PHYSICAL DATA ..................................................................................................................................................................... 4

QUALIFIED INSTALLER / SERVICE TECHNICIAN ......

USER ........................................................................................................................................................................................ 6

SAFETY INFORMATION ........................................................................................................................................................ 6

2 - INTRODUCTION ................................................................................................................................................................ 8

3 - COMPONENT LISTING - 1.48 GA .................................................................................................................................... 9

3 - COMPONENT LISTING - 60GA ...................................................................................................................................... 10

4 - LOCATING BOILER ......................................................................................................................................11

4.1 BOILER LOCATION CONSIDERATIONS ..........

4.2 CLEARANCES .......................................................................................................................................................... 12

4.3 WALL MOUNTING ..................................................................................................................................................... 13

5 - HYDRONIC PIPING ......................................................................................................................................................... 14

5.1 GENERAL ................................................................................................................................................................... 14

5.2 SPECIAL CONDITIONS ............................................................................................................................................ 15

5.3 SAFETY RELIEF VALVE ........................................................................................................................................... 15

5.4 TRIM PIPING.............................................................................................................................................................. 16

5.5 SYSTEM PIPING ....................................................................................................................................................... 16

5.6 EXTERNAL OPTIONAL LOW WATER CUT OFF

5.7 MANUFACTURER RECOMMENDATION - STRAINER

5.8 CENTRAL HEATING SYSTEM ................................................................................................................................. 19

5.9 DOMESTIC HOT WATER MODE ............................................................................................................................. 20

5.10 FROST PROTECTION MODE ................................................................................................................................ 20

5.11 PUMP PROTECTION .............................................................................................................................................. 20

6 - COMBUSTION AIR AND VENT PIPING ........................................................................................................................ 21

6.1 GENERAL ................................................................................................................................................................... 21

6.2 REMOVAL OF EXISTING BOILER FROM COMMON VENT SYSTEM

6.3 DEFINITIONS ............................................................................................................................................................. 22

6.4 APPROVED VENTING MATERIALS ....................................................................................................................... 23

6.5 VENT TERMINATION ................................................................................................................................................ 23

6.6 COAXIAL VENTING INSTRUCTIONS ..................................................................................................................... 24

6.7 COAXIAL VENT SCREW PLACEMENT - SEE FIGURE 6-6

6.8 TWIN PIPE SYSTEMS .............................................................................................................................................. 26

6.9 SECURING TWIN PIPE POLYPROPYLENE VENTING

6.10 FLEXIBLE VENT SYSTEM ................................................................................................................................... 30

6.11 CONDENSATE PIPING ........................................................................................................................................... 32

7 - GAS SUPPLY PIPING ...................................................................................................................................................... 33

7.1 GENERAL ................................................................................................................................................................... 33

7.2 LEAK CHECK GAS PIPING ...................................................................................................................................... 34

7.3 GAS ORIFICE - 9.0 MM ( NATURAL & LP)..............................................................................................................34

8 - ELECTRICAL CONNECTIONS ...................................................................................................................................... 35

8.1 GENERAL ................................................................................................................................................................... 35

8.2 INSTALL ROOM END SWITCH ................................................................................................................................ 35

8.3 ELECTRICAL CONNECTIONS ................................................................................................................................ 35

8.4 ACCESS TO CONNECTION BLOCK ....................................................................................................................... 36

8.5 MAIN SUPPLY CONNECTION ................................................................................................................................. 36

8.6 INSTALL ROOM END SWITCH ................................................................................................................................ 37

8.7 OPTIONAL ELECTRICAL CONNECTIONS ............................................................................................................ 37

8.8 INDIRECT STORAGE TANK ..................................................................................................................................... 38

8.9 MANAGEMENT OF 0-10V INPUT..............................................................................................................................38

WIRING DIAGRAM - MODEL 1.48 GA .......................................................................................................................... 39

WIRING DIAGRAM - MODEL 60 GA ............................................................................................................................. 40

9 START UP PROCEDURE .................................................................................................................................................. 41

9.1 SYSTEM DESIGN PRESSURE: (COLD) SHOULD BE SET TO (1.0-1.5) BAR......................................................41

9.2 CENTRAL HEATING SYSTEM CONNECTIONS.....................................................................................................41

9.3 SYSTEM START UP .................................................................................................................................................. 42

9.4 FILL CONDENSATE TRAP WITH WATER .................................................................................................. ............42

9.5 CONTROL PANEL ..................................................................................................................................................... 43

9.6 PRIOR TO COMMISSIONING: ................................................................................................................................. 44

9.7 COMMISSIONING FOR THE FIRST TIME: ............................................................................................................ .44

9.8 AUTOMATIC CALIBRATION FUNCTION ............................................................................................................... .44

9.9 MANUAL CALIBRATION FUNCTION: ..................................................................................................................... 45

9.6 COMMISSIONING ..................................................................................................................................................... 45

9.10 DE-AERATION FUNCTION..................................................................................................................................... 45

9.11 COMMISSION SET UP (GAS) - CHANGING THE TYPE OF GAS......................................................................45

9.12 CHIMNEY SWEEP FUNCTION (CO

9.13 COMBUSTION ADJUSTMENT FUNCTION (CO2%).............................................................................................46

240012485 REV C [06/30/2019]

ADJUST)......................................................................................................46