Part Number 550-110-641/0605
13
PFG SerieS 7 GaS-Fired Water Boiler — Boiler Manual
Figure 6 Typical wiring – zoning with zone valves
Wiring multiple zones
Refer to zone valve manufacturer’s literature for wiring
and application. A separate transformer is required to
power zone valves. Zoning with circulators requires a
relay for each zone circulator.
Canadian installations – Chain &
s-hook
See illustration below.
The chain and s-hook should be installed
according to this instruction by a qualified
installer/service technician prior to boiler
installation. Please follow steps outlined
below for the installation of the chain and
s-hook.
1. Crimp one side of each s-hook to each end of the chain.
2. Remove the two screws that attach the transformer plate
to the junction box.
3. Remove the transformer relay assembly and drill a 1/8”
hole through the plate as shown below. Do not allow
drill shavings to fall into the boiler jacket or onto any
control.
4. Crimp the s-hook to the 1/8” hole in the transformer
plate. Crimp the other side of the chain to the junction
box lower flange as shown below.
5. Replace the transformer relay assembly on the junction
box and secure with the two screws removed in step 2.
Figure 6 Chain and s-hook installation – Canadian installations only
