Brochure
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45
DISTRIBUTION MANIFOLDS
L@MHENKCBNLONMDMSR
1 Supply manifold (complete with manually adjustable
balancing valves only for 663 series).
2 Return manifold complete with shut-off valves that can
be used with thermoelectric actuators.
3 Shut-off ball valves
4 End fi ttings consisting of a 3-way end fi tting, automatic
air vent valve and drain valve.
5 Pair of mounting brackets for use with series 659 boxes
or direct wall installation.
RDQHDRRTOOKXL@MHENKC
Supply manifold has manual balancing
valves for regulating fl ow delivered
to system circuits. The balancing is
accomplished by turning an hex wrench
into the balancing valve in each supply
outlet. The chart below shows the number
of turns for reaching the desired value of
fl ow and Δp.
RDQHDRQDSTQML@MHENKC
The return manifold is equipped with
manual shut-off valves (1) which are
used to shut off the fl ow to individual
circuits.
They can also be used with a thermo-
electric actuator which, when used
with an ambient thermostat, maintains
the ambient temperature at the set
limits when thermal load varies. The
stem (2) is made of polished stainless
steel to minimize friction and prevent
harmful encrustation from forming.
The control device upper part features
a double EPDM O-ring seal (3) — (4)
on the sliding stem.
The valve (5) is made of EPDM and
is molded to optimize the hydronic
characteristics of the valve and reduce
noise to a minimum as the fl uid passes
through and as it gradually opens
and closes when operating with a
thermo-electric actuator.
1
3
4
2
5
CITRSLDMS
STQMR "U
1.5 0.25
2 0.55
2.5 1.0
3 1.7
3.5 2.5
4 3.0
Totally Open 3.2
Cv = fl ow in gaI/min for a pressure loss of 1 psi
CAL EFFI
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CAL EFFI
21345
CAL EFFI
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For fi eld assembly to a Caleffi radiant manifold assembly. Manifold pump
station.
Grundfos UPS 15—58 three-speed pump or Alpha 25-55U.
1" NPT male adapters included to connect to manifold.
¾" NPT male riser connections.
Includes built-in hydraulic separator.
Code Description Pk Lbs USD
NA17256HE Thermostatic fi xed point, Alpha 25-55U 1 4.1 1,390.00
NA17256 Thermostatic fi xed point, UPS 15-58 1 4.1 1,090.00
Thermostatic pump
station
tech. broch. 01170
%(7$#/.(-33$,/$1 341$,(7(-&23 3(.-