Carel VSDU0A0003 User manual

USER MANUAL

VSDU0A0003

Steam blower

ENG

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ENG

Index

1. INTRODUCTION 7

1.1 Description 7

2. PREPARING FOR ASSEMBLY 10

2.1 Requirements 10

3. ASSEMBLY 12

3.1 Preliminary operations 12

3.2 Assembly 12

4. MAINTENANCE AND SPARE PARTS 15

4.1 Components 15

4.2 Component replacement 15

5. TECHNICAL SPECIFICATIONS 17

VSDU0A0003 +030222190 rel. 1.4 – 11.02.2021 |5

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1. Introduction

1.1

Description

The blower for CAREL heaterSteam, humiSteam isothermal humidifiers distributes steam directly into

rooms in structures that do not feature an air distribution system. The appliance can be installed on top of

the humidifier or wall-mounted (using accessory kit P/N VSREM0003).

1.1.1 Models

P/N Power supply Maximum steam flow-rate (kg/h)

VSDU0A0003 24 Vac (supplied by humidifier) 18

Tab.1.a

1.1.2 Material supplied

Description Qty

Steam hose (L = 300 mm, ID = 30 mm/1.18 in) 1

Condensate hose (L = 220 mm, ID = 9 mm/0.35 in) 1

Metal clamp for steam hose 2

Diameter adapter for 1.5-3 kg/h cylinders (ID from 22 to 30 mm/0.86 to 1.18 in) 1

Self-tapping screw for fixing to the humidifier cover 4

Tab.1.b

1.1.3 Accessories

P/N Description

VSDREM0003 Wall-mounting kit (screws, anchors, 2 brackets, cable gland, steam hose

fitting, base)

1312368AXX Condensate hose (ID = 9 mm/0.35 in)

1312365AXX Steam hose (ID = 30 mm/1.18 in)

1312367AXX Steam hose (ID = 40 mm/1.57 in)

Tab.1.c

1.1.4 Receiving/identification

After having received the appliance, check that the box is not damaged and all of the components have

been delivered. Verify on the identification rating plate that the model is suitable for the required

installation.

Note: immediately report any damage to the carrier.

Store the appliance in a protected area in the conditions specified in the technical data table.

The appliance can be identified via the rating plate on the rear, which shows the part number, model,

serial number and other information.

Fig.1.a

ENG

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1.1.5 Dimensions - mm (in)

Fig.1.b

1.1.6 Structure

Fig.1.c

Ref. Description

1 Steam outlet

2 Air outlet

3 Light

4 Fans

5 Thermostat (Klixon)

Ref. Description

6 Terminal block

7 Fuse holder

8 Condensate outlet fitting (Ø 9 mm - 0.35 in)

9 Steam hose fitting (Ø 30 mm - 1.18 in)

1.1.7 Operating principle

The blower is connected to the power terminals provided inside the humidifier and is powered even

when the humidifier is off. When steam enters the blower, after a certain time either the thermostat

detects a temperature of 50°C or the output (terminal J19) on the c.pHC controller gives the signal and

the fans are activated. The air, taken in from the rear, is mixed with steam before being delivered into the

room, where it is easily absorbed. The blower features two different types of operating logic:

1. independent of the humidifier;

2. managed directly by the humidifier (c.pHC). The controller delays blower activation for a set time.

Deactivation can also be delayed to allow the blower to dry.

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1.1.8 Wiring diagram

Fig.1.d

Key

FU Fuse

T Thermostat (Klixon)

FANS Fans

L Light

Removing the jumper

Notes:

lif the humidifier is not fitted with the c.pHC controller, remove the jumper. The blower will be

activated by the built-in thermostat;

lfor the list of humidifiers where the jumper must be removed, see the following table.

Unscrew the screws to remove the jumper P.

Fig.1.e

The blower leaves the factory with the jumper inserted (= blower managed by the c.pHC controller on

the humidifier).

HUMIDIFIERS ON WHICH THE JUMPER MUST BE REMOVED

Part number Humidifier model

UR*******1/2 UR up to revision 2

UE*******1 UE up to revision 1

UG*******1/2/3 UG up to revision 3

ENG

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ENG

2. Preparing for assembly

The blower can be mounted on top of the humidifier or on the wall and connected to the humidifier via

the steam hose.

The maximum length of the steam hose is 4 m.

Note: observe the minimum distances shown in the following figures to prevent the flow of

humidified air from coming into contact with people, electrical equipment, false-ceilings and cold

surfaces before the steam is totally absorbed by the atmosphere.

Fig.2.a

Mounting (all dimensions in m[ft])

Ref. On top of the humidifier Wall

A >3[9.8] >3[9.8]

B >1[3.3] >1[3.3]

C ca. 2.1[6.8] ca. 2.1[6.8]

D >0.5[1.6] >0.5[1.6]

E - ≤4[13.1]

Tab.2.a

Notes:

ldimension C can be lower if it is not possible to transit in front of the blower unit;

lsee the humidifier manual for details on positioning.

2.1

Requirements

2.1.1 Steam hose

Follow these instructions when installing the steam hose:

lonly use hoses supplied by CAREL; hoses made from other materials may adversely affect operation of

the system;

lthe steam hose must be secured by supports (clamps, brackets) so that it does not bend and does not

weigh on the humidifier. A hot hose is more likely to bend;

lthe minimum radius of curvature of the steam hose is 5 times the inside diameter;

lthe steam hose must have a minimum slope in order to drain condensate back to the humidifier; in

any case, always install a condensate drain at the lowest point on the steam hose;

lminimise the length of the steam hose so as to reduce heat loss. Avoid the formation of pockets or

traps where condensate may accumulate;

lchoking (due to bends or twisting of the hose) can cause excessive back-pressure in the humidifier

cylinder when the unit is operating and consequently sudden steam outlet.

10|2. Preparing for assembly VSDU0A0003 +030222190 rel. 1.4 – 11.02.2021

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Important:

ldo not install a stop valve in the steam hose;

lwhen installation is complete, flush the steam line to remove any contaminants and processing

residues.

lexposure of the skin to a jet of hot steam may cause severe burns;

ldo not over-tighten the hose clamps (max. torque=180 N·cm).

2.1.2 Condensate hose

Follow these instructions when installing the condensate hose:

lthe condensate hose may be filled with hot water or steam: contact with the skin can cause serious

burns;

lconnect the hose to a drain in accordance with national and local regulations in force;

lthe condensate hose must have a minimum downward slope and must flow into a 200 mm high drain

trap: the drain trap must be at least 300 mm below the connection to the blower. Alternatively, the

condensate hose can be connected to the condensate drain tank located at the top of the humidifier;

lcondensate drains must be installed at all the lowest points and wherever the drain line goes from

horizontal to vertical. The drain line must be connected to a “T” connector and have a minimum

downward slope. The drain trap must be at least 300 mm below the connection.

lmake sure that the condensate drain lines are not blocked;

ldo not over-tighten the clamps on the condensate hose.

Important: before starting the humidifier, fill the drain traps with water.

Fig.2.b

ENG

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ENG

3. Assembly

3.1

Preliminary

operations

3.1.1 Removing the cover

For steam blower installation or maintenance, remove the cover from the appliance as described below:

1. Disconnect the blower from the power supply;

2. Unscrew the two fixing screws placed on the top of the cover;

3. Pull the cover up by slightly turning it forward to release it.

Fig.3.a

3.2

Assembly

3.2.1 Mounting on top of the humidifier

Important: install the humidifier in a horizontal position using a spirit level.

Procedure:

1. Remove the cover from the blower and the front and top of the humidifier;

2. Remove the caps (1) and (2) on the humidifier top panel;

3. Cut the steam hose (3) supplied to the right length and connect it to the fitting (4). To secure it,

tighten the metal clamps (5) using a screwdriver;

4. Insert the condensate drain hose (6) to the fittings on the blower and the humidifier panel. To secure

it, tighten the metal clamps (7);

5. Connect the two-wire cable (≥1mm2, Lmax = 4 m) from the humidifier to the blower. The terminals

(9) are located in the humidifier electrical panel;

6. Make the electrical connections as specified in "Wiring diagram".

7. Mount the blower on the humidifier;

8. Insert the fixing screws (10);

9. Place the cover back on the blower.

12|3. Assembly VSDU0A0003 +030222190 rel. 1.4 – 11.02.2021

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Fig.3.b

3.2.2 Wall-mounting

Important: mount the blower only on masonry walls.

Mounting the support and dimensions (mm)

Procedure:

A. connect elements A and B to form the L-shaped bracket, as shown in the figure;

B. fasten the bolts and nuts;

C. connect the two brackets with the crossbar.

Secure the supporting structure to the wall using anchors through the two slots. Use a spirit level to

check that the support is horizontal.

Fig.3.c

ENG

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ENG

Fixing the blower to the support

Procedure:

Fig.3.d Fig.3.e

1. Remove the knock-outs

2. Insert the L-shaped brackets into the

holes and place the blower on the

support. Secure it using the screws

Fig.3.f

Fig.3.g

3. cut the insulating panel (C) to remove

the screws from the steam hose fitting

4. Replace the curved fitting (A) with

the straight fitting (B)

Fig.3.h

Fig.3.i

5. Slide the support S fully in 6. Tighten the fixing screws to the

threaded inserts. Fit the cable gland P.

Install the steam hose, the condensate hose and the power cable following the steps described in the

previous paragraph and the notes in chap. "Preparing for assembly".

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