FULTON VMP Series, Инструкция по установке, эксплуатации и обслуживанию

Страница: 26 / 106

VMP-IOMM-2018-2
Fulton Ltd
Page 18
INSTALLATION - 2
2.7 WATER SUPPLY
CAUTION
WATER SOFTENER and CHEMICAL TREATMENT
The chemicals required to operate the water softeners and chemical treatment plants
CAN BE SUPPLIED by Fulton. It is the responsibility of the operator to ensure adequate supplies
of chemical are available at all times (including commissioning). Costly repairs could be required
should the plant operate without chemicals or the wrong dosage of chemicals.
!
The Fulton Warranty does not cover damage or failure that can be attributed to excessive
corrosion, scale or fouling.
The quality of the water used in the boiler will affect the life and performance of the boiler.
Feedwater contains solids and dissolved gases, these may promote encrustations of scale;
foaming, priming, surging; corrosion and pitting; or caustic embrittlement. To prevent this
happening it is strongly recommended that a reputable water treatment concern is consulted prior
to commissioning the boiler.
Note: See
Appendix A - TI-139-Recommended Water Conditions.
Connect the feedwater pump discharge to the check valve inlet with 25 mm bore pipe (this may
be reduced to 15 mm, where the discharge pipework is shorter than 4 m in total. The pump
suction pipework must remain at 25 mm minimum diameter and be as short as possible). Install
the stop valve supplied between the boiler and the check valve. The check valve must be
positioned so that it is below the internal water level of the boiler, and should be installed at least
1 m after the feedwater pump. The reason for this placement position is that the check valve is
designed to have water on both sides to enable it to function correctly.
It is essential to protect the feedwater pump from damage by foreign matter, a strainer should
therefore be fitted in the pump suction pipework.
Care should be taken to ensure the pipework is properly aligned and not placing any strain upon
the feedwater pump.
Note:
The boiler feedwater pump may contain an inhibitor and this should be flushed from the pump prior to fitting
the pump to the boiler.
Failure to do so may result in water bounce or foaming due to the inhibitor forming a seal in the boiler.
Note:
If the boiler is to be operated with little or no condensate return, consideration should be given to pre-heating
the feedwater. If in doubt consult Fulton Ltd.