CALEFFI DeltaSol 268050 Guida

Circulation units

for solar thermal systems, with solar regulator DeltaSol® C+

28199

268-269 series

Function

Circulation units ar us d on th primary circuit of

solar th rmal syst ms to control th t mp ratur

in th hot wat r storag . Th pump insid th

units is activat d by th signal arriving from th

r gulator. Mor ov r, saf ty and functional d vic s

for optimum control of th circuit ar fitt d in th

units.

Th y ar availabl with flow and r turn conn ction

or with r turn conn ction only.

Som v rsions ar also compl t with th digital

r gulator D ltaSol®C+ for solar th rmal syst ms,

suitabl for th op ration and control of 9 diff r nt

typ s of solar th rmal syst ms.

INDEX

Function

Product range

Technical specifications

Characteristic components

Installation

Filling the system

Commissioning

Components 7

Application diagrams 8

INSTALLATION AND COMMISSIONING MANUAL

NOTICE

The followin instructions must be read and understood before installin , commissionin and

servicin the circulation unit.

Th saf ty symbol is us d in this manual to draw att ntion to th r sp ctiv saf ty instructions.

Th m aning of this symbol is as follows:

N.B! YOUR SAFETY IS INVOLVED. FAILURE IN FOLLOWING THESE INSTRUCTIONS MAY

RESULT IN INJURIES.

- Th circulation unit for solar th rmal syst ms must b install d by a qualifi d t chnician in complianc with

r l vant national and/or local r gulations.

- If th circulation unit is not install d, commission d and s rvic d corr ctly in accordanc with th instructions

giv n in this manual, it might not work prop rly and could put th us r in dang r.

- Mak sur that all conn ction fittings ar wat rtight.

- Wh n r alising hydraulic conn ctions, mak sur that thr ad d conn ctions ar not ov rstr ss d m chanically.

Ov r tim , xc ssiv str ss may caus br akag s with hydraulic l aks and damag to prop rty and/or p rsonal injury.

- Wat r t mp ratur s xc ding 50°C may caus s v r burns.

- Wh n installing, commissioning and s rvicing, tak th n c ssary pr cautions so that th s t mp ratur s will not

b hazardous for p opl .

CAUTION: Risk of electric shock. Remove the power supply before carryin out any work.

Failure in followin these instructions may result in personal injury or dama e to

property.

Product range

Cod 268050 Circulation unit with r turn conn ction 1–13 l/min siz 3/4”

Cod 269050 Circulation unit with flow and r turn conn ction 1–13 l/min siz 3/4”

Cod 268250 Circulation unit with r turn conn ction, with r gulator D ltaSol

C+ 1–13 l/min siz 3/4”

Cod 269250 Circulation uniti with flow and r turn conn ction, with r gulator D ltaSol

C+ 1–13 l/min siz 3/4”

Package content

Th packag contains:

Circulation units

• Th solar circulation unit compl t with front

and r ar insulation.

• Th wall fixing brack t.

Regulator (only for v rsions compl t with)

• Solar r gulator D ltaSol®C+.

• 4 t mp ratur prob s.

Accessories:

• Bag of 2 M5 scr ws, S6 scr w anchors and

wash rs.

Technical specifications

Materials

Shut-off valves

Body: brass EN 12165 CW617N

Ch ck valv : brass EN 12164 CW614N

T mp ratur gaug : st l / aluminium

Air se arator device

Body: brass EN 12165 CW617N

Instrument holder

Body: brass EN 12165 CW617N

S als: EPDM

O-Rings: EPDM

Flow meter

Body: brass EN 12165 CW617N

Transpar nt l v l gaug : PSU

Flow indicator: brass EN 12164 CW614N

Hydraulic s als: EPDM

Insulation

Mat rial: EPP

Av rag thickn ss: 30 mm

D nsity: 45 kg/m3

Working t mp ratur rang : -5

–

120°C

Th rmal conductivity: 0,037 W/(m·K) at 10°C

R action to fir (UL 94): class HBF

Performance

M dium: wat r, glycol solutions

Max. p rc ntag of glycol: 50%

Max. working t mp ratur :

- d a rator sid flow: 160°C

- pump sid r turn: 110°C

Max. working pr ssur : 10 bar

Saf ty r li f valv working t mp ratur rang : -30–160°C

Saf ty r li f valv s tting: 6 bar (for oth r s ttings, s 253 s ri s)

Ch ck valv min. op ning pr ssur (∆p): 2 kPa (200 mm w.g.)

Working t mp ratur rang of shut-off and ch ck valv : -30

–

160°C

Working t mp ratur rang of flow m t r : -10

–

110°C

Flow rat adjustm nt: 1–13 l/min

Flow rat indicator accuracy: ±10%

Pr ssur gaug scal : 0–10 bar

T mp ratur gaug scal : 0-160°C

Conn ctions: 3/4” F

Hos conn ction: 3/4” M

Fill/drain conn ctions: with Ø 15 mm hos conn ction

Grundfos Solar 15-65 um

Body: cast iron GG 15/20

El ctric supply: 230 V - 50 Hz

Max. pr ssur : 10 bar

Max. t mp ratur : 110°C

Prot ction class: IP 42

Digital regulator

El ctric supply: 230 V - 50 Hz

Nominal pow r consumption: 1,5 VA (12 V (ac))

4 Pt1000 prob inputs

2 r lay outputs with s miconductor with contact rating: 1 A

2 t mp ratur prob s with working rang : -50

–

200°C

Prob cabl working t mp ratur rang : -50

–

70°C

2 t mp ratur prob s with working rang : -50

–

200°C

Prob cabl working t mp ratur rang : -50

–

180°C

Ambi nt t mp ratur rang : 0

–

40°C

Prot ction class: IP 20

Dim nsions: 172 x 111 x 49 mm

Head available at the circulation unit connections

H (mm w.g.)

G (m3/h)

H (kPa)

UPS 15-65

0,2 0,4 0,6 0,8 1,0 1,2 1,4 00

H (mm w.g.)

G (m3/h)

H (kPa)

UPS 15-65

0,2 0,4 0,6 0,8 1,0 1,2 1,4

Power consum tion

P (W)

G (m3/h)

0,2 0,4 0,6 0,8 1,0 1,2 1,4

UPS 15-65

268 series Flow rat adjustm nt rang 1

–

13 l/min 269 series Flow rat adjustm nt rang 1

–

13 l/min

Characteristic components

1) Grundfos Solar 15-65 circulation pump

Saf ty valv with adjustabl outl t typ 253 s ri s

3) Fill/drain cock with control k y

4) Instrum nt hold r fitting with pr ssur gaug

5) Flow m t r

6) D a rator with air v nt

7) Flow t mp ratur gaug

8) R turn t mp ratur gaug

9) Pr -form d sh ll insulation

10) Shut-off valv with built-in ch ck valv

11) Conn ction kit for xpansion v ss l (optional)

12)

Display with synoptic diagram and t mp ratur indication*

13) R gulating k ys*

14) T mp ratur prob *

15) Stainl ss st l prob pock t cod 257004 (optional)

16) Hos conn ction

* only for v rsions with D ltaSol®C+ r gulator

aaa

100

120

140

160

bar

CL 2.5

l/min

aaa

100

120

140

160 0

100

120

140

160

bar

CL 2.5

l/min

75°65°

12°

Installation

• Fix th wall support brack t, using th fixing scr ws suppli d in th pack (1).

• Ins rt th r ar insulation, through th notch provid d (2).

• Ins rt th unit compon nts in th insulation using th sp cial notch s mad in th brack t and th slots in th compon nts. Block th

compon nts on th brack t, pulling th m downwards to that th y click into th ir housing (3).

• Establish th position for installing th xpansion v ss l at a distanc allow d by th l ngth of th fl xibl pip , using th brack t provid d.

Th latt r allows th us of xpansion v ss ls with a maximum capacity of 24 l, s th instructions conc rning th acc ssori s (4).

• Install th pip s of th whol syst m and conn ct th solar unit. S cur th compon nts and th pip s to th r ar insulation.

Fully tight n all th fittings.

• Th unit’s thr ad d fittings ar tight n d and t st d in th ass mbly phas at th factory. How v r, wh n commissioning it is n c ssary to

ch ck th s al of th fittings, p rforming a pr ssur t st.

• Mak th l ctrical conn ctions of th syst m, as sp cifi d in th r gulator instruction manual. Apply th front part of th insulation.

Fillin the system

• Op n th shut-off valv coupl d with th automatic air v nt, install d in th high st point of th solar th rmal syst m (1).

• Op n th shut-off and ch ck valv s, turning th control st ms (2) through 45° (do not r mov th t mp ratur gaug s).

• Fill by m ans of a pump, using th cock (A) locat d at th low st point of th syst m, until air no long r com s out of th air v nt (1). If th

solar th rmal syst m is mad using wat r pr mix d with antifr z , any top-ups must b carri d out using a mixtur with th sam

proportions.

• Clos th shut-off valv of th air v nt (3).

• Clos th cock (A).

aaa

100

120

140

160 0

100

120

140

160

bar

CL2.5

l/min

1234

Commissioning

• Clos th flow m t r fil/drain cock (1) and incr as th syst m pr ssur up to th maximum d sign pr ssur , by m ans of th xt rnal filling

pump appli d to th fill/drain cock of th saf ty unit.

Wh n this pr ssur is r ach d (2), clos th fill/drain cock of th saf ty unit using th cap

quipp d with control k y.

• Op n th valv s of th unit (3) and switch on th pump of th solar circulation unit (do not r mov th t mp ratur gaug s).

• L t th wat r circulat for a c rtain tim , th n ch ck th wat r tightn ss.

• Op n th air v nt again, install d in th high st point of th solar th rmal syst m, r p ating th d a ration phas , bri fly activating th

circulation pump.

• R stor th d sir d working pr ssur with th filling pump.

• Th syst m flow rat may b chang d by m ans of th flow m t r (4). This modulation is p rform d by th ball valv with which it is

quipp d (s r sp ctiv charact ristics). To r gulat /limit th flow rat it is r comm nd d to follow th indications of th solar pan l

manufactur r.

• Aft r th first op rating hours, th solar th rmal syst m must b d a rat d again, both in th high st point and on th air s parator (on th

v rsions wh r this is cont mplat d).

Onc d a ration has b n compl t d, ch ck th syst m pr ssur and if n c ssary r stor to th d sir d working pr ssur .

Draining the s stem

• Th draining op ration is n c ssary if th syst m has b n fill d only with wat r and th r is a risk of frost.

• Op n th shut-off and ch ck valv s, turning th ball valv through 45°. Op n th air v nts in th high st point.

• Op n th drain cock at th low st point of th syst m.

Flushing the s stem

•

Clos th flow m t r r gulating ball valv (1). Th n op n th fill/drain cock, by turning it count r-clockwis using th cap with control k y (2).

• By m ans of a (s parat ) xt rnal pump appli d on th fill/drain cock of th saf ty unit (3), l t th m dium flow through th solar pan ls and

th h at xchang circuit until th m dium com s out of th fill/drain cock (4) of th flow m t r.

• Bri fly op n th flow m t r ball valv (4) to xp l all th air from th syst m.

• L av th xt rnal pump running on th syst m for a f w minut s to nsur corr ct flushing.

aaa

100

120

140

160 0

100

120

140

160

bar

CL2.5

l/min

1234

Shut-off and check valves

Th shut-off valv s ar quipp d with a built-in ch ck valv ,

position d insid th ball.

1. To allow th passag of th fluid

in both dir ctions, th ball valv s

must b op n d at 45°, using a

9 mm fix d wr nch.

Th ch ck valv is op n d by th

ball, s figur (A).

2. In normal syst m op ration, th

ball valv s must b compl t ly

op n.

Air separator device

Th solar circulation units with flow and r turn conn ction ar

quipp d with an air s parator d vic on th flow lin . Th gas s

s parat d from th th rmal carri r m dium coll ct at th top of th

d a rator.

Th coll ct d gas s must b vacuat d from tim to tim ( v ry

day aft r commissioning and aft rwards, d p nding on th

quantity of air, onc a w k or onc a month) using th manual air

v nt with a suitably siz d scr wdriv r.

To maintain optimal ffici ncy of th solar th rmal syst m,

aft rwards, it is n c ssary to

v nt th syst m v ry six

months by using th d a rator.

Full closing and opening of the valve

Th valv can b

compl t ly op n d or

clos d.

A slot on th obturator

st m indicat s th

status of th valv .

Correction for liquids with different density

Th variation in th flow rat r ading r mains within th rang of

accuracy indicat d (±10%), for glycol p rc ntag s up to 50%.

Fully closed

Fully o en

Captiv nut

Flow rat adjustm nt

Fitting 1/2” F

Graduation

Fitting 3/4” F

Flow meter

Th flow m t r is a floating gaug flow rat m asurator with a

built-in r gulating ball valv .

It works within th rang of 1–13 l/min.

The flow meter must be fitted in a vertical osition only.

A th rmom tric lab l is plac d on th back of th flow m t r to

signal if th maximum p rmitt d t mp ratur (110°C) has b n

xc d d:

whit color = t mp ratur not xc d d;

dark color = maximum t mp ratur xc d d.

Th lab l r moval mak s th manifactur r warranty on th d vic

xpir .

Th l v l is tak n from th

top dg of th float.

N.B! Us only a

9mm fix d

wr nch to r gulat th flow

m t r.

➜

open closed

Thermometric

label

Application diagrams

Shut-off valve

Pump

Air vent

Expansion vessel

Temperature gauge

Safety relief valve

Automatic

filling

100

120

140

160 0

100

120

140

160

bar

CL2.5

aaa

100

120

140

160

bar

CL2.5

bar

CL2.5

aaa

100

120

140

160

bar

CL2.5

bar

CL2.5

l/min

Shut-off valve

Pump

Air vent

Expansion vessel

Temperature gauge

Safety relief valve

Automatic

filling

aaa

100

120

140

160 0

100

120

140

160

bar

CL2.5

100

120

140

160

bar

CL2.5

bar

CL2.5

100

120

140

160

bar

CL2.5

bar

CL2.5

l/min

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