Puravent M.HP07-09 Monobloc Backup Electric Heater Owner’s Manual

: June 3, 2024
: puravent

Puravent M.HP07-09 Monobloc Backup Electric Heater

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ABOUT THE DOCUMENTATION

This document is prepared for authorised installers, read this document carefully before installation. keep this manual in a handy place for future reference.
Improper installation or attachment of equipment or accessories could result in electrical shock, short circuit, leaks, fire or other damage to the equipment.
All activities described in this manual shall be carried out by a licensed technician.
Be sure to wear adequate personal protection equipment(protection gloves, safety glasses) when performing installation, maintenance or service to the unit.
If unsure of installation procedure or use, always contact your dealer for advice and information.
The unit described here is designed for indoor installation.

ABOUT THE BOX

Backup heater

Structure of the backup heater
1）Remove the front cover of the backup heater.

Air purge
Backup heater
Water IN connection
Water OUT connection
Thermal protector
Circuit breaker
Terminal block
Terminal block
Terminal block
Backup heater contactor

PREPARATION

Preparing installation site

Installation site requirements of the backup heater

Keep in mind the guidelines for the measures:

Mind the following spacing installation guidelines:

The backup heater is designed to be wall mounted in indoor locations only.
Make sure the installation surface is a flat and vertical noncombustible wall.

Preparing water piping

When installing the backup heater in the system, make sure the required minimum water flow rate is guaranteed at all times. For more information, refer to the installation manual of the outdoor unit.

Preparing electrical wiring

Overview of electrical connections for external and internal actuators

NOTICE
More technical specifications of the different connections are indicated on the inside of the backup heater.

INSTALLATION

Opening the units

To open the backup heater

Mounting the backup heater

To install the backup heater

1Fix the wall bracket to the wall with M8 screws. Mark the position of the hole at the bottom of the backup heater.
Drill a hole for the bottom screw and insert a plug.
2Fix the wall bracket to the backup heater with M4 screws.
Hang the backup heater onto the wall bracket. Make sure it is fixed properly.
Fix the bottom of the backup heater to the wall with an M8 expansion screws.

Connecting the water piping

To connect the water piping
NOTICE
Do NOT use excessive force when connecting the piping. Deformation of the piping can cause malfunctioning of the unit.

1Connect the water piping (field supply) to the water in and outlet of the backup heater.

NOTICE
The function of the 3-way valve is to switch the water pipe. When we use the heat mode or hot water mode,the water flows AB to A; when we use the cool mode,the water flows AB to B.
When the outdoor unit is in cool mode, condensation may occur. Therefore provide a bypass by installing a valve kit to the water inlet of the backup heater. For instructions, refer to the installer reference guide. Do NOT install any other valve kit than the one specified in the installer reference guide.

INFORMATION
Inside the backup heater, an automatic air purge valve isinstalled. During operation, make sure the automatic air purge valve is open(at least 2 circles),remove air in the circuit as much as possible, air present in the water circuit migth cause malfunctioning of the backup heater.

Connecting the electrical wiring

CAUTION

The power supply should be an independent circuit with rated voltage.
Power supply circuit should be earthed effectively.
The wiring must be performed by professional technicians in accordance with national wiring regulations and this circuit diagram.
An all-pole disconnection device which has at least 3mm separation distance in all pole and a residual current device(RCD)with the rating of above 10mA shall be incorporated in the fixed wiring according to the national rule.
Set the electric leakage protector electric technical standards of the state.
The power cord and the signal cord and properly without mutual interference connection pipe or valve。
After wire connection, check it again correctness before poweron.
If you want to rotate the electric box, please release the iron tie on the top of the E-box to avoid sensor’s connection loosing.

To connect the electrical wiring on the backup heater

Insert the wiring from the bottom of the backup heater.
Inside the backup heater, route the wiring as follows:
Fix the wiring with cable ties to the cable tie mountings.

NOTICE
The distance between the high voltage and low voltage cables should be at least 25 mm.

To connect the backup heater power supply
CAUTION
To guarantee the unit is completely earthed, always connect the backup heater power supply and the earth cable.

To connect the backup heater kit to the outdoor unit
For the sensor, connect 2 wires between backup heater terminals XT20M/5+6 and control box connector T1.
For the connection with the control box, connect 3 wires between backup heater terminals XT20/1+2 and control box terminals XT9/31+39.

WARNING
If a tank with a builtin electrical booster heater is part of the system, use a dedicated power circuit for the backup heater and booster heater.
NEVER use a power circuit shared by another appliance. This power circuit must be protected with the required safety devices according to the applicable legislation.

INFORMATION