American Water Heater Common Vent Kit for HCG3 Series User Manual

PRINTED 1015 332199-001
CONTENTS
1. Introduction          
2. PVC Common Vent Kit Instructions (See Page 3)
3. Polypropylene Common Vent Kit Instructions(See Page 9)
COMMON VENT KIT (PVC AND DURAVENT)
Kit Instructions
SERVICING SHOULD ONLY BE PERFORMED BY A QUALIFIED SERVICE TECHNICIAN...

2
INTRODUCTION
These instructions cover how to use the above kits to install two of any combination of the following 150 to 250 
models  or  300  to  500  models  of  water  heaters  in  a  common  horizontal  direct  vent  configuration. You  may  not 
combine water heaters from the two groups:
150 to 250 Models, Series 200/201;
A. O. SMITH MODELS: BTH 150(A), BTH 199(A) & BTH 250(A)
AMERICAN MODELS: (A)HCG3100T 150, (A)HCG3100T 199 & (A)HCG3100T 250
STATE MODELS: SUF 150(N,P)E(A), SUF 199(N,P)E(A) &...

3
PVC COMMON VENT KIT 9009152005 OR 9009227005 INSTRUCTIONS
ADDITIONAL INFORMATION
This kit instruction is a supplement to the Instruction Manual that is supplied with the water heater. The multiple 
heater installation must satisfy all the requirements of the Instruction Manual as well as the requirements of this 
kit instruction. The installer may also consult with installation instructions from the vent manufacturer. In the event 
of any conflict between the documents, these instructions take...

4
12
3
ITEM 
NO.
PART 
NUMBERDESCRIPTIONADDITIONALREQUIRED
19005376205PLATE,WALL COVER,0.052,GALV,STEEL4
2
332647-000VENT SCREEN COUPLING ASSEMBLY,62
3
321764-000AIR INTAKE TERMINAL2
TABLE 2. ADDITIONAL REQUIRED PARTS - PVC
Supports - You will need enough supports so that you can install one every 3 feet of horizontal run and every 5 
feet of vertical run for both the inlet and vent pipe. Supports may be field supplied metal strapping or equivalent.
 
Condensate Drain - Each water heater must have a...

5
The  individual  vent  connectors  attach  the  heaters  to  the  common  vent.  The  exhaust  vent  connectors  are  
attached to the water heater with the parts in the kit. The air inlet connectors are attached with PVC reducing  
fittings  to  the  heater’s  PVC  coupling. As  shown  in Figure  1,  the  individual  vent  connectors  consist  of  vertical 
and  horizontal  sections  that  connect  the  heater  outlets  to  the  common  vent.  Using  different  lengths  of  pipes, 
the height of the...

6
ASSEMBLY:
All  joints  that  are  PVC  to  PVC  should  be  attached  using  approved  solvent  glue.  See  the  water  heater’s  
Instruction Manual for additional details. Start the assembly at the wall termination and proceed towards the 
middle of the common system.  Next, start assembly at the appliances. This will allow small adjustments near 
the tees over the heaters.
Wall Penetration - The general instructions for penetrating the side wall are found in the Side Wall  
Terminations sections of...

7
VENT
The  exhaust  vent  is  connected  to  the  heater  by  two  adapters.  The  vent  outlet  adapter/  backflow  preventer  is  
connected  to  the  aluminum  exhaust  vent  elbow  by  inserting  the  male  end  of  the  vent  outlet  adapter  into  the 
outlet and securing it with the rubber boot and hose clamps (supplied with the water heater as shown in Figure 
3). Then, insert the backflow preventer into the adapter. Next, the Polypropylene/ PVC adapter is inserted into 
the outlet of the...

8
INLET AIR SIDE
Adapter  to  inlet  -  The  water  heater’s  air  inlet  is  either  a  3”  or  4”  PVC  coupling.  For  the  150  to  250  models,  
attach  a  3”  to  4”  reducing  adapter  and  then,  a  4”  to  6”  reducing  adapter  to  begin  the  6”  vent  connector.  The 
300 to 500 models require only a 4” to 6” reducing adapter. A 90° elbow is then attached to turn the connector  
vertical, towards the remainder of the system.
Straight pipe to tee - A straight pipe section is used to run from...

9
POLYPROPYLENE COMMON VENT KIT 9009132005 OR 9009226005 INSTRUCTIONS
This kit instruction is a supplement to the Instruction Manual that is supplied with the water heater. The multiple 
heater installation must satisfy all the requirements of the Instruction Manual as well as the requirements of this 
kit instruction. The installer may also consult with installation instructions from the vent manufacturer. In the event 
of any conflict between the documents, these instructions take precedence. The kit...

10
1 24
5
 7
3
UV RESISTANT(BLACK)
UV RESISTANT(BLACK)
 8
NOTES:ITEMS 1 THRU 8 ARE FIELD SUPPLIED ONLY1.LOCKING RINGS ARE PREINSTALLED ON PIPES, TEES, AND ELBOWS2.
ITEM NO.PART NUMBERDURAVENT STOCK NO.DESCRIPTION
ADDITIONALREQUIRED
FOR 2 HEATERS
1       N/A810009776VENT PIPE,6,72,PP,DURAVENT6
2
       N/A810009774VENT PIPE,6,36,PP,UV,DURAVENT2
3
       N/A810009772VENT PIPE,6,12,PP,DURAVENT4
4
       N/A810009787VENT TEE W/CAP,90,6,PP,DURAVENT2
5
       N/A810009783ELBOW,90,6,PP,UV,DURAVENT1
6...