Honeywell L Manuale Utente

7

66-1153—03

Install the relay module where the relative humidity never 

reaches the saturation point. The relay module is designed to 

operate in a maximum 85 percent relative humidity 

continuous, noncondensing moisture environment. 

Condensing moisture may cause a safety shutdown.

Do not install the relay module where it could be subjected to 

vibration in excess of 0.5G continuous maximum vibration.

The relay module is not designed to be weathertight.

When installed outdoors, protect the relay module using an 

approved weathertight enclosure.

1. Check the power supply circuit. The voltage and 

frequency tolerance must match those of the R7140. A 

separate power supply circuit may be required for the 

R7140. Add the required disconnect means and 

overload protection.

2. Check all wiring circuits and complete the Static 

Checkout, Table 8, before installing the R7140 on the 

subbase.

3. Install all electrical connectors.

4. Restore power to the panel.

Per industry standards, a conduit seal or a cable type that is 

sealed is required to be installed in a device that can result in 

flammable gas or flammable liquid flow through a conduit or 

cable to an electrical ignition source in the event of a seal 

leakage or diaphragm failure. This could be on the gas valves, 

or gas or oil pressure regulators.

Check the Q520 Wiring Subbase terminals against the typical 

wiring drawings, Figures 7, 8, 12, 13, 17, or 18.

If wires are attached to terminals that are unused in the 

figures, 

DO NOT INSTALL THE R7140 until you have 

identified the connections’ functions. Most likely the old 

subbase terminals were used as tie points, so removing the 

wires, capping with a wire nut, and tucking the wire down into 

the subbase is all that needs to be done.

Make sure the wiring subbase of the old device is a

20-terminal Q520 (four rows of 5 terminals).

Make sure the system Controller is connected to the correct 

terminal on the Q520 wiring subbase. It may be in a wire nut 

tucked into the subbase. It needs to be connected to a 

terminal (like terminal 4 or 16).

Make sure there is an electrical service ground wire 

connection to the G terminal in the wiring subbase.

R4140G or BC7000 with PM720G replacement.

— If the application was a dual burner ignition, check the 

Q520 subbase for a jumper between terminals 6 to 7, 

discard the jumper and move the main valve connec-

tion (terminal 7) to terminal 6.

Replacing GP201 or GP301 devices:

— High Fire (or Purge Rate) Switch may be connected to 

terminal D.

— Identify, remove, and connect to terminal M.

Replacing GP101 devices:

— Check wiring subbase. If D is jumpered to 8, remove 

the jumper.

Replacing R4140 programmers on Carlin 1050 and 1150 

burners:

— Remove jumper from 6 to 7.

— Remove jumper from L2 to 12 and wire nut the wires 

together. Note: There will be no wire on terminal 12.

R4140M replacements:

Check terminal 13 of the Q520 wiring subbase.

— If nothing is on 13, install the new R7140M1007.

— If 13 is jumpered to 8, remove the jumper and install 

R7140M1007.

— If 13 goes somewhere (assume a low fire switch 

because the system has a damper motor), remove J1 

and J2 from the back of the R7140M1007.