Honeywell ZG 215N User manual

OPERATION AND PUTTING INTO SERVICE

Comfort Compact Controller ZG 215N

CB50266

CBA

1476

L1 L2 P1 A

P1 ACB

ZG215N

-8

auto

10 12 14 16 18 20 22 24 26 28 30

20 16 12 8 6 4 2 Xp

°C

100

20 ...9 0 °C

1,4

2,8

4,2

5,5

7,0

8,2

9,6

10,9

12,4

13,9

8311.7352

Hot Water Heating with Room Control

////

ZG215N

CBZG117.cdr

ZG Control Unit

VM Servomotor

ZR Heating mixing valve

VF Flow sensor

TW Temperature selector

with room sensor

PHeating circuit pump

Operation as a Heating Control

(Fig. left)

The remote control (TF) is composed of a temperature sensor

and atemperature selector. (If desired also two separated devices

can be used.)

nThe temperature sensor measures the actual room temperature.

nThe desired value for the room temperature is to be set on

the temperature selector.

On the basis of both of these values the control unit calculates the

necessary water temperature (flow temperature). It is measured by

the flow sensor (VF). If the flow temperature differs from the set

value, the control unit adjusts themixing valve (ZR) with the ser-

vomotor (VM) so that the right heat input is provided to the radi-

ators.

Themixing valve determines the flow temperature by mixing the

hot water from the boiler with the colder return water.

Theheating circuit pump (P) provides for the circulation of the

hot water. It is not operated by the control unit.

Thetemperature selector (TF) is used as a remote control, e.g. if

the control unit is mounted in the cellar: by means of the selector

knob P2 the room temperature can be changed. With the party

switch S1 the night economy option can be suspended.

Air-handling system with mixing chamber

ZG Control Unit

VM Servomotor

ZR Heating mixing valve

LF Air duct sensor

TW Temperature selector

FT Frost protection thermo -

ZG 215N

///

CB2283

////////

Air-handling system with heating coil

ZG 215N

///

CB2286

////////

ZG Control Unit

VM Servomotor

ZR Heating mixing valve

LF Air duct sensor

TW Temperature selector

FT Frost protection thermo -

Operation as an Air-handling Control

(fig. left both)

The operation of the air-handling control is basically the same as

for warm water heating. Instead of the flow temperature, the air

temperature in the supply duct is measured.

The control unit calculates the necessary heat demand and regula-

tes the drive motor so that the desired room temperature is reached.

Depending on the layout of the air-handling system, the drive mo-

tor operates on a different part of the system:

nIn case of a mixing chamber system the blinds for the inco-

ming and outgoing air are set.

nIn case of heating coil control the hot water temperature is

set for air heating.

In both of types of system, the supply of heat is regulated so that the

room temperature set with the temperature selector is maintained.

Operating and Display Components

Pos.Function Basic Setting

Proportional Range

Operating point setting

CReduced Mode -8

P1 Sensitivity 5

SOperating mode selector auto

L1 “Hotter” LED (red)

L2 “Colder” LED (green)

1Instructions compartment

2Heating curve diagram

3Basic Settings

4Reserve trip pins

5Inserted trip pins

6Timer (optional)

7Pointer for current time

Settings on the Temperature Selector

P2 Selector knob 0

S1 Party switch auto

Operating mode selector

manu the control unit is deactivated (the timer runs). The mixing

valve can be set manually (by hand). The pump is switched on.

auto Recommended setting for greater energy saving: automatic

change between day and reduced mode according to the timer with

night switch-off.

Manual day mode, timer inactive.

Manual night mode according to the settings on the

setting knobs Bminus C, the timer remains inactive.

LED’s

L1 L2

Both LED’s light up:

“neutral”

– mixing valve stops

only red LED lights up:

“hotter”

– mixing valve opens

only green LED lights up:

“colder”

– mixing valve closes

In the manu settings of the operating mode selector Sthere is no

LED display.

Putting into service

nSet the timer 6with the current time.

nSet the operating mode selector Sto auto .

The remaining basic factory settings are printed under 3on the

control unit.

Timer for reduced mode 6

With the aid of the timer, the room temperature during idle periods

can be reduced automatically to save on operating costs.

The timer has a built-in power reserve of approx. 60 hours thanks

to a rechargeable battery.

Changing the program

Factory settings: red pin 6:00, blue pin 22:00.

nPull out the trip pin and insert it again at the desired

switch-on time. Push in the trip pins until they reach the stop.

Owing to the different lengths, the trip

pins must always be inserted in a red/blue

alternate order. Thered trip pin switches

on day mode, while the blue pin activates

reduced mode.

CB5044.7.cdr

In order to make sure that the rooms are heated well in the morning,

the heating system’s day mode should be activated between half an

hour and an hour before using the rooms.

Energy saving tip: Reduced mode can be activated up

to an hour before the room is left. The storage capaci-

ty of the heating system and building is enough to

keep the rooms warm for some time.

Timer with day program

The day program is repeated every 24 hours. If a (second) decrease

in temperature is desired in the course of the day to save energy, the

program needs to be extended. Take the extra trip pins 4and insert

them at the desired time.

Example:

Desired time program

Normal temperature:

6:00 h to 8:00 h and 16:00 h to 22:00 h night decrease:

22:00 h to 6:00 h

day decrease: 8:00 h to 16:00 h

Position of the trip pins:

red pin 6:00 h – Start day mode (normal temperature)

blue pin 8:00 h – Start day decrease

red pin 16:00 h – Start day mode (normal temperature)

blue pin 22:00 h – Start night decrease

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