4 Preparation
Installation manual
8
EJHA04AAV3
Daikin Altherma hybrid monobloc – Heat pump module
4P530607-1B – 2018.10
▪
Filter.
It is strongly recommended to install an additional filter on
the heating water circuit. Especially to remove metallic particles
from foul heating piping, it is recommended to use a magnetic or
cyclone filter, which can remove small particles. Small particles
may damage the unit and will NOT be removed by the standard
filter of the heat pump system.
4.2.1
Water piping lengths and height
difference
In case of *HY32AA gas boiler
e
d
a
H1
b
D1
D2
D3
D1
c
M
a
Outdoor unit
b
*HY32AA gas boiler
c
3-way valve
d
Space heating circuit
e
DHW tank (if applicable)
What?
Distance
H1
Maximum height difference between
outdoor unit and
*HY32AA gas boiler
Depends on the
expansion vessel
(option on
*HY32AA
gas boiler)
—
Maximum total length of the water
piping (indoor part + outdoor part)
Depends on the
external static pressure
(ESP) of the system.
D1
Maximum length of the outdoor part
of the water piping (to prevent
freeze-up of the water piping)
30 m
(but restricted by
D2
when a DHW tank is
installed)
D2
Maximum distance between outdoor
unit and DHW tank (if applicable)
10 m
D3
Maximum distance between outdoor
unit and *HY32AA gas
boiler
See table below.
If...
Then D3...
Glycol?
Ø
Condition
(a)
ESP 25 kPa ESP 35 kPa
Water
(without
glycol)
3/4" ΔT 5°C → 11.5 l/min
16 m
8.5 m
ΔT 8°C → 7.2 l/min
63 m
45 m
1" ΔT 5°C → 11.5 l/min
89 m
54 m
ΔT 8°C → 7.2 l/min
304 m
224 m
Water +
glycol
1" Start-up with glycol
at –15°C → 7.0 l/min
38 m
25 m
ΔT 5°C with glycol at
20°C → 12.8 l/min
2 m
—
ΔT 8°C with glycol at
20°C → 8.0 l/min
134 m
85 m
(a)
Based on capacity of 4 kW
ESP
External static pressure calculated with 10×(90° elbow)
In case of third-party gas boiler
d
D1
D2
D3
D4
D4
D3
b
a
c
H1
a
Outdoor unit
b
Third-party gas boiler
c
Space heating circuit
d
External pump
What?
Distance
H1
Maximum height difference between
outdoor unit and third-party gas
boiler
Depends on the
expansion vessel in the
third-party gas boiler.
—
Maximum total length of the water
piping (indoor part + outdoor part)
Depends on the
external static pressure
(ESP) of the system.
D1
Maximum distance between outdoor
unit and external pump
10 m
D2
Distance between external pump and
gas boiler
As short as possible.
D3
Maximum length of the outdoor part
of the water piping (to prevent
freeze-up of the water piping)
30 m
D4
Maximum distance between outdoor
unit and third-party gas boiler
See table below.
If...
Then D4...
Glycol?
Ø
Condition
(a)
ESP 25 kPa ESP 35 kPa
Water
(without
glycol)
3/4" ΔT 5°C → 11.5 l/min
20 m
13 m
ΔT 8°C → 7.2 l/min
68 m
50 m
1" ΔT 5°C → 11.5 l/min
123 m
88 m
ΔT 8°C → 7.2 l/min
340 m
260 m
Water +
glycol
1" Start-up with glycol
at –15°C → 7.0 l/min
44 m
30 m
ΔT 5°C with glycol at
20°C → 12.8 l/min
36 m
14 m
ΔT 8°C with glycol at
20°C → 8.0 l/min
170 m
120 m
(a)
Based on capacity of 4 kW
ESP
External static pressure calculated with 10×(90° elbow)
4.2.2
To check the water volume and flow rate
Minimum water volume
Check that the total water volume in the installation is minimum
20 litre, the internal water volume of the outdoor unit NOT included.
INFORMATION
In critical processes, or in rooms with a high heat load,
extra water might be required.
NOTICE
When circulation in each space heating loop is controlled
by remotely controlled valves, it is important that the
minimum water volume is guaranteed, even if all of the
valves are closed.
Содержание altherma EJHA04AAV3
Страница 33: ......
Страница 34: ......
Страница 35: ......
Страница 36: ...4P530607 1B 2018 10 Copyright 2018 Daikin ...