Potterton NXR4 Installation, Operation & Maintenance Manual page 5

SECTION 1
PAGE 4
CLEARANCES
The minimum boiler room clearances for access, erection and maintenance are given in Fig.2 and Fig.3, the
dimensions are minimum values. There is no minimum clearance above the boiler, however, it is recommended
that clearance is left above the top of the instrument panel to facilitate its removal. At the front of the boiler allow as
a minimum the A dimension, this is to allow access to the combustion chamber for maintenance and servicing. For
P dimension please refer to relevant burner card.
Fig.2 – Boiler Clearances
Nu-Way Oil
Model
A (mm)
409 1580
410 1580
411 1580
412 1580
413 1542
414 1542
415 1542
416 1686
417 1686
No special plinth is required for
this boiler, a simple dry base is
sufficient. Boiler footprint and
base clearance details are given
in Fig.3.
Fig.3 – Boiler Footprint/Base Details
1070
450
POTTERTON COMMERCIAL PRODUCTS DIVISION
INSTALLATION, OPERATION & MAINTENANCE MANUAL
Minimum Clearance (Front)
Nu-Way Gas
A (mm)
1733
1733
1733
1733
1885
1885
2183
2183
2183
A
B
Provision must be made to allow free movement of the boiler on
its base.
*NOTE: Base MUST NOT protrude from rear of boiler.
A B
150mm x 6mm Flat
Plate (Not Supplied
by Potterton)
Riello Oil Riello Gas
A (mm) A (mm)
1555 1725
1555 1725
1600 1725
1600 1785
1610 1785
1610 1785
1610 2000
1950 2000
1950 2100
700
409 410 411 412
1320 1460 1600 1740
1540 1680 1820 1960
NXR4
EOGB Oil EOGB Gas
A (mm) A (mm)
1807 1810
1807 1810
1807 1810
1807 1810
2086 2296
2086 2296
2086 2296
2086 2296
2086 2296
500 min
P
A
P + 200
413 414 415 416
1880 2020 2160 2300
2100 2240 2380 2520
417
2440
2660