- Application Boiler Control 260

Transcription

1 - Application Control A -1 03/09 echanical Outdoor Sensor (S2) V (ac) 24 V (ac) T3 T2 T1 Sensor (S1) 082 Electrical = Pump S1 = Sensor 082 S2 = Outdoor Sensor 070 T1,..., T3 = Thermostats U1 = tekmar Timer 033 (optional),..., = Zone Valve otor End Switches Power Boil Demand Demand L N N Pmp/Vlv Do not apply power UnO Com Sw Boil Out Com Indr Valve Advanced Priority during UnOcc U1 S1 S2 Installer Pump Zone Valve otor End Switches = Required = Optional = Not Used 120 V (ac) L N 24 V (ac) C R Note: This is only a concept drawing. The designer must determine whether this application will work in his system and must ensure compliance with code requirements. Necessary auxiliary equipment, isolation relays (for loads greater than the specified tekmar internal relay ratings), and other safety and limit devices must be added. 1 of 8 Copyright 2009 A -1 03/09

2 System Operation A -1 03/09 The Control provides partial or full outdoor reset to three (or more) boiler zones. The boiler is operated at the temperature required in order to satisfy the load. Heat Source Details The heat source can be either a high mass or low mass non-condensing or low temperature boiler. Piping Details Thermostat controlled zone valves are piped into the boiler loop. The boiler pump () provides circulation through these zones when heat is required. Demand When heat is required in the boiler zones, the zone valve end switches send a Demand to the. The turns on the boiler pump (). The boiler supply water temperature is based on the Characterized Heating Curve settings. The boiler is fired to satisfy the required boiler supply water temperature. Whenever the boiler is fired, the aims to increase the boiler supply water temperature to at least the BOIL IN setting. All control functions and specifications are listed in the Product Catalog I 000 and Data Brochure D. Control Systems tekmar Control Systems Ltd., Canada tekmar Control Systems, Inc., U.S.A. Head ice: 5100 Silver Star Road Vernon, B.C. Canada V1B 3K4 Tel. (250) Fax. (250) Web Site: Product design, software and literature are Copyright 2009 by: tekmar Control Systems Ltd. and tekmar Control Systems, Inc. 2 of 8 All specifications are subject to change without notice. Printed in Canada. A -1 03/09.

3 - Application Control A -2 03/09 echanical Outdoor Sensor (S2) V (ac) 24 V (ac) T3 T2 T1 V1 Tank Sensor (S1) 082 Electrical = Aquastat = High Limit Aquastat = Pump S1 = Sensor 082 S2 = Outdoor Sensor 070 T1,..., T3 = Thermostats U1 = tekmar Timer 033 (optional) V1 = Valve,..., = Zone Valve otor End Switches Power Boil Demand Demand L N N Pmp/Vlv Do not apply power S UnOCom Sw Boil Out Com Indr Valve Advanced Priority during UnOcc U1 S2 Installer Pump = Required Zone Valve otor End Switches V1 = Optional = Not Used 120 V (ac) L N 24 V (ac) C R Note: This is only a concept drawing. The designer must determine whether this application will work in his system and must ensure compliance with code requirements. Necessary auxiliary equipment, isolation relays (for loads greater than the specified tekmar internal relay ratings), and other safety and limit devices must be added. 3 of 8 Copyright 2009 A -2 03/09

4 System Operation A -2 03/09 The Control provides partial outdoor reset to three (or more) boiler zones. The also controls the supply of heat to an indirect fired Domestic Hot Water () tank. The boiler is operated at the temperature required in order to satisfy the loads. Heat Source Details The heat source can be either a high mass or low mass non-condensing boiler. Piping Details Thermostat controlled zone valves are piped into the boiler loop. The boiler pump () provides circulation through these zones when heat is required. Heat is supplied to the tank through a valve (V1). Demand When the aquastat () calls for heat, the turns on the boiler pump (), opens the valve (V1), and raises the boiler water temperature to at least 180 F (82 C). Demand When heat is required in the boiler zones, the zone valve end switches send a Demand to the. The turns on the boiler pump (). The boiler supply water temperature is based on the Characterized Heating Curve settings. The boiler is fired to satisfy the required boiler supply water temperature. Whenever the boiler is fired, the aims to increase the boiler supply water temperature to at least the BOIL IN setting. All control functions and specifications are listed in the Product Catalog I 000 and Data Brochure D. Control Systems tekmar Control Systems Ltd., Canada tekmar Control Systems, Inc., U.S.A. Head ice: 5100 Silver Star Road Vernon, B.C. Canada V1B 3K4 Tel. (250) Fax. (250) Web Site: Product design, software and literature are Copyright 2009 by: tekmar Control Systems Ltd. and tekmar Control Systems, Inc. 4 of 8 All specifications are subject to change without notice. Printed in Canada. A -2 03/09.

5 - Application Control A -3 03/09 echanical Outdoor Sensor (S2) V (ac) 24 V (ac) T3 T2 T1 P2 Tank Sensor (S1) 082 Electrical = Aquastat = High Limit Aquastat = Pump P2 = Pump S1 = Sensor 082 S2 = Outdoor Sensor 070 T1,..., T3 = Thermostats U1 = tekmar Timer 033 (optional),..., = Zone Valve otor End Switches Valve Advanced Priority during UnOcc Power Boil Demand Demand L N N Pmp/Vlv Do not apply power UnOCom Sw U1 Boil Out Com Indr S1 S2 Installer Pump = Required Zone Valve otor End Switches P2 = Optional = Not Used 120 V (ac) L N 24 V (ac) C R Note: This is only a concept drawing. The designer must determine whether this application will work in his system and must ensure compliance with code requirements. Necessary auxiliary equipment, isolation relays (for loads greater than the specified tekmar internal relay ratings), and other safety and limit devices must be added. 5 of 8 Copyright 2009 A -3 03/09

6 System Operation A -3 03/09 The Control provides partial or full reset to three (or more) boiler zones. The also controls the supply of heat to an indirect fired Domestic Hot Water () tank. The boiler is operated at the temperature required in order to satisfy the loads. Heat Source Details The heat source can be either a high mass or low mass non-condensing or low temperature boiler. If using a low temperature boiler, refer to section C3 of the Data Brochure for additional information. Piping Details Thermostat controlled zone valves are piped into the boiler loop. The boiler pump () provides circulation through these zones when heat is required. Heat is supplied to the tank through a pump (P2). Demand When the aquastat () calls for heat, the turns on the pump (P2) and raises the boiler water temperature to at least 180 F (82 C). The control can provide priority (refer to section C2 of the Data Brochure) by turning off the boiler pump (). Once the demand is removed, the performs a Post Purge and possibly a ixing Purge. Demand When heat is required in the boiler zones, the zone valve end switches send a Demand to the. The turns on the boiler pump (). The boiler supply water temperature is based on the Characterized Heating Curve settings. The boiler is fired to satisfy the required boiler supply water temperature. Whenever the boiler is fired, the aims to increase the boiler supply water temperature to at least the BOIL IN setting. All control functions and specifications are listed in the Product Catalog I 000 and Data Brochure D. Control Systems tekmar Control Systems Ltd., Canada tekmar Control Systems, Inc., U.S.A. Head ice: 5100 Silver Star Road Vernon, B.C. Canada V1B 3K4 Tel. (250) Fax. (250) Web Site: Product design, software and literature are Copyright 2009 by: All specifications are subject to change without notice. 6 of 8 tekmar Control Systems Ltd. and tekmar Control Systems, Inc. Printed in Canada. A -3 03/09.

7 - Application Control A -4 03/09 echanical Outdoor Sensor (S2) V (ac) 24 V (ac) R1 R2 R3 T1 T2 T3 Tank Sensor (S1) 082 Electrical = Aquastat = High Limit Aquastat = Pump R1,..., R3 = Relay 003 S1 = Sensor 082 S2 = Outdoor Sensor 070 T1,..., T3 = Thermostats U1 = tekmar Timer 033 (optional),..., = Zone Pumps Valve Advanced Installer Pump = Required = Optional = Not Used Priority Return during UnOcc 120 V (ac) L N 24 V (ac) C R T1 T2 T R1 R2 R Power Boil Demand Demand L N N Pmp/Vlv Do not apply power UnOCom Sw U1 Boil Out Com Indr S1 S2 Note: This is only a concept drawing. The designer must determine whether this application will work in his system and must ensure compliance with code requirements. Necessary auxiliary equipment, isolation relays (for loads greater than the specified tekmar internal relay ratings), and other safety and limit devices must be added. 7 of 8 Copyright 2009 A -4 03/09

8 System Operation A -4 03/09 The Control provides partial or full reset to three (or more) boiler zones. The also controls the supply of heat to an indirect fired Domestic Hot Water () tank. The boiler is operated at the required temperature in order to satisfy the loads. Heat Source Details The heat source can be either a high mass or low mass non-condensing or low temperature boiler. If using a low temperature boiler, refer to section C3 of the Data Brochure for additional information. Piping Details Thermostat controlled zone pumps are piped into the boiler loop. Heat is supplied to the tank through a pump (). Demand When the aquastat () calls for heat, the turns on the pump () and raises the boiler water temperature to at least 180 F (82 C). The control can provide priority (refer to section C2 of the Data Brochure) by turning off the Boil contact and not allowing any of the boiler zones to operate. Once the demand is removed, the performs a Post Purge and possibly a ixing Purge. Demand When heat is required in the boiler zones, the zone pump relays send a Demand to the. The boiler supply water temperature is based on the Characterized Heating Curve settings. The boiler is fired to satisfy the required boiler supply water temperature. Whenever the boiler is fired, the aims to increase the boiler supply water temperature to at least the BOIL IN setting. All control functions and specifications are listed in the Product Catalog I 000 and Data Brochure D. Control Systems tekmar Control Systems Ltd., Canada tekmar Control Systems, Inc., U.S.A. Head ice: 5100 Silver Star Road Vernon, B.C. Canada V1B 3K4 Tel. (250) Fax. (250) Web Site: Product design, software and literature are Copyright 2009 by: All specifications are subject to change without notice. 8 of 8 tekmar Control Systems Ltd. and tekmar Control Systems, Inc. Printed in Canada. A -4 03/09.