User's Manual

MTU Instructions
General Installation and Wiring Guidelines
Recommended Supplies
We recommend the following supplies, for which quantities will depend upon the number of
MTUs to be installed and the conditions encountered at each installation location.
Item
Hexagram Part
Number
Quantity
AMP Tel-Splice, 2-conductor 043-1910
As needed
Scotchlok, UR 2-3 wire gel-filled butt connector 043-1913
As needed
3-conductor, 22 ga, solid wire, black UV jacket 070-0506
As needed
3-conductor, 22 ga, solid wire, grey UV jacket 070-0508
As needed
AA alkaline battery, 1.5 volt (for Psion) 042-0036
As needed
Back-up battery for Psion MTU Programmer 042-0037
As needed
3M DBR-6 Direct Burial Kit (for pit unit splices) 043-1912
As needed
Sealant — White RTV 084-0082
As needed
Black electrical tape
As needed
Tie-wraps, black
As needed
Staples, telephone type, 9/16” (Arrow T-25)
As needed
Sharpie permanent marker, fine point
As needed
Plastic masonry anchors #6 x 1”, ¼” diameter
As needed
for use with Original Flatpak MTUs
Hexagram plastic spacers 056-5155H1
As needed
Phillips exterior screws 8 x 2 ½” (deck screw)
As needed
Phillips exterior screws 8 x 3” (deck screw)
As needed
Drywall screws, #6 x 1-5/8” Phillips, coarse (for indoor use)
As needed
Drywall screws, #6 x 2” Phillips, coarse (for indoor use)
As needed
MTU spacer for pipe or bar mount 056-5155K
As needed
18″ heavy-duty UV-resistant tie wrap (for bar mounting gas
MTUs)
067-0030
As needed
10-32 x 1½″ pan head machine screw (for bar mounting gas
MTUs)
069-103248CS
As needed
10-32 nut, stainless steel (for bar mounting gas MTUs) 069-3011
As needed
#10 7/16” flat washer, stainless steel (for bar mounting gas
MTUs)
069-3004
As needed
for use with NEW Compact Flatpak MTUs
Long Spacers/Standoffs (for pit lid installations) 056-8150L
As needed
Short Spacers/Standoffs (for pit lid installations) 056-8150S
As needed
Phillips exterior screws 8 x 1 3/4” (deck screw)
As needed
Drywall screws, #6 x 1-5/8” Phillips, coarse (for indoor use)
As needed
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