5835254-YIM-A-1119
Johnson Controls Ducted Systems
49
5.
To service the burners, remove the heat shield on top of
the manifold supports. Inspect the burners and replace
them if required.
6.
Reverse the above procedure to replace the assemblies.
Verify that burners are level and seated at the rear of the
gas orifice.
Figure 29: Typical flame
Figure 30: Typical gas valve
Charging the unit
All ZZ units use thermal expansion devices. Charge the unit to
nameplate charge.
Navigation components for the Smart
Equipment™ control board
The following components are needed to access the control
points in the Smart Equipment™ control. Installation and
operation guides are available from your equipment dealer or
distributor.
1.
Local LCD on the unit control board.
2.
Mobile Access Portal (MAP) Gateway (Portable).
• Source 1 P/N S1-JC-MAP1810-OP
3.
MAP Gateway Quick Start Guide
P/N 24-10737-16
4.
MAP Gateway Instruction
P/N 24-10737-8
For more information on the Smart Equipment™ unit control board
navigation, refer to the
Smart Equipment™ Quick Start Guide
.
NOTE:
For more in-depth sequence of operation of the Smart
Equipment™ control, refer to the
Smart Equipment™
Controls Sequence of Operation Overview
LIT-
12011950.
Item
Description
Item
Description
A
Heat exchanger tube
D
Burner bracket
B
Burner flame (blue only)
E
Gas supply pipe
C
Igniter
F
Burner
Item
Description
Item
Description
A
High and low gas adjustment
F
HI terminal (2nd stage)
B
Mate-n-lock connectors
G
MP terminal (1st stage)
C
Outlet pressure tap
H
C terminal (common)
D
Inlet pressure tap
I
On/off switch
E
Regulator cover screws (reg.
adj. beneath these screws)
A
B
C
D
E
F
HI
LO
ON
OFF
MV
C
HI
C
P
M
OR
A
B
C
D
D
C
E
F
G
H
I
