Min. 25 mm
Min. 25 mm
bar
2
1
O
3
4
Min. 300 mm
INSTALLATION AREA
- Make sure that all air vents are unobstructed.
- Do not store any flammable materials in this room.
- Do not store any corrosive materials, paint, solvents, salts, chlorine products or any other
detergent products in the vicinity of this appliance.
- If you smell gas, do not operate electrical switches, close the gas valve on the meter,
ventilate the rooms and contact your installer.
ACCESSIBILITY
The appliance must be placed in such a way that it is always easily accessible. Furthermore,
the unit must have the following minimum clearance around it.
DIMENSIONS
A
mm
B
mm
C
mm
D
mm
E
mm
F
mm
G
mm
H
mm
I
mm
J
mm
K
mm
L
mm
M
mm
N
mm
O
mm
HM 25 / 35 TC
1720
600
500
80
125
140
1700
670
110
100
200
960
—
170
230
HM 70 / 85 TC
2145
690
580
100
150
160
2095
725
125
105
270
1210
200
235
240
HYDRAULIC CONNECTIONS
HeatMaster® 25 / 35 TC
HeatMaster® 70 / 85 TC
Heating connection [F]
Ø
1"
1"1/2
DHW connection [M]
Ø
1"
1"
Gas supply [M]
Ø
3/4"
3/4"
bar
2
1
O
3
4
A
B
C
D
E
G
H
F
O
N
L
K
J
I
M
1736
3 x 65
730
180
690
“Easy Fit” kit for
HeatMaster® 25 / 35 TC only
INSTALLATION
FLUE CONNECTION
The connection must comply with the local standards in force, taking into account local energy suppliers’ instructions, fire regulations and pollution
regulations.
The maximum flue pressure drop is 130 Pascal for the HeatMaster® 25 / 35 TC and 150 Pascal for the HeatMaster® 70 / 85 TC.
This value can be calculated using the table below:
EXAMPLE OF CALCULATION:
C13x pipe with: a monitoring s 2 90° pipe bends + 2 metres of horizontal pipe + 2 45° pipe bends + 4 metres of vertical and sloped pipe + one
vertical terminal unit.
The resistance of this system is as follows: 2.5 + (2 x 6.0) + (2 x 5.0) + (2 x 4.0) + (4 x 5.0) + 20 = 72.5 Pa.
As this value is lower than the maximum authorised resistance, this installation is therefore compliant.
EN • 10
664Y5300 • A
E
N
FR
R
U
P
L
DE
IT
ES
N
L
