Carrier 40VM Series Service Manual

11
Fig. 18 —For Heat Recovery Outdoor Unit
Table 9 —List of 500P EEV Valve Opening in Heating Mode
Start and Stop Control of 2000P EEV
When the indoor unit receives any of the following signal:
• Signal to turn off
• Indoor unit error signal
• Indoor unit turns to thermo-off
The EEV’s control uses the following logic:
• If the outdoor unit shuts down without heating capacity requirement:
The EEVs keep the previous opening for three minutes. Then all EEVs conduct 1200P opening (EEVs whose opening is not
equal to zero will close to 0P first, and then open to 1200P).
• If the heating capacity requirement of the outdoor unit is not equal to 0:
The EEVs keep the previous opening for 25 seconds after the indoor unit turns off, and then close to -40P to reset the opening
and open to 224P (Standby).
When the indoor unit receives the signal to turn on, the EEV’s control uses the following logic:
Fig. 19 —For Heat Pump Capacity
Fig. 20 —For Heat Recovery Outdoor Unit
CAPACITY
INDEX
INITIAL OPENING MINIMUM OPENING MAXIMUM OPENING
HEAT PUMP AND
SINGLE PHASE VRF
HEAT RECOVERY
HEAT PUMP AND
SINGLE PHASE VRF
HEAT RECOVERY
HEAT PUMP AND
SINGLE PHASE VRF
HEAT RECOVERY
7~24 400 330 144 120 480 480
30~54 400 330 200 160 480 480
All the
Startup signal
indoor units
open to OP
Heat Recovery Unit
Compressor starts  200 s
Pc  362psi
Pc - Pe  123psi
T2a  89.6°F
Reset, then open OP
Capacity
requirement = 0
Capacity
requirement = 0
First open to 120P for one
minute, and then open to
initial opening for 4
minutes
All the
indoor units
open to 24P
Compressor starts > 200s
Pc > 362 psi
Pc-Pe > 123 psi
T2a > 89.6°F
Heat Pump VRF
Single Phase VRF
Capacity
requirement = 0
Capacity
requirement = 0
Startup Signal
224P standby opening
First open to max. opening
for one minute, and then
open to initial opening for
4 minutes
All the
Startup signal
indoor units
open to OP
Heat Recovery Unit
Compressor starts  200 s
Pc  362psi
Pc - Pe  123psi
T2a  89.6°F
Reset, then open OP
Capacity
requirement = 0
Capacity
requirement = 0
First open to 120P for one
minute, and then open to
initial opening for 4
minutes

Carrier 40VM Series Specifications

General

Brand	Carrier
Model	40VM Series
Category	Air Conditioner
Language	English