Charging The Unit; Control Board Navigation Components; Typical Flame; Typical Two Stage Gas Valve - Johnson Controls J ZR Series Installation Manual

4. Remove the heat shield on top of the manifold supports.
Burners are now accessible for inspection and/or
replacement.
NOTE: Reverse the above procedure to replace the
assemblies.
Make sure that burners are level and seat at the rear of the gas
orifice.
GAS
SUPPLY
PIPE
BURNER
BURNER BRACKET
IGNITOR
Figure 31: Typical Flame
HIGH & LOW GAS ADJUSTMENT
LO
HI
INLET
OFF
PRESSURE
TAP
INLET PRESSURE TAP
ON/OFF SWITCH
TERMINAL – C (COMMON)
TERMINAL – MP (1ST STAGE)
Figure 32: Typical Two Stage Gas Valve
Johnson Controls Ducted Systems
HEAT EXCHANGER TUBE
BURNER FLAME
(BLUE ONLY)
MATE-N-LOCK
CONNECTORS
MV
C
HI
ON
OUTLET
PRESSURE
TAP
OR
OUTLET PRESSURE TAP
REGULATOR COVER SCREWS
(REG. ADJ. BENEATH THESE
SCREWS)
TERMINAL – HI (2ND STAGE)
GAS
ADJUSTMENT
INLET
PRESSURE
TAP
INLET PRESSURE TAP
ON/OFF SWITCH
TERMINAL – C (COMMON)
TERMINAL – MP (MAIN VALVE)
Figure 33: Typical Single Stage Gas Valve

Charging The Unit

Charge unit by weight using name plate data or use charging
tables.

Control Board Navigation Components

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 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.
5566229-JIM-B-1019
ELECTRICAL
TERMINALS
OUTLET
PRESSURE
TAP
OR
OUTLET PRESSURE TAP
REGULATOR COVER
SCREW (REG. ADJ.
BENEATH THIS SCREW)
55