Caleffi ZSR103 - Z-one™ Relay (three zone)

Multi-Zone Pump Control

The ZSR103 is a multi-zone pump and boiler operating control for multiple zone hydronic heating or cooling systems. The ZSR103 interfaces with low voltage thermostats, or any other low voltage controllers having a switching action. The ZSR103 controls up to 3 heating circulator pumps, a primary pump and has LED indicators to provide functional status and easy system troubleshooting.

ZSR106 Internals (ZSR103 is identical minus three zones)

Features: 

Multiple Thermostat Configuration

Specification:

Power supply: 120 VAC, 50/60 Hz
Transformer voltage: 24 VAC
Maximum transformer load: 12 VA (ZSR103
Electrical switch rating pump output: 120 VAC, 5A each (20A max combined)
Dry contact rating, Zone 1 ES, XX, AUX: 120 VAC max, 2A each
Replaceable fuses: Type 2AG, 5A slow blow
Working temperature range: 32°F (0°C)—115°F (45°C)
Maximum humidity: 90% non-condensing
Approvals: Conforms to UL873 / Certified to CSA C22 No 24, listed by ETL

Return Policy

We want you to be 100% satisfied with your purchase, if you are not, ship it back to us in the original packaging condition and we will refund your purchase less a 10% restocking fee, provided the equipment is received in good condition. Refund offer valid for 30 days from receipt of product.

We accept PayPal and Credit card (Visa or MasterCard). If you are ordering multiple units and part, please call us to see if we can save you shipping cost for multiple item orders.

For complete solar kits please allow 2-3 weeks delivery. These kits are shipped via our preferred freight forwarder company and where possible we will schedule residential tailgate delivery (curbside). Heaters and accessories are usually in stock unless indicated otherwise. We do have expedited shipping services available for an additional fee. Please call us if you need a rush order. Once your order has been shipped you will be contacted via email and a tracking number will be provided.