Direct Model - Heatrae Sadia Megaflo Eco Solar Series Product Manual

DIRECT MODEL

Immersion Heater(s)
The MEGAFLO Eco Solar Direct is supplied with either one (D models) or two (DD models) factory fitted immersion heaters. Each immersion heater
is rated 3kW at 240V.
To remove the immersion heater:
Open the cover to the upper immersion heater. Disconnect the two wires to element tabs, pull out the two thermostat capillaries (remember which
way round they go) and move out of the way. Unscrew the brass backnut using the key spanner provided. Remove the immersion heater assembly
and sealing gasket from the boss.
Replacement:
Insert the immersion heater and sealing gasket into the required boss. Ensure that the sealing gasket is not displaced when inserting. It may be
helpful to support the immersion heater using a round shafted screwdriver inserted into the thermostat pocket. Hand tighten the brass backnut.
Secure the immersion heater in position by tightening with the key spanner provided. Replace the thermostat capillaries, spiral one in first (making
sure capillary tubes do not touch element legs). Reconnect element wires from thermostat.
If an additional immersion heater is required order part no. 95:970:554.
Wiring (See Figure 16, p.23)
All electrical wiring should be carried out by a competent electrician and be in accordance with the latest I.E.E. Wiring Regulations. Each circuit
must be protected by a suitable fuse and double pole isolating switch with a contact separation of at least 3mm in both poles. The
immersion heater(s) should be wired in accordance with Figure 15, (p. 23)
be 1.5mm 2 3 core HOFR sheathed and must be routed through the cable gland provided with the outer sheath of the cable firmly secured by
tightening the screw on the cable gland. Replace the immersion heater cover(s) before operating ensuring that the threaded edge clip is in position
to provide a suitable thread for the cover screw.
DO NOT OPERATE THE IMMERSION HEATER(S) UNTIL THE MEGAFLO Eco SOLAR HAS BEEN FILLED WITH WATER.
Operation
See Figure 16, (p. 23) for details on how to adjust the temperature setting of the heater. The thermostat incorporates a thermal cut-out that will
switch off the immersion heater in the event of a thermostat failure. The thermal cut-out reset button position is indicated on Figure 16, (p. 23).
DO NOT BYPASS THE THERMAL CUT-OUT IN ANY CIRCUMSTANCES.
Access to Control Unit:
Disconnect from mains supply before removing any covers.
Removing the Control Cover:
• Unscrew the large screw using a flat ended screw driver.
• Lift from bottom of cover at point indicated until cover comes
away freely
Replacing the Control Cover:
• Tilt and align the top 2 lugs in the holes indicated
• Firmly press the cover until it "snaps" back in place.
• Tighten the large screw ( DO NOT OVER TIGHTEN ).
Unvented Hot Water Cylinder
22
. The immersion heaters MUST be earthed. The supply cable should
LIFT OFF
LIFT FROM THIS POINT
LUGS
REPLACE