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Caleffi ZSR series Pump Zone 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

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