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GAS LEAKS

DO NOT OPERATE ANY ELECTRICAL SWITCHES, OR USE A

NAKED FLAME TURN OFF THE GAS SUPPLY. VENTILATE THE

AREA BY OPENING DOORS AND WINDOWS.

CALL THE NATIONAL GAS

EMERGENCY SERVICE ON

0800 111999

HEATER COMPARTMENT CLEARANCES

(see BS 5864)

6.1

IMPORTANT: If the heater is to be fitted to an existing base duct (warm air plenum), always ensure that
installation is carried out such that the rear left hand corner of the heater is aligned with the rear left hand
corner of the base duct, so that any overhang or blanking off will be at the front and/or right hand side. In
any event, blanking plates must be mechanically secured and all joints sealed.

6.2

When the heater is fitted into a compartment consideration should be given to the space required for the
removal and replacement of the filter tray and the entry of the gas and electrical supplies.

6.3

For service access, a minimum of 500mm (20”) is required at the front of the heater. Space must also be
allowed, in a compartment installation, to permit the removal of the heater. The clearance between the
appliance and the compartment should be not less than 75mm (3”). However, if clearances are less than
75mm, the internal surface of the compartment must be lined with non-combustible material. The compartment
must be of a fixed rigid structure.

6.4

In airing cupboard installations, the part used as the air heater compartment must comply with the relevant
section of BS 5864 and must be completely separated by either a non-combustible partition or a perforated
metal partition with the perforations not exceeding 13mm (½”). The secondary flue must be a tight fit where
it passes through the partition and must be suitably protected (see BS 5440:Part 1).

6.5

In under-stairs installations, the compartment must comply with the relevant section of BS 5864, provided
that in addition, all internal surfaces, including the base, are non-combustible or lined with non-combustible
material. This requirement is applicable only to dwellings of more than two storeys. Combustible floors must
be insulated from the heater.

6.6

In free-standing installations, (see instructions packed with free standing kit), only one or two walls will be in
contact with the air heater and therefore complying with the relevant section of BS 5864.

6.7

If the Air Heater is to be installed onto a combustible surface, a suitable base tray (BT40) is required. However,
when a base duct is used, this provides sufficient insulation, and no insulation is required.

6.8

For Slot Fix applications (see instructions packed with the Slot Fix Kit), it is important to ensure that the draught
diverter relief is maintained on both sides of the application.

TECHNICAL DATA

TABLE 1

HI-SPEC J40

GAS

G20

GAS SUPPLY PRESSURE

20mbar

GAS CATEGORY

I 2 H

COUNTRIES OF INSTALLATION

GB & IE

ELECTRICAL SUPPLY