Zone Upgrade Kit Installation - Graco Therm-O-Flow 20 Instructions - Parts Manual

8 Zone Upgrade Kit Installation

1. Disconnect the plug from the power outlet or turn
off the Circuit Breaker for incoming power.
2. Place the grounding wrist strap (7) over your wrist
and secure the other end to a grounded surface.
3. Set the kit's MZLP (1) rotary switch to "2" on a
primary system or "6" on a secondary system.
4. Remove the screws (B), the plate (A), and the
gasket (C) from the system. Use the screws (2) to
install the MZLP (1) onto the system as shown.
NOTE: The new MZLP (1) will be refereed to as MZLP2,
and the original MZLP that came with the system will be
referred to as MZLP 1.
5. Open the electrical enclosure door.
NOTE: Do not force the electrical connection. Minimal
force is required to seat the connector. If resistance is
felt, stop, and verify the connector orientation.
6. Connect the cable (4) to the J3 connector on MZLP
1 and the J6 connector on MZLP 2.
7. Connect the power harness (6) to the MZLP 2 J2
connector and the J5 connector on the AWB. Install
the jumper (5) on the MZLP 2 J5 connector.
8. Use fittings and hoses that meet your hose routing
needs. See Accessories and Kits, page 88.
9. To ensure your system has the latest software,
insert the token (8) into the ADM. See Update
Software, page 60.
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