Richmond RMTGHRH111DVLN User Manual

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AP18733 REV. 3.2.17

This appliance requires fresh, uncontaminated air for safe operation and must be installed in a mechanical room where there is adequate

combustion and ventilating air. NOTE: To prevent combustion air contamination, see Table 9. Follow the National Fuel Gas Code (ANSI

Z223.1 / NFPA 54).

Combustion air from the indoor space can be used if the space has adequate area or when air is provided through a duct or louver to supply

sufcient combustion air based on the appliance input. Never obstruct the supply of combustion air to the appliance. If the appliance is installed

in areas where indoor air is contaminated (see Figure 12) it is imperative that the appliance be installed as direct vent so that all combustion air

is taken directly from the outdoors into the appliance intake connection.

Unconned space is space with volume greater than 50 cubic feet per 1,000 Btu/hour (4.8 cubic meters per kW) of the total input rating of

all fuel-burning appliances installed in that space. Rooms connected directly to this space, through openings not furnished with doors, are

considered part of the space.

Conned space is space with volume less than 50 cubic feet per 1,000 Btu/hour (4.8 cubic meters per kW) of the total input rating of all fuel-

burning appliances installed in that space. Rooms connected directly to this space, through openings not furnished with doors, are considered

part of the space.

When drawing combustion air from inside a conventionally constructed building to a conned space, such space should be provided with two

permanent openings: one located 6" (15 cm) below the space ceiling, the other 6" (15cm) above the space oor. Each opening should have a

free area of one square inch per 1,000 Btu/hr (22cm

/kW) of the total input of all appliances in the space, but not less than 100 square inches

(645).

If the conned space is within a building of tight construction, air for combustion must be obtained from the outdoors as outlined in the Venting

section of this manual. See Figure 13.

DO NOT PLACE

DRYER IN PROXIMITY

TO WATER HEATER

Figure 12 – LP-325-X

4. Power Venting, Indoor Combustion Air Installation in Confined or Unconfined Space

NOTE: This water heater should be installed using direct venting in any instance where there are or may be ammable vapors in the area.

FOR YOUR SAFETY

Do not store or use gasoline or other ammable vapors and liquids in the vicinity of this or any other appliance. To do so may result in an explosion

or re.

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Richmond RMTGHRH111DVLN Encore 11 GPM 199,900 BTU Tankless Natural Gas Water Heater