VALVEX GZ.07A - Thermostatic Head Manual

Table of Contents

Contents

1 Intended use
2 Operation
3 Technical specification
4 Temperature setting
5 Assembling instructions
6 Properairing
7 Documents / Resources
- 7.1 Download manual

Intended use

Thermostatic heads are used in any type of central heating systems as radiator valve controlling elements. Automatic control of temperature in premises enables User's setting an individual comfort level (condition) at significant saving of heat energy and hence heating cost reduction.

TYPE	INTENDED USE
GZ.07A	Used to control IRIS 4445.51, 4445.61 thermostatic radiator valves Used to control compact radiators with HEIMEIER valve inserts (radiator manufacturer list is included in the assembling instructions)

Operation

Thermostatic head construction

Upon a change in the room temperature the liquid contained in the head's sensor changes its volume causing a motion of the pressure capsule. The motion is transferred to the valve head. The valve head's dislocation against the valve seat increased, decreases or cuts-off hot water flow through the radiator. Automatic control of the heating water flow depending on air temperature in the heated premises ensures unquestionable benefits for the User.
Using in a central heating system of a set of a thermostatic head together with a thermostatic radiator valve shall enable:

significant (up to 25%) heating cost reduction,
enhanced „heat comfort", avoided overheating of premises,
maintained fixed pre-set temperature in heated premises, regardless of outdoor temperature changes,
use of „free" heat given up by lighting, electrical equipment, sunlight and people inside.

Technical specification

PARAMETERS	VALUE
Lowest set value	279 K (6°C) marked *
Temperature setting range (in head's surroundings)	279 K to 302 K (6°C to 29°C)
Highest allowable static pressure	1 MPa
Highest allowable pressure drop	0,06 MPa
Maximum heating water temperature	373 K (100°C)
Transportation temperature	253 K to 323 K (-20°C o +50°C)

Temperature setting

The following room temperatures correspond to individual temperature setting of GZ.07Athermostatic head:

It's been known from many years' experience that maintaining the foregoing temperatures in each premises is a reasonable compromise between heat comfort and energy saving. By turning the head handwheel a chosen point is set on the scale that corresponds to the desired temperature, just in front of the indicator. After ca. 1 hour the temperature shall be checked in the room's representative spot using a room thermometer. If the room temperature slightly differs from that set on the setter, the setting should be adjusted accordingly (i.e. gradually increased or decreased and the room temperature re-checked).

It should be remembered that:
Turning counter-clock wise increases the room temperature.
Turning clock wise decreases the room temperature.
Anti-freezing protection (max. to the right) - if you intend to leave the premises for a longer tome in winter, the thermostatic head should be turned up to the position that protects against freezing – marked *. The * setting guarantees that with the heating system working the room temperatures will not fall below 6, and hence the system will be protected against freezing. Using this setting is recommended also in a room that is not currently
used.

Assembling instructions

TYPE	ASSEMBLING
GZ.07A	unscrew the protective cap from the previously mounted thermostatic valve, turn the head handwheel counter-clock wise as far as possible (i.e. to position „ "),5 put the head on the valve in such a manner that the setting indicator is clearly visible, screw down the clamp nut with fingers with no additional tools, check the assembly by turning the head handwheel from left to right, select setting that corresponds to the desired room temperature.
GZ.07A	turn the head handwheel counter-clock wise as far as possible (i.e. to position „5"), put the head on the HEIMEIER valve insert in such a manner that the setting indicator is clearly visible, be sure that protrusions in the head base fit precisely into matching recesses in the HEIMEIER valve flange. *Note!* Manufacturers of radiators with HEIMEIER valve inserts: Biasi, Celikpan, Demrad, Dianorm, Diatherm, Henrad, Kermi, Korado, Manaut, Purmo, Radson, Stelrad, Superia, U.S. Steel, Veha. screw down the clamp nut with fingers with no additional tools, check the assembly by turning the head handwheel from left to right, select setting that corresponds to the desired room temperature.

To lock the selected temperature setting:

Set the head handwheel to the desired value.
Pull the locking ring.
Turn and push the ring so that the 2 pins of the locking ring were inserted into openings of the indicator ring opposite the „3" position.

To set the maximum temperature limit:

Set the head handwheel to the desired maximum value.
Pull the locking ring.
Turn and push the ring so that the 2 pins of the locking ring were inserted into the first two openings to the left of the „3" position on the indicator ring.

To set the minimum temperature limit:

Set the head handwheel to the desired minimum value.
Pull the locking ring.
Turn and push the ring so that the 2 pins of the locking ring were inserted into the first two openings to the right of the „3" position on the indicator ring.

To undo the lock and limits (restore standard settings):

Pull the locking ring.
Set the head handwheel to the „3" position.
Turn and push the ring so that the 2 pins of the locking ring were inserted into the openings in the indicator ring opposite the "*" position.

Properairing

The thermostat quickly reacts to cold air inflow. Short and intense airing is therefore recommended. If a longer airing is required, the thermostatic head handwheel should be turned right as far as possible. If you had locked the desired setting before, do the following first:

pull the locking ring,
turn it „one opening" to the left and push it so that the two pins of the locking ring were inserted into the first two openings to the left of the „3" position on the indicator ring.
finally, turn the head handwheel all the way to the right.

It should be remembered that:

the head should be exposed to neither sunlight, nor any other hear source,
the head should not be covered with curtains, covers, furniture etc. because this creates a heat build-up zone, where the thermostat can not sense the representative room temperature, and therefore can not control it properly,
after the heating season it is recommended to set the head handwheel to „5" position,
the head may be cleaned with lukewarm water and delicate household cleaning agents.

VALVEX S.A., ul. Nad Skawą 2, 34-240 JORDANÓW CENTRAL OFFICE PHONE NO. (018) 269 32 20, 269 32 49; FAX: (018) 269 32 11 Complaints Section: 800 192 922, e-mail: valvex@valvex.pl, info@valvex.pl	Issue date:	08.2008
	No.	4445.00/IO

GUARANTEE CARD
Product THERMOSTATIC HEAD type: GZ.07A	Quality control signature
Guarantee terms and conditions: The Manufacturer grants herewith guarantee for the period of 5 years since the sale date. Any defect disclosed in the guarantee period shall be corrected free of charge within 14 working days after the defect notice date. Defect or damage notices will be received by the VALVEX SA Claim Warehouse (phone 018 26 93 249 ext. 333). A defected product must be delivered for guaranteed repair to the Claim Warehouse with a statement of claim grounds and a copy of the purchase document with an eligible stamp of the selling outlet and an eligible purchase date indication. The guarantee does not cover any part normally torn and worn in operation, any defect caused by assembly in operation non-compliant with the instructions, any defect with traces of mechanical and/or thermal damage, and/or user intervention. The Buyer shall loose any and all rights under the guarantee in the event of: the guarantee card's loss or damage, self-willed repair and/or disassembly, inappropriate or non-compliant with the instructions operation. THE QUALITY ASSURENCE SYSTEM IS ISO 9001 COMPLIANT
	Retail outlet stamp and worker's signature Sales date