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Dettson Lowboy 154 Series, Installation Instructions And Homeowner'S Manual

The Dettson Lowboy 154 Series is a reliable and efficient heating solution for your home. Ensure proper installation and maintenance by downloading the Installation Instructions And Homeowner's Manual. This manual is available for free download from our website, providing you with all the information you need to keep your system running smoothly.

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Table 2 – Blower speed adjustments, 4-speed motor

A/C CAPACITY (TONS)

RECOMMENDED
BLOWER SPEED

3.0

LOW

3.5

MED-LOW

4.0

MED-HIGH

4.5

HIGH

11

Summary of Contents for Lowboy 154 Series

Page 1: ...Call a qualified service technician USE THE INFORMATION IN THIS MANUAL FOR THE IN STALLATION AND SERVICING OF THE FURNACE AND KEEP THE DOCUMENT NEAR THE UNIT FOR FUTURE REFERENCE HOMEOWNER Manufactur...

Page 2: ...Factory built chimneys 8 2 5 3 Draft regulator 8 2 5 4 Side wall venting 8 2 6 BLOCKED VENT SHUT OFF DEVICE BVSO FOR CHIMNEY VENTING 8 2 6 1 BVSO Functional Test 8 2 7 COMBUSTION AIR SUPPLY AND VENTI...

Page 3: ...THE OIL FILTER 16 4 6 CHANGING THE AIR FILTER 16 5 FURNACE INFORMATION 17 6 TECHNICAL SPECIFICATIONS 18 List of figures Figure 1 Location and dimensions of ventilation air openings in a closet door 6...

Page 4: ...itioning mode 12 Table 5 Airflow adjustments All modes 12 Table 6 Delay adjustments Heating mode 12 Table 7 Technical specifications 18 Table 8 Airflow data models with 1 0 HP ECM motor 19 Table 9 Air...

Page 5: ...oline or any other flammable sub stances such as paper or carton near the furnace d Do not stack items or boxing within the required clearances to combustible materials specified in Ta ble 10 e This f...

Page 6: ...codes shall be used 2 1 POSITIONING THE FURNACE WARNING FIRE AND EXPLOSION HAZARD The furnace must be installed in a level position never where it will slope toward the front Do not store or use gasol...

Page 7: ...separate line voltage supply should be used with fused disconnect switch or circuit breaker between the main power panel and the unit Only copper wire may be used for the 115V circuit on this unit If...

Page 8: ...rational final adjustments will be required Refer to the section 3 of this manual 2 4 3 Post purge delay adjustment The post purge delay on the oil fired burners is factory set to zero second This del...

Page 9: ...also essential that the BVSO be maintained annually For more details refer to the instructions supplied with the device itself as well as in section 4 of this Manual 2 6 1 BVSO Functional Test The pu...

Page 10: ...located This is a requirement in order for the heat exchanger warranty to remain in force Check your local codes for the installation of the oil tank and accessories At the beginning of each heating s...

Page 11: ...d of the unit and consult the wiring dia grams If the heating and air conditioning speeds are the same the RED wire must be moved to UNUSED LEADS on the electronic board and the jumper provided with t...

Page 12: ...Table 2 Blower speed adjustments 4 speed motor A C CAPACITY TONS RECOMMENDED BLOWER SPEED 3 0 LOW 3 5 MED LOW 4 0 MED HIGH 4 5 HIGH 11...

Page 13: ...e 6 Delay adjustments Heating mode SW4 Delay INPUT DIP Switch Positions USGPH 1 2 POSITION OFF OFF A 0 90 ON OFF B 1 10 OFF ON C 1 10 ON ON D N A Alternate adjustments for both input rate refer to air...

Page 14: ...o the EAC terminal This one is working as long as heating or cooling is requested and the blower will work until a new ECM motor is installed CAUTION We recommend to use this mode only for a short pe...

Page 15: ...ole For installation using a sidewall venting use the orifice provided on the breech plate 2 From a cold start let the unit operate for about 5 minutes 3 Set the burner air setting until you have betw...

Page 16: ...rol relay 3 Set the thermostat higher than room temperature 4 If the burner motor does not start or ignition fails turn off the disconnect switch and CALL A QUALI FIED SERVICE TECHNICIAN CAUTION Do no...

Page 17: ...nlock it from the heat transfer tube assembly 5 Carefully remove any build up from the thermal switch surface CAUTION Do not dent or scratch the surface of the thermal switch If the thermal switch is...

Page 18: ...e telephone Day Night Dealer name and address START UP RESULTS Nozzle Pressure lb po2 Burner adjustments Primary air Fine air Drawer Assembly CO2 Smoke scale Bacharach Gross stack temperature F Ambien...

Page 19: ...Model AMT126SD RBF AMT154SD RBF AMT126SV RBF AMT154SV RBF Maximum Heating capacity BTU h 107 000 129 000 107 000 129 000 Nozzle Delavan 0 75 70A 0 90 70A 0 75 70A 0 90 70A Pump pressure PSIG 145 150...

Page 20: ...40 C 1 OFF 2 ON 3 5 1400 1540 1260 D 1 ON 2 ON 3 0 1200 1320 1080 In cooling Dehumidification mode with no 24 VAC input to DH the CFMs are reduced by 15 The CFMs shown are reduced by 20 if there is 24...

Page 21: ...1140 1125 1110 1100 1085 1060 Table 10 Minimum clearances from combustible materials LOCATION CLEARANCES RECOMMENDED ACCESS FOR SERVICE SIDES FURNACE 2 54 cm 1 0 6 m 24 PLENUM AND WARM AIR DUCT WITHIN...

Page 22: ...Figure 7 Furnace Dimensions 21...

Page 23: ...Figure 8 Wiring diagram 4 speed motor PSC 22...

Page 24: ...Figure 9 Wiring diagram variable speed motor ECM 23...

Page 25: ...Figure 10 Parts list with 4 speed motor PSC 24...

Page 26: ...LECTRICAL BOX Panel only 32 B03118 01 ELECTRICAL KIT BVSO EXT 33 F06F015 WASHER ZINC 1 7 16 34 Z99F061 OBSERVATION PORT 35 Z06G001 BLOCKED VENT SHUT OFFBVSO 225 A 36 B03675 SMOKE OUTLET GASKET 37 B037...

Page 27: ...Figure 11 Parts list with variable speed motor ECM 26...

Page 28: ...GH LIMITL195 20F 7 00 31 B03743 COVER ELECTRICAL BOX Panel only 32 B03118 01 ELECTRICAL KIT BVSO EXT 33 F06F015 WASHER ZINC 1 7 16 34 Z99F061 OBSERVATION PORT 35 Z06G001 BLOCKED VENT SHUT OFFBVSO 225...

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