Installation of Valve Cluster Assemblies
HBC(X), PHBC(X), RHBC(X), CHBC(X):
Installation, Operation, and Maintenance Instructions
9
I
NSTALLATION OF
V
ALVE
C
LUSTER
A
SSEMBLIES
Horizontal hydronic fan coil units may use either a two-way (Figure 3) or three-
way (Figure 4) motorized valve assembly. The following procedures describe
each installation.
P
ROCEDURE
1: T
WO
-W
AY
M
OTORIZED
V
ALVE
A
SSEMBLIES
1.
The two-way motorized valve assembly should be attached to the supply
header which is the connection nearest the air outlet flange on the unit.
2.
Prior to soldering the joints, operate all the hand valves to ensure that the
handles will fully open and close without interference to other valves,
ceiling, wall, plenum or other accessories.
3.
All valves will operate at any angle with the exception of the motorized
valve, which must never be installed with the power head below horizontal.
The actuator box requires a 3/4-inch clearance for removal.
FIGURE 3.
Two-Way Motorized Valve Assembly
P
ROCEDURE
2: T
HREE
-W
AY
M
OTORIZED
V
ALVE
A
SSEMBLY
1.
The three-way valve assemblies will mount to the coil in only one position.
2.
Prior to soldering the joints, operate all the hand valves to ensure that the
handles will fully open and close without interference to other valves,
ceiling, wall, plenum or other accessories.
3.
All valves will operate at any angle with the exception of the motorized
valve, which must never be installed with the power head below horizontal.
The actuator box requires a 3/4-inch clearance for removal.
FIGURE 4.
Three-Way Motorized Valve Assembly
