Burnham RTC (Return Temperature Control) Installation Manual

- Installation & Maintenance ManualRTC/Return Temperature ControlP/N 81460382 1 of 60 The Burnham Return Temperature Control (RTC) is designed t

10 of 60 Figure 3: V9A Series Boiler Recommended Minimum Piping - RTC With 3-Way Diverting Valve

11 of 60 Figure 4: V11 Series Boiler Recommended Minimum Piping - RTC With 3-Way Diverting Valve

12 of 60 Figure 5: Typical Burnham Boiler Loop w/3-Way Diverting Valve

13 of 60 Figure 6: Typical Burnham Boiler Loop w/4-Way Diverting Valve

14 of 60 On multiple boiler applications, each boiler is installed in the same arrangement as a single boiler application. Each boiler loop contain

15 of 60 Diverting Valve ActuatorTerminals 9, 10 and 11 are powered with 24 V (ac) from the control. There is no need to provide a separate 24 V (a

16 of 60 Boiler Enable ContactThe Boiler Enable terminals (7 and 8) are an isolated output in the control. There is no power available on the

17 of 60 131415BoilRetMixCom12ComFirst measure the temperature using the thermometer. Then measure the resistance of the sensor at the control.

18 of 60 Test the OutputsBoiler Recirculating Pump (Boil Pmp)The boiler recirculating pump is connected to the Boil Pmp terminal (5). Make

19 of 60 E. WWSD (Warm Weather Shut Down) – This feature is only used when the outdoor reset feature is selected. Set the WWSD as desired, keepin

2 of 60 How To Use This ManualUser InterfaceTesting the Control ...Pg 22Troubleshooting ...

20 of 60 Display DescriptionRangeView Menu (1 of 1)-67 to 149°F(-55 to 65°C)OUTDRCurrent outdoor air temperature as measured by the outdoor sensor.(

21 of 60 ActualSettingDisplay DescriptionRangeAdjust Menu (1 of 1)SectionCMIX DSGNThe design supply water temperature used in the heat los

22 of 60 When troubleshooting any heating system, it is always a good idea to establish a set routine to follow. By following a consistent rou

23 of 60 Isolate the problem between the control and the system. Now that the sequence of operation is known and the system is sketched, is the con

24 of 60 STRAPCTR relioB/ytQtraPrebmuNswercsgnitnuomdnarosnesreliobhtiw)CTR(lortnoCerutarepmeTnruteR 1 61906108.3598F560#ssofnaD,rotomdnoceS05,V42,M

25 of 60 STRAPCTR relioB/ytQtraPrebmuNswercsgnitnuomdnarosnesreliobhtiw)CTR(lortnoCerutarepmeTnruteR 1 61906108.3598F560#ssofnaD,rotomdnoceS05,V42,

26 of 60 Appendix A: Application DrawingsA1. 3-way RTC in Primary/Secondary - Heating Only/No DHW; with/without Outdoor Reset (Mechanical)NOTES:1) I

27 of 60 A1. 3-way RTC in Primary/Secondary - Heating Only/No DHW; with/without Outdoor Reset (Electrical)NOTES:1) Refer to the I&O to determin

28 of 60 A2. 3-way RTC in Primary/Secondary - Heating and DHW using Tankless Coil; with/without Outdoor Reset (Mechanical)120 V (ac)24

29 of 60 NOTES:1) Refer to the I&O to determine correct valve orientation and actuator wiring.2) 120 VAC supplying the RTC should be separate f

3 of 60 DisplaySymbol DescriptionDisplays thecurrentmenuDisplays an abbreviatedname of the selected itemDisplays the current valueof the selected i

30 of 60 A3. 3-way RTC in Primary/Secondary - Heating and DHW using Indirect Water Heater; with/without Outdoor Reset (Mechanical)120 V (ac)24 V (ac

31 of 60 A3. 3-way RTC in Primary/Secondary - Heating and DHW using Indirect Water Heater; with/without Outdoor Reset (Mechanical)NOTES:1) Refer to

32 of 60 A4. 3-way RTC in Primary/Secondary - Heating and DHW using Indirect Water Heater on Primary Loop; without Outdoor Reset (Mechanical)120 V (

33 of 60 A4. 3-way RTC in Primary/Secondary - Heating and DHW using Indirect Water Heater on Primary Loop; without Outdoor Reset (Electrical)NOTES:

34 of 60 A5. 4-way RTC in Primary/Secondary - Heating Only/No DHW; with/without Outdoor Reset (Mechanical)120 V (ac)24 V (ac)Class IITransformerRTCO

35 of 60 NOTES:1) Refer to the I&O to determine correct valve orientation and actuator wiring.2) 120 VAC supplying the RTC should be separate f

36 of 60 A6. 4-way RTC in Primary/Secondary - Heating and DHW using Tankless Coil; with/without Outdoor Reset (Mechanical)120 V (ac)24

37 of 60 NOTES:1) Refer to the I&O to determine correct valve orientation and actuator wiring.2) 120 VAC supplying the RTC should be separate f

38 of 60 A7. 4-way RTC in Primary/Secondary - Heating and DHW using Indirect Water Heater; with/without Outdoor Reset (Mechanical)120 V (ac)24 V (ac

39 of 60 A7. 4-way RTC in Primary/Secondary - Heating and DHW using Indirect Water Heater; with/without Outdoor Reset (Electrical)NOTES:1) Refer to

4 of 60 Section B: Control OperationHEAT DEMANDA heat demand is required in order for the control to provide heat by firing the boiler and opening t

40 of 60 A8. 4-way RTC in Primary/Secondary - Heating and DHW using Indirect Water Heater on Primary Loop; without Outdoor Reset (Mechanical)MZ1MZ2A

41 of 60 A8. 4-way RTC in Primary/Secondary - Heating and DHW using Indirect Water Heater on Primary Loop; without Outdoor Reset (Electrical)NOTES:

42 of 60 A9. 3-way Multiple Boiler RTC in Primary/Secondary - Heating and DHW using Indirect Water Heater on Primary Loop; Using Sequencer with &

43 of 60 A9. 3-way Multiple Boiler RTC in Primary/Secondary - Heating and DHW using Indirect Water Heater on Primary Loop; Using Sequencer with &am

44 of 60 A10. 4-way Multiple Boiler RTC in Primary/Secondary - Heating and DHW using Indirect Water Heater on Primary Loop; Using Sequencer with &am

45 of 60 A10. 4-way Multiple Boiler RTC in Primary/Secondary - Heating and DHW using Indirect Water Heater on Primary Loop; Using Sequencer with &a

46 of 60 Appendix B: Boiler Circulator and Diverting Valve Selection Charts)laitnereffiDF∞04(OCAT-noitceleSrotalucriCrelioB9VEZISRBISSORGTUPTUO)HBM(

47 of 60 )laitnereffiDF∞04(OCAT-noitceleSrotalucriCrelioB9VEZISRBISSORGTUPTUO)HBM(LATOTMPGepiPeziSnoitalucriceRrelioByaW-3noitalucriceRrelioByaW-4p

48 of 60 )laitnereffiDF∞02(ttessoGdnalleB-noitceleSrotalucriCrelioB9VEZISRBISSORGTUPTUO)HBM(LATOTMPGepiPeziSnoitalucriceRrelioByaW-3noitalucriceRrel

49 of 60 )laitnereffiDF∞02(gnortsmrA-noitceleSrotalucriCrelioB9VEZISRBISSORGTUPTUO)HBM(LATOTMPGepiPeziSnoitalucriceRrelioByaW-3noitalucriceRrelioBy

5 of 60 MIX TARGETWhen used as a mixing reset control, the MIX TARGET temperature is calculated from the reset ratio and outdoor air temperature. W

50 of 60 )laitnereffiDF∞02(OCAT-noitceleSrotalucriCrelioB11VEZISRBISSORGTUPTUO)HBM(LATOTMPGepiPeziSnoitalucriceRrelioByaW-3noitalucriceRrelioByaW-4p

51 of 60 )laitnereffiDF∞04(OCAT-noitceleSrotalucriCrelioB11VEZISRBISSORGTUPTUO)HBM(LATOTMPGepiPeziSnoitalucriceRrelioByaW-3noitalucriceRrelioByaW-4

52 of 60 )laitnereffiDF∞02(sofdnurG-noitceleSrotalucriCrelioB11VEZISRBISSORGTUPTUO)HBM(LATOTMPGeziSepiPnoitalucriceRrelioByaW-3noitalucriceRrelioBya

53 of 60 )laitnereffiDF∞04(sofdnurG-noitceleSrotalucriCrelioB11VEZISRBISSORGTUPTUO)HBM(LATOTMPGepiPeziSnoitalucriceRrelioByaW-3noitalucriceRrelioBy

54 of 60 )laitnereffiDF∞02(ttessoGdnalleB-noitceleSrotalucriCrelioB11VEZISRBISSORGTUPTUO)HBM(LATOTMPGepiPeziSnoitalucriceRrelioByaW-3noitalucriceRre

55 of 60 )laitnereffiDF∞04(ttessoGdnalleB-noitceleSrotalucriCrelioB11VEZISRBISSORGTUPTUO)HBM(LATOTMPGepiPeziSnoitalucriceRrelioByaW-3noitalucriceRr

56 of 60 )laitnereffiDF∞02(gnortsmrA-noitceleSrotalucriCrelioB11VEZISRBISSORGTUPTUO)HBM(LATOTMPGepiPeziSnoitalucriceRrelioByaW-3noitalucriceRrelioBy

57 of 60 )laitnereffiDF∞04(gnortsmrA-noitceleSrotalucriCrelioB11VEZISRBISSORGTUPTUO)HBM(LATOTMPGepiPeziSnoitalucriceRrelioByaW-3noitalucriceRrelioB

58 of 60 Appendix C: Valve and Actuator Mounting Instructions

59 of 60 RTC Return Temperature ControlLiterature — RTC Return Temperature Control manual.Control — Microprocessor PID control; This is not a s

6 of 60 SETPOINT OPERATION Mix TargetFor setpoint control, set the OUTDR DSGN to OFF. The mix target becomes the setpoint supply temperature that th

Burnham CommercialP.O. Box 3939Lancaster, PA. 17604-3939(888) 791-3790 Fax. (877) 501-5211 60 of 60© 2003 by tekmar Control Systems Ltd. All rights r

7 of 60 CautionImproper installation and operation of this control could result in damage to the equipment and possibly even personal injury. It is

8 of 60 Figure 1: Typical Boiler Wiring With RTC (Front)

9 of 60 Figure 2: Typical Boiler Wiring With RTC Return Sensor (Rear)