Manuals+

Lochinvar AQUAS™ Product Summary

APX Series: 399,000 - 999,000 BTU/HR

Water Specifications

Parameter APX400 APX500 APX650 APX800 APX1000
Gallon Capacity 4.4 4.9 6.2 7.3 8.8
Heating Surface (sq. ft.) 34.80 39.10 52.20 60.90 75.40
20°F ΔT Water Flow (GPM) 38 48 62 76 96
Head Loss (ft. of hd.) 10.00 14.00 16.00 17.00 18.00
35°F ΔT Water Flow (GPM) 22 27 36 44 54
Head Loss (ft. of hd.) 4.00 8.00 7.00 9.00 6.00
Max. Working Pressure (PSI) 160 160 160 160 160
# of Relief Valves 1 1 1 1 1
Relief Valve Size 3/4" 3/4" 3/4" 3/4" 3/4"
Relief Valve Rating (MBH) 697 697 697 1352 1352
Relief Valve Pressure Rating (PSI) 50 50 50 50 50

Gas Specifications

Parameter APX400 APX500 APX650 APX800 APX1000
Inlet Connection 1" 1" 1-1/4" 1-1/4" 1-1/4"
Max. Inlet Pressure, NAT 14.0" w.c. 14.0" w.c. 14.0" w.c. 14.0" w.c. 14.0" w.c.
Min. Inlet Pressure, NAT 4.0" w.c. 4.0" w.c. 4.0" w.c. 4.0" w.c. 4.0" w.c.
Max. Inlet Pressure, LP 14.0" w.c. 14.0" w.c. 14.0" w.c. 14.0" w.c. 14.0" w.c.
Min. Inlet Pressure, LP 8.0" w.c. 8.0" w.c. 8.0" w.c. 8.0" w.c. 8.0" w.c.
BTU/HR Input 399,000 500,000 650,000 800,000 999,000
BTU/HR Output (High Fire) 387,030 485,000 630,500 776,000 969,030
BTU/HR Output (Low Fire) 38,703 48,500 63,050 77,600 96,903

Electrical Specifications (Boiler and Pump Only)

Parameter APX400 APX500 APX650 APX800 APX1000
Voltage/Heater 120 120 120 120 120
Voltage/Control 24 24 24 24 24
FLA 3.0 3.1 3.3 4.3 6.6
MCA 3.8 3.9 4.1 5.4 8.3

Dimensions

Parameter APX400 APX500 APX650 APX800 APX1000
Height 48.8" 48.8" 48.8" 48.8" 48.8"
Width 29.17" 29.17" 29.17" 32.63" 32.63"
Depth 63.11" 63.11" 73.61" 73.61" 81.28"

Service Clearances

Clearance APX400 APX500 APX650 APX800 APX1000
Front 24" 24" 24" 24" 24"
Rear 24" 24" 24" 24" 24"
Right Side 0" 0" 0" 0" 0"
Left Side 0" 0" 0" 0" 0"
Top 24" 24" 24" 24" 24"

Pool Heat Exchanger

Parameter APX400 APX500 APX650 APX800 APX1000
Recommended Pool Water Flow (GPM) 52 65 84 103 129
Connection Size 3" 3" 3" 3" 3"

Direct Venting

Parameter APX400 APX500 APX650 APX800 APX1000
Size 4" 4" 6" 6" 6"
Air Inlet Size 4" 4" 4" 4" 6"
Vent Category IV IV IV IV IV
Vent Material PVC/CPVC/PP/ AL29-4C PVC/CPVC/PP/ AL29-4C PVC/CPVC/PP/ AL29-4C PVC/CPVC/PP/ AL29-4C PVC/CPVC/PP/ AL29-4C

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