Submittal Sheet

Laars Heating Systems Company reserves the right to change specications, components, features, or to discontinue products without notice.
Customer Service and Product Support: 800.900.9276 • Fax [phone]
Headquarters: 20 Industrial Way, Rochester, NH 03867 • 603.335.6300 • Fax [phone]
1869SismetRoad,Mississauga,Ontario,CanadaL4W1W8•905.238.0100•Fax905.366.0130
www.Laars.com Litho in U.S.A. © Laars Heating Systems 1508 Document 1299C
Clearances
APPLIANCE SUGGESTED SERVICE ACCESS CLEARANCE
SURFACE
INCHES CM
Left Side
6 15
Right Side
6 15
Top
12 30
Closet, Front
6 15
Front
24 61
Bottom
24 61
Vent
1 3
CertiedbyCSAforzeroclearanceto
combustible materials on all sides.
APPLIANCE SUGGESTED SERVICE ACCESS CLEARANCE
SURFACE INCHES CM
Left Side 6 15
Right Side 6 15
Top 12 30
Closet, Front 6 15
Front 24 61
Vent 1 3
CertiedbyCSAforzeroclearanceto
combustible materials on all sides.
Clearances
Wall Floor
Sizing Data WALL
Sizing Data FLOOR STANDING
Sizing Data,
Piping
Input Output DHW AFUE Gas Water DHW Shipping
Model Output @ Conn. Size Conn. Size Conn. Size Weight
BTU/h kW BTU/h kW 75°F Rise inches inches inches lbs kg
MLX 50 50,000 14.6 47,500 13.2 - 95% 1/2” NPT 3/4” NPT - 88 40
MLX 75 75,000 21.9 71,250 20.8 - 95% 1/2” NPT 3/4” NPT - 97 44
MLX 100 100,000 29.3 95,000 27.8 - 95% 1/2” NPT 3/4” NPT - 112 51
MLX 125 125,000 36.6 118,750 34.8 3.1 gpm 95% 1/2” NPT 3/4” NPT 1/2” NPT 126 57
MLX 150 150,000 43.9 142,500 41.8 3.7 gpm 95% 1/2” NPT 1“ NPT 1/2” NPT 140 64
MLX 175 175,000 51.6 166,250 48.7 4.3 gpm 95% 1/2” NPT 1“ NPT 1/2” NPT 153 69
MLX 220 220,000 64.4 209,000 61.2 - 95% 1/2” NPT 1“ NPT - 161 73
Input Output DHW AFUE Gas Water DHW Shipping
Model Output @ Conn. Size Conn. Size Conn. Size Weight
BTU/h kW BTU/h kW 75°F Rise inches inches inches lbs kg
MLX 50 50,000 14.6 47,500 13.2 - 95% 1/2” NPT 3/4” NPT - 144 65
MLX 75 75,000 21.9 71,250 20.8 - 95% 1/2” NPT 3/4” NPT - 151 68
MLX 100 100,000 29.3 95,000 27.8 - 95% 1/2” NPT 3/4” NPT - 166 75
MLX 125 125,000 36.6 118,750 34.8 3.1 gpm 95% 1/2” NPT 3/4” NPT 1/2” NPT 178 81
MLX 150 150,000 43.9 142,500 41.8 3.7 gpm 95% 1/2” NPT 1“ NPT 1/2” NPT 184 83
MLX 175 175,000 51.6 166,250 48.7 4.3 gpm 95% 1/2” NPT 1“ NPT 1/2” NPT 192 87
MLX 220 220,000 64.4 209,000 61.2 - 95% 1/2” NPT 1“ NPT - 201 91
NOTES:
1. For other boiler ratings:
Boiler Horsepower: HP = Output Radiation Surface: EDR sq. ft. = Output
33,475 150
NOTES:
1. For other boiler ratings:
Boiler Horsepower: HP = Output Radiation Surface: EDR sq. ft. = Output
33,475 150
50 thru 125
150 - 220
Cond. Hydronic DHW 2nd Gas Hydronic DHW 2nd
Outlet Return Inlet Return Supply Supply Outlet Supply
3/4" 3/4" 1/2" 3/4" 1/2" 3/4" 1/2" 3/4"
PVC copper NPT copper NPT NPT NPT copper
3/4" 1" 1/2" 3/4" 1/2" 1" 1/2" 3/4"
PVC NPT NPT copper NPT NPT NPT copper
Shipping
Weight
lbs kg
- -
- -
- -
133 60
148 67
163 74
- -
Shipping
Weight
lbs kg
- -
- -
- -
188 85
194 88
202 92
- -
CombiBoiler