Hydor HHWCH51 User manual

HHWCH51 Inst Issue 3: 18.06.15

Installation and Maintenance Instructions.

THESE INSTRUCTIONS MUST BE READ FULLY BEFORE COMMENCING INSTALLATION.

Owner / installer: The life of this apparatus and its eciency will be increased if

its use and maintenance is carried out in accordance with these instructions and

current statutory requirements. The installation and initial adjustments should be

carried out by a qualiﬁed and competent technician. Hydor Limited should be

consulted before substituting or ﬁtting parts from another manufacturer. It is the

responsibility of the installer to verify that the installation is in accordance with

the following standards and the owner is given the current User’s Manual.

Any modiﬁcations to the unit or its installation, even the smallest

modiﬁcation, change or elimination of security components or pieces that

inﬂuence the eciency or loss of ventilation, will result in the CE Certiﬁcation

and Hydor’s warranty being cancelled.

1. General

1.1 These instructions cover only Hydor products and do not include the

supply or installation of any safety equipment that may be required, e.g.

proper electrical isolation.

1.2 Any declarations made by Hydor about product installation and safety, are

dependent on the unit being used within installations which themselves

meet the relevant Standards and Directives of your region.

1.3 The Unit is designed to operate in normal ambient temperature of up to

55°C and up to 90% RH. The unit is not suitable for corrosive or explosive

atmospheres.

1.4 The installer should consider future maintenance and ensure the unit is

easily accessed.

1.5 This product is not intended for use by persons (including children) with

reduced physical sensory or mental capabilities or lack of experience and

knowledge, unless they have been given supervision or instruction

concerning use of the product by a person responsible for their safety.

Children should be supervised to ensure that they do not play with the

product.

HHWCH51 Galvanised Hot Water Coil Heater

incorrect

correct, minimum height 5mm

HHWCH51 Inst Issue 3: 18.06.15

2. Description and Operation

2.1 Description of the HHWCH51 Unit:

Cast iron coil hot dipped galvanised steel ﬁns for highly ecient heat

transference. A Hydor high eciency 630mm diameter fan unit. An angled

mesh diuser matching the ceiling angle for uninterrupted air ﬂow within

the building.

2.2 Code of Practice:

The unit should be installed by suitably qualiﬁed and competent personnel

in accordance with all statutory regulations. It is important to connect the

electrical power supply and the water ﬂow and return correctly. It is the

responsibility of the installer to ensure that the installation is in accordance

with the following processes; the current user’s manual is given to the

customer on the completion of installation.

3. Location of HHWCH51 Units

3.1 The heater unit is delivered assembled and must be mounted horizontally

to ensure the most eective venting of the heater coil.

3.2 Before installing inspect the unit for any minor ﬁn damage to the heat

exchanger.

3.3 The ideal position for these units is equally spaced between ventilation

roof fans on the centre line of the building.

3.4 The unit is supplied with suspension/lifting eyes and these should be used

to suspend the unit from secure points in the ceiling. Provision should be

made to winch the units up and down, to ease cleaning and maintenance.

4. Installation

4.1 Connect the water, supply and return, ensuring the correct orientation. It is

advisable to use lengths of ﬂexible hose and shut-o valves for the ﬁnal

connections. Allow for lowering the units.

4.2 All threaded connections should be made using the approved method of

jointing, Boss white and hemp. The threads ﬁtted to the coil should be

supported at all times whilst making joints.

4.3 All external piping should be supported independently from the coil.

4.4 It is recommended that ﬂuid ﬁlters are ﬁtted.

4.5 Please consult your plumbing contractor in regards to pipe layout.

5. Electric Connections

5.1 Electrical installation must be carried out by suitably qualiﬁed and competent

personnel in accordance with all current statutory requirements.

5.2 All electrical connections must be of the correct size conductors and

earthed in accordance with local requirements.

5.3 Connect the fan motor to the controller using a screen cable [type SY

or CY] to reduce the eects of EMC generated by the inverter speed

HHWCH51 Inst Issue 3: 18.06.15

control. The screen should be earthed ensuring that the earth bonding is

continuous.

6. Technical Information

Performance and Electrical Data

Supply

Voltage

V-Ph-Hz

Heater

Area m²

Airﬂow

Max m³/s

Electrical

Power W

Heat

Output kW

FLC

Amps A

Start

Amps A

Speed

Max r/

min

230-1-50 0.84 4.74 390 51 2.7 7.6 900

Dimensions

Length

Width

Height

Weight

Empty kg

Weight

Operational kg

1400 740 900 195 220

7. Commissioning Preparation

7.1 Once the unit is installed and all joints are sealed, a nitrogen pressure test

should be carried out on the system to check for leaks. Following a

successful pressure test the coil may be ﬁlled. It is important that all air is

excluded from the coil and particular attention should be paid to the

venting system.

8. Commissioning

8.1 Start fans and pumps.

8.2 Measure, record and adjust the airﬂow to within 20% of the design.

Measure and record the air pressure drop across the heater battery.

8.3 Measure, record and adjust the water ﬂow to within 20% of the design.

Measure and record the water pressure drop.

8.4 Measure and record the air temperature into the coil. Measure and record

the air temperature leaving the coil. Note: Do not exceed maximum

working pressures or velocities.

9. Operation

9.1 There are three main functions of operation: - Destratiﬁcation; Low Heat

and High Heat. However, these can be selected to operate in various modes.

With the Manual Mode selected the following operations can be selected:

Destratiﬁcation: The fan will run continuously at the speed selected on

the Fan Speed dial and will be displayed on the inverter

screen [0 –50Hz], inside the panel. The Water Pump

and the Water Valve power is O. [Valve Closed].

HHWCH51 Inst Issue 3: 18.06.15

Low Heat: The fan will run at the speed selected on the Fan Speed

dial and will be displayed on the inverter screen

[0 – 50Hz] inside the panel. The Water Pump and the

Water Valve power is switched On. The Valve position is

selected on the Low Heat Setting dial [0 –10Vdc].

High Heat: The fan will run at full speed [50Hz displayed on the

inverter screen]. The Water Pump and the Water Valve

power is switched On. The Valve is fully open [10Vdc].

9.2 With the Auto Mode selected the following operations can be selected:

High Heat: The unit switches from Destratiﬁcation to High Heat to

Destratiﬁcation, as temperature rises and falls.

Low Heat: The unit switches from Destratiﬁcation to Low Heat to

Destratiﬁcation, as the temperature rises and falls.

High to Low: The unit switches from Low Heat to High Heat to Low

Heat, as temperature rises and falls.

10. Filter Cleaning

10.1 An optional function, to ensure the Filter Mesh does not clog, an

automatic ﬁlter cleaning mode can be built-in to the control system. Every

6 hours the fan switches to “cleaning mode”, reversing the fan which runs

at full speed for 15 seconds, blowing o any dust on the ﬁlter mesh.

Depending on environmental conditions it is highly recommended that

the coil is lowered to the ground for thorough cleaning during the growing

period.

11. Interlock

11.1 An optional function, if ﬁtted. In Auto mode, if the Interlock Switch is On, a

voltage signal [230Vac or 24Vac, determined when ordering] is received

from the main ventilation thermostat when cooling is required, will switch

o all the heating and destratiﬁcation functions. When the house is being

cooled by the main fans, any heat generated would be wasted, as it would

be drawn straight out of the building.

12. Indicator Lights

Lights are provided to indicate the state of the operation modes: - High

Heat; Low Heat; Destratiﬁcation and Cleaning.

An additional light will illuminate if the fan motor trips for any reason.

HHWCH51 Inst Issue 3: 18.06.15

13. Frost Protection

All coils should be protected from frost. This can be achieved by adding

inhibited antifreeze solution to the circulation water or heating the

environment around the coils. It is not always possible to fully drain water

out of a coil matrix when the tubes are horizontal. To minimise the

retained water and drain down the system for frost protection: -

13.1 Drain the water coil and blow out any remaining droplets of water with

compressed air.

13.2 Completely ﬁll the coil with inhibited antifreeze of appropriate

concentration for the minimum temperature that will occur.

13.3 The antifreeze solution can be drained and stored to repeat the procedure

at other times.

Note Uses of only inhibited antifreeze is important as uninhibited products

may cause formicary corrosion within the pipes.

14. Maintenance

14.1 Finned surfaces should be inspected regularly, and cleaned if necessary.

14.2 The coil should be inspected for any signs of corrosion.

14.3 Circulating ﬂuid should be kept free from impurities and corrosive

elements.

14.4 Vent air from the coil on a regular basis. Automatic air vents are

recommended.

14.5 Check all connections; ﬂuid and electrical and tighten if necessary.

HHWCH51 Inst Issue 3: 18.06.15

Notes

HHWCH51 Inst Issue 3: 18.06.15

Notes

HHWCH51 Inst Issue 3: 18.06.15

A member of

Guarantee

Hydor or its agents will, within a period of one year from the date of dispatch

from their works, at its option, replace any goods, which are proven to have

defects as a result of defective materials or workmanship. The goods must be

inspected by a Hydor ocial and if necessary returned, with a Returns Note

Number, carriage paid, for further examination.

Hydor Ltd

Hydor

Unit 8, Parkers Close, Downton Business Centre,

Downton, Salisbury, Wiltshire, SP5 3RB, UK

Tel: +44 (0) 1725 511422

Fax: +44 (0) 1725 512637

Email: info@hydor.co.uk

Web: www.hydor.co.uk

idealair group

Unit 1, Building 1, Sydney Corporate Park,

85 O’Riodan Street, Alexandria NSW 2015

Tel: +61 (02) 8073 3310

Fax: +61 (02) 8073 3320

Email: info@idealairgroup.com.au

AMS

11 Ingrid Road, Montague Gardens,

7442 Cape Town, Western Cape

Tel: +27 (0) 21 552 1077

Fax: +27 (0) 21 552 2797

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