Product Overview

ManualsBrandsCaleffi ManualsHeating Supplies166 HydroMixer Dual Line w/ UPS15-58FC 3 Speed Pump on Right

01238/13 NA

HydroMixer

™

thermostatic fixed

temperature mixing unit

166 series

Function

The 166 series HydroMixer™ provides a fixed temperature flow to

low temperature secondary heating circuits (such as floor radiant

panels), complete with onboard three-speed or variable-speed pump,

thermostatic three-way mixing valve with built-in temperature sensor,

check valve, supply and return temperature gauges, secondary circuit

shut-off ball valves and pre-formed insulation shell. Versions are

available with either the three-speed Grundfos UPS 15-58 pump or

the variable-speed Alpha 25-55U pump.

The unit can be ordered with supply flow and pump on the right or

left side, and the unit is field reversible to accommodate changing

installation requirements. The adjustable differential pressure by-pass

valve, code 519600 and wall bracket code 165001 are optional. The

unit comes with male union connections which require separately

purchased, 1 inch sweat or NPT, top outlet and bottom inlet fitting

kits.

Product Range

Code 166600A Thermostatic fixed temperature mixing unit with Grundfos UPS 15-58 pump on right side............connections 1” sweat or NPT union*

Code 166610A Thermostatic fixed temperature mixing unit with Grundfos UPS 15-58 pump on left side..............connections 1” sweat or NPT union*

Code 166602A Thermostatic fixed temperature mixing unit with Grundfos Alpha 25-55U pump on right side.......connections 1” sweat or NPT union*

Code 166612A Thermostatic fixed temperature mixing unit with Grundfos Alpha 25-55U pump on left side..........connections 1” sweat or NPT union*

*Fitting sets sold separately

CALEFFI

Technical Characteristics

Materials

Three-way thermostatic mixing valve

Body: brass

Shutter: PSU

Spring: stainless steel

Seals: EPDM

Connecting pipes

Material: steel

Check valve

Body: brass

Shutter: PPAG40

Shut-off ball valves

Body: brass

Performance

Suitable fluids: water, glycol solution

Max. percentage of glycol: 30%

Max. working pressure: 145 psi (10 bar)

Adjustable temperature range: 80–125°F (25–50°C)

Primary inlet max. temperature: 212°F (100°C)

Connections: male union threads

- top outlets: 1-1/4” male straight

- bottom inlets: 1-1/2” male straight

- inlet/outlet center distance: 5 inches (125 mm)

Pump

Three-speed pump: Grundfos: UPS 15-58-130;

Variable-speed pump: Grundfos: ALPHA 25-55U;

Body material: cast iron

Power supply: 115 V 50/60 Hz

Protection class: Class F

Pump center distance: 5-1/8” (130 mm)

Pump connections: 1 1/2” male straight

Temperature gauges

Dual scale: 32 –176°F (0 – 80°C)

Technical specification of insulation

Material: EPP

Thickness: 1 1/8” (30 mm)

Density: 3 lb/ft

(45 kg/m

)

Working temperature range: 25–250°F (-5–120°C)

Thermal conductivity: 0.037 W/(m·K) at 10°C

Fire resistance (UL94): class HBF

Adjustable Differential by-pass valve code 519006 (optional)

Body: brass

Valve plug: EPDM

Spring: stainless steel

Seals: EPDM

Max. working pressure: 145 psi (10 bar)

Max. working temperature: 212°F (100°C)

By-pass differential pressure setting range: 0.3 – 4.3 psi (2 – 30 kPa)

Connections: 1” male x 1” male (straight)

Wall bracket code 165001 (optional)

Material: stainless steel

ACCREDITED

ISO 9001 No. 0003

ISO 9001 FM 21654

Summary of content (7 pages)

PAGE 1
HydroMixer™ thermostatic fixed temperature mixing unit 166 series CALEFFI ACCREDITED ISO 9001 FM 21654 ISO 9001 No.
PAGE 2
Dimensions E C F F A B B H F A A B B H A B C 1 1/4” 1 1/2” 5” D D A E C F G D E F 14 1/4” 9 3/4” 2 7/8” G H Weight(lb) 10” 3 3/16” 22 Code 166600A Description 166610A Thermostatic fixed temperature mixing unit with Grundfos 15-58 pump on left 166602A Thermostatic fixed temperature mixing unit with Grundfos Alpha 25-55U pump on right 166612A Thermostatic fixed temperature mixing unit with Grundfos Alpha 25-55U pump on left 6 G Thermostatic fixed temperature mixing
PAGE 3
Operating Principle The fluid temperature is controlled by a thermostatic three-way mixing valve regulated by a thermostatic sensor (1) located in the mixed water outlet chamber (2) of the valve. By expanding and contracting, it continuously ensures a correct proportioning of hot water coming from the boiler, and water returning from the secondary circuit.
PAGE 4
Hydraulic characteristic of code 519006 Differential pressure by-pass valve Wall bracket 165001 Wall mounting bracket for 166 series units. Stainless steel. Bracket installation The mounting bracket for wall placement must be attached with dowels, using the special holes in the base. ∆p (kPa) (psi) 80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 11.6 10.9 10.1 9.4 8.7 8 7.2 6.5 5.8 5 4.3 3.6 2.9 2.2 1.4 .7 0 Calibration positions 3.0 2.5 2.0 1.5 1.0 0.5 0.2 0 .05 .11 .16 .22 2.5 3.5 .27 .
PAGE 5
Reversible left-right The group is assembled at the factory with right side discharge with upward flow, codes 166600A or 166602A, or with left side discharge with upward flow, codes 166620A or 166612A. If not acceptable, or field installation plans have changed, the position of the direction of flow can be switched. Follow the instructons below to switch sides as needed: 1. Remove insulation; front and rear shells.
PAGE 6
Accessories Bottom Inlet fitting set fits 165 series. Includes (2) union nuts, (2) tail pieces and (2) washers. Will not fit top outlet thread. Top outlet fitting set fits 165 series. includes (2) union nuts, (2) tail pieces and (2) washers. Will not fit bottom inlet thread. Code NA16069 Code NA16169 Description 1” sweat outlet union fitting Bottom Inlet fitting set fits 165 series. Includes (2) union nuts, (2) tail pieces and (2) washers. Will not fit top outlet thread.
PAGE 7
SPECIFICATION SUMMARY HydroMixer™ 166 series Thermostatic fixed temperature mixing unit for low temperature heating systems. Factory pre-assembled configurations selectable either with upward flow and discharge (pump mounting) on right side or left side, and field reversible. Union connections to the secondary supply and return header (bottom connections) 1 1/2 “ male straight threads. Union connections to the system supply and return circuit (top connections) 1 1/4” male straight threads.