SureCal Vertical Calorifier Connection Instructions

Connection Instructions

First, select a suitable location for your new Surecal calorifier. Place the calorifier in position and secure down using it’s four fixing feet.

The calorifier is fitted with a temperature mixing valve (1). To set the valve turn anti clockwise to the maximum, this will give a maximum water temperature of 65°C. When the knob is fully closed i.e clockwise it is set to 30°C.

The hot out, cold in, optional second coil and PRV are made for 15mm push fit plastic plumbing, Hep20 or speed fit.

Push on your plastic plumbing or compression fitting to the mixer valve (1) for your hot water supply.

Push on your cold feed to the lowest fitting (2) to supply pump pressure cold water to the calorifier and tee off to the mixer valve and connect a cold feed in.

Engine connections (15mm barbed), to the coil (3) - Use heater hose from the engine and pass over the barbed fittings and fix with jubilee clips.

Pipe the outlet of the pressure release valve to the bilges (4) and drain. The pressure release valve can be used as a drain by holding open.

Immersion heater (5) instructions contained on ‘Immersion Connection Instructions’ sheet.

An expansion bottle should be fitted on the hot supply between the thermostatic mixer and first take off (i.e. Taps) This will relieve the increased pressure caused by hot water expansion.

 If there is a risk of freezing when the calorifier is not in use, the calorifier must be drained as part of normal winterisaon/pre storage maintenance activies.