Newmac WFA-85, Installation And Operating Manual

-3-

Comb. Control

Limit

Red

Fan

For connection with the blue wire 

from the electric section, when 

installed with the Newmac Electri 

section. Models E10 to E25

Black wire for connection with 

black wire from 120V service or 

red wire from electric section

White wire for connection with 

white wire from 120V service or 

white wire from electric section

Black

Black

Fan

Motor

Draft Fan

Black

White

White

120

24

Transformer

Terminal Block

Factory Wired 120 V

Field Wired 24 V

Thermostat

White

Yellow

Yellow

Yellow

Relay

120v Supply

Green

Green

Blue

Black

W

hit

e

Black

FURNACE WIRING

(When equipped with R8222A relay or equivalent)

NOTE: For constant fan operation , push the MANUAL-AUTO switch to MAN POSITION (If Equipped).

1. 

Install brick and baffles in firebox. After the brick is in position, place 2” to 3” of sand in bottom of firebox. (Use 

pit sand only.) Install draft fan & thermostat according to wiring diagram.

2. 

Do not use a manual flue damper with this furnace.

3.  Caution: If this furnace is used as a replacement for an existing furnace observe the following:

a. 

Make sure there is a minimum of 6” clearance above the warm air plenum as far as 6 feet out from the 

furnace. Beyond 6 feet there must be a minimum of 1/2” clearance.

b. 

Metal return air ducts must be used. (No combustible materials in return air ducts.)

c. 

Use flue pipe as per B365 Clause 5.

This furnace must be connected to a chimney approved for wood burning appliances, ie. CSA-B366.1-11

(Canada) and UL 391 (US), or a masonry chimney conforming to the requirements of provincial regulations or, 

in the absence of such regulations, to the requirements of the National Building Code of Canada. Minimum flue 

size is 7” round or 7” square (inside dimension). It is the responsibility of the installer to ensure there is sufficient draft 

in all cases. Draft should be between -0.03 and -0.05 in. W.C. No other appliance should be connected to this 

chimney flue, unless the installation conforms to clause 5 of B365.

The installation must conform with the regulations of the local authorities having jurisdiction with the applicable