AHRI APEX, Installation, Operating And Service Instructions

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Appendix A - Figures
(continued)
Figure
Number
Page
Number Description
Section VII - Gas Piping
Figure 24 53 Recommended Gas Piping
Figure 25 54 Gas Inlet Pressure Tap and Pressure Switch Location
Section VIII - Electrical
Figure 26 57 Ladder Diagram
Figure 27 58 & 59 Wiring Connections Diagram
Figure 28A 60
Modified Wiring For DHW Priority When Using Low Flow Circulator Piped Off System Header -
Heating (with Central Heating Circulators) Plus Alternately Piped Indirect Water Heater
Figure 28B 61
Modified Wiring For DHW Priority When Using Low Flow Circulator Piped Off System Header -
Heating (with Central Heating Zone Valves) Plus Alternately Piped Indirect Water Heater
Figure 29 62
Multiple Boiler Wiring Diagram, Internal Sage2.1 Multiple Boiler Control Sequencer (Three Boilers
Shown, Typical Connections for up to Eight Boilers)
Figure 30A 63 Multiple Boiler Wiring Diagram w/Tekmar 265 Control
Figure 30B 64 Multiple Boiler Wiring Diagram w/Tekmar 264 Control
Figure 31 65 Recommended Direct Immersion Header Sensor Installation Detail
Figure 32 65 Alternate “Immersion” type Header Sensor Installation Detail
Figure 33 66 RJ45 Splitter Installation Detail
Section IX- System Start-Up
Figure 34 68 Operating Instructions
Figure 35 70 Burner Flame
Figure 36 70 Gas Valve Detail
Section X - Operation
Figure 37 81 Status Screens
Figure 38 82 Detail Screens
Figure 39 84 Adjust Mode Screens
Figure 40 93 Outdoor Reset Curve
Section XI - Service and Maintenance
Figure 41 98 Igniter Electrode Gap
Figure 42 99 Condensate Overflow Switch Orientation
Section XII - Troubleshooting
Figure 43 101 Help Menu
Section XIII - Repair Parts
N/A Pages 106 through 117