Instruction manual

HATS01 HATS02 HATS03 HATS04 HATS05 HATS06 HATS07 HATS08 HATS09

GUI(S,V)070 X X

GUI(S,V)090 X X

GUI(S,V)115 X X

GUI(S,V)140 X X

GCIS070 X X

GCIS090 X X

Low Pressure Switch "WC -0.37 -0.37 -0.37 -0.32 -0.27 -0.32 -0.32 -0.27 -0.23

High Pressure Switch "WC -0.66 -0.6 -0.55 -0.55 -0.46 -0.55 -0.46 -0.46 -0.37

Natural Gas Orifices (DMS) #44 #44 #44 #44 #44 #45 #45 #45 #45

GUIS, GUIV, GCIS High Altitude Charts

For 3,001 feet to 7,000 feet For 7,001 to 8,500 feet

Table 3

2. Replace natural gas orifices (Figure 3 & 4) with the

correct orifice kit depending on propane or natural gas

usage and the altitude at the installation site. Refer to

Tables 3, 4, and 5 for the appropriate kit required.

Orifices

Figure 3

Replacing Gas Orifices

Figure 4

Orifices

4. Reconnect the hose and wires. Reconnect wiring ac-

cording to the wiring diagram located inside the blower

compartment access panel.

5. Proceed with orifice installation.

III. Orifice Installation

CAUTION

To avoid the risk of fire, property damage,

or personal injury, shut off gas supply first,

then disconnect the electrical supply before

proceeding with conversion.

1. Remove the gas manifold by removing the burner box

front cover (not required on all models), cutting the wire

ties, disconnecting the gas valve low voltage wires, and

removing the four manifold mounting screws (see

Figure 2).

Burner Box

Front Cover

Manifold

Figure 2

Gas Manifold Removal