Warmhaus EWA 20, Installation Manual

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warmhaus.com
Figure 8 Combi bottled gas connection
1.2.4. Dimensions and Connections
1.2.5. Natural Gas and LPG Connection (Device Category I
2H
, II
2H3P
)
Our combi devices 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
combi connections. 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.
It should be controlled whether the gas distributed from the main line is as
envisaged (see the table on the combi device).
In case of having differences, an intervention should be made on the combi
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 should be
controlled regarding the impact on combi strength 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 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.
1.2.6. Flammable Gas Quality
The combi 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).
1.2.7. In Case of Using LPG Tank
LPG use is recommended for heat requirements over 24 kW. New LPG stock
tanks may contain settled gas residues (nitrogen) however, that 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.
1.2.8. In Case of Using Bottled Gas
• 300 mmSS pressurized hood should be used for LPG.
• 500 mmSS hood should not be used.
• 370 mmSS 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 used for distances longer than 125 cm.
• Hose connection ends should be tightened with clamp and no other tools
should be used.
• Gas installation rules with use of LPG tank and industrial tubes should
comply with local standards and to be performed by expert installation
teams and certified by the company undertaking the construction. In case
of failing to fulfil these conditions, combi shall not be commissioned by
Warmhaus Authorized Services.
Figure 7 Ewa combi dimensions and connections
Warmhaus Ewa
A: Central heating flow
B: Domestic hot water outlet
C: Gas inlet
D: Domestic hot water inlet
E: Central heating return
F: Filling valve
G: Manometer
H: Pressure relief valve outlet
I: Drain point
J: Condansate drain
K: 230V 50HZ AC
LPG LPG
Ball Valve
COLLECTOR
370 mmSS
2 kg
Hood
12 kg or
24 kg
LPG TUBE