Weil McLain Boiler EG 30 THRU 75 User Manual

EG-30 thru -75  
PEG-30 thru -65  
Gas-Fired Boilers – Series 4  
Control supplement – Standing pilot  
For additional information, refer to . . .  
EG•PEG•EGH Boiler manual  
for Natural or Propane gas  
(tankless heater application optional)  
This supplement must only be used by a qualified heating installer/service technician. Before installing, read all  
instructions, including this supplement, the boiler manual and any related documents. Perform steps in the order given.  
Failure to comply could result in severe personal injury, death or substantial property damage.  
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Standing Pilot Boilers — Control Supplement  
Table of contents  
Hazard definitions and Note to the installer ....................................................................................2  
Control installation — EG-30 thru -75 water boilers without tankless heaters........................ 4-5  
Control installation — EG-30 thru -65 water boilers with tankless heaters.............................. 6-7  
Control installation — EG-30 thru -75 and PEG-30 thru -65 steam boilers with probe... ........ 8-9  
Control installation — EG-30 thru -75 steam boilers with float-type low water cutoff........ 10-11  
Damper installation.................................................................................................................... 12-13  
Checkout procedure ........................................................................................................................14  
Lighting instructions .................................................................................................................. 15-18  
Troubleshooting.......................................................................................................................... 19-23  
Replacement parts...........................................................................................................................24  
Part Number 550-110-032/0607  
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Standing Pilot Boilers — Control Supplement  
Control installation  
For your safety, turn off electrical power supply and turn off external gas supply valve before attempting to work on the  
boiler. Failure to comply can cause severe personal injury, death or substantial property damage.  
EG-30 thru -65 water boilers without tankless heaters  
1. Mount and wire controls per wiring diagram, page  
ꢂ, and Figure 1.  
Figure 1  
a. Attach junction box inside left jacket panel with #8-ꢁꢀ  
x ½” machine screws provided.  
b. Install transformer with plug-in relay receptacle and  
relay.  
c. Operating and limit circuit wiring must be 18 gauge  
or heavier.  
ꢀ. Bring supply wiring to boiler. Must be 1ꢂ gauge or  
heavier.  
ꢁ. Proceed to page 1ꢀ.  
EG-75 water boilers without tankless heaters  
Figure 2  
1. Mount and wire controls per wiring diagram, page  
ꢂ, and Figure ꢀ.  
a. Attach junction box inside left jacket panel with  
#8-ꢁꢀ x ½” machine screws and green ground nuts  
provided.  
b. Install transformer with plug-in relay receptacle and  
relay. In Canada, use chain and hook strain relief.  
c. Operating and limit circuit wiring must be 18 gauge  
or heavier.  
ꢀ. Bring supply wiring to boiler. Must be 1ꢂ gauge or  
heavier.  
ꢁ. Proceed to page 1ꢀ.  
Part Number 550-110-032/0607  
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Standing Pilot Boilers — Control Supplement  
Control installation continued  
For your safety, turn off electrical power supply and turn off external gas supply valve before attempting to work on the  
boiler. Failure to comply can cause severe personal injury, death or substantial property damage.  
EG-30 thru -65 water boilers with tankless heaters  
1. Mount and wire controls per wiring diagram, page  
ꢄ, and Figure ꢁ.  
Figure 3  
a. Install combination limit control and relay in tap-  
ping. See Boiler Manual control tapping table. Op-  
erating and limit circuit wiring must be 1ꢂ gauge or  
heavier.  
ꢀ. Bring supply wiring to boiler. Must be 1ꢂ gauge or  
heavier.  
ꢁ. Proceed to page 1ꢀ.  
Note: Tankless heater not available on EG-75 standing pilot boilers.  
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Part Number 550-110-032/0607  
8
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Standing Pilot Boilers — Control Supplement  
Control installation continued  
For your safety, turn off electrical power supply and turn off external gas supply valve before attempting to work on the  
boiler. Failure to comply can cause severe personal injury, death or substantial property damage.  
EG-30 thru -65 and PEG-30 thru -65 steam boilers with probe-type low water cutoff  
1. Mount and wire controls per wiring diagram, page  
8, and Figure ꢂ.  
Figure 4  
a. Attach junction box inside left jacket panel with #8-ꢁꢀ  
x ½” machine screws provided.  
b. Install transformer with plug-in relay receptacle.  
c. Operating and limit circuit wiring must be 18 gauge  
or heavier.  
ꢀ. Bring supply wiring to boiler. Must be 1ꢂ gauge or  
heavier.  
ꢁ. Proceed to page 1ꢀ.  
EG-75 steam boilers with probe-type low water cutoff  
1. Mount and wire controls per wiring diagram, page  
8, and Figure ꢃ.  
Figure 5  
a. Attach junction box inside left jacket panel with  
#8-ꢁꢀ x ½” machine screws and green ground nuts  
provided.  
b. Install transformer with plug-in relay receptacle. In  
Canada, use chain and hook strain relief.  
c. Operating and limit circuit wiring must be 18 gauge  
or heavier.  
ꢀ. Bring supply wiring to boiler. Must be 1ꢂ gauge or  
heavier.  
ꢁ. Proceed to page 1ꢀ.  
Part Number 550-110-032/0607  
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Part Number 550-110-032/0607  
10  
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Standing Pilot Boilers — Control Supplement  
Control installation continued  
For your safety, turn off electrical power supply and turn off external gas supply valve before attempting to work on the  
boiler. Failure to comply can cause severe personal injury, death or substantial property damage.  
EG-30 thru -65 steam boilers with float-type low water cutoff  
1. Mount and wire controls per wiring diagram, page  
10, and Figure ꢄ.  
Figure 6  
a. Attach junction box inside left jacket panel with #8-ꢁꢀ  
x ½” machine screws provided.  
b. Install transformer with plug-in relay receptacle.  
c. Operating and limit circuit wiring must be 18 gauge  
or heavier.  
ꢀ. Bring supply wiring to boiler. Must be 1ꢂ gauge or  
heavier.  
ꢁ. Proceed to page 1ꢀ.  
EG-75 steam boilers with float-type low water cutoff  
1. Mount and wire controls per wiring diagram, page  
Figure 7  
10, and Figure ꢅ.  
a. Attach junction box inside left jacket panel with  
#8-ꢁꢀ x ½” machine screws and green ground nuts  
provided.  
b. Install transformer with plug-in relay receptacle. In  
Canada, use chain and hook strain relief.  
c. Operating and limit circuit wiring must be 18 gauge  
or heavier.  
ꢀ. Bring supply wiring to boiler. Must be 1ꢂ gauge or  
heavier.  
ꢁ. Proceed to page 1ꢀ.  
Part Number 550-110-032/0607  
11  
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EG-30 thru 75 Series 4 and PEG-30 thru 65 Series 4  
Damper installation  
Once damper is installed, boiler will not operate without a  
damper installed.  
Only dampers listed in the Replacement parts table on page ꢀꢂ  
are approved for use on EG and PEG Series ꢂ standing pilot  
boilers. Any other vent damper installed could cause severe  
personal injury or death.  
The following boiler models must have damper  
installed:  
EG-30 thru EG-65, natural or propane gas.  
PEG-30 thru PEG-65, steam, natural gas.  
The following boiler models may have damper  
installed:  
EG-75, natural or propane gas.  
Figure 8 Vent damper assemblies  
Part Number 550-110-032/0607  
1ꢀ  
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Standing Pilot Boilers — Control Supplement  
Damper installation continued  
Minimum clearances to  
combustibles  
Provide a minimum of ꢄ” between the vent damper  
and any combustible material. (Provide a minimum of  
ꢂꢄ” between jacket top and combustible ceiling.) See  
EG • PEG • EGH Boiler manual for complete clearance  
requirements.  
Installation  
Do not modify draft hood or damper, or  
make another connection between draft  
hood and damper or boiler except as not-  
ed below. This will void CSA certification  
and will not be covered by Weil-McLain  
warranty. Any changes will cause severe  
personal injury, death, or substantial  
property damage.  
ꢂ. Read and apply the harness plug warning label  
(shown above) so that it is visible after installa-  
tion.  
ꢃ. Plugdamper harness receptacle intodamper harness  
plug.  
1. Install vent damper horizontally or vertically as  
shown in vent damper manufacturer’s instructions.  
Vent damper must be installed so that it serves only  
one boiler and so damper blade indicator is visible  
to the user. See Figure 8.  
Bypassing (jumpering) vent damper will  
cause flue products such as carbon mon-  
oxide to escape into the house. This will  
cause severe personal injury or death.  
ꢀ. Screws or rivets used to secure the vent damper to  
the draft hood must not interfere with rotation of  
the damper blade.  
After boiler has operated once, if either  
end of the harness is disconnected, the  
system safety shutdown will occur. The  
boiler will not operate until harness is  
reconnected.  
ꢁ. Install damper harness between damper actuator  
and knockout in jacket top panel. Use strain relief  
connectors and locknuts to secure both ends of the  
damper harness.  
Effikal damper — Damper hold open  
switch must be inAutomatic Operation”  
position for system to operate properly.  
Keep wiring harness clear of all hot sur-  
faces.  
Part Number 550-110-032/0607  
1ꢁ  
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EG-30 thru 75 Series 4 and PEG-30 thru 65 Series 4  
Checkout procedure  
1. See pages 1ꢃ-18 for “Lighting Instructions.  
ꢀ. Raise room thermostat to call for heat. Damper actuator will slowly open damper.  
ꢁ. When damper is fully open, main gas valve will open and main burners will ignite.  
Damper must be fully open before main burners light. If damper does not fully  
open, flue products will escape into house, causing severe personal injury or  
death.  
ꢂ. Lower thermostat setting. Main burner flames will go out, then damper will close.  
ꢃ. Repeat steps 1 through ꢁ several times to verify operation.  
ꢄ. Return thermostat to normal setting.  
Room thermostat anticipator settings  
Water without tankless heater — 0.40 amps  
Water with tankless heater — 0.20 amps  
Steam — Select based on gas valve and damper. See table below.  
Part Number 550-110-032/0607  
1ꢂ  
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Standing Pilot Boilers — Control Supplement  
Lighting instructions — Robertshaw 7200  
Part Number 550-110-032/0607  
1ꢃ  
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EG-30 thru 75 Series 4 and PEG-30 thru 65 Series 4  
Lighting instructions — Honeywell VR8200/VR8300  
Natural gas boilers only  
Part Number 550-110-032/0607  
1ꢄ  
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Standing Pilot Boilers — Control Supplement  
Lighting instructions — Honeywell VR8200/VR8300  
Propane boilers only  
Part Number 550-110-032/0607  
1ꢅ  
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EG-30 thru 75 Series 4 and PEG-30 thru 65 Series 4  
Lighting instructions — Robertshaw 7000ERHC  
Part Number 550-110-032/0607  
18  
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Standing Pilot Boilers — Control Supplement  
Troubleshooting  
Burner access panel must be in posi-  
In event of vent damper failure:  
tion during boiler operation to prevent  
momentary flame rollout on ignition of  
main flame. Severe personal injury or  
substantial property damage will result.  
Effikal vent damper  
If troubleshooting chart recommends replacing actuator and actuator is  
not immediately available, damper blade can be fixed in an open position  
to allow boiler operation. Manually turning blade can cause actuator  
damage. Follow these instructions only in case of no heat or damper  
actuator malfunction.  
Never jumper (bypass) any device ex-  
cept for momentary testing as outlined  
in Troubleshooting Charts. Substantial  
property damage and/or severe personal  
injury could occur.  
1. Move damper service switch to Hold Damper Open position.Apply call  
for heat to boiler. Damper blade should then rotate to open position  
and boiler will fire.  
Label all wires prior to disconnection  
when servicing controls. Wiring errors  
can cause improper and dangerous opera-  
tion.  
ꢀ. If step 1 does not open damper, manually rotate damper blade to open  
position using wrench or pliers on flat shaft between damper and actua-  
tor. Boiler will fire.Verify that damper service switch is in Hold Damper  
Open position (Figure ꢆ).  
Verifyproperoperationafterservicing.See  
vent damper manufacturer’s instructions  
packed with vent damper for additional  
information. Failure to comply could  
result in severe personal injury, death or  
substantial property damage.  
ꢁ. Do not leave vent damper permanently in this position. Replace actua-  
tor immediately. If vent damper is left in open position, boiler will not  
operate at published efficiencies.  
Johnson Controls vent damper  
If troubleshooting chart recommends replacing actuator and actuator is  
not immediately available, damper blade can be fixed in an open position  
to allow boiler operation. Follow these instructions only in case of no heat  
or damper actuator malfunction. See Figure ꢆ.  
1. Turn off power to boiler.  
Before troubleshooting  
1. Have a voltmeter that can check 1ꢀ0 VAC, ꢀꢂ VAC,  
and a continuity tester.  
Failure to turn off power to boiler can result in severe personal  
injury, death or substantial property damage.  
ꢀ. Check for 1ꢀ0 VAC (minimum 10ꢀ to maximum  
1ꢁꢀ) to boiler.  
ꢀ. Refer to vent damper manufacturer’s instructions for procedure to fix  
vent damper in open position.  
ꢁ. Be sure pilot is lit. See “Lighting instructions” on  
pages 1ꢃ-18 for details.  
ꢁ. Turn on power to boiler.  
ꢂ. Using wrench or pliers on flat shaft section, manually rotate damper  
blade until green light turns on. Boiler will fire (Figure ꢆ).  
ꢂ. Make sure thermostat is calling for heat and contacts  
(including appropriate zone controls) are closed.  
Check for ꢀꢂVAC between thermostat wire nuts and  
ground.  
ꢃ. Do not leave vent damper permanently in this position. Replace actua-  
tor immediately. If vent damper is left in open position, boiler will not  
operate at published efficiencies.  
Figure 9 Manually opening vent damper  
Part Number 550-110-032/0607  
1ꢆ  
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EG-30 thru 75 Series 4 and PEG-30 thru 65 Series 4  
Troubleshooting continued  
Figure 10  
Pilot does not stay lit —  
Troubleshooting thermocouple or thermopile  
and high limit control circuit  
1. Checking thermocouple or thermopile open system (Figure 10):  
a. Use an electronic multimeter,with leads fitted with alligator clips.Set meter  
scale to DC Millivolts.  
b. Unscrew thermocouple or thermopile fitting from gas valve.  
c. Attach one meter lead to the end of the thermocouple or thermopile gas  
valve fitting.  
d. Attach other meter lead to thermocouple or thermopile lead (copper sur-  
face).  
e. Follow Lighting Instruction label on boiler (also found in Control Supple-  
ment or User’s Information Manual) to light the pilot burner only,and hold  
the pilot flame manually. (DO NOT light main burner.)  
f. Check the reading on the multimeter. The reading should be around ꢀ8  
millivolts for a thermocouple, or ꢅ00 millivolts for a thermopile.  
g. If multimeter reading is significantly less than above and pilot flame is  
appropriate, replace the thermocouple or thermopile.  
ꢀ. Checking thermopile and high limit control circuit closed system (Fig-  
ure 11):  
a. Use an electronic multimeter,with leads fitted with alligator clips.Set meter  
scale to DC Millivolts.  
b. Loosen the insulated terminal on the TOP thermopile lead wire enough to  
allow clipping a multimeter alligator clip to the spade terminal.  
c. Attach the other multimeter lead to the thermopile lead (copper surface).  
Figure 11  
Light the pilot burner per step 1 e, above.  
d. Check the reading on the multimeter. The reading should be around ꢂ00  
millivolts.  
e. If reading is significantly less than ꢂ00 millivolts, check tightness of lead  
wire assembly in gas valve. If the connections are secure and you have  
checked the thermopile per step 1 above, replace the thermopile lead wire  
assembly.  
f. If reading on TOP thermopile lead wire is around ꢂ00 millivolts, move the  
multimeter alligator clip to the BOTTOM thermopile lead wire terminal  
and check multimeter reading.  
g. If multimeter does not read around ꢂ00 millivolts,check wiring connections  
and wire integrity to the high limit control.  
h. Check voltage at each limit terminal to make sure limit is closed. Correct  
pressure or temperature condition causing any limit to be open. Replace  
limit if necessary.  
Part Number 550-110-032/0607  
ꢀ0  
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Standing Pilot Boilers — Control Supplement  
Troubleshooting continued  
Part Number 550-110-032/0607  
ꢀ1  
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EG-30 thru 75 Series 4 and PEG-30 thru 65 Series 4  
Troubleshooting continued  
Part Number 550-110-032/0607  
ꢀꢀ  
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Standing Pilot Boilers — Control Supplement  
Troubleshooting continued  
Part Number 550-110-032/0607  
ꢀꢁ  
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EG-30 thru 75 Series 4 and PEG-30 thru 65 Series 4  
Replacement parts  
Only dampers listed below are approved for use on EG-ꢁ0 thru ꢅꢃ Series ꢂ, and PEG-ꢁ0 thru ꢃꢃ Series ꢂ, standing pilot  
ignition system boilers. Any other damper installed can cause severe personal injury or death.  
Description  
Manufacturer /  
Mfr’s part number  
Weil-McLain  
part number  
Damper  
assembly  
5” — EG-30 and EG-35; PEG-30 and PEG-35  
6” — EG-40 and EG-45; PEG-40 and PEG-45  
Effikal RVGP-KS-5BKF  
Johnson Q35GD-2  
381-800-475  
Effikal RVGP-KS-6BKF  
Field Controls 02722701  
Johnson Q35GF-2  
381-800-476  
7” — EG-50 and EG-55; PEG-50 and PEG-55  
8” — EG-65 and EG-75; PEG-65  
Effikal RVGP-KS-7BKF  
Field Controls 02723101  
Johnson Q35GH-2  
381-800-477  
381-800-478  
Effikal RVGP-KS-8BKF  
Johnson Q35GK-2  
Damper actuator  
Damper harness  
Effikal RVGP  
Johnson M35BE-1C  
510-512-337  
510-312-255  
Weil-McLain  
Weil-McLain  
591-391-795  
Boiler  
EG-30 thru 75 water  
591-391-864  
591-391-865  
591-391-866  
591-391-867  
wiring  
EG-35 thru 65 water with tankless  
harness  
EG-30 thru 75, steam, float LWCO  
EG-30 thru 75, PEG-30 thru 65, steam, probe LWCO  
Pilot kit  
EG/PEG-30 thru 65  
Natural gas  
Weil-McLain  
510-811-640  
510-811-642  
Propane gas  
Pilot burner, EG-75  
Honeywell Q327A1642  
Robertshaw CP-2  
Weil-McLain  
511-330-186  
511-724-259  
591-391-825  
590-850-561  
Thermopile, 36” long, EG-75  
Second pressuretrol wire harness  
Thermopile lead wire, 5”, EG-75  
Robertshaw  
Gas valve, ½” x ½”, sizes 30 thru 50  
Honeywell VR8200A2116  
Robertshaw 7200ER 7A0-A1B-042  
511-044-360  
natural  
gas  
¾” x ¾”, 1.2 step, sizes 55 thru 65  
Honeywell VR8300C4050  
Robertshaw 7000ERHC-S7C  
Honeywell VR8200C1074  
Honeywell VR8300C4100  
Robertshaw 7000ERHC-S7C  
511-044-256  
511-044-505  
511-044-258  
511-044-257  
511-044-506  
¾” x 1”, size 75  
Gas valve, ½” x ½”, Propane gas, sizes 30 thru 50  
propane  
¾” x ¾”, Propane gas, sizes 55 thru 65  
gas  
¾” x 1”, Propane gas, size 75  
Part Number 550-110-032/0607  
ꢀꢂ  
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