Pre-Cast Fireplace Application - Fireplace Construction - Nu-Flame Vitesse H.E. Use, Installation & Servicing Instructions

11.2 - FIRE SURROUND REQUIREMENTS (See diagram in section 11.1)
a. If the Fire is to be fitted into a purpose made Fire Surround it must have a temperature rating of 150
b. Where the fire is to be fitted into an existing 16" chair brick a depth of 240mm is required to allow sufficient volume for Debris,
if sufficient depth is not available the rear of the Chair Brick should be removed or extra depth added to the front.
c. The Fire requires a non-combustible hearth of at least 12mm thick.
d. The surface of the hearth must stand at least 50mm above the floor and level with the fireplace opening.
e. The hearth must project at least 300mm in front of the fireplace opening and 150mm either side (700mm minimum hearth width).
f. The base of the fireplace must be flat, level and square to the face of the fireplace opening.
g. The Surround must cater for a minimum flat surface around the Fireplace Opening allowing 610mm high by 510mm wide.
This is essential in order to achieve a good seal between the face of the surround and the sealing flanges of the fire.
h. The Fire Surround must be fully sealed to the Fireplace Opening to ensure a good flue seal.
i. The Fireplace Opening should have provision for a gas supply through the rear, see Section 10 Gas Supply.
j. The Thermatronic fire is fitted with Electronic Equipment, which is sensitive to dampness and high humidity so it is very
important that any rendering/building work is allowed to thoroughly dry out before Installation.
! IMPORTANT NOTE !
11.3 - CLEARANCES TO COMBUSTIBLE MATERIALS AND SHELVES (Ref: Diagram in section 11.1)
a. A non combustible shelf can be fitted above the fire and should be positioned at least 95mm above the builders opening.
We recommend the depth of the shelf should be a maximum of 75mm as anything deeper will reduce convection air and the
efficiency of the fire. For deeper non-combustible shelves they must be raised a further 25mm for every extra 25mm of depth.
b. A 150mm combustible shelf can be fitted above the fire but must be positioned at least 195mm above the builders opening.
For deeper combustible shelves they must be raised a further 25mm for every extra 25mm of depth.
c. The sidewalls of a combustible fire surround can be 275mm from the inside of the builders/fireplace opening provided its depth is
no more than 150mm, however this must be increased by 25mm per side for every extra 25mm of depth.
d. With all heating appliances, soft furnishings, decorations and wall coverings may discolour or scorch if placed too close.
e. No combustible material, e.g. curtains must be closer than 500mm to the builders opening.
f. Any combustible wall claddings (wall paper) must be cut back to a height of 750mm and 300 mm either side of the Fireplace
Opening.
g. Due to the heat output of The Vitesse H.E. it is not recommended to use blown vinyl wall covering around the fire.
NOW PROCEED TO SECTION 15 - FIXING THE FIRE.
Dry lined walls – ensure that any air gaps between the back of the plasterboard and wall are
sealed around the builders opening or fireplace as this can affect flue pull and wall staining.
12
º
C.