Payne PH1S Manual page 23

G. Electrical Requirements:
1. Factory supplied and installed transformer shall pro-
vide 24 v control voltage.
2. All power and control circuit wiring shall comply with
local and national codes.
H. Special Features:
1. Motormaster III Head Pressure Control:
Control shall vary the fan motor speed in response to
the saturated condensing temperature of the unit. The
control shall be capable of maintaining a condensing
temperature of 100 F
ture at −20 F.
GUIDE SPECIFICATIONS — PH1S090 OUTDOOR UNIT (cont)
10 F with outdoor tempera-
2. Outdoor Thermostat:
Adjustable control shall activate electric heaters
in stages to provide supplemental heat. Range:
−30 F to 90 F.
3. 24-V Thermostat and Subbase:
Thermostat/subbase shall provide control of space
temperature by allowing selection of heating or
cooling, and continuous or automatic fan operation.
4. Coil Guard:
Grille shall protect condenser coil from damage by
large objects or vandalism.
5. Hail Guard:
Guard shall protect unit against damage from damage
by hail or flying debris.
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