View source for Installation Instructions for the Mech HIU

==Introduction==
<big>'''Thermal Integration MECH'''</big>

'''Assembly instructions &amp; user manual.'''

Please retain this document with the HIU.

'''APPLICATION:''' The Thermal Integration MECH HIU is designed for use as a Heat Interface Unit (HIU) connected to a communal heat distribution system and is suitable for provision of both heating and hot water. It can be fitted with an MID approved Class 2 heat meter to enable energy monitoring.
In order for the MECH HIU to serve the heating circuit and achieve virtually instantaneous hot water delivery, the communal heat distribution system should be up to temperature and pumped at all times. A pressure operated bypass should be fitted to the system to allow a small amount of flow when all units are shutdown, as this helps maintain heat in the pipework ready for any demand.

The MECH HIU uses a gas filled mechanical control valve to accurately regulate DHW. Central heating is provided directly, with a Differential Pressure Control Valve fitted on the CH feed. DHW temperature can be adjusted by the resident without removing the HIU casing or breaking any of the security seals.

The unit comes in an attractive EPP casing, with overall dimensions of only 585mm W x 485mm H x 265mm D, and remarkably low heat losses &lt; 20W.

'''LOCATION:'''
The HIU should be installed with the following provisions:

* HIU should be installed in a frost-free area
* HIU should not be exposed to direct sunlight.
* Ambient temperature: 5C to 40C
* Humidity range: 10% - 85%
'''INSTALLATION:'''

* The unit must only be installed, commissioned and maintained by a qualified engineer.
* Installations must take into account all current and relevant Building Regulations, safety requirements for heating installations, and general requirements for drinking water.
* The unit is solely for an unvented heating system and a maximum temperature of 95ºC.
'''CAUTION!'''

* The unit, pipes and radiators can contain water up to 95°C and at high pressure.
* Contact with components or hot water can cause burns.
'''ELECTRICAL COMPONENTS:'''

* The Thermal Integration MECH HIU does not contain any electrical controls as it is mechanically controlled. However the heat meter may be mains powered (depending on the model) and may not be waterproof so it should always be kept dry.   
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'''OPERATION:'''

* The differential pressure controller maintains constant differential pressure across your heating system. This pressure differential facilitates heat flow from the distribution network through your heating system. The heating system controls provided in the home, determine the temperature in each room.
* The MECH HIU is equipped with a plate heat exchanger which uses the heat supplied from the distribution network to provide hot water.
'''INSPECTION and MAINTENANCE:'''

For proper operation of the device a periodic maintenance inspection must be carried out. Maintenance and repairs should be only be done by a qualified engineer.

'''CAUTION!'''

* Ensure the unit’s power supply is isolated.
* Ensure the valves from the district heating supply flow and return are closed
* Check valves and filter for dirt and contamination.
* The casing can be cleaned with a damp cloth. Do not use solvents such as benzene, alcohol, etc.

'''GOING ON HOLIDAY?'''
Do not disconnect the unit from the power supply. The HIU is designed that with no heating or hot water demand, there is virtually no heat and very little electricity used. Turning off the device during prolonged periods of absence is therefore not necessary. Simply set the room thermostat to approximately 12°C before you leave for the duration of your absence.

Contact Thermal Integration for more advice and information on prolonged absence.

==Technical Specification==
{{:Table: MECH}}

==Overview of Components and Connections==
{{IMG|Eco_Mech_Key.png|600}} 

#Primary flow temperature sensor
#Primary circuit strainer
#Domestic hot water temperature control
#Case security fixing
#Plate heat exchanger (DHW Only)
#EPP Casing
#Heat meter screen (Where fitted)
#Domestic hot water temperature sensor
#Differential pressure control valve
#Heat meter body (Where fitted)

{{IMG|MECH_Scope_Of_Delivery.jpg|620}}

{{IMG|MECH_Tools.jpg|620}}

{{IMG|MECH_Dimensions.jpg|620}}

==Dismantling and Assembly==
{{IMG|MECH_Dismantle.jpg|600}}
{{IMG|MECH_Dismantle2.jpg|600}}

==Commissioning==
{{IMG|MECH_Commissioning.jpg|600}}
{{IMG|MECH_Commissioning_DPCV.jpg|600}}
{{IMG|MECH_DHW_Valve_Setting.jpg|600}}

==Fitting Insulation Cover==
{{IMG|MECH_Insulation_Cover.jpg|600}}

==Basic Troubleshooting==
{{:Table: MECH Basic Troubleshooting}}

==Advanced Troubleshooting==
{{:Table: MECH Advanced Troubleshooting}}

==General Plumbing Requirements==
{{:General Plumbing Requirements}}

==Guarantees and After Sales Backup for HIUs==
{{:Guarantees and After Sales Backup for HIUs}}

==Country of Origin==
This equipment is manufactured in the Netherlands by HSF B.V. and is supplied to Thermal Integration Ltd. In the UK. For all enquiries contact Thermal Integration Ltd. Tel: 08452 411 441


==Warranty Returns Form==
{{:Warranty Returns Form}}