Calorex DH75/DH110 Range Installation Instructions

HEALTH & SAFETY WARNING

As the Heat Pump contains electrical and rotational equipment, it is recommended that ONLY competent persons carry out any work on this type of machine (see guarantee). Isolate electrically before entering machine or removing panels.

This appliance 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 appliance by a person responsible for their safety.

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

ISOLATE ELECTRICALLY BEFORE ENTERING MACHINE OR REMOVING PANELS.

Installation Model DH75/110

The Calorex TTW units are designed for installation in a heated room, adjacent to the poolroom.

1. Remove machine from packaging and set on a level surface. Check that machine is level both vertically and horizontally.
2. Remove covers as shown in FIG. 1 relative to machine type installed.
3. The Electrical supply to unit must be sized according to the data on the serial number label, paying close attention to I.E.E regulations latest edition regarding the special conditions governing electrical supply to machines in potentially damp areas (DH75/110 are IP45).
4. The electrical supply should be connected to the terminals on the Printed Circuit Board in the electrical box found in the top corner of the machine, see Fig 1 & Fig 4. Wires to be connected as follows: brown/red to live, blue/black - to neutral, and green/yellow to earth. The fan mode switch can be set to cycle fan when Hygrostat senses demand but should be set to continuous to promote good air circulation and reduce condensation.

Note that on models fitted with LPHW and or remote hygrostat the fans will start automatically whenever there is an air heating or dehumidification demand. During defrost the fans will stop. (Fan cycle not recommended for TTW machines with humidistat only). Set Fan Speed switch to "High" for maximum duty, "Low" for minimum sound.

5. Locate drain, 15mm compression fitting, on side of unit and run it away to waste as preferred. A single hole is provided in the side of the unit. The drain is factory fitted to this hole. (In TTW machines there is an alternate position - see drawings).

Models with LPHW fitted

1. Connect water circuit piping to the 22mm stubs provided on the side of the machine as per diagram.
2. It is recommended that isolation valves are fitted to enable isolation of the machine in the event of service. The Circulating Pump must be sized to take into account the design flow rate of the machine plus the water system resistance. (Flow Rate 9.6 l/min Pressure Drop 2.8 m/hd).

Figure 1: Panel Removal and Connections

This diagram illustrates the process of accessing internal components. It shows a standard machine where a panel is removed (secured by 4 screws) and a grille is removed from the outer cover (secured by 3 screws). It indicates the location of mains input terminals on the printed circuit board.

Diagram shows [air flow] arrows.

Figure 2: LPHW Schematic

This diagram shows the Low Pressure Hot Water (LPHW) connections for the machine. It indicates 'Port A to LPHW fin block' and 'Port B LPHW out'. It also shows 'LPHW out' and 'LPHW in' ports, and a 'Condensate drain' connection.

Figure 3: LPHW Schematic Details

This detailed schematic illustrates the LPHW system components. It includes a Boiler, Pump, Flow meter, optional Radiator, Flow balance valve, and a 3-way motorised valve (Diverting). It shows LPHW connections located within the cabinet, detailing the water flow path through the system.

Figure 4: Remote Control Wiring Diagram

This diagram shows the wiring connections for remote 12V air thermostat, optional hygrostat, and remote on/off switch to the printed circuit board. It depicts a fused mains electrical supply (L1, L2, L3, N, E) and terminals for 'REMOTE THERMOSTAT', 'REMOTE HUMIDISTAT', and 'REMOTE ON/OFF SWITCH'. It also shows a 'Zero volt LPHW boiler demand signal'. Links are indicated to be removed when remote switches or humidistats are fitted.

Connections for Remote Controls

For models fitted with a Remote Hygrostat or combined stat, ensure the internal humidistat dial is set to minimum 20% (fully anti-clockwise). Connect the remote Hygrostat to the terminals on the Printed Circuit Board as shown in Fig 4.

Operation and User Checklist

Operation

A normal hygrostat setting (50-60%) is marked on the console. Minimum air temperature is 5°C.

Note: The fan stops during defrost.

The fan will start automatically, as required, on machines fitted with LPHW and/or remote Hygrostat.

Operating

• Ensure air inlets/outlets and filters are kept clear and clean.
• Wipe clean with a damp cloth or cleaning fluid suitable for painted surfaces.
• Note: The Reply Paid Warranty Registration Card must be returned to ensure the correct warranty is given. If you do not find a Registration Card with your machine, please contact Calorex Service Department giving your name, address, and serial number of your machine; a card will then be sent to you.

Filter Cleaning

The filter can be washed in warm, soapy water, rinsed, and shaken dry before replacement. Frequency of cleaning depends on usage, although no more than two months should elapse between cleaning. The dehumidifier must not be run without a filter fitted.

Troubleshooting

Machine not running at all.

Check the following:

• Is supply switched on?
• Is supply fuse healthy?
• Turn Hygrostat knob fully anti-clockwise.
• Check air inlet and outlet for obstructions and that the filter is not blocked.
• Check that HP and LP switches are reset.
• If, after carrying out the above and waiting 30 minutes, the machine does not start, telephone for service.

Machine fan only running (No LPHW demand)?

• Turn Hygrostat knob fully anti-clockwise.
• Check air inlet and outlet for obstructions and that the filter is not blocked.
• Check that HP and LP switches are reset. If after 30 minutes the machine has not restarted, telephone for service.

Water leaking from the base of the unit

1. Check connection from machine to drain for blockages and clear accordingly. Check fall is adequate.
2. Check that machine is level both vertically and horizontally.

The user check list should be carried out before initiating a service call. Do not attempt to interfere with any internal control settings as these have been factory calibrated and sealed.

Machine Dimensions and Service Requirements

Standard Machine with Cover Dimensions

Width: 1520 mm, Depth: 385 mm, Height: 796 mm.

Connection port locations (from bottom): Drain 69 mm, LPHW In (22 DIA) 402 mm, LPHW Out (22 DIA) 502 mm, Mains In (PG16) 675 mm.

Diagram shows [air flow] arrows.

Through The Wall Model Dimensions

Width: 1474 mm, Depth: 350 mm, Height: 1167 mm.

Diagram shows [air flow] arrows.

Diagram indicates 'AIR SAMPLE TUBES DO NOT OBSTRUCT'.

Service Requirements

*Dimensions marked thus are recommended for service access.

For standard machine with cover, recommended clearance is 1500 mm to prevent recirculation.

For through the wall model, recommended clearance is 800 mm to prevent recirculation.

Machine and duct must be sealed to wall & all cavities bridged to prevent recirculation.

Diagram shows [air flow] arrows.

Technical Data

Contact Information

Dantherm Ltd.

Unit 12, Galliford Road

Maldon CM9 4XD

United Kingdom

+44 (0)1621 856611

sales.uk@dantherm.com

Calorex is part of the DANTHERMGROUP.

Document reference: SD405450 issue 15