Install Instructions

installation &
operating instructions
Armstrong
Compass H
5
6.0 setting the pump
6.1 pump setting for system type
Note : Optimum energy savings & comfort can be achieved by
careful selection of the correct operation mode (see fig. 11).
Recommended and alternative pump settings are shown below:
auto (underfloor heating and two-pipe (parallel) systems)
auto function observes and adjusts the pump performance
to satisfy the system requirement. The pump adapts to the
system over time, it is recommended to leave the pump in
the auto position at least one week before selecting other
pump settings.
Changing from recommended (auto) to alternative
pump setting:
Heating systems are 'slow' systems that cannot be set to the
optimum operation within minutes or hours.
If the recommended pump setting does not give the desired
comfort in some areas of the building, change the pump setting
to the shown alternative.
See pump settings and pump performance (section 9) for
more details.
speed pressure curve
ok
a
b
c
ok
ok ok
ok ok
radiant heat
system
gas or oil
boiler
circulation
pump
auto
speed pressure curve
auto
speed pressure curve
auto
speed pressure curve
auto
speed pressure curve
auto
speed pressure curve
auto
single zone - constant resistance
recommended alternative
recommended alternative
recommended alternative
multiple zone - variable loads parallel
multiple zone - variable loads in series
image
system
type
recommended
setting
alternative
setting
a
Under floor
heating
(Radiant single
zone)
auto
Highest constant-pressure
curve (pc4)* or
Lowest constant-pressure
curve (pc3)*
b
Two-pipe
(parallel)
systems
auto
Highest proportional-
pressure (pc2)*
c
One-pipe
(series)
systems
Lowest proportional-
pressure curve (pc1)*
Highest proportional-
pressure (pc2)*
* See pump settings and pump performance (section 9).
position description
6 Constant curve, speed ii
7 Constant curve, speed iii
8 Analog input
fig. 11 Recommended pump setting for dierent system type