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Add vent fan to boiler
Add time delay fan to boiler
Boiler rooms get hot when boiler is ON.

2023
Use only 600 volt wire.
Lamp cord, extension cords are not rated 600 volt.
Use copper wire only. Aluminum wire is fire risk and should be avoided or installed by professional.

30 amp breaker use 10 gauge /
120-240 volt 30 amp outlet can be installed on 30 amp breaker only/ use 10 gauge wire ... cannot be connected to 15-20-40 amp breaker.

Orange/ #10 gauge wire, with ground ... 30 amp capacity. Safe maximum: 30 x 80% = 24 amps.
Buy:
10-2 gauge/ 30 amp
10-3/ 30 amp
Southwire electric tools
Yellow 12 gauge 20 amp
120 volt 20 amp outlet can be installed on 20 amp breaker, but not 15 amp breaker/ use 12 ga wire.
... cannot be connected to 30-40 amp breaker. 1

Yellow/ #12 gauge wire, with ground ... 20 amp capacity. Safe maximum 16 amps.
Buy:
12-2 gauge/ 20 amp
12-3/ 20 amp

NMB is house wiring
UF is underground
Rolls of stranded wire
HOOK UP Wires
multimeter
Multimeters
Voltage is tested across two separate wires. Ohms or resistance is tested across both ends of same wire. Amperage is tested along one or two points on same wire.
Buy:
Analog multimeter
Multimeters at Amazon
Klein multimeter
Electric testers at Amazon
Clampmeter for testing amp flow on line
Southwire armored cable cutter
Electrical tools must be insulated.
Always best to disconnect power, but insulation failure, lack of proper grounding, grounded neutral, lack of GFCI, out-of-code wiring, generator operating without transfer switch, and other problems still pose a risk to anyone working on electric power ... even when breaker is off.

Buy:
1000 volt Tool kit
Electrician tools kits
KLEIN TOOLS
Tools kits
IRWIN tools
KNIPEX

Telephone cable knife
Low Voltage Mounting Bracket for Telephone

Protect wiring from damage
Use nipper instead of pliers or screwdriver for removing staples (and nails). Do not damage cable or wires inside cable.

-Code says: Cable SHALL BE secured without damage to the outer covering. NEC sec. 336-15
Buy
End cutting nippers at Amazon


Electrically insulated tools
When removing insulation from wire, do NOT score or put cuts on surface of copper wire. Doing so increases resistance and heat on wire and creates possible weak point.
Buy tools:
KLEIN TOOLS
Wire strippers at Amazon
Electric Wire Stripping Machine
Linesman pliers
Utility knife at Amazon
Lever switchWeatherproof lever switch on outdoor lights
Safely operate outdoor toggle switch
Replaces outdoor cover
Install over top of ordinary switch
Works with single-pole, double-pole, 3PST, 3-way, 4-way switches etc
Use weatherproof box for outdoor
Can be used indoor or outdoor

Buy:
Cantex lever switch
Leviton lever switch
Outdoor lever switches at Amazon

Resource
Cantex-toggle-switch-covers.pdf
Cantex-PVC-junction-boxes.pdf
Weatherproof wire connector

Weatherproof wire connector

Connector cavity is full of silicone
Built-in cover keeps silicone in place
Protect from water, dust etc
Buy from my affiliate links
Weatherproof size 14 to 6 Amazon
Weatherproof size 22 to 8 Amazon

Resource
How to select and install connectors

Multimeter
Test for breaks in wire/ Test for voltage
Most appliance require 80% rated voltage to function correctly
Buy
Analog multimeter
Multimeters at Amazon
Klein multimeter
Electric testers at Amazon
Clampmeter for testing amp flow on line
Resource:
How to test and replace element
How to test thermocouple
Element tests for 120 volts
How to test wire

Safety when testing wires:
Never touch wet or previously flooded appliance.
Never stand on wet surface when working on electric.
Never stand on bare soil, put down dry boards.
Tape tester leads to wood sticks to keep hands away from power.
Use non-contact voltage tester before touching wires.
Never touch or lean into any made of metal.
Remove metal objects from pockets.
Do not use oxygen or fuel accelerants in same room as electrical repairs

Resource:
Basic house wiring
TerminalsWeatherproof outlet cover
Safely use extension cord with weather resistant cover

Buy:
Outlet covers
Weatherproof box
For adding outdoor wiring
Drill through back of indoor box, and through wall to install new outdoor outlet.

Buy
Hubbell Bell PVC box
Hubbell Bell aluminum box

Use a delay timer
AH3 delay timer and relayAdd vent fan to boiler circuit so fan runs when boiler is ON.
When boiler turns off, vent fan continues running for period of time, then turns off.
 
AH3 off delay, 0-60 minute delay

Use same design to provide air to Heat pump water heater
General purpose relay with NO NC contacts needed.
Relay coil voltage that can be controlled by boiler... for example 24 VAC etc

Boiler turns on.... relay turns ON
Fan turns ON

Boiler turns OFF... relay turns OFF
Delay countdown begins
Fan continues to run
Fan turns OFF when countdown ends

Resources:
How to wire twin timer
How to wire off delay timer
Override thermostat with programmable timer
Through-wall fan Buy from my affiliate links:
General purpose relay
AH3-3 delay timer at Amazon
Through wall fans
AH3 delay timer and relay

Use a temperature controller


Larger image
Use a temperature controller
Tape or attach temperatur probe to boiler pipe
Input 120 volt Hot to terminals 8-9, Neutral to terminal 10.
Output 120 volt Hot from PID terminal 7 to relay terminal 7.
Output Neutral from PID terminal 10 to relay terminal 8.
Buy:
PID Temperature controllers
Digital temperature controller
Resource
PID manual

The fan circuit is 120 volt. The Hot wire is connected to COM6 on Boiler Relay. Neutral is connected to Fan and to Timer terminal 7.

When 120 volt Hot is applied to Timer terminal 2, it energizes the delay Timer ... and energizes Timer terminal 8.
When Timer is energized, Terminal 8 sends power to terminal 5
Terminal 5 turns ON and stays ON until delay period ends, at which point terminal 5 turns OFF

Lets's say you plug in 120 volt power for the first time.
Lets's say the Boiler Relay is OFF.
Hot wire for the Fan is connected to 6COM on Boiler Relay.

The Boiler Relay is OFF, so power from 6COM travels to 2NC (normally closed)
Power from 2NC (normally closed) energizes Timer terminal 2 and 8, which starts delay countdown ... which means Timer terminal 5 is ON and sending power to fan through Boiler Relay terminals 1NC and 8COM

When delay period ends, Timer terminal 5 turns OFF so no power goes to Fan ... why?
Because terminal 5 is OFF ... ... so that cuts off one path for power to get to Fan through Boiler Relay terminals 1NC and 8COM .
And since Boiler Relay is OFF, then no power is getting to terminal 4 NO (normally open) and that cuts off second way for power to get to Fan.

When Boiler Relay turns ON .... then power travels from 6COM to 4NO and Fan turns ON
4NO stays on until Boiler Relay turns OFF.

When Boiler Relay turns OFF, then relay 4NO is OFF,  but 2NC (normally open) turns ON .... power travels to Timer terminals 8 and 2.
The sequence starts from top again ... Timer terminal 5 is ON until countdown ends ... then terminal 5 turns OFF ... and Fan turns OFF.

NC normally closed 1-2 are ON when relay is OFF
NC normally open 3-4 are Off when relay is OFF
NC normally closed 1-2 are OFF when relay is ON
NC normally open 3-4 are ON when relay is ON
COM 5-6 common terminal
Connect power for relay to power terminals 7-8
Buy:
120 volt LY2 relay
120 volt with socket and din rail
240 volt relay
Surface Mount Socket




Look inside relay reveals contact points
If circuit is not working, then check contact points
If incoming power from boiler is 240V, then relay coil must be 240V
Terminals

Terminals

Buy:
Crimping tool kit
Blue for 16-14 wire
Yellow for 12-10 wire
Ratcheting Crimper

Blue terminals for 16-14 gauge wire at Amazon
Yellow 12-10 gauge female terminal 16 pcs
Buy
120 volt, 1500 watt Diode
120 volt 600 watt Diode
Save wiring, install Diode
See illustration
Humidistat Humidistat switches
Control and/or measure humidity
Use to automatically turn on vent fan

Buy:
Humidistat at Amazon
Honeywell 24-120-240 volt 7.5 amp
Broan Nutone 24 v 120 v 8 amp

Resources
DH55 instruction manual

AH3 delay timer and relay
Override circuit with Humidistat.

High humidity can cause mold and/or general moisture conditions that are harmful to metal, drywall, etc.

Vent fan operates with boiler as described above, plus operates independent of boiler when humidity exceeds set point

Buy:
Humidistats at Amazon
AH3-3 delay timer at Amazon
Through wall fans
AH3 delay timer and relayOverride circuit with Humidistat, and timer.
High humidity can cause mold and/or general moisture conditions etc.

Vent fan operates with boiler as described above, plus operates independent of boiler when humidity exceeds set point, .... plus operates independent of boiler and independent of humidistat when timer is activated.

Buy:
Humidistats at Amazon
Spring wound timer at Amazon
AH3-3 delay timer at Amazon
Through wall fans

Resources
Compare countdown timer
How to wire timers
Hybrid heat pump water heater requires 10' x 10' room
If you do not have adequate room, then install thru-wall fan to bring fresh air into the room, or vent the air into adjacent room.
Running a fan to supply air to meet the needs of heat pump water heater adds energy cost, but saves energy if heat pump cannot get enough fresh air ... why? the heat pump loses efficiency with restricted air flow.
The thru-wall fan will improve efficiency and is cheaper than the factory-sold heat pump vent systems.

Wires and amp or current switch must be inside enclosed box. Note that the amp switch must be installed on 1 wire in the circuit. Two wires might cancel each other out, and amp switch not activate.
Buy:
Thru-wall fan at Amazon
Current switch/ current transducer
6 x 6 enclosures
Resource:
Add a delay timer to the fan
Which is best hybrid water heater
current sensing switchA current sensing switch can be used to activate Boiler Relay if you want a delay circuit.  Or operate fan each time boiler is ON. Use with any heater, air conditioner etc.


Buy
Current sensing switch


surge protection Resource:
Type 1-2-3 surge protection/ wiring and manuals




Buy
Tools
Milwaukee
DEWALT
Black and Decker
Stanley
SKIL
Makita
Porter-Cable
Bosch

Irwin Hand tools
Klein hand tools
Fluke electrical testing
Dremel hobby tools

Campbell Hausfeld air powered
Tekton automotive

Powerbuilt automotive
Saws and saw blades

Buy from my affiliate links every time/ thanks:
Amazon
''As an Amazon Associate I earn from qualifying purchases''
Enter Amazon from any link on my site, fill cart with any item ... purchases pay small commission

E-mail: geno03245w@gmail.com
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