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• Do not use unless you know the safe and proper operation of equipment required for installation.
• It is the installers responsibility to ensure that this product is safely installed according to all applicable codes
and standards.
Wiring a Central Heat (CH) Call
The Heatronic 4000 requires a switched external heat call to operate the boiler plant unless calls for heat are
generated through a tekmarNet
be volt free or up to 24 V (ac).
• Connect the CH Call terminals 5 & 6 to a switched heat demand.
• Typical heat calls are from a zone relay box or thermostat.
• A permanent CH call can be created by installing a jumper wire between terminals 5 & 6.
Wiring a DHW Tank (IDHW) Call
If the DHW sensor option is not used, a call for indirect domestic hot water can come from an aquastat connected
to terminals 7 & 8. The DHW Tank Call can be volt free or up to 24 V (ac).
• Connect the DHW Tank Call terminals 7 & 8 to the DHW tank aquastat.
Wiring a Fuel Switch
The Fuel Switch terminals 9 & 10 can receive an input from a switching device that selects what burner is to be used
on applicable boilers that include dual fuel burners. The Fuel Switch device can be volt free or up to 24 V (ac).
• Connect the Fuel Switch terminals 9 & 10 to the output terminals on a fuel switchover device.
Single Stage Boiler Wiring
A single stage condensing or non-condensing boiler is enabled through the TT contacts.
• For Boiler 1 connect Stage 1 terminals 53 & 54 to the boiler TT contacts.
• For Boiler 2 connect Stage 1 terminals 59 & 60 to the boiler TT contacts.
• For Boiler 3 connect Stage 1 terminals 65 & 66 to the boiler TT contacts.
• For Boiler 4 connect Stage 1 terminals 71 & 72 to the boiler TT contacts.
Two Stage Boiler Wiring
A two stage condensing or non-condensing boiler requires two wires for each stage.
• For Boiler 1 connect Stage 1 terminals 53 / 54 & 55 / 56 to the boiler stage 1 & stage 2 contacts.
• For Boiler 2 connect Stage 1 terminals 59 / 60 & 61 / 62 to the boiler stage 1 & stage 2 contacts.
• For Boiler 3 connect Stage 1 terminals 65 / 66 & 67 / 68 to the boiler stage 1 & stage 2 contacts.
• For Boiler 4 connect Stage 1 terminals 71 / 72 & 73 / 74 to the boiler stage 1 & stage 2 contacts.
Heatronic 4000
®
®
device, EMS, BACnet
or Modbus
®
connection. The central heat (CH) call can
24 of 60
Terminals 5, 6
Heatronic
4000
Terminals 7, 8
Heatronic
4000
Terminals 9, 10
Heatronic
4000
Terminals 53 to 72
Heatronic 4000
51 52
53 54
Boi l er 1
+
-
Mod
Sta g e 1 Sta g e 2
T
St age 1
Terminals 53 to 74
Heatronic 4000
51 52
53 54
Boi l er 1
+
Mod
-
Sta g e 1 Sta g e 2
T
St age 1
BTC461503101C | 6720810369 (2018/03)
CH
Call
5
6
DHW
Tan k Ca l
7
8
Fue l
Swi tch
9
10
55 56
T
55 56
T
T
T
St age 2
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