Atmos Multi Series - Technical Data

Natural Gas & Propane Natural Gas Propane
3.Technical Data
24/80 24 / 80 Plus 32 / 80 Plus 32 / 80 Plus
CONDENSING MODE (Return < 55°C)
Heat Out
p
ut to radiators kW min - max 7·3 - 22·5 7·3 - 22·5 9·8 - 29 9·8 - 29·9
Maximum heat to radiators Btu/h
r
76,800 76,800 99,000 102,000
Gross efficienc
y
max - min 98 - 91% 98 - 91% 98 - 91 % 98 - 91%
NON-CONDENSING MODE
(
80/60°C flow/return
)
Heat Out
p
ut to radiators kW min - max 6·9 - 21·5 6·9 - 21·5 9·3 - 27·6 9·3 - 28·5
Maximum heat to radiators Btu/h
r
73,400 73,400 94,200 97,300
Gross efficienc
y
max - min 93 - 87% 93 - 87% 93 - 86% 93 - 86%
Seasonal efficienc
y
(
Sedbuk certified
)
% 91 3 91·3 91 91
Gas flow rate m3/hr natural
g
as min/max 0 8 - 2·6 0·8 - 3·3 1·1 -3·5
Gas flow rate m3/hr
p
ro
p
ane min/max 0 3
–
0.9 0·3 - 1·2 0.4
–
1.5
Flue gas temperature min/max°C
35/110°C 35/110°C 40/115°C
40/115°C
HOT WATER SYSTEM
Maximum heat to hot water kW 17·4 26·4 27·6 28·5
Hot water flow rate maximum litres/min at 2ba
r
25 25 25 25
Reheat time from 10 to 60°C minutes 20 12 11 10
70% reheat time minutes 17 10 9 9
Hot water at 40°C instantaneousl
y
(
litres
)
133 133 133 133
Hot water
p
er hour at 40°C
(
litres
)
450 700 725 750
Hot water
p
er hour at 40°C
(g
allons
)
100 150 160 165
EMISSIONS
NOx
(
avera
g
e
)
emission
ppm
18 18 19 19
CO
(
avera
g
e
)
emission
ppm
10 10 20 20
GC Numbe
r
41-249-02 41-249-03 41-249-04 41-249-04
COMMON DATA
Hot water tem
p
erature settin
g
ran
g
e 60 to 70°C
Central heatin
g
settin
g
ran
g
e 60 to 90°C
Hot water tank ca
p
acit
y
80 litres
Primar
y
water ca
p
acit
y
2·2 litres
Hot water ex
p
ansion vessel ca
p
acit
y
5 litres
C/ heatin
g
ex
p
ansion vessel ca
p
acit
y
8 to18 litres
Maximum su
pp
l
y
p
ressure 12 ba
r
Electrical Connection 220/240V
Outlet
p
ressure hot and cold wate
r
3·5 ba
r
CONNECTIONS
Air su
pp
l
y
p
i
p
e diamete
r
80 m
m
Flue
p
i
p
e diamete
r
80 m
m
Heatin
g
flow and return 22 m
m
Hot water outlet 15 m
m
Cold water su
pp
l
y
22 m
m
Gas
p
i
p
e connection ½" BSPM
Safet
y
Valve dischar
g
e connection 22 m
m
Condensate dischar
g
e drain connection 32 m
m
Underfloor heatin
g
flow connection ½" BSPF
DIMENSIONS AND WEIGHT
Hei
g
ht 1090 m
m
Width 530 mm
De
p
th 507 m
m
Wei
g
ht em
p
t
y
(
full
)
70 k
g
(
150k
g)
Protection Class IP44
ATMOS MULTI Mk 2 version 2004
Page 6
Dimensions of Multi
with wall mounting
frame