T
2
3
4
5
5
Y/W/G/W2/Y2/G2/W3/Y3 OUTPUTS ARE 24VAC @ 1A. ONLY CONNECT THE OUTPUTS
REQUIRED FOR YOUR SYSTEM. PROVIDE PROPERLY SIZED RELAYS/CONTACTORS
AS NEEDED.
ON HEAT DEMAND (W) WILL ENERGIZE THE PUMP(S) AND/OR VALVE(S).
(W2) IS OPTIONAL AND REQUIRES A BOILER SUPPLY WATER TEMPERATURE
PROBE. IF A SUPPLY WATER TEMPERATURE PROBE IS BEING USED, ENABLE
BOILER CONTROL WHEN CONFIGURING THE Z8. WITH BOILER CONTROL
ENABLED, THE Z8 WILL MONITOR THE LEAVING HOT WATER TEMPERATURE AND
WILL WAIT UNTIL THE TEMPERATURE IS WITHING A CONFIGURABLE RANGE
BEFORE ENERGIZING (W).
POWER SUPPLY. PROVIDE A DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED. POWER TO EQUIPMENT IS 24VAC.
MULTIPLE TRANSFORMERS CAN BE USED. SIZE TRANSFORMERS AS NEEDED.
(OPTIONAL) INSTALL A PELICAN TA1 AND A 10K TYPE 2 TEMPERATURE PROBE
DESIGNED AND RATED TO READ THE SUPPLY WATER TEMPERATURE OF THE
BOILER. TEMPERATURE DETECTION RANGE -20 DEG. F TO 180 DEG. F. USE THE T3
TEMPERATURE INPUT INSTEAD OF A TA1, UNLESS THIS Z8 IS CONTROLLING AN
ECONOMIZER.
1
1
!
27
Pressure
T
1
T
2
T
3
DATA
COMMONS ARE INTERNALLY
INTERCONNECTED
Y
W
G
W2
Y2
G2
W3
Y3
C
R
D
S1
S2
C
A1
C
A2
C
R
D
C
24VAC
HIGH
LOW
L2
L1 (HOT)
TRANSFORMER
(OPTIONAL)
PELICAN TEMPERATUREAND ALARM SENSOR (TA1)
WITH A BOILER SUPPLY WATER
10K TYPE II TEMPERATURE SENSOR
(*USE THE T3 TEMPERATURE INPUT INSTEAD OF ADDING
A TA1, UNLESS THIS Z8 IS CONTROLLING AN ECONOMIZER.)
RETURN
AIR
SUPPLY
AIR
Boiler Wiring Guide
BOILER PUMP AND HOT WATER VALVE RELAY
(OPTIONAL) BOILER ENABLE RELAY
The following wiring diagram is for energizing a boiler.
Fig. 22
2
3
5
(OPTIONAL)
BOILER
SUPPLY
WATER
TEMP.
4
6
*OUTSIDE
AIR
3
5
3
IF USING OPTION AND FOLLOW
CONFIGURATION OPTION ON PAGE 32 - BOILER
CONTROL. DO NOT ENABLE BOILER CONTROL IF
NO USING OPTION AND FROM ABOVE.
T1/T2/T3 ARE 10K TYPE 2 TEMPERATURE PROBE
INPUTS. SUPPLY AND RETURN AIR
TEMPERATURE PROBES ARE MANDATORY FOR
PROPER OPERATION.*USE THE T3
TEMPERATURE INPUT INSTEAD OF A TA1 TO
DETECT BOILER SUPPLY WATER TEMPERATURE
IF THERE IS NO ECONOMIZER.
NOTE: TERMINAL DESIGNATIONS ARE DEFINED ON PAGE 5
FOR DUAL DUCT APPLICATIONS, INSTALL ONE Z8
TO MANAGE THE COLD SYSTEM AND A SECOND
Z8 TO MANAGE THE HEAT SYSTEM (AS SHOWN
ON PAGE 9 FIGURE 6). IF THERE IS A SINGLE FAN,
ONLY CONNECT ONE OF THE Z8 CONTROLLERS
TO ENERGIZE THE FAN.
CONTACT PELICAN TECHNICAL SUPPORT FOR
FURTHER ASSISTANCE AT 888.-512-0490 OR
6
