General; Electronic Expansion Valve (Eev); Internal Heat Exchanger (Ihe); Circulation Pumps (Cp) - Viessmann PLC VITOCAL 350-HT PRO Service Instructions For Contractors

Control parameter report

General

See page 25.
Parameter
"Max. casing temp"
"Start temp, room vent."
"Stop temp, room ventilation"
"Start temp, casing vent."
"Stop temp, casing ventilation"
"Frost protection (evaporation temp)"
"Limit, refrigerant pre-alarm (ppm)"
"Limit, refrigerant alarm (ppm)"

Electronic expansion valve (EEV)

See page 26.
Parameter
"Evaporator superhtg"
"Min. opening angle EEV"
"Timeout, min. opening angle EEV"

Internal heat exchanger (IHE)

See page 27.
Parameter
"Min sprhtg downstr.of IHE"
"Start opening angle"
"Max. hot gas temp"
"Max. suction gas temp"
"Suction gas temp. increase if evap. temp.
>="
"Suction gas temp increase if condensation
temp >="
"Open IHE valve"
"Close IHE valve"

Circulation pumps (CP)

See page 28.
Parameter
"Adv.runtime, circ.pumps"
"Run-on time, circ. pumps"
(cont.)
Delivered condition
65 °C
35 °C
30 °C
30 °C
25 °C
0 °C
500
950
Delivered condition
6 K
10 %
60 s
Delivered condition
15 K
65 %
120 °C
65 °C
37 °C
60 °C
150 s/%
20 s/%
Delivered condition
00:01:00
00:00:30
Commissioning/service reports
Commissioning Maintenance/
service
Commissioning Maintenance/
service
Commissioning Maintenance/
service
Commissioning Maintenance/
service
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