TYPE 2 INSTALLATION
TFP Connected to Heat Recovery Ventilator
LOCATION
The TFP should be located in the main trunk of the fresh air to house line, after the Heat Recovery Ventilator (HRV) and before any branch lines. (Fig. 3)
MOUNTING
1. Locate mounting bolts (4) on side of TFP cabinet |
for vertical hanging (Fig. 3) and remove. |
Type 2 Installation
*“Breathing T” is designed to assist in neutralizing pressure differences which can occur between HRV and TFP when joined together.
FLOOR JOISTS
2. | Measure distance between the bolts and mark it |
| on the floor/header joist where the TFP is to be hung. |
3. | Fasten hanging straps to floor joists using wide |
| head nails or screws with washers. |
4. | Insert hanging bolts through prepunched holes in |
| straps and lift TFP into position. Tighten and secure bolts. |
DUCTING
Mounting bolts
HRV | |
Relief opening |
|
(breathing T) | Flexible ducting |
or leave a 4" - 6" | (fresh air supply) |
gap between the TFP and the HRV
Hanging straps (4) |
| |
| Power cord | |
6" port collars |
| |
| Main supply trunk | |
TFP | Air flow | |
To BRANCH LINES | ||
|
Flexible ducting
TFP air cleaner
Access door
Figure 3
1.Install (2) 6” oval port collars (provided) on TFP cabinet with (8) 8/32” X 3/8” sheet metal screws provided (Fig. 3).
2.The ducting between the TFP and the HRV, and between the TFP and the main supply trunk line to the house, should be kept as straight as possible.
3.A relief opening or breathing T is required to prevent pressure differences.
4.A short piece
This will reduce vibration and noise transfer if present.
NOTE: Please refer to the HRV installation manual for proper ducting of that appliance.
CAUTION
The room in which the “breathing T” is open should be free of combustion equipment such as gas hot water tanks and furnaces. If the “T” must be exposed in these areas, a pressure test (spillage or backdraft test) should be conducted on the combustion equipment after everything is installed.
3
