Honeywell ZG 215N, ZG215VN, ZG252N MOUNTING INSTRUCTIONS

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Compact control units

ZG 215N / 215 VN / 252 N

MOUNTING INSTRUCTIONS

Mounting of the Control Unit

It can be mounted in any dry room, e. g. the boiler room. The device
can be mounted either in a cubicle door or on the wall.

Maximum permissible ambient temperature: 45 °C.

Ë

Door Mounting

Ê The casing cover isheldby a snap hinge closure.Press it inthe di

rection of the arrow on the left side and pull out.

Ë Insert the control unit in the dedicated door opening

(183 x 126 mm).

Ì Expand the retaining clips at the ends and insert in the relevant

holes. Fix into place the retaining clips by pressing down in the
fastening position.

Í Execute the electrical connection in the base (see the next page).

Then put on the base.

Important:
If the heating system is empty, the ZG 252N’s operating mode

selector is to be positioned on 2 . By doing so, the circulation
pump is deactivated and protected against dry-running.

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ÊË

ÌÍ

ÎÏ

Ð

Wall mounting

Ê The casing cover is held by a snap hinge closure.

Press it in the direction of the arrow on the left
side and pull out.

Ë Hold the discharge compartment by the handle

and turn out to the right by exerting a light pres
sure. The instructions manual is kept here.

Ì Press the timer on bothpin inthe direction of the

arrow.

Í Pull out the timer.
Î Hang the slide of the instructions case in the

relevant recess of the insert.

Ï Pull the controller insert out of the casing with

the aid of the slide on the instructions case.

Ð Press the left lock pinto theleft witha screwdri

ver; by doing so, the case is freed from the devi
ce’s base.

Ñ Mount the device’s base with two 0.4 mm Æ

screws and dowels horizontally on the wall.

The assembly is to be carried out in the opposite
order.

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Ñ

Electrical Connections

The electrical connections are to be carried
out by a technician!

Cross sections

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Left terminal strip (base):
230 V AC 1.5 mm²

(connection to the control unit, servomotor,
pump)

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Right terminal strip (base):
18 V DC >= 0.75 mm²

(connection to the sensors and selectors)

The 18 V lines are to be laid separately from
the 230 V lines. Use shielded cablesin the pre

sence of intense HF disturbance fields!

Wiring

The single accessory parts are to be connected ac
cording to the wiring diagram on the back of the ca

sing of this device model. When using the ZG 252N
in low temperature heating systems (e.g. floor hea

ting) an additional thermostat is recommended to
provide separate over-temperature limitation. With

230 V/50 Hz the servomotor and circulation pump
require the jumper from terminal 5 to 6.

The local regulations on earthing and
resetting are to be followed carefully

when connecting the device.

Earlier temperature selector and sensor versions
without additional letters A (e. g. TW 20, RF 20,

TF 20, etc.) have the same electrical connections
and the same resistance values as the device

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versions with with additional letter A.

Noise suppression

Our control units are all provided with noise sup

­pression.

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