Laars Heating Systems
Page 4
1.2 Model Identification
Consult the rating plate on the unit. The
following information describes the model number
structure.
Model Character Designation
1-2 Model Series Designation
M S = Mighty Stack
3-5 Gallons
080 = 80 Gallons (303 liters)
5-8 Size
1 9 9 = 199,900 BTU/h input
3 0 0 = 299,000 BTU/h input
3 9 9 = 399,900 BTU/h input
9 Fuel
N = Natural Gas
P = Propane
10 Altitude
A = 0-10,000 feet
11 Heat Exchanger / Tank Approvals
2 = HLW Copper Heat Exchanger Only
5 = HLW Cupronickel Heat Exchanger Only
X = HLW (Tank and Copper Heat Exchanger)
Y = HLW (Tank and Cupronickel Heat Exchanger)
12 Pump
N = Normal Water Pump
S = Soft Water Pump
13 Model Revision
1 = Initial Release
1.3 Warranty
Laars Heating Systems’ Mighty Stack appliances
are covered by a limited warranty. The owner should
go to the Laars.com website and register for warranty.
All warranty claims must be made to an
authorized Laars Heating Systems representative or
directly to the factory. Claims must include the serial
number and model (this information can be found
on the rating plate), installation date, and name of
the installer. Shipping costs are not included in the
warranty coverage.
Some accessory items are shipped in separate
packages. Verify receipt of all packages listed on
the packing slip. Inspect everything for damage
immediately upon delivery, and advise the carrier of
any shortages or damage. Any such claims should be
filed with the carrier. The carrier, not the shipper, is
responsible for shortages and damage to the shipment
whether visible or concealed.
1.4 Dimensions
See Figure 1.
1.5 Locating the Appliance
The appliance should be located to provide
clearances on all sides for maintenance and inspection.
It should not be located in an area where leakage of
any connections will result in damage to the area
adjacent to the appliance or to lower floors of the
structure.
When such a location is not available, it is
recommended that a suitable drain pan, adequately
drained, be installed under the appliance.
The appliance is design certified by CSA-
International for installation on combustible flooring;
in basements; in closets, utility rooms or alcoves
.
Mighty Stack Water heaters omust never be
installed on carpeting.
The location for the appliance
should be chosen with regard to the vent pipe lengths
and external plumbing. The unit shall be installed
such that the gas ignition system components are
protected from water (dripping, spraying, rain, etc.)
during operation and service (circulator replacement,
control replacement, etc.). When vented vertically, the
Mighty Stack must be located as close as practical to
a chimney or outside wall. If the vent terminal and/
or combustion air terminal terminate through a wall,
and there is potential for snow accumulation in the
local area, both terminals should be installed at an
appropriate level above grade such that blockage of
the terminal from accumulated debris or precipitation
is prevented.
The dimensions and requirements that are shown
in Table 2 should be met when choosing the locations
for the appliance.
1
2
3
4 5
6
7 8
9
10
11
12
13
M S
0
8 0
A
SERIES
M
S
GALLONS
0 8 0
SIZE
1
9
9
3
0
0
3
9
9
FUEL
N
P
ALTITUDE
A
REVISION
1
HEAT
EXCH.
2
5
X
Y
PUMP
OPTIONS
N
S
Model Nomenclature
see Section 1.2 for Model Identification
Summary of Contents for Mighty Stack MS-080
Page 14: ...Laars Heating Systems Page 14 Figure 4 Venting...
Page 19: ...Mighty Stack Page 19 Figure 7 Wiring Diagram ON OFF Water Heater...
Page 30: ...Laars Heating Systems Page 30 Figure 9 Combustion Chamber Components...
Page 31: ...Mighty Stack Page 31 Figure 10 Jacket Components...
Page 32: ...Laars Heating Systems Page 32 Figure 11 Heat Exchanger Components...
Page 33: ...Mighty Stack Page 33 Figure 12 Gas Train Components...
Page 34: ...Laars Heating Systems Page 34 Figure 13 Control Panel Components...
Page 35: ...Mighty Stack Page 35 Figure 14 Pump Assembly Components...
