4 Zone Pump Control

The ZSR series is multi-zone pump and boiler operating control for multiple zone hydronic heating systems. The ZSR series interfaces with low voltage thermostats, or any other low voltage controllers having a switching action. The ZSR series controls up to 3, 4, 5 or 6 heating circulator pumps, depending on model selected, a primary pump and has LED indicators to provide functional status and easy system troubleshooting. In addition, a primary pump system circulator is switched on whenever any zone calls for heat. Power supply: 120 VAC, 50/60 Hz Transformer voltage: 24 VAC Maximum transformer load: 12 VA (ZSR103/4), 20 VA (ZSR106) Electrical switch rating: 20A max combined Electrical switch rating pump output: 120 VAC, 5A each Dry contact rating, AUX, XX, ZONE1 E/S: 120 VAC max, 2A each Replaceable fuses: Type 2AG, 5A slow blow