Instructions / Assembly

WHL-004 REV. 5.26.17

 Do not use the water heater to support any piping.

 DO NOT vent near soffit vents, crawl space vents, or other areas where condensate or vapor could create a nuisance or

hazard or cause property damage.

 DO NOT vent where condensate vapor could cause damage or could be detrimental to the operation of regulators, relief valve,

or other equipment.

 DO NOT vent the water heater in a chimney flue serving a separate appliance designed to burn solid fuel. The water heater

may only be vented in vacant chimneys.

 Maximum Snow Level Determination: These installation instructions reference snow levels in establishing a minimum height

for the installation of exhaust vent or air intake terminations. Snow levels shall be determined as follows:

a. The installation location may, by ordinance, designate how snow levels are calculated in that location; or

b. In the absence of specific ordinances, snow levels shall be calculated from the average monthly maximum depth of snow

accumulation as indicated by the National Weather Service’s 10 year statistics for the installation location/geographical

area.

In addition:

 Total length of vent piping shall not exceed the limits specified in this manual.

 The vent piping for this direct vented appliance is approved for zero clearance to combustible construction.

 The flue products coming from the exhaust vent will create a large plume when the heater is in operation. Avoid venting in

areas that will affect neighboring buildings or be considered objectionable.

 DO NOT locate exhaust vent or intake pipe in a parking area where machinery may damage the pipe.

In the Commonwealth of Massachusetts and as Required by State and Local Codes:

 The vented gas fueled appliance shall not be installed so its combustion, ventilation, or dilution air is obtained from a bedroom

or bathroom.

 Signage: Whenever any through-the-wall (horizontal or sidewall) vent is installed less than seven feet above the finished

grade, a metal or plastic identification plate shall be permanently mounted to the exterior of the building at a minimum height of

eight feet above grade directly in line with the exhaust vent terminal. The sign shall read, in print no less than 0.5 inches in

size, “GAS VENT DIRECTLY BELOW. KEEP CLEAR OF ALL OBSTRUCTIONS”.

 Marking of Exhaust Vent and Intake Pipe: Piping used for ventilation, make-up, or combustion air intake shall be labeled as

follows:

a. Throughout the entire developed length:

i. Labels must be placed every ten feet for exposed/visible piping; or

ii. Labels must be placed every three feet for concealed piping.

b. At all changes of direction;

c. c. On each side of a penetration through a partition, wall or ceiling; and

d. d. The labels shall be black lettering that:

i. Indicates that the piping is used for ventilation, make-up, or combustion air intake, and

ii. The letters shall be sized equal to a minimum of the pipe diameter. However, for piping with a diameter exceeding

two inches, said lettering does not need to be larger than two inches.

The building owner is responsible for keeping the exhaust and intake terminations free of snow, ice, or other potential blockages, as

well as scheduling routing maintenance. Failure to keep the vent piping terminations clear and properly maintain the heater could result

in property damage, severe personal injury, or death.

For each floor containing bedroom(s), a carbon monoxide detector and alarm shall be placed in the living area outside the bedrooms,

as well as in the mechanical room that houses the heater. Detectors and alarms shall comply with NFPA 720 (latest edition). Failure to

comply with these requirements could result in product damage, severe personal injury, or death.