Pre-Start And Start-Up - Carrier WeatherMaker 50FCQ 04 Series Installation Instructions Manual

Filter
Drier
DFT 1
Acutrol
Outdoor Coil
Fig. 59 — 50FCQ 04-06 Piping Schematic — One-Stage Cooling
Filter
Drier
DFT 1
Acutrol
Outdoor Coil
Fig. 60 — 50FCQ 07 Piping Schematic — Two-Stage Cooling, Single Circuit
Table 21 — Cooling Mode (each circuit)
COMPONENT
Reversing Valve
Check Valve A
Check Valve B
Check Valve C
Check Valve D
Table 22 — Heating Mode (each circuit)
COMPONENT
Reversing Valve
Check Valve A
Check Valve B
Check Valve C
Check Valve D
LPS/LOC
B
A
Accurater
LPS/LOC
B
A
C
Accurater
STATUS/POSITION
Energized
Closed
Open
Closed
Open
STATUS/POSITION
De-energized
Open
Closed
Open
Closed
Cooling Liquid Line
D
HPS
C Strainer
Heating Mode Liquid Line
Cooling Liquid Line
D
HPS
Indoor Coil
Strainer
Heating Mode Liquid Line
Table 23 — Defrost Mode
COMPONENT
Defrost Thermostat
Outdoor Fan(s)
Reversing Valve
Check Valve A
Check Valve B
Check Valve C
Check Valve D

Pre-Start and Start-Up

This completes the mechanical installation of the unit. Refer to the
unit's Service Manual for detailed Pre-Start and Start-Up instruc-
tions. Download the latest versions from HVAC Partners
(www.hvacpartners.com).
49
Acutrol
Indoor Coil
TXV
STATUS/POSITION
Closed
Off
Energized
Closed
Open
Closed
Open