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SVM - Wall Outlet

Dimensions in mm, weights in kg.

These technical conditions define the range of manufactured dimensions and designs of grilles. These technical conditions apply to manufacture, designing, ordering, delivery, installation, and operation.

I. GENERAL

1. Description

Grilles are end air-conditioning elements used to distribute air in air-conditioned, ventilated and heated rooms.

Grilles made of aluminium sections are supplied. They consist of rectangular frame which holds either fixed or rotating blades. The tightness of grilles is ensured along the perimeter by means of sealing.

2. Design

Grilles are supplied either with fixed or rotating blades. They can be equipped with R1 type regulation with counter-rotating blades. Fixed blades are pitched at 12.5 mm or 20 mm, while the rotating ones are pitched at 20 mm. Grilles are wall-mounted either by means of fixing frame or regulation device.

Grilles should be installed in 3K5 class environment protected against weather conditions according to ČSN EN 60 721-3-3 and in BNV rooms according to ČSN EN 1127-1.

Temperature in the place of installation is permitted to range from - 20°C to + 70°C.

Grilles with vertical rotating blades	Grilles with horizontal rotating blades with R1 regulation

3. Dimensions

Table No .1

Atypical dimensions should be discussed with the manufacturer in advance.

Grilles with fixed vertical blades, blade pitch t = 20

Grilles with fixed horizontal blades, blade pitch t = 20

Grilles with fixed vertical blades, blade pitch t = 12.5

Grilles with fixed horizontal blades, blade pitch t = 12.5

Grilles with adjustable vertical blades

Grilles with adjustable horizontal blades

Grilles with adjustable horizontal blades (W ≥ 750 mm)

Opening for installation of a grilles with a-fixing frame

UR2 fixing frame fixture detail (for immuring)

UR2 fixing frame with immured fixtures

R1 regulation

UR2 fixing frame with immured fixtures

4. Weights

Weights of grilles - available at the manufacture upon request.

5. Location, Installation

Grilles are intended for installation in building structures. The installation is made by means of fixing frames or the regulation device. Grilles include fixing screws, covers and sealing.

Installation examples

by means of UR fixing frame

by means of UR2 fixing frame with immured fixtures

II. TECHNICAL DATA

6. Calculation and Determination Quantities

Flow not influenced by ceiling

Flow influenced by ceiling

Air flow deflection in non-isothermal flow

Blade adjustment angle α and air-flow opening angle γ

V [m3.h-1] - volumetric air flow for one grille   ∆pc [ Pa] - total pressure loss at = 1,2 kg.m-3   LWA [dB(A)] - acoustic power level   L [m] - flow length   wef [m.s-1] - effective velocity   wL [m.s-1] - air flow velocity in L distance   ∆tp [K] - difference between inlet air temperature and room air temperature   ∆tL [K] - difference between room air temperature and the air temperature in flow axis in L distance   Eef [m2] - effective grille area   y [m] - air flow axis deflection   α [ o ] - grille blade adjustment angle   γ [ o ] - air-flow opening angle

Effective velocity wef [m.s-1] = V [m3.h-1] / 3600 . Sef [m2]

Acoustic powers and pressure losses
1. SVM P 20 with R1 regulation
2. SVM P 12,5 with R1 regulation
3. SVM N with R1 regulation
	The same values as for 100% regulation opening apply to grilles without regulation.
4. Air-flow velocity and flow length in isothermal flow
5. Air-flow axis deflection
6. Maximum temperature difference ∆tp max in cooling
Provided the maximum temperature difference ∆tp-max (for given grille effective area Sef and effective velocity wef) is exceeded in cooling, air flow does not adhere to the ceiling.

Example

Given data:
Grille SVM NV 500 x 280 with R1 regulation (75%-regulation opening, blade adjustment angle α = 0°).
V = 1200 m³.h^-1
w_{L max} = 0,6 m.s^-1
∆t_p = 7 [K]

Table No. 2:
S_ef = 0,11 m²

Calculation:
w_ef = V / 3600 . S_ef = 1200 / 3600 . 0,11 = 3 m.s^-1

Diagram 3:
∆p_c = 13,5 Pa
L_WA = 28 dB(A)

Diagram 4:
L = 8 m

Diagram 5 :
y = 2,55 m

III. ORDERING DATA

GRILLE SVM NS - 500 x 280 / - / - TPM 016/01

IV. MATERIAL

The components of grilles are made of drawn aluminium sections. Section surfaces are eloxal coated. Fixing frames are made of galvanized sheet. The sealing along the grille perimeter is made of plastic foam self-adhesive tape.

V. PACKING, TRANSPORT, ACCEPTANCE, STORAGE

Grilles are packed separately in cardboard boxes wrapped in shrinking foil. Transport is made by covered transportation means. As agreed upon with the manufacturer, grilles may be transported on pallets. When handled during transport and storage, grilles must be protected against mechanical damage.

Unless the acceptance procedure is defined in the order, the disposition of grilles to the carrier will be considered the acceptance of grilles by the customer.

Grilles must be stored in closed premises, in environment free from aggressive vapours, gases and dust.

The manufacturer grants an 18-month guarantee for grilles after the date of operation start, however maximum 24 months after the date of dispatching.

VI. RELATED STANDARDS, REGULATIONS AND PROTOCOLS

ČSN 12 0000 . . . . . . . . . . . . . Air-conditioning equipment. Terms.
ČSN 33 2000-5-54 . . . . . . . . Grounding and electrical conductors.
ČSN EN 60 721-3-3 . . . . . . . .Environmental condition classification.
ČSN 33 2030 . . . . . . . . . . . . . Protection against dangerous effects of static electricity.
ČÚBP Reg. No. 48/82 Coll.. . Basic requirements for safety at work and of technical equipment.
ČÚBP Reg. No.324/90 Coll.. Safety at work and of technical equipment at building works.