A.O. Smith 28 30 50 60, Installation & Service Manual

Page: 21 / 96

Technical specifications
Release R.1.3 UK 21
is
Table 3.4 Dimensions
Dime
nsion Description BFC 28 BFC 30 BFC 50 BFC 60
A Total height (mm) 1370 1900 1900 1900
D Diameter of the appliance (mm) 705 705 705 705
G Diameter of air supply/flue gas discharge (mm) 80/125 100/150 100/150 100/150
K Height of the gas connection (mm) 1270 1810 1810 1810
M Height of cold water supply connection (mm) 160 160 160 160
N Height of hot water outlet connection (mm) 1405 1920 1920 1920
P Height of cleaning and inspection opening (mm) 200 200 200 200
R Height of drain valve (mm) 75 75 75 75
S Height of T&P valve (mm) 890 1415 1415 1415
W Height of condensation drainage (mm) 110 110 110 110
X Height of air supply connection (mm) 1205 1730 1730 1730
1 Cold water supply connection R 1½ (external)
2 Hot water outlet connection R 1½ (external)
3 Gas control connection Rp ¾ (internal)
4 Drain valve connection (external) ¾”
5 T&P valve connection (internal) ¾” NPT 1 - 11.5 NPT
6 Dimensions cleaning and inspection opening
(mm)
95 x 70
7 Condensation drainage connection (internal) Ø 40 mm Rp 1 Rp 1 Rp 1
Table 3.5 General and electrical data
DESCRIPTION Unit BFC 28 BFC 30 BFC 50 BFC 60
Capacity litres 217 368 368 368
Maximum working pressure bar 8 8 8 8
Empty weight kg 175 225 225 225
Heating time
∆
T = 45
o
C minutes 23 35 24 20
Number of anodes - 4 4 4 4
Number of bar burners/orifices - n.a. n.a. n.a. n.a.
Number of flue tubes/flue baffles - 1/? 1/? 1/? 1/?
Fan rotational speed at ignition r. p.m. 4500 4500 4500 4500
Working speed of fan rpm 4980 5400 6000 6660
Diameter of air restrictor mm 23.0 23.0 28.0 29.0