Operating instructions

25
A. General. Install wiring and ground boiler in accordance
with requirements of authority having jurisdiction, or in
absence of such requirements the National Electrical
Code, ANSI/NFPA 70 and/or CSA C22.1 Electrical Code.
B. Wire Vent Damper (if used).
1. Steam or Water with gravity circulation or tankless
heater.
a. Remove one (1) 7/8" knockout from junction box.
Carefully remove tranformer - avoid undue strain
on wires.
b. Install Vent Damper Harness into top of junction
box.
c. Remove factory installed jumper plug (if so
equipped) from Vent Damper Receptacle. Plug
Vent Damper Harness into Vent Damper
Receptacle. See Figure 31.
a. Remove 7/8" knockout and cover from limit
control.
b. Install Vent Damper Harness into top of limit.
c. Remove factory installed jumper plug from Vent
Damper Receptacle. Plug Vent Damper Harness
into Vent Damper Receptacle. See Figure 31.
d. Install cable clamp around flexible Vent Damper
Harness. Attach to jacket top panel. See Figure
33.
3. Note: After vent damper is installed and operated
through one (1) cycle, the control circuit will operate
only when vent damper is in control circuit.
C. Install thermostat. Locate on inside wall approximately
4 feet above floor. Do not install on outside wall, near
fireplace, or where influenced by drafts or restricted air
flow, hot or cold pipes, lighting fixtures, television, or
sunlight. Allow free air movement by avoiding
placement of furniture near thermostat.
VIII. Electrical
DANGER
Positively assure all electrical connections are unpowered before attempting installation or service
of electrical components or connections of the boiler or building. Lock out all electrical boxes with
padlock once power is turned off.
WARNING
Failure to properly wire electrical connections to the boiler may result in serious physical
harm.
Electrical power may be from more than one source. Make sure all power is off before
attempting any electrical work.
Each boiler must be protected with a properly sized fused disconnect.
Never jump out or make inoperative any safety or operating controls.
Figure 31: Vent Damper Connection Detail
d. Install cable clamp around flexible Vent Damper
Harness. Attach to jacket top panel. See Figure
32.
2. Water with intermittent circulation and without
tankless heater.
Figure 32: Vent Damper Harness to Junction Box