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Posted by John on June 06, 2009 at 13:40:41:
I have an Argo 4Z controller, ARM 842DP,currently using three of 4 zones, each Z with Taco 007. Zone 1 is indirect fired HWH with domestic hot water priority switch selected. Argo isolated switch fires boiler, Burnham Spirit. I want to add Tekmr 260 and use DHW priority. Wiring of 260 indoor/outdoor sensors and 120 Vac line voltage in connections are straightforward (connect to terminals 5 (L) & 6(N). Need help on other connections. I think I should remove 18/2 wire from boiler to isolated Argo switch switch and connect to terminals 11 & 12. Need help on wiring:Boiler Demand, DHW Demand,Boiler P1, DHW Pump, and whether I need to connect Terminal 8 .