POTTERTON COMMERCIAL PRODUCTS DIVISION
SECTION 4
INSTALLATION, OPERATION & MAINTENANCE MANUAL
NXR3
PAGE 15
16.
Combustion Chamber Door
– (Fig. 6 – items 27,
30, 31 and 32). Fit the door sealing braid in place
then mount the combustion chamber door. (Fig. 6
– item 11). Secure using the door hinge pins and
fix in place over the door guides securing with
HM10 nuts and HM10 x 30 bolts. Ensure all
manual handling techniques are adhered to.
17.
Flueway Door
– (Fig. 6 – items 23 to 29). Fit the
door sealing braid in place then mount the flueway
door (Fig. 6 – item 11). Secure using the door
hinge pins and fix in place over the door guides
securing with HM10 nuts and HM10 x 30 bolts.
Ensure all manual handling techniques are
adhered to.
18.
Burner Adaptor Plate
– (Fig. 6 – items 28 and
29). Fit the burner adaptor plate using the four off
HM12 x 35 nuts and M12 washers to the
combustion chamber door.
19.
Burner
– After fitting the burner adaptor plate to
the burner door, it is essential to cut out the
burner door insulation to the diameter of the
burner draft tube, to allow the burner to pass
through without damaging the door insulation.
INSULATION & CASING FRAME ASSEMBLY
1.
Lower Rear Insulation
– Screw the hexagonal
spacers onto the rear section’s three spacer pads
and partly screw in a TH M5 x 10 screw to each
spacer. Fit the 100mm thick insulation onto the
rear section. (There are three holes in the
insulation to allow it to fit over the spacers).
2.
Lower Rear Casing
– (Fig. 13 – item 51). Fit the
lower rear casing over the three spacers and
tighten the three screws.
3.
Bottom Insulation
– (Fig. 9). Place the bottom
insulation blanket underneath the boiler and fold
around the bottom tie rods to secure. Ensure that
all personal protective equipment is worn.
Fig. 9 - Insulation Position
4.
Body Insulation Blanket
– (Fig. 9). Wrap the
body insulation blanket around the boiler. Push
the ends of the tie rods through the slots in the
insulation blanket. Tuck the bottom of the blanket
under the bottom of the boiler.
NB: For 38 & 39
models the body insulation blanket is supplied
in two parts, to be positioned side by side, the
large part towards the front.
5.
Casing Frame Cross Members
– (Fig. 13 – item
53). Fit the casing frame cross members to the
front and rear. They locate on the ends of the tie
rods, secure with nuts and washers. Note that the
front cross member has a black coloured
protection clip (to protect burner wiring which
passes close by) which should be at the front right
hand side of the boiler – irrespective of the
handing of the combustion chamber door.
6.
Casing Frame Support Rail
– (Fig. 13 – items
54 and 55). Fit the left and right casing frame
support rails to each side of the boiler (Fig. 10).
Ensure that they are correctly orientated. Secure
the casing frame support rails to the casing frame
cross members with nuts washers and 4 off HM8
x 16 bolts.
Fig. 10 – Casing Support Frame
Top Insulation
Blanket
Rear Insulation
Blanket
Side Insulation
Blanket
Bottom Insulation
Blanket
Eight off
screws
Front of boiler
Secure with
bolt & washer
Casing frame
cross member
Casing frame
support rail
Rear of
boiler
Black
protection clip
Tie rods