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

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6 TECHNICAL SPECIFICATIONS
Table 7 – Technical specifications
154 Lowboy Series
UNITS WITH 1.0 HP 4-SP. MOTOR UNITS WITH 1.0 HP ECM MOTOR
RATING AND PERFORMANCE
Firing rate(USGPH)* 0.90 1.10 0.90 1.10
Input (BTU/h)* 126,000 154,000 126,000 154,000
Heating temperature rise (Degr. F)* 55 - 75 Degr. F 60 - 72 Degr. F
Flue draft with chimney (inch of w.c.) -0.06 to -0.025 -0.06 to -0.025
Overfire pressure with chimney (inch of w.c.) -0.035 to +0.025 -0.035 to +0.025
Flue pressure with direct vent (inch of w.c. - no wind) +0.05 to +0.12 +0.05 to +0.12
Overfire pressure with direct vent (inch of w.c. - no wind) +0.06 to +0.16 +0.06 to +0.16
BECKETT BURNER; NX MODEL (Chimney or DV)/ Insertion NX50LC / 1 3/4” NX50LC / 1 3/4”
AHRI Model # AMT126SD-BNX AMT154SD-BNX AMT126SV-BNX AMT154SV-BNX
Maximum Heating capacity, (BTU/h)* 106,000 128,000 106,000 128,000
Head type 6 Slots - LC head 6 Slots - LC head
Nozzle (Delavan)** 0.75 - 60B 0.90 - 60B 0.75 - 60B 0.90 - 60B
Pump pressure (PSIG)* 145 150 145 150
Head/Air setting 2.5 3.25 2.5 3.25
AFUE % (From CSA B212 standard and Canadian regulation)*** 87.7% 86.7% ‡ 87.7% ‡ 86.7%
AFUE % (From ASHRAE 103 standard and US regulation)*** 86.6% 85.5% ‡ 86.6% ‡ 85.5%
RIELLO BURNER; 40-F5 MODEL (Chimney)/ Insertion F5 WITH AIR INLET DAMPER/ 2 3/4” F5 WITH AIR INLET DAMPER2 3/4”
AHRI Model # AMT126SD-RF AMT154SD-RF AMT126SV-RF AMT154SV-RF
Maximum Heating capacity, (BTU/h)* 106,000 128,000 106,000 128,000
Nozzle (Delavan)** 0.75 - 70A 0.90 - 70A 0.75 - 70A 0.90 - 70A
Pump pressure (PSIG)* 145 150 145 150
Combustion air adjustment (turbulator/damper) 1.5 / 2.25 2.5 / 2.75 1.5 / 2.25 2.5 / 2.75
AFUE % (From CSA B212 standard and Canadian regulation*** 87.6% 86.8% ‡ 87.6% ‡ 86.8%
AFUE % (From ASHRAE 103 standard and US regulation)*** 86.6% 85.8% ‡ 86.6% ‡ 85.8%
RIELLO BURNER; 40-BF5 MODEL (Direct vent DV)/ Insertion BF5 / 2 3/4” BF5 / 2 3/4”
AHRI 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)* 145 150 145 150
Combustion air adjustment (turbulator/damper) 1.0 / 3.75 3.0 / 4.25 1.0 / 3.75 3.0 / 4.25
AFUE % (From CSA B212 standard and Canadian regulation)*** 87.7% 86.1% ‡ 87.7% ‡ 86.1%
AFUE % (From ASHRAE 103 standard and US regulation)*** 87.5% 86.2% ‡ 87.5% ‡ 86.2%
ELECTRICAL SYSTEM
Volts - Hertz - Phase 115 - 60 - 1 115 - 60 - 1
Rated current (Amps) 16.9 15.7
Minimum ampacity for wire sizing (Amps) 19.5 18.1
Max. fuse size (Amps) 20 20
Control transformer(VA) 40 40
External control power available: Heating (VA) 40 40
External control power available: Cooling (VA) 30 30
BLOWER DATA
Heating blower speed at 0.25" W.C. SP MED-LOW MED-HIGH
See the ECM air flow table
Heating blower speed at 0.50" W.C. SP MED-LOW MED-HIGH
Motor (HP) / number of speeds 1 HP / 4 speeds 1 HP / ECM (with power choke)
Blower size (diam. x width) 12” x 10” (tight housing) 12” x 10” (tight housing)
GENERAL INFORMATION
Overall dimensions (width x depth x height) 24 3/4” x 52” x 39 1/4” 24 3/4” x 52” x 39 1/4”
Supply air opening (width x depth) 23 3/4” x 23 3/4” 23 3/4” x 23 3/4”
Return air opening (width x depth) 23 3/4” x 19 3/4” 23 3/4” x 19 3/4”
Filters size and quantity
20” x 24” x 1" or 2” (quantity=1) 20” x 24” x 1" or 2” (quantity=1)
16” x 24” x 1" (quantity=2) 16” x 24” x 1" (quantity=2)
Shipping weight Lbs/Kg 270 / 122.5 270 / 122.5
Air conditioning, maximum output (tons) at 0.5" W.C. SP 5.0 5.0
Note 1 : Without low firing baffle #5880
* INPUT AND OUTPUT ADJUSTMENT :
‡=
- Pump pressure can be adjusted to maintan proper firing rate
- Increase pump pressure if flue gases’ temperature is under 400°F
- Adjust the total flue gas temperature between 400°F and 575 °F (330°and 505°F net approx.)
- Adjust fan speed for air temperature rise to be in specified range
** Default installed nozzle in bold character.
*** AFUE value established after minimum 20 hours of operation.
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