Retrotec DucTester 341 - Manual (Page 79)

Page 79 of 83
©Retrotec Inc. 2014
Appendix F: Duct-Test Recording Forms
Total Duct Leakage Test Form
Test date: _______________/20____
Fan Model _____________________Fan Serial # ___________ Digital Gauge Serial # ____________
Address: _______________________ Contact: ________________ Phone: ____________________
Technician: ________________________________________________
Step
 More details and check off
1 Position DucTester near return
Ensure the flex will reach the return grill
2 Turn Air-handler off (if installed)
Put your car keys beside the switch so you remember to turn back
on
3 Remove the furnace filter and cover filter opening
4
Attach flex to return register or access door in the air
handler
Attached to __ return register, __access door
6 Seal all registers
7 Insert blue tube in a supply register
__ attached to register closest to plenum
8 Open interior and one exterior door
To make indoor and outdoor pressure the same
9 Make connections to the DucTester
__ yellow tube, __green tube, __ power cord, __ speed control
10 Connect tubes and speed control to the gauge
__ blue tube, __ yellow tube, __green tube,___ speed control
11 Enter conditioned floor area of the house into gauge
_____________ sq ft conditioned floor area
12 Create a 25 Pa pressure in the ducts
Press [Set Pressure], [25], and [Enter]. Press [@] to display “@ 25
Pa”
13 Range Configuration, usually it will be Range 74
______
14
Record Pressure (PrA) and Flow
Record Flow with @ 25 Pa displayed.
Record n and Time Avg displayed.
______ Pa ______ CFM with NO @ 25
______ CFM @ 25
___ n and ___ seconds of Time Average displayed.
15 Record Flow Direction
___ flow into ducts, __ out of the ducts
16 Record CFM/100 sq ft
_______ CFM/100 sq ft
17
Maximum Allowable duct leakage
__Post Construction: 12 CFM/100 sq ft
__Rough in Air handler installed: 6 CFM/100 sq ft
__Rough in Air handler not installed: 4 CFM/100 sq ft
___ Pass, ___ Fail.
18 Remove tape, turn HVAC equipment back ON
Return home to state you found it in
Recording form based on IECC 2009