Installation manual
3
E(D/B)(H/L)Q011~016BB
Unit for air to water heat pump system
4PW67904-1 – 01.2011
3.
I
NTRODUCTION
3.1.
General information
Thank you for purchasing this product.
This unit is used for both heating and cooling applications. The unit
can be combined with Daikin fan coil units, floor heating applications,
low temperature radiators, domestic hot water tank (option) and
Daikin solar kit (option).
A remote controller is standard supplied with the unit to control your
installation.
Heating/cooling units and heating only units
The unit range consists of two main versions: a heating/cooling (EB)
version and a heating only (ED) version.
Nordic units
EDL and EBL units include special equipment (insulation, heater
sheet,...) to ensure good operation in areas where low ambient
temperature can occur together with high humidity conditions. In
such conditions the EDH and EBH models may experience problems
with severe ice build up on the air-cooled coil. In case such
conditions are expected, the EDL or EBL must be installed instead.
These models contain countermeasures (insulation, heater sheet,...)
to prevent freeze up.
■
Possible options
The units are delivered with an integrated backup heater for
additional heating capacity during low outdoor temperatures. The
backup heater also serves as a backup in case of malfunctioning of
the unit and for freeze protection of the outside water piping during
winter time. The backup heater factory set capacity is 6 kW, however,
depending on the installation, the installer can limit the backup heater
capacity to 3 kW/2 kW. The backup heater capacity decision is a
mode based on the equilibrium temperature, see scheme below.
1 Heat pump capacity
2 Required heating capacity (site dependent)
3 Additional heating capacity provided by the backup heater
4 Equilibriumtemperature (can be set through the user
interface, refer to
"10.10. Field settings" on page 32
)
T
A
Ambient (outdoor) temperature
P
H
Heating capacity
Operation range
Domestic hot water tank (option)
An optional domestic hot water tank can be connected to the unit.
The domestic hot water tank is available in 2 types:
■
tank with built-in electrical booster heater (EKHW*) in 3 different
sizes: 150, 200 and 300 litre,
■
tank without electrical booster heater (EKHTS) in 2 different
sizes: 200 and 260 litre.
Refer to the domestic hot water tank installation manual for further
details.
Solar kit for domestic hot water tank (option)
For information concerning the EKSOLHW solar kit, refer to the
installation manual of that kit.
WARNING
■
Never directly touch any accidental leaking
refrigerant. This could result in severe wounds caused
by frostbite.
■
Do not touch the refrigerant pipes during and
immediately after operation as the refrigerant pipes
may be hot or cold, depending on the condition of the
refrigerant flowing through the refrigerant piping,
compressor, and other refrigerant cycle parts. Your
hands may suffer burns or frostbite if you touch the
refrigerant pipes. To avoid injury, give the pipes time to
return to normal temperature or, if you must touch
them, be sure to wear proper gloves.
CAUTION
Do not rinse the unit. This may cause electric shocks or
fire.
Heater sheet
Drain socket
EDLQ, EBLQ
Standard
Use prohibited
EDHQ, EBHQ
Optional kit
(a)
(a) Combination of both options is prohibited.
Optional kit
(a)
Heating mode
Cooling mode
A
Outdoor temperature
B
Leaving water temperature
No heat pump operation, back up heater only (V3 and W1 models)
No heat pump operation, back up heater only (for V3 models only)
Operation possible, but no guarantee of capacity (for W1 models only)
(*)
- E(D/B)L* units include special equipment (insulation, heater
sheet, ...) to ensure good operation in areas where low ambient
temperatures can occur together with high humidity conditions. In
such conditions the E(D/B)H* units may experience problems with
severe ice build-up on the air-cooled coil. In case such conditions
are expected, the E(D/B)L* units must be installed instead.
- Both E(D/B)L* and E(D/B)H* units have a freeze prevention
function using the pump and backup heater to keep the water
system safe from freezing in all conditions. In case accidental or
intentional power shutdown is likely to happen, we recommend to
use glycol.
(**)
Only for E(D/B)L* units
INFORMATION
Use the EKSOLHW solar kit only in combination with the
EKHW* domestic hot water tank.
Connection between EKSOLHW and EKHTS domestic hot
water tank is NOT possible.
T
A
4
3
1
2
P
H
°
C
5
15
25
40
55
–20
0
35
–15
(
*
)
(
**
)
A
B
–25
°
C DB
°
C DB
°
C
5
22
10
46
A
B
