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Instructions 

1005101718 

ENVI & MCBA to NURO  

Date: 12/19/2017 

Revision A 

NURO Conversion Instructions 

MACH C1500V-C2000V 

 

 

 

 

 

 

If the information in these instructions are not followed, fire or explosion may result causing property damage, 

personal injury, or loss of life. 

 

It is essential to read, understand, and follow the recommendations of these instructions before installing, operating 

or servicing this equipment.  Failure to do so could result in personal injury or death. 

 

Installation and service must be performed by a qualified and knowledgeable individual who has been certified on the 

P-K MACH

®

 boiler.  The features which permit this boiler to achieve high-efficiency performance can be misused 

which could result in personal injury or death. 

 

Lockout/tagout procedure must be employed when servicing this unit.  Failure to do so could result in electrocution, 
injury, or death. 

 

Label all wires prior to disconnection when servicing controls.  Wiring errors can cause improper and dangerous 
operation.  

 

Use care when reassembling main gas line and ensure all connections are tight.  Use a leak detector to check for 
leaks before and after servicing any component of the gas piping.  Failure to do so could result in injury or death.  

 

Use care when servicing boiler to prevent the accumulation of gas in or around the combustion chamber.  Pockets of 
accumulated gas are subject to combustion and/or explosion which could result in injury or death.  

 

Installation must be in strict conformance to all applicable codes and standards including NFPA 54, ANSI Z223.1 and 
CAN/CSA B.149.  

 

Summary of Contents for HARSCO MACH C1500V

Page 1: ...ch if not avoided could result in death or serious injury NOTICE Each safety device must be maintained and checked per the recommended schedule Refer to Section 6 in the O M Manual for more informatio...

Page 2: ...n be misused which could result in personal injury or death Lockout tagout procedure must be employed when servicing this unit Failure to do so could result in electrocution injury or death Label all...

Page 3: ...al block covers Identify and label all current field wiring on boiler when disconnecting 4 Remove 7 16 nuts as required that hold top panel on as shown in Figure 1 Top panel will need to be lifted at...

Page 4: ...evision A NURO Conversion Instructions MACH C1500V C2000V 5 Using a 1 8 drill bit drill out rivets that fasten high and low voltage terminal blocks 6 Remove 7 16 nuts from 4 inside corners of front fr...

Page 5: ...1005101718 ENVI MCBA to NURO Date 12 19 2017 Revision A NURO Conversion Instructions MACH C1500V C2000V 7 Remove 3 T30 Torx screws from front frame as shown in Figure 3 Remove front frame Remove 7 16...

Page 6: ...12 19 2017 Revision A NURO Conversion Instructions MACH C1500V C2000V 8 With a T30 Torx bit loosen 3 screws that hold control panel in place shown in Figure 3 Figure 3 Loosen T30 Torx screws to contr...

Page 7: ...to wire colors for sensors as new panel will use same colors for sensor wires 9 Control panel can now be slid right lifted off screws and removed from boiler 10 Using a 1 2 wrench remove and replace...

Page 8: ...NURO Date 12 19 2017 Revision A NURO Conversion Instructions MACH C1500V C2000V 11 Install heat exchanger sensor on front section of exchanger Sensor only needs to be finger tight DO NOT OVERTIGHTEN S...

Page 9: ...ront of boiler using supplied T20 self tapping Torx screws 14 Run all internal wires to appropriate safety devices and sensors Types of Wires Colors Identification Return Temperature Sensor Wires Blue...

Page 10: ...R TUBE 16 Install tubing for air switch and blocked flue switch Blocked flue tube will need to be cut to length to ensure that there is not tube slack Tube should be pitched down from switch to conden...

Page 11: ...frame assembly with 4 7 16 nuts in each corner from inside of cabinet 18 Install 3 T30 Torx screws along bottom of front frame assembly 19 Install front door on hinge pins 20 Install NURO touch screen...

Page 12: ...ions MACH C1500V C2000V 21 Insert green electric plug D1 and D2 into NURO control and attach all ground wires to front door ground lug 22 Install field wiring to new terminal boxes per wiring terminal...

Page 13: ...vision A NURO Conversion Instructions MACH C1500V C2000V 24 Flame Rectification Signal Lead wire shown in Figure 12 will not be used Use cap supplied in kit to cover end of wire connection Figure 13 G...

Page 14: ...Instructions 1005101718 ENVI MCBA to NURO Date 12 19 2017 Revision A NURO Conversion Instructions MACH C1500V C2000V Figure 14 Figure 15 Heat Exchanger Sensor and Wires Blower Plugs...

Page 15: ...Instructions 1005101718 ENVI MCBA to NURO Date 12 19 2017 Revision A NURO Conversion Instructions MACH C1500V C2000V Figure 16 High Limit Probe Low Water Cut Off Figure 17...

Page 16: ...rols to boiler 570 421 7500 and press 2 for technical support 26 After pairing is complete with technical support re energize gas supply to unit 27 Perform Runout Procedure 28 Perform factory start up...

Page 17: ...urn off the boiler s circulating pump Isolate the boiler from the system Drain the water level below the low water cut off probe Turn the boiler back on It should not operate and a manual lockout rese...

Page 18: ...ownstream manual isolation valve then turn the boiler back on and reset the control 15 Test the air switch for proper operation Allow the boiler to start Remove the tube from the air switch after 30 s...

Page 19: ...Instructions 1005101718 ENVI MCBA to NURO Date 12 19 2017 Revision A NURO Conversion Instructions MACH C1500V C2000V...

Page 20: ...Instructions 1005101718 ENVI MCBA to NURO Date 12 19 2017 Revision A NURO Conversion Instructions MACH C1500V C2000V...

Page 21: ...Instructions 1005101718 ENVI MCBA to NURO Date 12 19 2017 Revision A NURO Conversion Instructions MACH C1500V C2000V...

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