11
Operation, cooling and hydraulic diagram, heat pump unit YLHA PLUS 20 and 27
SAFETY/CONTROL DEVICES
A
High pressure switch
B
Low pressure switch
E
Condensing unit temperature sensors
(fan speed setting and display)
F
Water outlet temperature sensor
(antifreeze, setting and display)
G
Water intake temperature sensor
(setting and display)
COMPONENTS
1
Tandem compressor
2
Air cooled condenser
3
Filter dryer
4
Liquid sight glass
5
Expansion valve
6
Heat exchanger
7
Exchanger antifreeze heater
8
Globe valve (20 and 27 only)
9
4-way valve
10
Check valve
11
Liquid receiver
12
Automatic air bleed
13
Expansion vessel
14
Relief valve
15
Water pump
16
Flow switch
17
Drain connection
18
Water filter (not inside the unit)
Pipe connection with Schrader
valve
For units with hydro kit only
E
3
4
5
10
7
10
5
8
8
2
9
ON
P
1
A
B
P
11
6
16
13
12
17
WATER
OUTLET
F
14
G
WATER
INTAKE
15
18
Содержание YLCA Series
Страница 2: ......
Страница 4: ......
Страница 64: ...64 Units 12 and 15 Units 20 and 27 2 1 4 3 C2 LOCATION OF CONDENSER C3 LOCATION OF CONDENSER 2 3 1 4 C2 C3...
Страница 68: ...www johnsoncontrols com...