Submittal

Sizing Data
Vent System
Electrical
Data
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
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
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
Vent System
Vent System
INTAKE / EXHAUST
Max Equivalent
* Vent and Air Pipe Length (each)
STANDARD OPTIONAL
Size 2" dia 5.1cm 3"/5" dia 7.6/12.7cm
125 40 ft 12.2m 40 ft 12.2m
Installations in the U.S. require exhaust vent pipe that is PVC or CPVC complying
with ANSI/ASTM D1785 F441 or stainless steel complying with UL1738. Laars
suppliestherstsectionofventpipewhichis16"ofCPVCwitheachboiler.Installa-
tionsinCanadarequireexhaustventpipethatiscertiedtoULCS636.
Intake (air) pipe may be PVC, CPVC, ABS or galvanized pipe.
*To calculate equivalent length, measure the linear feet of the pipe, and add 5 feet
(1.5m) for each elbow used.
INTAKE AND EXHAUST LENGTH
MAX EQUIV. MAX EQUIV. CONCENTRIC MAX EQUIV.
SIZE VENT F T. M VENT F T. M VENT F T. M
50 2" 40 6.1 *3"* 150 30.5 3/5" 40 6.1
75 2" 40 6.1 *3"* 150 30.5 3/5" 40 6.1
100 2" 40 6.1 *3"* 150 30.5 3/5" 40 6.1
125 2" 40 6.1 *3"* 150 30.5 3/5" 40 6.1
150 2" 40 6.1 *3"* 150 30.5 3/5" 40 6.1
175 2" 40 6.1 *3"* 150 30.5 3/5" 40 6.1
220 2" 30 4.6 *3"* 120 24.4 3/5" 40 6.1
INTAKE / EXHAUST
Max Equivalent Vent and Air Pipe Length (each)
STANDARD 2-PIPE STANDARD 2-PIPE OPTIONAL CONCENTRIC
SIZES DIA.
F T. m DIA. F T. m DIA. F T. m
50 - 175 2"
40 12.2 *3"* 150 45.7 3/5" 40 12.2
220 2”
30 9.1 *3”* 120 36.6 3/5” 40 12.2
Installations in the U.S. require exhaust vent pipe that is a combination of PVC & CPVC complying with
ANSI/ASTM D1785 F441 or stainless steel complying with UL1738. Polypropylene installations require
exhaustventpipethatiscertiedtoULCS636.
Intake (air) pipe may be any material that complies with ANSI/ASTM D1785 F441, ABS that complies with
ANSI/ASTM D1527 or galvanized material.
Installer must comply fully with manufacturer's installation instructions, to maintain ANSI Z21.13 safety
certication.
Closet and alcove installations do not allow the use of PVC under any circumstances
To calculate max equivalent length, measure the linear feet of the pipe, and add 5 feet (1.5m) for each
elbow used.
* Must use 2x3 adapter within 1 ft. (30cm) of boiler.
Electrical
Data
Size Boiler
Volts Phase Amps
MLX 50 120 Single 1.5
MLX 75 120 Single 1.5
MLX 100 120 Single 1.5
MLX 125 120 Single 1.5
MLX 150 120 Single 1.5
MLX 175 120 Single 2.2
MLX 220 120 Single 2.2
*
Minimum 15A circuit required
* Must use 2x3 adapter within 1 ft. (30cm) of boiler.
Reference the Installation and Operation Manual for more details.
Vent System
Vent System
INTAKE / EXHAUST
Max Equivalent
* Vent and Air Pipe Length (each)
STANDARD OPTIONAL
Size 2" dia 5.1cm 3"/5" dia 7.6/12.7cm
125 40 ft 12.2m 40 ft 12.2m
Installations in the U.S. require exhaust vent pipe that is PVC or CPVC complying
with ANSI/ASTM D1785 F441 or stainless steel complying with UL1738. Laars
suppliestherstsectionofventpipewhichis16"ofCPVCwitheachboiler.Installa-
tionsinCanadarequireexhaustventpipethatiscertiedtoULCS636.
Intake (air) pipe may be PVC, CPVC, ABS or galvanized pipe.
*To calculate equivalent length, measure the linear feet of the pipe, and add 5 feet
(1.5m) for each elbow used.
INTAKE AND EXHAUST LENGTH
MAX EQUIV. MAX EQUIV. CONCENTRIC MAX EQUIV.
SIZE VENT F T. M VENT F T. M VENT F T. M
50 2" 40 6.1 *3"* 150 30.5 3/5" 40 6.1
75 2" 40 6.1 *3"* 150 30.5 3/5" 40 6.1
100 2" 40 6.1 *3"* 150 30.5 3/5" 40 6.1
125 2" 40 6.1 *3"* 150 30.5 3/5" 40 6.1
150 2" 40 6.1 *3"* 150 30.5 3/5" 40 6.1
175 2" 40 6.1 *3"* 150 30.5 3/5" 40 6.1
220 2" 30 4.6 *3"* 120 24.4 3/5" 40 6.1
INTAKE / EXHAUST
Max Equivalent Vent and Air Pipe Length (each)
STANDARD 2-PIPE STANDARD 2-PIPE OPTIONAL CONCENTRIC
SIZES DIA. F T. m DIA. FT. m DIA. F T. m
50 - 175 2" 40 12.2 *3"* 150 45.7 3/5" 40 12.2
220 2” 30 9.1 *3”* 120 36.6 3/5” 40 12.2
Installations in the U.S. require exhaust vent pipe that is a combination of PVC & CPVC complying with
ANSI/ASTM D1785 F441 or stainless steel complying with UL1738. Polypropylene installations require
exhaustventpipethatiscertiedtoULCS636.
Intake (air) pipe may be any material that complies with ANSI/ASTM D1785 F441, ABS that complies with
ANSI/ASTM D1527 or galvanized material.
Installer must comply fully with manufacturer's installation instructions, to maintain ANSI Z21.13 safety
certication.
Closet and alcove installations do not allow the use of PVC under any circumstances
To calculate max equivalent length, measure the linear feet of the pipe, and add 5 feet (1.5m) for each
elbow used.
* Must use 2x3 adapter within 1 ft. (30cm) of boiler.
Electrical
Data
Size Boiler
Volts Phase Amps
MLX 50 120 Single 1.5
MLX 75 120 Single 1.5
MLX 100 120 Single 1.5
MLX 125 120 Single 1.5
MLX 150 120 Single 1.5
MLX 175 120 Single 2.2
MLX 220 120 Single 2.2
*
Minimum 15A circuit required
* Must use 2x3 adapter within 1 ft. (30cm) of boiler.
Reference the Installation and Operation Manual for more details.
H
H
H
H
H
H
H
H
H
H
H
H
H
H
Accessories
for Field
Mounting
Horizontal concentric vent kit
Concentric vent adapter
Concentric pipe, 12" long
Concentric pipe, 24" long
Concentricpipe,36"long
Concentric pipe, 13"-18"
telescoping
Concentric elbow, 90°
Wall plate for concentric pipe
Horizontal concentric sstl terminal
Horizontal concentric 2" PVC
terminal
Horizontal concentric 3" PVC
terminal
Concentricush-mount2"
terminal
Concentricush-mount3"
terminal
Condensate Neutralizer
BLXH
BLXH
BLXH
BLXH
BLXH
BLXH
BLXH
BLXH
BLXH
BLXH
BLXH
BLXH
BLXH
BLXH