Saturday, February 28, 2015

Field Excise #1: 44 Madelon Drive, Nepean, Ottawa

House Description
1. Built in 2010 by Richcraft.
2. Furnace is installed in 2010 and input capacity is 69000BTU/H
3. Air conditioner is installed in 2013 and input is 24000BTU/H

Limitations:
1. No access to concealed area
2. No access to roof view due to snow
3. Not able to crawl into attic due to possible damage. Used flashlight to view attic

General:
1. Roof missing gutter to help water move from roof to ground
2. Gas meter located in the front and has 1 3/4 inch black steel gas pipe into house
3. High efficiency furnace has air intake and exhaust outlet in good location
4. There are 3 washrooms, every washroom has vent. The powder room in the first floor has vent located at the ceiling of entrance hobby. The other two washrooms have vent located in 2nd floor.
5. Garage door works both with and without electricity power. Garage also has water facet and electricity outlet.
6. There are two outdoor electricity outlets, the front door one has Arc Fault Circuit Interrupter (AFCI) and can be reset with backdoor one
7. There are three washroom electricity outlets. All have AFCI and can be rest in the powder room
8. Kitchen has three 20A outlets with AFCI. (The differences between 15A outlet and 20A outlet is the 20A outlet has T shape of the neutral slot)
9. Electricity service box has no sign of double-tabbing.
10. Furnace starts and stops without flame deflection.

Issues
1. Roof missing gutter to help water move from roof to ground
2. Bathroom needs re-caulking

Heating:
1. Gas met has no sign of rust, mechanical damage. Gas is not shut off and locked. No ice built up and is not undersized. Easily accessible. No sign of leakage.
2. Gas pipe is black steel to both furnace and tankless water heater. No sign of leaks. Adequate support for 1 3/4 inch pipe every less than 10 feet and 3/4 inch every less than 8 feet. No sign of missing shut-off valve. No plastic pipe exposed above-grade. No piping in chimney and duct system observed. Copper tubing has proper label.
3. Furnace takes combustion air directly via PVC piping from outside.
4. Cabinet shows no sign of rust, mechanical damage and missing component. Air intake is not obstructed. No sign of scorching.
5. Power switch is in the same room with furnace and looks like a electricity switch.
6. There are two covers of the cabinet. Remove screws will remove cover. The cover for blower fan has a switch that will shut blower fan off if cover is removed.
7. Data plate showed input capacity is 69000BTU/H
8. It is induced-fan system. There are three burners and all of them are mono-port
9. Can't remove heat shield. No sign of missing, rust and scorched.
10. There is no pilot. It is electronic ignition.
11. No sign of fan switch. Electronic switch.
12. There is condensate line going to drainage pipe. No neutralizer is observed.
13. There is pressure differential switch that will shut down furnace if induced fan is not working.
14. It is sealed combustion
15. 3 inch PVC. Supported every 3 feet and has 1/4 inch slope down to furnace.
16. Unable to look at heat ex-changer.
17. Direct drive blower fan. Blower shows no sign of dirt, noise, rust and poorly secured. No fan belt and is balanced.
18. Normal furnace filter. No electronic air cleaner. Air filter is not dirty and not installed backwards. It is proper size and not loose.
19. No humidifier is installed.
20. Supply and return ducts. No sign of disconnected ducts. No sign of dirt, obstructed, collapsed and damaged ducts. No sign of leaky joints, excessive long runs. No sign of weak airflow and rust. No sign of pipes in ducts.
21. Everything looks reasonable to me.

1. Blower fan started as expected.
2. Thermostat's location is close to direct sunshine. It is not poor location but location is not ideal. No sign of loose but some dirt observed. Adjustment and calibration is proper. No anticipator.
3. Yes. There is purge cycle. It is electronic ignition. Flames look stable and in correct color.
4. About 30secs. House fan comes on. Flame pattern didn't change after house fan comes on.
5. No draft hood
6. Supply and return. Proper insulation is installed. Supply registers and return grills are in good location.

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