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INSTRUCTION MANUAL
V1000187C
1/2” to 3” NPT size
1/2” to 2” Sweat size
Circuit Setter® Plus Calibrated Balance Valves
CSA Certified: AB1953; Vermont S152; Maryland House Bill 372 (Statute 12-605)
NSF/ANSI-372
INSTALLER: PLEASE LEAVE THIS MANUAL FOR THE OWNER’S USE.
NOTE:
Bell & Gossett recommends Lead Free Brass or Stainless Steel Booster Pumps be used for pumping 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 THE INSTRUCTIONS MAY RESULT IN A SAFETY HAZARD.
Safety Message Level
DANGER:
Indication
A hazardous situation, which if not avoided, will result in death or serious injury.
WARNING:
CAUTION:
ELECTRICAL HAZARD:
NOTICE:
A hazardous situation, which if not avoided, will result in death or serious injury.
A hazardous situation, which if not avoided, will result in major or minor injury.
The possibility of electrical risks if instructions are not followed in a proper
manor.
• A hazardous situation, which if not avoided, will result in an indescribable
result or state.
• A practice not related to personal injury.
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Operational Limits
Valve Temperature Max Working Pressure
Circuit Setter
Type Solder Maximum Limitations 1/2” - 1” Maximum Limitations 1-1/4” - 2”
95-5
Tin-Antimony
Description
Bell & Gossett Circuit Setter Plus Balance Valves are precision engineered valves used in heating and cooling systems
which function as precise system balancing valves and highly accurate variable orifice flow meters.
Installation Instructions
Circuit Setter Balance Valves are bi-directional valves and can be installed in most attitudes; however, they should be
installed in a position to facilitate the ease of balancing the system.
NPT and sweat style Circuit Setter Balance Valves are equipped with 1/4” NPT plugged drain port. If the drain port 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.
NPT -4°F (-20°C) to 250°F (120°C) 400 PSI (2758 kPa)
Sweat Based on Solder Type ASTM Std. B16.18
Pressure PSI (kPa) Temp °F (°C) Pressure PSI (kPa) Temp °F (°C)
300 (2069) 200 (93) 300 (2069) 175 (79)
250 (1724) 225 (107) 250 (1724) 200 (93)
200 (1379) 250 (121) 175 (1207) 250 (121)
NOTICE: Bell & Gossett Circuit Setter Balance Valves are not recommended for use with meter connections pointing
down. Dirt and debris will collect in the connections and foul up the readout valves and readout meters.
To retain calibrated accuracy, a minimum length of unrestricted straight pipe adjacent to the valve should be
maintained as follows:
A
Size
1/2” - 3” 3 1
When installing the Circuit Setter in a coil hook-up kit, the valve should be installed on the return side of the coil with
union end adapter on the upstream side and other end on the downstream side, except when used on the bypass line.
Be aware of water weight in the valve and connected piping when installing your system.
NOTICE: Never use the valve itself as a form of piping support. Please support valves and piping according to the local building code. Failure to follow these instructions may result in property damage.
Upstream ”A”
(In pipe diameter)
Downstream ”B”
(In pipe diameter)
B
Circuit Setter Balance Valves With Sweat Connections
1. Use a torch with a sharp pointed flame.
2. Clean tube ends and Circuit Setter connections thoroughly.
3. Use 95-5 (Tin-Antimony) solder and a good grade of flux.