Chaffoteaux & Maury CORVEC CELT TS User manual

chaffoteauxltd.
CORVECCELTTS
EN26
CONFORMS WITH EUROPEAN STANDARD
(BS5386Ptl)
installation
servicingrequirements

contents
Page3 : TECHNICAL DATA
Pages4 and 5 : INSTALLATION
Pages6 and 7 : SERVICING INSTRUCTIONS
Pages8 and 9 : FAULT FINDING CHART
Page 10 : SHORT LIST OF SPARES
GENERAL
The Celt is a gasfired instantaneous water heater. In its basic form it is flueless but can be sup-
plied with a draught diverter.
It is designed to deliver hot water through a swivel spout or to a hot water tap at a sink or basin.
(IF). A remote model is also available (2F). The high pressure model is for use directly off the
mains, a low pressure model is supplied for useoff a tank supply.
Spout model - High pressure 1F. HP.
Spout model - Low pressure 1F. LP.
Remote model - High pressure 2F. HP.
Remote model - Low pressure 2F. LP.
The installation of the heater must be in accordance with the relevant requirements of the Gas
Safet
shouY Regulations, building Regulations and the Byelaws of the local Water Undertaking. It d be in accordance also with any relevant requirements of the local gasregion and local au-
thorny, and the relevant recommendations of the following British Standard Codes of Practice.
BS 5440 Flues and air supply for gasappliances of rated input not exceeding60 KW (1st and 2nd family gases).
Part 1 Flues
Part 2 Air Supply
BS 5482 Domestic butane and propane gasburning installations.
Part 1 Installation in permanent dwellings.
Part 2 Installation in caravans and non permanent dwellings.
Part 3 Installation in boats, yachts and other vessels.
2

technicaldata
LPG CATEGORY GAS 1,
Heatinput ........................................
Heatoutput .......................................
Gas rate ..................... Propane ...........
Butane . . . . ___. . . . .
Burner pressure. .............. Butane ............
Propane ...........
Main burner injector ...............................
Pilotinjector ......................................
Restrictor .........................................
Water flow rate raised 50 “C (90 OF)...................
Water flow rate raised 30 “C (54 'F) ...................
Minimum operating head for
normal pressure ...................................
,Maximum operating head for
normal pressure ...................................
Minimum operating headfor
lowpressure .......................................
Maximum operating head for
lowpressure .......................................
11.25 kW
8.7 kW
0.45 m3/h
0.81 kg/h
0.34 m3/h
0.82 kg/h
20 mbar
25 mbar
0.68 mm
0.15 mm
2.75 mm
150 l/hr
250 l/hr
0.45 bar 6.5 psi
10.0 bar 150 psi
1.3m 4.26 ft
24.0 m 80 ft
38,385 Btu/h
29,600 Btu/h
15.35 ft3/h
1.78 lbs/h
11.99 ft3/h
1.81 lbs/h
8inwg
10inwg
0.55 gpm
0.92 gpm
Note : the minimum water pressure is for the correct operation of the heater only. An additional allowance must be
made for the resistanceof the pipework and fittings.
Waterinlet ........................................
Wateroutlet ......................................
Gas ..............................................
Height ............................................
Height with draught diverter fitted. ...................
Width ............................................
Depth ............................................
Weight ...........................................
Clearance required for installation and servicing.
Top. ..............
Bottom ............
Sides..............
Front. .............
420 mm
540 mm
228 mm
203.5 mm
6.9 kg
600 mm
50 mm
75 mm
250 mm
15mm copper
swivel spout
l/2 in. bsp
16.5 ins
21.25 ins
8.98 ins
8.00 ins
15.25 lbs
24 ins
2 ins
3 ins
10 ins

installation
T
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A B C . Cl D E F G H J K
228 203.5 420 540 190 175 168 30 90 20 60
NOTICE
L 0
E
390 75 mm
This appliance is for use on LPG and must not be used on
any other Gas.
This heater is designed for installation over the sink to deli-
ver hot water either through a swivel spout or to a hot water
tap at a sink or basin.
The remote model is designed for direct connection to the
tap. These heaters must NOT be connected to a bath hot
water draw off, on run continuously for more than 5 minu-
tes.SeeBS 5546.
4

installation
VENTILATION
Important : This heater should be used in a well ventilated
room. An air vent direct to outside is required of not less
than 35 cm2 free area, plus an openable window in the room
or internal spacein which it is installed. These heaters must
NOT be fitted in a spacewhere the total volume is lessthan
6 m3.
FIXING
The heater will be received with ‘the outer cover in position.
All the necessarywater, gasfittings and knobs will be found
in a separatepackageinside the carton.
Remove the four screws (two top, two bottom, rear of hea-
ter). The outer cover & flue deflector can the be removed by
pulling forwards.
When selecting a position for the appliance there must be a
minimum clearance of 600 mm (24 in) between the top of
the appliance and a ceiling.
If the heater is to be fitted to a wall likely to be effected by
heat the wall MUST be protected by a sheet of incombusti-
ble material.
The heater should be hung on the wall by means of fixing
screws.It is recommended that the heater be positioned 5’ 6’
(1,7 m) above the floor for convenience of adjustment and
maintenance.
It is secured using four fixing screws (two top and two bot-
tom) or by using the. bracket provided together with. two
screwsasthe bottom of the heater.
GAS CONNECTION
The heater should be provided with a suitable gas service
tap.
The connection on the heater is 12m copper tube.
WATER CONNECTION
The water inlet is suitable for connection to a 15 mm copper
supply pipe.
The supply to a high pressure model must be connected
from the mains supply.
Permission from the local Water Authority must be obtai-
ned before connecting the heater to the main supply.
A head of 15 ft. is required to ensure satisfactory operation
of the heater at a minimum flow of 0.44 g.p.m:
Fit spout (1 F model)
The hot water draw-off may be connected directly to the
base of the heater, using 12 mm copper pipe and the outlet
bend provided (2 F model).
FITTING OF DRAUGHT DIVERTER
Fit clip to flue deflector using nut and bolt provided. Fig. 1.
Where it is necessary to tit a draught diverter remove the
flue deflector. Fit the front facia securing with self tapping
screw-center front. Fit draught diverter and secure with two
screwsat rear. The flue should be run in 75 mm steel flue to
BS 715 and terminate with an approved terminal in accor-
dance with BS 5440 Pt. 1.
PUTTING INTO SERVICE
Open the gasand water service taps. Purge the gasand water
supplies. Check for gasand water soundness.
Fit the gascontrol knob and light the pilot by turning 90” an-
ti-clockwise. It may be necessaryto wait for the pilot to pur-
ge, if so, wait a few moments then turn to the ‘off position
and repeat.
Turn the gascontrol fully anti-clockwise to the main gaspo-
sition.
TURN on the tap, the heater will now light.
Check for gassoundness.
Check the burner pressure by fitting a gaugeon to the pres-
sure test point on the end of the burner manifold before ligh-
ting the appliance. Light the appliance and check for the
‘correct pressure. The correct pressure is given in Table 1,
page 3. If the pressure is not correct, check the pressure at
,the gasbottle. This should be 37 mbar (14 inwg) for propane
and 28 mbar (11 in wg) for butane. The heat input is pre-set
.andnon-adjustable.
Remove the gascontrol knob. Replace the front case.Repla-
ce the flue cap where applicable. Replace gas control knob,
water tap knobs and water temperature selector knob. The
temperature selector spindle should be screwed fully in, and
the knob then positioned opposite (+). Hand the User’s Ins-
tructions to the consumer and instruct in the safe operation
of the heater.
Fig. 1
5

servicinginstructions
Turn off the gasat the gasinlet tap and water at the inlet wa-
ter service tap before commencing servicing. Before servi-
cing the gas or water sections it will be found easier if the
heating body is removed.
1) Front Casing
- To remove casing.
- Pull off the gascontrol knob, the temperature selector but-
ton, and the handles of the taps.
- Remove 4 screws(2 top, 2 bottom).
- Remove the outer cover by pulling forward.
2) Burner (fig. 2).
- Unscrew the pilot tube clamping screw A., releasesample
tube and remove clamp and tube.
- Remove burner manifold by unscrewing fixing screwsB.
- Pull burner head assembly forward to remove, take care
not to trap the thermocouple or ignitor wires.
- The burner headscan be cleaned by’brushing.
- Replace in reverse order, make sure that the gasket bet-
ween the manifold and the gas section is in place and that
the burner head assembly is correctly located on the spigot
at the rear.
3) Heating Body
- With the front casing unscrewing removed, the heating
burner and flue body can be inspected and cleaned in posi-
tion.
- To remove, drain the heater by unscrewing the water regu-
lator A (fig. 6) collecting the water in a basin below the hea-
ter (SeeSect.9).
- Remove the burner, seeSection 2.
- Remove the screw holding the bottom of the heating body
skirt to the rear case.
- Releasethe two union nuts joining the heating body legsto
the water section.
- Remove the heating body lifting upward off top bracket.
- Clean the heating body by brushing with hot water and de-
tergent.
- Re-assemble in reverse order, do not forget to replace the
skirt fixing screwand reinforcing strip.
4) Pilot (fig. 3).
- Remove front casing, seeSect. 1.
- Unscrew the pilot tube clamping screw A and remove the
clamp and tube (fig. 2).
- Blow through the tube to remove any dust.
- Remove the burner, seesection 2.
- Unscrew the knurled pilot burner outer ring A (fig. 3).
- Unscrew the pilot body B with a 15mm spanner or an ad-
justable spanner. It may be necessaryto remove the heating
body. Clean by blowing or washing in water. Do not clean
the holes with a wire.
- Blow any dust out of the gassection.
- Re-assemblein reverseorder.
- Pilot flame height should be approx. 7 m.m.
5) Thermocouple (fig. 4 and 5).
- To replace.
- Remove front casing,seeSection 1.
- Remove the burner, seeSection 2.
- Remove the pilot, seeSection 4.
- Unscrew the thermocouple nut A from the thermo-electric
valve and remove it from the wire (fig. 5).
- With a 7 m.m box spanner, unscrew the nut E (fig. 4) hol-
ding the thermocouple into the gassection.
- Thread the thermocouple and wire up through the gassec-
tion.
- Replace in reverseorder.
Thermocouple output should not be lessthan 15 m.v. The
m.v. output should be checked with a m.v. meter.
6) Spark Electrode (fig. 4).
- To replace.
- Remove front casing,seeSection 1.
- Remove the burner, seeSection 2.
- Remove the electrode fixing screw F with a screwdriver
placed inside the heating body skirt.
- Pull off the electrode cable from the piezo cartridge.
- Lift the electrode out of the gassection.
- Re-assemble in reverse order, and note that the slot in the
connector on the end of the electrode cable is vertical when
pushed on to the cartridge.
7) Thermoelectric Valve.
- Remove front casing, seeSection 1.
- To replace, remove the thermocouple nut A (fig. 5).
- Unscrew cap from the side of the gassection and withdraw
the thermoelectric valve.
- Re-assemblein reverseorder.
Note : This heater is fitted with a safety interlock. When the
pilot is turned off the heater can not be relit until the ther-
mocouple cools down and the lighting sequenceis repeated.
Fig. 2 Fig. 3
6

servicinginstructions
8) Main Gas valve. - Turn off gasat service tap.
- Remove front casing, seeSection 1.
- To inspect and clean, remove burner, seeSection 2.
- Disconnect the thermocouple and the ignitor lead.
- Remove the four fixing screws fastening the top of the gas
section to the base.Also the two screwsat the back holding
it to the rear case.
- Lift the gassection top offthe base.
- Remove the gasvalve spring.
- Lift out the gasvalve.
- Clean the valve seating.
- Check movement of push rod. Clean if necessary.
- Replace the facing rubber if necessary.
- Replace in reverseorder.
- Unscrew the union nut attaching the tap to the heater.
- Lower the union nut and withdraw the filter.
- Replace filter if necessary(G. fig. 7).
- Replace in reverseorder.
12) To replace the Piezo Ignitor Cartridge.
- Pull off the electrode lead from the cartridge.
- Remove the screw holding the gascontrol cam.
- Pull the cam off the spindle.
- Remove the two screwsholding the retaining plate in posi
tion.
- Remove the plate and then Piezo Cartridge.
- Replace in reverse order, note the slot in the end of the
electrode cable is vertical when pushed on to the Piezo.
9) Diaphragm (fig. 6).
- To replace, turn off the cold water supply and gas. 13) Heat Input.
- Remove casing, seeSection 1.
- Drain the heater by removing the water governor plug A
situated in the baseof the water section.
The heat input is pre-set and non-adjustable. The heat input
and burner pressure should be checked against Table 1. by
fitting gauge to the pressure test point on the burner mani
- Unscrew the water unions B on the water section. fold.
- Unscrew the six screwsC holding the water section to the
gassection.
- Remove the water section complete with the diaphragm
and bearing plate.
If the gas rate is not correct, check the working pressure at
the pressure test point on the test point on the storagecylin-
der and adjust the pressure regulator in accordance with the
data in Table 1, the gasinstallation should be examined for
any possible blockage if the pressureis incorrect.
- Replace in reverse order - NOTE - fit the water governor
last. It is easier if the cold water inlet connection is partially
engagedbefore fitting the screwsand reconnecting the union RECOMMENDED SERVICING SCHEDULE.
nuts.
10) Water Governor
For efficient and trouble free operation, it is recommended
that this heater is serviced annually. The following work
should be carried out by a competent person.
- To clean, turn off the cold water supply to the heater.
- Remove casing, seeSection 1.
- Remove the governor situated in the baseof the water sec-
tion A (fig. 6).
- Clean the components with water.
- Check that the spring loaded piston moves freely.
- Replace in reverseorder.
11) Gas Filter (fig. 7).
A gasfilter is fitted between the gasservice tap and the hea-
1) Clean the burner.
2) Clean the heating body. (In hard water areas it may be
necessaryto descalethe heating body).
3) Clean the pilot and thermocouple.
4) Replace the gasfilter.
5) Clean the water governor.
6) Change the diaphragm asnecessary.
7) In hard water areas it may be necessary to descale the
heating body. Use a solution consisting of 5 parts water to 1
ter. Dart hvdrochloric acid. The water should ureferablv be hot -
- To clean, remove front casing,seeSection 1. ADD ACID TO WATER, NOT WATERTO ACID.
Fig. 7
Fig. 5 Fig. 6
7

fault findingchart
2ROBLEM CAUSE REMEDY
PILOT FLAME DOES NOT
LIGHT
i) Gasservicecock closed Open servicecock
ii) Air in pipe Purge line
iii) Pilot injector blocked Clean or change
iv) Main filter blocked Changefilter
POORPILOT FLAME
i) Pilot injector dirty/damaged
ii) Wrong injector
iii) Pilot head blocked
iv) Faulty pilot tube
v) Main filter restricted
Clean or change
Changefor correct diameter
Clean
Clean or replace
Changefilter
PILOT WILL NOT
STAY ALIGHT
i) Thermocouple not working
ii) Thermoelectric valve faulty
iii) Gaspressurelow/variable
iv) Gaspressure too high
Changethermocouple
Changevalve
Check at inlet to heater
Check pressure at meter
MAIN BURNER DOES NOT
LIGHT
i) Gasservicetap not open fully
ii) Gaspressurelow
iii) Water rate low
iv) Gasvalve push rod jammed
v) Diaphragm
vi) Gastap
vii) Injector size
Open fully
Check at manifold and at inlet
with heater running
Check ifwater rate is sufficient (page3
Clean rod
Changediaphragm
Check operation of User’s gas
control tap
Check burner injectors are for
natural gas0,6S mm diameter
EXPLOSIVE IGNITION i) Pilot Check.length is 7 mm and clean
injector if necessary
WATER TEMPERATURE LOW
i) Water rate too high
ii) Insufficient gasflow
iii) Water governor sticking
Check water regulator rate
Check gasrate and that the gas
servicecock and user’s control
are open
Remove and clean or replace
I
8

fault findingchart
PROBLEMPROBLEM
BURNER STAYS ON
BURNER STAYS ON
YELLOW FLAMESYELLOW FLAMES
SOOT FORMEDSOOT FORMED
UNSTABLE FLAMESUNSTABLE FLAMES
I
HEATING BODY NOISEHEATING BODY NOISE
INSUFFICIENT WATER FLOWINSUFFICIENT WATER FLOW
CAUSE
i) Air in draw off
ii) Gasvalve push rod jammed
hi) Gasvalve “letting by”
iv) Loosejumper on house stop cock
v) Dead-leg on system
vi) Dirt in water section
i) Heating body fms blocked
ii) Primary air supply restricted
iii) Wrong injector
i) Water in gasline
ii) Inlet pressure too high for governor
iii) Faulty flue
REMEDY
Purge line
Clean push rod
Changevalve facing
Replace water stopcock or pin down
jumper
Vent or remove
Clean water section
Remove heating body and clean
Check manifold
Check gastype and injector
Purge
Check pressure
Check flue
HEATER SMELLS
WHEN NEW
HIGH WATER FLOW
i) Scale
i) Water servicetap partly closed
ii) Low water pressure
iii) Water governor faulty
iv) Water governor sticking
v) Foreign matter in water section
i) Appliance newness
Descaleheating body
Check it is fully opened
Check water pressure
Changegovernor
Remove and clean or replace
Remove and clean
Smell will go within a short period
of time
i) Water governor sticking Replace
9

Shortlist
19 4 5 6 7 90
78 77 76a
80
Key
No
4
ii
1;
76a
76b
2
ii;
8”:
86a
1::
101
102
105
116
138
139
Description
Gas control knob ..........................................................................
Temperature selector knob .............................................................
Knob - hot water ..........................................................................
Knob - cold water .........................................................................
Wall bracket ................................................................................
Gas supply pipe 12mm .................................................................
Nut ............................................................................................
Olive ..........................................................................................
Gas connection ............................................................................
Gasfilter ....................................................................................
Washer - gasconnection to gassection ..............................................
Thermocouple .............................................................................
Electrode and lead assembly ...........................................................
Thermoelectric valve ..
..................................................................
Piezo cartridge .............................................................................
Washer .......................................................................................
Water service cock ._._
....................................................................
Washer .......................................................................................
Diaphragm ..................................................................................
Tap washers ................................................................................
Nut (water inlet bend) ....................................................................
Water inlet bend ...........................................................................
CHAFFOTEAUX LIMITED
Concord House Brighton Road
Salfords - Redhill
SURREY RHl 5 DX
HORLEY(02934)72744
Makers
Pt.No.
39987
34392
32120
.32119
44172
61745
3990
3989
22063/30
36938
22833/10
37830
34239
34346
20267
22829/14
45993
22829/14
25809/10
5579
29516
41594

Notes

ESPOOS