Ariston AS 150 Technical information

Instructions
for Installation,
Servicing and Use
LEAVE THESE INSTRUCTIONS
WITH THE END-USER
Unvented Hot
Water Storage
Cylinders
TABLE OF CONTENTS
1.
GENERAL INFORMATION
1.1 DELIVERY
2.
INSTALLATION
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
2.10
2.11
2.12
WATER REGULATIONS
BUILDING REGULATIONS
HOW THE APPLIANCE WORKS
OVERALL DIMENSIONS
COLD WATER SUPPLY
SITING AND FIXING
CONNECTION OF MAINS WATER SUPPLY
COLD WATER COMBINATION VALVE
CONNECTION TO SERVICES
SECONDARY RETURN
DISCHARGE PIPEWORK
ELECTRICAL DIAGRAMS
3.
COMMISSIONING
4.
MAINTENANCE
4.1
4.2
4.3
4.4
4.5
PROTECH ANTI-CORROSION SYSTEM
THERMAL CUT-OUT(S)
IMMERSION HEATER(S)
UNVENTED CONTROLS
THERMOSTATS
5.
FAULT FINDING
6.
TECHNICAL INFORMATION
2
1.
GENERAL
INFORMATION
This manual is an integral and essential part of the product. It should be kept
with the appliance so that it can be consulted by the user and our authorised
personnel.
Please read carefully the instructions and notices about the appliance
contained in this manual, as they provide important information regarding the
safe installation, use and maintenance of the cylinder.
Failure to do so may invalidate the guarantee.
1.2
DELIVERY
The range is available with the following options:
The Wall-hung range (50, 75, 100 litre models), which are supplied as the
following;
One box containing;
1) The cylinder with factory fitted temperature & pressure relief valve,
immersion heater and thermostat with thermal cut-out.
One box containing;
1) Unvented control pack (expansion vessel, 2 piece cold water combination
valve and tundish), instructions for installation, servicing and use and the
Benchmark log book).
The Ariston Contract floor-standing range (125, 150, 200 and 300 litre
models).
The Contract is supplied with the following;
One box containing;
1) The cylinder with factory fitted temperature & pressure relief valve.
One box containing;
1) Unvented control pack (expansion vessel, 2 piece cold water combination
valve and tundish), motorised valve (indirect only). Immersion heater(s)
and thermostat(s) with thermal cut-out(s), cylinder thermostat with
thermal cut-out (indirect only), feet (x3), instructions for installation,
servicing and use and the Benchmark log book.
The High Capacity floor-standing range (500 litre models), which are
supplied as the following;
One box containing;
1) The cylinder with factory fitted temperature & pressure relief valve.
1) Unvented control pack (expansion vessel, 2 piece cold water combination
valve and tundish), motorised valve (indirect only). Immersion heater(s)
and thermostat(s) with thermal cut-out(s), cylinder thermostat with
thermal cut-out (indirect only), feet (x 3), instructions for installation,
servicing and use and the Benchmark log book.
3
2.
INSTALLATION
2.1
WATER REGULATIONS
These regulations (byelaws in Scotland) ensure a good supply of
wholesome water, and that only approved materials, pipes and fittings are
used to convey water.
2.2
BUILDING REGULATIONS
These are a statutory document and take priority over all other regulations
and recommendations. The installation of an unvented hot water storage
cylinder is classified as a “Controlled Service” and Regulation G3 applies. To
meet the requirements of the Regulation, installation of an unvented system
should be undertaken by a “competent installer”.
All installations of unvented hot water storage systems having a capacity of
more than 15 litres should be notified to the relevant Local Authority by
means of building notice or by the submission of full plans. It is important to
note that it is a criminal offense to install an unvented hot water storage
system without notifying the Local Authority. The installation of the
unvented cylinder and hot water installation must comply with BS 6700 and
the HSE Legionella Code of Practice.
2.3
HOW THE APPLIANCE
WORKS
The immersion heater(s) are controlled through a thermostat which senses
the water temperature. The operating temperature can be pre-set by
adjusting the spindle in the head of the thermostat. In addition to the
thermostat there is a thermal cut-out incorporated if the thermostat fails and
the water temperature rises too high. Once the cut-out operates it can only
be re-set manually after the fault has been rectified.
Indirect models have dual thermal controls. In addition to the above there is
a separate cylinder thermostat and thermal cut-out for controlling the indirect
circuit. Again the thermal cut-out operates if the cylinder thermostat fails, by
disconnecting the live feed (call for hot water) from the programmer.
All High Capacity 500 litre models, Wall-hung units and the Contract and
Floor-standing models utilise the ProTech anti-corrosion system (electronic
anode).
The factory fitted temperature & pressure relief valve at the top of the
cylinder is a safety device to back-up the thermostat(s) and thermal cutout(s). It works by sensing an excess in water temperature or pressure and
releasing the hot water into a discharge tundish and drain.
The cylinder will only work in the vertical position. The inlet pipe needs to
deliver cold water to the bottom of the tank. When water is heated it
expands. To accommodate this increase in volume an expansion vessel is
provided. A cold water combination valve is also provided in two pieces,
loose jointed for ease of installation. These comprise a combined line
strainer/pressure reducing valve and core non-return valve/expansion relief
valve.
The strainer prevents any debris entering the other controls. The pressure
reducer ensures the correct operation of the expansion vessel, and prevents
any damage to the control valves through too great a pressure.
The non-return valve ensures the water expansion is forced into the
expansion vessel and prevents contamination of the mains cold water
supply. The expansion relief valve will discharge expanded water to the
discharge tundish if the expansion vessel fails.
4
2.4
OVERALL DIMENSIONS
2.5
COLD WATER SUPPLY
It is important to ensure that the cold water main is capable of supplying the
increased demand which will be imposed on it. Hot and cold water are both
drawn off the same source of supply. Remember, there will not be a storage
tank to help compensate for variations in the demand on the system.
A minimum pressure of approximately 1.5 bar and 20 litres per minute is
required for satisfactory operation. 85% of UK dwellings have a mains
pressure above 2.0 bar.
NOTE: THE MAINS WATER SUPPLY MUST NOT EXCEED 16 BAR.
2.6
SITING AND FIXING
The cylinder should be left packed until it is time to install. When unpacking
the appliance follow the guidelines within the packaging and take care not to
damage the temperature and pressure relief valve.
The cylinder may be installed at any convenient position, as it is connected
to the mains cold water supply, it is equally effective on any floor, however,
consideration must be given to allow ease of access for maintenance
purposes.
However, do not install the unit in premises which may be subject to
freezing. Ensure that the floor load bearing strength is adequate to take the
weight of the cylinder when full of water (see TABLE 1).
The ST50, ST80 and ST100 models are wall mounted. All other models are
free standing. These are supplied with feet which are attached to the heater
via self-tapping screws which are also supplied. All units must be installed in
the VERTICAL POSITION.
For maintenance purposes leave at least 500 mm free space in front of the
unit, for access.
5
2.7
CONNECTION OF MAINS
WATER SUPPLY
For Contract, and High Capacity models:
On the front of the unit there is a label to identify the connection ports.
Please check this before making any connection to the unit.
For units up to 300 litres it is recommended that all mains cold water supply
pipe work is a minimum of 22mm, with the exception of model ST50 where
15mm can be used. For 500 litre models the supply should be 28mm. An
isolating valve should be installed between the cold water supply and the
cylinder for servicing. ALL PIPEWORK MUST BE FLUSHED TO AVOID
DAMAGE TO THE CONTROL VALVES.
Please refer to FIGS. 2.1, 2.2, 2.3, 2.4, 2.5 for a suggested installation layout.
WALL-HUNG ST 50-80-100
PRESSURE + TEMPERATURE
RELIEF VALVE
COLD
MAINS-IN
15/22mm
15mm
EXPANSION
VESSEL
COMBINATION
VALVE
HOT SUPPLY
15/22mm
EXPANSION
RELIEF
PIPE
TUNDISH
CONTRACT STD 100-125-150-210-300 DIRECT
22mm
COMBINATION
VALVE
MAX. 100mm
COLD
MAINS-IN
22mm
EXPANSION
VESSEL
PRESSURE + TEMPERATURE
RELIEF VALVE
FIG. 2.1
HOT SUPPLY
22mm
EXPANSION RELIEF
PIPE
SECONDARY
RETURN
TUNDISH
22mm
DRAIN
MAX. 100mm
FIG. 2.2
6
CONTRACT STI 125-150-210-300 INDIRECT
COMBINATION
VALVE
COLD
MAINS-IN
22mm
EXPANSION
VESSEL
PRESSURE + TEMPERATURE
RELIEF VALVE
HOT SUPPLY
22mm
HIGH CAPACITY 500 STD UK DIRECT
EXPANSION RELIEF
PIPE
SECONDARY
RETURN
TUNDISH
COLD
MAINS-IN
28mm
ZONE
VALVE
COMBINATION
VALVE
FLOW
EXPANSION
VESSEL
22mm
DRAIN
HOT SUPPLY
28mm
PRESSURE +
TEMPERATURE
RELIEF VALVE
RETURN
MAX. 100mm
EXPANSION RELIEF
PIPE
FIG. 2.3
SECONDARY
RETURN
HIGH CAPACITY 500 STI UK INDIRECT
TUNDISH
COLD
MAINS-IN
28mm
22mm
COMBINATION
VALVE
DRAIN
EXPANSION
VESSEL
HOT SUPPLY
28mm
MAX. 100mm
PRESSURE +
TEMPERATURE
RELIEF VALVE
FIG. 2.4
EXPANSION RELIEF
PIPE
SECONDARY
RETURN
ZONE
VALVE
TUNDISH
FLOW
22mm
DRAIN
RETURN
MAX. 100mm
FIG. 2.5
7
2.8
COLD WATER
COMBINATION VALVE
The cold water combination valve can be connected either close by
the unit or alternatively it may be installed in a remote position from
the unit as there is no requirement to site it in close proximity to the
cylinder. This allows a flexible and convenient installation. However, it
is important to note allowances for the discharge pipe work from the
expansion relief valve must be accounted for.
A balancing port is supplied on the 22mm valves (for units above 50
litres) and 28mm valves (for 500 litres units) allowing balanced cold
water supply to the rest of the building giving constant results for
mixer and shower valves. If the facility is not needed a plug is
supplied. Refer to FIG. 2.7 and FIG. 2.8
Although this facility is not built into the 15mm valve (supplied with
model ST50), a tee piece may be inser ted between the two
components giving the same result. Refer to FIG. 2.6
SERVICEABLE 1/2” PRESSURE
REDUCING CARTRIDGE AND
LINE STRAINER
NON-RETURN
VALVE (WITHIN HOUSING)
EXPANSION RELIEF
VALVE (SET AT 6 BAR)
15mm
COLD
MAINS IN
15mm
TO CYLINDER
TEE PIECE
FOR BALANCED
COLD WATER
TAKE OFF
(NOT SUPPLIED)
FIG. 2.6
3/4” B.S.P. CONNECTIONS
FOR EXPANSION VESSEL
For Model ST 50
8
3/4” B.S.P. CONNECTION
FOR EXPANSION VESSEL
22mm COLD
MAINS IN
3.5
6 BAR
SERVICEABLE 3/4” PRESSURE REDUCING
CARTRIDGE AND LINE STRAINER
(SET AT 3.5 BAR)
22mm TO WATER HEATER
15mm EXPANSION RELIEF
OUTLET TO TUNDISH
EXPANSION RELIEF VALVE
(SET AT 6 BAR)
22mm COLD
MAINS IN
22mm TO CYLINDER
NON-RETURN VALVE
(WITHIN HOUSING)
22mm BALANCED COLD WATER TAKE OFF
WITH NON-RETURN VALVE
FIG. 2.7
SERVICEABLE 1” PRESSURE REDUCING
CARTRIDGE AND LINE STRAINER
(SET AT 3.5 BAR)
EXPANSION RELIEF VALVE
(SET AT 6 BAR)
28mm COLD
MAINS IN
28mm TO
CYLINDER
3/4” B.S.P. CONNECTION
FOR EXPANSION VESSEL
FIG. 2.8
1” BALANCED COLD WATER TAKE OFF
WITH NON-RETURN VALVE
9
For 500 litre
Models
2.9
CONNECTION TO SERVICES
It is recommended that a 22mm pipe run should supply the outlets
throughout the building, especially to baths and showers. Short runs of
15mm pipe may be used to connect basins and sinks.
2.10
SECONDARY RETURN
On floor-standing models a secondary return may be fitted (consult the label
on the face of the unit for the correct location). A non-return valve (not
supplied) must be fitted to prevent back flow and a bronze pump will be
needed in conjunction with a pipe thermostat to circulate the hot water (both
not supplied).
NOTE: an extra expansion vessel may be required where the additional
volume of the secondary return exceeds the capacity of the expansion
vessel supplied.
2.11
DISCHARGE PIPEWORK
1) The tundish must be vertical and fitted within 500mm of the temperature
& pressure relief valve and must be located with the cylinder. The tundish
must also be in a position visible to the occupants, and positioned away
from any electrical devices. The discharge pipe from the tundish should
terminate in a safe place where there is no risk to persons in the vicinity
of the discharge and to be of metal.
2) Discharge pipes from the temperature & pressure relief and expansion
relief valve may be joined together.
3) The pipe diameter must be at least one pipe size larger than the nominal
outlet size of the safety device unless it's total equivalent hydraulic
resistance exceeds that of a straight pipe 9m long.
I.e. Discharge pipes between 9m and 18m equivalent resistance length
should be at least 2 sizes larger than the nominal outlet size of the safety
device. Between 18m and 27m at least 3 larger, and so on.
Bends must be taken into account in calculating the flow resistance.
See FIG. 2.9 and TABLE 2.
4) The discharge pipe must have a vertical section of pipe at least 300mm
in length, below the tundish before any elbows or bends in the pipework.
5) The discharge pipe must be installed with a continuous fall.
6) The discharge must be visible at both the tundish and the final point of
discharge, but where this is not possible or practically difficult; there
should be clear visibility at one or other of these locations. Examples of
acceptance are:
i) Ideally below a fixed grating and above the water seal in a trapped
gully.
ii) Downward discharges at a low level; i.e. up to 100mm above
external surfaces such as car parks, hard standings, grassed
areas etc. These are acceptable providing that where children
may play or otherwise come into contact with discharges, a wire
cage or similar guard is positioned to prevent contact, whilst
maintaining visibility.
iii) Discharges at high level; I.e. into a metal hopper and metal down
pipe with the end of the discharge pipe clearly visible (tundish
visible or not). Or onto a roof capable of withstanding high
temperature discharges of water 3m from any plastic guttering
systems that collect would such a discharge (tundish visible).
iv) Where a single pipe serves a number of discharges, such as in
blocks of flats, the number served should be limited to not more
than 6 systems so that any installation can be traced reasonably
easily. The single common discharge pipe should be at least one
pipe size large than the largest individual discharge pipe to be
connected. If unvented hot water storage systems are installed
where discharges from safety devices may not be apparent I.e. in
dwellings occupied by the blind, infirm or disabled people,
10
consideration should be given to the installation of an
electronically operated device to war n when discharge takes
place. Note: The discharge will consist of scalding water and
steam. Asphalt, roofing felt and non-metallic rainwater goods may
be damaged by such discharges.
Temperature & pressure
relief valve
Metal discharge pipe (D1) from
temperature & pressure relief valve.
to tundish.
Tundish
500mm Max.
300mm
Min.
Discharge below
fixed grating.
(see page 10 for
alternative points
of discharge).
Metal discharge pipe (D2) from tundish
with continuous fall. See Table 2 and worked
example.
Fixed grating
Trapped gulley
FIG. 2.9
TABLE 2. Sizing of copper discharge pipe “D2” for common temperature valve outlet sizes.
Valve outlet size
Minimum size of
discharge pipe D1*
Minimum size of
discharge pipe D2*
from tundish
Maximum
resistance allowed,
expressed as a
length of pipe (i.e.
no elbow or bends)
Resistance created
by each elbow or
bend
G 1/2
15mm
G 3/4
22mm
G1
28mm
22mm
28mm
35mm
28mm
35mm
42mm
35mm
42mm
54mm
Up to 9m
Up to 18m
Up to 27m
Up to 9m
Up to 18m
Up to 27m
Up to 9m
Up to 18m
Up to 27m
0.8m
1.0m
1.4m
1.0m
1.4m
1.7m
1.4m
1.7m
2.3m
WORKED EXAMPLE
The example below is for a G 1/2 temperature & pressure relief valve with a
discharge pipe (D2) having 4 no. elbows and length of 7m from the tundish to
the point of discharge.
From TABLE 2;
Maximum resistance allowed for a straight length of 22mm copper discharge
pipe (D2) from G 1/2 temperature & pressure valve is 9m. Subtract the resistance
for 4 no. 22mm elbows at 0.8m each = 3.2m. Therefore the maximum permitted
length equates to: 5.8m. As 5.8m is less than the actual length of 7m therefore
calculate the next largest size.
Maximum resistance allowed for a straight length of 28mm pipe (D2) from G 1/2
temperature & pressure valve equates to: 18m. Subtract the resistance for 4 no.
28mm elbow at 1.0m each = 4m. Therefore the maximum permitted length
equates to: 14m
As the actual length is 7m, a 28mm (D2) copper pipe will be satisfactory.
11
WARNINGS
The outlet from the temperature & pressure relief valve must not be used for
any other purpose. This also applies to the expansion relief valve. No other
valve is to be fitted between the cold water combination valve and the
cylinder.
The temperature & pressure relief valve must not be removed in any
circumstances. Any of the above will totally invalidate the guarantee.
2.12 ELECTRICAL
CONNECTION
The electrical installation must be in accordance with the current I.E.E.
wiring regulations.
PROTECH ELECTRONIC ANTI-CORROSION SYSTEM
I MPORTANT : The ProTech anti-corrosion system MUST be permanently
connected to a 240V electricity supply see FIG 2.10.
Anode circuit
L 1
N
Electronic anode
FIG. 2.10
240V~
The ProTech system, an exclusive solution, is an electronic anti-corrosion
protection system which ensures maximum longevity of the appliance,
regardless of water quality. The electronic circuit creates a difference in
potential between the hot water tank and the titanium electrode, thereby
guaranteeing optimum protection of the tank and preventing corrosion.
To ensure the proper operation of the protection system, IT MUST BE
PERMANENTLY CONNECTED TO A FUSED NON-SWITCHED 240V, 3A
ELECTRICITY SUPPLY even in the event of shut-down of the system. To
prevent risk to the appliance’s lifespan when disconnecting the protection
system for an extended period of time, it is necessary to drain the appliance
beforehand.
In addition to the 240V network, the electronic circuit is also connected to
the tank, which is to be protected, and to the titanium protection electrode,
12
INFORMATION FOR THE END USER
Proper operation of the protection system is shown by a continuous green
L.E.D, indicating that the circuits terminals are being supplied with electricity.
In the event of failure, a red L.E.D. indicates that there is a short-circuit
between the electrode and the cylinder tank, that one of the leads (tank or
electrode) is disconnected or that there is no water in the cylinder.
Your appliance is thus properly protected when the green L.E.D. is
illuminated and the red L.E.D. is off. Should this not be the case, please
contact your installer.
FITTING IMMERSION HEATER(S) (CONTRACT MODELS ONLY)
These are supplied but not fitted with the Ariston Contract floor-standing
range. A sealing gasket is supplied with each element, however the use of a
suitable sealing compound is recommended to ensure a correct seal. Care
must be taken not to cross thread the immersion heater(s) when fitting. Each
immersion heater is supplied with a regulation thermostat and manual reset
thermal cut-out. This will activate if the regulation thermostat fails. Under no
circumstances should this be by-passed. The immersion heaters supplied
are rated at 3kW, there are 4kW upgrade kits available on request, (the part
number for which is 889112). Should the immersion heater(s) be ugraded to
the 4kW immersion, the electrical circuit and fuse must be checked to
ensure suitability with the higher output. Although the immersion heaters
are a standard 21/4” thread, they must not be substituted with anything but an
original Ariston spare part.
DIRECT SYSTEMS
A mains supply of 240V, 3kW (13 amps) is required. Heat resistant cable,
round 3 or 4 core 2.5mm2 (to BS6141 table 8) must be used to connect the
electrical supply through the Economy 7 time control switch using either
system ‘A’ or ‘B’ as illustrated in FIG. 2.11.
SYSTEM A
SYSTEM B
FIG. 2.11
13
2.11
ELECTRICAL DIAGRAM
Should the Economy 7 system not to be used, a separate 13 amp supply to
each element will be required. Through a double pole fused isolating switch
having a contact gap of at least 3mm on each pole.The immersion heater
shall be installed with 85°C rubber insulated HOFR-sheathed flexible cable
complying with Table 8 of BS 6141: 1991. Make the connection(s) to the
immersion heater(s) as per FIG. 2.12 and FIG. 2.13. For High Capacity 500
litre models consult the wiring diagram on the reverse of the inspection
panel.
Single Element
THERMAL
CUT-OUT
THERMOSTAT
ELEMENT
3 kW
L1
N
240V~
FIG. 2.12
THERMAL
CUT-OUT
THERMOSTAT
L1
DAY ELEMENT
3 kW 240V~
N
THERMAL
CUT-OUT
THERMOSTAT
L2
NIGHT ELEMENT
3 kW 240V~
ECONOMY 7
N
FIG. 2.13
The thermostat(s) on the immersion heater(s) should be adjusted to trip at
60°C. This is the ideal temperature to prolong element life in hard water
areas. Scale on the sheath builds up more rapidly at temperatures above
this causing the element to overheat and premature failure can occur. Higher
temperatures without additional controls would result in scalding.
In addition to the thermostat the thermal cut-out will switch power off to the
element should the thermostat malfunction, causing an excessive rise in
water temperature. The thermal cut-out can be reset manually after the fault
has been corrected.
14
1
2
Cylinder
thermostat
Thermal
cut-out
P
1
8
P
6
2
Not
used
L
N
240V
MAINS INPUT (13 AMP)
FIG. 2.14
15
L1
240V~
N
Thermal
cut-out
Sangamo 410 Form 1
Link 3-6
Sangamo M5
Link 1-6
8
8
1
2
2
4
4
E
E
E
E
E
4
4
N
7
5
N
N
3
3
L
6
6
L
L
2
E
E
HTG
ON
E
N
N
N
N
2
2
1
L
L
L
L
1
1
2
2
PROGRAMMER
4
3
Randall 922, 972
Link L-2-5
Randall 3020 P
and 3060
4
6
HW
ON
3
10
10
ACL LS522, LS722
6
Towerchron MP
Link 1-4/6-11
Towerchron 2000
6
Towerchron FP
Link 1-5/4-7-9
3
1
• 3
E
Thermostat
ELEMENT
3 kW 240V~
PROGRAMMER
1
1
3
1
Randall 102/102 E
Link 3-6
Randall 701, 702
Link L-6-5
3
Potterton EP2000/3000 Link L-5 EP2001/3001
4
3
Potterton Miniminder
6
Sunvic DHP 2201
E
PL
PL
Potterton Profile/Suprima
PL
For ARISTON, Vaillant, Vokèra,
Burco Maxol and other makes, refer
to manufacturers instructions.
Myson Apollo
(remove all links)
Ideal Mexico Super 2
LP
9
Halstead Balmoral range
Halstead Blenheim range
2
E
E
E
E
E
E
E
E
E
E
E
E
3
N
N
N
N
N
N
N
N
N
N
N
N
2
BOILER
SL
ON
LB
2
6
1
SL
SL
P
P
SL
12
9
SL
L
10
7
PL
9
Glowworm Fuelsaver 100FF
(remove link 7 - 12)
Halstead Best range
Basic Boilers (see Page 16)
Baxi Solo 2 30PF To 80PF
and 30RS to 60RS
Glowworm Economy Plus
(remove link SL-9)
Glowworm Spacesaver KFB50
(remove link 12-7)
Glowworm Ultimate SS
(remove link SL - 4)
• 2
L
4
L
L
• 1
N
7
Sunvic ET 1451
Link 2-3-6
N
TYPICAL
JUNCTION BOX
4
L
1
L
CM 41
CM 51
3
N
N
5
SWITCHMASTER 805, 900
1
4
L
L
L
L
L
12
L
L
L
L
L
L
1
L
L
L
L
L
L
L
L
L
L
L
9
10
L
N
N
N
N
N
N
N
N
N
N
N
N
2
PUMP
1
N
L
3
1
Switchmaster 400, 600
N
B
Randall 4033
Link 1-6
3
• 10
Landis & Gyr RWB20
Microgyr
• 9
E
A
4
3
3
E
Landis & Gyr RWB2
Glowworm Mastermind
2
N
N
• 7
E
1
4
L
• 6
1
3
Horstmann 425, 525, 527
Link L-2-5
V4043H
HOT WATER VALVE
L
GREEN/YELLOW
• 5
N
10
4
1
ORANGE
• 4
3
2
Drayton Tempus 7
BLUE
5
8
2
BROWN
Switchmaster
Symphony, Sonata
3
L
10
N
ORANGE
GREEN/YELLOW
4
1
3
2
ST 6400/ST 6300 ST 6200
BLUE
GREY
Pegler Sunvic
SP 50/100 (Link L-3)
5
L
V4043H
HEATING VALVE
1
BROWN
N
2
OR
3
2
3
GREY
4
2
6
T6360B
ROOM
THERMOSTAT
6
1
5
2
3
Honeywell ST 699B 1002
Link L-5-8
240V
MAINS INPUT (3 AMP)
3
4
4
1
6
Based on Honeywell Controls
E
E
E
E
E
E
E
E
E
E
E
E
3
INDIRECT SYSTEMS
For models up to 300 litres a mains supply of 240V, 3kW (13 amps) will be
required for the direct immersion heater. heat resistant cable, round 3 core
2.5mm2 (to BS) must be used. For High Capacity 500 litre models consult
the wiring diagram on the reverse of the inspection panel.
For indirect controls a 240V, 3 amp supply is required.
On Contract and High Capacity models it is necessary to fit the thermostat
using P.T.F.E tape (Please consult the label on the face of the unit for the
correct location in both cases).
The cables must be clamped in position (as previously stated) and the
control thermostat should be set at 60°C for the reasons above. In addition
to the thermostat there is a thermal cut-out should the thermostat fail. Refer
to FIG. 2.14.
WIRING SCHEME FOR 2 X 2 PORT MOTORISED VALVES
• 8
BASIC BOILER LIST
Baxi
Bermuda range
Boston RS and OF range
Glowworm
Complheat
Hideaway range
Ultimate
65 - 80
40 - 80
30B - 80B, 30CF - 60CF
Halstead
Buckingham range
Potterton
Kingfisher range
Statesman range (oil fired)
Caradon Ideal
Classic range
Mexico Ssper range
Mexico Slimline range
Newflame Boilers
Backboiler range
Condensing Boiler List
CARADON IDEAL
GLOWWORM
KESTON
POTTERTON
Minimiser FF30 - FF80
Energysaver (Remove link SL-9)
L
Envoy 30F - 80F
L E N
PL SL E N L
E N
PL SL E N L
refer to
manufacturers
instructions
VAILLANT
VU 186, 226
Boiler Connections
2 Motorised valves 2 way (see Fig. 2.14)
9 10 3 2 1
Pump Connections
2 Motorised valves 2 way (see FIG. 2.14)
9
3 2
WARNING : THE APPLIANCE MUST BE EARTHED.
The earth continuity conductor of the electrical installation must be
effectively connected to all exposed parts of other appliances and services
in the room in which the water heater is to be installed, conformity with the
I.E.E. wiring regulations.
NOTE: Do not switch on the immersion heater or fire the boiler until the
cylinder is full of water.
16
3.
COMMISSIONING
Check for obvious signs of damage to the cylinder and controls, and also
that the controls fitted correspond with the references quoted in these
instructions.
Ensure that the Drain Cock at the base of the appliance is closed before
commencing.
1) Ensure that the ProTech anti-corrosion system is connected to the
electrical supply;
2) Open all outlet taps;
3) Turn on mains water supply and allow the water heater to fill;
4) Ensure that the hot water system is flushed in accordance with BS 6700;
5) Close taps in turn after having purged the system of air;
6) Check for leaks around the controls and immersion heaters and again
after the unit has heated up;
7) Check that no water is passing to waste through the relief valves;
8) Ensure that the line strainer (situated in the pressure reducing valve) is
clear of installation debris and clean if necessary;
9) Test the operation of the temperature & pressure relief and expansion
valves by lifting/turning the manually operated test lever/cap and
observing that water flows through freely and safely to waste;
10) Check that the pressure in the expansion vessel is correct;
11) Check that the discharge pipe is plumbed so that it falls continuously
and that no taps, valves or other shut off devices are installed in the
pipe;
12) Check that all thermostats are set at 60°C;
13) DIRECT UNITS. Switch on immersion heater(s) and allow unit to heat
up. Check operation of Thermostat(s);
14) INDIRECT UNITS. Fill the indirect (primary) circuit following the boiler
instructions. Switch on the boiler, ensure that the programmer is in the
domestic hot water position. Allow unit to heat up and check operation of
indirect thermostat on motorised valve(s);
15) Check the temperature of the hot water at the nearest outlet and record
in the Benchmark log book;
16) Demonstrate operation to user, including operation of temperature &
pressure relief valve and what to do if it operates;
17) Give this manual along with the completed Benchmark log book to the
user to retain for future reference and make the customer aware that
periodic checks of the equipment are essential for safety.
17
4.
MAINTENANCE
To ensure efficient safe operation, it is recommended that the appliance is
serviced annually by a competent person.
After servicing, preliminary electrical system checks must be carried out to
ensure electrical safety (i.e. polarity, earth continuity, resistance to earth and
short circuit).
4.1
PROTECH
ANTI-CORROSION SYSTEM
WARNING: SWITCH OFF THE POWER SUPPLY BEFORE WORKING ON
THE APPLIANCE.
Trouble-shooting:
1) The green L.E.D. is NOT on:
- Check to see that the circuits electric plug is connected (if not,
connect);
- Check to see that the P.C.B, is supplied with electricity (if not, replace
the supply cable);
- Check to see that 230 V electricity is supplied (if not, ensure that 230 V
is supplied);
- If all these checks fail to locate the problem, replace the electronic
circuit (installer).
2) The red L.E.D. is on:
- Check to see that the tank is filled with water (if not, fill it before
carrying out the following checks);
- Check to see that the clip-on circuit connector is in the proper position
(if not, position correctly);
- Check to see that the electrodes connection lead is property connected
(to check this, gently pull on it) (if not, replace the electrode);
- Check to see that the connection lead to the tank is properly connected
to the tank (if not, connect properly); .
- Check to see that the two leads from the clip-on circuit connector are
not damaged, stripped, etc. (if so, replace the electrode);
- If all these checks fail to locate the problem, replace the electronic
circuit.
NOTE: To replace the P.C.B, there is no need to drain the cylinder;
1) Disconnect the two supply cables from the P.C.B. to the supply terminal;
2) Disconnect the clip-on circuit connector and polarising slot which
connects the circuit to the tank and the electrode;
3) Disconnect the P.C.B. from its supporting plate (plastic clips in the 4
corners) and;
4) Replace the defective circuit with a new one, then re-install in reverse
order to the above.
18
4.2
THERMAL CUT-OUT(S)
If the thermal cut-out has operated the cause must be found before resetting
(see section 5).
4.3
IMMERSION HEATER(S)
Descale the immersion heater(s) and remove any lime deposit from the
cylinder. Replace in reverse order. THIS DOES NOT APPLY TO COMFORT
MODELS.
4.4
UNVENTED CONTROLS
Check controls as per the following:
1) Line strainer - with the water supply turned off remove screen from
strainer and clean of any detritus;
2) Expansion vessel - with the water supply turned off and taps open, check
expansion vessel pressure and top up as necessary;
3) Temperature & pressure relief valve - with the water supply turned on,
check manually by lifting the test lever/turning the test knob (ensure valve
closes after testing);
4) Expansion relief valve - check manually by turning the test knob (ensure
valve closes after testing);
5) Discharge pipes (D1) - from both temperature & pressure relief and
expansion relief valve for obstructions;
6) Tundish & discharge pipe (D2)- open either valve gradually to produce a
full bore discharge into tundish and D2 without any back pressure;
7) Pressure reducing valve - check that the correct outlet pressure is being
maintained by recording the pressure at an in-line terminal fitting i.e. tap.
4.5
THERMOSTATS
Ensure that all thermostats adjusted for the correct temperature setting, this
should be between 60 and 65°C.
19
5.
FAULT FINDING
FAULT
POSSIBLE CAUSES
REMEDY
1) Mains cold water
supply shut off
Check and open Isolating
and/or stop valve. Check
water, Local Water Authority
2) Line strainer
blocked
Turn off mains water supply,
remove line strainer and
clean
3) Cold Water
Combination valve
fitted incorrectly
Check direction of flow
arrows on valve, refit in
correct position if necessary
1) Low mains water
pressure
Check pressure, consult
Local Water Authority if
necessary
2) Line strainer
partially blocked
Turn off mains water supply,
remove line strainer and
clean
3) Size of service
pipe too small
Increase to size stated on
page 6
1) Direct immersion
heater is not
switched on
Check immersion heater,
switch on if necessary
2) Direct thermal
cut-out has
operated
Test thermostat operation
and wiring, if faulty,
correct/replace. Reset cut-out
3) Boiler programmer
set to central
heating only
(Indirect models)
Check switch on domestic
hot water if necessary
4) Boiler is not
functioning
(Indirect models)
Check boiler operation, if
fault suspected consult
manufacturer's instructions
5) Indirect thermal
cut-out has
operated
Test thermostat operation
and wiring, if faulty,
correct/replace. Reset
cut-out
6) Motorised valve
jammed or not
wired correctly
(Indirect models)
Check wiring and operation of
motorised valve correct/
replace as necessary
DISCHARGE FROM
PRESSURE/
TEMPERATURE
RELIEF VALVE
1) Pressure above 7
bar, failure of
pressure reducing
valve. Temperature
above 90 C failure
of thermal control
Shut down boiler or immersion
heater. Check pressure
reducing valve and thermal
controls. Replace if
necessary
DISCHARGE FROM
EXPANSION
VALVE
1) Continually.
Pressure reducing
valve faulty
Check pressure from valve.
Replace if over 3.5 bar
2) When heater is heating.
Faulty expansion
vessel or lost charge
Check charge of vessel. Recharge vessel to 3.5 bar or
replace if necessary
NO HOT WATER
FLOW
REDUCED FLOW
RATE
WATER FROM
HOT TAPS
IS COLD
20
21
Kg
mins
bar
kW
m2
mins
bar
bar
bar
bar
bar/°C
bar
V
kW
mm
Wall Hung ST 50
12
3.5
3.5
6
7/90
3.5
240
3
480
(1)
(3)
60
1.15
27
Wall Hung ST 80
12
3.5
3.5
6
7/90
3.5
240
3
480
(1)
(3)
90
1.40
40
Wall Hung ST 100
12
3.5
3.5
6
7/90
3.5
240
3
480
(1)
(3)
120
1.26
41
12
3.5
3.5
6
7/90
3.5
240
3
350
(1)
(3)
120
1.50
29
Contract STD 100
Time taken to raise temperature
from 15˚C to 65˚C
15 mins
24 mins
15 mins
19 mins
44 mins
2 hrs 30 mins
1 hr 58 mins
2 hr 47 mins
Contract STD 125
Contract STD 150
Contract STD 210
12
3.5
3.5
6
7/90
3.5
240
3+3
350
(1)
(3)
240
2.10
45
Contract STD 300
12
3.5
3.5
6
7/90
3.5
240
3+3
350
(1)
(3)
350
2.85
85
12
3.5
3.5
6
7/90
3.5
240
3
350
(1)
(3)
150
3.5
20.5
0.75
18
2.00
41
Contract STI 125
(3)
12
3.5
3.5
6
7/90
3.5
240
3
350
(1)
(3)
240
3.5
26.7
0.90
26
2.40
56
Contract STI 300
12
3.5
3.5
6
7/90
3.5
240
3
350
(1)
(3)
350
3.5
26.7
0.90
40
2.85
95
Comfort STI 125
12
3.5
3.5
6
7/90
3.5
240
3
350
(1)
(3)
150
3.5
20.5
0.75
18
2.00
44
12
3.5
3.5
6
7/90
3.5
240
3
350
(1)
(3)
175
3.5
26.7
0.90
22
2.20
53
Comfort STI 150
BS 3456 Section 2.21
12
3.5
3.5
6
7/90
3.5
240
3
350
(1)
(3)
175
3.5
26.7
0.90
22
2.20
51
Single Phase/Three Phase
12
3.5
3.5
6
7/90
3.5
240
3+3
350
(1)
(3)
175
1.90
40
Contract STI 150
Time taken to raise 70% of the
stored volume to 65˚C
13 mins
21 mins
12 mins
16 mins
38 mins
1 hr 15 mins
1 hr 39 mins
1 hr 45 mins
(2)
12
3.5
3.5
6
7/90
3.5
240
3+3
350
(1)
(3)
150
1.70
33
Contract STI 210
*** Indirectly heated. Figures obtained by WRc-NSF Limited in accordance with Test Criteria 1-50-220 & 1-50-222.
**** With 4kW upgrade kit fitted. Figures obtained by WRc-NSF Limited in accorcdance with Test Criteria 1-50-220 & 1-50-222.
Contract STI 125***
Contract STI 210***
Comfort STI 125***
Comfort STI 210***
High Capacity 500 STI***
Contract STD 100
Contract STD 210
Contract STD 300****
Model
* To pressure reducing valve **Primary circuit 80°C, 1m3/h circulation. (1) Single Phase
Maximum Water Supply Pressure*
Operating Pressure
Expansion Vessel Charge Pressure
Expansion Relief Valve Setting
Pressure & Temperature Relief Valve Setting
Pressure Reducing Valve Set Pressure
Electrical Supply
Immersion Heater Rating
Immersion Heater Length
Immersion Heater Type
Immersion Heater Refernce Number
Direct Reheat Time (Single Immersion Heater) (∆T 50°C)
Maximum Primary Pressure
Indirect Coil Rating
Coil Surface Area
Indirect Reheat Time (∆T 50°C)**
Heat Loss (kWh in 24h) @ 60°C
Nett Weight
Comfort STI 210
12 12 12
3.5 3.5 3.5
3.5 3.5 3.5
6
6
6
7/90 7/90 7/90
3.5 3.5 3.5
240 240/415 240/415
6
6
3
350 400 400
(1) (2) (2)
(3) (3) (3)
240 290 290
3.5
3.5
26.7 - 31.8
0.90 - 1.50
54
26
2.40 3.60 3.60
58 130 149
High Capacity
500 STD UK
High Capacity
500 STI UK
6.
TECHNICAL INFORMATION
NOTES
22
NOTES
23
MTS Benelux sa/nv - Belgium
Commercial subsidiary: MTS (GB) LIMITED
MTS Building
Hughenden Avenue
High Wycombe
Bucks. HP13 5FT
Telephone: (01494) 755600
Fax: (01494) 459775
Internet: www.ariston.co.uk
E-mail: info@uk.mtsgroup.uk
Technical Service Hot Line:
(0870) 241 8180
Customer Service Help Desk: (0870) 600 9888
Ariston Unvented Cylinder (Protech) Manual 01/01/2004
Manufacturer: