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Testing the HP Loop Pump ----------------------
Activate the User Test sequence and pause at Step 10 by
pressing the Item button once the HP Loop pump turns on.
Using an electrical meter, measure the voltage between the
HP Loop pump and a neutral. The voltage should measure
between 103.5 V (ac) and 126.5 V (ac).
Testing the Heat Pump Stage 1 Contact ---------
Activate the User Test sequence and pause at Step 11 by
pressing the Item button once the Y1 contact turns on. Using
an electrical meter, measure for continuity between the Y1
and Rc1 terminals.
Testing the Heat Pump Stage 2 Contact ---------
Activate the User Test sequence and pause at Step 12 by
pressing the Item button once the Y2 contact turns on. Using
an electrical meter, measure for continuity between the Y2
and Rc2 terminals.
Testing the Backup Contact ---------------------
Activate the User Test sequence and pause at Step 13 or Step
18 by pressing the Item button once the boiler stage 1 turns
on. Using an electrical meter, measure for continuity over the
Backup terminals.
Testing the Transfer Pump ----------------- -----
Activate the User Test sequence and pause at Step 14 by
pressing the Item button once the Transfer pump turns on.
Using an electrical meter, measure the voltage between the
Transfer pump and a neutral. The voltage should measure
between 103.5 V (ac) and 126.5 V (ac).
Max Heat
The control has a function called Max Heat. In this mode, the
control turns on and operates the system up to the maximum
set temperatures as long as there is a call for heat. Use this
mode to run the circulators during system start-up and com-
missioning, and purging air from the piping. This function is
useful when drying sheet rock and paint in the building.
To enable Max Heat, enter the Toolbox Menu and find Max
Heat. Use the up arrow to select 'On'.
•
When a space heating call is present, the heat pump and
backup will run to maintain the target at the Design temperature.
(One can purge the system using this test and leave the heat
pump and backup un-powered. This will prevent heat from
entering the system during the purge.)
© 2011
D 406 - 12/11
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Testing the DHW Pump --------------------------
Activate the User Test sequence and pause at Step 16 by
pressing the Item button once the DHW pump turns on. Using
an electrical meter, measure the voltage between the DHW
pump and a neutral. The voltage should measure between
103.5 V (ac) and 126.5 V (ac).
Testing the Boiler System Pump --------- --------
Activate the User Test sequence and pause at Step 17 by
pressing the Item button once the boiler system pump turns
on. Using an electrical meter, measure the voltage between
the boiler system pump and a neutral. The voltage should
measure between 103.5 V (ac) and 126.5 V (ac).
Testing the Boiler Modulating Output ---- -- -- --- -
This test applies for modulating boilers only.
Active the User Test sequence and pause at Step 18 by
pressing the Item button once the boiler stage 1 turns on.
Using an electrical meter, measure for either a 5 V (dc) or 12
mA signal. The Boil Type setting selects whether the signal
is V (dc) or mA.
Testing the DHW Call -------------------- - -- -- -- -
Remove all wires from the DHW Call terminals. The control
display should show no DHW Call. Reconnect wires. Then
apply either a short circuit or 24 V (ac) over the DHW Call
terminals. The control should now show a DHW Call.
Testing the Setpoint Call ----------------- -- -- - --
Remove all wires from the Setpoint Call terminals. The
control display should show no Setpoint Call. Reconnect
wires. Then apply either a short circuit or 24 V (ac) over
the Setpoint Call terminals. The control should now show
a Setpoint Call.
•
When a DHW Call or Setpoint Call is present, the boiler
will operate at the DHW exchange or Setpoint temperature
settings.
•
WWSD and DHW Priority are disabled during Max Heat
mode.
•
Cooling is disabled during Max Heat mode.
•
When Max Heat is on the display will show 'Max Heat
Test'.
•
Max Heat will automatically turn off after 24 hours.
To cancel Max Heat, go to Max Heat in the Toolbox menu and
use the down arrow to select 'Off'.
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