Product Overview

ManualsBrandsCaleffi Manuals668S1 Twistflow Manifolds1-1/4" TwistFlow Inverted Manifold w/ Temp Gauge (8 Outlets)

01144/11 GB

Replaces 01144/07 GB

Pre-assembled distribution manifold

for radiant panel systems

668...S1 series

Function

The distribution manifold for radiant panel systems is used to

optimally distribute the thermal medium in underfloor heating

system circuits, in order to improve the control of the panel thermal

emission.

They are offered in a pre-assembled version comprehensive of:

flow meters to regulate and check the flow rate on the flow

manifold; manual circuit shut-off valves fitted for thermo-electric

actuator on the return manifold; end fittings complete with

automatic air vent and multi-position valves with system fill/drain

cocks; differential by-pass kit to keep the head balanced as the

flow rate varies; pair of shut-off ball valves and brackets for box or

wall mounting.

Reference documentation

- Tech. Broch. 01041 Automatic flow rate regulators with

cartridge in steel, 120 - 125 - 103 series

- Tech. Broch. 01042 Thermo-electric actuator, 6561 series

- Tech. Broch. 01142 Thermo-electric actuator with manual

opening and position indicator, 6563 series

- Tech. Broch. 01054 Automatic air vents MINICAL

- VALCAL

5020 - 5021 - 5022 series

CALEFFI

Product range

6686...S1 series Pre-assembled distribution manifold for radiant panel systems size 1”

6687...S1 series Pre-assembled distribution manifold for radiant panel systems size 1 1/4”

Technical specifications

Materials

Flow manifold

Body: brass EN 1982 CB753S

Flow rate balancing valve

Headwork: brass EN 12164 CW614N

Obturator: brass EN 12164 CW614N

Flow meter body: PSU

Spring: stainless steel

Hydraulic seals: EPDM

Adjustment locking cover: ABS

Return manifold

Body: brass EN 1982 CB753S

Shut-off valve

Headwork: brass EN 1982 CB753S

Obturator stem: stainless steel

Obturator: EPDM

Springs: stainless steel

Seals: EPDM

Knob: ABS

Shut-off ball valves

Body: brass EN 12165 CW617N

Ball: brass EN 12164 CW614N, chrome plated

Knob: aluminium EN AB 46100

End fitting

Body: brass EN 12165 CW617N

Air vent

Obturator stem: brass EN 12164 CW614N

Spring: stainless steel

Seals: EPDM

Float: PP

Multi-position valve

Ball: brass EN 12165 CW617N

Control lever: PA66GF

Hose connection: brass EN 12164 CW614N

Performance

Medium: water, glycol solutions

Max. percentage of glycol: 30%

Max. working pressure: 10 bar

End fitting max. discharge pressure: 2,5 bar

Working temperature range: 0–80°C

Flow meter scale: 1–5 l/min

Accuracy: ±15%

Main connections: 1”, 1 1/4” F

Centre distance: 195 mm

Outlets: 3/4” M - Ø 18

Centre distance: 50 mm

ACCREDITED

ISO 9001 No. 0003

ISO 9001 FM 21654

Summary of content (16 pages)

PAGE 1
Pre-assembled distribution manifold for radiant panel systems CALEFFI 668...S1 series 01144/11 GB ACCREDITED ISO 9001 FM 21654 ISO 9001 No. 0003 Replaces 01144/07 GB Function The distribution manifold for radiant panel systems is used to optimally distribute the thermal medium in underfloor heating system circuits, in order to improve the control of the panel thermal emission.
PAGE 2
Dimensions 108 1 2 1 2 1” o 1 1/4” 3 1 2 3 1 2 3 3 4 4 4 4 L/MIN L/MIN L/MIN L/MIN HOBBY CAMERA BAGNO WC SOGGIORNO CALEFFI 59 1” o 1 1/4” 195 CALEFFI 1 2 3 4 L/MIN CALEFFI SOGGIORNO CALEFF 25 3/4” 50 L TOTAL Code (1”) Code (1 1/4”) No.
PAGE 3
Construction details Flow manifold The flow manifold is equipped with built-in flow meters and flow rate balancing valves. Using the balancing valve with the special tapered obturator, the flow rate to the individual circuits can be adjusted accurately as required, with the setting being read directly from the single flow meter with a scale of 1–5 l/min (2). This simplifies and speeds up the circuit setting process, with no need for reference graphs.
PAGE 4
Manifold modularity Maintenance The manifolds are modular thanks to the threaded connections with O-ring seal. The special machining of the thread on these connections enables perfect alignment between the two coupled parts once they are fully screwed in. The headwork of each manifold can be removed and replaced with suitable spare parts. End fitting Automatic air vent The automatic air vent automatically expels the air accumulating in the circuits of the air conditioning system.
PAGE 5
External shape of the manifolds and brackets The casting process makes it possible to shape the external manifold geometry as required. In this way, recesses (1) have been made in correspondence with the pipe passage coming down from the upper manifold, to allow it to be partially housed, for the benefit of depth.
PAGE 6
Hydraulic characteristics In order to determine the hydraulic characteristics of the circuit, it is necessary to calculate the total head loss suffered by the flow rate of medium on passing through the devices forming the manifold assembly and the radiant panel circuits. From a hydraulic point of view, the system consisting of the manifold assembly and the circuits can be represented as a set of hydraulic elements arranged in series and in parallel.
PAGE 7
Hydraulic characteristics 0,6 45 40 35 0,45 0,4 0,35 30 0,3 25 0,25 0,5 0,2 450 400 0,1 120 1,2 100 50 20 1 90 80 70 0,9 0,8 0,7 60 0,6 45 40 35 0,45 0,4 0,35 30 0,3 25 0,25 18 16 14 0,18 0,16 0,14 12 0,12 0,5 0,2 10 500 350 300 250 180 200 160 140 120 80 90 100 50 25 20 70 0,12 60 12 10 45 0,18 0,16 0,14 40 18 16 14 35 20 60 30 50 1 0,9 0,8 0,7 Kv 1,85 2,50 Kv0,01 185 250 -- Kv in in mm /h3/h per perdita carico Kv == portata flow rate foru
PAGE 8
Using the balancing valves with flow meter The balancing valves in the flow manifold make it possible to balance each individual panel circuit to obtain the design flow rates in each loop. Considering the following data: - medium flow rate across each circuit - head loss generated in each circuit by this flow rate: ∆PCircuit = ∆PLoop + ∆PSV (∆PShut-off valve) SYSTEM FLOW ∆PBV BV - available head on the panel circuit or predefined head: HPredefined ≥ ∆PCircuit + = ∆PBV + ∆PLoop + ∆PSV ∆PTot.
PAGE 9
MANIFOLDS AND ACCESSORIES 18 10 9 14 8 15 1 2 7 12 13 1 2 1 2 3 System Flow CAMERA CALEFFI 11 17 4 1 2 1 2 3 4 L/MIN CALEFFI 16 3 5 1 2 3 3 6 3 4 4 4 4 L/MIN L/MIN L/MIN L/MIN CAMERA HOBBY WC SOGGIORNO CALEFFI System Return CALEFFI CAMERA CALEFFI CAMERA HOBBY SOGGIORNO CALEFFI WC ∞C 1) Flow manifold with flow meters and flow rate balancing valves, 667...S1 series 2) Return manifold with built-in shut-off valves fitted for thermo-electric actuator, 666..
PAGE 10
Operating principle The by-pass valve contains a check obturator integrated with a counter-acting spring. When the fixed setting differential pressure value is reached, the valve obturator opens gradually. In this way the flow rate is recirculated and, being proportional to the closure of the thermo-electric valves, keeps the differential pressure in the manifold circuit at a constant level.
PAGE 11
Self-adjustable diameter fitting for single and multilayer plastic pipe 680 series Function The self-adjustable fitting for single and multilayer plastic pipes is a mechanical device that allows safe and easy connection of the radiant panel system pipes to the relevant manifolds. Due to the specific requirements of this type of system, it has been designed to meet the need of having a versatile fitting, capable of adjusting to different pipe diameters.
PAGE 12
Thermo-electric actuators 6561 tech. broch. 01042 Thermo-electric actuator for manifolds. For 668...S1 series manifold Normally closed. Code 656102 656104 self-extinguishing polycarbonate (code 656102/04) white RAL 9010 (code 656112/14) grey RAL 9002 Performance Normally closed Electric supply: Starting current: Running current: 230 224 tech. broch. 01042 Thermo-electric actuator for manifolds. For 668...S1 series manifolds Normally closed. With auxiliary microswitch.
PAGE 13
Automatic flow rate regulators 120 AUTOFLOW® tech. broch. 01041 Combination of automatic flow rate regulator and ball valve. Factory set to automatically maintain the flow rate between ±5% of the established value. Can be inspected, cleaned and the internal cartridge replaced without having to remove the valve body from the pipe. Fitted for use with pressure test ports to check operation. Fitted for connection to a drain pipe.
PAGE 14
Manifolds 666...S1 Technical specifications Return manifold with built-in shut-off valves fitted for thermo-electric actuator. Materials Return manifold Body: Code Connection 666735S1 666745S1 666755S1 666765S1 666775S1 666785S1 1 1 1 1 1 1 1/4” 1/4” 1/4” 1/4” 1/4” 1/4” F F F F F F No. of outlets x x x x x x 3 4 5 6 7 8 Outlets 3/4” 3/4” 3/4” 3/4” 3/4” 3/4” M M M M M M 667...S1 Flow manifold with built-in flow meters and flow rate balancing valves.
PAGE 15
Air vent Brackets 5020 658 Automatic air vent with hygroscopic cap. In stamped brass. Max. working pressure: 10 bar. Max. drain pressure: 2,5 bar. Max. working temperature: 110°C. Pair of brackets for use with 659 and 661 series boxes or for direct wall mounting. Complete with screws and wall anchors. Code Code 502043 658100 1/2” M Screw plug Fitting 386 347...S1 Screw plug with nut, for manifold outlets.
PAGE 16
Boxes Code 659 661 Box for 668....S1 series manifolds. Wall or floor installation (with 660 series). Closure with a push-fit clamp. Made of painted sheet steel. Depth adjustable from 110 to 140 mm. Box for 668...S1 series manifolds. Closure with a push-fit clamp. Made of painted sheet steel. Depth adjustable from 110 to 150 mm. Complete with supports for floor installation. Height adjustable from 270 to 410 mm.