chaffoteaux
chaffsteaux ltd.
et Maury
m
SHE!
installati
servicing instructions
contents
Page 3
Pages 4 and 5
Pages 6 and 7
Pages 8 and 9
Page 10
: TECHNICAL DATA
: INSTALLATION
: SERVICING INSTRUCTIONS
: FAULT FINDING CHART FOR
SH 12 SHOWER HEATER
: SHORT LIST
GENERAL
The CORVEC SH 12 is a. balanced-flued instantaneous gas fired shower heater. It has been specifi-
cally designed to be used with a shower, and be connected directly to the mains cold water supply.
No purpose provided ventilation is required for the SH 12. It should be installed adjacent to the
proposed shower location providing that the terminal is positioned as recommended in the appropriate section of these instructions.
The installation of the shower heater must be in accordance with the relevant requirements of the
Gas Safety Regulations, Building Regulations and the Byelaws of the local Water Undertaking. It
should be in accordance also with any relevant requirements of the local gas region and local authority, and the relevant recommendations of the following British Standard Codes of Practice :
CP 33 1
CP 333 Selection and installation of town gas hot water supplies
BS 5440 Flues and air supply for gas appliances of rated input not exceeding 60 kW (1 st and 2nd
Installation of pipes and meters for town gas
Part 3 Low pressure installation pipes
Part 1 Domestic premises
family gases)
Part 1 Flues
2
technical data
3
NATURAL GAS TABLE 1
Heat input
Heat output
Gas rate
Burner pressure
Main burner injectors marking
Pilot burner injectors marking
Waterflowrate-raised20oC(360F)
Waterflowrate-raised35oC(63oF)
Minimum water pressure (heater only)
Maximum water pressure
Note :
must be made for the resistance of the shower and associated pipework and fittings. This should be
mately O-2 bar (3 1b/in2).
...............................
..............................
................................
...........................
..................
..................
............
............
............
.....................
The
minimum water pressure is for the correct operation of the heater only. An additional allowance
11.3 kW 38,600 Btu/h
8.5 kW 29,000 Btu/h
1.08 m3/h 38.14 ft3/h
12.7 mbar
113 113
25
380 l/h
215 l/h 0.79 g-pm.
0.5 bar
10 bar
5.1 inswg.
1.39 gpm.
7.5 lb/in2
150 lb/in2
25
apprM-
Water j.&$
Water outlet
Gas
Height
Width.............-......-..-.-.....-
Depth
Weight
Space for fixing Top
Space for fixing Bottom
SpaceforfixingSides
SpaceforfigFront
HOLE FOR WALL LINER
Width..........-...................-.-.
Height .................................
WALL THICKNESS
Standard flue set
Extra available
.................
.............................
...................................
.................................
..................................
.................................
........................
......................
.......................
.......................
.......................... 75-355 mm
............................
............
1
..
Right hand
connection
Left hand
connection
Centre
connection
600 mm
267 mm
210 mm
10.7 kg
100 mm
152mm
NIL
130mm
240mm
125 mm
75610 mm
15 mm copper
15 mm copper
15 mm copper
23.6 ius
10.5 ins
8.25 ins
23.5 lbs
4.0 ins
6.0 ins
NIL
5.1 ins
9.5 ins
4.9 ins
3-14 ins
3-24 ins
3
installation
The SH 12 is supplied in two cartons, one containing the
heater, the other containing the flue set and shower fittings.
INSTALLING THE BALANCED FLUE
The standard flue set is suitable for walls having a thickness
of 75 mm (3 in) to 355 mm (14 in). A flue set for wall
thicknesses up to 610 mm (24 in) is available to special
order.
Detailed recommendations for flueing are given in BS
5440 : 1. The following notes are intended to give general
guidance.
The shower heater must be installed so that the flue ter-
minal is exposed to the external air.
Termination should be on a clear expanse of wall ; the
terminal being preferably not less than 600 mm (2 ft) away
from a corner, recess or projection.
DO NOT install the terminal :
a) within 300 mm (1 ft), measured vertically, from the
bottom of an openable window, air vent or any other
ventilation opening.
b) within 300 mm (1 ft) above adjacent ground level.
C)
within 600 mm (2 ft) of any surface facing the terminal.
d) immediately beneath eaves or a balcony.
Where the lowest part of the terminal is less than 2 m
(6.6 ft) above the level of any ground, balcony, flat roof or
place to which any person has access and which adjoins the
wall in which the terminal is situated, the terminal must be
protected by a guard of durable material. (A terminal guard
may be obtained from Chaffoteaux Limited).
The air inlet, products outlet duct and the terminal of the
heater must be not closer than 50 mm (2 in) to combustible
material. Detailed recommendations on protection of
combustible material are given in BS 5440 : 1.
Preparing the Wall
The heater should be installed on a wah of flat noncom-
bustible material that will not reverberate.
thickness of the wall, make a hole 240 mm (9.5 ins)
wide x 125 mm (4.9 ins) high. If
there is no need to line it, since the wall liner will seal
off the cavity.
A II$&N,M clearance of 75 mm (3.0 in) should be left
above the top of the wall opening. No allowance is neces-
sary at the side of the heater. For dimensions see Dia-
gramPage2.
the hole is cut
Whatever the
accurately
Slide the wall liner through the wall ensuring that it is
horizontal and that the flanged end is flush with the face of
the wall. Trim to length if necessary, so that the outer end
of the liner is level with the face of the outside wall. Make
good around the wall liner (fig. 1).
FITTING THE TERMINAL
The terminal is fitted from the outside of the building by
fixing the two spring loaded chains over the hooks on the
inside of the wall liner (fig. 2). If the chains can not be
fitted to the hooks, fit them into the slots on the flue
bend brackets. Turn the hook through 900 if necessary.
If access to the outside of the building is difficult, the
terminal can be raised on a length of string and the chains
attached from the inside. If this procedure is adopted, it
must be ensured that there is no risk of damage to the
terminal, the building, or danger to persons in or about
the building.
INSTALLING THE HEATER
The heater is attached to the wall by 2 studs at the top and
2 screws at the bottom. These are supplied with the gas
service tap and foam gasket, and packed in a box placed in
the flue outlet.
Remove the front case, place the heater in position and
mark the fixing holes. Drill and plug the wall, and fasten
the wall studs in position. These studs can be screwed in the
wall by fast locking two nuts together on the parallel
thread and then use a spanner. Attach the self adhesive
foam gasket to the flat surface of the heater around the air
inlet spigot on the heater. Pull off the protective paper
while sticking down the gasket. Lift the heater into position
on the wall, locating on the studs and the air inlet spigot
into the wall liner. Secure the heater to the wall using the
nuts, washers and wood screws supplied. Unscrew the
screws A (frg. 3), then lift off the flue bend. Slide the flue
duct through the rectangular hole in the wall box and
engage it into the terminal by at least 25 mm (1 in), and
onto the flue bend as far as it will go. The duct must be
cut to length where necessary (fig. 4). Replace the screws
securing the flue bend.
GAS CONNECTION
The gas service tap supplied should be fitted to the centre
connection below the heater using the “filter washer”. A
15 mm dia. copper tail is also provided for direct fixing to
the gas supply
Fig. I
Fig.
2
4
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