Kaisai KHC-22RY3, Instalation Manual

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11
8.1 Application 1
Space heating with a room thermostat connected to the unit.
The application examples given below are for illustration only.
8 TYPICAL APPLICATIONS
Unit operation and space heating
：
When a room thermostat is connected to the unit and when there is a heating request from the room thermostat, the unit will
start operating to achieve the target water flow temperature as set on the user interface. When the room temperature is above
the thermostat set point in the heating mode, the unit will stop operating. The circulation pump (1.7) and (10) will also stop
running. The room thermostat is used as a switch here.
The volume of balance tank(8) should be greater than 40L. The drain valve (6) should be installed at the lowest positon
of the system. Pump_o (10) should be controlled by outdoor unit and connect to corresponding port in the outdoor
unit( refer to 9.7.6 Connection for other components/For outside circulation pump P_o ).
NOTE
1
1.1
1.2
1.3
1.4
1.5
1.6
1.7
2
3
Outdoor unit
Manometer
Pressure relief valve
Expansion vessel
Plate heat exchanger
Air purge valve
Flow switch
P_i: Circulation pump inside the unit
Y-shape filter
Stop valve (field supply)
Assembly unit Assembly unit Coding Coding
4
5
6
7
8
8.1
8.2
9
10
11
FHL 1…n
Wired controller
Room thermostat (field supply)
Drain valve (field supply)
Fill valve (field supply)
Balance tank (field supply)
Air purge valve
Drain valve
Expansion vessel (field supply)
P_o: Outside circulation pump (field supply)
Collector / distributor (field supply)
Floor heating loop (field supply)
8.1
8.2
2 3
6 7
8
FHL1 FHL2 FHLn ----
----
9
T
10
11
4
5
1
1.5
1.4
1.2
1.3
1.7
1.6
1.1
12
8.2 Application 2
Space heating without room thermostat connected to the unit. Domestic hot water tank is connected to the unit, and the tank is
with solar heating system.
The volume of balance tank(8) should be greater than 40L. The drain valve (6) should be installed at the lowest positon
in the system. Pump(10) should be controlled by outdoor unit and connect to corresponding port in the outdoor unit(refer
to 9.7.6 Connection for other components/For outside circulation pump P_o ).
NOTE
Make sure to connect the thermostat wires to the correct terminals, method B should be selected (see "For room
thermostat" in 9.7.6 connection for other components ). To correctly configure the ROOM THERMOSTAT in the FOR
SERVICEMAN mode see 10.7 Field settings/ROOM THERMOSTAT .
NOTE
1
1.1
1.2
1.3
1.4
1.5
1.6
1.7
2
3
Assembly unit Assembly unit Coding Coding
FHL 1…n
8.2
9
10
11
12
12.1
12.2
12.3
13
14
15
16
18
4
6
7
8
8.1
Drain valve
Outdoor unit
Manometer
Pressure relief valve
Expansion vessel
Plate heat exchanger
Air purge valve
Flow switch
P_i: Circulate pump in the unit
Y-shape filter
Stop valve (field supply)
Wired controller
Drain valve (field supply)
Fill valve (field supply)
Balance tank (field supply)
Air purge valve
20
21
17
Floor heating loop (field supply)
Expansion vessel (field supply)
P_o: Outside circulation pump (field supply)
Collector / distributor (field supply)
Domestic hot water tank (field supply)
Air purge valve
Heat exchanger coil
Booster heater
T5: DHW tank temp. sensor
Hot water tap (field supply)
P_d: DHW pump (field supply)
One way valve (field supply)
SV1: 3-way valve (field supply)
Solar energy kit(field supply)
P_s: Solar pump(field supply)
Bypass valve(field supply)
FHL1 FHL2 FHLn
----
----
12.3
12.2
12.1
12.1
2 3
6 7
8.1
8.2
8
9
12
13
14
15
16
10
11
20 21
4
17
1
1.5
1.4
1.2
1.3
1.7
1.6
1.1
17 16