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2.2.4. Dimensions and Connections
2.2.5. Natural Gas and LPG Connection (Device
Category I
2H
, II
2H3P
)
Our products are manufactured to be operated with
methane gas (G20) and L.P.G. Gas supply pipes should
be equal to or higher than 3/4”G. Prior to making the gas
connection, a studious internal cleaning should be made
to all fuel supply installation pipe furnhishings as possible
wastes may distort smooth operation and reliability of
the combi boiler. It should be controlled whether the gas
distributed from the main line is as envisaged (see the
table on the combi boiler device).
In case of having differences, an intervention should be
made on the combi boiler and converted to other gas
type (consult our authorized services in case of gas
change). Also, in case of being inadequate, the network
dynamic pressure (methane or LPG) to be used for
supplying the combi boiler should be controlled regarding
the impact on combi boiler power and difficulties
possible for the user. Ensure the correctness of gas valve
connection. Flammable gas supply pipe should be able to
supply correct adequate gas amount to the boiler when
the combi boiler is at full power and be projected and
sized according to local gas company specification and
instructions in order to guarantee the device efficiency.
Connection system should comply with legal regulations.
2.2.6. Flammable Gas Quality
The combi boiler is designed to be used with pure fuel
not containing any foreign substances; therefore, required
filter systems must be available in the gas supply line (for
ensuring purification of the fuel).
2.2.7. In Case of Using LPG Tank
For heat requirements over 24 kW, LPG tank usage is
recommended instead of LPG bottle. New LPG stock
tanks may contain settled gas residues (nitrogen) and this
pauperises the mixture assigned to that device and cause
abnormal operations.
- Various alloy layers may be formed during stocking LPG
gas in tanks depending on mixture compositions. That
causes a change in heating power of mixture assigned to
the device and changes efficiency of the device.
2.2.8. In Case of Using Bottled Gas
• 300 mmH
2
O pressurized hood should be used for LPG.
• 500 mmH
2
O hood should not be used.
• 370 mmH
2
O pressurized hood should be used for
Propane.
• Do not place tubes at cold places having risk of snow
for preventing frost during winter months.
• Do not place tubes in hot places containing ovens,
fireplaces for preventing dangers!
• Do not make connection with single tube and use LPG
collector set for double, triple uses.
• The distance between the collector and tube should be
maximum 125 cm.
• Copper pipe installation should not be used for
distances longer than 125 cm.
Warmhaus Minerwa
01) 230V AC Main Supply
02) Filling Valve
03) Pressure Relief Valve Outlet
04) Gas Inlet
05) Central Heating Flow (CH)
06) Domestic Hot Water Outlet (DHW)
07) Domestic Hot Water Inlet (DHW)
08) Central Heating Return (CH)
09) Drain Point
10) Condansate Drain
11) Mounting Bracket
595
260
30
55
91
65
50 52
65
90
80
35
67
42,5
1
2
4
9
10
3
8
7
6
5
DHW
G1/2"
379
201
109
CH
G3/4"
GAS
G3/4"
CH
G3/4"
DHW
G1/2"
Figure 7
Minerwa combi boiler dimensions and
connections
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