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Function
The ThermoSetter™ 1164 series adjustable thermal balancing
valve is used for automatic balancing of recirculation loops in
domestic hot water systems, to speed hot water delivery, reduce
water waste and save energy. The internal thermostatic balancing
cartridge automatically modulates flow to ensure a constant
temperature in the recirculation piping system. The 116 Series
has an adjustment knob with 105°F to 150°F (40°C to 65°C)
temperature scale indication. The adjustment knob is lockable for
tamper-proofing. An integral dry-well holds a slide-in temperature
gauge for local indication, or a sensor for remote temperature
sensing. The optional check valve protects against circuit thermo-
syphoning.
ThermoSetter™
Recirculation Thermal Balancing Valve
H0006934.01
1164 Series
Installation, commissioning and servicing instructions
Product range
1164 series
ThermoSetter, models w/ and w/o temperature
gauge, w/ and w/o check valve.........................connections ½” and ¾” NPT female
www.caleffi.com
The valve is ICC-ES certified to NSF/ANSI 61 (180°F/82°C Commercial Hot) and NSF/ANSI 372, low
lead laws. It meets codes IPC, IRC, UPC and NPC for use in accordance with the US and Canadian
plumbing codes.
NSF 61
Technical specifications
Materials
Body: DZR low-lead brass EN 12165 CW724R
Adjustable cartridge: PSU
Springs: Stainless steel EN 10270-3
(AISI 302)
Hydraulic seals: peroxide-cured EPDM
Adjustment knob: ABS
Performance
Suitable fluid: water
Max. working pressure: 230 psi (16 bar)
Max. differential pressure: 15 psi (1 bar)
Adjustable temperature range:
105–150°F (40 – 65°C)
Factory setting: 135°F (58°C)
Max. inlet temperature: 195°F (90°C)
Cv (Kv) max: 2.1 (1.8)
Cv (Kv) min: 0.35 (0.3)
Cv (Kv) design: 0.69 (0.6)
Certifications
1. Complies with codes IPC, IRC, UPC and
NPC.
2. ICC-ES certified to NSF/ANSI 61
(180°F/82°C Commercial Hot), file
PMG-1512.
3. NSF/ANSI 372, low lead certified by ICC-
ES, file PMG-1360.
Connections
Main connnections:
½” NPT female
¾” NPT female
Temperature gauge/probe pocket:
Ø 10 mm metric
Temperature gauge code 116010
Scale: 30 - 180°F (0–80°C)
Diameter: 1½” (40 mm)
Stem diameter: 0.35” (9 mm)
