Navien NFC-250/175H, Руководство по установке, Страница: 104 / 151

104 Installation Checklist
Connecting the Space Heating Piping Yes No
Has the system been filled (less than 80 psi) and purged of air?
Does the piping incorporate means for air removal (scoop, separator, etc.)?
Is there an expansion tank installed and set to the proper system pressure?
If glycol is used, is it propylene at a concentration of 50% or less?
If an external low water cut off (LWCO) is installed, is it wired to the boiler?
Connecting a Pressure Relief Valve Yes No
Have you installed an approved pressure relief valve on the boiler?
Does the rating of the pressure relief valve match or exceed the maximum BTU rating of the
boiler?
Is the pressure relief valve 3 /
4
in on the space heating outlet?
Have you installed the pressure relief valve on the space heating supply pipe near the boiler?
Have you installed a discharge drain tube from the pressure relief valve to within 6-12 in
(150-300 mm) of the floor?
Connecting the Condensate Drain Yes No
Have you installed a condensate drain line from the boiler to a drain or laundry tub?
Venting the boiler Yes No
Have you vented the boiler with 2 in or 3 in PVC, CPVC, polypropylene, stainless steel, Type BH
Special Gas Vent (ULC-S636) for Category IV boilers (Canada), or in accordance with all local
codes and the guidelines in this manual?
Have you ensured that ABS or PVC cellular core pipe has not been used as venting for the
boiler?
Is the vent sloped upward toward the vent termination at a rate of
1
/
4
in per foot (2% grade)?
Are all vent runs properly supported?
Is the vent termination properly supported?
Are the air intake and exhaust connections on the flue and vent lines correctly sealed?
Have you installed termination screen caps on the exhaust and intake pipes?
Have you checked the venting for leaks?