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Please read th ese instructions carefully as th ey will
enable you to get maximum effi ciency and reliability
from your new Calorex Dehumidifi er.
Technical Manual
DH/TTW 75/110
(SD405452 Iss 15)
13/02/17
HEALTH AND SAFETY WARNING
As th e dehumidifi er embodies electrical and rotational equipment, ONLY
competent persons should carry out any work on th is type of machine (see
warranty).
CONTENTS
SECTION 1.0 INSTALLATION INSTRUCTIONS/ USER CHECK LIST. .....................................................2
SECTION 2.0 CONTROL LAYOUT & LPHW OPERATION. .......................................................................5
SECTION 3.0 MACHINE DIMENSIONS ......................................................................................................6
SECTION 4.0 DATA SHEET. ........................................................................................................................7
SECTION 5.0 WIRING DIAGRAMS .............................................................................................................8
SECTION 5.1 FEATURES OF THE PRINTED CIRCUIT BOARD .............................................................10
SECTION 6.0 REFRIGERATION CIRCUIT ...............................................................................................12
SECTION 7.0 PERFORMANCE GRAPHS ................................................................................................13
SECTION 8.0 SPARE PARTS LISTS ........................................................................................................14
SECTION 9.0 OPTIONAL ITEMS, REMOTE CONTROLS. ......................................................................23
SECTION 10.0 WARRANTY CONDITIONS ..............................................................................................25
SD405452 ISS 15
Page 1

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Summarization of Contents

Installation and User Guidance
Health and Safety Warnings
Crucial safety precautions for handling the dehumidifier, emphasizing qualified personnel and proper electrical isolation.
Model DH75/110 Installation
Step-by-step guide for installing the DH75/110 model, including setup on a level surface and electrical connections.
LPHW Models Installation
Specific installation instructions for models equipped with the LPHW option, including water circuit connections.
Controls and LPHW Operation
Control Layout
Description and identification of controls, lamps, and switches on the dehumidifier's main panel.
LPHW Operation
Explanation of how the 3-way motorised valve operates with LPHW systems and remote thermostats.
Wiring Diagrams
Printed Circuit Board Features
Details on the printed circuit board, including LED indicators and their functions for diagnostics.
Optional Remote Controls
Remote Hygrostat Installation
Instructions for connecting and installing a remote hygrostat for enhanced humidity control.
Remote Thermostat Installation
Guidance for fitting a remote thermostat to LPHW versions for temperature-based control.
Remote On/Off Control
Procedure for connecting a remote on/off switch or BMS system for external dehumidifier control.

Table of Contents