Thermoscreens HP1000R DX, HP1000R DXE, HP1500R DXE, HP2000R DXE Installation, Operation & Maintenance Instructions Manual
T9901088-1-3 UK Page 1 of 40
HP RECESSED HEAT PUMP RANGE AIR CURTAINS
INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS
For use with Mr Slim Outdoor Units
PLEASE READ THESE INSTRUCTIONS CAREFULLY BEFORE ATTEMPTI NG INSTALLATION
Thermoscreens Ltd
St. Mary’s Road Nuneaton
Warwickshire England
CV11 5AU
Email: sales@thermoscreens.com
Tel: +44 (0) 24 7638 4646
Fax: +44 (0) 24 7638 8578
www.thermoscreens.com
English
ErP
compliant
T9901088-1-3 UK Page 2 of 40
Thermoscreens / Mitsubishi Electric
Mr Slim HP Recessed Heat Pump Air Curtain System
CONTENTS
Page
Air Curtain System Schematics 3
Design Information 5
Unpacking the Air Curtain 8
INSTALLATION
Installation of the Air Curtain 10
Figure 2 – Dimensions of HP R Air Curtain 12
Fitting the Recessed Grille 13
Mitsubishi Electric Outdoor Unit 14
Refrigerant Pipework 14
To gain access inside the Air Curtain 15
Electrical Supply and Wiring to the Air Curtain 16
Wiring Diagram 1 (Defrost Cycle Auxiliary Heater disabled - as supplied) 18
Wiring Diagram 2 (Defrost Cycle Auxiliary Heater enabled on site) 19
Wiring of Air Curtain Fan Speed 20
Condensate Disposal System 20
COMMISSIONING
Air Curtain Checks 22
Dip Switch Settings and Air Temperature Sensor Position 23
Selecting the Fan Speeds of the Air Curtain 24
Starting the Heat Pump System 26
Weather Compensation Control or Discharge Air Temperature Control 26
Inlet Air Temperature Control or Room Air Temperature Control 29
Filter Dirty Indicator 30
Hand-over to End-User 32
USER INSTRUCTIONS
Weather Compensation Control or Discharge Air Temperature Control 33
Inlet Air Temperature Control or Room Air Temperature Control 34
SERVICING
Fortnightly Cleaning 35
Six Monthly Servicing 35
Fault Finding 38
T9901088-1-3 UK Page 3 of 40
Thermoscreens / Mitsubishi Electric
Mr Slim HP Recessed Heat Pump Air Curtain System
with Weather Compensation Control
or Discharge Air Temperature Control
Air Curtain is supplied set-up to operate on either of these control modes
The Mr Slim HP Heat Pump Air Curtain System consists of :-
a Thermoscreens 'HP Recessed Air Curtain' fitted with a Mitsubishi Electric PAC-
IF010B-E Interface PCB, with dip switches set to be a PAC-IF020B-E *
a Mitsubishi Electric 'Mr Slim Outdoor Unit' +
a Mitsubishi Electric 'PAR-W21 MAA Remote Controller' for manual control by the
occupant of weather compensation control or discharge air temperature control +
a door switch to change fan speeds; higher speed when the door is open, lower speed
when the door is shut
^
a Thermoscreens ‘Remote 3-Speed Fan Switch’ (if end user requires this) *
* - supplied by Thermoscreens Ltd.
+
- Mitsubishi Electric items supplied by the installer
^
- supplied by the installer
Refrigeration pipework
Electrical cables
Control cables
BMS Control
Heat Pump
Air Curtain
Mitsubishi Electric
Mr Slim Outdoor Unit
S2, S3 communication
link with outdoor unit
Permanent electrical supply (from local switched spur)
1-phase for air curtain as supplied,
3-phase only if defrost cycle auxiliary heater is needed
(site change then required to air curtain)
(S1 is not used)
Permanent electrical supply
(from local switched spur)
Mitsubishi Electric
PAR-W21 MAA
Remote Controller
Optional
BMS Control
Interface Board
On/Off
Mode change
Weather compensation
control or Discharge air
temp. control
Mitsubishi error
BMS
Control
Remote
3-Speed Fan
Switch
(if end user
requires this)
Door Switch to change fan speeds,
Door open - High; Door shut - Low
(industry standard fan speed control)
T9901088-1-3 UK Page 4 of 40
Thermoscreens / Mitsubishi Electric
Mr Slim HP Recessed Heat Pump Air Curtain System
with Inlet Air Temperature Control
or Room Air Temperature Control
Air Curtain is modified during commissioning to operate on these control modes
The Mr Slim HP Heat Pump Air Curtain System consists of :-
a Thermoscreens 'HP Recessed Air Curtain' fitted with a Mitsubishi Electric PAC-
IF010B-E Interface PCB *
a Mitsubishi Electric 'Mr Slim Outdoor Unit' +
a Mitsubishi Electric 'PAR-30MAA Remote Controller' for manual control by the
occupant of inlet air temperature control or room air temperature control +
a door switch to change fan speeds; higher speed when the door is open, lower speed
when the door is shut
^
a Thermoscreens ‘Remote 3-Speed Fan Switch’ (if end user requires this) *
* - supplied by Thermoscreens Ltd.
+
- Mitsubishi Electric items supplied by the installer
^
- supplied by the installer
Refrigeration pipework
Electrical cables
Control cables
BMS Control
Heat Pump
Air Curtain
Mitsubishi Electric
Mr Slim Outdoor Unit
Permanent electrical supply
(from local switched spur)
Optional
BMS Control
Interface Board
On/Off
Mode change
Capacity control
Temperature monitoring
Mitsubishi error
BMS
Control
Remote
3-Speed Fan
Switch
(if end user
requires this)
Door Switch to change fan speeds,
Door open - High; Door shut - Low
(industry standard fan speed control)
Mitsubishi Electric
PAR-30MAA
Remote Controller
S2, S3 communication
link with outdoor unit
Permanent electrical supply (from local switched spur)
1-phase for air curtain as supplied,
3-phase only if defrost cycle auxiliary heater is needed
(site change then required to air curtain)
(S1 is not used)
T9901088-1-3 UK Page 5 of 40
DESIGN INFORMATION
AS SUPPLIED the air curtain operates on a 1 phase electrical supply (1L+N+E) from a local
switched spur which provides power for fans and controls. There is an integral defrost
cycle auxiliary heater located inside the air curtain but this is ‘disabled’ as supplied. If the
defrost cycle auxiliary heater is required the air curtain will then need a 3 phase electrical
supply (3L+N+E) from a local switched spur, instead of the 1 phase electrical supply, to
provide power for the heater as well which will need to be ‘enabled’ on site during
commissioning, see also notes on Page 6 and Section 'Installation - Electrical Supply and
Wiring to the Air Curtain', Page 16. There is also a communications link with the Mr Slim
outdoor unit via connections S2 and S3 (S1 is not used).
AS SUPPLIED the air curtain is set up for energy saving Weather Compensation Control
or Discharge Air Temperature Control and is used with a Mitsubishi Electric PAR-W21
MAA Remote Controller. The following functions are available:-
On/Off control of the Mitsubishi Electric heat pump system
Mode change between Heating mode and Fan only mode (Cooling mode not
available)
Energy saving weather compensation control or discharge air temperature control via
a set target temperature.
Signal for when the outdoor unit is in defrost mode so the defrost cycle auxiliary heater
(if enabled) can provide partial heat back-up during the few minutes of defrost.
Error signal for if the Mitsubishi Electric heat pump system has a problem
Weather Compensation Control (HEATING ECO): This looks at the outside air
temperature using an air sensor on the Mitsubishi Electric outdoor unit and automatically
adjusts the temperature of the air curtain discharge air in accordance with a heating curve.
It will select a warmer discharge air stream if it is cold outside and a cooler discharge air
stream if it is not so cold outside, as the discharge air does not need to be as warm. This
achieves significant energy and carbon savings because the heat pump compressor only
works at the capacity it needs to. Figure 1 shows a typical heating curve set up for weather
compensation control, temperature points 1, 2, 3 and 4 are selected during
commissioning.
Discharge Air Temperature Control (HEATING): The end user sets a target temperature
of, say 35°C, the air curtain then controls the temperature of the discharge air so it will stay
at 35°C even if the inlet air temperature changes.
0 15 5 -5 20
Outdoor Air Temperature (°C)
40
20
30
Air Curtain
Discharge Air
Temperature (°C)
2
3
Figure 1
Weather Compensation Control
Typical heating curve
1
10
4
Heated Air Curtain
Ambient Air Curtain
T9901088-1-3 UK Page 6 of 40
The air curtain can also be set up on site during commissioning to operate under Inlet Air
Temperature Control or Room Air Temperature Control and is then used with a
Mitsubishi Electric PAR-30 MAA Remote Controller. The following functions are available:-
On/Off control of the Mitsubishi Electric heat pump system
Mode change between Heating mode and Fan only mode, with Cooling mode also
available if enabled during commissioning and with a condensate disposal system
Capacity control of the Mitsubishi Electric heat pump system
Temperature monitoring of the inlet air entering the heat pump air curtain, or the room
air temperature at the remote controller
Signal for when the outdoor unit is in defrost mode so the defrost cycle auxiliary heater
(if enabled) can provide partial heat back-up during the few minutes of defrost.
Error signal for if the Mitsubishi Electric heat pump system has a problem
Refer to a Mitsubishi Electric agent if the air curtain is to be controlled via a Building
Management System (BMS) or Centralised Controller.
It should be noted that during heating mode, if the outdoor unit goes into its defrost cycle
during cold weather, the air curtain fans will continue to operate to maintain the allimportant air stream across the doorway. It is this air stream, particularly towards the top of
the doorway, which is so effective at stopping buoyant warm air from inside the building
escaping to outside and wasting energy and also in reducing airborne contamination.
The temperature of the discharge air can be low during the 6 to 7 minute defrost cycle
period that may occur every few hours under particular outdoor weather conditions but this
has rarely become an issue with the end user and is really only a perceived problem.
There is a defrost cycle auxiliary heater fitted in the air curtain which is disabled when the
air curtain is delivered. If there are concerns for a particular installation this defrost cycle
auxiliary heater can be enabled during site commissioning and this will maintain the
discharge air at a higher temperature during the defrost cycle. A 3-phase electrical supply
is then required to power the air curtain.
Point of Information: If used, an auxiliary defrost heater may seem counter-productive for
a heat pump system. When put into context, however, the auxiliary heater fitted is of low
output for the size of the air curtain, it will just temper the discharge air and is only used for
a few minutes a day during a small period of the year. Tests at the Building Research
Establishment (BRE) test house on the heat pump air curtain system showed that even
with the auxiliary heater cutting in during defrost, as it has to during their EN14511
performance test, the annual seasonal COP was hardly affected.
Cooling is possible if the air curtain is modified during commissioning to operate under
Inlet Air Temperature Control or Room Air Temperature Control. It will not operate in
cooling if set-up to operate under Weather Compensation Control or Discharge Air
Temperature Control, which is how the air curtain is supplied.
The air curtain is supplied with its cooling mode disabled, although an integral condensate
drain tray is fitted inside the air curtain so it could be used in cooling mode during warm
weather, if so desired. This should be decided at the design stage as a condensate drain
system will need to be installed if cooling is required and extended to a suitable drain by
the installer. The condensate can be drained by gravity within the ceiling void by
connecting suitable condensate hose onto the 15mm drain pipe on the condensate drain
tray inside the air curtain. If a gravity condensate drain is not suitable it will be necessary
to remove condensate using a condensate pump, supplied and fitted by the installer. The
T9901088-1-3 UK Page 7 of 40
condensate pump can be located inside the right hand end of the air curtain or in a remote
location outside of the unit if required. It must be of sufficient capacity, see Page 21, self
priming and capable of providing the appropriate suction head so the pump will lift
condensate out of the air curtain, particularly if it is in a remote location. There are two hole
penetrations at the right hand end of the air curtain for condensate pipework to pass
through, see Figure 2, Page 12. Suitable condensate pumps are Peristaltic or Rotary
Diaphragm type. We recommend the Blue Diamond rotary diaphragm type with cooling
signal sensor (drainStik) manufactured by Charles Austen Pumps Ltd.
(www.miniblue.co.uk).
If using a condensate pump it is recommended that it has the facility so it only operates
when the air curtain is in cooling mode by detection of water in the drain tray or by
detecting a cooling differential in the airflow. It should also have a pump overrun feature to
empty the drain tray as much as possible when the air curtain is switched off. It should
have an alarm system with appropriate sensor fitted in the drain tray that will give a voltfree signal (closed circuit = alarm) and stop the air curtain cooling if the condensate drain
tray is in danger of flooding (air curtain fans will continue to operate). There is a fixing
bracket with 8mm diameter hole attached to the drain tray inside the air curtain so a
condensate sensor can be fixed in the tray by the installer. The hole can be enlarged, if
necessary, to suit the type of sensor used so it is located in the tray at the appropriate
position, see the manufacturer’s instructions that come with the condensate pump for
further information. A 230V AC, single phase electrical supply is provided inside the air
curtain to power a condensate pump and a condensate alarm connection is provided for
the condensate pump alarm circuit.
Warning: The air curtain condensate collection system is designed to remove condensate
with the air curtain operating in cooling mode during normal summer weather conditions in
countries with a temperate climate. In case of extreme weather conditions, drain tray
blockage or condensate pump failure, which can occur, it is vital that the design of the floor
beneath the air curtain and its surface is such that it will not become slippery or damaged if
it became wet. This is similar to the conditions that might be experienced with heavy
rainfall in at an open doorway or wet pedestrian foot traffic, so careful consideration must
be paid to the design of the floor and its surface finish.
If it is intended that the air curtain should not operate in cooling mode (which is how the air
curtain is supplied) and a condensate drain system is not fitted, it is still recommended that
the floor design and surface be as described above, in case cooling mode is used in the
future and also to cope with heavy rainfall or wet pedestrian foot traffic.
The air curtain is designed only for use with a Mitsubishi Electric Mr Slim Outdoor Unit for
use on R410A. The complete Thermoscreens air curtain / Mitsubishi Electric heat pump
system, including refrigerant pipework, wiring, controls, etc. must be installed only by an
approved Mitsubishi Electric refrigeration contractor.
Persons using the air curtain must be given adequate instruction and supervision
concerning the use of the appliance by a person responsible for their safety. The air
curtain is not intended for use by persons (including children) with reduced physical,
sensory or mental capabilities.
These instructions must be read in conjunction with the separate Mitsubishi Electric
instructions that come with the Mr Slim Outdoor Unit. All instructions should be kept by the
building facilities manager for future reference.
T9901088-1-3 UK Page 8 of 40
UNPACKING THE AIR CURTAIN
The following items are supplied and packaged within the air curtain box :-
If anything is missing or damaged please contact your place of purchase immediately.
There will also be a 'Mr Slim Outdoor Unit' and ‘Remote Controller’ (if required) supplied by
Mitsubishi Electric.
The Installer will also need to supply and install the following:-
or
PAR-30 MAA Remote Controller
If Air Curtain is to be manually controlled for
inlet air or room air temperature control,
also needed for commissioning
PAR-W21 MAA Remote Controller
If Air Curtain is to be manually controlled for
weather compensation control or discharge air
temp. control, also needed for commissioning
Remote 3-Speed Fan Switch
If remote fan speed control is required by the end use
r
NB Industry standard is to have High/Low fan speed control
via a door switch or single speed set at commissioning
Recessed Heat Pump Air Curtain
Air Inlet
Air Discharge
Recessed Grille with Filter
Air Discharge
A
ir Inlet
T9901088-1-3 UK Page 9 of 40
The installer may also need to supply and install the following optional items:-
The complete Thermoscreens air curtain / Mitsubishi Electric heat pump system, to provide a
heat pump air curtain over a doorway, including wiring, fridge pipework, etc. is to be installed
only by an approved Mitsubishi Electric refrigeration contractor.
IMPORTANT
This Heat Pump Air Curtain is intended only for use with a Mitsubishi Electric Mr Slim
Outdoor Unit, for use on R410A.
These instructions must be read in conjunction with the Mitsubishi Electric Mr Slim
Outdoor Unit instructions.
(All documentation supplied with each unit should be stored and kept for future reference.)
For your records:
Date of Purchase……………………………..
Place of Purchase…………………………….
Serial Number…………………………………
For warranty purposes proof of purchase is necessary so please keep a copy of your invoice.
Condensate Pump – self priming with
cooling mode detection, alarm
system and pump overrun
If Air Curtain is to be operated in COOL mode
and gravity drain cannot be used – see text
on Page 6 & 7 for more information
Example Switch only
Door Switch – for energy efficient,
noise friendly, fan speed control,
Door open – Higher fan speed
Door shut – Lower fan speed
Gives industry standard fan speed control –see
wiring diagrams on Pages 18 & 19 and text on
Pages 20 & 24 for more information
T9901088-1-3 UK Page 10 of 40
Air Discharge
A
ir Inlet
DOORWAY
INSTALLATION OF THE AIR CURTAIN
The air curtain is designed to be recessed within ceiling voids or bulkheads within a
building and located horizontally over a doorway. It must not be installed outside of
the building.
Location
The air curtain must be mounted so the recessed grille
is located up to 3.2m maximum above floor level and
as close to the doorway as possible. The Air Discharge
section of the recessed grille must be nearest to the
doorway and the Air Inlet section furthest from the
doorway. The air curtain must be installed level or
condensate may leak out if used for cooling. Beware of
doorway top edges, structural beams, door
opening/closure devices, etc. which may interfere with
the air stream and affect the location of the unit.
Ensure there will be adequate clear space above the top of the unit within the ceiling void
to safely allow for pipework brazing operations.
Ceiling Suspension
Make the cut-out in the ceiling to the dimensions given
in Figure 2, Page 12, being as accurate as possible.
The air curtain can be manoeuvred straight up through
the ceiling cut-out. It may be necessary to notch the
ceiling cut-out in places to clear screws on the casing.
Alternatively the ceiling can be fitted after the air
curtain is installed. Bear in mind it will be necessary to
carry out pipework brazing operations above the air
curtain once it is located in position. Ensure there is
sufficient access and height clearance within the
ceiling void to do this.
Holes are provided in the top face of the casing (see Figure 2, Page 12 for positions) to
allow the unit to be suspended on M10 threaded rods (not provided). There are 4 hanging
points on the HP1000R unit and 5 hanging points on the HP1500R and HP2000R units all hanging points must be used.
Air Curtain Weight (kg)
Number of
hanging points
HP1000R DXE 52 4
HP1500R DXE 75 5
HP2000R DXE 93 5
There are two M10 hanging rods at each end of the unit (four in total) that enter the casing
from the top and attach to fixing brackets near the bottom of the unit (see picture above –
looking up into the air curtain). Use M10 lock-nuts either side of the fixing bracket to
secure the hanging rod. Do not let these four hanging rods come below the bottom of the
unit casing or they may prevent the recessed grille fitting properly.
M10
threaded
hanging
rods
Not to come
below casing
T9901088-1-3 UK Page 11 of 40
On the HP1500R DXE and HP2000R DXE units there is an additional hanging point
located towards the middle of the unit for an M10 hanging rod and this must be used.
Ensure each of the hanging rods is secured onto a suitable structure that can support the
weight of the unit (see Table on Page 10).*
Adjust the height of the unit on its hanging rods so the bottom surface of the casing goes
38mm up into the ceiling as shown in the diagram. Ensure the unit is level or condensate
may leak out if it is used for cooling.
CEILING LEVEL
38
CEILING LEVEL
38
Bottom surface of recessed
air curtain casing
M10 hanging rods
RECESSED AIR CURTAIN
* It is the sole responsibility of the installer to ensure that the building fixing locations and suspension system
used are suitable for the air curtain being installed.
T9901088-1-3 UK Page 12 of 40
HP1000R DXE
Gas Line Refrigerant Connection (G)
Liquid Line Refrigerant Connection (L)
Liquid Line
Refrigerant
Connection (L)
Gas Line Refrigerant
Connection (G)
20mm hole on top for pumped
condensate disposal (if cooling)
Electrical Supply
and Mitsubishi
Wiring Inlets (M20)
20mm hole for gravity or pumped
condensate disposal (if cooling)
CEILING LEVEL
Cut-Out
in Ceiling
HP1500R DXE HP2000R DXE
1250 1750 2340
Length (mm)
Width (mm)
-
724 1129
976
1303 1803 2393
1250 1750 2340
485
-1161
485 485
539
485
348
6
D
65 265
2525
A (mm)
B (mm)
C (mm)
D (mm)
E
100 115
170 166 189
E (mm)
5
8
in.
1
2
in.
1
2
in.
5
8
in.
7
8
in.
5
8
in.
100
G
L
A
Holes for M10 drop rods
4 for 1m unit,
5 for 1.5m & 2m units
Use all drop rod holes !
B
C
200
Additional (M20)
Wiring Inlets on top
FIGURE 2 – DIMENSIONS OF HP R HEAT PUMP AIR CURTAIN
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