TABLE OF CONTENTS
2
RECEIVING EQUIPMENT ........................................
3
MODEL IDENTIFICATION ........................... 3
GENERAL SPECIFICATIONS ....................... 3
GENERAL SAFETY PRECAUTIONS .............. 4
INSTALLATION INSTRUCTIONS ..............................
5
CLEARANCES .......................................... 6
SPECIFICATIONS AND DIMENSIONS ........... 7
OUTDOOR INSTALLATIONS ....................... 10
HIGH WIND CONDITIONS ........................... 10
COMBUSTION AIR .................................... 10
VENTING ................................................. 11
VENT PIPING ............................................ 14
VENT DAMPER INSTALLATION ................... 15
PLUMBING ...........................................................
17
GAS SUPPLY CONNECTIONS ..................... 17
GAS PRESSURE REGULATOR .................... 18
VENTING OF DIAPHRAGM GAS
COMPONENTS ......................................... 18
FLOW RATES ........................................... 19
UNITEMP 80 SPECIFICATIONS ................... 20
PIPING DIAGRAMS ................................................
21
TYPE WH UNITEMP 80 ............................... 21
TYPE NH INSTANTANEOUS ........................ 22
TYPE NH DUAL MODELS ............................ 23
CONTROLS ...........................................................
24
RELIEF VALVE .......................................... 24
ECONOMASTER CONTROL ........................ 24
ELECTRONIC IGNITION ............................. 24
OPERATING CONTROLS ............................ 24
LIMIT CONTROLS ..................................................
25
HIGH LIMIT ............................................... 25
FLOW SWITCH ......................................... 25
100% PILOT SAFETY ................................. 25
LOW WATER CUT-OFF .............................. 25
HIGH AND LOW GAS PRESSURE SWITCHES 25
COMPONENT IDENTIFICATION ...............................
26
ELECTRICAL CONNECTIONS ..................................
27
LOCATION OF CONTROLS .....................................
28
START-UP PROCEDURES ......................................
30
GENERAL ................................................ 30
PUMP AND MOTOR ................................... 30
GENERAL SAFETY PRECAUTIONS .............. 31
LIGHTING INSTRUCTIONS ......................... 32
AFTER START-UP ..................................... 33
INSPECTION PROCEDURES ...................................
33
BURNERS ................................................ 33
CONTROLS .............................................. 33
INSPECTION PROCEDURES ....................... 34
ADDENDA: LOW NOx HEATERS 181-401 ..................
35
TROUBLESHOOTING ELECTRICAL .........................
37
WIRING DIAGRAMS ...............................................
38
WH2 - 182-260 .......................................... 38
WH2 - 330-400 .......................................... 39
WH2 - 514-624 .......................................... 40
WH2 - 724-1336 ......................................... 41
WH2 - 1414-1826 ....................................... 42
WH2 - 2100-2500 ....................................... 43
WH2 - 3001-4001 ....................................... 44
WH1 - 181-261 LOW NOx ............................ 45
WH1 - 331-401 LOW NOx ............................ 46
TROUBLESHOOTING MECHANICAL ........................
47
TROUBLESHOOTING PUMPS ..................................
48
SERVICE AND MAINTENANCE PROCEDURES ...........
48
TUBE CLEANING ...................................... 48
BURNER TRAY REMOVAL .......................... 49
GAS VALVE REMOVAL ............................... 49
MAIN BURNER AND ORIFICE REMOVAL ...... 49
PILOT REMOVAL AND CLEANING ................ 49
HIGH LIMIT OR TANKSTAT REMOVAL .......... 49
HEAT EXHANGER REMOVAL ...................... 49
COMBUSTION CHAMBER REMOVAL ........... 50
CONTROL WELL REPLACEMENT ................ 50
TUBE REPLACEMENT ............................... 50
CLEANING FLUE GAS PASSAGEWAYS ........ 51
REPLACEMENT PARTS ..........................................
51
WARRANTY ..........................................................
52
Summary of Contents for 0133-4001 WH
Page 19: ...19 FLOW RATES...
Page 21: ...21 TYPE WH UNITEMP 80 SYSTEM PIPING DIAGRAMS...
Page 28: ...LOCATION OF CONTROLS 28 400 WH1 WH2 WH3 181 LOW NOx WH1 Fig 9360...
Page 29: ...29 Fig 9334 LOCATION OF CONTROLS...
Page 38: ...WIRING DIAGRAM WH2 182 260 38 WIRING DIAGRAMS...
Page 39: ...WIRING DIAGRAM WH2 330 400 39...
Page 40: ...40 WIRING DIAGRAM WH2 514 624...
Page 41: ...41 WIRING DIAGRAM WH2 724 1336...
Page 42: ...42 WIRING DIAGRAM WH2 1414 1826...
Page 43: ...43 WIRING DIAGRAM WH2 2100 2500...
Page 44: ...44 WIRING DIAGRAM WH2 3001 4001...
Page 45: ...WIRING DIAGRAM WH1 181 261 LOW NOx 45...