6
Midco International Inc.
8471 95
Part 1 Installation
- Con
fi
rm that the polarity is correct:
120V Burner Models:
for
Honeywell control
- hot wire to strip terminal 10, neutral 6—and that the neutral
line is not subject to induced low voltage (check 6 to 11 earth ground)
(refer to Figures 4A and 4B) ...
for
Siemens control
- hot wire to strip terminal 3, neutral 6—and that the neutral line is
not subject to induced low voltage (check 6 to 1 earth ground)
(refer to Figures 4C and 4D) ...
24V Burners Models:
Con
fi
rm that the polarity is correct—hot wire to strip terminal L1, neutral L2—and that the
neutral line is not subject to induced low voltage (check L2 to earth ground) from other
equipment, as that can cause the Ignition Control Module to malfunction.
(refer to Figures 4E) ...
... from other equipment, as that can cause the Ignition Control Module to malfunction.
-
Each installation must include suitable safety and limit controls.
-
The current draw of the VA Series varies by model and is listed in the speci
fi
cations section,
Table 1.
__________________________________________
CAUTION: Label all wires prior to disconnection when servicing controls. Wiring
errors can cause improper and dangerous operation. Verify proper operation after
servicing.
WARNING: Electrical Shock Hazard. Can cause severe injury, death or equipment
damage.
Most of the components have been pre-wired. There are a few things that the installer has to wire
to integrate the burner into the system. Refer to Figure15 for the component’s location inside the
control box.
1.
Main 120V power supply to the burner:
Locate the terminal strip inside the control box.
There are three wires that need to be connected:
120V Burner Models:
for
Honeywell control
- 10 (Black), 6 (White), and 11 (Green) (refer to Figures 4A and 4B).
for
Siemens control
- 120V (On O
ff
switch), 8 (Neutral), and 1 (Ground) (refer to Figures
4C and 4D).
24V Burner Models:
L1 (Black), L2 (White), and G (Green). (refer to Figures 4E)
Note: For 240 V versions, refer to the wiring diagram speci
fi
c to your burner for main power wiring
instructions. Refer to the speci
fi
cation label located on the control box door to determine whether
your burner requires 120 or 240 VAC power.
2.
Modulation signal input (2-10VDC):
Connect the signal input wires from the temperature
controller to the appropriate terminals on the terminal strip. There are two wires that need to be
connected:
120V Burner Models:
for
Honeywell control
- positive 13 (+) and 14 negative (-) (refer to Figures 4A and 4B).
for
Siemens control
- positive 10 (+) and 9 negative (-) (refer to Figures 4C and 4D).
24V Burner Models:
positive (+) and negative (-) (refer to Figures 4E)
3.
Main gas solenoid valve wiring:
Connect the main gas valve wires from the gas valves to the
appropriate terminals on the terminal strip. There are three wires that need to be connected:
120V Burner Models:
for
Honeywell control
- 2 (Blue), 7 (Blue/White) and 12 (Green) (refer to Figures 4A
and
4B).
for
Siemens control
- 8 (Blue), 5 (Blue/White) and 1 (Green) (refer to Figures 4C and 4D).
24V Burner Models:
L (Blue) N (Blue/White) and G (Green). (refer to Figures 4E)
4.
Call for Heat:
The call for heat circuit should be wired between:
for
Honeywell control
- terminals 8 and 15 (refer to Figures 4A and 4B).
for
Siemens control
- terminal 3 to Siemens X5-03 1 (refer to Figures 4C and 4D).
The switch should be capable of handling the full current load of the burner.
5.
(Optional) Gas pressure switch and proof of closure wiring:
If applicable, connect the
wires from the gas pressure switches and/or proof of closure switch to the corresponding terminals
inside the control box. Refer to the wiring diagram inside the control box door for additional
information.
A - Safety
Continued
V Electrical
Continued
B - Wiring
Instructions
!
!
