Installation - Field Controls WMO-1 Manual

INSTALLATION

Mounting in the vent pipe
SEE THE APPLIANCE MANUFACTURER'S INSTRUCTIONS FOR THE SPECIFIC LOCATION.
IF THE APPLIANCE MANUFACTURER DOES NOT SPECIFY A LOCATION, REFER TO FIGURE 1.
1. Drill or pierce a clean hole (about
2. The heat transfer tube must have the fiber gasket installed against the mounting plate before attaching the
unit to the vent pipe.
3. Insert the heat transfer tube with gasket into the
4. Secure the assembly to the vent pipe with a minimum of 4 sheet metal screws. The channel must be
mounted horizontally, unless specified differently by the appliance manufacturer. (See Figure 1)
CAUTION: Disconnect electrical power supply to the appliance when wiring the blocked vent switch.
WARNING:
Switch connection channel must be mounted horizontally, unless specified differently by the
appliance manufacturer.
IF THE APPLIANCE MANUFACTURER DOES NOT SUPPLY A WIRING DIAGRAM, REFER TO DIAGRAM A OR B.
Wiring Instructions
5. Wire the blocked vent switch in series with the limit control circuit to the primary control or as an optional
location in series with the orange wire from the primary control to the burner motor. (See Diagram
A and B) Route all wiring with an acceptable wiring enclosure in accordance with the current CSA
C22.1 Canadian Electrical Code Part 1 and any other applicable federal, provincial, and local code
requirements. For installations in the USA, all wiring shall be in accordance with the National Electrical
Code and applicable local codes.
6. The following are typical wiring diagrams. Read and follow the appliance manufacturer's instructions and
wiring diagram.
⁄ " diameter) in the vent pipe near the appliance outlet. (See Figure 1)
3
4
FOLLOW THE APPLIANCE MANUFACTURER'S WIRING DIAGRAM.
⁄ " diameter hole placed in the vent pipe during step 1.
3
4
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Figure 1