Miller CMF2 80 PG Instruction Manual download pdf (Page 4)

• The Commonwealth of Massachusetts requires

compliance with regulation 248 CMR 4.00 and 5.00 for

installation of through – the – wall vented gas appliances

as follows:

1. For direct-vent appliances, mechanical-vent heating

appliances or domestic hot water equipment, where

the bottom of the vent terminal and the air intake is

installed below four feet above grade the following

requirements must be satisﬁ ed:

a.) A carbon monoxide (CO) detector and alarm shall be

placed on each ﬂ oor level where there are bedrooms.

The detector shall comply with NFPA 720 (2005

Edition) and be mounted in the living area outside

the bedroom(s).

b.) A (CO) detector shall be located in the room that

houses the appliance or equipment and shall:

• Be powered by the same electrical circuit as the

appliance or equipment. Only one service switch

shall power the appliance and the (CO) detector;

• Have battery back-up power;

• Meet ANSI/UL 2034 Standards and comply with

NFPA 720 (2005 Edition); and Approved and listed

by a Nationally Recognized Testing Laboratory as

recognized under 527 CMR.

c.) A Product-approved vent terminal must be used,

and if applicable, a product-approved air intake must

be used. Installation shall be in strict compliance

with the manufacturer’s instructions. A copy of

the installation instructions shall remain with the

appliance or equipment at the completion of the

installation.

d.) A metal or plastic identiﬁ cation plate shall be mounted

at the exterior of the building, four feet directly above

the location of vent terminal. The plate shall be of

sufﬁ cient size, easily read from a distance of eight

feet away, and read “Gas Vent Directly Below”.

2. For direct-vent appliances, mechanical-vent heating

appliances or domestic hot water equipment where

the bottom of the vent terminal and the air intake is

installed above four feet above grade the following

requirements must be satisﬁ ed:

a.) A (CO) detector and alarm shall be placed on each

ﬂ oor level where there are bedrooms. The detector

shall comply with NFPA 720 (2005 Edition) and be

mounted in the living area outside the bedroom(s).

b.) The (CO) detector shall:

• Be located in the room that houses the appliance

or equipment;

• Be hard-wired or battery powered or both.

• Shall comply with NFPA 720 (2005 Edition).

c.) A product-approved vent terminal must be used, and

if applicable, a product-approved air intake must be

used. Installation shall be in strict compliance with the

manufacturer’s instructions. A copy of the installation

instructions shall remain with the appliance or

equipment at the completion of the installation.

Minimum Installation Clearances

• Access for positioning and servicing the unit must be

considered when locating unit. The need to provide

clearance for access to panels or doors may require

clearance distances over and above the requirements.

• This appliance must be installed in accordance with

clearances listed in Table 1. The furnace must be installed

with ample clearance for easy access to the air ﬁ lter,

blower assembly, burner assembly, controls, and vent

connections.

• Locate and install this unit in position as speciﬁ ed on

pages 10 & 11. This unit is designed only for Indoor

installations and should be located with consideration

of minimizing the length of the supply and return ducts.

Table 1. Minimum Clearance Requirements

INSTALLATION CLEARANCES

CLOSET ALCOVE

Front * 6" 18"

Rear 0" 0"

Sides 0" 0"

Top 17" 17"

Duct w/in 3ft of furnace 1/4" 1/4"

Vent 6” 6”

Plenum 1" 1"

Roof Jack Barrel 0” 0”

†

NOTES:

* Service Clearance

Alcove Installations - Allow 18 in. minimum clearance from front of

unit to nearest wall or partition for servicing.

Closet installations - Require a return air grill installed in the door

or a partially louvered door across the opening for proper air

circulation. For clearances 6” or greater, the closet must have an

open free area of 235 in

minimum. For special clearances between

1” - 5”, requirements are a louvered door with a minimum of 250

(1613 cm

) free area. A fully louvered closet door is strongly

recommended for both installation types.

LEFT

SIDE

FRONT

RIGHT

SIDE

REAR

VENT

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Miller CMF2 80 PG Instruction Manual Page 4

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