Installation, Operation & Maintenance
Instructions
Please leave this instruction booklet with the owner as it contains important guarantee, maintenance and safety information
Read this manual carefully before commencing installation.
This manual covers the following products:
QT 50 S |
QT 80 S |
QT 120 S |
Pt. No. 49007 |
Pt. No. 49008 |
Pt. No. 49009 |
QT 50 T |
QT 80 T |
QT 120 T |
Pt. No. 49004 |
Pt. No. 49005 |
Pt. No. 49006 |
FOR POSITIVE HEAD APPLICATIONS ONLY
*2 year as standard extended to 3 years with a Techflange fitted
PRODUCT DESCRIPTION
Electric motor driven single or twin ended centrifugal pump, complete with an automatic control system, consisting of flow switches and electronic controls.
APPLICATION
Techflow pumps are suitable for positive head installation conditions. The pumps are designed for pressure boosting applications in vented stored hot or cold, clean fresh water systems, where under gravity, some flow (1.0 l/min minimum) is available. Inlet pressures to the pump and ambient temperatures must not exceed the values given in the technical specifications.
This pump set must not be used for any other application without the written consent of Techflow Products and in particular, MUST NOT be connected directly to the mains water supply.
This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.
Children should be supervised to ensure that they do not play with the appliance.
Please read installation details carefully as they are intended to ensure this product provides long, trouble free service. Failure to install the unit in accordance with the installation instructions will lead to invalidation of the warranty.
STORAGE
If this product is not to be installed immediately on receipt, ensure that it is stored in a dry, frost and vibration free location in its original packaging.
CONTENTS
Page Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Important Facts - read before commencing installation . . . . . . . . . . . . . . . . . . . . 4 Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Pump Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Electrical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Technical Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Trouble Shooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Guarantee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Cont ...
- 2 -
CHECKLIST
22 mm outlet pipework
22 mm inlet pipework
22 mm isolation valve (non restrictive) (not supplied).
To allow easy service of pump
22 mm inlet pipework
B
B
C
A
Fig. 1
(Twin pump shown)
Item |
Description |
Qty |
Item |
Description |
Qty |
|
|
|
|
|
|
A |
Pump |
1 |
C |
Outlet hose only |
2 |
|
|
|
|
|
|
B |
Inlet hose with isolating valve |
2 |
|
|
|
|
|
|
|
|
|
Your product may vary slightly from the picture above.
Cont ...
- 3 -
1 READ BEFORE COMMENCING PUMP INSTALLATION
A.Water storage capacity.
1.11The hot and cold water storage capacity must be sufficient to meet the flow rates required by the pumped equipment and any other water using fittings and appliances, which may be operated simultaneously.
1.12Ensure the pump is primed as described in the priming section before starting, damage to the shaft seal will result otherwise. See Section 5 - Commissioning.
B.Water temperature
The water entering the pump must be controlled as follows:
1.13The maximum allowable water temperature is 65 oC.
1.14The minimum allowable water temperature is 4 oC.
1.15DO NOT fit a pump if the hot water is heated via a method where the water temperature cannot be controlled, such as solar or solid fuel you must consult our helpline.
C.Minimum Flow
1.16For this pump to operate correctly there must be a minimum gravity flow of at least 1 l/min through all outlets to be pumped.
D.Pipework - General
1.17Secure pipework: Ensure pipework to and from pump is independently supported & clipped to prevent forces being transferred to inlet and outlet branches of pump.
1.18Flux: Solder joints must be completed and flux residues removed prior to pump installation (flux damage will void any warranty).
1.19Pipework design: Care should be taken in the design of pipework runs to minimize the risk of air locks e.g. use drawn bends rather than 90o bends.
1.20DO NOT introduce solder flux to flexible hoses, pumps or pump parts manufactured from plastic.
1.21DO NOT allow contact with oil or cellulose based paints, paint thinners or strippers, acid based descalents or aggressive cleaning agents.
1.22DO NOT install a non-return valve, or devices which contain non-return valves, in the suction (inlet) pipework to the pump. The pump must be free to vent to the supply tank at all times.
1.23DO NOT bend the flexible hoses beyond 30o. They must be installed as straight as possible..
1.24DO NOT connect this pump to the mains supply or fit in an unvented system.
E.Plumbing & Electrical Installation Regulations
1.25The plumbing installation must comply with “The Water Supply (Water Fittings) Regulations 1999” and “BS 6700” building regulations.
1.26The plumbing installation must be installed by a qualified person.
1.27The electrical installation must be carried out in accordance with the current
national electrical regulations.
1.28 The electrical installation must be installed by a qualified person.
Cont ...
- 4 -
2LOCATION - GENERAL
2.11Access: For emergencies and maintenance the pump must be easily accessible.
2.12Protection: The pump must be located in a dry position, frost free and protected from freezing, particularly when installed in a loft (not recommended).
2.13Ventilation: Ensure an adequate air flow to cool the pump. Separate the pump from other appliances that generate heat. An 80 mm (3 “) air gap must be maintained around the pump.
2.14Safety: The motor casing can become very hot under normal operating conditions. Care must be taken to ensure it cannot be touched during operation.
2.15Water retention: If possible site the pump in a location where in the unlikely event of a water leak, any spillage is contained or routed to avoid electrics or areas sensitive to water damage.
2.16Static inlet pressure: Before deciding where to locate the unit check to ensure the static inlet head between pump and cold water level (Figs. 2 & 3) is at least
0.5metre and does not exceed the max inlet head of 8 metres.
2.17Pump position: The pump must be positioned on its anti-vibration mounting feet and as close to the water source as possible. Ensure the pump is mounted in a position that allows easy access to the box if required.
2.18Ambient temperature: The pump must be sited in a location where the maximum ambient temperature does not exceed 40 oC.
2.19Pipework: For optimum performance pipework MUST be 22 mm. Pipework should only reduce to 15 mm when entering terminal fitting.
2.20Static outlet pressure: The static outlet head (Figs. 2 & 3) must also be within the maximum requirement of 8 metres.
2.21Noise: The anti-vibration mounting feet and flexible hoses which are supplied as standard, and a precaution to reduce noise transmission, however care must be taken when mounting the pump that any noise is not amplified through loose panels or pipework. Do not screw down the pump.
2.22Flexible hoses: Use only Techflow supplied hoses.
2.23Isolating valves: Separate isolating valves (non restrictive) must be fitted to allow easy pump service.
2.24Pump location: The pump location must be at floor level next to the hot water cylinder or a level that is below the secondary tapping that feeds the pump. This will ensure the pump has access to an air free water supply which is important for trouble free operation, and never more than 4 metres from the hot water cylinder.
Cont ...
- 5 -
2 LOCATION - SINGLE PUMP
Max. 8 m
Min. 0.5 m
Static Inlet Pressure
Positive Duty Single Pump System
Fig. 2
Outlet head must be below bottom of cold water tank and able to pass a minimum of 1 l/min of gravity flow
Max. 8 m
Static Outlet Pressure
2.25The cold water supply: The supply must be air free and have a dedicated connection to the tank which should be via a tank connector, positioned at a slightly lower level (25 mm minimum) than the feed pipe to the hot water cylinder.
Do not connect to the mains.
2.26Location: The pump must, for optimum performance, be sited as close as possible to and never more than 4 metres from the HOT WATER cylinder. The pump should always be sited BELOW the HOT WATER take-off from the cylinder.
Cont ...
- 6 -
Loading...