Install Instructions

ManualsBrandsBell & Gossett ManualsB&G Balancing ValvesCB-2 1/2 Circuit Setter Balance Valve, 2-1/2" (NPT)

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.

INSTALLATION INSTRUCTIONS

NPT and sweat style Circuit Setter Balance Valves are

equipped w

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

is to be used to drain a riser on the downstream side of a ter-

minal 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

older and a good

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.

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 IN-

STRUCTIONS MAY RESULT IN A SAFETY HAZARD.

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.

Maximum Maximum

Type

Limitations Limitations

Solder

/2" - 1"1

/4" - 2

/2"

Pressure Temp Pressure Temp

psi (kPa) °F (°C) psi (kPa) °F (°C)

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)

Circuit Setter Plus

Model MC

OPERATIONAL LIMITS

WORKING PRESSURE & TEMPERATURE LIMITS

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

WARNING: Damage to the Circuit Setter or failure

of solder sealing joints may occur if these opera-

tional limits are exceeded. This can result in water leak-

age. Failure to follow this instruction can cause serious

personal injury and/or property damage.

/2 1SEZISTPN& TAEWS "1 OT "

/4" TO 2

/2" SWEAT & NPT SIZES

INSTRUCTION MANUAL

V58045B

Summary of content (4 pages)

PAGE 1
INSTRUCTION MANUAL V58045B 1/2" TO 1" SWEAT & NPT SIZES 11/4" 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.
PAGE 2
e) Check the soldered connection for leaks. 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.
PAGE 3
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.
PAGE 4
B&G CIRCUIT SETTER CORRECTION FACTORS FOR VISCOSITY AND SPECIFIC GRAVITY GPMƒ = Ø √ S.G. GPMs GPMƒ – FLUID FLOW GPMs – FLOW THRU SETTER (a MEASURED CONDITIONS) Ø ƒ = √S.G. Ø – VISCOSITY CORRECTION S.G. – SPECIFIC GRAVITY (TO WATER) GPMƒ = ƒ GPMs S.G. .60 .65 .70 .75 .80 .85 .90 .95 1.00 1.05 1.10 1.15 1.20 1.25 1.30 1.35 1.40 VISCOSITY CENTIPOISE Ø √ S.G. .775 .806 .837 .866 .894 .922 .949 .975 1.00 1.025 1.049 1.072 1.096 1.118 1.140 1.162 1.183 1 1 10 .95 15 .90 25 .85 35 .80 1.29 1.24 1.