Caleffi solar iSolar WMZ Manual - Page 5

Browse online or download pdf Manual for Measuring Instruments Caleffi solar iSolar WMZ. Caleffi solar iSolar WMZ 16 pages.

Print Page

Installation

1.1 Mounting

cover

cable conduits with

strain relief

upper fastening

lower fastening

1.2 Electrical connection

CALEFFI

NORTH AMERICA, Inc.

Milwaukee, WI 53208

CALEFFI

NORTH AMERICA, Inc.

Milwaukee, WI 53208

V40

VBus

9 10

sensor terminals

VBus

1.3 Flowmeter

note:

Versions V40 0.6 to 2.5 are suited for horizontal as well as for

vertical installation. Versions V40 3.5 to 15 are for horizontal

installation only. In order to avoid a pressure surge caused by

cavitation in hydronic systems, the heat transfer fluid should

be filled in when it is cold, and de-aerators should be used.

Pressure surge and turbulent flow ratios lead to damage of

the sensitive measuring instruments.

display

push button

fuse T0,8 A

fuse

T0,8A

Netz / Mains

IP 20

12 13 14

V40

VBus

protective grounding

9 10

12 13 14

terminals

power supply

terminals

Warning!

Opening the housing will expose live parts!

Î Switch off power supply and disconnect

the device from power supply before

opening the housing!

The unit must only be installed

• in a dry interior location

• in a non-hazardous location

• away from electromagnetic fields

The controller must additionally be supplied from a dou-

blepole switch with contact gap of at least 0.12'' [3 mm].

Route sensor cables and power supply cables separately.

Î Unscrew the cross-head screw from the cover and

remove it along with the cover from the housing

Î Mark the upper fastening point on the wall and drill

Î Fasten the enclosed wall plug and screw leaving the

head protruding

Î Hang the housing from the upper fastening point and

mark the lower fastening point through the hole in the

terminal box (centers 5.1'' [130 mm])

Î Drill and insert the lower wall plug

Î Fasten the housing to the wall with lower fastening

screw and tighten

Î Complete wiring connections in accordance with ter-

minal allocations, see chap. 1.2 "Electrical connection"

Î Place the cover back onto the housing

Î Fasten the cover by means of the cross-head screw

Electrostatic discharge can cause damage of elec-

tronic components

Warning: high-voltaged components

The power supply of the controller must be carried out via

T0,8A

an external power supply (last step!). The supply voltage must

Netz / Mains

be 24 V

. Flexible cables are to be attached to the housing

using the enclosed strain reliefs and the respective screws.

IP 20

In order to use the iSolar WMZ along with a flowmeter V40,

the following connection is to be carried out (polarity of the

separate terminals is arbitrary):

1 / 2 = sensor S1 (flow temperature)

3 / 4 = sensor S2 (return temperature)

5 / 6 = flowmeter V40

9 / 10 = VBus

The power supply connection is carried out via the terminals:

= neutral conductor N

= line L

12 / 13 / 14 = protective grounding terminals

A flowmeter V40 is used in order to determine the volu-

metric flow rate in the solar circuit. The installation is to

be carried out taking the flow direction into consideration

(consider direction indication on the flowmeter). In order

to tranquilize the flow ratio, an inlet and an outlet distance

of 30 cm in front of and behind the flowmeter have to be

taken into account.

5 |