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
mm
Width
mm
Height
mm
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: [phone]
Fax: [phone]
Email: [e-mail]
Web: www.hydor.co.uk
idealair group
Unit 1, Building 1, Sydney Corporate Park,
85 O’Riodan Street, Alexandria NSW 2015
Tel: [phone]
Fax: [phone]
Email: [e-mail]
AMS
11 Ingrid Road, Montague Gardens,
7442 Cape Town, Western Cape
Tel: [phone]
Fax: [phone]