Finned copper tube gas boilers & water heaters – Boiler Manual
27
RBI HEATNET FIELD WIRING TO TERMINAL BLOCK
NOTES:
1. Remove jumper “A” when using a low water
cutoff interlock.
2. For multiple boilers utilizing a system air damper
when in a master/member configuration consult
factory or reference wiring diagram 42-0501
sheet 3 for wiring connections.
3. For single boilers or multiple boilers with
individual dampers connect the end proving
switch to main terminal block 15 and 16.
Terminals 17 and 18 provide 120V power to the
damper motor.
4. There are two methods in which a 4-20mA
signal can be used to control HeatNet equipped
boilers.
Method 1
A 4-20mA signal can be used to directly
modulate each boiler from a remote panel or
building management system. On multiple
boiler installations, there is no communication
between boilers, no HeatNet system sensor;
therefore no master/member relationship exists.
(Use Menu: Setup: Setpoints: Setpoint Source:
Auto)
Method 2
A 4-20mA signal can be used to change
the setpoint temperature the HeatNet is
maintaining. This can be used on single
or multiple boilers with a master/member
relationship. (Use Menu: Setup: Setpoints:
Setpoint Source: 4-20, then set the parameters
for the temperature and boiler start point.)
5. The ‘local’ pump relay in the control panel is
rated for 1 hp, 1Ø motors. For larger or 3Ø
reference factory wiring diagram.
Figure 23
