Cooper & Hunter GRS-Cm18/A-M, Руководство по обслуживанию

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CIRCULATING AIR SOURCE WATER HEATER INSTRALLATION
9
2 MAIN LOGIC
1). Control of Compressor
Operating condition of compressor
-
I
.1
a
0
When T
out
≤T_ set- ΔT (5 ) -1, the compressor will start running.
b
0
When T
out
≥T_ set, the compressor will stop running.
c
0
When T_set- ΔT(5 ) -1
2
T
out
2
T_set, the previous running state will remain.
Operating condition of compressor
-
II
.1
a
0
When T
out
≤T_ set- Δ T(5 ) -2, the compressor will start running.
b
0
When T
out
≥T_ set-1, the compressor will stop running.
c
0
When T_set- ΔT(5 ) -2
2
T
out
2
T_set-1, the previous running state will remain.
2). Control of Fan
In heating mode, after the compressor operates and the fan operates at high speed for 30s,
if outdoor ambient temperature T
ambient
≥31
*
, the running outdoor fan will operate at low speed.
if outdoor ambient temperature T
ambient
2
29
*
, the outdoor fan will resume running at high speed.
if outdoor ambient temperature 29
*
≤T
ambient
2
31
*
, the previous running state will remain.
3). Control of Defrosting
+
Defrosting condition: the continuous running time, defrosting interval and pipe temperature all
reach the setting value of defrosting.
,
Defrosting terminal condition: the setting time or pipe temperature reaches the setting value of
ending defrosting.
4). Antifreezing Operation
When outdoor ambient temperature T
ambient
≤1
*
, and T
antifreezing
≤3 lasts for 30s, the water pump
will start up, and the electronic expansion valve will open to corresponding initial step. When
T
antifreezing
≤1
, the fan will start up after the water pump operates for 240s. The compressor will start
up 15s later. As for dual compressors, only the one with shorter running time will start up.