Tjernlund SS2 SideShot with UC1 Universal Control (Version X.06) 8504105 Rev C 07/05 User Manual

Page 7

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SS2 WITH INTEGRAL UC1 UNIVERSAL CONTROL BOARD FEATURES

# 1.

Power supplied by board. Do not supply power to this area or control damage may result.

# 2.

Do not supply power to the appliance interlock block with the call selector in the “DRY” position.
Control damage may result if power is supplied.

# 3.

Circuit protection must be provided by the installer. 16 Amps is the maximum current allowed for this device at terminal L.

V

A 15 Amp circuit breaker is recommended.

V

ETI

LED STATUS & FAULT INDICATORS

LED INDICATOR LIGHTS
LED #1 (Amber)

Appliance call for heat.

LED #2 (Blue)

Safety circuit through P1 & P2 (SS2 Limit & Fan Prover). Indicates SS2 Limit & Prover are closed during run cycle.
Burner circuit is energized with Interlock Relay contact closure from terminal 3 to 4.

LED #3 (Green)

Power switched to SS2 motor & Cooling Fan from L to MTR & M.

LED #4 (Red)

Status / Fault indicator.

LED #5 (Red)

Used as a status indicator.

LED #6 (Red)

115 VAC power supplied to board.

LED STATUS INDICATORS
LED #4 & #5 (Red) Flashing Alternately = Venter in Pre-purge. (Pre-Purge options 0, 5, 20, 35 seconds)

LED #4 & #5 (Red) Flashing in Unison = Venter in Post-Purge. (Post-Purge options 0, 30 seconds or 1, 2, 4, 8, 16 minutes)

LED #4 Flashing Continuously*

= Fan Prover opened for more than 10 seconds during burner cycle.

(Venter will run for 10 minutes, attempting to make Fan Prover)

LED #5 (Red) Flashing Intermittently

= With no call for heat, flashes 3 seconds on / 3 seconds off if microcontroller is working properly.

LED 1 (AMBER)
LED 2 (BLUE)
LED 3 (GREEN)
LED 4 (RED)
LED 5 (RED)

LED 6 (RED) POWER LED

DRY

24 V

115 V

APPLIANCE
INTERLOCK

RELAY

VENTER

MOTOR

RELAY

A B 1 2 3 4 L N

J1 J2 XL XN

P1 P2 C GND F

(1 9)

N M MTR

4

C, GND, F AUXILIARY DEVICE
COMMUNICATION TERMINALS
2 mA @ 5VDC. For Tjernlund MAC1E or
MAC4E auxiliary devices. SEE WARNING # 1.

P1 - P2 SAFETY CIRCUIT
TERMINALS
1 mA @ 5VDC.
SEE WARNING # 1.

DIP SWITCH SETTINGS
Pre-Purge (1-2)
Post-Purge (3-8)
Prover status check (9)
See “Pre / Post Purge &
Prover Status Check Dip
Switch Settings”.

LED STATUS LIGHTS
See “LED Status & Fault
Indicator Section” for details.

APPLIANCE CALL
VOLTAGE SELECTION

Place RED voltage jumper in
proper location based on
appliance call interlock volt-
age. SEE WARNING # 2.

IMPORTANT

J1- J2 CALL
JUMPER
Used when the call signal is
used as the “proven” return
signal to the appliance. See
wiring section for details.

APPLIANCE INTERLOCK
TERMINAL BLOCK (A-B, 1-4)
A - B
- Dry Contact call. 3 mA @ 5VDC.

SEE WARNING # 1.

1 - 24 or 115 VAC intercepted call.

IMPORTANT: RED voltage jumper must
match intercepted call voltage.

2 - 24V common or 115V Neutral.
3 - Common terminal to appliance relay con-

tacts. IMPORTANT: J1-J2 jumper routes
call voltage at terminal 1 to 3. Remove
J1-J2 jumper if a different voltage source is
provided to terminal 3.

4 - Normally open terminal of appliance relay.

Will be energized from terminal 3 if safety
circuit is “proven”.

L / N - 115 VAC POWER
SUPPLY BLOCK
115 VAC / 50-60 Hz
Circuit protection provided by installer.
SEE WARNING # 3.

MTR & M LOAD TERMINALS
FROM VENTER MOTOR RELAY
Used to drive SS2 Motor & Cooling fan.
1 HP MAX LOAD across terminals MTR & M / N.

XL / XN AUXILIARY DEVICE
POWER TERMINALS
115 VAC - Maximum of 0.15 Amps.
Only connect to Tjernlund auxiliary devices.
SEE WARNING # 1.

APPLIANCE INTERLOCK
RELAY
1 HP MAX LOAD across
terminals 3 & 4.

VENTER MOTOR RELAY
1 HP MAX LOAD from
terminals L to MTR & M.

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