Submittal Sheet
Sizing Data
Vent System
Clearances
Electrical
Data
Domestic Hot Water
Capacity
LAARS Heating Systems
Page 10
SECTION 4.
Installation
4.1 Location and Clearances
The Mascot ST must be mounted to a suitable wall by
a quali ed heating contractor under the guidelines of a
wall mounted water heater.
The wall may be of concrete or wood. Suitable fasteners
for concrete or wood must be used. Failure to wall
mount this water heater using correct fasteners will
affect the performance and life expectancy of the water
heater and will void the warranty.
Figure 2. Locating the Appliance
9
23
3
8
3
8
6
15
12
30
Table 1. Minimum Clearances
Installations must comply with
• All the local, state, provincial, and national codes,
laws, regulations and ordinances.
• National Fuel Gas Code, ANSI Z224.1 – The latest
version.
• National Electrical Code.
• A National Standard of Canada CAN/CSA-B149.1-05
Check before placing the Water Heater
• Always check the connected components which are
near to the heater. The components are below.
Water piping position / Venting adapter / Gas supply
piping / Electrical power / Condensate drain hose.
• Con rm area around Water Heater. Remove any
combustible materials, gasoline and other fl ammable
liquids. Failure to keep Water Heater area clear and
free of combustible materials, gasoline and other
fl ammable liquids and vapors can result in severe
personal injury, death or substantial property damage.
• The Water Heater which has gas control system
components must be protected from any possible
danger during operation and service.
• If new Water Heater replaces the existing appliance,
check and correct system problems, for example:
- Do not install : System leaks causing oxygen
corrosion or heat exchanger cracks from hard water
deposits.
Provide clearances as outlined in Table 1
• As for vent connector and hot water pipe from
combustible construction, please consult with a
quali ed technician.
• If the heater was installed in a narrow space or
corner, please ensure that there is suf cient space
for service and maintenance access. For regular
maintenance, there should not be any problem to
approach gas and water line.
The water heater must be installed on a wall that can
bear its weight.
WARNING
WARNING
CLEARANCES FOR SERVICE ACCESS
• The water heater must be installed on a wall that
can bear its weight.
• Adequate service clearance must be considered.
• The Water heater can be installed on any suitable
internal wall (sound proo ng may be required when
installing onto a stud partition wall).
Minimum clearances to Combustibles.
to Combustibles and for Service.
For installation from
Non-Combustibles and
Combustibles
Suggested
Service
Clearance
TOP of appliance
9 in
(23 cm)
18 in
(46 cm)
BACK of appliance
5
/
8
in
(1.5 cm)
5
/
8
in
(1.5 cm)
FRONT of appliance
6 in
(15 cm)
40 in
(101 cm)
SIDE of appliance
3 in
(7 cm)
8 in
(20 cm)
BOTTOM of
appliance
12 in
(30 cm)
24 in
(61 cm)
MSTWW199
Efficiency
Gas Conn.
Size
DHW Conn.
Size
Btu/hr kW Btu/hr kW EF inches inches lbs kg
MSTWW199 199000
58.3 19900 5.8 0.96 3/4 NPT 3/4 NPT 88 40
GPM l/m GPM l/m GPM l/m
MSTWW199 10 38 8 30 4.7 18
Volts Phase Amps
MSTWW199 120 Single 4
Model
Water Heater
Max Input Min Input Weight
Model
Model
35°F Rise
45°F Rise
77°F Rise
Efficiency
Gas Conn.
Size
DHW Conn.
Size
Btu/hr kW Btu/hr kW EF inches inches lbs kg
MSTWW199 199000 58.3 19900 5.8 0.96 3/4 NPT 3/4 NPT 88 40
GPM l/m GPM l/m GPM l/m
MSTWW199 10 38 8 30 4.7 18
Volts Phase Amps
MSTWW199 120 Single 4
Model
Water Heater
Max Input
Min Input
Weight
Model
Model
35°F Rise
45°F Rise
77°F Rise
Efficiency
Gas Conn.
Size
DHW Conn.
Size
Btu/hr kW Btu/hr kW EF inches inches lbs kg
MSTWW199 199000 58.3 19900 5.8 0.96 3/4 NPT 3/4 NPT 88 40
GPM l/m GPM l/m GPM l/m
MSTWW199 10 38 8 30 4.7 18
Volts Phase Amps
MSTWW199 120 Single 4
Model
Water Heater
Max Input
Min Input
Weight
Model
Model
35°F Rise
45°F Rise
77°F Rise
Model
3˝ Combustion Air / Vent Pipe
2˝ Combustion Air / Vent Pipe
*
Max Elbow Max Max Elbow Max
MSTWW199 100´ (30M) 6 50´ (15M) 4
*
Must use 3 x 2 adapter within 1 ft. (30cm) of water heater. Reference the Installation and Operation Manual for more details.