Tjernlund SS2 SideShot with UC1 Universal Control (Version X.02) 8504105 Rev 07/02 User Manual
Page 12
11
ELECTRICAL WIRING
All wiring from the SS2 to the appliance must be appropriate Class 1 wiring as follows: installed in rigid metal conduit, intermediate
metal conduit, rigid non-metallic conduit, electrical metallic tubing, Type MI Cable, Type MC Cable, or be otherwise suitably protected
from physical damage. Note: We recommend the use of flexible conduit for connections to the SS2 to allow for slide out servicing
feature of venter assembly.
SS2 SEQUENCE OF OPERATION WITH INTEGRAL UC1 UNIVERSAL CONTROL:
Control signal from thermostat, aquastat, primary control or gas valve is intercepted and routed to terminal “1” on UC1 terminal
strip. When terminal “1” is energized with either 24 VAC or 120 VAC, the SS2 motor and cooling fan are energized. After draft is
established, the Fan Proving Switch closes within 5 to 10 seconds energizing terminal “4”, which completes the circuit allowing
burner to fire. NOTE: If a venter pre-purge is selected, the burner will not fire until the pre-purge time is finished. The SS2 will
continue to run after the burner has finished firing for the set post-purge time cycle. The SS2 is set for a 2 minute post-purge time
period from the factory. See “Pre / Post-Purge Settings” on page 5 for details.
The "1" input terminal on the SideShot can accept either a 24 VAC or 120 VAC control signal. IMPORTANT: The RED
jumper must be positioned based on appliance interlock voltage. For most furnace applications it may be easier to interlock with
the 24 VAC thermostat circuit. For most boiler applications it may be easiest to interlock with the 120 VAC aquastat or primary
control circuit to the burner motor. Choose the interlock method that best fits your application.
The steps listed under each diagram are intended as a supplement to the diagram. Wiring colors or designations may vary by
manufacturer. If you are unable to wire the SS2 as outlined in these instructions, call Tjernlund’s Customer Service Department
toll free at 1-800-255-4208 for assistance.
IMPORTANT: To reset faults, verify fault by checking the LEDs and then remove call for heat.
SS2 WITH INTEGRAL UC1 UNIVERSAL CONTROL
(THE SS2 MOTOR, COOLING FAN, LIMIT & PROVER ARE ALL FACTORY PREWIRED)
IMPORTANT:
RED JUMPER POSITION MUST BE THE SAME
AS APPLIANCE INTERLOCK VOLTAGE.
CALL
RELAY
INTERLOCK
COMMON
NEUTRAL
PRODUCTS,
INC.
1 H.P. MAX @ 115 VAC
SUPPLY
115 VAC
50/60 Hz
R
TJERNLUND
9183006
NO
MTR
M
MOTOR
RELAY
N
COM
NO
115 VAC
24 VAC
1303961-1
DO NOT SUPPLY VOLTAGE
TO "A" OR "B".
DO NOT SUPPLY POWER!
5 VDC BOARD-GENERATED POWER
HOT
24 VAC
USER-PROVIDED
CALL SWITCH
LINE
OR
"DRY"
OR
115V
J2
COM
24V
DRY
LEGEND:
115 VAC
5
POST-PURGE SETTINGS
FOR TJERNLUND
TO P1, P2, C, GND
AUXILIARY
OR F. DOING SO
WILL DAMAGE THE
CONNECT POWER
OPEN PROVER OPTION
(9)
(3 - 8)
9
7
8
6
CONTROL.
DEVICES. DO NOT
F
GND
ON
LED1
PRE-PURGE SETTINGS
LED5 LED4
LED2
LED3
(1 - 2)
2
4
3
1
C
P1
P2
J1
XL
XN
115 OR 24 VAC FROM CALL JUMPER
OR USER-PROVIDED VOLTAGE
FROM TERMINAL 3 TO 4 WITH CALL
JUMPER REMOVED
K2
K1
APPROVED
MAC1E OR MAC4E
JUMPER
RED
RED
GREEN
GREEN
AMBER
SS2 PROVER
SS2 LIMIT
COOLING
FAN
SS2
SS2
MOTOR
WARNING: Disconnect power supply from the SS2 and heating equipment when making wiring connections and servicing the
SS2. Failure to do so may result in personal injury and/or equipment damage. LED #5 (RED) should be off with
power removed.