Glenn, I see in your photo you have both zone valves and pumps. The pump control would be the ZSR model so a ZSR104 would provide you the four zone control. Zone 1 i would recommend using for the DHW because you can select the "priority" setting to make that the priority zone. Zones 2-4 would be for space heating. Please follow this link to the wiring guide for our zone relays and if you have any quesitons or want to discuss contact our tech support line at (414)238-2360
Glenn, I see in your photo you have both zone valves and pumps. The pump control would be the ZSR model so a ZSR104 would provide you the four zone control. Zone 1 i would recommend using for the DHW because you can select the "priority" setting to make that the priority zone. Zones 2-4 would be for space heating. Please follow this link to the wiring guide for our zone relays and if you have any quesitons or want to discuss contact our tech support line at (414)238-2360