Pioneer PHR100-55, Instruction Manual

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39
H. EXHAUST VENT AND INTAKE AIR PIPE INSTALLATION
1. Use only solid PVC or CPVC pipe. FOAM CORE PIPING IS NOT APPROVED.
2. Remove all burrs and debris from joints and fittings.
3. All joints must be properly cleaned, primed, and cemented. Use only cement and primer approved for
use with the pipe material. Cement must conform to ASTM D2564 for PVC and ASTM F493 for CPVC
pipe.
All joints of positive pressure vent systems must be sealed completely to prevent leakage of flue products
into living space.
4. Horizontal lengths of exhaust vent must slope back towards the water heater not less than ¼" per foot
to allow condensate to drain from the vent pipe. If exhaust pipe must be piped around an obstacle that
results in creation of a low point, condensate will collect in this low point and form a blockage. This
condensate must be drained away using a field-installed condensate drain assembly.
5. All piping must be fully supported. Use pipe hangers at a minimum of 4 foot intervals to prevent
sagging of the pipe where condensate may form.
6. Do not use the heater to support any piping.
7. A screened straight coupling is provided with the heater for use as an outside exhaust termination.
8. A screened inlet air tee is provided with the heater to be used as an outside intake termination.
9. The following information on Table 5-8 lists optional intake air/exhaust vent terminations available from
HTP.
DESCRIPTION STOCK CODE
2’ PVC CONCENTRIC VENT TERMINATION KIT KGAVT0501CVT
3’ PVC CONCENTRIC VENT TERMINATION KIT KGAVT0601CVT
2” STAINLESS STEEL VENT TERMINATION KIT V500
3” STAINLESS STEEL VENT TERMINATION KIT V1000
4” STAINLESS STEEL VENT TERMINATION KIT V2000
Table 8
I. REMOVING AN EXISTING WATER HEATER
When removing an existing heater, the follow the steps below with each appliance remaining connected
to the common venting system in operation, while other appliances remaining connected to common
venting system are not operating.
1. Seal any unused openings in the common venting system.
2. Visually inspect the venting system for proper size and horizontal pitch to determine if there is
blockage, leakage, corrosion or other deficiencies that could cause an unsafe condition.
3. If practical, close all building doors, windows and all doors between the space in which the appliance
remains connected to the common venting system located and other spaces in the building. Turn on
clothes dryers and any appliances not connected to the common venting system. Turn on any exhaust