Direct Vent Style Fireplaces

Question 1

Where is this fireplace typically installed? (Direct Vent Style)

Answer 1

The H34 fireplace may be installed in any location that maintains proper clearance to air conditioning ducts, electrical wiring and plumbing.

Question 2

While installing this fireplace, can you suggest a suitable style of vent material. (Direct Vent Style)

Answer 2

Direct vent rigid and flex pipe material.

Question 3

Where does this fireplace draw combustion air from? (Direct Vent Style)

Answer 3

It draws air from the outdoors.

Question 4

Does this appliance have a draft hood? (Direct Vent Style)

Answer 4

No.

Question 5

What would happen if the venting is blocked? (Direct Vent Style)

Answer 5

There will be backdraft and you will get the products of combustion into your home.

Question 6

Would you have the same problem if the house was negative pressure? (Direct Vent Style)

Answer 6

No.

Question 7

Does this fireplace have a thermocouple? (Direct Vent Style)

Answer 7

Yes.

Question 8

Does this fireplace have a thermopile? (Direct Vent Style)

Answer 8

Yes.

Question 9

What item does the thermocouple connect to? (Direct Vent Style)

Answer 9

It connects to the gas valve.

Question 10

What is the function of the thermopile? (Direct Vent Style)

Answer 10

The function of the thermopile is to open the gas valve.

Question 11

What are ALL the voltages you would expect to see with a thermocouple/thermopile gas valve? (Direct Vent Style)

Answer 11

2-4 Dropout, 10-15 closed circuit, 20-30 open circuit.

Question 12

Where would you read the output voltage from the thermopile? Show the terminals? (Direct Vent Style)

Answer 12

TH/TP to TP … Middle/Bottom terminals.

Question 13

If you want to read the open circuit voltage, what should you do? Do you have to disconnect the thermopile from the gas valve to read open circuit voltage?
Why? (Direct Vent Style)

Answer 13

Open circuit - with system off, place multimeter leads on TH/TP and TP. You do not have to disconnect the thermopile from the gas valve to read open circuit.

Question 14

If you want to read the thermopile output voltage holding in the safety, what would you do? (Direct Vent Style)

Answer 14

This would be Closed circuit 450-550mV, TH/TP to TH

Question 15

What is the thermopile voltage while energizing the main gas valve? (Direct Vent Style)

Answer 15

Can’t we just put leads on middle and top to find out then tell him?
We would put our leads on the top and middle terminals.

Question 16

Please show me the terminals to read the actual voltage the main coil is receiving? (Direct Vent Style)

Answer 16

Middle / Top.

Question 17

Where should you connect the thermostat wires? (Direct Vent Style)

Answer 17

TH/TP(Bottom) and TH (Top).

Question 18

B34 Venting Sizes (Direct Vent Style)

Answer 18

7’’ Combustion Air and 4’’ Exhaust