Taco SR503-4 3 Zone Switching Relay On sale
Taco SR503-4 3 Zone Switching Relay,
Fully Enclosed Snap-Out Relays.Switchable Priority.External Indicator Lights.Three zone with priority.Simplified Wiring.. Description for Taco SR503 4 The Taco SR503 4 Switching Relay is the best choice for all your zoning needs with advanced PowerPort Cards external diagnostic lights SR503EXP TACO 3 ZONE HOT WATER HEATING SYSTEM CIRCULATOR PUMP RELAY with PRIORITY ZONE: Incandescent Bulbs: Amazon com: Industrial & ScientificDescription for Burnham AL27SL Maximum First Hour Rating at 135°F (gal /hr ) : 200 ; Continuous Draw Rating at 135°F (gal /hr ) : 162 ; Standby Loss (°F/hr ) : 72sr 503 thermostats zone1 zone2 zone3 24 vac power 120 volt circulators zone1 zone2 zone3 to: "tt" on aquastat control to: "tt" on aquastat control
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