CONTROLS
UC1
Universal Control |
The UC1 is the new standard
interlock control for Tjernlund's full line of Fixed Speed Power
Venters, Draft Inducers and Combustion Air In-Forcers. It can be
interlocked with virtually any burner control circuit. Features
include: adjustable pre & post purge, LED status / diagnostic
indicators, 10 second prover switch delay to avoid burner start
up and wind induced short cycling. Interlocks with any 24-120
VAC burner control circuit and also includes “dry” contact
actuation option. Selectable voltage eliminates false activation
by burner control circuits. After each burner cycle the UC1
will continue to operate in post-purge mode to allow the venter
to purge the heater and vent of residual flue gases. A factory
post-purge time is set at 2 minutes and is adjustable up to 16
minutes.
The
UC1 Universal control is standard in the following models:
HSJ, HS1,
HS2, HS3, HS4, HS5
SS1, SS1C,
SS1R, SS2
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MAC1E
Multiple Appliance Control (Compatible with UC1 Universal
Control only) |
The MAC1E Appliance Control is used
in conjunction with the UC1 Universal Control to easily
interlock up to one additional 24 VAC , 115
VAC
or millivolt controlled appliance with
Fixed Speed
Auto-Draft Venters, Power Venters,
Draft Inducers, or In-forcers. It activates the Venter through
its connections to the UC1 and in turn relies on the UC1 Fan
Prover safety circuit (P1 & P2) to allow its interlocked
appliances to operate. Any pre/post-purge settings on the UC1
will be defaulted to the MAC1E. The MAC1E puts an end to
difficult and costly job site wiring nightmares. Circuit board
housed in oversized 18 gauge electrical box with multiple
knock-outs for easy wiring connections.
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MAC4E
Multiple Appliance Control (Compatible with UC1 Universal Control only)
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The
MAC4E Multiple Appliance Control is used in conjunction with the UC1
Universal Control to easily interlock up to 4 additional 24 VAC, 115
VAC
or millivolt controlled appliances with
Fixed Speed Auto-Draft
Venters, Power Venters, Draft Inducers, or
In-forcers. It activates the Venter through its connections to the UC1
and in turn relies on the UC1 Fan Prover safety circuit (P1 & P2) to
allow its interlocked appliances to operate. Any pre/post-purge
settings on the UC1 will be defaulted to the MAC4E. The MAC4E puts an
end to difficult and costly job site wiring nightmares. Circuit board
housed in oversized 18 gauge electrical box with multiple knock-outs for
easy wiring connections. |
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Gas Water Heater
Interlock Kits |
WHKE MILLIVOLT
INTERLOCK KIT FOR USE WITH UC1 CONTROL
For use with the UC1 Universal
Control, MAC1E or MAC4E auxiliary controls. The WHKE gas pressure
switch actuates the Inducer /Venter through the A-B dry contacts on UC1,
MAC1E or MAC4E. The Linear Limit switch disables the heater in the
event of a venting malfunction. Includes JA1 thermocouple junction
adapter. To interlock millivolt water heater(s) only with a UC1
controlled Inducer / Venter add a WHKE for each millivolt heater. To
interlock a millivolt water heater and one 24/115 VAC furnace or boiler
with a UC1 controlled Inducer / Venter, add a WHKE and a MAC1E. |
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EVERYTHING NEEDED TO CONFORM WITH NATIONAL MECHANICAL CODES
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Vents/Chimneys utilizing In-Line Draft Inducers
must be vertically terminated above the roof line.
Fan Prover Safety Interlock
Model PS1505
To satisfy national mechanical codes for oil and gas installations, Draft
Inducers must be properly interlocked with burner circuits. The PS1505 Fan
Proving Switch monitors pressure within the Inducer housing to verify Inducer
operation. Used in conjunction with the UC1 Universal Control, it assures
compliance with codes and simplifies electrical interlock with all 24/115 VAC
burner circuits. The PS1505 is not compatible with millivolt gas valves.
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