” w.c. 4.6” w.c. 4.6” w.c. 4.6” w.c. BTU/HR INPUT 399,999 500,000 650,000 750,000 990,000 1,260,000 1,440,000 1,800,000 2,070,000 BTU/HR OUTPUT 339,999 425,000 552,500 637,500 841,500 1,071,000 1,224,000 1,530,000 1,759,500 ELECTRICAL VOLTAGE/HEATER 120 120 120 120 120 120 120 120 120 VOLTAGE/CONTROL 24 24 24 24 24 24 24 24 24 TOTAL AMPS 6.3 6.3 8.8 8.8 10.5 10.5 14.0 14.0 14.0 # OF ELECTRICAL CONNECTIONS 111111111 DIMENSIONS HEIGHT 31-1/2” 31-1/2” 31-1/2” 31-
RVICE CLEARANCES FRONT 24” 24” 24” 24” 30” 30” 30” 30” 30” BACK 1” 1” 1” 1” 3” 3” 3” 3” 3” RIGHT SIDE 1” 1” 1” 1” 3” 3” 3” 3” 3” LEFT SIDE (PIPING) 24” 24” 24” 24” 24” 24” 24” 24” 24” TOP 1” 1” 1” 1” 3” 3” 3” 3” 3” VENTING SIZE 6” 6” 8” 8” 10” 12” 12” 14” 14” VENT CATEGORY I I I I I I I I I VENT MATERIAL B-VENT B-VENT B-VENT B-VENT B-VENT B-VENT B-VENT B-VENT B-VENT MAXIMUM DRAFT -0.08” w.c. -0.08” w.c. -0.08” w.c. -0.08” w.c. -0.08” w.c. -0.08” w.c. -0.08” w.c. -0.08
8.8 8.8 10.5 10.5 14.0 14.0 14.0 # OF ELECTRICAL CONNECTIONS 111111111 DIMENSIONS HEIGHT 31-1/2” 31-1/2” 31-1/2” 31-1/2” 36” 36” 36” 36” 36” WIDTH 37-3/4” 45-1/2” 56-3/4” 64” 48-1/4” 58-1/2” 68-1/4” 82-1/4” /2 2- 9 DEPTH 22-1/4” 22-1/4” 22-1/4” 22-1/4” 33-1/2” 33-1/2” 33-1/2” 33-1/2” 33-1/2” SERVICE CLEARANCES FRONT 24” 24” 24” 24” 30” 30” 30” 30” 30” BACK 1” 1” 1” 1” 3” 3” 3” 3” 3” RIGHT SIDE 1” 1” 1” 1” 3” 3” 3” 3” 3” LEFT SIDE (PIPING) 24” 24” 24” 24” 24”
WATER FLOW RATE (GPM) 55 55 55 55 90 90 90 90 90 HEAD LOSS (FT. OF HD.) 6.4 6.5 6.7 6.8 5.8 6.6 7.2 8.4 9.2 MIN. WATER FLOW RATE (GPM) * 17 21 28 32 29 37 41 51 58 HEAD LOSS (FT. OF HD.) * 0.6 0.7 1.6 2.3 1.1 1.3 2.0 2.6 4.8 MAX. WORKING PRESSURE (PSI) 160 160 160 160 160 160 160 160 160 # OF RELIEF VALVES 1 1 1 1 1 1 2 2 2 RELIEF VALVE SIZE 1” 1” 1” 1” 1” 1” 1” 1” 1” RELIEF VALVE RATING (MBH) 1,352 1,352 1,352 1,352 1,352 1,352 1,352 1,352 1,352 RELIEF VALVE PRESSURE RATING (PSI) 50 50
FT.) 46.9 59.0 76.8 88.1 96.0 120.2 144.0 176.0 200.0 WATER CONNECTIONS 2” 2” 2” 2” 2-1/2” 2-1/2” 2-1/2” 2-1/2” 2-1/2” DRAIN 3/4” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4” MAX. WATER FLOW RATE (GPM) 55 55 55 55 90 90 90 90 90 HEAD LOSS (FT. OF HD.) 6.4 6.5 6.7 6.8 5.8 6.6 7.2 8.4 9.2 MIN. WATER FLOW RATE (GPM) * 17 21 28 32 29 37 41 51 58 HEAD LOSS (FT. OF HD.) * 0.6 0.7 1.6 2.3 1.1 1.3 2.0 2.6 4.8 MAX. WORKING PRESSURE (PSI) 160 160 160 160 160 160 160 160 160 # OF RELIEF VALVES 1 1 1 1 1
INLET PRESSURE, NAT 4.0” w.c. 4.0” w.c. 4.0” w.c. 4.0” w.c. 4.0” w.c. 4.0” w.c. 4.0” w.c. 4.0” w.c. 4.0” w.c. MANIFOLD PRESSURE, NAT 1.8” w.c. 1.8” w.c. 1.8” w.c. 1.8” w.c. 1.2” w.c. 1.2” w.c. 1.2” w.c. 1.2” w.c. 1.2” w.c. MAX. INLET PRESSURE, LP 13.0” w.c. 13.0” w.c. 13.0” w.c. 13.0” w.c. 13.0” w.c. 13.0” w.c. 13.0” w.c. 13.0” w.c. 13.0” 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. 8.0” w.c. 8.0” w.c. 8.0” w.c. 8.0” w.c. MANIFOLD PRESSURE, LP 4.6” w.c. 4.6”
” 12” 14” 14” VENT CATEGORY I I I I I I I I I VENT MATERIAL B-VENT B-VENT B-VENT B-VENT B-VENT B-VENT B-VENT B-VENT B-VENT MAXIMUM DRAFT -0.08” w.c. -0.08” w.c. -0.08” w.c. -0.08” w.c. -0.08” w.c. -0.08” w.c. -0.08” w.c. -0.08” w.c. -0.08” w.c. MINIMUM DRAFT -0.02” w.c. -0.02” w.c. -0.02” w.c. -0.02” w.c. -0.02” w.c. -0.02” w.c. -0.02” w.c. -0.02” w.c. -0.02” w.c. * Minimum flow rate and head loss are based on a 40°F temperature rise for CH401-751 models and based on a 60°F temperature rise
WATER FLOW RATE (GPM) 55 55 55 55 90 90 90 90 90 HEAD LOSS (FT. OF HD.) 6.4 6.5 6.7 6.8 5.8 6.6 7.2 8.4 9.2 MIN. WATER FLOW RATE (GPM) * 17 21 28 32 29 37 41 51 58 HEAD LOSS (FT. OF HD.) * 0.6 0.7 1.6 2.3 1.1 1.3 2.0 2.6 4.8 MAX. WORKING PRESSURE (PSI) 160 160 160 160 160 160 160 160 160 # OF RELIEF VALVES 1 1 1 1 1 1 2 2 2 RELIEF VALVE SIZE 1” 1” 1” 1” 1” 1” 1” 1” 1” RELIEF VALVE RATING (MBH) 1,352 1,352 1,352 1,352 1,352 1,352 1,352 1,352 1,352 RELIEF VALVE PRESSURE RATING (PSI) 50 50