Zip VP103 User manual

Contents
Zip Varipoint II Installation, Maintenance and User Instructions - June 2004 3
Specification 4
Special notices 5
Dimensions 6
Installation
Requirements 7-8
Positioning 9
Plumbing 9
Electrical 10
Commissioning 10-11
Operation
Precautions 11-12
Maintenance
Schedule 13
Fault Finding 13
De-Install 13
Spare Parts 14

Specification
Product: Varipoint II.
Type: Unvented multipoint.
Capacity: 10 ltr, 15 ltr.
Loading: 2.2 kW.
Heating Element: Embedded rod type.
Thermostat: Capillary type adjustable 5° to 75° C.
Water vessel: Heavy gauge copper, tested at 16 Bar.
Working pressure 6 Bar.
Casing: Impact resistant white plastic.
Insulation: High density, CFC free, polyurethane foam.
Safety features: Expansion relief valve (supplied).
Manually resettable over temperature safety cutout.
Facility for optional T&P valve.
Water heater protected against frost when electricity is
switched on.
Safety temperature control knob.
Approvals: CE endorsed - WRAS approved.
Models: VP103 - 10 ltr overbasin.
VP153 - 15 ltr overbasin.
VP103UB - 10 ltr underbasin
VP153UB - 15 ltr underbasin
4 Zip Varipoint II Installation, Maintenance and User Instructions - June 2004

Special notices
These instructions should guide you through the fitting of the Zip Varipoint II,
however if you encounter a problem, just call 0870 608 8888 and ask for
Service Helpdesk.
■The Zip Varipoint is an unvented water heater designed for connection
directly to the incoming mains water supply and can serve one or more
outlets using conventional taps.
■Care should be taken that the capacity of the unit chosen is sufficient to
meet the demands of the outlets being supplied.
■The casing is constructed from impact resistant plastic and heat losses
are minimised by the CFC free polyurethane foam insulation.
■The inner vessel is heavy gauge copper and pressure tested to 16 Bar
■An alloy sheathed heating element provides longer life in aggressive water
conditions.
■A manually resettable safety cut-out automatically cuts off the electrical
supply to the heating element in the event of a malfunction.
If the hot-water system is not used for two weeks or more,
it is recommended that a hot tap be turned on for several
minutes at a sink, basin or bath, but not at a dishwasher,
clothes washer or other appliance.
Zip Varipoint II Installation, Maintenance and User Instructions - June 2004 5

Dimensions
Choose from 4 models
Model Over or Capacity Dimensions (mm) Weight (kg)
Under Basin (litres) A B C Empty Full
VP103 Over 10 452 300 285 6.5 16.5
VP103UB Under 10 452 300 285 6.5 16.5
VP153 Over 15 452 300 285 7.5 22.5
VP153UB Under 15 452 300 285 7.5 22.5
6 Zip Varipoint II Installation, Maintenance and User Instructions - June 2004

Installation
Requirements
1 These instructions must be read and fully understood before commencing
the installation. If in doubt, or in need of further guidance please ring Zip
on 0870 608 8888.
2 Zip Varipoint unvented water heaters must be installed by a competent
installer, familiar with unvented electric water heaters.
3 Installations must comply fully with UK Water Regulations and any Local
Authority requirements.
4 The electrical installation including earthing and cross bonding
should comply with the current IEE regulations and any Local Authority
requirements.
5 The Zip Varipoint is designed for connection direct to the incoming mains
water supply and accommodation must be made for the expanded water
that will occur with each operating cycle. Regulations permit expanded
hot water to be accommodated within the supply pipework provided that
no check valve, stop valve with loose jumper or other fitting can prevent
reverse flow (diagram 1).
Where the expanded water cannot be accommodated in the pipe work
and the static water supply pressure is under 4 bars, fit accessory pack
AQ2 (Expansion vessel and check valve). Where static water pressures
are likely to exceed 4 bars, fit accessory packs AQ2 and AQ3 Pressure
reducing valve and line strainer. See diagrams 2 and 3.
6 The 6 bar expansion relief valve must be fitted on the cold water supply.
7 If required, a T&P valve (Zip Accessory AQ1) may be fitted to the boss
provided and must be installed in accordance to manufacturers
instructions.
8 The drain connection from the expansion relief valve and the T&P relief
valve (if fitted), must be in accordance with Water Supply Regulations.
The point of discharge must be in a safe and visible position. The
connection should be made using 15 mm pipe having a continuous
fall to a maximum length of three metres. It shall not have more than
3 right-angled bends. If a waste connection in excess of three metres
is necessary, the pipe diameter should be 22 mm with a continuous fall
and no more than four right-angled bends to a maximum resistance to
flow equivalent to 9 metres of straight pipe.
9 An Isolating valve must be fitted to the cold water supply.
10 Valves and fittings must be of a type required by Water Supply
Regulations.
Zip Varipoint II Installation, Maintenance and User Instructions - June 2004 7

Diagram 1
Inlet pressure less than 4 bar - expanded hot water can be accommodated in the pipework
Diagram 2
Inlet pressure less than 4 bar but expanded water cannot be accommodated in the pipework.
(Using pack AQ2 expansion vessel and check valve).
Minimum length of pipe - Length’A’
Size 15 mm pipe 22 mm pipe
10 litres 2.7 m (9 ft) 1.2 m (4 ft)
15 litres 4.2 m (14 ft) 1.8 m (6 ft)
Diagram 3
Inlet pressure is greater than 4 bar and expanded water cannot be accommodated in the pipework.
(Using pack AQ2 and AQ3 expansion vessel, check valve and pressure reducing valve).
8 Zip Varipoint II Installation, Maintenance and User Instructions - June 2004
Hot water
outlet
Expansion
relief valve
Nearest cold
water draw off
Cold water
supply
Service
valve
To drain
Hot water
outlet
Expansion
relief valve
Expansion
vessel
Cold water
supply
Service
valve
Check
valve
To drain
Hot water
outlet
Expansion
relief valve
Pressure
reducing
valve
Expansion
vessel
Cold water
supply
Service
valve
Check
valve
To drain
A

Positioning
1 Depending upon the model chosen the Varipoint 2 can be installed over
or underbasin. The underbasin model is designed to be floor standing
with the connections uppermost, the hot supply (colour coded red) to the
left when facing the unit.
2 The models to be sited overbasin are wall hung using the bracket
provided. Ensure that the wall supporting the product is sufficiently
strong to bear the weight of the unit when full. The connections are at
the bottom of the unit, again the hot supply is to the left facing the unit.
Mark the position of the fixing positions AND BEFORE drilling into the
wall ensure that any hidden pipework or electrical wiring is avoided.
3 The dimensions, fixing positions and weights are shown in the Table that
appears on page 6.
4When deciding the final location of the heater, consideration should
be given to the safe and visible disposal of any water resulting
from leaks or seepage. This is particularly relevant when the heater
is located in a roof space, cupboard or any concealed location.
For guidance please ring Zip Heaters on 0870 608 8888.
5 Position the Zip Varipoint to allow for future maintenance.
6 Do not install in a location where the unit or connecting pipe can freeze.
Plumbing
1 Check the incoming water supply pressure as this will determine the
layout and safety controls required. Remember that the mains water
pressure can increase considerably at night.
2 Refer to the diagrams 1 to 3 to determine accessories required and
layout.
3 Position the heater and controls to allow for future maintenance.
4 All control and safety valves are marked to show the direction of water
flow. It will not function if incorrectly orientated. Do not break any seals or
attempt to adjust any safety valve; to do so may impair the safety of the
installation and will invalidate the guarantee.
5 To ensure a watertight seal use fibre washers for connecting services
between the heater and the connectors used. Complete the seal by
applying PFTE tape to the threads but do not over-apply. Do not use
plumbers paste to secure joints as this can impair the operation of any
valves connected to the heater.
6 Flush all pipework before making the final connections to the valves,
accessories and the heater.
Zip Varipoint II Installation, Maintenance and User Instructions - June 2004 9

Electrical
1 Switch off the main electricity supply before carrying out any work
involving a live circuit or access to components that may be live.
2 The Zip Varipoint is pre-wired with a length of 3-core cable suitable for
connection to a mains 240v supply. Connection must be made to a
double-pole isolating switch on a dedicated circuit or a double pole
switched spur.
3 If the cable length is insufficient it is recommended that the entire length is
replaced and no joins made to the original. To replace the cable:
a. Prise the temperature control knob off the spindle.
b. Release the one screw revealed by the knob.
c. Remove the cover by sliding forwards.
d. Pass the new cable through the entry point of the cover.
e. Remake the connections.
f. Ensure the cable is securely clamped.
g. Refasten the cover.
Do not switch on the electrical supply until the water heater
is full of water
Commissioning
1 Check that all the requirements under “Installation Requirements” have
been met.
2 Check that all the water and electrical connections are correct and tight.
3 Open a hot water tap.
4 Open the isolating valve and permit the heater to fill.
5 When the water flows from the hot tap - turn off the hot tap.
6 Check for leaks, rectify as necessary.
7 Check the operation of the safety valve and when fitted the temperature
and pressure relief valve.
10 Zip Varipoint II Installation, Maintenance and User Instructions - June 2004
Neon Indicator
Thermostat
Cut Out
240V
Heating
Element

8 Set temperature as per “Operation” paragraph 1.
9 Switch on the power. The red neon light will glow during the heating cycle
and when the selected temperature is reached it will go out until the next
heating cycle.
10 Check the water temperature and re-check water connections and adjust
as necessary.
11 Pass these instructions to the person responsible for the building
management.
Operation
Precautions
1 The required stored hot water temperature may be selected by rotating
the control clockwise. There is a positive ‘location’ at each of the detailed
settings.
This setting protects the appliance against frost damage,
but this protection does not extend to connecting
pipework or fittings
Economy setting
Standard setting
Setting for very hot water when
large amounts of warm water
(mixed hot and cold) are required.
The water heater cannot be switched off via the temperature
selector. It can only be switched off at the switched mains
supply socket.
Temperature limitation
• Select position I and pull the
temerature selector from the
spindle.
•Press out the small manual
insert from the inside of the
selector and refit in the
required maximum position
(45, 60 or 75°C).
•Refit the temperature selector
onto the spindle.
(The temperature cannot be
set to a value higher than that
fixed on the selector).
Zip Varipoint II Installation, Maintenance and User Instructions - June 2004 11
45°C
60°C
75°C
45°C
60°C
75°C

2 The Zip Varipoint is an unvented electric water heater and a competent
installer, familiar with unvented systems, should carry out all servicing and
maintenance.
3 Do not remove the cover whilst the unit is connected to the electrical
supply.
4 The over temperature cut-out is located beneath the housing cover.
5 Do not reset the over temperature cut-out until the cause of its operation
has been diagnosed and necessary repairs undertaken.
6 Do not use the water heater if it is suspected of being frozen. Switch off
the electrical supply if water ceases to flow and do not switch on again
until a competent person has has checked it is safe to do so.
7 The heater should be visually inspected regularly. This is particularly
important if the heater is located in a cupboard, roof space or any other
concealed location. If there is any sign of leaks or seepage the heater
should be isolated from the water supply and switch off until a competent
person has investigated the cause.
8 Do not block or restrict the discharge from any safety valve fitted.
9 Do not tamper with any safety valve fitted.
10 If water discharges from any safety valve, switch off the electrical supply
to the unit, isolate the water supply and contact a competent installer
familiar with unvented systems.
11 Please note that lime scale deposits form more readily at higher
temperatures.
12 The heater is not guaranteed against damage or failures caused by the
formation of lime scale.
12 Zip Varipoint II Installation, Maintenance and User Instructions - June 2004

Maintenance
Schedule
It is recommended that all key components of the heater should be inspected
six monthly for continued safe and efficient operation. The components to be
inspected should include the following:
1 Expansion relief valve. Check correct operation.
2 Expansion vessel pressure should be checked – refer to label on vessel
for correct pressure.
3 Pressure and temperature relief valve. Check correct operation.
4 All valves should be replaced after 5 years.
Fault Finding
Fault Possible causes
Water not heating 1 Electricity supply fault.
2 Over temperature cut-out tripped.
3 Faulty thermostat.
4 Faulty element.
Discharge from 1 Thermostat fault.
any relief valve 2 Excessive mains water pressure.
3 Expansion vessel lost charge (if fitted).
4 Faulty expansion relief valve.
5 Faulty pressure reducing valve (if fitted).
To De-install the Heater
1 Switch off and disconnect the electrical supply.
2 Close the mains water supply isolating valve.
3 Disconnect the inlet and outlet water connections at the top of the unit.
4 Remove the heater.
5 Drain the unit through the hot water supply connection.
Zip Varipoint II Installation, Maintenance and User Instructions - June 2004 13

Spare Parts
14 Zip Varipoint II Installation, Maintenance and User Instructions - June 2004
5
5
2
3
1
4
2
3
1
4
Zip Varipoint II Overbasin
Item Part No. Description
1VP0301 Element 2.2kW
2VP0303 Thermostat
3VP0304 Resettable Cut-Out
4VP0317 Element Gasket
5VP0322 Wall Fixing Bracket
Zip Varipoint II Underbasin
Item Part No. Description
1VP0302 Element 2.2kW
2VP0303 Thermostat
3VP0304 Resettable Cut-Out
4VP0317 Element Gasket
5VP0322 Wall Fixing Bracket

Warranty – Varipoint II
Your Varipoint II is precision built from the finest
materials and should give many years of trouble free
service. Zip Heaters (UK) Ltd warrants that should the
cylinder fail within five (5) calendar years or any
component fail within two (2) of installation, that part
will be repaired or replaced by Zip Heaters (UK) Ltd free
of charge, except as set out below, provided that the
failure is not due to accident, misuse, abuse, condition
of the water, frost or failure to follow installation
instructions or service requirements. The only charges
payable by the customer are the cost or removal,
re-installation and cartage, should any component
need to be returned for repair. This warranty does not
cover damage resulting from non-operation or
consequential damage to any goods, furnishings or
property. Zip Heaters (UK) Ltd’s liability will be limited to
replacement or repair at the option of Zip Heaters (UK)
Ltd. This warranty does not replace any statutory
warranty in relation to the Varipoint II.