Forte - Heating Warmup - Free user manual and instructions

Product Type	Hydronic Underfloor Heating Pipe System
Brand	Warmup
Model	Forte
Category	Heating
Pipe Material	PE-RT (Polyethylene of Raised Temperature Resistance)
Pipe Dimensions	16 mm outer diameter, 2 mm wall thickness
Available Lengths	25 m, 50 m, 60 m, 70 m, 80 m, 90 m, 100 m, 110 m, 120 m, 300 m
Minimum Bending Radius	5 times pipe diameter (80 mm)
Maximum Operating Pressure	8 Bar
Maximum Operating Temperature	60 °C
Floor Sensor Type	NTC 10kΩ thermistor
Compatible Thermostats	Warmup thermostats (e.g., 6iE OB WiFi)
Warranty	Lifetime (when registered within 30 days of purchase)
Safety Features	Pressure test before screeding; do not operate until screed fully cured
Installation Requirements	Subfloor SR2 standard; damp proof membrane; insulation; vapour control layer; reinforcement mesh
Pipe Securing	Cable ties at 500 mm intervals
Pipe Patterns	Spiral, double meander, single meander
Floor Covering Compatibility	Stone, tiles, timber (max thermal resistance 0.15 m²K/W)
Screed Thickness (Minimum)	40 mm (calcium sulfate) to 75 mm (cement sand)
Expansion Joint Protection	Pipe crossing joints protected with 300 mm conduit
Spare Parts Available	Pipe, cable ties, bend supports, perimeter strip, decoiler, insulation
Repair Method	Kinked pipe can be straightened with heat gun; SafetyNet replacement if damaged before covering
Compliance	Building regulations; ISO 11855-5 for expansion joints

Frequently Asked Questions - Forte Warmup

What is the minimum bending radius for the Warmup Forte pipe?

The minimum bending radius is 5 times the pipe diameter, which is 80 mm. Do not force the pipe into tighter bends to avoid kinking.

How should I prepare the subfloor before installing the Forte system?

The subfloor must be clean, level, smooth, dry, frost-free, solid, weight-bearing, and dimensionally stable to SR2 standard (max 5 mm deviation over 2 m). Apply a damp proof membrane if needed.

What is the recommended pipe layout pattern for even heat distribution?

A spiral pattern is recommended for even surface temperature and high heat output. Start from the perimeter and work inward at double spacing, then back out at intended spacing.

How do I test the floor sensor before screeding?

Use a digital multi-meter to measure resistance. The sensor is an NTC 10kΩ type. At 20°C, resistance should be around 12.5 kΩ. Refer to the resistance-temperature table in the manual.

What should I do if the pipe gets kinked during installation?

Gently straighten the pipe and heat the kinked area with a hot air gun until the kink disappears. If the pipe is damaged and cannot be repaired, contact Warmup for replacement under SafetyNet guarantee.

What are the warranty conditions for Warmup Forte pipe?

The pipe has a lifetime warranty if registered online within 30 days of purchase. It must not exceed 8 Bar pressure or 60°C temperature, and must be installed according to instructions. SafetyNet covers accidental damage before covering.

Can I install the Forte system under any floor covering?

It is compatible with most floor coverings, but works best with conductive finishes like stone and tiles. The thermal resistance of the floor covering should not exceed 0.15 m²K/W. Check with the flooring manufacturer for underfloor heating suitability.

How long must I wait before turning on the heating after screeding?

Wait until the screed has fully cured, typically 21 days for sand/cement screed. Then bring the floor to 20-25°C for 3 days, then to maximum design temperature for at least 4 more days before installing floor covering.

What is the purpose of the perimeter strip?

The perimeter strip allows for differential movement between the finished floor and walls due to expansion. It should be installed around the room perimeter and taped to the wall.

How do I calculate the heat output of the Forte system?

Use the formula q = k_H × (T_water - T_air), where k_H is the system performance factor from the chart (e.g., 3.08 W/m²K for 200 mm centres with 1.25 tog floor). The manual provides examples.

USER MANUAL Forte Warmup

Warmup Forte

Installation manual

Warmup®

The world's best-selling floor heating brand™

Over 2.7 million installations in more than 72 countries

Experience MyHeating™

SmartGeo™

Unique SmartGeo™ automatically turns down the heating when you're out.

Easy to use

Simple and secure setup using WiFi, with 24/7 technical support.

AutoSwitch™

Always on the best tariff, automatically. Reduce energy bills by over £400

Download now for iOS and Android

6iE OB WiFi Thermostat

Installation summary 4

Safety information 6

Components available from Warmup 7

Typical floor build-up 8

Recommended subfloor - All Floor Finishes 8

Step 1 - Subfloor considerations ...... 9

Step 2 - Subfloor preparation ....10

Step 3 - Lay the pipe....12

Step 4 - Lay the screed layer 16

Step 5 - Floor covering....19

Testing information 20

Troubleshooting 21

System performance 22

Warranty 26

Your Warmup ^® underfloor heating system has been designed so that installation is quick and straight forward, but it is important that the instructions in this manual are followed to ensure that your underfloor heating system performs correctly. Please ensure that you have the components and working drawings necessary for this system before you begin installation.

Warmup plc accepts no liability, expressed or implied, for any loss or consequential damage suffered as a result of installations which in any way contravene the instructions that follow.

It is important that before, during and after installation that all requirements are met and understood. If the instructions are followed, you should have no problems. If you require help at any stage, please contact our helpline.

You may also find a copy of this manual, wiring instructions and other helpful information on our website

www.warmup.co.uk

Please also read the full instructions that follow this section.

Interior view of a room with two white measurement rods and a concrete floor, labeled 'SR2 2 m < 5 mm' (no other text or symbols)

- The subfloor must be clean, level, smooth, dry, frost-free, solid, suitably weight-bearing and dimensionally stable.

Interior view of a room with blue walls and dark flooring, no visible text or symbols

- Lay a damp proof membrane over the subfloor to prevent water ingress. - Install perimeter strip around the perimeter of the room to allow for differential movement between finished floor level and walls.

Interior view of a room with blue and gray flooring, no visible text or symbols

- Lay insulation board over the membrane. Insulation should be chosen and installed in line with building regulations.

Interior view of a solar panel installation with grid pattern and mounting holes (no text or symbols visible)

- Following the structural engineers design, install the reinforcement mesh taking care not damage the damp proof membrane.

- Lay a vapour control layer over the insulation to prevent water ingress.

Interior view of a solar panel array with white insulation and black connectors (no text or symbols visible)

- Install the pipe in line with the projects working drawings. It is recommended the pipe is installed using a spiral pattern to achieve an even surface temperature and a high heat output. - Install the pipe at the necessary spacing for the heat output required. Secure the pipe to the reinforcement mesh with cable ties at approximately 500 mm intervals.

Close-up of a metal grid structure with curved white rods and mesh patterns (no text or symbols visible)

• Install the floor sensor as shown, centrally between the two closest parallel runs of pipe.

Mechanical assembly with pressure gauge and cylindrical components, no visible text or symbols

• Measure and cut the pipe so that it reaches both the flow and return ports on the manifold.

• Refer to the manifold manual for detailed information on mounting, pressure testing and commissioning.

Industrial machine with black and white pipes, no visible text or symbols

- Use Warmup pipe bend supports to hold the flow and return pipe at a 90° angle as it exits the floor towards the manifold.

3D floor grid with a black tool partially embedded in the material, no visible text or symbols

- Lay your chosen screed directly over the heating system in accordance with manufacturer instructions, building regulations and standards taking care not to damage the pipe.

Interior corner of a room with a tiled floor and grid pattern (no text or symbols)

- Lay your chosen floor covering once the screed layer has cured and dried, in accordance with floor manufacturers instructions.

• Install your Warmup thermostat referring to their installation instructions. The system must be connected to and controlled with a thermostat and sensor.

Perform a site inspection. You will need to confirm that all measurements and other requirements on site match your working drawings. Ensure that all areas are correctly prepared, dry and protected from weather.
i Inspect the site for possible hazards that could damage the Warmup pipe, such as nails, staples, materials or tools.
Use a pipe cutter designed for plastic pipe ensuring that there are no burrs on the pipe ends. It is important to achieve a clean cut.
The installation of the system must comply current edition of building regulations.
Do not pull pipe from the coil while it is sitting flat. It must be unwound from the coil, rotating the coil as the pipe is pulled from the inside.
Do not force the pipe into bends. It is easier to lay the pipe with a large radius and then gently pull the pipe to the required bend. The minimum bending radius is 5 times the diameter of the pipe.
Do not kink the pipe. Excessive bending of the pipe can cause it to kink, where this occurs flow may be obstructed or reduced. Kinked pipe must be repaired or replaced. To repair a kink, straighten the pipe and simply heat the area with a hot air gun until the kink disappears.
i Ensure the subfloor is prepared to an SR2 standard. The subfloor must be clean, level, smooth, dry, frost-free, solid, suitably weight-bearing and dimensionally stable.
i Screed layers used over the Warmup Forte should be chosen and installed in line with building regulations and standards.
i Install the floor sensor centrally between the two closest parallel runs of pipe and away from other heat sources such as hot water pipes, lighting fixtures, chimneys etc.
Before installing the floor finish, its suitability for use with underfloor heating and its maximum operating temperature should be checked against required operating conditions. Ensure the heat output of the floor meets your requirements.
i Ensure adhesives, grouts, glues and screeds used are compatible with underfloor heating.
i Underfloor heating performs the most efficiently with conductive, low resistance floor finishes such as stone and tiles. Consideration should be given to the thermal resistance and temperature limits of the chosen floor covering and its impact on the system heat output
It is recommended that all furniture installed over underfloor heating has feet, maintaining a minimum 50 mm ventilated space above the floor to allow heat flow into the room.
DO NOT switch on the heating system until the screed layer has fully cured.
DO NOT use steel rebar tie wire to secure the pipe to the subfloor. Only use cable ties supplied with the product or an equivalent specification.

Product Code Description

WHS-FO-TIE(Pack of 100)	Cable ties
WHS-P-PERT-xxxx = length: 25, 50, 60, 70, 80, 90, 100, 110, 120, 300m	PE-RT Pipe- 16mm x 2mm
WHS-P-BEND Pipe bend supports
WHS-CL-CONDUIT25mm x 50m	Pipe conduit
WHS-X-EDGE50 Warmup perimeter strip
WHS-P-DECOILER Pipe decoiler
WHS-X-POL1200WHS-X-POL500	Polythene DPM; 1200/500 gauge
WHS-MT-B0xxyyWHS-MT-B0xxyy+xx = kpa: 70 / 100yy = thicknesses: 25, 50, 70, 100mm+ = 0.030W/mK	EPS Insulation
WHS-MT-INSxxx = thicknesses:25, 30, 40, 50, 60, 70, 75, 80, 90, 100mm	PIR Insulation
Additional components that may be required as part of yourWarmup heating installation:
Manifold, mixing unit, actuators, valves and euroconus connectors
Wiring centre
Warmup thermostats
Electrical trunking/conduit
Digital multi-meter required for testing the resistance of the sensor
Screed
Reinforcement mesh

Recommended subfloor - All floor finishes

1 Floor covering

2 Perimeter strip To allow for differential movement between finished floor level and walls

3 Screed layer

4 Warmup PE-RT Pipe

5 Floor sensor Secure the sensor to the reinforcement mesh with cable ties as shown.

6 Cable ties

7 Reinforcement mesh

8 Reinforcement mesh supports

9 Vapour control layer (VCL) To prevent water ingress

10 Insulation layer

11 Damp proof membrane (DPM) To prevent water ingress

12 Concrete subfloor

The concrete subfloor must be clean, level, solid, structurally sound and dimensionally stable. Ensure the subfloor is prepared to an SR2 standard (SR2 - the maximum permissible departure over a 2 m straight is 5 mm).

If necessary an appropriate blinding layer should be applied.

Any materials on or within the subfloor must be suitable for supporting underfloor heating systems. If using temperature sensitive materials beneath the heating cable, such as damp proofing or tanking systems, contact the manufacturer for advice.

Where tiles are to be used, ensure that the subfloor meets the local tiling standard requirements.

Do not commence installation without ensuring that the resulting floor construction will meet the requirements of the floors intended use and its finish.

Interior corner with a white metal ruler and measurement tape, placed on a concrete floor (no text or symbols visible)

• The subfloor must be clean, solid, structurally sound and dimensionally stable. Ensure the subfloor is prepared to an SR2 standard (SR2 - the maximum permissible departure over a 2 m straight edge is 5 mm).
  • If necessary a blinding layer should be applied.

Interior view of a room with tiled floor and horizontal white lines, no visible text or symbols

- Lay a damp proof membrane over the subfloor to prevent water ingress.

Interior view of a room with blue walls and dark flooring, no visible text or symbols

• Install perimeter strip around the perimeter of the room to allow for differential movement between finished floor level and walls.
- Tape the perimeter strip to the wall to hold in position.

Interior corner of a room with blue lighting and tiled floor (no text or symbols visible)

• Lay insulation board over the membrane referring to manufacturer instructions and in line with building regulations
• Ensure the insulation board is pressed against the perimeter strip.

i Ensure the perimeter strip is installed with the integrated polyethylene skirt facing out from the wall.

Interior view of a room with blue and gray flooring, no visible text or symbols

- Lay a vapour control layer over the insulation to prevent moisture ingress.

Interior corner of a room with blue and gray flooring, no visible text or symbols

- Fold the polyethylene skirt over the vapour control layer and tape into position.

Close-up of a metal stamping tool applying black marble on a tiled floor (no text or symbols visible)

- Before installing the reinforcement mesh and pipework, sweep the floor to clear any debris.

Interior view of a solar panel installation with grid lines and mounting fixtures (no text or symbols visible)

- Following the structural engineers design, install the reinforcement mesh taking care not damage the damp proof membrane.

- The steel reinforcement mesh should be held at mid depth using supports when the screed is applied.

If the project has been supplied with a set of working drawings, follow the provided pipe layout. Ensure each circuits details are recorded in the commissioning log provided in the Warmup manifolds installation manual.

- Plan the circuit layout ensuring that the flow and return pipes can connect from the manifold to their respective heated area without crossing each other.

Industrial piping system with pressure gauge and three white cylindrical tanks (no visible text or labels)

- Ensure there is excess flow and return pipe at the manifold location which can be cut later after the pipe has been laid.

Industrial piping system with black and white cables, no visible text or symbols

- Attach pipe bend supports to hold the pipe at a 90^ angle as it enters the floor. Position the support so that the pipe rises straight to the manifold.

i Feed pipes normally go through doorways but to minimise congestion, pipes can be fed through walls. Ensure holes drilled in the wall are below floor level and the pipe is protected with conduit.

Beginning from the manifold location, following the projects working drawings, begin laying the pipe, maintaining a gap of half the design pipe spacing around the perimeter of the room.

Interior view of a solar panel installation with concentric white insulation strips and black components (no text or symbols visible)

• It is recommended to use the spiral pattern to achieve an even surface temperature and high heat output.
• The first loop should be laid around the perimeter of the room, then working inwards towards the centre at double the intended pipe spacings, securing to the reinforcement mesh with cable ties at 500mm intervals
• Once you reach the centre, work back out, completing the spiral at the intended pipe spacing.
• For the pipe bends, secure the pipe to the reinforcement mesh using cable ties at the beginning and end of each bend.

Repeating white metal grid pattern on a textured floor, no text or symbols visible

• Where it is not practical to use the spiral pattern, a double meander pattern can be used, providing a more even surface temperature and higher heat output than a single meander pattern.
• The pipe should be laid referring to the working drawings, alternating the first run between 3 times and 1 times the design pipe spacing, before working back to the manifold location, securing to the reinforcement mesh with cable ties at approximately 500 mm intervals
• For the pipe bends, secure the pipe to the reinforcement mesh using cable ties at the beginning, middle and end of each bend.

Interior view of a solar panel installation with grid lines and mounting fixtures (no text or symbols visible)

- If using the single meander method, ensure the pipe installed against the external walls is supplied with the hottest (supply) water. Meander up and down the floor area at your designed pipe spacing, securing to the reinforcement mesh with cable ties at 500mm intervals and then feeding the pipe back towards the manifold.

- For the pipe bends, secure the pipe to the reinforcement mesh using cable ties at the beginning, middle and end of each bend.

Industrial piping system mounted on a metal shelf with black cables and red pressure gauges, set against a tiled floor (no visible text or symbols)

• Install pipe conduit or lagging over the service pipes as this will insulate the pipes and alleviate any hotspots.

Industrial piping system with pressure gauge and multiple white cylinders, alongside a blue-handled tool (no text or symbols visible)

• Measure and cut the pipe so that it reaches both the flow and return ports on the manifold.
• Refer to the manifold manual for detailed information on mounting, pressure testing and commissioning.

Close-up of white metal pipes installed on a reflective surface, no text or symbols visible

• Install the sensor, at least 300 mm into the heated area it will be controlling. It should be located centrally between the closest parallel runs of pipe and not in an area influenced by other heat sources.
• The sensor can be secured to the reinforcement mesh with cable ties as shown

DO NOT tape over the sensor tip it must be in full contact with the screed layer.

Before installing any screed, floor finish, adhesives or glues over the system, the installation requirements of each must be checked to ensure compatibility with underfloor heating.

Underfloor heating performs the most efficiently with conductive, low resistance floor finishes such as stone and tiles.

Table 1 - Screed types and minimum thicknesses

Screed Type	Minimum thickness (mm)	Standard
Traditional cementitious sand/cement	75 (65) BS 8204-1
Traditional calcium sulfate	40 CIRIA Report 184
Pumpable self-smoothing calcium sulfate	40 (35) BS 8204-7
Pumpable self-smoothing cementitious	40 (35) BS 8204-7

Table 1 shows different screed materials used and minimum thicknesses required with underfloor heating systems. Domestic measurements are in brackets. This table is for guidance only, screed layers used over Warmup Forte must be chosen and installed in line with the latest edition of building regulations and standards.

Close-up of a tiled roof corner with a metal bracket and concrete wall, showing structural details (no text or symbols)

• Heated screeds will expand and contract slightly during use therefore expansion joints may also be required. As per: ISO 11855-5, an expansion joint plan (including type and place of joint) shall be drawn up by the building planner.
• A joint shall be applied above a building joint. The floor screed shall be separate from rising elements (border joints, e.g. walls doorways etc.).
• The determination of joint width, joint distance and joint areas depends on type of binder, floor covering geometry of the area, use of area and temperature change.

3D rendering of a mechanical assembly with rods and a central shaft, no visible text or symbols

- Any pipe crossing an expansion joint should be protected with a 300mm conduit, 150mm either side of the joint.

Red electrical switch and cable installation on tiled floor (no visible text or symbols)

- Before the screed is laid the pipe should be pressure tested and then held at 3 bar whilst screeding. This will enable any leaks to be detected immediately. Please refer to the manifold manual for guidance.

Interior view of a tiled room with white pipes and a black tool, no visible text or symbols

- Apply the screed layer referring to the screed manufacturers instructions for mixing, drying and curing information.

Curing times for sand/cement screeds are typically 21 days. DO NOT switch on the heater until the screed has fully cured.

The heating should not be turned on until the screed has fully cured. Once cured the heater can be switched on and the floor brought up to 20-25°C. This shall be maintained for at least 3 days after which the maximum design temperature shall be set and maintained for at least a further 4 days.

Interior corner of a room with a yellow object and directional arrows, accompanied by icons for stopwatch, book, and thermometer (no text or symbols on main objects)

- Once the screed has cured a heat cycle will need to be conducted before your floor covering is laid. Please see the manifold manual for instructions on the initial heat cycle.

- DO NOT install the floor covering until the floor has cooled down.

- The perimeter strip should finish just proud of the screed layer but can be trimmed back flush with a utility knife if required.

Before installing any floor finish, adhesive or underlay over the screed layer, the installation requirements of each must be checked to ensure compatibility with underfloor heating.

Underfloor heating performs the most efficiently with conductive, low resistance floor finishes such as stone and tiles. The maximum thermal resistance of the floor should not exceed 0.15 [m²K/W].

Interior corner of a room with a tiled floor and wall, no text or symbols visible

• Lay the floor covering adhering to the flooring manufacturers instructions.
• Ensure any floor coverings, underlays and adhesives used are suitable for use with underfloor heating at the intended operational temperatures and conditions.

Sensor resistance test

Close-up of a tool interacting with a white cable, showing black and red components (no text or symbols visible)

- Ensure that the sensor is tested before the screed layer has been laid. Warmup thermostats typically use a 10 kΩ sensor. Please to refer to the thermostat manual for further details.

The expected resistance depending on temperature is listed below.

Sensor resistance by temperature - NTC10K
Temperature Resistance Temperature Resistance

0 °C 32.5 kΩ 16 °C 15.0 kΩ

2 °C 29.4 kΩ 18 °C 13.7 kΩ

4 °C 26.6 kΩ 20 °C 12.5 kΩ

6 °C 24.1 kΩ 22 °C 11.4 kΩ

8 °C 21.9 kΩ 24 °C 10.5 kΩ

10 °C 19.9 kΩ 26 °C 9.6 kΩ

12 °C 18.1 kΩ 28 °C 8.8 kΩ

14 °C 16.5 kΩ 30 °C 8.1 kΩ

ISSUE 1 - Running out of pipe/excess pipe leftover

PROBLEM SOLUTION

When laying the pipe, incorrect pipe spacing has been used.

The pipe will have to be installed again at the correct spacing as per your design layout

ISSUE 2 - Floor overheating at flow and returns to manifold

PROBLEM SOLUTION

As the pipes reach the manifold they are tightly packed together which will give a higher heat output.

The pipes will need to be insulated using 15mm conduit or pipe lagging.

ISSUE 3 - Excessive/insufficient heat output

PROBLEM SOLUTION

Incorrect water temperature

Refer to System Performance chart to calculate the required water temperature

k^H Value - W/ m^2K

Resistance of Floor Covering, tog

0.00

0.25

0.50

0.75

1.00

1.25

1.50

1.75

2.00

2.25

2.50

2.75

3.00

Pipe Centres	Warmup Forte - 100mm Concrete with A142 Steel Reinforcement Mesh Mid Depth, Thermal Conductivity λ = 1.80W/m·K
100mm	7.83	6.43	5.46	4	74	4	19	3.76	3.41	3.12	2	87	2	66	2	48	2.32	2	1
150mm	6	70	5.59	4	80	4	21	3.76	3.40	3.10	2.85	2	64	2	46	2.30	2	16	2
200mm	5.76	4	87	4	24	3.76	3.38	3.08	2	82	2	61	2.43	2	27	2	14	2	02	1
250mm	4	96	4	26	3.75	3.35	3.04	2	79	2.58	2	40	2	24	2	11	1	99	1	88
300mm	4	28	3.72	3.32	3.00	2	74	2.53	2.35	2	20	2	07	1.95	1.85	1	76	1	6

q = Specific Heat Output, W/m2k	H = System Performance Factor, W/m2K
Twater = Mean water Temperature T	air = Room Air Temperature

Using the system k_H value to calculate the system heat output:

$$ \mathbf {q} = \mathrm{k} _ {\mathrm{H}} \times \left(\mathrm{T} _ {\text { water }} - \mathrm{T} _ {\text { air }}\right) $$

Example:

The heat output through an 18 mm thick, ≈ 1.25 tog timber floor, over Warmup Forte, fitted with pipe at 200 mm centres, in a 21°C room heated with 40°C water is;

$$ q = 3. 0 8 \times (4 0 - 2 1) = 3. 0 8 \times 1 9 = 5 8. 5 2 \mathrm{W} / \mathrm{m} ^ {2} $$

Alternatively, using the system k_H value to calculate the required water temperature, knowing the required heat output:

$$ \mathrm{T} _ {\text { water }} = (\mathrm{q} / \mathrm{k} _ {\mathrm{H}}) + \mathrm{T} _ {\text { air }} $$

Example:

The water temperature required to produce a heat output of 55 W/m ^2 , through a 3 mm thick ≈ 0.25 tog LVT floor finish, over Warmup Forte, fitted with pipe at 200 mm centres, in a 22°C room is;

$$ \mathrm{T} _ {\text { water }} = (5 5 / 4. 8 7) + 2 2 = 1 3 + 2 2 = 3 3 ^ {\circ} \mathrm{C} $$

Industrial piping system with stainless steel fittings and pressure gauges (no visible text or symbols)

S3 Manifold

FROM

Warmup

Floor sensor setting for target heat output

The room with the highest water temperature requirement sets the design water temperature for the whole system based on the calculations from the previous section.

Using the graph above it is possible to limit the specific heat output to the required value.

The example above shows a design room air temperature of 20^ C and design heat output of 52.5 W/m^2 . Based on a 0.150 m^2 K/W (1.5 tog) floor finish the floor sensor should be set to 33^ C ( 20^ C room air + 13^ C T ) to resulting in floor surface temperature of 25^ C ( 20^ C room air + 5^ C T ).

Specific Heat Output, W/m²

The design floor surface temperature difference should not be more than 9 °C in occupied areas, 15 °C in unoccupied areas.

Heat output is limited by the floor finish resistance combined with the maximum probe setting of 40 °C.

Temperature limits of the floor finish or its adhesive may adversely limit the design heat output.

Warmup plc limited warranty - Hydronic floor heating pipe

Registration can be completed online at www.warmup.co.uk In the event of a claim, proof of purchase is required in the form of an invoice or receipt

THIS WARRANTY DOES NOT EXTEND TO OTHER COMPONENTS WHICH ARE COVERED BY SEPARATE WARRANTIES. THIS WARRANTY DOES NOT AFFECT YOUR STATUTORY RIGHTS.

Limited warranty:

Warmup® underfloor heating pipe is warranted by Warmup plc ("Warmup") to be free from defects in manufacturing under normal use and maintenance, and is warranted to remain so subject to the limitations and conditions described below.

This warranty period begins on the date of purchase. The Lifetime warranty only applies if the product is registered with Warmup within 30 days after purchase and registered online at www.warmup.co.uk. Registration is confirmed only when confirmation of receipt is forwarded by Warmup plc

Warranty duration

- The PE-RT underfloor heating pipe is warranted for the LIFETIME of the floor under which it is fitted, except as provided below; your attention is drawn to the exclusions listed and the end of this warranty.

Notification of a suspected failure must be received in writing by Warmup within thirty (30) days of the suspected failure. Products believed to be defective must be made available to Warmup for testing and determination of cause

Upon acceptance of any warranty claim, Warmup shall have ninety (90) business days in which to investigate and determine whether it recognises responsibility for any believed defects in material or workmanship and determines the appropriate course of action to be taken.

It is expressly agreed that the sole remedies under this limited warranty shall be at the discretion of Warmup, plc to either: issue a refund, repair or replace any article which is proven to be defective. Any and all allowances made to customers for transportation, labour, repairs or all other work, are at the exclusive discretion of Warmup and shall be authorised in writing, in advance, by Warmup. Such cost does not extend to any cost other than direct costs of repair or replacement by Warmup and does not extend to costs of relaying or repairing any floor covering or floor.

The lifetime warranty applies to the pipes(s) if they:

1. Are registered with Warmup within 30 days after purchase.
2. Have not operated at a pressure of greater than 8 Bar.
3. Have not operated at a temperature of greater than 60^ C.
4. Are filled with treated water subtitle for use with PE pipes.
5. Are installed according to all applicable building code requirements.
6. Are selected, designed and installed by a qualified contractor according to installation instructions provided by Warmup which are current as of the applicable installation date.
7. Remain in their original installed location, such that the floor covering or screed over the product is not damaged, lifted, replaced, repaired or covered with subsequent layers of flooring.
8. Do not show evidence of accidental damage, misuse, lack of care, tampering, or repair or modification without the prior written approval of Warmup plc

SafetyNet™ Installation Guidelines: If you make a mistake and damage the pipe before covering the pipe with screed, levelling compound or floor covering, return the damaged pipe to Warmup within in 30 days along with your original dated sales receipt. WARMUP WILL REPLACE THE COIL OF PIPE (MAXIMUM 1 COIL OF PIPE PER ORDER) WITH ANOTHER COIL OF THE SAME MAKE AND MODEL - FREE.

Register your Warmup® warranty online at www.warmup.co.uk

(i) Pipes repaired by Warmup carry a 5 year warranty only. Under no circumstances is Warmup responsible for the repair or replacement of any tiles / floor covering which may be removed or damaged in order to affect the repair.
(ii) The SafetyNet™ Installation Guarantee is null and void once the pipe is covered with a screed, levelling compound, adhesive or floor deck.
(iii) Damage to the pipe that occurs after covering, such as lifting a damaged tile once adhesive has set, or subfloor movement causing floor damage, is not covered by the SafetyNet™ Guarantee.

Warmup plc

www.warmup.co.uk

[e-mail]

T: 0345 345 2288

F: 0345 345 2299

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