Grundfos UPZCP-1 is single-zone pump control relay for domestic hydronic heating systems. UPZCP-1 relay provides control when zoning with pumps or low voltage zone valves for single zone. Replaces Taco: SR501-4.

Features:

• Compatible with 2-, 3-, and 4-wire low voltage controllers or thermostats;
• Wiring ease with 120 VAC, ground and low voltage screw terminal inputs;
• Low voltage end-switch output terminals for the zone valves;
• Front facing LED indicator lights on the cover;
• Side mounted terminal connections for ease of wiring and installation.

Technical Specifications:

• Input Power (60 Hz): 120 VAC;
• Transformer Voltage: 24 VAC, 40 VA, Class 2;
• Thremostat Output: 0.125 A;
• Maxmum Single Phase Motor Rating (per zone): 5 A;
• Maximum combined load rating (output @ 120 VAC): 10 A;
• Temperature Range (storage): 50 - 100°F (10 - 38°C);
• Temperature Range (maximum operation): 0 - 100°F (-18 - +38°C);
• Maximum operating humidity range: 90% RH;
• Number of Knockouts: 6;
• Size of knockouts: 0.875" (22mm);
• Dimensions (W x H x D): 5.93" x 4.80" x 2.36" (151mm x 122mm x 60mm);
• Relay Type: Sealed;
• Cover Panel: ABS - Fire Rated;
• Base Material: Galvanized Steel;
• Terminal Block (sied mounted): PA66;
• Approvals: CSA 22.2 No 24/UL Standard 873.