Majestic Fireplaces Royal Collection WMC36 Operating Manual - Installation

7

WMC Series Woodburning Fireplace

20000583

Chimney Supports

The chimney system is supported by the fireplace for 

vertical chimney heights less than 30' (9 m) above the 

hearth. Chimney supports are required if the vertical 

height exceeds 30' (9 m) with SK8 chimneys or 20' (6 

m) with 3-wall chimneys.  Locate chimney supports 

at ceiling holes or other structural framing at 30' (9 m) 

(SK8) or 20' (6 m) (3-wall) heights.  Spacing between 

chimney supports 

must not

 exceed 30' (9 m) (SK8) 

or 20' (6 m) (3-wall).  Use Chimney Support Model 

SKCS8 (SK8) and TCS8A (3-wall).  

(NOTE:  The 

chimney support cannot be mounted directly to 

the fireplace.) 

 Support provided by elbow straps ful-

fills the support requirement only if they are spaced as 

previously described. (A chimney support is 2

¹⁄₂

" long 

when installed.)

Angled chimney runs require a support every 6' (1.8m) 

in addition to the elbow straps. Chimney supports are 

used for this function. (Fig. 7) 

Chase Installation

A chase is a vertical boxlike structure which encloses 

the fireplace and/or chimney. Chases are typically built 

on the outside of the house with fireplace opening cut 

into the outer wall of a room. (Page 5, Fig. 3)

If you need help in determining fireplace location or 

how the chimney system should be run, contact your 

CFM Corporation dealer for assistance.

Insulating Fireplace Enclosure 

for Cold Climates

If you live in a cold climate, it is not required but 

highly recommended

 that you insulate fireplace 

enclosure to eliminate cold air penetration as much 

as possible.

Insulate base of fireplace with a noncombustible 

insulation rated for a minimum of 300°F.  Insulating 

is 

very important

 for outside wall installations over 

a concrete slab. If fireplace is installed on a platform, 

insulation should be placed on top of the platform 

before 

fireplace is set. (Fig. 8)

When a fireplace is installed in a chase or on a 

outside wall, enclosure should be treated like any 

outside wall in a home. Insulation should be installed 

on the inside wall as well as the outside wall(s). In a 

chase, it is also a good idea to install a firestop at the 

first ceiling level above the fireplace and enclose the 

chase with sheeting material. Insulation may then be 

installed above sheeting material to assure the space 

around the fireplace is totally protected. (Fig. 3)

When installing the chimney, 

DO NOT

 caulk between 

outer pipe and firestop. It is vital that some air be al-

lowed to flow through this very thin gap.

CAUTION: 

 WHEN INSTALLING A FIREPLACE IN 

AN INSULATED ENCLOSURE, BE SURE ALL RE-

QUIRED AIR SPACES ARE MAINTAINED. (Page 13, 

Fig. 18)

Installation

FP284

Fig. 7

  Chimney support installation.

FP284

MBUF CHIMNEY SUPPORT

1/28/99   djt

Chimney Sup-

port Strap

Chimney 

Support

FPC555

Platform insulation 

circulating model

1/28/99   djt

FPC555

Fig. 8 

  Insulating between platform and fireplace.

Cover Plate

Top Shield

Hard, Flat 

Surface

Insulation

Platform