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Installation Instructions
Singular Combi Boiler - BTC 439003301 B (2021/07)
2.3 Specifi cations
The following table shows the specifi cations for the boiler. Additional specifi cations
about water, gas, electric, and air supplies (venting) appear in each installation
section.
Singular 4000 Singular 5200
Heat Capacity (Input)
Space Heating 19,900–80,000 BTU/H 19,900–140,000 BTU/H
Domestic Hot Water 19,900–155,000 BTU/H 19,900–199,000 BTU/H
Flow Rate (DHW)
45°F (25°C) Temp Rise 6.0GPM (23LPM) 7.7GPM (29LPM)
67°F (37°C) Temp Rise 4.0GPM (15LPM) 5.2GPM (20LPM)
AFUE Natural Gas (propane) 95.0% (95.0%) 95.0% (95.0%)
Dimensions (W x D x H) 18.1“ x 27.6” x 11.6“ (460 mm x 700 mm x 295 mm)
Installation Type Indoor wall-hung
Venting Type Forced draft direct vent
Ignition Electronic ignition
Water Pressure(Hydronic/DHW) 12~30psi /15~150 psi
Supply Pressure
Natural Gas 3.5" – 10.5" WC
Propane 8" – 13" WC
Temperature Range
Space Heating 82°F – 180°F(27°C – 82°C)
DHW 86°F – 140°F(31°C – 60°C)
Minimum Flow Rate (DHW) 0.5GPM(2.0LPM)
Power Supply Main Supply 120V AC, 60 Hz / uses less than 5 AMP
Connection Sizes
Space heating Supply/Return 1" NPT
Cold water Inlet 3/4" NPT
Hot Water Outlet 3/4" NPT
Gas Inlet 3/4" NPT
Materials
Primary Heat Exchanger Stainless steel
Secondary Heat Exchanger Stainless steel
Venting
Exhaust/Intake
"2"" or 3"" PVC, CPVC, Polypropylene
2"" or 3"" Special gas vent type BH (Class II, A/B/C)"
Length
2" 60ft(18.3m)
3" 150ft(45.7m)
Vent Clearances 0" to combustibles
Safety Devices
Flame rod, APS, Over heat preventer, Low water cut off switch,
Exhaust temperature high limit sensor, Power surge fuse
Table 2
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