© 2010 D 270 - 08/10
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Test The Power Supply
Make sure exposed wires and bare terminals are not in contact with
other wires or grounded surfaces. Turn on the power and measure
the voltage between the
Power L
and
Power N
terminals (5 and 6)
using an AC voltmeter, the reading should be between 103.5 and
126.5
V
(ac).
Test the Powered Inputs
Boiler Demand
If a boiler demand is used, measure the voltage between the
Boil Demand
terminals (1 and 2). When the boiler demand device
calls for heat, between 20 and 260
V
(ac) should be measured at the
terminals. When the boiler demand device is off, less than 5
V
(ac)
should be measured.
DHW Demand
If a DHW demand is used, measure the voltage between the
DHW Dem
and the
Com Dem
terminals (2 and 3). When the DHW
demand device calls for heat, between 20 and 260
V
(ac) should be
measured at the terminals. When the DHW demand device is off,
less than 5
V
(ac) should be measured.
TEST THE OUTPUTS
Primary Pump (Prim P1)
If a primary pump is connected to the
Prim P1
terminal (4), make sure that power to the terminal block is off and install a jumper
between the
Power L
and
Prim P1
terminals (5 and 4). When power is applied to the
Power L
and
Power N
terminals (5 and 6),
the primary pump should start. If the pump does not turn on, check the wiring between the terminal block and pump and refer to
any installation or troubleshooting information supplied with the pump. If the pump operates properly, disconnect the power and
remove the jumper.
Boiler Pmp P2
If a boiler pump is connected to the
Boiler Pmp P2
terminals (9 and 10),
make sure that power to the terminal block is off and install a jumper
between the terminals. When power is applied to circuit, the boiler
pump should start. If the pump does not turn on, check the wiring
between the terminal block and pump and refer to any installation or
troubleshooting information supplied with the pump. If the pump oper-
ates properly, disconnect the power and remove the jumper.
DHW Pump Or Valve (DHW Pmp / Vlv)
If a DHW pump or DHW valve is connected to the
DHW Pmp / Vlv
terminals (7 and 8), make sure the power to the pump or valve circuit
is off and install a jumper between those terminals. When the DHW
circuit is powered up, the DHW pump should turn on or the DHW valve
should open completely. If the DHW pump or valve fails to operate,
check the wiring between the terminals and the pump or valve and refer
to any installation or troubleshooting information supplied with these
devices. If the DHW pump or valve operates correctly, disconnect the
power and remove the jumper.
6
Power
5
V
103.5 to 126.5 V (ac)
N
L
20 to 260 V (ac)
2
1
Boil
Dem
Com
Dem
20 to 260 V (ac)
3
2
Com
Dem
DHW
Dem
10
Boiler
9
Pmp P2
L
N
24 to 230 V (ac)
8
DHW
7
Pmp/Vlv
L
N
24 to 230 V (ac)