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This document contains application engineering drawings for the Rinnai I-Series Condensing Boiler. For more information on the I-Series Condensing Boiler, visit rinnai.us. The bottom, right corner of each drawing contains document information such as title, drawing number, revision, total number of sheets, and more. Listed below are abbreviations used throughout this document.
Example: 1I-S-2BR-PS Example: 1 I - S - 2 BR - PS IIW-2S-2ZP-I Number of Boilers (1, 2, 3, or 4) S - 2 ZP - I W = Wiring Diagram Number of Boilers (1, 2, 3, or 4) Boiler Type • C = Combi • S = Solo Boiler Type • C = Combi • S = Solo Number of Zones (1, 2, 3, or 4) Number of Zones (1, 2, 3, or 4) Zone Description A = Air Handler B = Baseboard BR = Baseboard and Radiant CM = Crossover Mode CR = Cast Iron Radiator HX = Heat Exchanger I = Indirect Tank O = Oxygen Permeable Piping P = Pool Heating P
8 5 6 7 C 2 3 Outdoor Reset Notes: D 4 1 Optional LWCO Condensate piping shall be CPVC or PVC material and shall not be smaller than the drain connection on the appliance. Condensate must be disposed of according to local codes. Air eliminator should be located at least 12 inches away from the first bend on the supply. Reference the boiler installation manual for recommended glycol brands and mixed ratio. Reference vent section of the installation manual regarding venting.
8 Outdoor Reset Notes: D C 5 6 7 Condensate piping shall be CPVC or PVC material and shall not be smaller than the drain connection on the appliance. Condensate must be disposed of according to local codes. Air eliminator should be located at least 12 inches away from the first bend on the supply. Reference the boiler installation manual for recommended glycol brands and mixed ratio. Reference vent section of the installation manual regarding venting.
8 5 6 7 2 3 Outdoor Reset Notes: D 4 1 Optional LWCO Condensate piping shall be CPVC or PVC material and shall not be smaller than the drain connection on the appliance. Condensate must be disposed of according to local codes. Air eliminator should be located at least 12 inches away from the first bend on the supply. Reference the boiler installation manual for recommended glycol brands and mixed ratio. Reference vent section of the installation manual regarding venting.
5 6 7 Notes: D C 4 Outdoor Reset Condensate piping shall be CPVC or PVC material and shall not be smaller than the drain connection on the appliance. Condensate must be disposed of according to local codes. Air eliminator should be located at least 12 inches away from the first bend on the supply. Reference the boiler installation manual for recommended glycol brands and mixed ratio. Reference vent section of the installation manual regarding venting.
8 7 Notes: D C 5 6 4 Optional LWCO 2 3 1 Optional LWCO Outdoor Reset Condensate piping shall be CPVC or PVC material and shall not be smaller than the drain connection on the appliance. Condensate must be disposed of according to local codes. Air eliminator should be located at least 12 inches away from the first bend on the supply. Reference the boiler installation manual for recommended glycol brands and mixed ratio. Reference vent section of the installation manual regarding venting.
8 7 Notes: D C 5 6 4 Optional LWCO 2 3 1 Optional LWCO Outdoor Reset Condensate piping shall be CPVC or PVC material and shall not be smaller than the drain connection on the appliance. Condensate must be disposed of according to local codes. Air eliminator should be located at least 12 inches away from the first bend on the supply. Reference the boiler installation manual for recommended glycol brands and mixed ratio. Reference vent section of the installation manual regarding venting.
8 5 6 7 4 Outdoor Reset Notes: D 2 3 1 Optional LWCO Condensate piping shall be CPVC or PVC material and shall not be smaller than the drain connection on the appliance. Condensate must be disposed of according to local codes. Air eliminator should be located at least 12 inches away from the first bend on the supply. Reference the boiler installation manual for recommended glycol brands and mixed ratio. Reference vent section of the installation manual regarding venting.
8 5 6 7 C 2 3 Outdoor Reset Notes: D 4 1 Optional LWCO Condensate piping shall be CPVC or PVC material and shall not be smaller than the drain connection on the appliance. Condensate must be disposed of according to local codes. Air eliminator should be located at least 12 inches away from the first bend on the supply. Reference the boiler installation manual for recommended glycol brands and mixed ratio. Reference vent section of the installation manual regarding venting.
8 Notes: D C 5 6 7 Condensate piping shall be CPVC or PVC material and shall not be smaller than the drain connection on the appliance. Condensate must be disposed of according to local codes. Air eliminator should be located at least 12 inches away from the first bend on the supply. Reference the boiler installation manual for recommended glycol brands and mixed ratio. Reference vent section of the installation manual regarding venting.
8 5 6 7 Notes: D 4 Outdoor Reset Condensate piping shall be CPVC or PVC material and shall not be smaller than the drain connection on the appliance. Condensate must be disposed of according to local codes. Air eliminator should be located at least 12 inches away from the first bend on the supply. Reference the boiler installation manual for recommended glycol brands and mixed ratio. Reference vent section of the installation manual regarding venting.
8 Notes: D C 5 6 7 Condensate piping shall be CPVC or PVC material and shall not be smaller than the drain connection on the appliance. Condensate must be disposed of according to local codes. Air eliminator should be located at least 12 inches away from the first bend on the supply. Reference the boiler installation manual for recommended glycol brands and mixed ratio. Reference vent section of the installation manual regarding venting.
8 5 6 7 Notes: D C 4 Outdoor Reset Condensate piping shall be CPVC or PVC material and shall not be smaller than the drain connection on the appliance. Condensate must be disposed of according to local codes. Air eliminator should be located at least 12 inches away from the first bend on the supply. Reference the boiler installation manual for recommended glycol brands and mixed ratio. Reference vent section of the installation manual regarding venting.
8 5 6 7 Outdoor Reset Notes: D C 4 Condensate piping shall be CPVC or PVC material and shall not be smaller than the drain connection on the appliance. Condensate must be disposed of according to local codes. Air eliminator should be located at least 12 inches away from the first bend on the supply. Reference the boiler installation manual for recommended glycol brands and mixed ratio. Reference vent section of the installation manual regarding venting.
8 5 6 7 Outdoor Reset Notes: D C 4 Condensate piping shall be CPVC or PVC material and shall not be smaller than the drain connection on the appliance. Condensate must be disposed of according to local codes. Air eliminator should be located at least 12 inches away from the first bend on the supply. Referance the boiler installation manual for recommanded glycol brands and mixed ratio. Referance vent section of the installation manual regarding venting.
8 5 6 7 4 C 1 Outdoor Reset Notes: D 2 3 Condensate piping shall be CPVC or PVC material and shall not be smaller Optional LWCO than the drain connection on the appliance. Condensate must be disposed of according to local codes. Air eliminator should be located at least 12 inches away from the first bend on the supply. Reference the boiler installation manual for recommended glycol brands and mixed ratio. Reference vent section of the installation manual regarding venting.
8 5 6 7 4 C 1 Outdoor Reset Notes: D 2 3 Condensate piping shall be CPVC or PVC material and shall not be smaller than the drain connection on the appliance. Condensate must be disposed of according to local codes. Air eliminator should be located at least 12 inches away from the first bend on the supply. Reference the boiler installation manual for recommended glycol brands and mixed ratio. Reference vent section of the installation manual regarding venting.
8 5 6 7 4 2 3 1 Notes: D C Condensate piping shall be CPVC or PVC material and shall not be smaller than the drain connection on the appliance. Condensate must be disposed of according to local codes. Air eliminator should be located at least 12 inches away from the first bend on the supply. Reference the boiler installation manual for recommended glycol brands and mixed ratio. Reference vent section of the installation manual regarding venting. The maximum amperage for the boiler pump is 2 Amps.
8 5 6 7 Outdoor Reset Notes: D C Condensate piping shall be CPVC or PVC material and shall not be smaller than the drain connection on the appliance. Condensate must be disposed of according to local codes. Air eliminator should be located at least 12 inches away from the first bend on the supply. Reference the boiler installation manual for recommended glycol brands and mixed ratio. Reference vent section of the installation manual regarding venting.
8 Outdoor Reset Notes: D C 5 6 7 Condensate piping shall be CPVC or PVC material and shall not be smaller than the drain connection on the appliance. Condensate must be disposed of according to local codes. Air eliminator should be located at least 12 inches away from the first bend on the supply. Reference the boiler installation manual for recommended glycol brands and mixed ratio. Reference vent section of the installation manual regarding venting.
8 5 6 7 4 2 3 1 **FIELD SUPPLIED ZONE CONTROLLER** D Relay = 24 V AC DPDT Electrical Relay P1 = DHW Circulator (for indirect tank) Z1, Z2 = Zone Circulators T1, T2 = Thermostats (heat demand control) S1 = Outdoor Sensor S2 = Boiler Supply Sensor S3 = DHW Submersible Sensor (for DHW pump control) D 7.5A 7.5A 7.5A T/T1 Connection 7.
8 5 6 7 4 2 3 1 **FIELD SUPPLIED ZONE CONTROLLER** D Relay = 24 V AC DPDT Electrical Relay Z1, Z2, Z3 = Zone Cirulators T1, T2, T3 = Thermostats(heat demand control) S1 = Boiler Sensor S2 = Outdoor Sensor D 10A 10A 10A T/T1 Connection Do not apply power 1 2 3 5 4 Boiler Setpoint Demand Demand C 6 Power L 8 7 Boil N Pmp N 9 10 Stage 1 1 11 12 13 14 15 UnO Sw Com Boil 16 17 Stage 2 2 Out C Com Boiler 2 T1 RELAY T2 S1 Z1 RELAY S2 Z2 T3 T/T1 Connection RELA
8 5 6 7 4 2 3 1 **FIELD SUPPLIED ZONE CONTROLLER** D P1 = Primary Circulator for Space Heating S1 = Indoor Sensor S2 = Outdoor Sensor S3 = Boiler Supply Sensor D T/T1 Connection 7.5A 7.5A 7.5A 7.
8 5 6 7 4 2 3 1 **FIELD SUPPLIED ZONE CONTROLLER** D P1 = Primary Circulator for space heating P2 = DHW Circulator (for indirect tank) S1 = Indoor Sensor S2 = Outdoor Sensor S3 = Boiler Supply Sensor S4 = DHW Submersible Sensor (for DHW pump control) D T/T1 Connection 7.5A 7.5A 7.5A 7.
8 5 6 7 4 2 3 1 **FIELD SUPPLIED ZONE CONTROLLER** D Relay = 24 V AC DPDT Electrical Relay Z1 = Zone Cirulator T1 = Thermostat(heat demand control) S1 = Boiler Sensor S2 = Outdoor Sensor D 5A 5A 5A 5A 5A 5A 5A 5A Do not apply power 1 Com - C 5 2 3 4 Boil Boil Out Sup Ret + Un0 6 7 8 9 10 11 Mod1 mA Mod2 mA Mod3 mA Sw + - + - + - 12 Prim P1 13 14 15 16 Power C.A.
8 5 6 7 4 2 3 I-Series Boiler LEGEND Z DP D D Snow Melt/ Pool Heating Cast Iron Radiator Purge Station Balancing Valve C 1 Zone Valve Temperature Sensor Outdoor Reset Electric Water Heater Panel Radiator Radiant Floor Heating Return Manifold C Ball Valve Pressure Relief Valve Supply Manifold Boiler Drain Differential Pressure Bypass Heat Exchanger Air Vent Flot Type B 3 Way Mixing Valve Pump Isolation Flanges Check Valve Dirt Trap Thermostat Aquastat B P T Low Voltage
