Instructions
1005101718
ENVI & MCBA to NURO
Date: 12/19/2017
Revision A
NURO Conversion Instructions
MACH C1500V-C2000V
12. Install new control panel in place of old one and tighten down T30 Torx bit screws.
13. Install both electrical boxes facing front 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/Gray
Supply Temperature Sensor Wires
Red/Gray
Flue Temperature Sensor Wires
Yellow/Gray
Heat Exchanger Sensor Wires
Orange/Gray
Please refer to wiring diagram for any other connections. Ensure all wiring matches
supplied wiring diagram.
Figure 7
