The DIGI Camper
Introduction
The Camper is so named because it was originally designed for fitting external to holiday homes on a campsite.
The unit is designed for situations where there is little or no room in the property for the heat interface unit, so it must be placed outside. It therefore comes complete with a casing specifically designed and insulated to cope with the most extreme weather conditions.
The casing is manufactured in fibreglass with a gel-coat finish that can be coloured to match the properties on site, and each case is equipped with two lockable compartments. The upper compartment houses the Heat Interface Unit, and the lower compartment houses the service valves, and spaces the unit off the ground to avoid any risk from flooding.
Internally the unit is essentially a 'DIGI' HIU utilising a plate heat exchanger for hydraulic separation of the district heating network and the heating system within the property, with another plate heat exchanger used for generation of domestic hot water.
With the exception of the expansion vessel and filling loop for the central heating, the unit provides all the controls required.
Installation Instructions
DIGI Installation Instructions
Component Instructions
The Camper unit may be fitted with either a Double Regulating Valve, or a Pressure Independent Control valve and actuator (see Items 3, 20 and 21 in the 'Components' section below) . Both valves can be adjusted to regulate the flow rate to the heating circuit following the instructions below.
Some HIU's may also be fitted with an AB-QM Bypass valve (Item 8), this allows a small flow from the primary system to flow up to the HIU without entering the HIU or affecting the energy consumption. This valve is simply to maintain flow on the primary system and to speed up the HIU's response to a hot water demand. 
Double Regulating Valve Instructions 
HIU's may also be fitted with a landlord security solenoid valve (Item 9), to enable remote isolation of the unit. This valve is powered open, and therefore when power to the HIU is isolated it will close and stop district heating flow into the unit.
Each HIU is fitted with an Energy Meter / Heat Meter, which measures the amount of energy / heat consumed by the unit by metering the primary system flow rate, and its respective flow and return temperatures. This enables the site manager to obtain an energy reading which can be used for billing individual users.
The DIGI Camper HIU is fitted with a Kamstrup Multi-Cal 402 heat meter.
Kamstrup Multical 402 User Guide
Key Features
- Colour coordinated fibreglass casing, with lockable hinged doors
- 30mm Expanded Polypropylene (EPP) insulated secondary case
- Stepper motor control valves as standard
- Option for pressure independent high flow control valves
- Built-in pump
- Allowance for any industry standard heat meter
- Standardised, documented, controls layouts
- Isolation of central heating circuit from heat network
- Provision for flooding to a depth of 600mm
- Primary system bypass to allow flow up to the unit at all times (External to the meter circuit)
- DN25 Copper Pipework
- Safety relief valve
- Drain cocks on both primary and secondary circuits
- Isolation valves
- Dimensions 1405 x 800 x 400mm
Options
- Heat meter fitted within casing
- Expansion vessel within casing
- Filling Loop and pressure gauge within casing
Connections
Components
