Table of Contents
Advertisement
Arctic Installation and Operation Manual
For some old systems, there is a reluctance to
clean the piping because of possible leaks
occurring in badly corroded lines. Should the
customer refuse cleaning, it is necessary to
install filtration equipment. Install either a
fibrous filter or a centrifugal filter in the boiler
return piping. This will collect and remove
sediment from the system. A booster pump
may be required to overcome the additional
pressure drop introduced in the line by the
filter. When filling the system, provide
chemical treatment as outlined in Section 3.8.
Failure to properly clean the system or to
install mechanical sediment removal
equipment can result in tube blockage and
severe corrosion plus damage to pumps,
controls, and air removal devices.
Inspect, repair as necessary, or replace system
air control devices.
Install gauge glasses on air expansion tanks
and install a tank fitting in the system
connection to the tank.
Install a strainer in the boiler return piping.
3.7
Draining and refilling the boiler &
system
If the system is drained and then refilled,
chemical treatment is essential to treat the raw
water. Use only clean, softened water.
3.7.1 Filling The System
WARNING
Use only clean, softened, and treated
water.
Chemical treatment of the raw
water is essential when filling or refilling
the system see section 3.8.
Thermal Solutions, 1175 Manheim Pike, Lancaster, PA 17601 Web:
Phone: 717-239-7642 Fax: 877-501-5212 Email:
25
3.7.2 Hydrostatic Test Of Boilers And
System
After completing the boiler and burner
installation, the boiler connections, fittings,
attachments and adjacent piping must be
inspected for leaks by filling the unit with
water. The pressure should be gradually
increased to a pressure just below the setting
of boiler safety relief valve(s).
Remove the boiler tube access panels (see
dimensional drawing in the boiler manual).
Inspect the tube to header joints to be certain
that all tube fittings are sealed. This is
necessary because, although the boiler is
hydrostatically tested at the factory, minor
leaks in fittings and at attachments can
develop from shipping vibration or from
installation procedures. Replace tube access
panels before proceeding to start boiler.
3.8
Boiler Water Treatment
3.8.1 Purpose of water treatment
Water treatment is required for satisfactory
operation of the boiler. It must be devised to
prevent depositing of scale and corrosion
from acids, oxygen and other such harmful
elements that may be in the water supply. A
qualified water treatment chemist should be
consulted and the water systematically treated.
"Hot water systems must operate with a pH
above 8.5. A system that has a pH below 8.5
will usually develop the following problems:
Gas formation (air trouble)
Pump seal and gland problems
Air vents sticking and leaking
1.
Frequent relief valve operating
2.
Piping leaks at joints
3.
4.
5.
www.thermalsolutions.com
sales@thermalsolutions.com
Form: 2435
Revision: 8
Date: 9-19-2016
Advertisement
Table of Contents
