15
4.5 FIT THE DRAIN BACK UNIT (DBU) - Figs. 15, 16, 17 or 18
The DBU
must be
fitted vertically, the unit can secured using two fixings and its built-in wall bracket, as shown in Fig. 16
or four screws directly into the wall as shown in Fig. 17. Screws and plugs are supplied with the unit. Using the template
supplied will ensure the correct positioning of the fixing holes.
1. Decide on the position of the DBU, taking into
consideration the clearances and the maximum allowed
distances from the drain back unit and collector. Refer to
Fig. 5.
2. Position the template supplied in the required position,
ensuring it is level, (note that the template includes the
minimum clearances required) and mark the positions
of the fixing holes. Drill the holes to suit the fixing
supplied or alternative fixings suitable for the mounting
surface/wall.
If using only the top fixings, fit two of the screws
supplied with the heads about 5 mm proud so that they
will locate in the keyhole slots on the fixing bracket (see
Fig. 16).
3. Remove the front cover of the DBU (it is a push fit).
Offer the DBU into position and hang it on the two fixing
holes.
Note:
All pipework from the collector must always slope
down towards the drain back unit (at least 40 mm per metre).
There
must not
be any part of the pipework that will allow
water to collect.
Alpha SolarSmart 100 - Installation
Template
Outline of
cylinder case
SOLARSMART 100
DRAIN BACK UNIT
FIXING HOLES
FIXING HOLES
SCREW POSITIONS WHEN
USING HANGING SLOTS
MINIMUM SIDE
CLEARANCE 10 mm
MINIMUM SIDE
CLEARANCE 10 mm
400
245
573
150
150
120
110
200
110
100
8
461
773
573
10
10
156
100
70
80
150
50
70
280
420
Fig. 15
Fig. 17
Fig. 16
Keyhole slots
Fixing holes
Fixing holes
