Primo HE - Manual

st protecH 100 stD

st protecH 100 stD 125-150-210-300 Direct itD 125-150-210-300 Direct PRESSURE + TEMPERATURE RELIEF VALVE COLD MAINS-IN 15/22mm COMBINATION VALVE COLD MAINS-IN 22mm 15mm COMBINATION VALVE EXPANSION VESSEL EXPANSION VESSEL PRESSURE + TEMPERATURE RELIEF VALVE HOT SUPPLY 15/22mm EXPANSION RELIEF PIPE TUNDISH HOT SUPPLY 22mm EXPANSION RELIEF PIPE SECONDARY RETURN TUNDISH 22mm 22mm DRAIN MAX. 100mm MAX. 100mm FiG. 3.1 FiG. 3.2 sti 125-150-210-300 inDirect iti 100-125-150-210-250-300 inDirect itsi 210-250-300 twin coil inDirect (DuAl HeAt source) COMBINATION VALVE COLD MAINS-IN 22mm COMBINATION VALVE COLD MAINS-IN 22mm EXPANSION VESSEL EXPANSION VESSEL PRESSURE + TEMPERATURE RELIEF VALVE PRESSURE + TEMPERATURE RELIEF VALVE HOT SUPPLY 22mm HOT SUPPLY 22mm EXPANSION RELIEF PIPE FLOW SECONDARY RETURN TUNDISH ZONE VALVE EXPANSION RELIEF PIPE SECONDARY RETURN TUNDISH ZONE VALVE FLOW RETURN FLOW 22mm 22mm ZONE VALVE DRAIN DRAIN RETURN RETURN MAX. 100mm MAX. 100mm FiG. 3.3 10 NOTE: FLOW AND RETURN PIPES MAY BE CONNECTED IN REVERSE TO THAT SHOWN IN THE DIAGRAMS FOR INDIRECT CYLINDERS. FiG. 3.4

itsi 210-250-300 inDirect (linkeD coils) sti 500 inDirect COLD MAINS-IN 28mm COMBINATION VALVE COLD MAINS-IN 22mm EXPANSION VESSEL COMBINATION VALVE EXPANSION VESSEL HOT SUPPLY 28mm PRESSURE + TEMPERATURE RELIEF VALVE PRESSURE + TEMPERATURE RELIEF VALVE HOT SUPPLY 22mm FLOW EXPANSION RELIEF PIPE EXPANSION RELIEF PIPE SECONDARY RETURN TUNDISH RETURN ZONE VALVE ZONE VALVE SECONDARY RETURN TUNDISH FLOW 22mm FLOW 22mm DRAIN DRAIN RETURN RETURN MAX. 100mm MAX. 100mm FiG. 3.5 FiG. 3.6 stD 500 Direct COLD MAINS-IN 28mm COMBINATION VALVE EXPANSION VESSEL HOT SUPPLY 28mm PRESSURE + TEMPERATURE RELIEF VALVE EXPANSION RELIEF PIPE SECONDARY RETURN TUNDISH 22mm DRAIN MAX. 100mm FiG. 3.7 11