Watts Industries AERCO Innovation 24429 Owner's manual
Innovation Anode Retrofit Kit Instructions
Kit # 24429 TID-0128_0B
05/21/2015 AERCO International, Inc. •100 Oritani Dr. •Blauvelt, New York 10913 •Phone: 800-526-0288 Page 1 of 6
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Innovation Heat Exchanger Anode Retrofit Kit # 24429 Part List
ITEM#
QTY.
P/N
DESCRIPTION
1 1 44173 ANODE MOUNTING BRACKET
2 2 44174 ANODE BLOCK
3 3 54107 HEX HEAD CAP SCREW 3/8–16 X 1”, NiCu ALLOY
4 1 54106 HEX HEAD CAP SCREW 5/16–24 X 1 1/2” STAINLESS
5 1 56077 HEX NUT 5/16–24 STAINLESS
6 3 53058 LOCKWASHER, EXT TOOTH, STAINLESS
7 4 88019 ‘O’ RING, NEOPRENE
8 4 54108 HEX HEAD SEAL BOLT 1/4–20 with NEOPRENE RING
9 1 GP-18532 HEAD GASKET
10 1 GP-18556 HEAD RELEASE GASKET
Disclaimer
The information contained in these instructions are subject to change without notice
from AERCO International, Inc. AERCO makes no warranty of any kind with respect to
this material, including, but not limited to, implied warranties of merchantability and
fitness for a particular application. AERCO International is not liable for errors
appearing in this manual. Nor for incidental or consequential damages occurring in
connection with the furnishing, performance, or use of this material.
Innovation Anode Retrofit Kit # 24429
Instructions
This kit applies to all Innovation model water heaters
ITEM 5:
P/N 56077
HEX NUT
5/16–24
(1 each)
ITEM 1:
P/N 44173
ANODE MOUNTING
BRACKET
(1 each)
TECHNICAL INSTRUCTIONS
ITEM 6:
P/N 53058
LOCKWASHER
(3 each)
ITEM 3:
P/N 54107
3/8–16 HEX
HEAD CAP
SCREW
(3 each)
ITEM 4:
P/N 54106
5/16–24 HEX
HEAD CAP
SCREW
(1 each)
ITEM 2:
P/N 44174
ANODE
BLOCK
(2 each)
ITEM 7:
P/N 88019
O’ RING,
NEOPRENE
(4 each)
ITEM 8:
P/N 54108
1/4-20 HEX HEAD
SEAL BOLT
(4 each)
ITEM 9:
P/N GP-18532
HEAD GASKET
(1 each)
ITEM 10:
P/N GP-18556
HEAD RELEASE
GASKET
(1 each)
Innovation Anode Retrofit Kit Instructions
Kit # 24429 TID-0128_0B
05/21/2015 AERCO International, Inc. •100 Oritani Dr. •Blauvelt, New York 10913 •Phone: 800-526-0288 Page 2 of 6
1. Introduction
This Technical Instruction Document (TID) provides instructions for installing the anode
assembly in Innovation water heaters in the field. This kit is delivered unassembled.
These instructions apply to all Innovation model water heaters.
Figure 1: Anode Assembly – Exploded View
2. Tools Required
•Assorted socket or open-end wrenches
3. Preparing the Unit
To prepare the unit for the retrofit, perform the following:
Preparing the Unit for Retrofit
1. Set the ON/OFF switch on the control panel to the OFF position. Disconnect AC power
from the unit by turning off power at the breaker.
WARNING! -
A high voltage of 120 VAC is used in Innovation water heaters. It is
REQUIRED that all power applied to the unit is removed before
performing the procedures described below. Use extreme care
when accessing circuits and electrical connections within the
equipment. Serious personal injury or death may occur if this
warning is not observed.
Various components may be hot. Care must be exercised to avoid
burns. AERCO suggests allowing the unit to cool to room
temperature before starting these instructions.
3/8-16 HEX CAP SCREW
(2 Each)
5/16-24 HEX CAP SCREW
(POSITIONING SCREW)
(1 Each)
1/4-20 HEX HEAD
SEAL BOLT
(4 Each)
ANODE
MOUNTING
BRACKET
(2 PARTS)
‘O’ RINGS
(2 Each)
Innovation Anode Retrofit Kit Instructions
Kit # 24429 TID-0128_0B
05/21/2015 AERCO International, Inc. •100 Oritani Dr. •Blauvelt, New York 10913 •Phone: 800-526-0288 Page 3 of 6
Preparing the Unit for Retrofit – Continued
2. Turn off the supply gas upstream from the unit.
3. Allow enough time for the unit to return to room temperature.
4. Close the water inlet, outlet, and recirculation shut-off valves to the unit.
5. Carefully open the drain valve while opening the relief valve on the rear of the unit to
relieve pressure and allow air into the shell.
Do not drain the unit without venting the shell! A vacuum in the unit may
displace the head liner causing serious damage not covered by warranty.
6. Remove all panels from the front, top and sides of the unit, to provide access to the heat
exchanger top plate. IMPORTANT!
Observe local requirements and lockout procedures when
working on the unit.
4. Disassembling the Unit
Disassembling the Unit
1. Referring to Figure 2, remove the 5/8-11 hex nuts and washers from the upper head and
then remove the upper head.
2. Remove the upper head-liner (copper or other material) and retain it for reassembly.
3. Remove the head release gasket and discard it.
4. Remove the head gasket and discard it.
Figure 2: Heat Exchanger Head Configuration
5. Installing the Anode Assembly
Once the upper head has been removed, refer to Figure 3, below, and complete the instructions
below to install the anode assembly.
CAUTION
5/8-11 X 3-3/4” STUD
5/8-11 HEX NUT
UPPER HEAD
SHELL FLANGE
HEAT EXCHANGER
UPPER HEAD LINER
(P/N 123077)
HEAD RELEASE
GASKET
(P/N GP-18556)
HEAD GASKET
(P/N GP-18532)
Innovation Anode Retrofit Kit Instructions
Kit # 24429 TID-0128_0B
05/21/2015 AERCO International, Inc. •100 Oritani Dr. •Blauvelt, New York 10913 •Phone: 800-526-0288 Page 4 of 6
Anode Assembly Installation
1. Cut a doughnut shaped piece of cardboard that will fit snugly inside the heat exchanger
shell and around the combustion chamber head and fit it in place above the heat
exchanger tubes. This will act as a shield to prevent any hardware or debris from dropping
into the chamber during installation.
2. Thread the 5/16-24 hex nut (P/N 56077) most of the way onto the 5/16–24 hex head cap
screw (the positioning screw) (P/N 54106), and then thread the positioning screw a short
way into the center hole of the mounting bracket’s larger piece.
3. Place the mounting bracket on the combustion chamber head’s lifting hook with the
positioning screw directly over the lifting hook.
4. Position the smaller, separate piece of the mounting bracket on the opposite side of the
lifting hook, and loosely fasten it to the larger piece of the mounting bracket with two 3/8–
16 hex head cap screws (P/N 54107) and lock washers (see Figure 3).
The 3/8–16 hex head cap screw material is softer than steel screws and
the threads can strip easily. Take precautions to prevent stripping during
installation. This kit includes an extra screw in case one is damaged.
Figure 3: Anode Assembly and Combustion Chamber Head
5. Lift the mounting bracket up until the upper 3/8–16 cap screw comes in firm contact with
the underside of the lifting hook and level and parallel to the heat exchanger’s shell flange,
and then fully tighten both screws.
6. Fully tighten the 5/16–24 positioning screw. The lifting hook is now held firmly between the
3/8 – 16 cap screws and the positioning screw.
CAUTION
3/8-16 CAP
SCREWS
(2 Each)
& LOCK
WASHERS
(2 Each)
5/16-24 POSITIONING
HEX SCREW (1 Each)
1/4-20 SEAL BOLTS
(4 Each)
COMBUSTION
CHAMBER
HEAD
COMBUSTION
CHAMBER HEAD
LIFTING HOOK
MOUNTING
BRACKET
5/16-24 NUT
(1 Each)
MOUNTING
BRACKET,
SEPARATE
PIECE
Innovation Anode Retrofit Kit Instructions
Kit # 24429 TID-0128_0B
05/21/2015 AERCO International, Inc. •100 Oritani Dr. •Blauvelt, New York 10913 •Phone: 800-526-0288 Page 5 of 6
Anode Assembly Installation – Continued
7. Fully tighten the 5/16-24 hex nut on the positioning screw to lock it in place. The mounting
bracket is now firmly attached to the lifting hook, ensuring that the anode blocks are
electrically connected to the unit.
8. Position the four (4) ‘O’ rings (P/N 88019) in the circular recesses around the threaded
holes in the anode blocks (P/N 44174). The ‘O’ rings keep water from entering the
threaded holes, preventing them from corroding, which would shorten the anode’s life.
9. Fasten one anode block to the mounting bracket with two (2) 1/4–20 hex head seal bolts
(P/N 54108) and fully tighten them. Note that these are specialized bolts with built-in ‘O’
rings –DO NOT substitute off-the-shelf bolts of the same size. DO NOT over-tighten
these bolts.
10. Repeat the previous step to attach the second anode block to the mounting bracket.
11. Remove any hardware or debris that may have fallen on the cardboard shield installed in
step 1 and then remove the shield from the chamber.
6. Reassembling the Heat Exchanger
Reassembling the Heat Exchanger
1. Place the new head gasket (P/N 18532) on top of the heat exchanger shell flange.
2. Place the new head release gasket (P/N 18556), upper head liner and upper head on,
aligning them with the 5/8-11 X 3-3/4” studs in the shell flange.
3. Replace the nuts and washers on the 5/8-11 X 3-3/4” studs.
4. Cross tighten the nuts to approximately 75 ft.-lb. torque to obtain a uniform seating, then
progressively tighten the nuts to 200 ft/lbs. minimum.
7. Returning the Unit to Service
Returning the Unit to Service
5. Close the drain valve.
6. Reopen the unit’s water inlet, outlet, and recirculation shut-off valves.
7. Reinstall the unit’s front, top and side panels.
8. Turn on the supply gas upstream to the unit.
9. Reconnect AC power to the unit.
10. Set the ON/OFF switch on the control panel to the ON position.
--- END ---
Innovation Anode Retrofit Kit Instructions
Kit # 24429 TID-0128_0B
05/21/2015 AERCO International, Inc. •100 Oritani Dr. •Blauvelt, New York 10913 •Phone: 800-526-0288 Page 6 of 6
International Inc.
© AERCO International, Inc., 2015
Change Log
Date Description Changed By
09/08/2014 Rev A: Initial release (reference PIR 1086) Chris Blair
05/21/2015 Rev B:
934-190: Added two gaskets to the instructions: GP-
18532, GP-18556. Chris Blair
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