Bell & Gossett V1000187C Circuit Setter Plus Calibrated Balance Valves – Lead-Free - Manual (Page 3)

CAUTION: Hot un-insulated surfaces can cause burns to the skin. Do not touch hot surfaces. Failure to follow
these instructions could result in personal injury.
CAUTION: 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 caution could result in serious personal injury.
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 Setter Balance Valves for pre-set flow balancing
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 know by hand on sizes ½” thru 1” or by placing a wrench on the wrench
flats provided on sizes 1-1/4” thru 3” to set the position determined by the preceding procedure.
CAUTION:
Heat associated with the use of silver solder may damage a Circuit Setter voiding the warranty. Do
not use silver solder. Failure to follow these instructions could result in property damage and/or moderate
personal injury.
CAUTION: Excessive use of solder in a vertical installation may result in damage to the valve seat and ball. Do
not use excessive flux. Failure to follow these instructions could result in property damage and/or moderate
personal injury.
4. When sweating the joints, first wrap the valve body with a cool wet rag, then direct the flame with care to avoid sub-
jecting the Circuit Setter to excessive heat. Allow the valve body to cool below 200°F before installing the (2) Model
RV-125A Readout Valves packaged with the Circuit Setter Balance Valve.
The use of PTFE impregnated pipe CAUTION: compound and PTFE tape on threads provides lubricity. Care
should be taken to prevent overtightening of the readout valves which may damage the Circuit Setter.
5. Check soldered connections for leaks. If resoldering is required, remove the readout valves before applying the
torch to the connection(s).
1. Apply pipe compound conservatively to male connecting fittings only.
CAUTION: The use of PTFE impregnated pipe compound and PTFE tape on threads provides lubricity. Care
should be taken to prevent overtightening of the readout valves which may damage the Circuit Setter.
2. Check connections for leaks.
Circuit Setter Balance Valves With Connections
NPT
All Circuit Setter balance valves within a common zone, circuit, or system, with a common pump, are brought into