Product Overview

Burner
Control
Circuit
UC1 Universal Control
Power
Furnace / Boiler / Water Heater
Power Venter,
Draft Inducer
or
Combustion Air
In-Forcer
Tjernlund
Universal Control (UC1)
The single
interlock for
all Tjernlund
mechanical
draft systems
Practical Contractor Benefits
Simplifies
installation
and service,
reduces
inventory
■ Adjustable pre and post purge
■ LED status/diagnostic indicators
■ Selectable voltage avoids false triggering
by electronic burner controls
■ Prover switch check circuit verifies fan
prover switch is open prior to operating
■ Eliminates appliance control circuit
compatibility issues since the UC1 inter-
locks with dry contact, 24 VAC or 115
VAC appliance control systems. Appliance
control circuit voltage can be selected,
eliminating false triggering by burner
check circuits.
■ Simplifies servicing and new installations.
Universal Control can replace any relay or
timer/relay previously installed.
■ Simplifies Tjernlund Power Venter model
selection.
■ Simplifies new installations and service
calls since operation and wiring interlock
problems are diagnosed and displayed
through LED indicators.
■ Reduces liability with prover status check
circuit.
■ Simplifies on-truck inventory.
Superb Performance and Safety Features:
■ Allows installer to position junction box for easy wiring and service.
■ 10-second prover switch delay eliminates
burner start up or wind induced prover
switch short cycling
■ 5 VDC fan prover signal eliminates issues
with switching burner load through prover
switch contacts