Mitsubishi Electric MR-420B Installation manual

PHV HEAT PUMP RANGE AIR CURTAINS
INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS
For use with Mr Slim units
PLEASE READ THESE INSTRUCTIONS CAREFULLY BEFORE ATTEMPTING 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
9901025-2
English
Page 1 of 21
Thermoscreens / Mitsubishi Electric
Heat Pump Warm Air Curtain System
Communications Link
Manual On/Off Control and
Permanent mains electrical supply
(from local switched spur) for
x Fans
x Mitsubishi Electric Interface PCB
x Defrost electric heaters (if used)
Heat Setting Control
Heat Pump
Air Curtain
Optional
BMS Control
Interface Board
Mitsubishi Electric
Outdoor Unit
Manual Room
Control
Procon
A32/M
The Heat Pump Warm Air Curtain System consists of :• a Thermoscreens 'PHV Air Curtain' fitted with a PAC-IF010 Mitsubishi Electric Interface
PCB
• a Mitsubishi Electric 'Mr Slim Outdoor Unit'
• a Thermoscreens 'Manual Room Control' for the manual control option by the occupant
Refer to Mitsubishi Electric if the air curtain is to be controlled via a Building Management
System (BMS) or Centralised Controller. Do not install Manual Room Control and
BMS/Centralised Control components together, install either one or the other.
A communications link is supplied to the Thermoscreens Heat Pump Air Curtain from the
Mitsubishi Electric Outdoor Unit. This link provides control of the heat output of the air curtain
and tells the air curtain when the outdoor unit is in defrost mode so auxiliary electric element
heaters (if specified) can provide partial heat back-up during the few minutes of defrost.
The Air Curtain requires a permanent 3 phase electrical supply (3L+N+E) from a local
switched spur to provide power to the defrost cycle electric heating elements, the air curtain
fans and the Mitsubishi Electric Interface PCB. If the defrost cycle electric elements are not
required they can be permanently disconnected, see 'Electrical Connections', and a 1 phase
electrical supply (1L+N+E) used instead.
High and Low Output in this document refers to the heat pump heating capacity of the Air
Curtain, not to any electrical rating.
9901025-2
Page 2 of 21
UNPACKING THE PHV HEAT PUMP AIR CURTAIN
The following items are supplied and packaged within the air curtain box.
PHV Heat Pump Air Curtain
Wall Brackets and Fixing Bolts
Please note end caps are supplied loose
to be fitted during installation
Manual Room Control
If anything is missing or damaged
please contact your place of
purchase immediately.
There will also be a 'Mr Slim Outdoor Unit' supplied by Mitsubishi Electric.
The complete Thermoscreens/Mitsubishi Electric heat pump system, to provide a heat
pump warm air curtain over a doorway, including wiring, fridge pipework, etc. is to be
installed only by an approved Mitsubishi Electric refrigeration contractor.
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.
IMPORTANT
This Heat Pump Air Curtain in intended only for use with a Mitsubishi Electric Mr Slim
Outdoor Unit, for use on R410a with a condensing temperature of 49°C.
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.)
9901025-2
Page 3 of 21
INSTALLATION OF THE HEAT PUMP AIR CURTAIN
The air curtain has been designed to be surface mounted inside of the building and
located horizontally over a doorway. It must not be installed outside of the building,
or built into a cabinet or recessed in anyway. The air curtain is intended for use as a
heating only unit.
Location
The air curtain must be mounted so the discharge grille is
between 1.8m minimum and 3.75m maximum above floor
level and situated as close to the doorway as possible.
Leave a gap of 250mm minimum above the air curtain to
allow for pipework brazing operations. 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.
250mm min
Wall Fixing
Bolt all of the wall brackets supplied to the rear face of the
unit as shown in the adjacent picture using the M6 bolts
supplied. Suitable wall fixing bolts (not supplied) need to
be used to fix the brackets to the wall, taking into account
the type of wall and the weight of the unit*, see table:
Air Curtain
PHV1000DXE HO
Weight (kg)
39
PHV1500DXE LO
59
PHV1500DXE HO
60
PHV2000DXE LO
78
PHV2000DXE HO
80
Step 1. Refer to Figure 1 for mounting details and drill the fixing points in the wall.
Step 2. Screw in the top wall bolts leaving a small gap between the head and the wall.
Lower the unit onto the bolts via the key-hole slots in the top of the wall brackets and then
screw in the bottom wall bolts.
Step 3. Ensure all fixing bolts are tightened and the air curtain is safely secured to the
wall.
Ceiling Suspension
M10 threaded inserts are provided in the top face of the
unit (see Figure 1 for positions) so it can be suspended on
M10 threaded hanging rods (not provided). All suspension
points 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 above)*. Screw the hanging
rods into the inserts by a minimum or 20mm and fit
locking nuts (not supplied) to prevent the rod rotating and
coming away from the casing. Do not screw the hanging
rod too far in or it could interfere with internal components.
* 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.
9901025-2
Page 4 of 21
250 min.
for pipes
9901025-2
255
1400
700
1300
800
N/A
800
N/A
B (mm)
C (mm)
D (mm)
E (mm)
650
1746
1196
A (mm)
168
36
B
A
C
E
Hot Gas
Refrigerant Connection
Holes for M10 drop rods
4 for 1m unit, 6 for 1.5m/2m units
Use all drop rod holes !
C
E
D
FIGURE 1 – DIMENSIONS OF PHV HEAT PUMP AIR CURTAIN
912
1824
948
1896
2296
PHV1000DX PHV1500DX PHV2000DX
377
100
295
Page 5 of 21
Liquid line
Refrigerant Connection
Electrical Supply and
Control Wiring Inlets
250, 500 or 1000 high
to hide pipework, cables, etc.
Optional sheet metal covers
Mitsubishi Electric Outdoor Unit
The Mitsubishi Electric Outdoor Unit is selected to match its refrigerant heat output to
the size of the Air Curtain. See table below for size of outdoor unit to be used together
with performance data for the air curtain.
Heat Output (kW)
Air Curtain
Mr Slim Outdoor
Unit
@outdoor air 7/6°C db/wb
Full
Heat
Half
Heat
Max. Air
Volume
Flow Rate
Max.
Noise
Level
(m3/h)
dB(A) @3m
PHV1000 DXE HO
PUHZ-RP71VHA
8.6
5.34
1400
56
PHV1500 DXE LO
PUHZ-RP71VHA
10.1
5.6
2500
58
PHV1500 DXE HO
PUHZRP140VKA/YKA
14.4
8.3
2600
58
PHV2000 DXE LO
PUHZRP100VKA/YKA
14.1
7.9
3300
59
PHV2000 DXE HO
PUHZ-RP200YKA
21.3
11.2
3130
59
Indoor Air Temperature = 20ºC
Performance figures derived from independent testing by UK test houses BRE and BSRIA in accordance with
test standard EN 14511.
The air curtain normally operates under automatic temperature control and can also run at part load.
Refrigerant Pipework
This must be carried out before connection of any electrical and controls cables
and in accordance with the Instructions that come with the Mitsubishi Electric
Outdoor Unit. This work must only be undertaken by a Mitsubishi Electric
approved Contractor.
Refrigerant installation pipework sizes are as follows :Air Curtain
Discharge Line
(Gas)
PHV1000 DXE HO
5
PHV1500 DXE LO
5
PHV1500 DXE HO
5
PHV2000 DXE LO
5
PHV2000 DXE HO
Liquid
Line
in.
3
in.
3
in.
3
in.
3
1 1 in.
3
8
8
8
8
8
8
8
8
8
8
Maximum Pipe Run
Length
Height
in.
50m
30m
in.
50m
30m
in.
50m
30m
in.
50m
30m
in.
100m
30m
It is intended that refrigerant pipe connections to the air curtain are made using brazed
joints and these must be carried out in a professional and safe manner. If installation
pipe sizes for the discharge (gas) line and liquid line are different from the pipe
connection sizes on the air curtain, suitable pipe reducers must be used for the
connection. R410a refrigerant systems can operate at pressures up to 610 psi (c. 42
Bar). These brazed joints may well be located in a public area and a weakness leading
to an explosion could be extremely dangerous. The air curtain with its coil is
9901025-2
Page 6 of 21
manufactured in accordance with the Pressure Equipment Directive and the installation
must be carried out to a good standard of workmanship. Remove the protective plastic
film on top of the air curtain before starting work. Use a heat sink on the copper pipes
when brazing to reduce the transfer of heat to the inside of the air curtain where
sensitive components are located.
To gain access inside the Air Curtain
To gain access for connection of the electrical supply, controls
wiring and to work on the unit during commissioning, remove the
air inlet grilles and the bottom access panel.
First remove the plastic end caps if already fitted by pulling off to
the side (see picture).
Then remove each inlet grille in turn with its filter by unfastening
the M4 Pozi Head screw at the bottom corner of the grille. Use a
Pozi No.1 screwdriver to access the screw via the elongated
hole at each bottom corner of the grille (see adjacent picture).
To remove the bottom access panel unfasten the access panel
securing screws, one at each end and two in the centre
(PHV1500 and PHV2000 units) and slide the panel out forwards.
Please note: All the panels of the air curtain are covered in a
protective plastic film which should be removed.
location
of screw access panel
Electrical Supply to the Air Curtain
This must be carried out AFTER the connection of the refrigerant pipework. All
electrical wiring and connections MUST be carried out by a competent qualified
electrician in accordance with the latest edition of the IEE wiring regulations
and/or local statutory regulations. (see also Wiring Diagram on Page 10)
• A local isolator having a contact separation of at least 3mm on all poles must be
fitted in the electrical supply to the air curtain and located in an accessible position
adjacent to the unit. 1 phase if defrost electric heaters are not required. 3 phase if
defrost electric heaters are required.
• The appliance must be connected using cables having an appropriate temperature
rating (heat resistant).
• Ensure that the supply cables, circuit breakers and other electrical installation
equipment are correctly sized for the air curtain being installed. See Table
overleaf.
• A 20mm size cable gland or conduit connector should be used for the Electrical
Supply into the air curtain.
• This appliance must be Earthed.
9901025-2
Page 7 of 21
Air Curtain
PHV1000 DXE HO
PHV1500 DXE LO
PHV1500 DXE HO
PHV2000 DXE LO
PHV2000 DXE HO
230V/1ph/50Hz
if defrost electric heaters are not used
Rated Electrical
Rated Current (A)
Power Input (kW)
0.3
0.35
0.35
0.5
0.5
400V/3ph/50Hz
if defrost electric heaters are required
Rated Electrical
Rated Current per
Power Input (kW)
phase (A)
1.3
1.8
1.8
2.7
2.7
4.8
7.8
7.8
9.5
9.5
7.8
12.7
12.7
15.7
15.7
If the defrost electric heaters are to be disabled this can be
done by disconnecting the neutral wire (blue or purple) from
terminal A2 on the contactor inside the air curtain. The
disconnected wire should be terminated safely into unused
auxiliary terminal 14NO as shown in the adjacent picture, or
into a suitable terminal block (see also wiring diagram on
Page 10).
Note: If the defrost electric heaters are disconnected,
discharge air temperatures could be very cold, approximately
6ºC. Defrost times could also be extended.
Wiring to the air curtain should be carried out in accordance with the wiring diagram on
Page 10 and IEE Regulations. The figure below shows the completed wiring for a 3
phase electrical supply if the defrost electric heaters are required.
1) Connection from Mitsubishi Electric
Outdoor Unit
Connections to terminals S2 and S3 provide a
communications link between the Mitsubishi
Electric Outdoor Unit and the Air Curtain. S1 in
the Mitsubishi Electric Outdoor Unit is not used
at all for this Air Curtain Indoor Unit.
2
1
3
2) Connecting a 400V/3ph/50Hz supply
Connect to terminals L1, L2, L3, N and E with
a 3-phase electrical supply. This will power the
electric heating elements during the defrost
cycle, air curtain fans and the Mitsubishi
Electric interface pcb.
Connecting a 230V/1ph/50Hz supply
Connect to terminals L1, N and E with a 1phase electrical supply. This will power the air
curtain fans and the Mitsubishi Electric
interface pcb. NB. Electric heaters must be
disabled !!
3) Connection from Manual Room Control (required only for manual control)
To comply with IEE regulations two separate 2-core, 230v mains rated double
insulated cables of different colours should be used to wire from the manual room
control. One 2-core cable is wired to terminals 1 & 2 (Heat Setting - signal voltage).
The other 2-core cable is wired to terminals 3 & 4 (On/Off switch - 230v).
9901025-2
Page 8 of 21
If a BMS or Centralised Controller is to be used instead of Manual Control it is not
necessary to wire to terminals 1-4. NB. Do not install Manual Room Control and
BMS/Centralised Control together as they can interfere with each other.
Recommended wire size for electrical connections are as follows:
1
1.0mm2
2
2.5mm2 max for access
3
0.75mm2
Do not use cable size of more than 2.5mm2 or connecting the cable is difficult.
Electrical details for the Mitsubishi Electric Mr Slim Outdoor Unit are as follows:
Mr Slim
Outdoor Unit
Electrical Supply
(V/ph/Hz)
Maximum
Current per
phase (A)
PUHZ-RP71VHA
PUHZ-RP100VHA
PUHZ-RP100YHA
PUHZ-RP140VHA
PUHZ-RP140YHA
PUHZ-RP200YHA
230/1/50
230/1/50
415/3/50
230/1/50
415/3/50
415/3/50
19.0
26.5
8.0
28.0
11.0
19.0
9901025-2
Mitsubishi
recommended
BS88 Fuse Size
(A)
20
32
10
32
16
20
Page 9 of 21
9901025-2
K1
K1
1m unit
3 x 1.5kW = 4.5kW
1.5m unit 3 x 2.5kW = 7.5kW
2m unit
3 x 3.0kW = 9kW
OPTIONAL LOW SPEED CONTROLLER
PROCON
A32/M
2-core double insulated flex
(carries signal voltages)
1
2
A-CONTROL SUB
INTERFACE
E S1 S2 S3
3
4
Electrical Supply for
Outdoor Unit
400V/3ph/50Hz
or 230V/1ph/50Hz
L1 L2 L3 N
SITE WIRING
WIRING DIAGRAM – PHV HEAT PUMP AIR CURTAIN
1.3A for PHV1000DX
1.8A for PHV1500DX
2.7A for PHV2000DX
L2 and L3 are not then needed
L1 is then 230V/1ph/50Hz
If Defrost Electric Heating Elements
are not required disconnect neutral
wire from A2 and terminate wire safely
in auxiliary terminal 14NO.
Local Electrical Supply for Defrost
Electric Heaters and Fans
PHV1000 = 7.8A per phase
PHV1500 = 12.7A per phase
PHV2000 = 15.7A per phase
400V/3ph/50Hz
2-core double
insulated flex
(carries 230v ac)
not used
ON/OFF
Ambient (Closed)
Heat (Open)
AUTO
Page 10 of 21
COMMISSIONING THE HEAT PUMP AIR CURTAIN
Ensure that the electrical supply to both the Mitsubishi Electric Outdoor Unit and
the local electrical supply to the Air Curtain are switched off.
Air Curtain Checks
Check that the components inside the air curtain are as shown in the picture below.
Check that the thermal overheat cut-out switch has not ‘tripped’. Push down on the red
button on the top of the thermal overheat switch - if it has tripped it will click back on.
Interface PCB
Thermal
overheat
cut-out
switch
Air sensor
3 speed fan switch
Set the adjustable
aluminium air vanes
within the air curtain air
discharge so they point
straight downwards
over the doorway.
NB. The Mr Slim Outdoor
Unit can be test run using
dip switch SW4-1 on the
outdoor unit (air curtain also
needs electrical power) do
not run for more than 5 mins
as it will operate in cooling.
A Mitsubishi Electric Interface PCB is located within the Thermoscreens Air Curtain to
provide communication between the Mitsubishi Electric Outdoor Unit and the Air Curtain
Indoor Unit.
The Interface PCB on its mounting plate is held in place by a fixing screw located in the
left-hand end panel of the air curtain under the left-hand plastic end cap. Remove the
screw and carefully slide the pcb partially out. For easier withdrawal of the pcb the filter
indicator connection may be temporarily removed.
FILTER
INDICATOR
CONNECTION
LEDS
2-5
Fixing
screw
LED 1
DIP
SWITCHES
CONNECTION
Now go to either “BMS Control” or “Manual Room Control” to continue with the
Commissioning of the Air Curtain.
9901025-2
Page 11 of 21
BMS Control or Centralised Controller
On the Mitsubishi Electric Interface PCB check that the BMS Fan-Run Connection is
plugged into position CNX1 (as shown on previous page and Wiring Diagram). The
dip switches on the Interface PCB are factory set for BMS Control, check they are as
follows:
SW1
SW2
ON
ON
OFF
OFF
1
2
3
4
5
6
7
8
SW3
ON
OFF
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
Black rectangle indicates moveable head of dip switch
Connect a computer running the appropriate software to the Mitsubishi Electric
outdoor unit. Switch on electrical power to both the Mitsubishi Electric outdoor unit
and the Air Curtain. WARNING! Interface PCB will have 230 volts on it.
Communication between the Mitsubishi Electric Outdoor Unit and the Air Curtain
commences approximately 30 seconds after power-up. After this time switch on the
air curtain using the 'On Off Write' parameter of the BMS software.
Once the air curtain fans are operating check that they run at Low (I), Medium (II) and
High (III) speeds using the manual 3 speed fan switch inside the left hand end of the
air curtain. Check there is no mechanical noise coming from the fans and that all fans
are working. Select the fan speed appropriate to the site conditions and leave on this
setting. LEDs 1, 2, 3 and 5 on the Interface PCB should be lit.
Set the BMS 'Mode' parameter to 2. Provided the return air temperature is below
28ºC the air curtain should now be operating in heating mode. Check that the air
stream from the discharge warms up across the whole length of the air curtain after
approximately 20 minutes and that the air stream reaches right down across the
doorway with the door open or closed. If necessary the vanes of the discharge grille
can be angled either inwards or outwards if this gives better penetration/warming of
any incoming draughts. Set up the BMS schedule. It is possible to:
•
•
•
•
•
switch the Air Curtain on and off
determine whether the Air Curtain is operating
monitor the Return Air Temperature
monitor any Mitsubishi Electric system errors
read/write the Mitsubishi Electric Outdoor Unit Mode (heating or ambient)
Note 1: The 'Mode' parameter should only be set to '2' (heating) or '6' (FanAmbient). The system is designed for heating or Fan-Ambient only, using other
'Mode' settings will result in incorrect operation or malfunction. Never set the 'Mode'
parameter to '1' (cooling) as the air curtain is not designed to cope with
condensate.
Note 2: The set point and fan speed of the air curtain cannot be altered through
the BMS or Centralised Controller. The set point is hard coded to 28ºC * via dip
switch SW2 on the Mitsubishi Interface PCB in the air curtain. The fan speed is set
manually at commissioning using the 3 speed fan switch inside the air curtain (see
above).
* for Set Point 26°C use dip switch settings SW2-3 ON, SW2-4 OFF, SW2-5 ON
* for Set Point 24°C use dip switch settings SW2-3 OFF, SW2-4 OFF, SW2-5 ON
Switch off the electrical power to the Mitsubishi Electric Outdoor Unit and Air Curtain.
Carefully slide the Interface PCB back into place, replacing the Filter Indication
9901025-2
Page 12 of 21
connection if removed earlier. Ensure cables are not trapped inside and refit retaining
screw. The Filter Indicator Schedule can now be changed from its default setting if
required (see page 15). Replace the bottom access panel, air inlet grilles (with filters)
and plastic end caps (see “To gain access inside the Air Curtain” page 7). Power-up
both the Outdoor Unit and Air Curtain and re-check the operation of the unit
Manual Room Control
On the Mitsubishi Electric Interface PCB the BMS Fan-Run Connection should be
'parked' at position CNX5 (green), see Wiring Diagram – Page 10. The dip switch
settings should be as follows:
SW1
SW2
ON
ON
OFF
OFF
1
2
3
4
5
6
7
8
SW3
ON
OFF
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
Black rectangle indicates moveable head of dip switch
On the Thermoscreens Manual Room Control set the Fan On/Off switch to Off '0' and
the Ambient/Heat switch to Ambient ' ' Fan only. Switch on the electrical power to
the Mitsubishi Electric outdoor unit and the Air Curtain. WARNING! Interface PCB will
have 230 volts on it.
Room Control
Heat setting switch
• automatic
• full heat
• half heat
Fan On/Off switch
I 0
Ambient/Heat switch
Communication between the Mitsubishi Electric Outdoor Unit and the Air Curtain
commences approximately 30 seconds after power-up. After this time use the Room
Control to switch on the fans. Once the air curtain fans are operating check that they
run at Low (I), Medium (II) and High (III) speeds using the manual 3 speed fan switch
inside the left hand end of the air curtain. Check there is no mechanical noise coming
from the fans and that all fans are working. Select the fan speed appropriate to the
site conditions and leave on this setting.
Using the Manual Room Control set the Ambient/Heat switch to Heat ' ' and the heat
setting switch to Full Heat ' '. Check that the air stream from the discharge warms
up across the whole length of the air curtain after approximately 20 minutes and that
the air stream reaches right down across the doorway with the door open or closed.
Use the Manual Room Control to test the different heat settings. LEDs 1-5 on the
Interface PCB should be lit as follows.
Heat setting LEDs lit
•
LED 1 indicates that there is power to the air curtain
ambient
1
half heat
1,3
•
LEDS 2-5 indicate the different heating settings
full
heat
1,3,5
selected via the Manual Room Control heat setting
automatic
1,2,3,5
switch
9901025-2
Page 13 of 21
Note 1:
The set point and fan speed of the air curtain cannot be altered through
the Manual Room Control. The set point is hard coded to 28ºC * via dip switch SW2 on
the Mitsubishi Interface PCB in the air curtain. The fan speed is set manually at
commissioning using the 3 speed fan switch inside the air curtain, as described above.
* for Set Point 26°C use dip switch settings SW2-3 ON, SW2-4 OFF, SW2-5 ON
* for Set Point 24°C use dip switch settings SW2-3 OFF, SW2-4 OFF, SW2-5 ON
Switch off the electrical power to the Mitsubishi Electric Outdoor Unit and Air Curtain.
Carefully slide the Interface PCB back into place, replacing the Filter Indication
connection if removed earlier. Ensure cables are not trapped inside and refit retaining
screw. The Filter Indicator Schedule can now be changed from its default setting if
required (see page 15). Replace the bottom access panel, air inlet grilles (with filters)
and plastic end caps (see “To gain access inside the Air Curtain” page 7). Power-up
both the Mitsubishi Electric Outdoor Unit and Air Curtain and re-check the operation of
the unit via the Manual Room Control.
Filter Dirty Indicator
The air curtain is fitted with a Filter Dirty Indicator. It is located at
the left-hand end of the outlet grille and signals when the air curtain
inlet grille/filters should be vacuum cleaned or the air curtain
requires servicing.
The indicator states are outlined below:
Indicator State
Indicator Light
Action Required
Reset Button
GREEN FLASH
RED ON
RED FLASH
On 0.5s; Off 3s
On permanently
On 0.5s; Off 0.5s
None
Vacuum inlet
Service filters
N/A
Quick reset
Press for 5s
START
120 hrs
RED ON: Quick reset
120 hrs
480 hrs
Fan operating hours
The filter indicator schedule is based on fan operating hours. For the default schedule,
shown schematically below, the inlet grilles should be vacuum cleaned every 120hrs of
fan operation (every 1 to 2 weeks) and a full service should take place every 480hrs of
fan operation.
RED ON: Quick reset
120 hrs
RED ON: Quick reset
120 hrs
RED FLASH: Hold 5s to reset
9901025-2
Page 14 of 21
The factory set default schedule is suitable for most applications. However, the actual
frequency of cleaning required will depend on the environment. Two alternative filter
indicator schedules are available, and can be selected by changing the ‘jumper’ position
(marked 1, 2 or 3) on the Filter Indicator pcb.
Filter Indicator Schedule
Jumper position
Doublefrequency
Default
Halffrequency
• • • •
• • • •
• • • •
1 23
1 23
1 23
Inlet grille vacuum interval
60 hrs
120 hrs
240 hrs
Filter service interval
240 hrs
480 hrs
960 hrs
Fixing
screws
To access the Filter Indicator pcb to change jumper position:Switch off the electrical power to the Heat Pump Air Curtain.
If the left-hand plastic end cap is already fitted, remove it
from the air curtain. Unfasten the two screws as indicated.
Gently lower the left-hand end of the outlet grille, supporting
it from below. The Filter Indicator pcb is now accessible to
change the jumper position.
Jumper
Once the filter indicator pcb ‘jumper’ has been re-positioned,
push the outlet grille back up into place and fasten screws.
Hand-over to End-User
Before leaving site it is important that there is a 'Hand-Over Meeting' to hand-over the
heat pump system and air curtain installation to the end user or their representative.
This should include a full and clear explanation of how the system operates and a
demonstration showing the air curtain running. Be sure to explain the Filter Indicator
Schedule, that the air inlet grilles must be regularly vacuum cleaned and the unit
serviced at regular intervals.
If the air curtain is to be operated under manual control, it is important that the end user
understands how the Thermoscreens Manual Room Control operates (see Page 13).
That the air curtain operates in FAN (Ambient) mode or in HEAT mode with a fixed
target temperature of 28°C, or less if the hard coded set point has been changed via dip
switch SW2 on the Mitsubishi Interface PCB in the air curtain (see Page 12).
If the air curtain is to be operated under the control of a BMS System or Centralised
Controller, explain all the settings and demonstrate the operation of the system. That
the air curtain should be operated in FAN (Ambient) mode or in HEAT mode with a fixed
target temperature of 28°C, or less if the hard coded set point has been changed via dip
9901025-2
Page 15 of 21
switch SW2 on the Mitsubishi Interface PCB in the air curtain (see Page 12). It is vital
they understand that the air curtain must not be run in COOL or AUTO mode.
Ensure that all instructions and manuals are handed to the end user or their
representative.
9901025-2
Page 16 of 21
SERVICING THE HEAT PUMP AIR CURTAIN
Vacuum Clean the Air Inlet Grilles / Filters
(Weekly, or when the Filter Dirty Indicator shows PERMANENT RED)
With the air curtain switched OFF, a vacuum cleaner with an
extension tube and brush attachment at its end should be used
to clean the face of the air inlet grilles. This is important to
minimise the build-up of dust and lint on the air filters at the
back of the inlet grilles which will affect the performance of the
air curtain. This is a simple service task that can be carried out
by the Cleaner or Janitor on a weekly basis from floor level
without having to access the air curtain at high level. This
should be done weekly as a regular service task and/or when
the Filter Dirty Indicator shows permanent red.
Reset the Filter Dirty Indicator after cleaning by a quick
press of the Reset Button (even if the indicator has not gone
red).
Servicing the Air Curtain
(suggest every 3 Months, or if the Filter Dirty Indicator shows FLASHING RED)
Always disconnect and isolate the mains electricity supply both at the local
electrical supply to the Air Curtain and at the Mitsubishi Electric Outdoor Unit
before servicing, maintaining or repairing the Air Curtain.
Note: All servicing, maintenance and repairs to the air curtain must be carried out by an
approved Service Agent.
Remove the plastic end caps by pulling
off to the side as shown.
Remove each Air Inlet Grille with its air
filter by unfastening the M4 Pozi Head
screw at the bottom corner of the
grille. Use a Pozi No.1 screwdriver to
access the screw via the elongated
hole at the bottom corners of the grille.
Remove the air filters from the air inlet grilles by gently prizing
them free as shown. Vacuum clean and refit the filters into the
curved air inlet grilles. The filters are very durable but may need to
be replaced after a number of service intervals.
9901025-2
Page 17 of 21
Remove the bottom access panel by unfastening the panel fixing
screws (2 on PHV1000, 4 on PHV1500 & 2000 units) and sliding
the access panel out forwards. Clean the inside of the access
panel.
location
of screw access panel
Vacuum clean and remove any build-up of dust, dirt and debris within the air-curtain,
especially on the face of the coil and the electric heating elements.
Note: Fan motors are permanently lubricated and require no additional lubrication.
Once the air curtain has been cleaned, visually inspect the air curtain components.
Ensure pipe temperature sensors are located in their pockets and any foam insulation
covering these pockets is un-damaged. Check the location of the thermal overheat cutout and air sensor and that the thermal overheat cut-out switch has not tripped (see
Section – Commissioning, Page 11). Check all electrical connections and terminals
within the unit are tight and that crimp connections have not become loose.
Refit the bottom access panel and air inlet grilles with filters. Switch on the electrical
supplies and fully function test the air curtain to ensure correct operation (see Section –
Commissioning, Page 13).
Reset the Filter Dirty Indicator after the service by
pressing the Reset Button for at least 5 seconds (even if
the indicator has not gone flashing red).and hand back the
unit to the end user.
9901025-2
Page 18 of 21
Fault Conditions
If the Thermoscreens Heat Pump Warm Air Curtain System does not operate as expected
refer to the fault finding table below:
Symptom
Possible Cause
Electrical power is not switched on at
both the Mitsubishi Electric Outdoor
Unit and at the local electrical isolator
next to the Thermoscreens Air Curtain
Air curtain
does not
operate
BMS Control: Air curtain is set to 'Off'.
Manual Control: Manual Room Control,
Fan On/Off switch set to Off '0'
Problem with air curtain fan motor(s), or
internal wiring, or controls
Action Required
Switch on power to Mitsubishi
Electric Outdoor Unit and
Thermoscreens Air Curtain
and wait for 30 seconds
Check BMS schedule and
amend if necessary
Use Manual Room Control to
adjust fan and heat settings as
appropriate
Use wiring diagram to
investigate possible cause of
fault
Give system sufficient time to
reach operating condition
Check BMS schedule and
change to HEAT if necessary
Use Room Control to adjust
fan and heat settings as
appropriate
If necessary adjust the fixed
target temperature via dip
switch SW2 (see Page 12)
Air curtain has been running for less
than 20 minutes and is still warming up
BMS Control: Air curtain is set to FAN
(Ambient)
Manual Control: Manual Room Control,
Ambient/Heat switch is set to FAN
(Ambient) ' '
Air curtain is Fixed Target Temperature on dip switch
discharging SW2 on Mitsubishi interface pcb in air
cold air
curtain is set too low for heating
Manual Control: Heat setting switch on
Manual Room Control is set to 'AUTO' NB. Air Curtain will only heat if
room air temperature is below
and the SW2 fixed target temperature
the target temperature.
has been exceeded
Service air curtain as
Air Curtain filters and/or heating coil is
described in Section –
dirty.
Servicing on pages 17 & 18
Mitsubishi
Refer to Mitsubishi Electric
Electric
A variety of error codes can occur
Service Manual to understand
system is
because of a fault within the air curtain fault, then inspect and repair
indicating an
air curtain if there is a fault
error code
If the Heat Pump Warm Air Curtain System is still not operating correctly call for a
Mitsubishi Electric Service Agent.
9901025-2
Page 19 of 21
Warranty
If any problems are encountered with the heat pump warm air curtain please contact
your Mitsubishi Electric Service Agent.
Care has been taken in compiling these instructions to ensure they are correct, although
Thermoscreens Ltd. disclaims all liability for damage resulting from any inaccuracies
and/or deficiencies in this documentation. Thermoscreens Ltd. retain the right to change
the specifications stated in these instructions.
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
9901025-2
Page 20 of 21
Thermoscreens Ltd
St. Mary’s Road
Nuneaton
Warwickshire
CV11 5AU
United Kingdom
Telephone: +44 (0)24 7638 4646
Fax: +44 (0)24 7638 8578
EC DECLARATION OF CONFORMITY
as defined by the EC Council Directive on Machinery 2006/42/EC, the Low Voltage Directive 73/23/EEC,
the Electromagnetic Compatibility Directive 89/336/EEC and the Pressure Equipment Directive 97/23/EC
Herewith we declare that the air movement equipment designated below, on the basis of its design and
construction in the form brought onto the market by us in accordance with the relevant safety, health and
performance requirements of the Machinery.
If alterations are made to the machinery without prior written permission from us this declaration becomes invalid.
Designation of Equipment :
THERMOSCREENS AIR CURTAINS
Series Type :
PHV1000 DXE HO, PHV1000RDXE HO, PHV1500 DXE LO,
PHV1500RDXE LO, PHV1500 DXE HO, PHV1500R DXE HO,
PHV2000 DXE LO, PHV2000R DXE LO, PHV2000 DXE HO,
PHV2000R DXE HO
Relevant EC Council
the Machinery Directive (2006/42/EC)
the Low Voltage Directive (73/23/EEC as amended by 93/68/EEC)
the Electromagnetic Compatibility Directive (89/336/EEC as amended by
91/31/EEC and 93/68/EEC)
the Pressure Equipment Directive (97/23/EC)
Applied Harmonised
Standards :
Machinery - EN 292-1, EN 292-2, EN 294, EN 394, EN 414
LVD - EN 60335-1, EN 60335-2-30, EN 60335-2-40
EMC - EN55011, EN 61000-3-2, EN 61000-3-3, EN 61000-4-2,
EN 61000-4-4, EN61000-4-5, EN61000-4-11, EN61000-6-4
PED - EN 13134, EN 13133
Basis of Self Attestation :
Quality Assurance to BS EN ISO 9001 : 2000
B.S.I. Registered Firm Certificate Number FM 85224
Responsible Person :
Mr. M. Francis, Managing Director, Thermoscreens Limited
Date :
17th June 2009
Signed :
9901025-2
Page 21 of 21