Laars Outdoor Cover Installation Manual
Mascot ST Outdoor Cover Kit for Outdoor Installation
Document 4306
This Outdoor Cover Kit is for NEW OUTDOOR INSTALLATIONS ONLY.
All precautions must be taken to prevent water in the heat exchanger and condensate inside and outside
of the boiler from freezing. Outdoor installations of the Mascot ST are intended for locations where
freezing temperatures rarely occur. Damage due to freezing water or freezing condensate is not covered
by the Mascot ST manufacturers warranty.
This Outdoor Cover Kit must be completed prior to the Mascot ST being installed.
Then the Mascot ST Installation Manual (Doc 1316) must be followed for the remainder of the
Installation. Doc 1316 is shipped with the new Mascot ST or can be downloaded at www.laars.com.
Follow the installation instructions or the Mascot ST warranty will be void.
The Mascot ST and this Mascot ST Outdoor Cover Kit must be installed by qualied and licensed
personnel. Installation must comply with
1. National Electrical Code
2. National Fuel Gas Code
3. In Canada, CSA C22.1 Canadian Electrical Code Part 1, and CGA No. B149 (latest version)
4. Local, state, provincial, and national codes, laws, regulations, and ordinances.
5. In the State of California: The water heater must be braced, anchored, or strapped to avoid moving
during an earthquake. Contact local utilities for code requirements in your area.
6. In the Commonwealth of Massachusetts:
a. Outdoor units may be used for summer use only.
b. The water heater may be used for water heating only and may not be used in a combination of
domestic and space heating.
When nished with the installation, be sure to keep the Installation and Operating Instructions nearby for
reference purposes.
These instructions include information specic to outdoor water heater installations. This information is meant to replace the venting section
included in the tankless water heater installation manual. The tankless water heater installation manual includes instructions that will be
necessary for the proper installation of all other functions, such as water and gas piping, wall mounting, control programming, etc. Failure to follow
these instructions could result in substantial property damage, severe personal injury, or death.
This installation shall be done by a qualied service agency in accordance with these instructions, all applicable codes, and requirements of the
authority having jurisdiction. Failure to follow these instructions could result in substantial property damage, severe personal injury, or death.
WARNING
WARNING
Carefully consider installation when determining water
heater location. Please read the entire manual and these kit
instructions before attempting installation.
Failure to properly take factors such as piping, condensate
removal, freezing, venting, and wiring into account before
installation could result in wasted time and money, and
possible property damage, personal injury, or death.
This OUTDOOR kit is meant for OUTDOOR installations ONLY.
DO NOT install the water heater and this kit indoors as it
will result in improper water heater operation and property
damage, and could result in serious personal injury or death.
WARNING
Incorrect ambient conditions can lead to damage to
the heating system and put safe operation at risk. Ensure
that the installation location adheres to the information
included in this manual. Failure to do so could result in
property damage, serious personal injury, or death. Failure of
heater or components due to incorrect operating conditions
IS NOT covered by product warranty.
H2381300-
WARNING
The water heater must be installed as described in these
instructions: Upright, with the supplied Outdoor Cover in the
vertical position. DO NOT attempt to install the water heater
in any other orientation. Failure to follow these instructions
will result in improper water heater operation and property
damage, and could result in serious personal injury or death.
NOT FOR INDOOR
INSTALLATIONS
Caution
Do not connect the water heater to any heating systems
potable applications.
Do not introduce toxic chemicals, such as antifreeze or
water heater treatments, into the water heater or any piping
meant for potable purposes.
Page 1 of 4
Mascot ST Outdoor Cover Kit for Outdoor Installation
5
Vent Termination Clearances
(CSA B149.1)
opening
meter / regulator assembly
Table 6 - Vent Termination Clearances
NOTE: For clearances not specified in ANSI Z223.1/NFPA 54 or CAN/CSA B149.1, use clearances in accordance with local installation codes
and the requirements of the gas supplier.
*Clearance to opposite wall is 24 in.
1
A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family dwellings that serves both
dwellings.
2
Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath floor.
Description
US
(ANSI Z223.1/NFPA 54)
CANADA
A
Clearance above grade, veranda, porch, deck,
or balcony
12 in.
B
Clearance to window or door that may be
opened
4 ft. below or to side of
opening; 1 ft. above
3 ft.
C Clearance to permanently closed window *
D
Vertical clearance to ventilated soffit located above
the terminal within a horizontal distance of 2 feet
from the center line of the terminal
*
E Clearance to unventilated soffit *
F Clearance to outside corner *
G Clearance to inside corner *
H
Clearance to each side of center line
extended above meter / regulator assembly
*
3 ft. with a height 15 ft. above
I Clearance to service regulator vent outlet * 3 ft.
J
Clearance to non-mechanical air supply inlet to
building or the combustion air inlet to any other
appliance
4 ft. below or to side of
opening; 1 ft. above
opening
3 ft.
K
Clearance to a mechanical air supply inlet
3 ft. above if within 10 ft.
horizontally
6 ft.
L Clearance above paved sidewalk or driveway *
7 ft.
1
M
Clearance under veranda, porch, deck, or
balcony
*
1 ft.
2
Document 4306
• Outdoor Installation Area Operating Conditions Ensure ambient
temperatures are higher than 32°F / 0°C and lower than 104°F / 40°C.
• Prevent the air from becoming contaminated by the products,
places, and conditions listed in the water heater installation manual.
• Avoid continuously high levels of humidity.
Check for nearby connections to System water piping, Venting
connections, Gas supply piping, Electrical power, and the
Condensate Drain.
Check area around heater. Remove any combustible
materials, gasoline, and other ammable liquids.
If the heater is to replace an existing heater, check for and
correct any existing system problems, such as:
• System leaks.
• Location that could cause the system and heater to freeze and leak.
• Incorrectly sized expansion tank.
Clean and ush system when re-installing a heater.
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