Installation Guide
Page 21 
Continued Removing Room Heater From ZC Cabinet 
6.  Facing the unit from the front, lift the room heater up and pull out by the front corners of the room 
heater top. You must lift the room heater up high enough for the bottom to clear the brackets (front 
stove stops) on the bottom front of the ZC Cabinet. NOTE: If you need more clearance to lift the 
room heater inside the ZC cabinet at this point you may need to adjust the Flue Connector up more.  
BRACKETS 
(FRONT STOVE 
STOPS) 
REAR STOVE 
STOPS 
OUTSIDE AIR 
ROD 
STOVE 
SUPPORT 
RUNNERS 
ELECTRICAL BOX 
 AND 
 RECEPTACLE 
OUTSIDE 
AIR INLET 
FIGURE 17 MODEL 51ZC CABINET CUTOUT 
NOTE: Before pulling the room heater out of the ZC cabinet you may need to place a drop cloth 
where the heater is to be placed to protect your floor covering. 
 REINSTALLING THE MODEL 51, T-51, 74, T-74, 21 ROOM 
HEATER IN THE MODEL 51ZC CABINET 
1.  First lift the back of the room heater up and over the front stove stop brackets. The back of the 
heater should rest on the support runners, keep the heater angled with the front lifted up and slide the 
heater back into the ZC cabinet. 
2.  Slide the heater back until it stops at the back stove stops. 
3.  Next reattach the front stove stop brackets to the heater using the two (2) 3/8" head screws. 
NOTE: The front stove stop brackets may have become bent while sliding the heater in and out of 
the ZC cabinet, if so bend the brackets back in place and reattach as instructed. 
4.  Now you must reconnect the Flue Connector to the Model 51, T-51, 74, T-74, 21 room heater. Run 
the bottom nuts down almost to the end of the threaded rod. Align the Flue Connector with the room 
heater and place it into the Flue collar. At this point you must run the top nuts down until they are 
tight and the Flue connector is secure into the Flue Collar, then run the bottom nuts back up until 
they are tight. 










