www.johnsonandstarley.co.uk
4
2
2.
Installation shall be in accordance with the current editions of:-
Building Standards (Scotland) (Consolidation) Regulations
Building Regulations
Gas Safety (Installation and Use) Regulations (as amended)
BS 7671 Institute of Electrical Engineers (I.E.E.) Wiring Regulations
BS 6891 Installation of Low Pressure Gas Pipework of up to 28mm (R1) in domestic premises (2nd family gases).
BS 5440 Pt. 1 (Flues for GasAppliances)
BS 5440-2: 2000 (Air Supply for GasAppliances)
BS 5864 Installation of Gas Fired DuctedAir Heaters
Models and Local Authority bylaws.
I
MPORTANT: STATUE LAW DEFINES
THAT ALL GAS APPLIANCES MUST BE INSTALLED
COMPETENT
PERSONS, i.e.
GAS SAFE
REGISTERED INSTALLERS
. GAS SAFE MEMBERSHIP ENQUIRIES
TEL: 0800 408 5500
IN ACCORDANCE WITH THE GAS SAFETY
(INSTALLATION AND USE)
REGULATIONS (CURRENT EDITION).
FAILURE TO COMPLY WITH THESE
REGULATIONS MAY LEAD TO PROSECUTION.
HEATER COMPARTMENTAND CLEARANCES
(See BS 5864)
2.1
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.
2.2
When the heater is fitted into a compartment, a minimum clearance from the compartment walls of 38mm (1
1
/
2
in) at the
rear, 75mm (3in) total at the sides (with a minimum of 25mm (1in) at any one side), and 63mm (2
1
/
2
in) at the front must
be left. Consideration should also be given to the space required for the removal and replacement of the filter tray and the
entry of the gas and electrical supplies.
2.3
For service access, a minimum of 600mm (24ins) 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 not be less that 75mm (3in). However, where 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.
Important: Ensure that the rear of the heater is at no time subjected to air pressure due to leaks from
underfloor, joists or roof spaces.
2.4
In airing cupboard installations, the part used as the air heater compartment must comply with the relevant section of
BS5864 and must be completely separated by either a non-combustible partition or a perforated metal partition with the
perforations not exceeding 13mm (1/2in). The secondary flue must be a tight fit where it passes through the partition and
must be suitably protected (see BS 5440: Part 1).
2.5
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 noncombustible material. This
requirement is applicable only to dwellings of more than two storeys.
2.6
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.
2.7
Where the Air Heater is to be insalled onto a combustible surface and under-floor ducting used, a suitable base tray (BT65/
90) MUST be used in order to provide edquate insulation.
NB where a base plenum is used no base tray is required!
2.8
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.
3.
VENTILATIONAND COMBUSTION AIR
3.1
The room or internal space in which the heater is installed requires a permanent air vent of minimum effective area
140cm
2
(21.6in
2
). The air vent should be either direct to outside air or to an adjacent room or internal space (other than a
toilet or bathroom) that itself has an equivalent air vent direct to outside.
3.2
Combustion air may be introduced, via a 125mm (5in) nominal bore pipe, connected to a return air duct or plenum from a
ventilated area and fitted with a lockable damper. The damper should be adjusted to control combustion airflow to
0.019m
3
/s (41cfm), (i.e. 1.56m/s [310ft/min] velocity in a 125mm [5in] bore pipe). If this arrangement is used, a non-
closeable warm air register MUST be provided in the same area as the front of the air heater or heater compartment if a
return air grille is not located in that area.
3.3
When installed in a compartment, two permanent ventilation openings into the compartment are required, one at high
level and one at low level, both communicating either directly with outside air or with a ventilated room or space. The
minimum effective areas specified in Table 1 are related to the rated heat input of the Air Heater.
3.4
If any room or area from which air is drawn for ventilation or combustion contains an extract fan, the permanent vents
must be sized to ensure that the operation of the appliance(s) at full rate is/are not adversely affected. A spillage test as
specified in sub-para 6.8 (Safety Checks) is carried out and any remedial work undertaken.
27
Fig. 7, PRINCIPAL DIMENSIONS (mm)
SIDE VIEW
PLAN VIEW
FRONT VIEW
BASE VIEW
GAS ENTRY
ELECTRICAL ENTRY
400
42.5
42.5
12
82
83
2
61
1
57
6
30
0
485
42
67
85
448
122
25
74
610
38
44
5
18
0
41
1
40
1
64
8
85
146 DIA.
30
25
24
3
37
37
2
2.
Installation shall be in accordance with the current editions of:-
Building Standards (Scotland) (Consolidation) Regulations
Building Regulations
Gas Safety (Installation and Use) Regulations (as amended)
BS 7671 Institute of Electrical Engineers (I.E.E.) Wiring Regulations
BS 6891 Installation of Low Pressure Gas Pipework of up to 28mm (R1) in domestic premises (2nd family gases).
BS 5440 Pt. 1 (Flues for GasAppliances)
BS 5440-2: 2000 (Air Supply for GasAppliances)
BS 5864 Installation of Gas Fired DuctedAir Heaters
Models and Local Authority bylaws.
I
MPORTANT: STATUE LAW DEFINES
THAT ALL GAS APPLIANCES MUST BE INSTALLED
COMPETENT
PERSONS, i.e.
GAS SAFE
REGISTERED INSTALLERS
. GAS SAFE MEMBERSHIP ENQUIRIES
TEL: 0800 408 5500
IN ACCORDANCE WITH THE GAS SAFETY
(INSTALLATION AND USE)
REGULATIONS (CURRENT EDITION).
FAILURE TO COMPLY WITH THESE
REGULATIONS MAY LEAD TO PROSECUTION.
HEATER COMPARTMENTAND CLEARANCES
(See BS 5864)
2.1
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.
2.2
When the heater is fitted into a compartment, a minimum clearance from the compartment walls of 38mm (1
1
/
2
in) at the
rear, 75mm (3in) total at the sides (with a minimum of 25mm (1in) at any one side), and 63mm (2
1
/
2
in) at the front must
be left. Consideration should also be given to the space required for the removal and replacement of the filter tray and the
entry of the gas and electrical supplies.
2.3
For service access, a minimum of 600mm (24ins) 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 not be less that 75mm (3in). However, where 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.
Important: Ensure that the rear of the heater is at no time subjected to air pressure due to leaks from
underfloor, joists or roof spaces.
2.4
In airing cupboard installations, the part used as the air heater compartment must comply with the relevant section of
BS5864 and must be completely separated by either a non-combustible partition or a perforated metal partition with the
perforations not exceeding 13mm (1/2in). The secondary flue must be a tight fit where it passes through the partition and
must be suitably protected (see BS 5440: Part 1).
2.5
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 noncombustible material. This
requirement is applicable only to dwellings of more than two storeys.
2.6
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.
2.7
Where the Air Heater is to be insalled onto a combustible surface and under-floor ducting used, a suitable base tray (BT65/
90) MUST be used in order to provide edquate insulation.
NB where a base plenum is used no base tray is required!
2.8
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.
3.
VENTILATIONAND COMBUSTION AIR
3.1
The room or internal space in which the heater is installed requires a permanent air vent of minimum effective area
140cm
2
(21.6in
2
). The air vent should be either direct to outside air or to an adjacent room or internal space (other than a
toilet or bathroom) that itself has an equivalent air vent direct to outside.
3.2
Combustion air may be introduced, via a 125mm (5in) nominal bore pipe, connected to a return air duct or plenum from a
ventilated area and fitted with a lockable damper. The damper should be adjusted to control combustion airflow to
0.019m
3
/s (41cfm), (i.e. 1.56m/s [310ft/min] velocity in a 125mm [5in] bore pipe). If this arrangement is used, a non-
closeable warm air register MUST be provided in the same area as the front of the air heater or heater compartment if a
return air grille is not located in that area.
3.3
When installed in a compartment, two permanent ventilation openings into the compartment are required, one at high
level and one at low level, both communicating either directly with outside air or with a ventilated room or space. The
minimum effective areas specified in Table 1 are related to the rated heat input of the Air Heater.
3.4
If any room or area from which air is drawn for ventilation or combustion contains an extract fan, the permanent vents
must be sized to ensure that the operation of the appliance(s) at full rate is/are not adversely affected. A spillage test as
specified in sub-para 6.8 (Safety Checks) is carried out and any remedial work undertaken.
27
Fig. 7, PRINCIPAL DIMENSIONS (mm)
SIDE VIEW
PLAN VIEW
FRONT VIEW
BASE VIEW
GAS ENTRY
ELECTRICAL ENTRY
400
42.5
42.5
12
82
83
2
61
1
57
6
30
0
485
42
67
85
448
122
25
74
610
38
44
5
18
0
41
1
40
1
64
8
85
146 DIA.
30
25
24
3
37
37
2
2.
Installation shall be in accordance with the current editions of:-
Building Standards (Scotland) (Consolidation) Regulations
Building Regulations
Gas Safety (Installation and Use) Regulations (as amended)
BS 7671 Institute of Electrical Engineers (I.E.E.) Wiring Regulations
BS 6891 Installation of Low Pressure Gas Pipework of up to 28mm (R1) in domestic premises (2nd family gases).
BS 5440 Pt. 1 (Flues for GasAppliances)
BS 5440-2: 2000 (Air Supply for GasAppliances)
BS 5864 Installation of Gas Fired DuctedAir Heaters
Models and Local Authority bylaws.
I
MPORTANT: STATUE LAW DEFINES
THAT ALL GAS APPLIANCES MUST BE INSTALLED
COMPETENT
PERSONS, i.e.
GAS SAFE
REGISTERED INSTALLERS
. GAS SAFE MEMBERSHIP ENQUIRIES
TEL: 0800 408 5500
IN ACCORDANCE WITH THE GAS SAFETY
(INSTALLATION AND USE)
REGULATIONS (CURRENT EDITION).
FAILURE TO COMPLY WITH THESE
REGULATIONS MAY LEAD TO PROSECUTION.
HEATER COMPARTMENTAND CLEARANCES
(See BS 5864)
2.1
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.
2.2
When the heater is fitted into a compartment, a minimum clearance from the compartment walls of 38mm (1
1
/
2
in) at the
rear, 75mm (3in) total at the sides (with a minimum of 25mm (1in) at any one side), and 63mm (2
1
/
2
in) at the front must
be left. Consideration should also be given to the space required for the removal and replacement of the filter tray and the
entry of the gas and electrical supplies.
2.3
For service access, a minimum of 600mm (24ins) 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 not be less that 75mm (3in). However, where 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.
Important: Ensure that the rear of the heater is at no time subjected to air pressure due to leaks from
underfloor, joists or roof spaces.
2.4
In airing cupboard installations, the part used as the air heater compartment must comply with the relevant section of
BS5864 and must be completely separated by either a non-combustible partition or a perforated metal partition with the
perforations not exceeding 13mm (1/2in). The secondary flue must be a tight fit where it passes through the partition and
must be suitably protected (see BS 5440: Part 1).
2.5
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 noncombustible material. This
requirement is applicable only to dwellings of more than two storeys.
2.6
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.
2.7
Where the Air Heater is to be insalled onto a combustible surface and under-floor ducting used, a suitable base tray (BT65/
90) MUST be used in order to provide edquate insulation.
NB where a base plenum is used no base tray is required!
2.8
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.
3.
VENTILATIONAND COMBUSTION AIR
3.1
The room or internal space in which the heater is installed requires a permanent air vent of minimum effective area
140cm
2
(21.6in
2
). The air vent should be either direct to outside air or to an adjacent room or internal space (other than a
toilet or bathroom) that itself has an equivalent air vent direct to outside.
3.2
Combustion air may be introduced, via a 125mm (5in) nominal bore pipe, connected to a return air duct or plenum from a
ventilated area and fitted with a lockable damper. The damper should be adjusted to control combustion airflow to
0.019m
3
/s (41cfm), (i.e. 1.56m/s [310ft/min] velocity in a 125mm [5in] bore pipe). If this arrangement is used, a non-
closeable warm air register MUST be provided in the same area as the front of the air heater or heater compartment if a
return air grille is not located in that area.
3.3
When installed in a compartment, two permanent ventilation openings into the compartment are required, one at high
level and one at low level, both communicating either directly with outside air or with a ventilated room or space. The
minimum effective areas specified in Table 1 are related to the rated heat input of the Air Heater.
3.4
If any room or area from which air is drawn for ventilation or combustion contains an extract fan, the permanent vents
must be sized to ensure that the operation of the appliance(s) at full rate is/are not adversely affected. A spillage test as
specified in sub-para 6.8 (Safety Checks) is carried out and any remedial work undertaken.
27
Fig. 7, PRINCIPAL DIMENSIONS (mm)
SIDE VIEW
PLAN VIEW
FRONT VIEW
BASE VIEW
GAS ENTRY
ELECTRICAL ENTRY
400
42.5
42.5
12
82
83
2
61
1
57
6
30
0
485
42
67
85
448
122
25
74
610
38
44
5
18
0
41
1
40
1
64
8
85
146 DIA.
30
25
24
3
37
37
Summary of Contents for 42-451-15
Page 25: ...25 Sales Spares Replacement Help Line 01604 762881 Fig 5b Non MODAIRFLOW CIRCUIT DIAGRAM...
Page 26: ...www johnsonandstarley co uk 26 12 FUNCTIONAL DIAGRAMS Fig 6a Non MODAIRFLOW FUNCTIONAL DIAGRAM...
Page 27: ...27 Sales Spares Replacement Help Line 01604 762881 Fig 6b Non MODAIRFLOW FUNCTIONAL DIAGRAM...
Page 28: ...www johnsonandstarley co uk 28 13 DIMENSIONS Fig 7 HI SPEC J90 DIMENSIONS...
Page 29: ...29 Sales Spares Replacement Help Line 01604 762881 14 NOTES...
