Carrier 80AWH Series, Installation Manual

Page: 15 / 36

15
80AWX- 80AWH
English
Application scheme
Unit description
See fig. 1
Outdoor Unit 1.
Hydronic module 2.
Domestic hot water tank (optional) 3.
Ball valves (field supplied) 4.
Water filter (field supplied) 5.
Collectors (field supplied) 6.
3 way valve (optional) 7.
T1, T2, T3: terminals
C1, C2, C3: thermostats connected to terminals
C: user interface (additional or shifted from the unit) or
thermostat connected to hydronic module
Terminals
Terminals can be of the following types:
floor circuit •
fan coils •
radiators •
low temperature radiators •
Different terminals have different water temperature
requirements.
To ensure comfort, it is suggested not to use, at the
same time, terminals with different water temperature
requirements.
Example: it is possible to use floor circuit for heating and fan
coil for cooling, but using both at the same time (in heating
or cooling) will cause discomfort.
Floor circuit is the recommended terminal, as it ensures the
best energy efficiency.
See fig. 2
Outlet water pipe 1.
Boiler pipes (only models 80AW----M0) 2.
Inlet water pipe 3.
Filling valve 4.
Refrigerant pipes 5.
See fig. 3
User interface (mounted on unit) 1.
Manometer 2.
Water pump 3.
Control box 4.
Main board 5.
See fig. 4
Hydronic module 1.
Wall bracket 2.
Replacement cap for shifted user interface 3.
Hydronic module manual 4.
User interface manual 5.
Terminal blok 6.
Water temperature sensor - LWT 7.
Expansion vessel 8.
Flow switch 9.
Pressure relief valve 10.
Electric heater (not for models 80AW----M0) 11.
Buffer tank (10 lt) 12.
Brazed plate heat exchanger 13.
Water temperature sensor - TWB 14.
Air purge valve 15.
Refrigerant sensor - TC 16.
Room temperature control
Different terminals (T1, T2…Tn) can be placed in a single
room or in multiple rooms.
Each of them can have a thermostat, to stop the terminal
when a certain temperature is reached.
It is possible to control 1 room with a user interface or a
thermostat connected to the unit.
This room should be the one with the highest heating/
cooling requirements.
In this room it is not required to place a thermostat on the
terminal/s.
It is suggested to place a thermostat on terminals placed in
rooms with significantly different thermal requirements.
It is recommended to control the room with the user
interface; this way the control adjusts water temperature
to meet the setpoint and comfort and energy efficiency are
optimized.
If no user interface is used:
if thermostats are used, set climatic curves slightly higher •
in heat mode and slightly lower in cool mode
if no thermostats are used (temperature requirements •
should be similar for all rooms), climatic curves must be
set exactly right for both heating and cooling operation
Box content