Bell & Gossett V58045B User Manual

INSTRUCTION MANUAL

V58045B

1

/2 1SEZISTPN& TAEWS "1 OT "

1

/4" TO 21/2" SWEAT & NPT SIZES

Circuit Setter Plus®Model MC

INSTALLER: PLEASE LEAVE THIS MANUAL FOR THE OWNER’S USE.

NOTE: Bell & Gossett does not

recommend Circuit Setter Plus

®

components to be used for potable water.

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 IN A SAFETY HAZARD.

OPERATIONAL LIMITS

WORKING PRESSURE & TEMPERATURE LIMITS

(SOLDER TYPE LIMITS FOR ANSI STD. B16.18)

Maximum Maximum

Type

Solder

95-5 300 (2069) 200 (93) 300 (2069) 175 (79)
TIN- 250 (1724) 225 (107) 250 (1724) 200 (93)

ANTIMONY 200 (1379) 250 (121) 175 (1207) 250 (121)

Limitations Limitations

1

/2" - 1"1

Pressure Temp Pressure Temp

psi (kPa) °F (°C) psi (kPa) °F (°C)

1

/4" - 21/2"

DESCRIPTION

Circuit Setter Balance Valves are precision engineered valves
which function as precise system balance valves and highly
accurate variable orifice flow meters. Circuit Setter Balance
Valves are equipped with an easy to operate memory stop
feature. NPT and Sweat models are also equipped with a
drain port feature.

WARNING: Damage to the Circuit Setter or failure

of solder sealing joints may occur if these opera­tional limits are exceeded. This can result in water leak­age. Failure to follow this instruction can cause serious
personal injury and/or property damage.

INSTALLATION INSTRUCTIONS

NPT and sweat style Circ uit Setter Ba lance Valv es are
equipped w
is to be used to drain a riser on the downstream side of a ter­minal unit, it should be situated on the terminal unit side of
the riser when installing the Circuit Setter.

FOR INSTALLING SWEAT CONNECTION:

a) Clean tube ends and valve connections thoroughly per

good piping practices with a fine grade emery cloth or fine
grit sandpaper.

b) For soldering, use 95-5 (Tin-Antimony) s

grade of flux.

c) Use a torch with a sharp pointed flame.

d) When sweating the joints, first adjusting the valve in the full

open position, then wrap the valve with a cool wet rag and
then direct the flame with care to avoid subjecting the valve
to excessive heat. Allow the valve to cool before touching
or operating.

ith a 1/4" NPT plugged drain port. If the drain port

older and a good

e) Check the soldered connection for leaks.

FOR INSTALLING NPT CONNECTIONS:

Apply pipe compound conservatively to male connection
fittings only.

After installation check all joints for leakage and retighten
where necessary.

OPERATION INSTRUCTIONS

HOW TO USE BELL & GOSSETT CIRCUIT SETTER
BALANCE VALVES FOR PRE-SET FLOW BALANCING

All Circuit Setter Balance Valves within a common zone, cir­cuit, or system, with a common pump, are brought into
balance with each other by establishing a common BALANCE
GOVERNING HEAD LOSS as noted.

1. Identify the zone within a given circuit or circuit within a
given system with the highest head loss.

2. Establish the value of the head loss in feet of water.

3. Establish the corresponding required GPM.

4. Select the appropriate size Circuit Setter Balance Valve
(normally line size) for the required GPM.

5. Using Side #1 of the V91483 Circuit Setter Balance Valve
Calculator, set the degree of closure hairline in the red sec­tion of the Calculator over the 0° setting for the appropri­ate size Circuit Setter and read the head loss opposite
the required GPM. The setting for this Circuit Setter will
remain 0°.

6. Add the head loss in Step “5” to the head loss in Step “2”
to establish the Balancing Governing Head Loss for the
zone or circuit.

7. Subtract the required head loss for each zone circuit from
the Balance Governing Head Loss in Step “6” to establish
the head loss difference for each zone or circuit which is to
be brought into balance with Step “6”.

8. The head loss difference in Step “7” and the required GPM
in Step “3” are lined up in the white section of Side #1 of
the Calculator and the degree of closure for the specific
Circuit Setter Balance Valve is shown under the degree of
closure hairline in the red section of the Calculator for the
appropriate size Circuit Setter.

9. Adjust the Circuit Setter by turning the red knob by hand
on sizes

1

/2" thru 1", or by placing a wrench on the wrench

flats provided on sizes 1

1

/4" thru 21/2" to the set position

determined by the preceding procedure.

NOTES:

• Head loss in Steps “6” and “2” are a fixed head require­ment the zone, circuit, or system pump, as required, must
overcome.

• Refer to the G95872 pre-wired tag packaged with the
Circuit Setter Balance Valve and fill in the appropriate
information. Attach the tag to the Circuit Setter for future
reference.

HOW TO USE BELL & GOSSETT CIRCUIT SETTERS
TO PROPORTIONAL BALANCE A SYSTEM

1. Open fully all Circuit Setters on a single pump system.

2. If more than one branch circuit is used, start the balance
procedure by reading all of the flows to the units in a
branch. Each unit (coil) should have its own Circuit Setter
for flow balancing. Using Bell & Gossett RP-250B readout
probes, sequentially attach a Bell & Gossett differential
pressure readout kit to the readout valves on each Circuit
Setter Balance Valve.

3. Using Side-2 of the Bell & Gossett Circuit Setter Balance
Valve Calculator, with the top hairline set on zero for the
size Circuit Setter being read, read the flow corresponding
to the pressure drop read with the readout kit.

2

WARNING: Use of improper procedures to sweat

valve model with union connection into system can
damage valve. Before installing sweat union connection to
valve, remove the union nut and O-ring from the valve
body, then union tailpiece with union nut must be sweated
(soldered) into place. Make sure the O-ring is reinstalled.
Failure to follow this instruction could result in property
damage and/or moderate personal injury.

CAUTION: The use of PTFE impregnated pipe

compound and PTFE tape on pipe threads provides
lubricity. Care should be taken to prevent overtightening
which may damage the valve body. Failure to follow these
instructions can result in moderate personal injury and/or
property damage.

CAUTION: Heat associated with the use of silver

solder may damage a Circuit Setter valve and void
product warranty. Do not use silver solder. Failure to follow
this instruction could result in property damage and/or
moderate personal injury.

CAUTION: Excessive use of solder or flux may result

in damage to the shutoff valve seat and ball. Do not
use excessive solder or flux. Failure to follow this instruction
could result in moderate personal injury and/or property
damage.

WARNING: It is possible, depending on the age or

condition of the stem seal, for some liquid to escape
during Circuit Setter adjustment. Do not have eyes or face
on a level with the sides of the Circuit Setter. Failure to fol­low this warning could result in serious personal injury.

WARNING: Hot water leakage can occur from read-

out valve during probe insertion and during hookup of
readout kit. Follow the instruction manuals supplied with
readout probes and readout kit for safe use. Failure to fol­low this instruction could result in serious personal injury
and/or property damage.

4. Calculate the ratio of the actual flow to the design flow for
each unit in the branch. This is the proportional flow rate.
(Actual flow divide by design flow.)

5. Select the Circuit Setter with the lowest proportional flow
rate. This Circuit Setter is left in the full open position.
Every other Circuit Setter in the branch is then reset to the
same proportional flow rate.

6. If there are additional branches, repeat the steps in 3, 4
and 5 above for each branch.

7. After all branches have been proportionately balanced,
measure the full open flows on the Circuit Setters installed
on the risers. Calculate the proportional ratio of each riser
Circuit Setter and select the one with the lowest propor­tional ratio. This Circuit Setter is left fully open and the
other riser Circuit Setters are adjusted to this same ratio as
described in (5) above.

8. Adjust pump flow so that circuits are receiving their design
flow. This can be accomplished by adjusting a Circuit
Setter Balance Valve installed on the pump discharge or by
changing the pump impeller size.

HOW TO USE BELL & GOSSETT CIRCUIT SETTER
BALANCE VALVES AS FLOW METERS

1. Ene rgize the zone , circuit and/ or system pump (s) as
applicable.

2. Using Bell & Gossett Model RP-250B Readout Probes,
sequentially attach a Bell & Gossett differential pressure
readout kit to the readout valves on each Circuit Setter
Balance Valve.

3. Read the differential pressure across the orifice of the
Circuit Setter Balance Valve.

4. Us ing Sid e #2 o f th e Circu it Sett er B ala nce Val ve
Calculator, set the hairline over the degree of closure as
indicated by the part of the red plastic knob or indicator
plate parallel to the degree of closure noted on the calibra­tion plate, and read actual GPM flowing through the Circuit
Setter opposite the gauge reading head loss noted in the
white section of Side #2.

NOTE:

• If the system contains a liquid with a specific gravity and/or
viscosity higher or lower than that of water, apply the
appropriate correction factor noted in these instructions to
obtain the actual GPM for the system liquid.

H

OW TO USE BELL & GOSSETT CIRCUIT SETTER

B

ALANCE VALVES AS AN ISOLATION VALVE

1. Move the adjustment knob or stem until the position indi­cator aligns with the closed position on the calibration
plate.

2. Close the isolation valve on the other side of the equip­ment to be serviced.

3. Open the drain valve to drain the system between the
Circuit Setter and the second isolation valve.

HOW TO USE THE MEMORY STOP FEATURE

1. Make the final degree of closure setting.

2. Loosen the memory stop locking screw in the slot on the
top of red knob.

3. Slide the memory stop screw in the slot (counter-clockwise
for

1

/2" - 1" sizes and clockwise for 11/4" thru 21/2" sizes)

until the screw stops.

4. Tighten the memory stop screw.

SERVICING INSTRUCTIONS

Periodically inspect the Circuit Setter for signs of leakage or
corrosion.

INSULATION

Bell & Gossett recommends that insulation be attached to the
Circuit Setter after the system has been b alanced and
G95872 tag (with properly filled in information) has been
wired to the Circuit Setter.

NOTE:

• Tape or other acceptable means should be used to secure
the insulation to the Circuit Setter Balance Valve.

3

IMPORTANT: If a high degree of throttling of flow at

pump discharge is required, Bell & Gossett recom­mends that the pump impeller be sized to produce design
flow. This will reduce electrical energy consumption.

WARNING: Hot water leakage can occur from read-

out valve during probe insertion and during hookup of
readout kit. Follow the instruction manual a supplied with
readout probes and readout kit for safe use. Failure to fol­low this instruction could result in serious personal injury
and/or property damage.

W

ARNING: Check for proper sealing when using as

an isolation valve. If the seat is not sealing properly,
liquid will continue to flow from the drain valves. In this
case, Circuit Setter must be isolated from the system and
replaced. Failure to follow these instructions could result in
serious personal injury or death and property damage.

WARNING: Corrosion or leakage is indication that

the Circuit Setter must be replaced. Failure to follow
these instructions could result in serious personal injury or
death and property damage.

B&G CIRCUIT SETTER

CORRECTION FACTORS FOR

VISCOSITY AND SPECIFIC GRAVITY

GPMƒ=

ƒ=

GPMƒ=ƒ GPM

VISCOSITY

CENTIPOISE 1 10 15 25 35 60 100 200 500

S.G. S.G.

√

.60 .775 1.29 .123 1.16 1.10 1.03 0.97 0.90 0.84 0.78
.65 .806 1.24 1.18 1.12 1.05 0.99 0.93 0.87 0.81 0.75
.70 .837 1.20 1.14 1.08 1.02 0.96 0.90 0.84 0.78 0.72
.75 .866 1.16 1.10 1.04 0.98 0.92 0.87 0.81 0.75 0.69
.80 .894 1.12 1.06 1.01 0.95 0.89 0.84 0.78 0.73 0.67
.85 .922 1.08 1.03 0.98 0.92 0.87 0.81 0.76 0.71 0.65
.90 .949 1.05 1.00 0.95 0.90 0.84 0.79 0.74 0.69 0.63
.95 .975 1.03 0.97 0.92 0.87 0.82 0.77 0.72 0.67 0.62

1.00 1.00 1.00 0.95 0.90 0.85 0.80 0.75 0.70 0.65 0.60

1.05 1.025 0.98 0.93 0.88 0.83 0.78 0.73 0.68 0.63 0.59

1.10 1.049 0.95 0.91 0.86 0.81 0.76 0.72 0.67 0.62 0.57

1.15 1.072 0.93 0.89 0.84 0.79 0.75 0.70 0.65 0.61 0.56

1.20 1.096 0.91 0.87 0.82 0.78 0.73 0.68 0.64 0.59 0.54

1.25 1.118 0.89 0.85 0.81 0.76 0.72 0.67 0.63 0.58 0.54

1.30 1.140 0.88 0.84 0.79 0.75 0.70 0.66 0.62 0.57 0.53

1.35 1.162 0.86 0.82 0.78 0.73 0.69 0.65 0.60 0.56 0.52

1.40 1.183 0.85 0.80 0.76 0.72 0.68 0.63 0.59 0.55 0.51

Ø

GPM

S.G.

√

Ø

S.G.

√

s

Ø1.95 .90 .85 .80 .75 .70 .65 .60

GPMƒ– FLUID FLOW

s

GPM

s – FLOW THRU SETTER

(a MEASURED CONDITIONS)

Ø–VISCOSITY CORRECTION

S.G. – SPECIFIC GRAVITY (TO WATER)

ƒ

Xylem Inc.

8200 N. Austin Avenue
Morton Grove, Illinois 60053
Phone: [phone]
Fax: [phone]
www.xyleminc.com/brands/bellgossett

Bell & Gossett is a trademark of Xylem Inc. or one of its subsidiaries.
© 2012 Xylem Inc. V58045B September 2012