15 of 24
©
2006
D 410 - 01/06
20 to 260 V (ac)
2
1
Boil
Dem
Com
Dem
20 to 260 V (ac)
3
2
Com
Dem
DHW
Dem
66
Power
N
L
Prim
P1
4 5
L
N
115 V (ac)
10
9
Boil
P2
L
N
115 V (ac)
Test the Powered Inputs
Boiler Demand
If a boiler demand is used, measure the voltage between the
Boil Dem
and
Com Dem
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
Com Dem
and
DHW 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.
L
N
8
7
DHW
Pmp/Vlv
24 to 230 V (ac)
M
or
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 Pump (Boil P2)
If a boiler pump is connected to the
Boil 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 operates 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 instal-
lation or troubleshooting information supplied with these devices. If the DHW pump or
valve operates correctly, disconnect the power and remove the jumper.
