086U6175 Rev. 10
5
EN – Installation/Maintenance
1.
Installation
C
Piping installation must be carried out in accordance with
applicable local rules and regulations. The hot water tank
must be equipped with an approved safety valve (supp-
lied).
C
The tank must be connected to an expansion tank and safety
valve in such a way that the connection cannot be shut off.
C
The highest permitted temperature in the MBH tanks is 100°C,
both on the secondary and primary sides.
C
As the water temperature in Diplomat Optimum G2/G3 and
Diplomat Duo Optimum G2/G3 becomes extremely hot, a
mixer valve must be installed between the cold water and hot
water pipes to ensure a lower domestic hot water tempera-
ture.
C
The highest permitted temperature in the MBH tanks is 100°C,
both on the secondary and primary sides.
C
It is important that the heating system is bled after installa-
tion. Bleed filters must be installed where necessary.
C
Ensure that the pipe installation is carried out in accordance
with the dimensions and connection diagrams.
1.1
Product description
Thermia MBH are modern and efficient storage tanks with a very
wide range of uses for hot water production.
Hot water heaters Thermia MBH are specially designed to comple-
ment Thermia’s heat pumps.
(G2 Design, G3 Design and Inverter Design)
The hot water tank is used in installations where the hot water is
produced by another heat source – any energy forms can therefore
be used with it.
The hot water tank is designed according to Pressure
E
quipment
Directive
97/23/EC article 3.3
1.2
Connections and dimensions
For Thermia MBH 200, see figure 1.
For Thermia MBH 300 / MBH H 200, see figure 2.
Symbol explanation
1. Return pipe to heat pump Ø 22 mm
2. Hot water Ø 22 mm
3. Cold water Ø 22 mm
4. Inlet from heat source Ø 22 mm
5. Lead-ins
6. Venting,
Thermia water heaters
MBH
MBH H
200
300
200
Volume Sec/Prim, 1
180/7.5
286/10
180/7.5
Calc. pressure Sec/prim, Mpa
1.0/0.3
1.0/0.3
1.0/0.3
Test pressure Sec/prim, Mpa
1.43/0.43
1.43/0.43
1.43/0.43
Weight empty, kg
95
115
110
Weight full, kg
285
410
300
Height, H*, mm
1538
1845
1845
*) The height applies with the feet set at the lowest level For MBH G2
the height applies without the design top installed
1.3
Installation
To remove the front cover carry out the following:
1. Detach the front cover by twisting the catch 90° anti-
clockwise. At the same time hold the front cover with one
hand.
2. Tilt the front cover outwards.
3. Lift the front cover upwards to remove it from the hot
water heater.
1.3.1 Positioning
•
Position Thermia MBH on a floor that can bear their
weight.
•
The room must be equipped with a floor drain.
•
Thermia MBH are intended for upright installation.
•
For minimum ceiling height for elevating the heater, see
figure 6.
•
The hot water tank is positioned and then the pipes are
connected. If the tank is to be installed together with a
heat pump it must be positioned beside the heat pump
and connected with a flexible connection.
1.4
Piping installation
For general connection diagram for Diplomat Duo Optimum and
MBH, see figure 3.
For general connection diagram for Diplomat Duo Optimum G2/G3
and MBH G2/G3 (incl. temperature/pressure valve),
see UK Appendix.
For general connection diagram for Diplomat Optimum and MBH,
see figure 5.
Symbol explanation
1. Heat pump
10. Supply line
11. Return line
12. Cold water
13. Hot-water
18. Water heater MBH
19. Water heater MBH H 200
50. Outdoor sensor
80. Shut-off valve
83. Non-return valve
85. Air bleeding valve
86. Safety valve expansion heating system 1,5 bar
87. Safety valve cold water 9 bar (included in delivery)
89. Vacuum valve
91. Strainer (included in delivery)
94. Filler cock
96. Flexible hose (included in delivery)
100. Safety valve 1,5 bar
111. Bleed and expansion tank
113. Expansion heating system
118. Safety valve 2,5 bar (hot-water, operating)