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SSB 6720818454 (2016/02) US
Applications | 49
Wiring diagram for multiple zone with indirect tank (valve for each zone):
Fig. 77
(*) NOTICE: The maximum amp load for each pump is 1
A (with a cosφ 0.7) when 2 or 3 pumps are connected.
For this reason, if the power consumption of each pump is
higher than 84 watt, use a relay as shown in gure.
If just one pump is connected, the maximum amp load of
this single pump is 2 A with a cosφ 0.7. For this reason if
the power consumption of the pump is higher than 168 watt,
use a relay as shown in gure.
Connect the following low voltage connection:
Terminal Number. Device
11-12 Zone relay end switch
9-10 DHW tank sensor or Tank Thermostat (Aquastat)
7-8 Outdoor air sensor (optional)
Connect the following high voltage pin:
Terminal Number. Device
101-102-103 Boiler pump
107-108-109 DHW tank pump
8.2.1 Settings
Set the parameters as indicated in the following table (for the parameter
list see section “5.5 Parameters list”):
No. Description Value Comment
1
Central Heating
Mode
0 Outdoor air sensor not present
1
Outdoor air sensor present. Reset
curve activate
2 Mod Pump Mode 2 Enabled CH pump and DHW pump
35 DHW mode
0 No indirect sanitary water installed
1 Indirect sanitary water with sensor
2
Indirect sanitary water with tank
thermostat
If CH mode is set to 1 and an outdoor air sensor is present, set the reset
curve parameter as follows (to set these values see also section “5.6
Outdoor reset”):
No. Description Value (°F)
19 Design Supply Temp 180
20 Design Outdoor Temp 25
21 Baseline Supply Temp 104
22 Baseline Outdoor Temp 70
23 Design Supply Min Limit 40
24 Design Supply Max Limit 180
25 Warm Weather Shutdn 68
123456789
10 11 12 13 14
CASCADE
LINK
MOD
BUS
Gas
Switch
Out
Door
DHW Tank
Sensor
Room
Thermostat
Supply
Sensor
Zone relay switch
DHW tank sensor
or
Aquastat
Outdoor sensor
(5)
(4)
(1)
101102 103 104 105 106107 108 109
116118117
L
N
L
N
L
N
Boiler
Pump
Pump DHW
120 V Main in
N
L
120 V Neutral
Ground
120 V Line
Boiler pump
DHW tank pump
110111 112
L
N
Alarm
113 114115
L
N
120 V Aux
L
N
Pump CH
N
L
3 Way
(2)
(3)
GND
GND
GND
GND GND GND
GND
Relay (*)
Furnished and
Installed by others
Relay (*)
Furnished
and
Installed
by others
49


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