Intertek FT Series - Plumbing Guidelines; External Plumbing and Water Connection Guidelines; Applicable Backflow Preventer; Diaphragm Type Expansion Tank

The FT Series Floor Standing, Heating Only Boiler
Page 43
The built-in LLH allows direct piping of system
supply and return connections to their respective
connections on top right side of the boiler. This
greatly simplies near boiler piping in a replacement
application. Do NOT use primary/secondary piping!
CH pipe size : 1 1/2˝
CAUTION
For guidelines in the use of Glycol Products. Please
refer to Section 8.4 on page 81
CAUTION
CAUTION
Scalding Risk: Manufacturer
strongly recommends the
installation of an anti-scald
mixing valve at domestic hot
water outlet (indirect tank
location) to reduce potential
for scalding.
Check with local codes.
__________________________________________
- Ensure pipe material meets local codes and industry
standards.
- The pipe end must be clean and free of debris.
- Do not apply torch heat within 12˝ of the top
connections of the unit.
- The Boiler supply and return connections are 1-1/2”
NPT. System piping should be sized based on your
design load and ow requirements. Refer to sections
4.16.4 through 4.16.8 for details.
- Isolation valves (shuto󰀨 valve) will be used.
- All piping should be insulated.
4.16.2 Applicable Backow Preventer
- Apply a backow preventer valve in the DHW
supply inlet (water Inlet) to the unit as required by
local codes.
4.16.3 Diaphragm type Expansion tank and
external LWCO mounting.
- The air in a diaphragm-type expansion tank is
separated from the water by a exible rubber
membrane. When the tank is installed in and
connected to the piping of the system, water enters
the other side of the tank chamber and presses down
on the diaphragm.
- You should always install an ‘Automatic Air Vent on
the top of the air separator to remove residual air
from the system.
- Install the supplied brass adaptor, automatic air
vent and relief valve on the top front right piping
connection.
- If an external LWCO is required/ desired, the
horizontal body of the brass adaptor ttings has a
3/4” connection for a remote LWCO.
4.16 Plumbing Guidelines
4.16.1 External Plumbing and Water
Connection Guidelines