Cable For Fc Buses And Sa Buses In Order Of Preference . 69 33 Ignition Control Flash Codes - York ZH078 Installation Manual

Table 32: Cable for FC Buses and SA Buses in Order of Preference
Bus and Cable Type
FC Bus: 22 AWG Stranded, 3-Wire Twisted Shielded Cable
SA Bus (Terminal Block): 22 AWG Stranded, 4-Wire, 2 Twisted-
Pair Shielded Cable
SA Bus (Modular Jack):
26 AWG Solid 6-Wire, 3 Twisted-Pair Cable
FC Bus: 22 AWG Stranded, 3-Wire Twisted Non-Shielded Cable
SA Bus (Terminal Block): 22 AWG Stranded, 4-Wire, 2 Twisted-
Pair Non-Shielded Cable
1. We strongly recommend 3-wire (for FC bus) and 4-wire, 2 twisted-pair (for SA bus), 22 AWG stranded, shielded cable. A 22 gauge cable
offers the best performance for various baud rates, cable distances, and number of trunk devices primarily due to lower conductor-to-
conductor capacitance. Shielded cable offers better overall electrical noise immunity than non-shielded cable. Observe the shield
grounding requirements.
2. We recommend 26 AWG solid, 6-wire (3 twisted pairs) cable as the best fit for fabricating modular cables with the modular jack housing
assembly. Be sure the cable you use fits the modular jack housing. The preassembled cables that are available from Anixter (Part No.
CBL-NETWORKxxx) use 24 gauge wire.
Table 33: Ignition Control Flash Codes
Flashes
STEADY ON
HEARTBEAT
1
2
3
4
5
6
STEADY OFF
Johnson Controls Ducted Systems
1
2
Fault Conditions
Control Failure
Normal Operation
Not Applicable
Pressure Switch Stuck Closed
Pressure Switch Failed To Close
Limit Switch Open
Flame Present With Gas Off First Stage Gas Valve
Energized With W1 Off Second Stage Gas Valve
Energized With First Stage Gas Valve Off
Ignition Lockout
No Power Or Control Failure
Non-Plenum Applications
Part Number O.D.
Anixter:
CBL-22/3-FC-PVC 0.138 in.
Belden®: B5501FE
Anixter:
CBL-22/2P-SA-PVC 0.209 in.
Belden: B5541FE
— —
Belden: B5501UE 0.135 in.
Belden: B5541UE 0.206 in.
Control
Pressure Switch
Venter Pressure Switch Vent Blocked
Main Limit AUX Limit
Gas Valve
Gas Flow
Gas Pressure
Gas Valve
Flame Sensor
24VAC or Control
5167515-YIM-H-0518
Plenum Applications
Part Number
Anixter: CBL-22/3-FC-PLN
Belden: B6501FE
Anixter: CBL-22/2P-SA-PLN
Belden: B6541FE
Anixter preassembled: CBL-
NETWORK25 CBL-
NETWORK50 CBL-
NETWORK75 CBL-
NETWORK100
Belden: B6501UE
Belden: B6541UE
Check
O.D.
0.140 in.
0.206 in.
0.15 in.
0.131 in.
0.199 in.
69