Dettson AMT154SDMA, Installation Instructions And Owner'S Manual

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TABLE OF CONTENTS 

1 SAFETY 

REGULATIONS ..................................... 3 

1.1 

SAFETY LABELING AND WARNING SIGNS ...... 3 

1.2 IMPORTANT 

INFORMATION............................... 3 

1.3 DETECTION SYSTEMS ....................................... 3 
1.4 DANGER 

OF FREEZING ..................................... 3 

2 INSTALLATION .................................................... 4 
2.1 POSITIONING 

THE FURNACE............................ 4 

2.1.1 Installation 

in an enclosure.................................... 4 

2.2 ELECTRICAL SYSTEM ........................................ 4 
2.3 INSTALLATION 

OF THE THERMOSTAT ............ 4 

2.4 INSTALLATION 

OF THE BURNER ...................... 5 

2.4.1 Nozzles ................................................................. 5 
2.4.2 

Air and Turbulator Settings ................................... 5 

2.4.3 

Post purge delay adjustment................................. 5 

2.5 VENTING.............................................................. 5 
2.5.1 Masonry chimney.................................................. 5 
2.5.2 Factory 

Built Chimneys ......................................... 5 

2.5.3 Draft 

Regulator...................................................... 5 

2.5.4 Side-wall 

venting ................................................... 6 

2.6 

BLOCKED VENT SHUT-OFF DEVICE (BVSO) 
FOR CHIMNEY VENTING.................................... 6 

2.6.1 BVSO 

Performance Test ...................................... 6 

2.7 

COMBUSTION AIR SUPPLY AND VENTILATION

.............................................................................. 6 

2.7.1 Contaminated 

Combustion Air .............................. 6 

2.7.2 

Burner with Outdoor Combustion Air Kit ............... 6 

2.8 OIL 

TANK ............................................................. 6 

2.9 DUCTING ............................................................. 7 
2.9.1 Air 

filter.................................................................. 7 

2.10 

SUPPLY AIR ADJUSTMENT (4 SPEED MOTOR)7 

2.10.1  Supply air adjustment (ECM variable speed 

motors).................................................................. 8 

2.11 INSTALLATION 

OF ACCESSORIES.................... 8 

2.11.1 Humidifier (HUM) .................................................. 8 
2.11.2 Electronic 

air Cleaner (EAC) ................................. 8 

2.11.3 Air 

Conditioner 

(or Heat Pump)............................. 8 

2.11.4  Emergency Heating Mode – Variable Speed Motor 

(ECM) ................................................................... 8 

3 OPERATION......................................................... 9 
3.1 START-UP............................................................ 9 
3.2 

OPERATING SEQUENCE OIL HEATING MODE 9 

3.3 

CHECKS AND ADJUSTMENTS ........................... 9 

3.3.1 Purging 

the oil line ................................................ 9 

3.3.2 Pressure adjustment ............................................. 9 
3.3.3 Combustion Check................................................ 9 
3.3.4 Draft 

Regulator adjustment ................................... 9 

3.3.5 Overfire 

pressure test ......................................... 10 

3.3.6 Vent 

Temperature Test ....................................... 10 

3.3.7 

Supply air Temperature Rise Test ...................... 10 

3.3.8 Limit 

Control Check............................................. 10 

3.3.9 Restart 

after burner failure .................................. 10 

4 MAINTENANCE.................................................. 10 
4.1 

CLEANING THE HEAT EXCHANGER ............... 10 

4.2 

CLEANING THE BLOCKED VENT SHUT-OFF 
DEVICE (BVSO) ................................................. 11 

4.3 

CLEANING OF THE BURNER HEAD ................ 11 

4.4 REPLACING 

THE NOZZLE................................ 11 

4.5 REPLACING 

THE OIL FILTER........................... 11 

4.6 REPLACING 

THE AIR FILTER........................... 11 

5 FURNACE 

INFORMATION ................................ 12 

INDEX OF TABLES 

Table 1: 

Blower speed adjustments (heating mode, 4 
speed motor)....................................................7 

Table 2: 

Blower speed adjustments (A/C mode, 4 speed 
motor) ..............................................................7 

Table 3: 

Heating Mode ..................................................8 

Table 4: 

Air Conditioning Mode......................................8 

Table 5: 

CFM adjustment - All Modes............................8 

Table 6: 

Delay adjustments - Heating Mode ..................8 

Table 7: 

Technical Specifications ................................13 

Table 8: 

Airflow Data, Models with 1.0 HP variable 
speed (ECM) motors......................................14 

Table 9: 

Airflow Data, Models with 1.0 HP 4 speed 
motors............................................................15 

Table 10:  Minimum clearances from combustible material

 15 

Table 11:  Parts List - With 4 Speed motor PSC.............20 
Table 12:  Parts List - With variable speed motor ECM ..22 
 

INDEX OF FIGURES

 
Figure 1: 

Location and dimensions of ventilation air 
openings in a closet door ..............................4 

Figure 2: 

Heating & Air Conditioning - With 4 Speed 
Motor.............................................................4 

Figure 3: 

Thermostat Wiring- Heating & Air 
Conditioning - With ECM Variable Speed 
Motor.............................................................5 

Figure 4: 

Thermostat Wiring-Heating &Air 
Conditioning/HeatPump - With ECM Variable 
Speed Motor .................................................5 

Figure 5: 

Blower "OFF" delay - Board #ST9103A ........7 

Figure 6: 

Blower start / stop delays - Board #1158.......7 

Figure 7: 

Furnace Dimensions ...................................16 

Figure 8: 

Wiring Diagram - 4 Speed Motor (PSC) ......17 

Figure 9: 

Wiring Diagram - Variable Speed Motor 
(ECM)..........................................................18 

Figure 10: 

Parts List - With 4 Speed motor PSC..........19 

Figure 11: 

Parts List - With variable speed motor ECM21