Camus Hydronics DFH500, Инструкция по установке, эксплуатации и обслуживанию

Страница: 27 / 53

24
Mode 2 is intended for hydronic heating based on PID logic.
The set-point for supply water sensor S3 is pre-set to 180°F
and the auto re-set limit is set to 230°F. The supply sensor
set-point can be adjusted, however the limit is fixed. In
addition to the auto reset limit the factory installs a manual
re-set limit set to 250°F. The control turns on the appliance
pump and stages the appliance to the set-point target
temperature at the
system
temperature whenever an
external heat demand is present. Once the last appliance
stage turns off and the heat demand is still present, the
control then operates the appliance pump based on the
purge feature. In this case, it is imperative that the system
pump operates continuously in order to provide constant
circulation past the system sensor. The appliance pump
then turns back on with the first stage of the appliance. If
the heat demand is removed, the appliance is turned off
and the control operates the appliance pump P1 based on
the purge feature.
Mode 3 is intended for domestic water heating. The set-
point for inlet water control is pre-set to 140°F and the auto
re-set limit is set to 200°F. The inlet set-point can be
adjusted, however the limit is fixed. In addition to the auto
reset limit the factory installs a manual re-set limit set to
210°F. The control turns on the appliance pump and stages
the appliance to maintain set-point target temperature at
the
appliance
inlet temperature. An internal demand is
generated from the DHW sensor which could be placed in
the storage tank while the external heat demand is
permanently wired or through a timer. Once the DHW tank
is satisfied (internal demand is removed), the control turns
off the appliance and operates the appliance pump based
on the purge feature.
Mode 4 is intended for hydronic heating. The set-point for
inlet water control is pre-set to 180°F and the auto re-set
limit is set to 230°F. The inlet set-point can be adjusted,
however the limit is fixed. In addition to the auto reset limit
the factory installs a manual re-set limit set to 250°F. The
control turns on the appliance pump and stages the
appliance to maintain outdoor reset target temperature at
the
appliance
inlet sensor S2 whenever an external heat
demand is present. Once the external heat demand is
removed, the control turns off the appliance and operates
the appliance pump based on the purge feature.
Mode 5 is intended for hydronic heating. The set-point for
inlet water control is pre-set to 180°F and the auto re-set
limit is set to 230°F. The inlet set-point can be adjusted,
however the limit is fixed. In addition to the auto reset limit
the factory installs a manual re-set limit set to 250°F. The
control turns on the appliance pump and stages the
appliance to maintain outdoor reset target temperature at
the
system
sensor S3 whenever an external heat demand
is present. Once the last appliance stage turns off and the
heat demand is still present, the control then operates the
appliance pump based on the purge feature. In this case, it
is imperative that the system pump operates continuously
in order to provide constant circulation past the system
sensor. The appliance pump then turns back on with the
first stage of the appliance. If the heat demand is removed,
the appliance is turned off and the control operates the
appliance pump based on the purge feature.
Mode 6 is intended for multiple appliance application and all
stages are closed at all times. In essence there is no
operator at the appliance. A removable jumper is provided