Service manual

Table of Contents
1 GENERAL INFORMATION ................................................................................................................................. 1
2 LOCATION ....................................................................................................................................................... 1
3 AIR REQUIRED FOR COMBUSTION AND VENTILATION ..................................................................................... 2
4 ELECTRICAL WIRING ........................................................................................................................................ 3
5 NORMAL GAS SUPPLY ..................................................................................................................................... 3
6 VENTING ........................................................................................................................................................ 4
6.1 OUTDOOR VENTING ........................................................................................................................................ 5
6.2 STANDARD VENTING ....................................................................................................................................... 6
6.3 SIDEWALL AND VERTICAL VENTING ................................................................................................................. 6
6.6 OUTDOOR AIR KIT ........................................................................................................................................... 6
6.5 FILTER KIT ....................................................................................................................................................... 6
7 WATER PIPING ................................................................................................................................................ 7
7.1 PROTECTION DEVICES ..................................................................................................................................... 8
7.2 FREEZE PROTECTION ...................................................................................................................................... 9
7.3 CHILLED WATER SYSTEMS .............................................................................................................................. 9
7.4 HEATING SYSTEM PIPING ............................................................................................................................... 9
7.5 LOW WATER TEMPERATURE SYSTEMS ......................................................................................................... 10
7.6 INSTANTANEOUS WATER HEATER ................................................................................................................. 10
7.7 HOT WATER SYSTEM PIPING......................................................................................................................... 10
7.8 CONDENSER HEAT RECOVERY MODULE (CHRM) ........................................................................................... 10
7.9 PIPING........................................................................................................................................................... 11
7.9.1 Parallel Piping ............................................................................................................................................... 12
7.9.2 Primary / Secondary Piping ........................................................................................................................... 12
8 INSTRUMENTATION AND CONTROLS ............................................................................................................. 15
8.1 SAFETY CONTROLS ........................................................................................................................................ 15
8.2 CONTROL PANEL ........................................................................................................................................... 15
8.3 SETTING THE APPLIANCE TEMPERATURE CONTROLLER ................................................................................. 16
8.4 MODES OF OPERATION ................................................................................................................................. 16
8.5 Typical Factory Settings of Parameters for MicoFlame Grande BTC 1 (78-0017) ............................................. 21
9 MICOFLAME GRANDE CONTROL PANEL ......................................................................................................... 22
9.1 GENERAL SYMBOL DESCRIPTION ................................................................................................................... 22
9.2 MODE 1 & 2: SETPOINT OPERATION: VIEW DISPLAY ...................................................................................... 23
9.3 MODE 1 & 2: SETPOINT OPERATION: ADJUST DISPLAY .................................................................................. 24
9.4 MODE 3: DEDICATED DOMESTIC HOT WATER OPERATION: VIEW DISPLAY .................................................... 25
9.5 MODE 3: DEDICATED DOMESTIC HOT WATER OPERATION: ADJUST DISPLAY ................................................. 26
9.6 MODE 4 & 5: OUTDOOR RESET OPERATION: VIEW DISPLAY .......................................................................... 27
9.7 MODE 4 & 5: OUTDOOR RESET OPERATION: ADJUST DISPLAY ....................................................................... 28
9.8 MODE 6 & 7: EXTERNAL TARGET TEMPERATURE INPUT OPERATION: VIEW DISPLAY ..................................... 29
9.9 MODE 6 & 7: EXTERNAL TARGET TEMPERATURE INPUT OPERATION: ADJUST DISPLAY .................................. 30
9.10 MODE 8: EXTERNAL DRIVE OPEATION: VIEW DISPLAY ................................................................................... 31
9.11 MODE 8: EXTERNAL DRIVE OPEATION: ADJUST DISPLAY ................................................................................ 32
9.12 ERROR MESSAGES ......................................................................................................................................... 32
10 OPERATION ................................................................................................................................................... 34
10.1 START-UP ..................................................................................................................................................... 34
10.2 MODULATION SEQUENCE ............................................................................................................................. 35
11 PILOT AND MAIN BURNER FLAMES ............................................................................................................... 36