Installation Manual

Technical specifications
Materials
Three-way mixing valve unit:
Body: brass
Bonnet: brass
Shutter: PSU
Seals: EPDM
Top elbow with supply temperature gauge: brass
Primary circuit hydraulic separator:
Body: brass
Check valve: POM
Spring: stainless steel
Shut-off valves:
Body: brass
Ball: brass, chrome plated
Supply and Return Manifolds:
Body: brass
Springs: stainless steel
Seals: EPDM
End fittings: brass
Automatic air vent: brass
Drain valve: brass
Performance
Suitable fluids: water, glycol solutions
Max. percentage of glycol: 30%
Control temperature range: 80–130°F (25–55°C)
Accuracy: ±4°F (±2°C)
Primary inlet max. temperature: 195°F (90°C)
Max. working pressure: 150 psi (10 bar)
Min. opening pressure for primary circuit check valve: 1.5 psi (10 kPa)
Mixed outlet temperature gauge: 2” diameter
Dual-scale from 30° F to 210° F and 0° C to 100° C
Connections: - primary circuit: 3/4” NPT male
- to mixing valve unit: 1” Female with nut
- manifold circuit outlets: 3/4” male “eurocone” (requires Caleffi manifold fitting)
- outlet center distance: 2” (50 mm)
Pump
Three-speed pump ‡: Grundfos model UPS 15-58
Body: cast iron
Electric supply: 115 V - 60 Hz
Max. ambient temperature: 105°F (40°C)
Protection class: IP 44
Pump center distance: 6 1/2” (165 mm)
Pump connections: 1 1/2”
‡ Alpha 25-55U pump available on 172 HE models. Refer to the mfr manuals for information.
2