BAXI HP40 Monobloc Heat Pumps User Manual
- May 15, 2024
- BAXI
Table of Contents
User Manual
HP40 Monobloc Heat Pumps
Cylinder Electrical Back-up to HP Connection & Set-up Procedure
Baxi HP40/HP50 Monobloc Heat Pumps & Baxi ASHP Cylinder
IMPORTANT
Please read & understand this manual before commencing installation and leave
it with the customer for future reference.
Introduction
The cylinder is a purpose designed unvented water heater. The unit has a
stainless steel inner vessel, which ensures an excellent standard of corrosion
resistance. The outer casing is a combination of resilient thermoplastic
mouldings and plastic coated corrosion proofed steel sheet. All products are
insulated with CFC free polyurethane foam to give good heat loss performance.
The unit is supplied complete with all the necessary safety and control
devices needed to allow connection to the cold water mains. All these
components are preset and not adjustable.
This appliance complies with the requirements of the CE marking directive and
is Kiwa approved to show compliance with Building Regulations (Section G3).
The following instructions are offered as a guide to installation which must
be carried out by a competent plumbing and electrical installer in accordance
with Building Regulation G3, The Building Standards (Scotland) Regulations
1990, or The Building Regulations (Northern Ireland).
NOTE: Prior to installation the unit should be stored in an upright
position in an area free from excessive damp or humidity.
IMPORTANT NOTE: FOR DETAILS OF HOW TO INSTALL THE CYLINDER IN ACCORDANCE WITH BUILDING REGULATIONS PLEASE REFER TO THE INSTALLATION & SERVICE MANUAL THAT ACCOMPANIES IT.
General Requirements
IMPORTANT: This appliance can be used by children aged from 8 years and
above and persons with reduced physical sensory or mental capabilities or lack
of experience and knowledge if they have been given supervisory or instruction
concerning use of the appliance in a safe way and understand the hazards
involved.
Children shall not play with the appliance.
Cleaning and user maintenance shall not be made by children without
supervision.
The HWA Charter’s Code of Practice requires that all members adhere to the following:
- To supply fit for purpose products clearly and honestly described
- To supply products that meet, or exceed appropriate standards and building and water regulations
- To provide pre and post sales technical support
- To provide clear and concise warranty details to customers
Baxi HP40/HP50 Monobloc Heat Pumps
Warning
The schematics below are based on the Baxi HP40/HP50 Monobloc Heat Pump range.
See manufacturers instructions on how to connect the cylinder wiring to other
heat pumps to ensure shut down of all heat sources in the event of a thermal
cut out on the cylinder.
Notes:
12 – Temperature sensor – 10 m long (supplied with Baxi HP40/HP50 Monobloc
Heat Pump)
VC – Diverter valve – 28 mm connections (supplied with Baxi ASHP Cylinder)
Important
A temperature sensor and T5 adaptor (part no. 7750595) are required to enable
the kit to operate correctly and to connect the sensor to the PCB. One each of
the sensor and T5 adaptor are supplied with the heat pump. If these are
already being used for another of the products functions please order part no.
7750595.
Baxi HP40/HP50 Monobloc Heat Pumps
A = Main Hydraulic Control Board
Notes: DHW sensor connection:
- Identify the output from the heat pump – CN13 on PCB “A” Main Control Board Hydraulic.
- Route the domestic hot water sensor cable via the low voltage cable feedthrough on the heat pump.
- Fit the sensor connector onto the T5 adaptor.
- Insert the sensor into the overheat thermostat pocket.
Notes: Diverter valve connection:
- Identify the output from the heat pump – CN11 connections 5 & 6 (N=16) on PCB “A” Main Control Board Hydraulic.
- Route the valve power cable via the high voltage cable feedthrough on the heat pump.
- Connect the valve power cable to PCB “A” Main Control Board Hydraulic.
Baxi HP40/HP50 Monobloc Heat Pumps
Connection of the immersion backup heater cable depends on the application.
Only when the cylinder is installed will this wiring be needed. The unit only
sends an on/off signal to the backup heater. An additional contactor is
supplied and a dedicated terminal is needed to supply power to the backup
heater.
The 25 A contactor supplied with the cylinder is ONLY suitable for switching
the 3 kW immersion heater in the cylinder. Ensure that the cable is fixed and
the strain relief is used.
Procedure
- Connect the cable to the appropriate terminals as shown to connections 13 and 16.
- To prevent strain on the cable secure it with cable ties to the cable tie mountings.
| Voltage | 220-240 V AC |
|---|---|
| Maximum running current (A) | 0.2 |
| Wiring size (mm 2) | 0.75 |
| Control port signal type | Type 2 |
Fig. 4: Immersion Backup Heater for Baxi Mono 2 AWHP.
Note: The heat pump unit only sends an ON/OFF signal to the immersion
backup heater. The power source for the heater must be supplied from a fused
spur.
Baxi HP40/HP50 Monobloc Heat Pumps
SPINDLE
POSITIONS
= MINIMUM TEMP
= MAXIMUM TEMP
= APPROX 60 °C
ROTATE SPINDLE CLOCKWISE FOR TEMPERATURE INCREASE AND COUNTER CLOCKWISE FOR
TEMPER ATURE DECREASE.
IMPORTANT!
TEMPERATURE MUST BE SET TO MAXIMUM TO MAXIMISE EFFICIENCY OF HEAT PUMP AND
PROVIDE ADEQUATE WATER TEMPERATURE IN VERY COLD CONDITIONS
Baxi HP40/HP50 Monobloc Heat Pumps
DIP switches are located on the Main Hydraulic Control Board (‘A’ as shown
on page 4) and allow configuration of Immersion Backup Heater.
WARNING
Switch off the power supply before opening the switch box service panel and
making any changes to the DIP switch settings.
| DIP switch S2 | ON = 1; OFF = 0 |
|---|---|
| 1 | 1 = when inactive for 24 hours, pump’s blocking function is disabled – it |
does not run for 1 minute
0 = when inactive for 24 hours, pump’s blocking function is enabled – it runs
for 1 minute
2| 1 = without Immersion Backup Heater
0 = with Immersion Backup Heater
3/4| 0/0 = reserved (pump with max head 8.5 m)
0/1 = reserved (pump with constant speed)
1/0 = reserved (pump with max head 10.5 m)
1/1 = pump (with max head 9.0 m)
Table 1: DIP switch settings for heat pump to recognize 3 kW Immersion
Backup Heater. Ensure switch S2-2 is in the OFF position.
Note: Make sure settings are to this configuration – these should be
factory default settings.
FOR UNITED KINGDOM
For Baxi Customer Support and
Technical Advice, contact us at
0344 871 1545
Opening hours
Monday – Friday, 8.00am-6.00pm
Weekends & Bank Holidays, 8.30am-2.00pm
Please note calls may be recorded for training and monitoring purposes
baxi.co.uk
Baxi
Brooks House,
Coventry Road,
Warwick, CV34 4LL
FOR IRELAND
For Baxi Customer Support and
Technical Advice, contact us at
00353 (0)1 4590870
Opening hours
Monday – Thursday, 8.00am-4.30pm, Friday, 8.00am-4.00pm
In-Warranty cover on Saturdays: 9am – 12pm October – March
We are closed on Bank Holidays, Christmas Day and New Year’s Day.
Please note calls may be recorded for training and monitoring purposes
www.baxi.ie
Baxi,
Unit F 5&6, Calmount Park,
Calmount Road,
Ballymount ,
Dublin 12, Ireland
The policy of Baxi Heating UK is one of continuous product development and, as
such, we reserve the right to change specifications and guarantee terms and
conditions without notice.
7841138-02 (4/23)