Fulton Vertical Coil (FT-C_S) Thermal Fluid (hot oil) Heater - Manual (Page 23)

Questions? Call (315) 298-5121, or visit us online at www.fulton.com
SECTION 2
FTCS-IOM-2013-1114
INSTALLATION
2-17
Pump
Pipe Must Be
Diameter of
Pump Intake
From Outlet of Deaerator
First
Fitting
Pipe Support Must Be
Provided (Not To Be
Welded On Both Ends)
6 - 10 Pipe Diameters
6. If an isolating valve is completely closed, the pressure
in the system will rise to the deadhead pressure of the
pump. Suitably sized pipe will enable the system to
withstand the total head generated by the circulating
pump, should this occur. In applications where it is
desirable to design to pressures lower than 100 psig,
an alternative safeguard is to install appropriately sized
safety valves.
7. Where secondary circulating pumps are installed,
ensure the system is suitable for the aggregate head,
against a closed valve, of both pumps.
8. During construction of the installation, ensure that no
dirt, water, or residue from welding is left in the system.
9. Consider expansion joints or pipe loops to
accommodate thermal expansion. Design should be
per latest edition of ASHRAE Systems and Equipment
Handbook to prevent detrimental forces and stresses at
connected equipment. Thermal expansion should be
calculated using the maximum possible utilization fl uid
temperature, regardless of whether the pipe considered
is in the feed or return circuit. Steel pipe will grow
axially and can be expected to expand approximately
1” over 100ft @ 100°F temperature rise (1mm per meter
over 100 C rise).
10. Provide properly designed supports and anchors for all
piping where necessary to prevent undue stress from
being imparted on equipment such as pumps, valves
and the heater. Care should be taken as end reactions
transmitted to rotating equipment, such as pumps,
may deform the equipment. Therefore equipment
manufacturers’ recommendations on allowable forces
and movements should be followed. See Figure 9.
11. Ensure all pipe joints are of either welded or fl anged
construction. Screwed joints must be avoided where
possible. In no instance should screwed joints be used
in the fl ow circuit. All fl anges should be welded to the
pipe and not screwed. Depending on the size, fl anges
should be 150# or 300# raised face fl anges, SA105.
12. Ensure heaters that are skid mounted with pumps and
tanks are equipped with a y-strainer, a fl ex connector
and a valve in the inlet run between the pump and the
combination tank. Piping between the discharge of
the pump and the inlet of the heater will include a fl ex
connector and a valve.
13. If screwed connections have to be made, e.g., to items
of control equipment, use a thread sealant suitable for
use with fl uids at elevated temperature. Tefl on tape,
standard pipe sealant, or hemp and paste are not
acceptable.
14. Cut screw threads carefully and accurately. If possible,
FIGURE 9 - TYPICAL PUMP PIPING