CALEFFI FlowCal 121 Series Manuale utente

F nction

The FlowCal™ automatic flow balancin valve maintains a

constant fixed flow rate within varyin system differential

pressure ran es. Operation is fully automatic requirin no

manual adjustment. The 121 series utilize an exclusive,

interchan eable flow cartrid e, made of anti-scale, low

noise polymer for use in coolin and heatin systems. The

FlowCal 121 series automatic flow balancin valves are

available with inte ral shut-off ball valve and optional

factory-installed pressure and temperature test ports.

Drain valves are also available as an accessory for

installin in the blowdown port connection.

Prod ct range

121 Series Automatic flow balancin valve with polymer cartrid e, ball valve, with and without

Pressure and Temperature Test ports;

sizes 1/2" - 3/4" - 1" - 1 1/4"

Technical characteristics

Material: Body:

FlowCal

flow cartrid e:

Sprin :

Seals:

Ball:

Ball seat and stem seal:

Lever:

Pressure and temperature test port plu s:

Pressure and temperature test ports:

Drain port plu :

brass

anti-scale polymer

stainless steel

peroxide-cured EPDM

brass, chrome-plated

PTFE

zinc coated steel with vinyl rip

brass

body and cap- brass; core- nordel

b rass

Performance: Medium: water, lycol solutions

Max. percenta e of lycol: 50%

Max. workin pressure: 400 psi (400 WOG)

Workin temperature ran e: 32-212°F (0-100°C)

Connections: 1/2", 3/4", 1", 1-1/4" FNPT or Sweat with union x FNPT or Sweat

Pressure and temperature test ports connections: 1/4" FNPT

Blowdown port connection: 1/2" - 3/4": 1/4" FNPT

1" - 1 1/4": 1/2" FNPT

Flow rate: 27 flow rate settin s ran in from 0.5 - 21 GPM

Flow accuracy: ±10%

Differential Pressure Control Ran es: 2-14, 2-32, 4-34, 5-35, 3-32, 4-35

Identification: metal plate with ball chain statin ∆P ran e and fixed flow rate

CALEFFI

FlowCal™ Automatic flow balancing valve with polymer cartridge

121 Series

NA18055.02

www.caleffi.com

These items are designed for use in closed hydronic systems. Do not use in

plumbing applications. These items do not meet the low-lead plumbing standards of

U.S. and Canada.

SAFETY INSTRUCTION

This safety alert symbol will be used in this manual to draw attention to safety related

instructions. When used, the safety alert symbol means ATTENTION! BECOME ALERT!

YOUR SAFETY IS INVOLVED! FAILURE TO FOLLOW THESE INSTRUCTIONS MAY

RESULT INASAFETY HAZARD.

CAUTION: All work must be performed by qualied personnel trained in the

proper application, installation, and maintenance of systems in accordance

with all applicable codes and ordinances.

CAUTION: Over-tightening and breakage can occur with the use of Teon®

pipe joint compounds. Teon®provides lubricity so that care must be

exercised not to over-tighten joints. Failure to follow these instructions

could result in property damage and /or personal injury.

WARNING: System uids are under pressure or temperature can be

hazardous. Be sure the pressure has been reduced to zero and the

system temperature is below 100°F(38°C).Failure to followthese

instructions could result in property damage and/or personal injury.

WARNING: Clean the pipes of any debris, rust, incrustations, welding slag

and any other contaminants. For optimal operation, air in the system must

be removed.

Installation

Install the FlowCal TM automatic ow balancing valves on the circuit return pipe with ow

direction arrows indicating proper ow direction. It is important to allow easy access to the

FlowCal for inspection and maintenance.

The identication tag with the technical data must accompany the balancing valve after

installation. It is equipped with a special metal retaining ball chain especially useful when the

valve is enclosed with insulation.

Install a Y-strainer (series 120 on circuit supply pipe of the emitter coil to prevent clogging.

Strainers should be inspected and cleaned after start-up and twice per year thereafter.

FlowCal TM balancing valves may be installed in the pipe horizontally, vertically or at any angle.

For Sweat ttings: Union sweat tailpieces should be removed from the valve body for sweating to

the pipeline. Removethe

ow cartridg e (and adapter

for largersizes) and

FLOWCAL Version

pressure port plugs while

sweating the xed end into

RETURN

the pipeline. In addition,

wrap a wet cloth around the

EMITTER

ball valve portion of the

Y-Strainer Version

series 121 ow balancing

SUPPLY

valve (and the 120 Y-strainer)

when sweating in the integral

sweat body connection.

WARNING: This product can expose you to chemicals including lead, which is

known to the State of California to cause cancer and birth defects or other

reproductive harm. For more information go to www.P65Warnings.ca.gov.

FlowCal cartridge assembly and disassembly

The internal flow cartrid e can be removed easily from the valve body for inspection, cleanin or

replacement by unscrewin the cap as shown here.

Flow verification

The flow rate can not be field adjusted. To verify flow rate with pressure and temperature a es

or meter with sensor probes, use the factory-installed pressure and temperature test ports (or

install separately sourced PT test ports, also available from Caleffi). The PT test port accepts

either a 1/16" or 1/8" OD probe. Dirt or debris may be the cause for readin s outside the specified

flow rate.

Body

Cartridge

Retainer ring

Cap

1/2” - 3/4” from 0.5 to 10 gpm

Body

Cartridge

Retainer ring

Cap

Body

Adapter

Spring

Cartridge

Cap

1” - 1 1/4” from 2.5 to 21 gpm

from 2.5 to 10 gpm

from 11 to 21 gpm

CAUTION: If the FlowCalTM valve is not installed, commissioned

and maintained properly, accordin to the instructions contained in

this manual, it may not operate correctly and may endan er the user.

CAUTION: Make sure that all the connectin pipework is water ti ht.

Caleffi North America, Inc.

3883 West Milwaukee Road

Milwaukee, WI 53208

T: 414.238.2360 F: 414.238.2366

Press re and temperat re testing

The FlowCalTM body is fitted with

connections for the pressure and

temperature ports, which is useful when

checkin operation in the workin ran e.

In addition, drain valve (538202 FD

-1/4" NPT; 538402 FD-1/2" NPT) can

be connected for blowdown operations.

∆p (kPa)

7-23-18

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