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ComfortZone RX35 - User Manual

ComfortZone RX35
66 pages
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User and
Installation Manual
RX35 - RX50 - RX65
2020-10-30
From SW 2.0 CZ06525 Ver J

Table of Contents

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Summary

Preface

Panel and control unit

Settings during operation

Display

Explains the display behaviour and interaction.

Extra Hot Water

Details the function for temporarily increased hot water need.

Temperature;Time

Lists settings accessible via the Temperature/Time icon.

Setting temperature control

Explains different control methods for indoor temperature.

Control method OUT & IN (Factory Setting)

Details the factory default control method for indoor temperature.

Control method OUT

Explains heating control based solely on outdoor temperature.

Control method IN

Explains heating control based solely on indoor temperature.

Indoor Temperature with double heat curves

Describes controlling two heating zones with different heat curves.

Restriction of electrical elements

Explains how to limit electrical element usage based on indoor temp.

Hot water temperature

How to set the desired temperature for the hot water tank.

Restriction of hot water temperature

Describes the mixing valve for limiting outgoing hot water temperature.

Hot water priority

Explains how to prioritize hot water production over heating.

Min return temperature; Min inlet temperature

Maintains basic heat level in circulation system even when no heating is required.

Holiday settings

Lowers indoor temperature during absence and warms up before return.

Diode list

Allows adjustment of the brightness or turning off the green diode list.

Fan control and timer

Explains setting fan speed and using timer functions for weekdays/weekends.

Smart control

Reduces energy used for HW production by lowering tank temp during low consumption.

Summer mode

Avoids unnecessary heating at night during periods of hot days/cool nights.

Synchronization with solar panels

Allows synchronization with solar panels for heating optimization.

Maintenance

Main fuse

Describes the main fuse and its location as a main switch.

Replacement of air filter

Details how to check, clean, or change the air filter.

Filter alarm reset

Explains how to reset the filter change alarm on the display.

Checking the system pressure

Describes how to check and maintain the system pressure (High/Low models).

Expansion vessel

Specifies the required pre-pressure for the expansion vessel.

Electronic galvanic anode

Explains how to check the function of the electronic galvanic anode.

Component List

Installation

Transport and handling

Provides guidelines for transporting and handling the heat pump.

Placement

Details recommended placement criteria for the heat pump.

Dimensions and outlet of ventilation connection

Specifies dimensions for ventilation connections and tube sizes.

Dimensions and position of pipe connection RX35; 50;65 High model

Shows dimensions and layout for pipe connections on the High model.

Dimensions and position of pipe connection RX35; 50;65 - Low model

Shows dimensions and layout for pipe connections on the Low model.

Pipe connections

Guidelines for connecting pipes to avoid noise and ensure system integrity.

Radiator system

Specifies requirements for radiator system dimensioning.

Floor Heating System

Notes on circulation pump capacity for floor heating systems.

Radiator and floor heating system

Explains connection methods for mixed radiator/floor heating systems.

Connection without supply air unit (standard connection)

Instructions for standard connection when no supply air unit is used.

Connection with supply air units

Details connection of ComfortZone's air supply unit T12.

Minimum circulation flow

Specifies minimum required circulation water flow rates for different models.

Connection of extra hot water tank - High model

Describes connecting an external hot water tank to the High model.

Connection of hot water tank - Low model

Details connecting an external hot water tank to the Low model.

Ventilation connection

Silencing

Recommends using duct silencers for achieving lowest noise level.

Adjustment of ventilation

Explains how to set fan power and airflow for optimal ventilation.

Electrical connection

Power supply 1 x230 V

Instructions for connecting a 230V single-phase power supply.

Connection option 3 x400 V

Details the connection procedure for a 3x400V three-phase power supply.

Accessories; Additional equipment

Indoor temperature sensor; external room sensor

Describes connecting an external sensor for indoor temperature measurement.

Connection of outdoor sensor

Details how to connect an outdoor sensor for temperature monitoring.

Connection of accessories

Explains connections for fan control, fireplace switch, and other accessories.

External alarm output (relay)

Describes how to connect an external alarm signal via a relay.

Accessories; Spare Parts

Lists available accessories and spare parts like sensors and filters.

Commissioning

Re-filling the system

Step-by-step guide for filling the system with water and checking pressure.

Venting the system

Procedures for bleeding air from radiators, floor coils, and the heat pump.

Venting of hot water tank

Explains the automatic drainage of the hot water tank system.

Draining; emptying the system

Instructions for safely draining the hot water tank and the entire system.

Emptying the heating circuit

Guide on how to empty the heating circuit for maintenance or winterization.

Adjusting the system

Adjustment of shunt groups

How to balance heat distribution between different shunt groups.

Adjustment of floor loops

Steps to adjust flow to individual loops in a floor heating system.

Adjustment of radiators

Method for adjusting flow to individual radiators for balanced heating.

Settings during installation

Basic Settings

Overview of essential parameters set during initial installation.

Choice of regulation

Selecting the primary control method (OUT, IN, OUT&IN).

Blocking of interfering resonances

Function to minimize resonance sounds from the frequency-controlled compressor.

Maximum frequency of the compressor

Adjusting compressor frequency based on airflow for noise reduction.

Legionella elimination

Automatic function to raise water temperature weekly to prevent legionella.

Operation with heat elements only

Option to run the heat pump using only auxiliary electric elements.

Operation with fan off

Allows running the heat pump like an electric boiler without fan operation.

Start-up and installation control

Emphasizes the need for a completed installation inspection protocol.

Adjustable HW overheating limit

Setting a limit to prevent hot water overheating from external sources.

Double Heat Curves

Enables control of two heating zones with separate heat curves.

External mixing valve control

Control of an external mixing valve for systems with external heat sources.

Synchronization with solar panels

Function to synchronize solar panel operation with the heat pump.

Troubleshooting

No heat to the elements (circulation water) although the compressor is running

Discusses causes and measures for lack of heat in circulation water.

The heat pump heats up the HW tank and then stops

Explains normal operation when the heat pump heats the hot water tank.

Overheated auxiliary heater - smell of burnt rubber

Addresses issues related to air in the auxiliary heater causing odors.

Poor hot water capacity

Identifies low values for hot water temperature and priority as causes.

The heat pump completely shuts down and does not start

Troubleshooting steps for power failure or fuse issues causing shutdown.

Overheating protection cannot be restored

Addresses scenarios where the overheat alarm cannot be reset.

Alarms

Filter Change Alarm

Indicates when the air filter needs to be changed or cleaned.

High Gas Pressure Alarm

Describes high pressure conditions tripping the high-pressure switch.

Low pressure alarm 1

Deals with low evaporation temperature, often due to low airflow.

Low pressure alarm 2

Addresses low evaporation pressure, potentially caused by refrigerant loss.

Inverter alarm (0)

Troubleshooting for errors detected by the inverter.

Heater overheat alarm

Indicates activation of the overheat protection for the auxiliary heater.

Hot water overheat alarm

Addresses issues with the gear valve sticking or control faults.

Sensor fault TE0-TE2

Describes sensor resistance issues or connection problems.

Defrost alarm

Alarm indicating defrosting completion time exceeded or sensor error.

Unknown HP box alarm

Alarm when the controller cannot identify the VP box.

Heating overheat alarm

Triggered by exceeding maximum supply temperature, often due to poor circulation.

Heating limitation alarm

Activates when temperature limitation completely switches off the compressor.

Heating return max alarm

Indicates excessive temperature of the return sensor.

SD memory card error

Problems related to the SD memory card, such as missing or faulty.

Inverter connection failure

Troubleshooting for incorrect inverter parameter settings.

Pressure ratio alarm

Alarm due to high pressure ratio, potentially from excessive flow temperature.

Hot gas temperature alarm

Indicates excessively high hot gas temperature, possibly due to refrigerant issues.

Alarm - Multiple alarms simultaneously

Addresses issues where multiple alarms occur concurrently.

EEV min pos time out alarm

Alarm when the EEV stays at minimum position for too long.

EEV Max pos timeout alarm

Alarm when the EEV stays at maximum position for too long.

Clock not set alarm

Indicates issues with the clock setting or battery.

Condenser temperature alarm

Alarm triggered by condenser outlet temperature exceeding a limit.

Room under heat alarm

Alarm when room temperature drops below a threshold for a duration.

Room overheat alarm

Alarm when room temperature exceeds a threshold for a duration.

Defrost error alarm

Alarm if defrosting cycle is not completed within the specified time.

Heating minimum alarm

Alarm if flow temperature is too low during heating operation.

Heating freez.danger alarm

Alarm indicating dangerously low return temperature to prevent freezing.

Invalid controller type;version

Alarm indicating incompatibility between control card and display software.

PL1 input alarm

Alarm related to incorrect connection or sensor input on PL1.

Sensor mismatch error

Indicates unreasonable sensor readings, possibly due to sensor error or connection.

No compressor function error

Alarm when the compressor is not functioning, using auxiliary heater instead.

Pump Diagram

Fan Chart

System overview RX35; RX50; RX65

Wiring RX35;RX50;RX65

Connection terminals and fuses

Connection to auxiliary heater X9

Details the wiring connections for the auxiliary heater.

Components

CE declaration

Energy declaration

Technical data

Installation protocol

ComfortZone RX35 Specifications

General IconGeneral
BrandComfortZone
ModelRX35
CategoryHeat Pump
LanguageEnglish

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