PIPING
6
HBC(X), PHBC(X), RHBC(X), CHBC(X)
:
Installation, Operation, and Maintenance Instructions
PIPING
PIPING
PRECAUTIONS
1.
Flush all field piping prior to connection to remove all debris.
2.
Use wet cotton rags to cool valve bodies when soldering.
3.
Open all valves (mid-way for hand valves, manually open on motorized
valves) prior to soldering.
4.
When soldering to bronze or brass, heat the piping while in the socket/cup
and begin introducing the solder when the flux boils rapidly. Avoid direct
flame into the solder joint.
5.
Heat can only be applied to the cup of the valve body for a minimal time
before damage occurs (even with the use of wet rags).
6.
Avoid rapid quenching of solder joints as this will produce joints of inferior
quality
7.
The valve package will not support the weight of the connecting pipes. All
pipes connected to the units must be completely supported prior to
connection to the unit.
8.
Provisions must be made for expansion and contraction of piping systems.
All horizontal and vertical risers, including runouts, must be able to
withstand significant movement with temperature changes. Failure to do so
will result in damage and failure of piping, fittings and valves throughout
the building.
9.
Never insulate the heads or motorized portion of control valves. Damage can
occur in the form of excessive heat build up and interference to the
operation and moving parts will result.
10.
All piping made in the field should be installed with consideration of
additional space for any electrical routing that may be required.
11.
Connect all piping per accepted industry standards and observe all
regulations governing installation of piping systems.
CAUTION:
Hydronic systems are not designed to hold pressurized air and should
only be tested with water. Pressurizing system with air could damage
equipment.
12.
When all connections are complete, pressure test system. Repair any solder
joint leaks and gently tighten any leaking valve packing nuts and piping
accessories, as required.
PIPING
INSTALLATION
These units employ a hydronic coil designed for use with either hot or chilled
water.
•
All piping must be adequately sized to meet the design water flow
requirements as specified for the specific installation. Piping must be
installed in accordance with all applicable codes.
•
The piping connections on the equipment are not necessarily indicative of
the proper supply and return line sizes. To minimize restrictions, piping
design should be kept as simple as possible.
NOTE:
Refer to Figure 2 for Piping Connections.
CAUTIONS:
•
When connecting piping to fan coil units, do not bend or reposition the
coil header tubing for alignment purposes. This could cause a tubing
fracture resulting in a water leak when pressure is applied to the
system.
