Air-to-water Heat Pump Split Versati
71
SPLIT TYPE
4.7 Installation of Insulated Water Tank
4.7.1 Installation measure
The insulated water tank should be installed and keep levelly within 5m/16.40ft and vertically within 3m/9.84ft
from the indoor unit. It can be installed in the room.
Standing water tank must be installed vertically with the bottom on the ground, never suspended. Installation
place must be firm enough and the water tank should be fixed on the wall with bolts to avoid vibration, as shown in
the following figure. Weight capacity of water tank during installation should also be considered.
Fix
With
Bolts
Water Tank
Installed on the ground
and never suspended
The minimum clearance from the water tank to combustible surface must be 500mm(19-11/16inch).
There should be water pipe, hot water joint and floor drain near the water tank in favor of water replenishment,
hot water supply and drainage of water tank.
Connection of inlet/outlet waterway: Connect the safety check valve attached with the unit (with the arrow on it
pointing at the water tank) with the water inlet of water tank with PPR pipe according to the following figure, sealing
with unsintered tape. The other end of the safety check valve should connect with tap water joint. Connect the hot
water pipe and water outlet of water tank with PPR pipe.
Tap water
Safety check valve
Note
(a)
For safe use of water, water outlet/inlet of water tank must connect with a certain length of PPR pipe ,L
≥70×R2(cm, R is inside radius of the pipe). Moreover, heat preservation should be conducted and metal pipe
cannot be used. For the first use, water tank must be full of water before the power is on.
4.7.2 Selection of Insulated water tank
The insulation water tank is optional and can be purchased locally by customers.
Recommendations for the selection of thermal insulation water tank: the water tank needs to use the inner coils
with inner coil area not less than 3m
2
(32.292ft
2
), and the water tank volume not greater than 300L(79.252US gal).
The power of the auxiliary electric heater for the water tank is not allowed to exceed 10236Btu/h (3kW).
4.7.3 Connection with inner unit
(1)
If connection between water tank and indoor unit should be through the wall, drill a hole φ70 for pass of
circulating water pipe. It is unnecessary if the hole is not needed.
(2) Preparation of pipelines: Circulating water outlet/inlet pipe must be hot water pipe, PPR pipe with nominal
out diameter of dn25 and S2.5 series (wall thickness of 4.2mm) being recommended. Cooling water inlet
pipe and hot water outlet pipe of water tank should also be hot water pipe, PPR pipe with nominal out
diameter of dn20 and S2.5 series (wall thickness of 3.4mm) being recommended. If other insulated pipes
are adopted, refer to the above dimensions for out diameter and wall thickness.
