Melbury HE, C 530 - 3000
6
We reserve the right to make changes to dimensions and construction
edition 12.2020
Hamworthy Heating Limited – Dorset BH17 ONF
4. Technical data
4.1. Main data / operating conditions
Max. operating pressure (standard model)
6,0 bar g
Test pressure
(other pressures on request)
9,0 bar g
Boiler supply and return pipe flanges
PN 6
Max. operating temperature (safety cut-out)
110°C
Min. operating temperature
with fuel oil
60 °C
with natural gas
70 °C
with propane
70 °C
Min. return temperature:
Melbury HE
with fuel oil
50 °C
with natural gas
60 °C
with propane
60 °C
Melbury HE
with fuel oil
35 °C
with natural gas
45 °C
with propane
45 °C
Recuperator C
no limits
Min. flue gas temperature
with fuel oil
S-content 50 ppm
100 °C
500 ppm
110 °C
0.1%
115 °C
0.2%
120 °C
0.5%
125 °C
with natural gas
S-content 10 mg/nm3
95 °C
150 mg/nm3
110 °C
Max. CO
2
-content
with fuel oil
15.5%
(dry flue gas)
with natural gas
11.7%
with propane
13.7%
4.2. Minimum operating pressure
Melbury HE
530 580 630 700 800 895 1150 1300 1650 1900 2500 3000
bar g
0.55 0.55 0.65 0.50 0.70 0.75 0.85 1.10 1.25 1.30 1.60 1.70
4.3. Water quality
The following rules apply once the boiler is put into service and remain valid until the end of life of the product.
Preparing the water system before putting the boiler into service
For any installation (new or renovation), the water system pipes must be thoroughly cleaned. The purpose of this
initial cleaning is to eliminate germs and residue that can cause deposits to form.
In
new installations
in particular, residue from grease, oxidized metal, and even copper microdeposits must be
removed.
In
renovated installations
, cleaning should focus on removing sludge and the products of corrosion formed
when the unit was last in operation.
There are two types of methods for cleaning and removing sludge: a high intensity approach that takes a few
hours and a slower, more gradual approach that takes several weeks. This first type of cleaning must be done
before connecting the new boiler
, and with the second type, a filter should be installed on the back of the boiler
to capture loosened deposits.
The cleaning performed prior to installation improves performance, reduces energy consumption, and
resists scaling and corrosion on the unit. A professional (water treatment) should carry out the cleaning.
Protecting the unit against scaling
Water naturally contains dissolved calcium ions and carbonates that cause scaling (calcium carbonate) to form.
To prevent excessive deposits, take precautions with regard to the
water used to fill the unit: TH < 10°f
Water must be added during the life of the boiler. The new water adds scaling to the water system.
The amount
of fill water plus the amount of make-up water added during the life of the unit should not be more than
three times the water capacity of the heating system.
Also, the hardness of the make-up water must be
controlled.
Make-up water: TH < 5 °f
Содержание Melbury HE 530
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