Bradford-White MITW -10 User Manual

Size:
1.07 Mb
Download

Instructions for:

TTW 1 Universal Service

Replacement Blower Kit

P/N 265-47200-00

(To be performed ONLY by qualified service providers)

The Blowers on the Following Water

Heaters are Serviced by This Kit:

MITW -10

MITW -12 /-15

M1TW Series

Series

Series

(Normal & High Altitude)

(For full model numbers, see page 2.)

Manual 47216A Save this manual for future reference

Model Numbers Reference

Water Heater Model Numbers Serviced by This Kit

 

 

 

Water Heater

 

Original Blower’s P/N

 

 

Model Numbers

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MITW-10Series

MITW40L*LN10

 

 

 

MITW40L*CX10

239-39785-00

 

MITW50L*LN10

 

 

 

 

 

 

 

 

MITW50L*CX10

 

 

 

 

 

 

 

 

 

 

 

 

 

MITW40L*EN12

 

 

 

 

MITW40L*BN12

 

 

 

 

MITW40L*CX12

239-41605-00

 

Series

MITW50L*EN12

 

 

 

 

MITW50L*BN12

 

 

 

-15

MITW50L*CX12

 

 

 

 

 

 

 

 

 

 

 

-12 /

 

 

 

 

 

 

 

 

MITW40L*EN15

 

 

 

MITW

 

 

 

MITW40L*BN15

 

 

 

MITW40L*CX15

239-41605-00

 

 

MITW50L*EN15

 

 

 

 

 

 

MITW50L*BN15

 

 

 

 

MITW50L*CX15

 

 

 

 

 

 

 

 

 

 

 

 

 

 

M1TW40S*BN

239-45584-00

 

 

 

M1TW40S*CX

 

 

 

M1TW50S*BN

 

243-45987-00(Hi-Alt)

 

Series

 

M1TW50S*CX

 

 

 

 

 

 

 

 

 

 

 

M1TW40S*FBN

 

 

 

M1TW

 

 

 

M1TW40S*FCX

239-45584-00

 

 

 

 

M1TW50S*FBN

 

 

M1TW50S*FCX

 

243-45987-00(Hi-Alt)

 

 

M1TW60T*FBN

 

 

 

 

M1TW60T*FCX

 

 

 

 

 

 

 

 

 

 

 

 

(*) Denotes Warranty Years (Typically “5”, “6”, or “10”)

Page 2

Kit Components

3

2

4

10

7

 

13

8

5

1

9

11

 

 

 

 

 

 

6

 

 

 

 

 

 

 

 

12

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Part Number

Qty

Description

 

 

Models Used On:

1

265-47195-00

1

Universal Blower

 

 

All

2

239-47194-00

1

Wire Harness MITW-12/15Series

 

 

MITW -12 /-15Series

3

239-47193-00

1

Wire Harness MITW-10Series

 

 

MITW -10Series

4

239-46263-00

1

2" Exhaust Adapter & Vent Terminal Kit

 

 

All

5

239-47196-00

1

Transformer Junction Box

 

 

MITW -12 /-15Series

6

239-47199-00

1

Transformer Junction Box Cover

 

 

MITW -12 /-15Series

7

265-44072-01

1

Transformer (120V / 24V)

 

 

MITW -12 /-15Series

8

239-44113-00

5

Screws

 

 

All

9

239-47190-00

1

Dilution Air Orifice

M1TW Series (normal & high altitude)

10

239-47192-01

1

Pressure Switch (-0.70"wc)

M1TW Series (high altitude only)

11

239-47191-00

1

Flue Restrictor

MITW -10Series & MITW-12 /-15Series

12

238-47197-00

1

Template

MITW -10Series & MITW-12 /-15Series

13

239-47281-00

2

Wire Nuts

MITW -10Series & MITW-12 /-15Series

For full model numbers, see page 2 (Model Number Reference Page).

Page 3

Tools Required

¼" Nut Driver 5/16" Nut Driver Slotted Screwdriver Philips Screwdriver Hammer

1/8" Drill Bit Drill

Channel Lock Pliers

Needle Nose Pliers

Tape (preferably scotch or masking) PVC Primer / Cement

Wire Cutters

Wire Strippers Wire Brush Hacksaw

Page 4

Bradford White

TTW 1 Universal Service

Replacement Blower Kit

P/N 265-47200-00

 

Table of Contents

 

 

 

 

 

Page

Kit Components

 

3

Tools Required

4

MITW -10Series Water Heaters:

6

MITW40L*LN10, MITW40L*CX10, MITW50L*LN10,

MITW50L*CX10

 

 

MITW -12 /-15Series Water Heaters:

12

MITW40L*EN12, MITW40L*BN12, MITW40L*CX12,

MITW50L*EN12, MITW50L*BN12, MITW50L*CX12,

MITW40L*EN15, MITW40L*BN15, MITW40L*CX15,

MITW50L*EN15, MITW50L*BN15, MITW50L*CX15

M1TW Series Water Heaters:

21

M1TW40S*BN, M1TW40S*CX, M1TW50S*BN,

M1TW50S*CX, M1TW40S*FBN, M1TW40S*FCX,

M1TW50S*FBN, M1TW50S*FCX, M1TW60T*FBN,

M1TW60T*FCX

Notes

27

 

(*) Denotes Warranty Years (Typically “5”, “6”, or “10”)

 

 

Notice:

To determine what series water heater is being serviced, please refer to the

 

 

model numbers shown below each series title. Then, turn to the applicable

 

 

page for the correct water heater series.

 

 

 

 

 

Page 5

TTW1 Universal Service

Replacement Blower

MITW -10Series

Note: This set of instructions is for the following model numbers: MITW40L*LN10, MITW40L*CX10, MITW50L*LN10, and MITW50L*CX10.

Note: The following parts are required to convert the model numbers shown above:

Template, Flue Restrictor, Screws, Wire Harness MITW-10 Series, Universal Blower, Wire Nuts, and 2" Exhaust Adapter / Vent Terminal Kit. Please refer to the Kit

Components page (Page 3) for a picture of each item.

Step 1. Unplug water heater from wall outlet.

Remove power cord from outlet.

Unplug blower harness from jacket head receptacle.

Step 2. Detach blower wire harness from receptacle located in the jacket head.

Unscrew both clamps that hold the adapter to the blower and vent pipe.

Step 3. Disconnect the vent pipe and adapter that are connected to the outlet of the blower.

Page 6

TTW1 Universal Service

Replacement Blower

MITW -10Series

Step 4. Remove the screws, qty. (4), that secure the blower to the jacket head.

Step 5. Remove blower from the top of the water heater. Remove any loose debris and tools from the top of the water heater, including any portion of the blower gasket that still exists.

Unscrew (4) screws that hold blower to the jacket head.

Warning:

Failure to locate the blower correctly will

 

 

result in improper water heater operation.

 

 

 

 

Step 6.

Create the new mounting hole locations

 

for the new universal replacement blower.

 

Use template supplied with manual.

 

a.) On the template, P/N 238-47197-00,

 

the (3) circular sections for the water

 

connections and flue have already

 

been removed. Also, the dotted lines

 

from the side of the paper are

 

perforated for easy tearing.

 

Slip the template over the water connections. It

 

is not necessary to remove the pipes connected

 

to the water heater’s inlet and outlet.

 

b.) Place the template on top of the water

 

heater, being sure to have the arrows

 

point towards the front of the water

 

heater, which is the side where the

 

drain and gas valve are located. Tape

 

the template to the top of the water

 

heater to hold it in place.

The (3) circular sections on template have been pre-cutand removed.

Tear paper along dotted lines where perforation exists, or cut with scissors.

Place template on top of water heater in correct orientation.

c.) At each of the (3) “Drill Here” locations

 

on the template, drill a 1/8” diameter

 

hole through the template and the

Drill

jacket head. Remove the template

from the top of the water heater.

 

Drill (3) locations on top of water heater, where “Drill Here” is noted on the template.

Page 7

TTW1 Universal Service

Replacement Blower

MITW -10Series

Warning:

Failure to install flue restrictor will result in

 

 

improper water heater operation.

 

 

 

 

Step 7.

Install the flue restrictor, P/N

 

239-47191-00,firmly on the flue. It may

 

be necessary to lightly tap down the flue

 

restrictor. Be sure to tap it evenly and

 

straight down. Wire brush the top of the

 

water heater if rust or corrosion exists.

 

 

Warning:

Do NOT remove Torx head screws from

 

 

universal blower.

 

 

 

 

Step 8.

Instructions to remove power cord from

 

new universal blower:

 

a.) Unscrew the (3) Philips head screws

 

on the blower access cover and

 

remove the cover. Keep the cover and

 

screws for future use.

 

Blower access cover

 

(covers access compartment)

 

Power inlet

 

connector

 

b.) Inside the access compartment, follow

 

the black wire from the power cord until

 

you reach the flag terminal attached to

 

the end of the wire. Disconnect black

 

wire from the back of the power inlet

 

connector.

 

Power inlet

 

connector

 

Power cord

Place flue restrictor on flue.

Loosen all (3) screws holding cover on.

Black wire

Remove black wire’s flag terminal

Page 8

Push in both sides of the bushing with pliers to remove.

TTW1 Universal Service

Replacement Blower

MITW -10Series

Cut just below these crimp connectors. Then,

 

remove (1) white and (1) green wire from

Step 8.

bundles. Trace wires back to power cord.

c.) Just below the crimp connector, cut the

 

 

(3) white (neutral) wires. Remove the

 

 

white power cord lead from the bundle.

 

 

Then, strip the ends of the (2)

 

 

remaining white wires and connect

 

 

them using a wire nut, included with

 

 

the kit, P/N 239-47281-00,and tuck the

 

 

wires back into the lower portion of the

 

 

access compartment.

 

Connect (2) white wires

d.) Just below the crimp connector, cut the

 

Power cord

and (2) green wires, each

(3) green (ground) wires. Remove the

 

with their own wire nut.

green power cord lead from the bundle. Then, strip the ends of the (2) remaining green wires and connect them using a wire nut, included with the kit, P/N 239-47281-00,and tuck the wires back into the lower portion of the access compartment.

Warning:

Make sure that each wire nut is securely

 

 

tightened and that all wires are making

 

 

good connection or improper water heater

 

 

operation will occur.

 

 

 

 

 

e.) Remove the power cord from the

 

blower housing and discard.

 

f.) Verify that all electrical connections

 

have been modified, as previously

 

indicated. Also, verify that the

 

pressure switch tubing is connected to

 

the pressure tap on the blower

 

and to the switch itself. Ensure that

 

the tubing is not kinked.

Squeeze bushing to remove power cord from blower.

Page 9

TTW1 Universal Service

Replacement Blower

MITW -10Series

Step 9.

a.) Ensure that the pressure switch, P/N

239-47192-02,is mounted in the vertical position, as shown. This pressure switch comes standard in the blower from the factory. Its vacuum setting should read-0.80"wc.

b.) Place the access compartment cover

 

back on the blower and secure with (3)

 

screws from Step 8a. Start the lower

 

screw first, and when doing so, make

 

sure that the hole in the pressure

 

switch’s bracket matches up to the

 

hole in the blower housing.

 

 

Warning:

Do NOT over tighten (3) screws attaching

 

 

the blower to the water heater.

 

 

 

 

Step 10.

Now that the universal blower is properly

 

modified for a -10series water heater, the

 

blower can be properly positioned and

 

secured on top of the water heater. To

 

place the blower on the water heater, feed

 

the blower from around the backside of

 

the water connections. Secure the

 

universal blower using (3) screws, P/N

 

239-44113-00,provided with the kit, into

 

the pilot holes created in Step 6. Tighten

 

them using a ¼” nut driver.

Step 11.

Find the correct universal blower wire

 

harness provided with the kit, P/N

 

239-47193-00.Connect the wire harness

 

to the receptacle in the jacket head and

 

into the receptacles in the blower housing.

 

Plug both the blower

 

cord sets into the blower

 

receptacles.

Verify electrical

Mount in vertical

position using

and tubing

bracket.

connections.

 

Secure (3) cover screws.

Secure (3) blower screws.

Insert other end of wire harness into receptacle on jacket head.

Page 10